Energy-saving device for automatically adjusting balance rate of beam-pumping unit

Abstract

The utility model discloses an energy-saving device for automatically adjusting the balance rate of a beam-pumping unit, and relates to the field of oil well exploitation equipment. The energy-saving device for automatically adjusting the balance rate of the beam-pumping unit is used for adjusting the balance of a walking beam of the beam-pumping unit and comprises a flushing and draining device, a counterweight water tank and a water mixing tank, and the flushing and draining device comprises a booster pump, a return water removal pipe connected with a water inlet of the booster pump and the water mixing tank, and an upper water diversion pipe and a lower water diversion pipe connected with a water outlet of the booster pump and the counterweight water tank. A connecting pipe is arranged between the up-and-down water diversion pipe and the return water removal pipe, an electromagnetic valve is arranged on the connecting pipe, a one-way valve used for limiting fluid to flow into the counterweight water tank in a one-way mode is arranged on the portion, between the connecting pipe and the booster pump, of the up-and-down water diversion pipe, the tail end of the walking beam is connected with a mounting frame, and the top of the counterweight water tank is hinged to the mounting frame through a plurality of water tank suspension arms; and the up-down water conduit is connected with the bottom of the counterweight water tank. According to the energy-saving device for automatically adjusting the balance rate of the beam-pumping unit, it can be guaranteed that the gravity center of the counterweight water tank is stable and unchanged through gravity, and self-adaptive balance of the beam-pumping unit is achieved.

Description

Technical Field

[0001] The present application relates to the field of oil well production equipment, and in particular to an energy-saving device for automatically adjusting the balance rate of a beam pumping unit. Background Art

[0002] A beam pumping unit is a commonly used piece of oil production equipment. Its structure primarily consists of an electric motor, a reduction gearbox, a crank, a connecting rod, a walking beam, a donkey head, and a bracket. When the beam pumping unit is in operation, the motor's power is transmitted via a belt to the reduction gearbox. The reduction gearbox outputs the power and drives the crank to rotate. The rotating crank, through the connecting rod, pulls the walking beam back and forth, completing the pumping operation. A beam pumping unit is characterized by its ability to withstand alternating loads during its upstroke and downstroke. Large differences in load between the upstroke and downstroke can easily burn out the motor, causing the unit to malfunction. Furthermore, changes in pumping parameters, as well as changes in the wellbore's fluid volume and water content, can cause the unit to become unbalanced during normal operation. This imbalance significantly increases energy consumption and can cause vibration, leading to mechanical failures such as loose screws and cracked welds, directly impacting the unit's lifespan. Therefore, timely adjustment of the beam pumping unit's balance is essential.

[0003] Beam balancing is a common balancing method for beam pumping units. It achieves balance by adjusting the position and weight of the counterweight. While this balancing method is simple in structure, it is relatively difficult to adjust, and its effectiveness is significantly affected by changes in the unit's operating conditions. A common beam balancing method involves attaching a water tank to the end of the beam. However, when the water tank is fixed to the end of the beam so that it moves with the beam, the changing position of the water tank causes the water inside to flow back and forth, causing the center of gravity of the water tank to shift back and forth, affecting the stability of the water tank balance. Utility Model Content

[0004] The purpose of this application is to provide an energy-saving device for automatically adjusting the balance rate of a walking beam pumping unit, which can use gravity to ensure that the center of gravity of the counterweight water tank remains stable to achieve adaptive balance of the walking beam pumping unit, and avoid the balance being affected by the change in the center of gravity of the counterweight water tank caused by the swing of the walking beam.

[0005] This application is implemented as follows:

[0006] The present application provides an energy-saving device for automatically adjusting the balance rate of a walking beam pumping unit, which is used to adjust the balance of the walking beam of the walking beam pumping unit, including a flushing and drainage device, a counterweight water tank and a water mixing tank. The flushing and drainage device includes a booster pump, a return water pipe connecting the water inlet of the booster pump and the water mixing tank, and upper and lower water diversion pipes connecting the water outlet of the booster pump and the counterweight water tank. A connecting pipe is provided between the upper and lower water diversion pipes and the return water pipe, and an electromagnetic valve is provided on the connecting pipe. A one-way valve for limiting the one-way flow of fluid into the counterweight water tank is provided on the upper and lower water diversion pipes between the connecting pipe and the booster pump. The tail end of the walking beam is connected to a mounting frame, the top of the counterweight water tank is hinged to the mounting frame through multiple water tank booms, and the upper and lower water diversion pipes are connected to the bottom of the counterweight water tank.

[0007] In some optional embodiments, the internal top wall of the counterweight water tank is connected to a fixed steel plate, the bottom of each water tank boom passes through the top wall of the counterweight water tank and is connected to the fixed steel plate, and the top of each water tank boom is hinged to the mounting frame through a hinge shaft.

[0008] In some optional embodiments, at least one reinforcement column is connected between each water tank boom.

[0009] In some optional embodiments, an overflow vent is provided on the top of the counterweight water tank.

[0010] In some optional embodiments, a Y-type filter is provided on the water return pipe between the booster pump and the connecting pipe.

[0011] In some optional embodiments, a liquid level sensor is provided in the counterweight water tank.

[0012] In some optional embodiments, at least one retractable buffer damping rod is connected between the counterweight water tank and the bottom of the mounting frame.

[0013] In some optional embodiments, the counterweight water tank is a horizontally arranged cylindrical box, and the fixed steel plate is an arc-shaped steel plate fixed to the inner top wall of the counterweight water tank.

[0014] The beneficial effects of the present application are: the energy-saving device for automatically adjusting the balance rate of a walking beam pumping unit provided in the present application is used to adjust the balance of the walking beam of the walking beam pumping unit, including a flushing and drainage device, a counterweight water tank and a water mixing tank. The flushing and drainage device includes a booster pump, a return water pipe connecting the water inlet of the booster pump and the water mixing tank, and upper and lower water pipes connecting the water outlet of the booster pump and the counterweight water tank. A connecting pipe is provided between the upper and lower water pipes and the return water pipe, and an electromagnetic valve is provided on the connecting pipe. A one-way valve for limiting the one-way flow of fluid into the counterweight water tank is provided on the upper and lower water pipes between the connecting pipe and the booster pump. The tail end of the walking beam is connected to a mounting frame, the top of the counterweight water tank is hinged to the mounting frame through multiple water tank booms, and the upper and lower water pipes are connected to the bottom of the counterweight water tank. The energy-saving device for automatically adjusting the balance rate of a walking beam pumping unit provided in the present application can achieve adaptive balance of the walking beam pumping unit by using gravity to ensure that the center of gravity of the counterweight water tank remains stable and unchanged by hingedly connecting the counterweight water tank to the mounting frame at the tail end of the walking beam using a water tank boom, thereby avoiding the balance being affected by the change in the center of gravity of the counterweight water tank caused by the swing of the walking beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A schematic diagram of the structure of an energy-saving device for automatically adjusting the balance rate of a beam pumping unit provided in one embodiment of the present application;

[0017] Figure 2 A schematic diagram of a partial perspective structure of the connection between a water tank boom and a counterweight water tank in a beam pumping unit balance rate automatic adjustment and energy-saving device provided in one embodiment of the present application, from a first perspective;

[0018] Figure 3 A schematic diagram of a partial perspective structure from a second perspective showing the connection between the water tank boom and the counterweight water tank in the energy-saving device for automatically adjusting the balance rate of a beam pumping unit provided in one embodiment of the present application;

[0019] Figure 4 A schematic structural diagram of an energy-saving device for automatically adjusting the balance rate of a beam pumping unit provided in another embodiment of the present application.

[0020] In the figure: 100, walking beam pumping unit; 110, walking beam; 120, pumping unit base; 200, flushing and drainage device; 210, booster pump; 220, return water pipe; 230, upper and lower water pipes; 240, connecting pipe; 250, solenoid valve; 260, one-way valve; 270, Y-type filter; 280, return water valve; 300, counterweight water tank; 310, water mixing tank; 320, mounting frame; 330, water tank boom; 340, liquid level sensor; 350, fixing steel plate; 360, hinge shaft; 370, reinforcement column; 380, overflow exhaust port; 390, buffer damping rod. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0026] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0027] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0028] The features and performance of the energy-saving device for automatically adjusting the balance rate of a beam pumping unit of the present application will be further described in detail below in conjunction with the embodiments.

[0029] like Figure 1 、 Figure 2 and Figure 3 As shown, the embodiment of the present application provides an energy-saving device for automatically adjusting the balance rate of a beam pumping unit, which is used to adjust the balance of a beam pumping unit 100 mounted on a pumping unit base 120. The energy-saving device for automatically adjusting the balance rate of a beam pumping unit includes a flushing and drainage device 200, a cylindrical counterweight water tank 300, and a water mixing tank 310 mounted on the pumping unit base 120.

[0030] Among them, the flushing and drainage device 200 includes a booster pump 210, a return water pipe 220 connecting the water inlet of the booster pump 210 and the bottom of the water mixing tank 310, and an upper and lower water pipes 230 connecting the water outlet of the booster pump 210 and the counterweight water tank 300. A connecting pipe 240 is provided between the upper and lower water pipes 230 and the return water pipe 220. A solenoid valve 250 is provided on the connecting pipe 240. A one-way valve 260 is provided on the upper and lower water pipes 230 between the connecting pipe 240 and the booster pump 210 to limit the one-way flow of the fluid into the counterweight water tank 300. A Y-type filter 270 is provided on the return water pipe 220 between the booster pump 210 and the connecting pipe 240. The bottom of the water mixing tank 310 is connected to the return water pipe 220 through a return valve 280.

[0031] The tail end of the walking beam 110 is connected to a mounting frame 320. The counterweight water tank 300 is a cylindrical box with a horizontal axis. The top ends of the counterweight water tank 300 are hinged to the mounting frame 320 via two water tank booms 330. A curved fixed steel plate 350 is connected to the top wall of the counterweight water tank 300. The bottoms of the two water tank booms 330 penetrate the top wall of the counterweight water tank 300 and connect to the fixed steel plate 350. The tops of the two water tank booms 330 are hinged to the mounting frame 320 via hinges 360. Upper and lower water pipes 230 are connected to the bottom of one end of the counterweight water tank 300. A reinforcing column 370 is connected between the two water tank booms 330. A liquid level sensor 340 is installed in the counterweight water tank 300, and an overflow vent 380 is provided at the top of the counterweight water tank 300.

[0032] The embodiment of the present application provides an automatic adjustment and energy-saving device for the balance rate of a walking beam pumping unit. The working principle of the device is as follows: a water mixing tank 310 is fixedly provided on the pumping unit base 120 of the walking beam pumping unit for storing water and mixing water into the oil production well to prevent salt accumulation in the well from blocking the pipe string. The water mixing tank 310 is used as a water supply source and drainage container for the counterweight water tank 300, which can minimize the consumption and waste of water sources. The tail end of the walking beam 110 is fixedly connected to the mounting frame 320 by bolts, and the hinge shaft 360 is passed through the mounting frame 320 and then the two ends are respectively passed through a water tank boom 330. The bottoms of the two water tank booms 330 are respectively passed through the top wall of the counterweight water tank 300 arranged horizontally with the axis, and then connected to the arc-shaped fixed steel plate 350 fixed on the top of the counterweight water tank 300, so that the counterweight water tank 300 is connected to the mounting frame 320 using two water tank booms 330. The hinge shaft 360 is hinged, and the bottom of one end surface of the counterweight water tank 300 is connected to the booster pump 210 through the upper and lower water supply pipes 230. The water mixing tank 310 and the booster pump 210 are connected through the return water pipe 220, so that the return water valve 280 in the return water pipe 220 can be controlled to be connected when needed. The booster pump 210 uses the water stored in the water mixing tank 310 to pass into the counterweight water tank 300 through the return water pipe 220 and the one-way valve 260 on the upper and lower water supply pipes 230, thereby increasing the weight of the counterweight water tank 300 to achieve a counterweight effect, ensuring that the counterweight water tank 300 is stably hung and connected. At the same time, the center of gravity of the counterweight water tank 300 can always be kept unchanged during the up and down stroke movement of the walking beam pumping unit, thereby avoiding the counterweight water tank 300 from swinging when the walking beam 110 of the walking beam pumping unit swings, causing the internal water flow to cause the center of gravity to change and affect the balance.

[0033] The counterweight water tank 300 is equipped with a liquid level sensor 340 to monitor the water level. If the water level in the counterweight water tank 300 is excessive, the solenoid valve 250 on the connecting pipe 240 is activated. This allows the water in the counterweight water tank 300 to flow through the upper and lower water pipes 230, where it is blocked by the one-way valve 260. The water then flows through the connecting pipe 240 and into the water mixing tank 310 for storage. This prevents excess water from overflowing the counterweight water tank 300 and affecting balance. An overflow vent 380 is located at the top of the counterweight water tank 300 for exhaust. A Y-type filter 270 is installed on the return pipe 220 between the booster pump 210 and the connecting pipe 240. This allows the water in the water mixing tank 310 to be filtered by the Y-type filter 270, pressurized by the booster pump 210, and then introduced through the upper and lower water pipes 230 into the counterweight water tank 300 for counterweight balancing.

[0034] In other optional embodiments, such as Figure 4 As shown, at least one retractable buffer damping rod 390 is connected between the counterweight water tank 300 and the bottom of the mounting frame 320. By arranging the retractable buffer damping rod 390 between the counterweight water tank 300 and the bottom of the mounting frame 320, when the walking beam pumping unit is working and drives the walking beam 110 and the mounting frame 320 to swing, the mounting frame 320 can be swung upward or downward to push the buffer damping rod 390 to retract or extend, so that the buffer damping rod 390 correspondingly pulls or pushes the mounting frame 320 to the counterweight water tank 300 hinged through the water tank boom 330, ensuring that the counterweight water tank 300 is stably raised and lowered when the walking beam 110 swings to achieve balanced operation.

[0035] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

Claims

1. A beam pumping unit balance rate automatic adjustment energy-saving device, used to adjust the beam balance of a beam pumping unit, characterized in that: It includes a flushing and drainage device, a counterweight water tank and a water mixing tank. The flushing and drainage device includes a booster pump, a return water pipe connecting the booster pump water inlet and the water mixing tank, and an upper and lower water diversion pipes connecting the booster pump water outlet and the counterweight water tank. A connecting pipe is provided between the upper and lower water diversion pipes and the return water pipes. A solenoid valve is provided on the connecting pipe. A one-way valve for limiting the one-way flow of fluid into the counterweight water tank is provided on the upper and lower water diversion pipes between the connecting pipe and the booster pump. The tail end of the walking beam is connected to a mounting frame. The top of the counterweight water tank is hinged to the mounting frame through multiple water tank arms. The upper and lower water diversion pipes are connected to the bottom of the counterweight water tank.

2. The energy-saving device for automatically adjusting the balance rate of a beam pumping unit according to claim 1 is characterized in that: The inner top wall of the counterweight water tank is connected to a fixed steel plate, the bottom of each water tank boom passes through the top wall of the counterweight water tank and is connected to the fixed steel plate, and the top of each water tank boom is hinged to the mounting frame through a hinge shaft.

3. The energy-saving device for automatically adjusting the balance rate of a beam pumping unit according to claim 2 is characterized in that: At least one reinforcement column is connected between each of the water tank booms.

4. The energy-saving device for automatically adjusting the balance rate of a beam pumping unit according to claim 1, characterized in that: An overflow exhaust port is provided on the top of the counterweight water tank.

5. The energy-saving device for automatically adjusting the balance rate of a beam pumping unit according to claim 1 is characterized in that: A Y-type filter is provided on the water return pipe between the booster pump and the connecting pipe.

6. The energy-saving device for automatically adjusting the balance rate of a beam pumping unit according to claim 1, characterized in that: A liquid level sensor is provided in the counterweight water tank.

7. The energy-saving device for automatically adjusting the balance rate of a beam pumping unit according to claim 1, characterized in that: At least one retractable buffer damping rod is connected between the counterweight water tank and the bottom of the mounting frame.

8. The energy-saving device for automatically adjusting the balance rate of a beam pumping unit according to claim 2, characterized in that: The counterweight water tank is a horizontally arranged cylindrical box body, and the fixed steel plate is an arc-shaped steel plate fixed to the inner top wall of the counterweight water tank.

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