Filtering device for gathering and transportation in oil field

Abstract

The filtering device comprises a filtering pipe, the filtering pipe is provided with a feeding port and a discharging port, the feeding port is provided with a filtering net, the inner side of the filtering net is provided with a scraping mechanism, and the outer side of the filtering net is provided with a separating mechanism; a separation channel of the separation mechanism coincides with a scraping plate of the scraping mechanism, and the separation mechanism and the scraping mechanism are driven by a driving mechanism to achieve synchronous rotation. The bottom of the separating mechanism is rotationally connected with the fixing frame, the fixing frame is fixedly connected with the inner wall of the filter pipe, and a flow dividing pipe is arranged at the joint of the fixing frame and the separating mechanism and penetrates out of the filter pipe. The separating mechanism and the scraping mechanism can scrape substances adhered to the inner side and the outer side of the filter screen, the substances are drained into the flow dividing pipe, and viscous liquid is specially conveyed and treated and is prevented from being accumulated in a crude oil pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of crude oil transportation, in particular to a filtering device for oil field gathering and transportation. Background Art

[0002] Usually, untreated petroleum is called crude oil, which is a dark brown viscous oily liquid. It is a mixture of various liquid hydrocarbons such as alkanes, cycloalkanes, aromatic hydrocarbons and olefins. The extracted crude oil needs to be transported through pumps and pipelines. When crude oil is transported through pipelines, if it is transported directly, due to its oily impurities, some sediments will be deposited inside the pipelines and pumps, resulting in increased pipeline oil pressure and pipeline blockage. It is necessary to filter the viscous crude oil and impurities. For this purpose, a filtering device for oil field gathering and transportation is proposed.

[0003] Announcement No.: CN220899730U discloses a petroleum impurity filtering device, in which the rotation of the worm drives the rotation of the worm gear, and the rotation of the worm gear drives the rotation of the rotating shaft at the top of the support frame. The rotation of the rotating shaft drives the cleaning brush to rotate and clean the impurities attached to the surface of the filter screen to prevent clogging caused by the impurities attached to the surface of the filter screen.

[0004] Announcement No.: CN219186009U, discloses an oil pipe short section with a filtering function, wherein a filter screen is clamped on one side of the inner wall of the oil pipe, and a mounting bar is clamped on the other side of the inner wall of the oil pipe. A rotating shaft is rotatably connected between the filter screen and the mounting bar, and a scraper is fixed on one end of the rotating shaft through the filter screen.

[0005] Publication No. CN209188292U discloses a crude oil filter. By rotating a steering gear disposed within a housing, a first channel within the steering gear can be switched to communicate with a first through hole, a second through hole, or with a third through hole, a fourth through hole, thereby enabling the crude oil filter of the present invention to switch between different configuration states and to switch between different filter screens.

[0006] When the above-mentioned prior art is faced with sticky crude oil, viscous crude oil will appear on both the inner and outer walls of the filter screen. However, the above-mentioned prior art cannot automatically clean the inner and outer walls of the filter screen at the same time.

[0007] In short, the technical solutions of the above-disclosed technologies, the technical problems to be solved and the beneficial effects produced are all different from those of the present utility model. Regarding the more technical features, technical problems to be solved and the beneficial effects of the present utility model, the above-disclosed technical documents do not provide any technical inspiration. Utility Model Content

[0008] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a filtering device for oil field gathering and transportation, which can automatically clean the viscous crude oil on the inner and outer walls of the filter screen at the same time.

[0009] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0010] A filtering device for oilfield gathering and transportation, comprising a filter tube, the filter tube being provided with an inlet and an outlet, the inlet being provided with a filter screen, a scraping mechanism being provided on the inner side of the filter screen and a separating mechanism being provided on the outer side; the separation channel of the separating mechanism coincides with the scraper of the scraping mechanism, and the separating mechanism and the scraping mechanism are driven by a driving mechanism to achieve synchronous rotation; the bottom of the separating mechanism is rotatably connected to a fixing frame, the fixing frame is fixedly connected to the inner wall of the filter tube, a diverter pipe is provided at the connection between the fixing frame and the separating mechanism, and the diverter pipe passes through the filter tube.

[0011] Furthermore, the feed port is provided with a sleeve frame, a truncated cone-shaped filter screen is installed on the sleeve frame, the filter screen is inserted into the interior of the filter tube, and a buffer is provided at the end of the interior of the filter screen;

[0012] Specifically, a connecting seat is fixedly connected to the bottom of the buffer member, and the connecting seat is rotatably connected to the separation mechanism. The driving mechanism includes a first motor, and the first motor is arranged in the connecting seat to drive the separation mechanism to rotate.

[0013] Furthermore, the separation mechanism includes at least two rotating rods, and a first positioning ring and a connecting piece fixedly connected to both ends of the rotating rods;

[0014] Specifically, the first positioning ring is rotatably engaged with the bottom of the sleeve frame;

[0015] Specifically, the center of the connecting piece is through-hole, the rotating rod is attached to the outer surface of the filter screen, the rotating rod is provided with a separation channel, and the separation channel extends all the way to the inner wall of the connecting piece, and the separation channel on the rotating rod portion attached to the outer side of the filter screen is in an open state;

[0016] Specifically, a second planetary gear is provided on the inner wall of the connecting member, a gear groove is provided at the bottom of the connecting seat, the gear groove corresponds to the second planetary gear, and a first gear is provided on the output shaft of the first motor. The first gear is located in the gear groove and is meshed with the second planetary gear.

[0017] Furthermore, the scraping mechanism includes at least two scrapers, and a driving ring and a second positioning ring fixed to both ends of the scrapers, and the number of the scrapers is the same as that of the rotating rods and they correspond one to one;

[0018] Specifically, the second positioning ring is rotatably engaged with the buffer member;

[0019] Specifically, the drive ring is provided with a protruding first planetary gear, the outer wall of the filter tube is provided with a limit baffle, the limit baffle is in contact with the bottom surface of the sleeve outside the filter tube, the top surface of the sleeve is provided with a circular groove in the projection area of ​​the limit baffle, the first planetary gear is placed in the circular groove, the bottom surface of the circular groove is provided with an opening communicating with the outside, and the limit baffle is provided with a notch corresponding to the opening;

[0020] Specifically, the driving mechanism further includes a second motor, which is arranged outside the filter tube. The output shaft of the second motor is provided with a second gear, and the second gear is meshed and connected with the first planetary gear through a notch and an opening.

[0021] Furthermore, the front end of the connecting seat is fixedly connected to the bottom of the buffer member via an axial plug-in buckle;

[0022] Specifically, the end of the shunt pipe passing through the fixing frame is provided with a docking joint, the bottom of the connecting piece is provided with a convex card, and the docking joint is inserted into the convex card;

[0023] Specifically, a first rotation engaging groove is provided on the inner wall of the connecting member, and a first rotation engaging block is provided on the bottom of the connecting seat, and the first rotation engaging groove is rotationally engaged with the first rotation engaging block.

[0024] Furthermore, a magnet is fixedly provided at the end of the rotating rod, and the magnet is concave-convex. The rotating rod is fixed on the first positioning ring by adsorption of the magnet.

[0025] Furthermore, the sidewall of the open portion of the separation channel is divided into a high sidewall and a low sidewall, and the high sidewall is in contact with the outer side of the filter screen;

[0026] Specifically, the scraper and the corresponding area of ​​the lower side wall are provided with an oblique conical surface.

[0027] Furthermore, the buffer is provided with a second engaging groove at the connection with the filter screen, and a second engaging block is provided at the bottom of the second positioning ring, and the second engaging groove is rotatably engaged with the second engaging block.

[0028] Furthermore, a protective plate is provided on the top surface of the sleeve frame.

[0029] Furthermore, the discharge port is connected to a discharge pipe.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] In the utility model, when external crude oil enters the filter tube and passes through the filter screen, the viscous oily liquid adheres to the surface of the filter screen and is adsorbed on the inside and outside of the filter screen. At this time, the separation mechanism and scraping mechanism on the device can scrape the materials adhered to the inside and outside of the filter screen and drain them into the diversion pipe, so that the viscous liquid is specially transported and treated to avoid accumulation in the crude oil pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural diagram of a filtering device for oil field gathering and transportation according to the utility model;

[0033] Figure 2 This is a cross-sectional view of the internal structure of a filter device for oil field gathering and transportation according to the utility model;

[0034] Figure 3 This is a schematic structural diagram of the filter tube in the utility model;

[0035] Figure 4 It is a structural diagram of the separation mechanism and the scraping mechanism in the utility model;

[0036] Figure 5 This is a schematic diagram of the filter installation structure of the utility model;

[0037] Figure 6 It is a schematic diagram of the connection structure of the connecting seat in the utility model.

[0038] In the figure: 1. filter tube; 2. sleeve; 3. filter screen; 4. diverter pipe; 5. separation mechanism; 6. scraping mechanism; 7. buffer member; 8. connecting seat; 9. notch; 10. docking joint; 11a. first positioning ring; 11b. second positioning ring; 12. drive ring; 13. scraper; 14. rotating tube; 15. connecting channel; 16. second planetary gear; 17. connecting member; 18. opening; 19. gear groove. DETAILED DESCRIPTION

[0039] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0040] Example 1:

[0041] See also Figures 1 to 6 The utility model provides a filtering device for oilfield gathering and transportation, comprising a filter tube 1, wherein the filter tube 1 is provided with an inlet and an outlet, and the inlet is provided with a filter screen 3, a scraping mechanism 6 is provided on the inner side of the filter screen 3, and a separating mechanism 5 is provided on the outer side. The separation channel 15 of the separating mechanism 5 coincides with the scraper of the scraping mechanism 6, and the separating mechanism 5 and the scraping mechanism 6 are driven by a driving mechanism to achieve synchronous rotation, the bottom of the separating mechanism 5 is rotatably connected to the fixing frame, and the fixing frame is fixedly connected to the inner wall of the filter tube 1, and a diverter pipe 4 is provided at the connection between the fixing frame and the separating mechanism 5, and the diverter pipe 4 passes through the filter tube 1.

[0042] Wherein, the discharge port is connected with the discharge pipe.

[0043] The filter screen 3 is a woven screen or a porous screen, and is made of a hard material.

[0044] The feed port is provided with a sleeve frame 2, a truncated cone-shaped filter screen 3 is installed on the sleeve frame 2 and inserted into the interior of the filter tube 1, a buffer member 7 is provided at the end of the interior of the filter screen 3, a connecting seat 8 is fixedly connected to the bottom of the buffer member 7, the connecting seat 8 is rotatably connected to the separation mechanism 5, and the driving mechanism includes a first motor, which is arranged in the connecting seat 8 to drive the separation mechanism 5 to rotate.

[0045] The separation mechanism 5 includes at least two rotating rods 14, and a first positioning ring 11a and a connecting piece 17 fixedly connected to the two ends of the rotating rod 14. The first positioning ring 11a is rotatably engaged with the bottom of the sleeve 2, and the center of the connecting piece 17 is through-through. The rotating rod 14 is attached to the outer surface of the filter 3. The rotating rod 14 is provided with a separation channel 15, which extends all the way to the inner wall of the connecting piece 17. The separation channel 15 attached to the part of the rotating rod 14 on the outer side of the filter 3 is in an open state. The inner wall of the connecting piece 17 is provided with a first rotating engaging groove and a second planetary gear 16. The connecting seat 8 is provided with a first rotating engaging block and a gear groove 19. The first rotating engaging groove is rotatably engaged with the first rotating engaging block. The gear groove 19 corresponds to the second planetary gear 16. The first motor output shaft is provided with a first gear, which is located in the gear groove 19 and is meshed with the second planetary gear 16.

[0046] The sidewalls of the open portion of the separation channel 15 are divided into high sidewalls and low sidewalls. The high sidewalls are in contact with the outside of the filter screen 3 so that the high sidewalls can scrape the viscous crude oil outside the filter screen 3 into the separation channel 15 .

[0047] The rotating pipe 14 is divided into a straight pipe section and an inclined pipe section. The inclined pipe section is in contact with the filter screen 3, and the separation channel 15 is in an open state in the inclined pipe section.

[0048] The end of the shunt pipe 4 passing through the fixing frame is provided with a docking joint 10, and the bottom of the connecting piece 17 is provided with a convex card, and the docking joint 10 is inserted into the convex card.

[0049] Among them, the front end of the connecting seat 8 is fixedly connected to the bottom of the buffer member 7 through an axial plug-in buckle, so that the connecting seat 8 remains stable, making it convenient for the first motor to drive the separation mechanism 5 to rotate.

[0050] The scraping mechanism 6 includes at least two scrapers 13, and a driving ring 12 and a second positioning ring 11b fixed at both ends of the scraper 13. The scrapers 13 are the same in number and correspond one to one to the rotating rod 14. The second positioning ring 11b is rotatably engaged with the buffer member 7. The driving ring 12 is provided with a protruding first planetary gear. The outer wall of the filter tube 1 is provided with a limit baffle. The limit baffle contacts the bottom surface of the sleeve 2 outside the filter tube 1. The top surface of the sleeve 2 is provided with a circular groove in the projection area of ​​the limit baffle. The first planetary gear is placed in the circular groove. The bottom surface of the circular groove is provided with an opening 18 communicating with the outside. The limit baffle is provided with a notch 9 corresponding to the opening 18. The driving mechanism also includes a second motor. The second motor is provided on the outside of the filter tube 1. The output shaft of the second motor is provided with a second gear. The second gear is meshed with the first planetary gear 12 through the notch 9 and the opening 18.

[0051] The scraper 13 and the corresponding area of ​​the lower side wall are provided with an oblique conical surface, so that the scraper 13 can push the viscous crude oil on the inner surface of the filter screen 3 to the separation channel 15 of the rotating rod 14.

[0052] The buffer member 7 is provided with a second engaging groove at the connection with the filter screen 3 , and a second engaging block is provided at the bottom of the second positioning ring 11 b , and the second engaging groove is rotatably engaged with the second engaging block.

[0053] Among them, a magnet is fixedly provided at the end of the rotating rod 14, and the magnet is concave and convex. The rotating rod 14 is fixed on the first positioning ring 11a by magnet adsorption. The concave and convex magnet can transmit torque and complete the positioning after the sleeve is fixed and will not come off. The provision of the magnet allows the rotating rod 14 to be quickly removed during maintenance, saving maintenance time.

[0054] Among them, the bottom surface of the sleeve 2 is provided with a first positioning ring engaging groove, a filter tube wall engaging groove, and an opening 18 in sequence from the inside to the outside, and a circular groove is provided on the top surface of the sleeve 2. A protective plate is provided on the top surface of the sleeve 2, and the protective plate blocks the drive ring 12 to reduce the corrosion of the environment on the first planetary gear on the drive ring 12.

[0055] The connecting member 17 and the connecting seat 8 are both spliced ​​parts. The connecting member 17 and the connecting seat 8 are decomposed into multiple units, and the connecting member 17 and the connecting seat 8 are spliced ​​together with the first motor to form a unit.

[0056] Example 2:

[0057] Based on Example 1, this embodiment provides a method for using a filtering device for oil field gathering and transportation, which specifically includes the following steps:

[0058] S1. After crude oil is extracted, it is poured into the device from the feed port through a pipeline. The poured crude oil is filtered by the filter 3. The relatively clean part of the crude oil directly passes through the filter 3 and flows out from the end of the filter tube 1. The relatively viscous impurities retained by the filter 3 remain in the filter 3, and some of them adhere to the inner and outer walls of the filter 3.

[0059] S2. After a certain period of use, the viscous crude oil on the filter screen 3 will stick to the filter screen, causing the subsequent crude oil to pass slowly or even fail to pass through. In this case, the sticky crude oil can be processed;

[0060] The first motor and the second motor inside the connecting seat 8 and outside the filter tube 1 work, respectively rotating the second planetary gear 16 and the first planetary gear to drive the separation mechanism 5 and the scraping mechanism 6 to work synchronously. When working, the separation mechanism 5 and the scraping mechanism 6 rotate synchronously.

[0061] The scraper 13 and the rotating rod 14 rotate around the inner and outer walls of the filter screen 3, respectively. The scraper 13 on the inner side pushes the crude oil adhering to the inner surface of the scraper 13 outward, while the rotating rod 14 on the outer side directly scrapes the crude oil adhering to the outer surface of the filter screen 3 into the separation channel 15. At the same time, the rotation speed of the rotating rod 14 is adapted to that of the scraper 13. The separation channel 15 on the rotating rod 14 can synchronously receive the inner crude oil pushed out by the scraper 13. The adhering crude oil is guided by the separation channel 15 through the connector 17 and enters the diversion pipe 4, completing the treatment of the adhering crude oil.

[0062] The bonding crude oil is separated from the ordinary crude oil to facilitate subsequent processing of each, thereby avoiding the accumulation and sedimentation of the bonding crude oil in the oil pipeline, which may lead to blockage of the oil pipeline. At the same time, the filter screen 3 processed by the separation mechanism 5 and the scraping mechanism 6 can be reused for filtering.

[0063] All components not discussed in detail in this application and the connection methods of the components in this application are well-known technologies in the technical field and can be directly applied without further explanation.

[0064] In this utility model, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0065] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0066] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A filtering device for oilfield gathering and transportation, comprising a filter tube, wherein the filter tube is provided with an inlet and an outlet, and the inlet is provided with a filter screen, characterized in that: The filter screen is provided with a scraping mechanism on the inner side and a separating mechanism on the outer side; The separation channel of the separation mechanism coincides with the scraper of the scraping mechanism, and the separation mechanism and the scraping mechanism are driven by the driving mechanism to realize synchronous rotation; The bottom of the separation mechanism is rotatably connected to the fixing frame, the fixing frame is fixedly connected to the inner wall of the filter tube, and a diversion pipe is provided at the connection between the fixing frame and the separation mechanism, and the diversion pipe passes through the filter tube.

2. The filtering device for oil field gathering and transportation according to claim 1, characterized in that: The feed port is provided with a sleeve frame, a truncated cone-shaped filter screen is installed on the sleeve frame, the filter screen is inserted into the interior of the filter tube, and a buffer is provided at the end of the interior of the filter screen; The bottom of the buffer is fixedly connected to a connecting seat, and the connecting seat is rotatably connected to the separation mechanism. The driving mechanism includes a first motor, and the first motor is arranged in the connecting seat to drive the separation mechanism to rotate.

3. The oilfield gathering and transportation filtering device according to claim 2, characterized in that: The separation mechanism includes at least two rotating rods, and a first positioning ring and a connecting piece fixedly connected to both ends of the rotating rods; The first positioning ring is rotatably engaged with the bottom of the sleeve frame; The center of the connecting piece is through-hole, the rotating rod is attached to the outer surface of the filter screen, and the rotating rod is provided with a separation channel, which extends to the inner wall of the connecting piece, and the separation channel on the rotating rod portion attached to the outer side of the filter screen is in an open state; A second planetary gear is provided on the inner wall of the connecting member, a gear groove is provided on the bottom of the connecting seat, the gear groove corresponds to the second planetary gear, and a first gear is provided on the output shaft of the first motor. The first gear is located in the gear groove and is meshed with the second planetary gear.

4. The filtering device for oil field gathering and transportation according to claim 3, characterized in that: The scraping mechanism includes at least two scrapers, and a driving ring and a second positioning ring fixed to both ends of the scrapers. The number of the scrapers is the same as that of the rotating rods and they correspond one to one. The second positioning ring is rotatably engaged with the buffer member; The driving ring is provided with a protruding first planetary gear, and the outer wall of the filter tube is provided with a limit baffle, which contacts the bottom surface of the sleeve outside the filter tube. The top surface of the sleeve is provided with a circular groove in the projection area of ​​the limit baffle, and the first planetary gear is placed in the circular groove. The bottom surface of the circular groove is provided with an opening communicating with the outside, and the limit baffle is provided with a notch corresponding to the opening. The driving mechanism further includes a second motor, which is arranged outside the filter tube. The output shaft of the second motor is provided with a second gear, and the second gear is meshed and connected with the first planetary gear through a notch and an opening.

5. The filtering device for oil field gathering and transportation according to claim 3, characterized in that: The front end of the connecting seat is fixedly connected to the bottom of the buffer member via an axial plug-in buckle; The end of the shunt pipe passing through the fixing frame is provided with a butt joint, and the bottom of the connecting piece is provided with a convex card, and the butt joint is inserted into the convex card; A first rotating engaging groove is provided on the inner wall of the connecting member, and a first rotating engaging block is provided on the bottom of the connecting seat. The first rotating engaging groove is rotatably engaged with the first rotating engaging block.

6. The filtering device for oil field gathering and transportation according to claim 3, characterized in that: A magnet is fixedly provided at the end of the rotating rod, and the magnet is concave-convex. The rotating rod is fixed on the first positioning ring by adsorption of the magnet.

7. The filtering device for oil field gathering and transportation according to claim 4, characterized in that: The sidewall of the open portion of the separation channel is divided into a high sidewall and a low sidewall, and the high sidewall is in contact with the outer side of the filter screen; The scraper and the corresponding area of ​​the low side wall are provided with an oblique cone surface.

8. The filtering device for oil field gathering and transportation according to claim 4, characterized in that: The buffer member is provided with a second engaging groove at the connection position with the filter screen, and a second engaging block is provided at the bottom of the second positioning ring. The second engaging groove is rotatably engaged with the second engaging block.

9. The filtering device for oil field gathering and transportation according to claim 4, characterized in that: A protection plate is provided on the top surface of the sleeve frame.

10. The filtering device for oil field gathering and transportation according to any one of claims 1 to 9, characterized in that: The discharge port is connected to the discharge pipe.

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