Oil field pulping hydraulic station

Abstract

The invention discloses an oil field pulping hydraulic station and belongs to the technical field of hydraulic stations, the oil field pulping hydraulic station comprises an oil tank, a hydraulic pump, a hydraulic auxiliary mechanism, a power source and an executing mechanism, the oil tank comprises a tank body, an oil suction pipe and an oil return pipe, and the oil suction pipe and the oil return pipe are installed on the tank body; a cleaning opening is formed in one side of the box body, a cleaning assembly is arranged in the box body, and the cleaning assembly is driven to push sediments on the bottom wall of the box body to the side where the cleaning opening is located after the blocking piece is driven to deform so that the lower portions of the oil absorption area and the oil return area can communicate; according to the oil field pulping hydraulic station, the blocking piece is designed to be of a deformable structure, the cleaning assembly is arranged in the box body, and when sediment on the bottom wall of the box body needs to be cleaned, the blocking piece is driven to deform, so that the lower portion of an oil absorption area and the lower portion of an oil return area in the box body are communicated; the cleaning assembly can enter the oil return area from the oil absorption area from the lower portion of the blocking piece, and sediment on the bottom wall of the box body is comprehensively scraped away.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic stations, and in particular discloses an oilfield beating hydraulic station. Background Art

[0002] Oil-based mud is often needed in the process of oil field exploitation. It has super strong inhibition, high membrane efficiency and rock pore barrier pressure, which can ensure better well wall stability, and good rheological properties and sand carrying efficiency can make the wellbore cleaner and smoother, good lubricity and anti-mud packing ability of drilling tools can effectively reduce downhole obstruction, and is more conducive to protecting oil and gas layers; however, after use, oil-based mud will produce a large amount of oil-containing solid waste, mainly including oil-containing drill cuttings, cementing slurry, plugging and return slurry, completion and cleaning tank bottom oil mud, etc. If the leachate of waste oil-based mud enters the soil, it will cause soil compaction, destroy the soil ecological chain, make it difficult for ground plants to grow, and make it difficult for microorganisms in the soil to survive. Therefore, it is necessary to treat the waste oil-based mud to reduce or avoid the impact on the environment; the existing treatment methods include solidification, reinjection, incineration and Stripping method and other treatment methods, among which, the reinjection method can be used to "drive (inject)" the waste oil-based mud into the non-permeable formation or the annular space of the wellbore to treat the waste oil-based mud that is highly toxic and difficult to dispose of. When injected into the non-permeable formation, it is necessary to apply a sufficiently large pressure to the mud through the fracturing fluid to create cracks in the non-permeable formation, thereby injecting the waste oil-based mud into the cracks. After the external force is removed, the formation cracks are closed to ensure that the waste oil-based mud will not migrate and leak out; when the reinjection method is used to inject the waste oil-based mud into the non-permeable layer, since the hydraulic station has a large output force and is suitable for high-load capacity scenarios, the hydraulic station is often used as a power source to create cracks in the non-permeable formation that are large enough to place the waste oil-based mud. The hydraulic oil tank is the main component of the hydraulic station. It is mainly used in the hydraulic system for oil storage, heat dissipation, separation of bubbles in the oil, and precipitation of impurities.

[0003] For example, the patent with announcement number CN110821903B, with announcement date of 2021-07-20, discloses a self-heating safety oil tank for a hydraulic pump station. The hydraulic pump station includes an oil tank body, an oil tank cover is arranged on the outside of the oil tank body, a plurality of movable graded heat dissipation cavities are arranged on the oil tank body, a plurality of evenly distributed fins are arranged on the outside of the movable graded heat dissipation cavity, and a pair of partitions are arranged in the movable graded heat dissipation cavity; the self-heating safety oil tank can easily dissipate heat outward by the oil tank by itself through a variety of different ways. One is to convert heat into kinetic energy of the heated movement of the first heat dissipation ball, the second heat dissipation ball and the third heat dissipation ball; the second is that the heat partially evaporates the liquid contained in cavity one, cavity two and cavity three to dissipate heat; the third is to transfer heat to the fins and then transfer heat to the air over a large area by the fins. The oil tank is easy to perform high-efficiency self-heating, so that it is not easy to cause unnecessary damage due to excessive temperature, which helps to improve work efficiency.

[0004] When designing an existing hydraulic oil tank, a partition is usually used in the internal space of the hydraulic oil tank. The partition divides the inner cavity of the tank into an oil suction area and an oil return area to increase the path length of the oil flowing from the oil return area to the oil suction area, so as to ensure that impurities in the returned oil are smoothly precipitated, that bubbles have sufficient time to separate from the hydraulic oil during the return oil, and that the return oil has sufficient time to dissipate heat. However, the setting of the partition will increase the blind spots for cleaning, making it inconvenient to fully clean the sediment on the bottom wall of the tank. Summary of the invention

[0005] The purpose of the invention is to provide an oil field pulping hydraulic station which is convenient for comprehensively cleaning sediments in an oil tank.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] The oilfield beating hydraulic station includes an oil tank, a hydraulic pump, a power source and an actuator. The power source drives the hydraulic pump to pump the hydraulic oil in the oil tank to the actuator and drives the actuator to move to achieve the driving purpose. The oil tank includes a box body, an oil suction pipe and an oil return pipe installed on the box body. A barrier is arranged in the box body, and the barrier separates the inner cavity of the box body into an oil suction area and an oil return area. A cleaning port is arranged on one side of the box body, and a cleaning assembly is arranged in the box body. After the barrier is driven to deform so that the lower parts of the oil suction area and the oil return area are connected, the cleaning assembly is driven to push the sediment on the bottom wall of the box body to the side where the cleaning port is located.

[0008] In the above-mentioned hydraulic station, the barrier includes a first plate and a second plate mounted on the outside of the first plate, the lower part of the first plate contacts the bottom wall of the box body, the second plate is fixedly connected to the inner wall of the box body, and the first plate is driven to shrink to the inside of the second plate so that the lower parts of the oil suction area and the oil return area are connected.

[0009] In the hydraulic station, the surface of the first plate in contact with the inner wall of the box body is provided with rubber strips.

[0010] In the hydraulic station, the bottom wall of the box is inclined from the oil suction area to the oil return area, and the cleaning port is arranged at the lowest side of the bottom wall of the box.

[0011] In the hydraulic station, a pull rod is fixedly connected to one side of the first plate away from the bottom wall of the box body, and the upper end of the pull rod passes through the second plate and the top wall of the box body in sequence and extends to the outside.

[0012] The cleaning assembly of the hydraulic station includes a scraper and a driving member. The lower part of the scraper is inclined and closely attached to the bottom wall of the box. The driving member drives the scraper to slide downward along the bottom wall of the box.

[0013] In the hydraulic station, a convex block is arranged on the side wall of the box body away from the position where the cleaning port is opened, and the convex block is matched with the scraper.

[0014] The above-mentioned hydraulic station, the driving part includes a first threaded rod and a second threaded rod rotatably installed in the box body, the first threaded rod and the second threaded rod are coaxially arranged and respectively located on both sides of the first plate, the first threaded rod and the second threaded rod are parallel to the bottom wall of the box body, and threaded holes matching the first threaded rod and the second threaded rod are opened on the scraper, and the thickness of the scraper is greater than the distance between the first threaded rod and the second threaded rod.

[0015] In the hydraulic station, a transmission member is arranged on the first threaded rod, and the transmission member is driven to transmission-connect the first threaded rod with the second threaded rod.

[0016] In the above-mentioned hydraulic station, the transmission part includes a transmission block rotatably mounted on the first threaded rod, and the first threaded rod and the second threaded rod are both provided with an open groove for accommodating the transmission block, and the opening of the open groove faces the bottom wall of the box body. A torsion spring is arranged at the hinge position of the transmission block, and the torsion spring maintains the transmission block in the open groove on the first threaded rod.

[0017] In the above technical scheme, the oilfield beating hydraulic station provided by the present invention designs the barrier to be a deformable structure and arranges a cleaning component in the box body. When it is necessary to clean the sediment on the bottom wall of the box body, the barrier is first deformed to connect the lower part of the oil suction area and the oil return area in the box body, so that the cleaning component can enter the oil return area from the oil suction area under the barrier without separating from the bottom wall of the box body, and completely scrape off the sediment on the bottom wall of the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application 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 recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the structure of a box provided by an embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of the box body when the first plate provided in the embodiment of the present invention is in a blocking state;

[0021] Figure 3 A cross-sectional view of a box body when the first plate provided in an embodiment of the present invention is in an open state;

[0022] Figure 4 A cross-sectional view of a box body in a top view provided by an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the state of the transmission block when the first plate provided by the embodiment of the present invention is in the first stroke;

[0024] Figure 6 A schematic diagram of the state of the transmission block when the first plate provided by the embodiment of the present invention is in the second stroke;

[0025] Figure 7 A schematic diagram of the state of the transmission block when the first plate provided by the embodiment of the present invention is in the third stroke;

[0026] Figure 8 A partial bottom view of a first threaded rod and a second threaded rod provided in an embodiment of the present invention;

[0027] Fig. 9 A schematic diagram of the internal structure of a first threaded rod and a second threaded rod provided in an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. Box body; 11. Cleaning port; 12. Oil suction area; 13. Oil return area; 14. Protective sleeve; 15. Bump; 2. Oil suction pipe; 3. Oil return pipe; 4. Barrier; 41. First plate; 411. Pull rod; 412. Groove; 413. Bevel; 42. Second plate; 5. Cleaning assembly; 51. Scraper; 52. First threaded rod; 521. Transmission block; 522. Open groove; 523. Sliding block; 524. Spring; 53. Second threaded rod; 531. Wedge groove. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] In the description of the present invention, unless otherwise specified, "multiple" means two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1-Figure 9As shown, the oilfield pulping hydraulic station provided by the embodiment of the present invention includes an oil tank, a hydraulic pump, a power source and an actuator. The power source drives the hydraulic pump to pump the hydraulic oil in the oil tank to the actuator, and drives the actuator to operate to achieve the driving purpose. The oil tank includes a box body 1, an oil suction pipe 2 and an oil return pipe 3 installed on the box body 1, a barrier 4 is arranged in the box body 1, and the barrier 4 divides the inner cavity of the box body 1 into an oil suction area 12 and an oil return area 13. A cleaning port 11 is arranged on one side of the box body 1, and a cleaning assembly 5 is arranged in the box body 1. After the barrier 4 is driven to deform so that the lower parts of the oil suction area 12 and the oil return area 13 are connected, the cleaning assembly 5 is driven to push the sediment on the bottom wall of the box body 1 to the side where the cleaning port 11 is located.

[0033] Specifically, when the waste oil-based mud is treated by the reinjection method, the fracturing fluid needs to be transported to the non-permeable layer by a high-pressure pump. The hydraulic station is used to drive the high-pressure pump to rotate to provide the high-pressure conditions required for the injection of the fracturing fluid. The hydraulic station includes a fuel tank, a hydraulic pump, a hydraulic auxiliary mechanism, a power source and an actuator, wherein the fuel tank is used to store hydraulic oil, the hydraulic pump can adopt an existing plunger pump, and the hydraulic auxiliary mechanism includes pipelines, valves, filter elements, etc. to ensure that the hydraulic station can operate stably, the power source can adopt a diesel engine, and the actuator adopts a hydraulic motor, which is the existing technology and can be directly applied without further elaboration; when the hydraulic station is running, the diesel engine drives the plunger pump to operate, continuously transports the hydraulic oil from the fuel tank to the hydraulic motor, drives the hydraulic motor to rotate through the hydraulic oil, and drives the high-pressure pump to rotate through the hydraulic motor to input the oil-based mud into the ground, that is, to achieve the driving purpose, which is the existing technology and will not be elaborated.

[0034] In actual design, in order to ensure the smooth precipitation of impurities in the returned oil and the bubbles generated during the oil return to have enough time to separate from the oil, a barrier 4 such as a partition is provided in the middle of the main structure box 1 of the oil tank. The box 1 is preferably a rectangular hollow box 1. The partition is at a certain distance from the top inner wall of the box 1, and the partition is directly in contact with the bottom inner wall and the front and rear inner walls of the box 1. Figure 2 and Figure 3As shown, the partition divides the space in the box body 1 into an oil suction area 12 and an oil return area 13, wherein the oil suction pipe 2 connected to the plunger pump is inserted into the oil suction area 12, and the oil return pipe 3 connected to the hydraulic motor is inserted into the oil return area 13; and a cleaning port 11 is provided on one side of the box body 1 to facilitate the discharge of sediments on the bottom wall of the box body 1 (the bottom wall is also the bottom inner wall of the box body 1), but due to the setting of the partition, the lower part of the box body 1 is divided into two parts, which makes it inconvenient to clean the sediments on the bottom wall of the box body 1; the present invention is different from the prior art in that a cleaning component 5 is provided inside the box body 1, and the cleaning component 5 can adopt the existing The electric scraper 51 reciprocates against the bottom wall of the box body 1 to scrape off the sediment in the box body 1, and in order to enable the electric scraper 51 to comprehensively scrape off the sediment on the bottom wall of the box body 1, the partition is correspondingly arranged to be deformable, such as retractable or hinged, and the partition can be driven by a driving mechanism so that the side of the partition in contact with the bottom wall of the box body 1 is gradually separated from the inner wall of the box body 1 and a certain gap is exposed, thereby allowing the electric scraper 51 to pass through and the electric scraper 51 can still contact with the bottom wall of the box body 1 when passing through, so as to achieve comprehensive and uninterrupted cleaning of the bottom wall of the box body 1.

[0035] The oilfield beating hydraulic station provided by the embodiment of the present invention designs the barrier 4 into a deformable structure and arranges a cleaning component 5 in the box body 1. When it is necessary to clean the sediment on the bottom wall of the box body 1, the barrier 4 is first deformed to connect the lower part of the oil suction area 12 and the oil return area 13 in the box body 1, so that the cleaning component 5 can enter the oil return area 13 from the oil suction area 12 under the barrier 4 without separating from the bottom wall of the box body 1, and completely scrape off the sediment on the bottom wall of the box body 1.

[0036] Furthermore, the barrier 4 includes a first plate 41 and a second plate 42 mounted on the outside of the first plate 41, the lower portion of the first plate 41 contacts the bottom wall of the box body 1, the second plate 42 is fixedly connected to the inner wall of the box body 1, and the first plate 41 is driven to shrink to the inside of the second plate 42 so that the lower portions of the oil suction area 12 and the oil return area 13 are connected.

[0037] Specifically, during the use of the oil tank, since some sediments have great viscosity, the left and right side walls of the barrier 4 will also adhere to the sediments, and the sediments generated during the use of the hydraulic oil have poor fluidity. If the barrier 4 is deformed by rotating, some of the sediments will be scooped up by the barrier 4 and retained on the surface of the barrier 4 that is tilted upward after the rotation. In this embodiment, the barrier 4, that is, the above-mentioned partition, includes a first plate 41 and a second plate 42, such as Figure 2 , Figure 3 and Figure 4As shown, the two end surfaces of the second plate 42 are respectively fixedly connected to the corresponding positions of the inner walls of the two sides of the box body 1, the second plate 42 is a hollow plate body, and the second plate 42 is sleeved on the outside of the first plate 41, and the upper and lower parts of the second plate 42 are spaced from the top inner wall and the bottom wall of the box body 1. The barrier 4 has a blocking state and an open state in the box body 1:

[0038] When in the blocking state, the lower portion of the first plate 41 contacts the bottom wall of the box body 1. Figure 2 In the state shown, at this time, the first plate 41 and the second plate 42 form a whole that basically completely separates the middle and lower parts of the oil suction area 12 and the oil return area 13. Only when the liquid level of the oil return area 13 is higher than the upper part of the second plate 42, the oil in the oil return area 13 can flow to the oil suction area 12;

[0039] When in the open state, the lower portion of the first plate 41 is completely retracted into the interior of the second plate 42, such as Figure 3 In the state shown, at this time, the lower part of the first plate 41 is flush with the lower part of the second plate 42. In this state, the cleaning mechanism can pass under the first plate 41.

[0040] When the sediment at the bottom of the box body 1 needs to be cleaned, the first plate 41 is first moved to Figure 2 Slide upward in the vertical direction in the view to adjust the blocking member 4 from the above-mentioned blocking state to the open state, so that the bottom wall of the box body 1 can be fully cleaned through the cleaning component 5.

[0041] In this embodiment, by slidingly connecting the first plate 41 and the second plate 42, when the blocking member 4 is adjusted from the above-mentioned blocking state to the cleaning state, the second plate 42 can also scrape off the sediment attached to the first plate 41. The scraped sediment falls to the bottom wall of the box body 1 under the action of gravity and is cleaned by the cleaning component 5.

[0042] Preferably, the surfaces of the first plate 41 that are in contact with the inner wall of the box body 1 are all provided with rubber strips, so as to prevent the first plate 41 from causing wear to the inner wall of the box body 1 during the adjustment process between the two states mentioned above.

[0043] Furthermore, the bottom wall of the box body 1 is inclined, and the bottom wall of the box body 1 is inclined from the oil suction area 12 to the oil return area 13 , and the cleaning port 11 is arranged at the lowest side of the bottom wall of the box body 1 .

[0044] Specifically, Figure 2 and Figure 3As shown in the figure, the oil return area 13 is on the left side of the second plate 42, and the oil suction area 12 is on the right side of the second plate 42, the bottom wall of the box body 1 is inclined, and the portion of the bottom wall of the box body 1 corresponding to the oil suction area 12 is higher than the portion of the bottom wall of the box body 1 corresponding to the oil return area 13, and the cleaning port 11 is on the lower side of the bottom wall of the box body 1. With this arrangement, the sediment tends to be closer to the cleaning port 11 during the sedimentation process, and the inclined bottom wall helps to completely discharge the oil, thereby ensuring that the replaced new hydraulic oil is not contaminated by the waste hydraulic oil; when replacing the hydraulic oil, by shrinking the first plate 41 into the second plate 42, the oil suction area 12 can be connected with the lower part of the oil return area 13, thereby facilitating the discharge of all the oil in the oil suction area 12 and the oil return area 13.

[0045] Furthermore, a pull rod 411 is fixedly connected to one side of the first plate 41 away from the bottom wall of the box body 1 , and the upper end of the pull rod 411 sequentially passes through the second plate 42 and the top wall of the box body 1 and extends to the outside.

[0046] Specifically, in order to facilitate the adjustment of the first plate 41 from the above-mentioned blocking state to the open state, a pull rod 411 is fixedly connected to the side of the first plate 41 away from the bottom wall of the box body 1. Figure 2 and Figure 3 As shown in the figure, the pull rod 411 is vertically arranged, and the upper end of the pull rod 411 passes through the upper part of the second plate 42 and then passes out from the top of the box body 1. Preferably, in order to prevent the air, dust, etc. in the external environment from entering the box body 1 through the position where the pull rod 411 passes out of the box body 1 during the use of the pull rod 411, a protective sleeve 14 is provided at the top of the box body 1 corresponding to the position of the pull rod 411, and a cover is threadedly connected to the protective sleeve 14.

[0047] In another embodiment provided by the present invention, the cleaning assembly 5 includes a scraper 51 and a driving member. The lower part of the scraper 51 is inclined and fits against the bottom wall of the box body 1. The driving member drives the scraper 51 to slide downward along the bottom wall of the box body 1.

[0048] Specifically, Figures 2 to 4 As shown, the two ends of the scraper 51 are Figure 4 The upper end and the lower end in the view are in contact with the front and rear inner walls of the box body 1 respectively, and the surface of the scraper 51 in contact with the bottom wall of the box body 1 is inclined and the angle is adapted to the oblique angle of the bottom wall of the box body 1, so that the scraper 51 can push the sediment in the box body 1 to the side where the cleaning port 11 is located, so as to facilitate the centralized cleaning of the sediment from the cleaning port 11; in addition, a driving member is also provided on the box body 1, and optionally, the driving member includes a hydraulic rod (not shown in the figure) arranged parallel to the bottom wall of the box body 1, and the hydraulic rod can be arranged outside the box body 1, and the output end of the hydraulic rod is extended into the interior of the box body 1 to connect with the scraper 51, so as to ensure that the telescopic stroke of the hydraulic rod can drive the scraper 51 to Figures 2 to 4The right inner wall of the box body 1 is moved to a position close to the left inner wall of the box body 1 (a certain gap needs to be left between the scraper 51 and the left inner wall of the box body 1 for cleaning the sediment).

[0049] Furthermore, a convex block 15 is formed on the side wall of the box body 1 away from the opening position of the cleaning port 11, and the convex block 15 is adapted to the scraper 51, such as Figure 2 and Figure 3 As shown, for the convenience of description, the scraper 51 is at its initial position when it is farthest from the cleaning port 11, and is at its terminal position when the scraper 51 is closest to the cleaning port 11. The protrusion 15 set on the inner wall of the box body 1 is in the initial position of the scraper 51. When the scraper 51 is in the initial position, it can completely fit with the protrusion 15 and the inner wall of the box body 1. At this time, the protrusion 15 extends to the top of the scraper 51 to reduce the occurrence of a gap between the scraper 51 and the inner wall of the box body 1, which causes sediment to enter and cannot be cleaned.

[0050] In another embodiment provided by the present invention, the driving member includes a first threaded rod 52 and a second threaded rod 53 rotatably installed in the box body 1, the first threaded rod 52 and the second threaded rod 53 are coaxially arranged and are respectively located on both sides of the first plate 41, the first threaded rod 52 and the second threaded rod 53 are both parallel to the bottom wall of the box body 1, and a threaded hole matching the first threaded rod 52 and the second threaded rod 53 is opened on the scraper 51, and the thickness of the scraper 51 is greater than the distance between the first threaded rod 52 and the second threaded rod 53.

[0051] Specifically, in the above embodiment, a hydraulic rod is used to drive the scraper 51. When ensuring that the scraper 51 can reciprocate between the above initial position and the terminal position, the hydraulic rod needs to be arranged outside the box body 1, which is not convenient for the installation of the oil tank. In this embodiment, the driving member includes a first threaded rod 52 and a second threaded rod 53 arranged coaxially, such as Figures 2 to 4As shown, the ends of the first threaded rod 52 and the second threaded rod 53 that are away from each other are respectively rotatably installed at corresponding positions on the inner wall of the box body 1, and the first threaded rod 52 is arranged on the right side of the first plate 41, and the second threaded rod 53 is arranged on the right side of the first plate 41. The scraper 51 is provided with threaded holes that match the first threaded rod 52 and the second threaded rod 53. When the scraper 51 is in the above-mentioned initial position, the scraper 51 is screwed to the end of the first threaded rod 52 away from the second threaded rod 53. In addition, the thickness of the scraper 51 is greater than the distance between the first threaded rod 52 and the second threaded rod 53. When the first threaded rod 52 and the second threaded rod 53 are driven to rotate synchronously, the scraper 51 is restricted by the inner wall of the box body 1, and moves from the initial position to the bottom of the second plate 42 under the drive of the first threaded rod 52, and when the scraper 51 is in the above-mentioned initial position, the scraper 51 is screwed to the end of the first threaded rod 52 away from the second threaded rod 53. In addition, the thickness of the scraper 51 is greater than the distance between the first threaded rod 52 and the second threaded rod 53. When the first threaded rod 52 and the second threaded rod 53 are driven to rotate synchronously, the scraper 51 is restricted by the inner wall of the box body 1, and moves from the initial position to the bottom of the second plate 42 under the drive of the first threaded rod 52. Before the plate 51 is separated from the first threaded rod 52, the second threaded rod 53 has been matched with the threaded hole on the scraper 51. At this time, the second threaded rod 53 takes over the first threaded rod 52 to drive the scraper 51, so that the scraper 51 can continue to move from directly below the second plate 42 to the end position. With this arrangement, both the first threaded rod 52 and the second threaded rod 53 can be installed inside the box body 1, and the oil tank will not be difficult to install. Obviously, for the drive of the first threaded rod 52 and the second threaded rod 53, motors can be installed at positions corresponding to the first threaded rod 52 and the second threaded rod 53 on the outer wall of the box body 1, so that the first threaded rod 52 and the second threaded rod 53 are respectively connected to the output ends of the corresponding motors, and the first threaded rod 52 and the second threaded rod 53 are driven by the two motors to rotate synchronously to achieve the driving of the scraper 51.

[0052] In another embodiment of the present invention, a transmission member is provided on the first threaded rod 52 , and the transmission member is driven to transmission-connect the first threaded rod 52 and the second threaded rod 53 .

[0053] Furthermore, the transmission member includes a transmission block 521 rotatably mounted on the first threaded rod 52, and an open groove 522 for accommodating the transmission block 521 is provided on the first threaded rod 52 and the second threaded rod 53, and the opening of the open groove 522 faces the bottom wall of the box body 1, and a torsion spring is provided at the hinge position of the transmission block 521, and the torsion spring maintains the transmission block 521 in the open groove 522 on the first threaded rod 52.

[0054] Specifically, in the above embodiment, two groups of motors are used to drive the first threaded rod 52 and the second threaded rod 53 respectively to keep the first threaded rod 52 and the second threaded rod 53 rotating synchronously. This requires that the two groups of motors need to keep rotating synchronously, and a control mechanism needs to be set for precise control. The structure is relatively complex, and as the use time goes by, the rotation speeds of the two motors cannot be synchronized due to problems such as mechanical wear inside the motors. Therefore, it is impossible to ensure that the first threaded rod 52 and the second threaded rod 53 rotate synchronously, and the scraper 51 will get stuck in the process of transferring from the first threaded rod 52 to the second threaded rod 53. In this embodiment, a transmission member is provided on the first threaded rod 52, and the transmission member includes a transmission block 521, such as Figures 5 to 9 As shown, the transmission block 521 is a flat plate, which is hinged to one end of the first threaded rod 52 corresponding to the second threaded rod 53, as shown in FIG. Fig. 9 As shown, a torsion spring is provided at the hinge position of the transmission block 521. In addition, an open groove 522 is provided at one opposite end of the first threaded rod 52 and the second threaded rod 53. The open groove 522 is radially provided along the first threaded rod 52 or the second threaded rod 53. Figure 5 As shown, the opening of the open groove 522 faces the bottom wall of the box body 1; when the first plate 41 is in the above-mentioned open state, the transmission block 521 is not blocked and rotates into the open groove 522 on the first threaded rod 52 and the second threaded rod 53 under the drive of the torsion spring, presenting Figure 6 In this state, when the first threaded rod 52 is driven to rotate, the transmission block 521 is flat, which drives the second threaded rod 53 to rotate synchronously with the first threaded rod 52. When the first plate 41 is adjusted from the open state to the blocking state, the surface of the first plate 41 in contact with the bottom wall of the box body 1 contacts the transmission block 521, which pushes the transmission block 521 to rotate to Figure 5 In the state shown, passive adjustment of the transmission block 521 is achieved. This arrangement ensures that the same driving member can be used to drive the first threaded rod 52 and the second threaded rod 53 to rotate synchronously without affecting the first plate 41's blocking of the lower parts of the oil suction area 12 and the oil return area 13.

[0055] Furthermore, a groove 412 is provided in the middle of the first plate 41 corresponding to the position of the transmission block 521 . When the first plate 41 is in the blocking state, the transmission block 521 is driven to rotate by the torsion spring so that a portion of the transmission block 521 extends into the groove 412 .

[0056] Specifically, Figures 5 to 7As shown, a groove 412 is provided in the middle of the first plate 41, and the cross-section of the groove 412 is approximately a right triangle, and the hypotenuse of the right triangle corresponds to the plate surface of the first plate 41 facing the first threaded rod 52. In this way, when the first plate 41 is in the above-mentioned blocking position, the transmission block 521 rotates into the groove 412 under the drive of the torsion spring, so that the end part of the transmission block 521 away from the hinge extends into the groove 412, restricting the first plate 41 to the blocking position; obviously, in order to enable the first plate 41 to be smoothly pulled from the blocking state to the open state, a certain angle is formed between the short side of the groove 412 and the transmission block 521. Preferably, the position of the first plate 41 at the short side of the groove 412 is made of rubber material. When the first plate 41 is pulled upward, the transmission block 521 squeezes the rubber part of the first plate 41 until the transmission block 521 is completely moved out of the groove 412.

[0057] In another embodiment provided by the present invention, an adjusting member is provided inside the first threaded rod 52, the transmission block 521 is wedge-shaped, and a wedge-shaped groove 531 connected to the open groove 522 is opened at a position corresponding to the transmission block 521 on the second threaded rod 53. After the torsion spring drives the transmission block 521 to rotate into the open groove 522 on the second threaded rod 53, the adjusting member drives the transmission block 521 to be inserted into the wedge-shaped groove 531.

[0058] Furthermore, the adjusting member includes a sliding block 523 slidably installed in the first threaded rod 52, the transmission block 521 is hinged on the inner side of the sliding block 523, the sliding block 523 slides along the axial direction of the first threaded rod 52, and a spring 524 is also provided in the first threaded rod 52. The lower end of the first plate 41 is provided with an inclined surface. When the first plate 41 is in a blocking state, the spring 524 pushes the sliding block 523 to contact the first plate 41. When the first plate 41 is in an open state, the spring 524 pushes the sliding block 523 to move toward the second threaded rod 53, so that the transmission block 521 is inserted into the wedge-shaped groove 531.

[0059] Specifically, in the above embodiment, the transmission block 521 is driven by the torsion force of the torsion spring during the adjustment process of the first plate 41 from the blocking state to the open state. Figure 5 The status shown turns to Figure 6In the state shown, due to the limited torque of the torsion spring, in order to ensure that the transmission block 521 can smoothly rotate into the open groove 522, the dimension of the open groove 522 along the thickness direction of the transmission block 521 needs to be slightly larger than the thickness of the transmission block 521. As a result, when the first threaded rod 52 rotates, it is necessary to first drive the transmission block 521 to rotate until it contacts the groove wall of the open groove 522 on the second threaded rod 53 before it can drive the second threaded rod 53 to rotate synchronously, resulting in a phenomenon that the second threaded rod 53 rotates lags behind in the early stage of the rotation of the first threaded rod 52, that is, the first threaded rod 52 and the second threaded rod 53 rotate relative to each other, so that the first threaded rod 52 and the second threaded rod 53 rotate relative to each other. The open grooves 522 on the two are staggered. In the subsequent use process, the transmission block 521 cannot rotate into the open groove 522 on the second threaded rod 53 under the action of the torsion force of the torsion spring; in the present embodiment, an adjusting member is provided inside the first threaded rod 52, and the adjusting member includes a sliding block 523, and the sliding block 523 is slidably installed on one end of the first threaded rod 52 corresponding to the second threaded rod 53, and the sliding block 523 protrudes from or is flush with one end of the first threaded rod 52 corresponding to the second threaded rod 53, and a cavity for the sliding block 523 to slide is opened on the first threaded rod 52. Preferably, the sliding block 523 and the cavity are both cylindrical, and a spring 524 is provided in the cavity. Figure 5 , Figure 6 , Figure 7 and Fig. 9 As shown, different from the above-mentioned embodiment, in this embodiment, the transmission block 521 is hinged to the inner side of the sliding block 523, and the open groove 522 penetrates from the inside of the sliding block 523 along the radial direction of the first threaded rod 52 to the outside and faces the bottom wall of the box body 1. In addition, in this embodiment, a wedge-shaped groove 531 is provided on the second threaded rod 53, and the wedge-shaped groove 531 is trapezoidal, and the transmission block 521 is wedge-shaped, and the trapezoidal groove is adapted to the end of the transmission block 521 away from the hinge, and the lower part of the surface of the first plate 41 corresponding to the first threaded rod 52 is provided with an oblique angle 413, as shown in FIG. Figure 7 As shown, the shape of the open groove 522 in this embodiment is consistent with the shape of the transmission block 521 to ensure that the transmission block 521 does not contact the groove wall when rotating into the open groove 522. The shape of the open groove 522 is as shown in FIG. Fig. 9 shown.

[0060] In this way, when the first plate 41 is adjusted from the above-mentioned blocking state to the open state, it has at least a first stroke, a second stroke and a third stroke:

[0061] In the first stroke, the surface of the first plate 41 in contact with the bottom wall of the box body 1 is always below the first threaded rod 52 and the second threaded rod 53. At this time, the transmission block 521 is blocked by the first plate 41 and remains in Figure 5The state shown, while the sliding block 523 keeps contacting with the surface of the first plate 41, that is, the first plate 41 restricts the sliding block 523 within the first threaded rod 52;

[0062] In the second stroke, the surface of the first plate 41 in contact with the bottom wall of the box body 1 is between the first threaded rod 52 and the second threaded rod 53, and is higher than the highest point of the open groove 522 on the first threaded rod 52 and the second threaded rod 53 (because the first threaded rod 52 and the second threaded rod 53 are both inclined, the open groove 522 is also opened in an inclined state). At this time, the transmission block 521 is Figure 5 The status shown turns to Figure 6 In the state shown, that is, the transmission block 521 is rotated from the tilted downward to parallel to the axial direction of the first threaded rod 52, and is located in the open grooves 522 of both the first threaded rod 52 and the second threaded rod 53, while the first plate 41 keeps blocking the sliding block 523, and the sliding block 523 is still confined in the first threaded rod 52;

[0063] In the third stroke, the surface of the first plate 41 in contact with the bottom wall of the box body 1 is higher than the first threaded rod 52 and the second threaded rod 53. At this time, the first plate 41 no longer blocks the sliding block 523. The sliding block 523 extends outward from the end of the first threaded rod 52 under the elastic force of the spring 524, and drives the transmission block 521 to be inserted into the wedge-shaped groove 531 and contact the inner wall of the wedge-shaped groove 531.

[0064] When the first plate 41 is adjusted from the blocking state to the open state, it passes through the above-mentioned first stroke, second stroke and third stroke in sequence, that is, the transmission block 521 first rotates to the open groove 522 on the second threaded rod 53, and then the sliding block 523, pushed by the spring 524, drives the transmission block 521 to extend into the wedge-shaped groove 531. At this time, the first threaded rod 52 is rotated by a motor or manually, and the first threaded rod 52 drives the second threaded rod 53 to rotate synchronously through the transmission block 521, driving the scraper 51 to move along the bottom wall of the box body 1 to scrape off the sediment; when the first plate 41 is adjusted from the blocking state to the open state, it passes through the third stroke, the second stroke and the first stroke in sequence. In specific implementation, in order to ensure that the sliding block 523 can be pushed back into the first threaded rod 52 by the first plate 41, the lower part of the first plate 41 is provided with an oblique angle 413, such as Figure 7As shown in FIG. 5 , when the transmission block 521 is fully extended into the wedge-shaped groove 531, the length of the sliding block 523 extending from the end of the first threaded rod 52 is the maximum. At this time, the sliding block 523 is still directly below the bevel 413 on the first plate 41 to ensure that the first plate 41 can contact the end of the sliding block 523 extending from the first threaded rod 52 at the bevel 413 in the next process, and push the sliding block 523 at the bevel 413 to first push the sliding block 523 to retract into the first threaded rod 52, so that the transmission block 521 can be moved out of the wedge-shaped groove 531, and then the transmission block 521 is pushed by the first plate 41 to move the transmission block 521 out of the wedge-shaped groove 531. Figure 6 The status shown is adjusted to Figure 5 The state shown in the figure is maintained until the first plate 41 returns to the blocking state.

[0065] In this embodiment, the sliding block 523 is pushed by the spring 524. After the transmission block 521 rotates into the open groove 522 on the first threaded rod 52 and the second threaded rod 53, the axial position of the transmission block 521 along the first threaded rod 52 is further adjusted to ensure that the transmission block 521 can contact the inner wall of the wedge-shaped groove 531, so as to ensure that the second threaded rod 53 can rotate synchronously with the first threaded rod 52 at the initial stage of transmission without any lagging rotation.

[0066] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An oilfield beating hydraulic station includes an oil tank, a hydraulic pump, a power source and an actuator. The power source drives the hydraulic pump to pump the hydraulic oil in the oil tank to the actuator and drives the actuator to move to achieve the driving purpose. The oil tank includes a box body, an oil suction pipe and an oil return pipe installed on the box body, and is characterized in that: A barrier is provided in the box body, which divides the inner cavity of the box body into an oil suction area and an oil return area. A cleaning port is provided on one side of the box body, and a cleaning assembly is provided in the box body. After the barrier is driven to deform so that the lower parts of the oil suction area and the oil return area are connected, the cleaning assembly is driven to push the sediment on the bottom wall of the box body to the side where the cleaning port is located.

2. The oilfield beating hydraulic station according to claim 1, characterized in that: The barrier comprises a first plate and a second plate mounted outside the first plate, the lower portion of the first plate contacts the bottom wall of the box body, the second plate is fixedly connected to the inner wall of the box body, and the first plate is driven to shrink to the inside of the second plate so that the lower portions of the oil suction area and the oil return area are connected.

3. The oilfield beating hydraulic station according to claim 2, characterized in that: The surface of the first plate in contact with the inner wall of the box is provided with rubber strips.

4. The oilfield beating hydraulic station according to claim 2, characterized in that: The bottom wall of the box body is inclined, and the bottom wall of the box body is inclined from the oil suction area to the oil return area, and the cleaning port is arranged on the lowest side of the bottom wall of the box body.

5. The oilfield beating hydraulic station according to claim 2, characterized in that: A pull rod is fixedly connected to one side of the first plate away from the bottom wall of the box body, and the upper end of the pull rod sequentially penetrates the second plate and the top wall of the box body and extends to the outside.

6. The oilfield beating hydraulic station according to claim 4, characterized in that: The cleaning assembly comprises a scraper and a driving member. The lower part of the scraper is arranged obliquely and closely attached to the bottom wall of the box body. The driving member drives the scraper to slide obliquely downward along the bottom wall of the box body.

7. The oilfield beating hydraulic station according to claim 6, characterized in that: A convex block is arranged on the side wall of the box body away from the opening position of the cleaning port, and the convex block is matched with the scraper.

8. The oilfield beating hydraulic station according to claim 6, characterized in that: The driving member includes a first threaded rod and a second threaded rod rotatably installed in the box body. The first threaded rod and the second threaded rod are coaxially arranged and respectively located on both sides of the first plate. The first threaded rod and the second threaded rod are parallel to the bottom wall of the box body. Threaded holes matching the first threaded rod and the second threaded rod are opened on the scraper, and the thickness of the scraper is greater than the distance between the first threaded rod and the second threaded rod.

9. The oilfield beating hydraulic station according to claim 8, characterized in that: A transmission member is arranged on the first threaded rod, and the transmission member is driven to transmission-connect the first threaded rod with the second threaded rod.

10. The oilfield beating hydraulic station according to claim 9, characterized in that: The transmission member includes a transmission block rotatably mounted on the first threaded rod. The first threaded rod and the second threaded rod are both provided with an open groove for accommodating the transmission block. The opening of the open groove faces the bottom wall of the box body. A torsion spring is arranged at the hinge position of the transmission block. The torsion spring maintains the transmission block in the open groove on the first threaded rod.

Images