Low-noise tower-type pumping unit

Abstract

The invention relates to a low-noise tower-type pumping unit, and belongs to the technical field of oil extraction tower-type pumping units. The tower-type pumping unit comprises a rack, the reciprocating screw rod is arranged on the rack and can rotate under the driving of the driving mechanism, and a groove track is arranged on the surface of the reciprocating screw rod; the reciprocating lifting frame is arranged on the reciprocating screw rod, a screw rod sliding sleeve is fixed on the reciprocating lifting frame, the screw rod sliding sleeve can do reciprocating motion along the groove track under the unidirectional rotation driving of the reciprocating screw rod, and the reciprocating lifting frame is connected with the reciprocating screw rod through the screw rod sliding sleeve; and the balance box is arranged on the reciprocating lifting frame and is further connected with the sucker rod through a linkage mechanism, so that the sucker rod is driven to do reciprocating motion along the reciprocating screw rod. The tower-type pumping unit is improved on the basis of an existing tower-type pumping unit, the novel reversing mechanism is adopted to replace an original mechanical reversing and electrical control reversing mode, and the tower-type pumping unit has the advantages of being low in noise, convenient and fast to operate, compact in structure and high in safety.

Description

Technical Field

[0001] The present application relates to a low-noise tower pumping unit, belonging to the technical field of oil production tower pumping units. Background Art

[0002] At present, deep well pumps used in oilfield production include beam pumps and tower pumps. Among them, beam pumps have been extended to many models. The beam pump has a four-link structure, which has problems such as large size, heavy weight, large floor space, difficult maintenance, difficult balance adjustment and complex operation. In recent decades, the main development has been tower pumps, which are divided into two categories: mechanical and electrical control reversing. The earliest tower pumps were wide belt pumps with mechanical reversing, which relied on special chain links to drive the commutator to swing left and right to achieve reversing. Due to too many mechanical moving parts, noise will be generated after a long time of operation. The entire chain box also needs lubrication, and there is a risk of oil leakage in the box.

[0003] At present, most new tower pumps use inverters to control the forward and reverse rotation of the motor to achieve reversal. Although this makes the mechanical part simpler, it has problems such as complex electrical appliances, difficult management, repeated reversal of the motor and high energy consumption. Moreover, this type of electrical reversing pumping unit needs to rely on auxiliary winches or electric hoists when hanging loads or adjusting the impact distance. Once the transmission belt of this tower pumping unit breaks, the balance box will fall instantly, generating a huge impact force, which will not only damage the gearbox or other components, but also cause personal accidents due to flying iron blocks.

[0004] Patent CN202010689906.4 discloses a screw-driven tower pumping unit, including a tower, a sprocket is provided at the top of the tower, a chain is mounted on the sprocket, one end of the chain is connected to the sucker rod, and the other end passes through the screw to connect the counterweight box, the screw is connected to the motor, and the motor drives the screw through the motor synchronous pulley, the synchronous belt, and the screw synchronous pulley. The tail end of the screw is placed in the lubricating oil tank. The sprocket has an even number of teeth, the main body of the chain is made of 45# steel, and its connecting rod is made of bronze. It is driven by a combination of ball screw pair and simple circuit control through the drive system, which effectively reduces the energy loss of the reduction transmission components, thereby achieving energy saving and environmental protection, and improving production efficiency. However, it adopts the method of screw (ball screw) transmission, mainly relying on the forward and reverse rotation of the variable frequency motor, and the electrical control is complex and prone to failure, and there is a problem of frequent maintenance.

[0005] Patent CN202311639190.7 discloses a mechanical reversing tower pumping unit, including a driving device installed on the well platform below the tower, and a power transmission device. A cantilever beam with a front reversing pulley and a rear reversing pulley is installed on the platform through a hinge shaft. An upper sprocket and a lower sprocket for driving the main chain are installed on the inner side of the tower. The main chain drives the reversing arms on both sides of the counterweight through the chain card, and then drives the counterweight to reciprocate up and down along the guide rail in the tower. The counterweight pulls the wire rope and the pumping rod to run synchronously at the same time. After each chain card crosses the upper sprocket and the lower sprocket, the counterweight will complete an up and down reversing action. Because its reversing principle mainly relies on the reversing of the top chain card, the chain card is prone to jamming or failure during its operation, making its reliability poor.

[0006] Patent CN201220409200.9 discloses an intelligent reversing integrated tubular pump oil production device, including a wellhead, an oil storage chamber, an oil outlet pipeline, a casing, an oil pipe hanger, an oil pipe, a sucker rod and an oil pump, the upper end of the sucker rod is fixed to a polished rod through a first coupling, the upper end of the polished rod is connected to the lower end of the ball screw auxiliary screw through a second coupling, a support ring is fixed to the upper part of the oil storage chamber, a permanent magnet motor is arranged on the upper part of the support ring, the main shaft of the permanent magnet motor is connected to the hollow shaft through a spline, the hollow shaft is fixedly connected to the ball screw auxiliary screw nut, and the permanent magnet motor is connected to the controller through a wire. The intelligent reversing integrated tubular pump oil production device simplifies the overall structure and effectively improves the transmission efficiency by eliminating the reducer and the four-bar linkage, and can effectively improve the pump efficiency by controlling the motor stop time interval, which is particularly obvious for low permeability wells. However, since it adopts a ball screw, the rise and fall of the screw is used to drive the sucker rod to rise and fall, which has the technical problem of easy jamming or device damage.

[0007] Therefore, in view of the shortcomings of the tower oil pumping unit in the prior art, there is an urgent need for a new type of oil pumping unit that can not only solve the problems of oil leakage, noise, and large footprint of the existing belt drive unit, but also solve the complex operation, high failure rate and low safety of the electrical reversing silent oil pumping unit, so as to meet the current mining scale and improve the production efficiency of oil wells. Summary of the invention

[0008] In order to solve the above problems, the present application proposes a low-noise tower oil pump, which is an improvement on the existing tower oil pump and adopts a new reversing mechanism to replace the original mechanical reversing and electrical control reversing method. It has the characteristics of low noise, easy operation, compact structure and high safety. It can solve the problems of oil leakage and noise of existing wide belt oil pumps, and solve the complex operation and safety problems of existing silent machines.

[0009] The present application provides a low-noise tower oil pump, comprising:

[0010] frame;

[0011] A reciprocating screw rod is arranged on the frame, the reciprocating screw rod can rotate under the drive of the driving mechanism, and a groove track is arranged on the surface of the reciprocating screw rod;

[0012] A reciprocating lifting frame is arranged on the reciprocating screw rod, a screw rod sleeve is fixed on the reciprocating lifting frame, the screw rod sleeve can make reciprocating motion along the groove track under the unidirectional rotation drive of the reciprocating screw rod, the reciprocating lifting frame is connected to the reciprocating screw rod through the screw rod sleeve, and can make reciprocating motion along the reciprocating screw rod under the drive of the screw rod sleeve;

[0013] A balance box is arranged on the reciprocating lifting frame, and the balance box can reciprocate along the reciprocating screw rod under the drive of the reciprocating lifting frame. The balance box is also connected to the sucker rod through a linkage mechanism, thereby driving the sucker rod to reciprocate along the reciprocating screw rod.

[0014] Optionally, the screw sleeve is rollingly connected or slidingly connected to the reciprocating screw.

[0015] Optionally, the screw sleeve is rollingly connected to the reciprocating screw, and the screw sleeve is provided with a ball guide; or,

[0016] The screw sleeve is slidably connected to the reciprocating screw, and the screw sleeve is provided with a crescent guide block.

[0017] Optionally, an umbrella-shaped gearbox is provided between the driving mechanism and the reciprocating screw, and the umbrella-shaped gearbox is used to increase torque while reversing.

[0018] Optionally, the driving mechanism and the umbrella-shaped gearbox are arranged on a side of the frame close to the ground.

[0019] Optionally, the frame is further provided with a straightening light column, and the reciprocating lifting frame is provided with a sliding block which can rise or fall along the straightening light column.

[0020] Optionally, the number of the righting light beams is two.

[0021] Optionally, the distance between the straightening light column and the reciprocating screw rod is the same, and the axes of the two straightening light columns and the reciprocating screw rod are arranged in an isosceles triangle.

[0022] Optionally, the balance box and the sucker rod are connected via a transmission belt, and a driven roller is provided in the middle of the transmission belt.

[0023] Optionally, a translation drive mechanism is provided at the bottom of the frame, which can drive the entire tower pump to translate.

[0024] Optionally, grease is added to the groove track of the reciprocating screw for lubrication.

[0025] The beneficial effects of this application include but are not limited to:

[0026] 1. The low-noise tower oil pump provided in the present application replaces the traditional belt-type oil pump and adopts a direct connection between the reciprocating screw and the lifting frame, thereby improving the transmission efficiency and reducing the maintenance workload.

[0027] 2. The low-noise tower oil pump provided in the present application uses a reciprocating screw to achieve lifting and reversing. The purely mechanical reversing structure is simple and reliable. Compared with the existing belt-type mechanical oil pumps, it can reduce noise and oil leakage, and is safer than electric reversing oil pumps.

[0028] 3. The low-noise tower oil pump provided in the present application, the umbrella gear in the umbrella gearbox cooperates with the reciprocating screw, which not only plays a role in changing direction, but also can reduce speed and increase torque, thereby improving the safety and stability of the oil pump reversing.

[0029] 4. The low-noise tower oil pump provided in the present application adopts a crescent guide block or a ball guide in conjunction with a reciprocating screw to provide power for the ascent and descent of the reciprocating lifting frame. It does not require forward and reverse rotation of the motor, which can save energy and improve the operating stability of the reciprocating lifting frame.

[0030] 5. The low-noise tower oil pump provided in the present application uses a reciprocating screw rod and a reciprocating lifting frame to drive the balance box to move reciprocatingly. Therefore, the balance box is more stable than the balance box in the prior art. Therefore, the eight-angle straightening mechanism set in the prior art to stabilize the balance box can be omitted, making the balance box stable and safe, while the overall structure is simple, reliable and easy to maintain.

[0031] 6. The low-noise tower oil pump provided in the present application adopts a straightening light column in combination with a reciprocating lifting frame, and is arranged in a triangle with the reciprocating screw rod, which can prevent the reciprocating lifting frame from tipping over and improve the overall stability, thereby ensuring the normal and efficient operation of the oil pump.

[0032] 7. The low-noise tower oil pump provided in the present application adopts mechanical reversing, and the screw sleeve used can be provided with a self-locking structure, so that the balance box can be automatically locked on the reciprocating screw, making the device safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0034] Figure 1 This is a structural schematic diagram of a low-noise tower oil pumping unit according to an embodiment of the present application;

[0035] Figure 2 This is a schematic diagram of a model of a low-noise tower oil pumping unit according to an embodiment of the present application.

[0036] List of parts and reference numerals:

[0037] 1. Screw sleeve, 2. Sucker rod, 3. Driven roller, 4. Transmission belt, 5. Straightening light column, 6. Reciprocating lifting frame, 7. Reciprocating screw, 8. Balance box, 9. Umbrella-type gearbox, 10. Driving mechanism. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0039] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0041] In addition, in the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0045] refer to Figures 1-2 The present application provides a low-noise tower pumping unit, comprising:

[0046] frame;

[0047] A reciprocating screw rod is arranged on the frame, the reciprocating screw rod can rotate under the drive of the driving mechanism, and a groove track is arranged on the surface of the reciprocating screw rod;

[0048] A reciprocating lifting frame is arranged on the reciprocating screw rod, a screw rod sleeve is fixed on the reciprocating lifting frame, the screw rod sleeve can make reciprocating motion along the groove track under the unidirectional rotation drive of the reciprocating screw rod, the reciprocating lifting frame is connected to the reciprocating screw rod through the screw rod sleeve, and can make reciprocating motion along the reciprocating screw rod under the drive of the screw rod sleeve;

[0049] The balance box is arranged on the reciprocating lifting frame. The balance box can reciprocate along the reciprocating screw rod under the drive of the reciprocating lifting frame. The balance box is also connected to the sucker rod through a linkage mechanism, thereby driving the sucker rod to reciprocate along the reciprocating screw rod.

[0050] The tower pumping unit provided in the present application includes a frame and a driving mechanism, a reciprocating screw, a screw sleeve, a reciprocating lifting frame, a balance box and a sucker rod arranged on the frame; the driving mechanism rotates unidirectionally to drive the reciprocating screw to rotate unidirectionally, and a groove track is arranged on the surface of the reciprocating screw, the screw sleeve is arranged on the reciprocating screw and can move along the groove track, and since the screw sleeve is fixedly arranged on the reciprocating lifting frame, the reciprocating lifting frame can reciprocate and rise or fall under the drive of the reciprocating screw, and the balance box is arranged on the reciprocating lifting frame, and then the reciprocating lifting frame can drive the balance box to reciprocate and rise or fall, and finally the balance box drives the sucker rod to reciprocate and rise or fall, and the reciprocating rise or fall of the sucker rod can realize the operation of pumping oil.

[0051] In the prior art, mechanically controlled tower pumps use mechanical commutation, which has many moving parts and causes problems such as high noise and troublesome maintenance after being used for a long time. Electrically controlled tower pumps currently use frequency converters to control the forward and reverse rotation of the drive mechanism to achieve commutation, in which the drive mechanism repeatedly reverses and starts, which not only consumes more energy, but also causes the stability of the balance box to be low, posing a safety hazard to the balance box.

[0052] The tower oil pump provided by the present application does not require forward and reverse rotation of the driving mechanism, but only requires unidirectional rotation to drive the reciprocating screw to rotate unidirectionally, and then the screw sleeve can reciprocate up or down along the groove track line on the reciprocating screw. This not only solves the problem of high motor energy consumption caused by the need for an inverter to control the forward and reverse rotation of the motor in the prior art, but also has better safety performance than electric reversing oil pumps. Its balance box is located on the reciprocating lifting frame for higher stability. Therefore, the eight-direction straightening mechanism required to be set for the balance box on the existing tower oil pump can be omitted, making the structure of the tower oil pump more streamlined and easier to maintain and use.

[0053] It should be noted that Figure 2 The figure shows a model machine. For demonstration purposes and to more clearly show the movement of the screw sleeve in the reciprocating screw, no reciprocating lifting frame, balance box and other structures are set. Instead, the transmission belt is directly installed on the screw sleeve. Based on the scheme disclosed in this application, technical personnel in this field can design the corresponding reciprocating lifting frame structure as needed, as well as how to install the balance box and other structures accordingly. This is a basic operation that technical personnel in this field can complete.

[0054] As an implementation mode, the screw sleeve is rollingly connected or slidingly connected to the reciprocating screw.

[0055] As an implementation mode, the screw sleeve is rollingly connected to the reciprocating screw, and the screw sleeve is provided with a ball guide.

[0056] As another embodiment, the screw sleeve is slidably connected to the reciprocating screw, and the screw sleeve is provided with a crescent guide block. The crescent guide block is more reliable and can improve the operating stability of the device. In addition, since the crescent guide block is a consumable part, the crescent guide block can be made of wear-resistant material and be regularly inspected or replaced.

[0057] It should be noted that the screw sleeve in the present application can be implemented in the following two ways: one is a ball guide, which uses rolling friction, and the other is a crescent guide block, which uses sliding friction. In addition, those skilled in the art can design the lead according to the form of the above-mentioned ball guide or crescent guide block, which can be two-line or three-line. In addition, the existing ball guide or crescent guide block can be provided with a self-locking mechanism as needed to achieve the effect that the balance box automatically locks on the reciprocating screw after the motor stops, further improving the safety of the tower pumping unit.

[0058] It should be noted that those skilled in the art can make adjustments or improvements based on the scheme of the reciprocating screw in the prior art, including but not limited to adding a self-locking structure to improve safety, improving the track structure of the groove track or improving the slider structure that cooperates with the groove track, for example, making improvements with reference to the scheme in Chinese patent CN203532648U, etc.

[0059] As an implementation mode, the reciprocating screw rod is made of stainless steel or austenitic steel. In order to improve the safety of the reciprocating screw rod, corrosion-resistant austenitic steel can be used.

[0060] As an implementation method, the groove track on the reciprocating screw is a double-layer sliding track, which can enable the screw sleeve to achieve reciprocating motion without changing the rotation direction of the reciprocating screw main shaft, and the setting of the double-layer sliding track can improve the operating stability of the reciprocating lifting frame.

[0061] It should be noted that parameters such as the spacing between the double-layer sliding tracks on the reciprocating screw and the straight-line distance of the same sliding track along one circle of the reciprocating screw can be set as needed. Factors to be considered include but are not limited to improving lifting efficiency and ensuring lifting stability.

[0062] As an implementation method, an umbrella-shaped gearbox is provided between the driving mechanism and the reciprocating screw rod. The umbrella-shaped gearbox is used to increase torque while switching. The increased torque can ensure that the driving mechanism has sufficient power to drive the reciprocating lifting frame and has higher stability.

[0063] As an implementation mode, the driving mechanism and the umbrella-shaped gearbox are arranged on a side of the frame close to the ground, and such an arrangement can facilitate maintenance by operators.

[0064] As an implementation mode, a straightening light column is further provided on the frame, and a slider which can rise or fall along the straightening light column is provided on the reciprocating lifting frame. By providing the straightening light column, the movement stability of the reciprocating lifting frame can be improved.

[0065] As an implementation method, the straightening light column is connected to the slider by sliding or rolling. For the sliding connection method, for example, a sliding groove is provided on the straightening light column, and the slider can slide along the sliding groove. For the rolling connection method, a ball is provided between the slider and the straightening light column so that the slider moves along the straightening light column. For those skilled in the art, the above-mentioned setting can be implemented by conventional techniques in the field as needed, and the above-mentioned example is only one of the implementation methods, and other methods should also be within the protection scope of the present application scheme.

[0066] As an implementation method, the number of the righting light beams is two.

[0067] As an implementation mode, the distance between the straightening light column and the reciprocating screw is the same, and the axes of the two straightening light columns and the reciprocating screw are arranged in an isosceles triangle. The arrangement of the triangular structure can improve the movement stability of the reciprocating lifting frame.

[0068] As an implementation mode, the balance box and the sucker rod are connected by a transmission belt, and a driven roller is provided in the middle of the transmission belt.

[0069] As a specific implementation method, a driven roller is arranged on the top of the frame, and a driven roller is arranged in the middle of the transmission belt, which can realize the reversal of the transmission belt movement. The rise or fall of the balance box drives the transmission belt to move, and then the transmission belt drives the sucker rod to fall or rise.

[0070] As an implementation method, a translation drive mechanism is provided at the bottom of the frame, which can drive the entire tower pumping unit to translate. When operating in an oil well, the translation drive mechanism can be used to make the pumping unit give way, which is not only safer but also more convenient to operate.

[0071] As an implementation method, grease is added to the groove track of the reciprocating screw for lubrication. During the operation of the oil pump, since the crescent guide block or the ball guide is connected to the reciprocating screw to realize the reversal and stable operation of the oil pump, the ball guide or the crescent guide block is a vulnerable part in the oil pump. Therefore, it is necessary not only to ensure the lubrication of the ball guide or the crescent guide block during the operation of the machine, but also to perform regular maintenance and replacement.

[0072] As a specific implementation method, the present application scheme adopts a reciprocating screw to realize the reversing, and relies on the reciprocating screw to realize the conversion of the oil pumping unit from rotary motion to reciprocating motion. The reciprocating screw is matched with an umbrella gearbox, which meshes with the reciprocating screw through the umbrella gear, and realizes the rotation of the reciprocating screw through the rotation of the umbrella gear. The reciprocating screw is then connected to a reciprocating lifting frame with a crescent guide block or a ball guide block, so that the reciprocating lifting frame can rise or fall reciprocatingly along the reciprocating screw, thereby driving the transmission belt and the balance box to rise or fall, thereby realizing the reciprocating rise or fall of the sucker rod in the oil pumping unit to perform the oil pumping operation.

[0073] As a specific implementation, a double-layer sliding track is arranged on the reciprocating screw rod, and a reciprocating ball guide is also arranged. When the reciprocating lifting frame moves to the top, the reciprocating ball guide is used to realize the downward movement of the reciprocating lifting frame, and the self-locking of the balance box can also be realized, thereby improving the operation safety of the overall device. When the reciprocating lifting frame moves to the bottom, the reciprocating ball guide is also used to realize the upward movement of the reciprocating lifting frame. Specifically, the track on the reciprocating screw rod adopts a double-track mode to improve the operation safety and stability of the reciprocating lifting frame on the reciprocating screw rod.

[0074] The working method of the present application scheme includes the following process: the driving mechanism is directly connected to the umbrella-shaped gearbox, the umbrella-shaped gearbox reduces speed through the umbrella-shaped gear, increases torque and reduces speed, and then transmits it to the rotating reciprocating screw, the reciprocating screw is lubricated with grease, such as molybdenum disulfide grease, and the reciprocating lifting frame is driven to rise and fall by the rotation of the reciprocating screw. Further, the reciprocating lifting frame can also be straightened by the straightening light column, which can prevent the reciprocating lifting frame from flipping over and thus improve stability, wherein the reciprocating lifting frame can drive the balance box to rise or fall, and finally the balance box drives the sucker rod through the transmission belt, thereby being able to meet the rising or falling movement in the pumping operation.

[0075] As for the matching relationship between the screw sleeve and the reciprocating screw, when the screw sleeve moves to the top, the ball guide or crescent guide block fixedly connected to the reciprocating lifting frame enters the downward groove, the rotation direction of the reciprocating screw remains unchanged, and the reciprocating lifting frame moves downward again. After the ball guide or crescent guide block moves to the bottom, it enters the upward groove again, and the rotation direction of the reciprocating screw remains unchanged, thus realizing reciprocating motion.

[0076] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0077] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A low-noise tower pumping unit, characterized in that: include: frame; A reciprocating screw rod is arranged on the frame, the reciprocating screw rod can rotate under the drive of the driving mechanism, and a groove track is arranged on the surface of the reciprocating screw rod; A reciprocating lifting frame is arranged on the reciprocating screw rod, a screw rod sleeve is fixed on the reciprocating lifting frame, the screw rod sleeve can make reciprocating motion along the groove track under the unidirectional rotation drive of the reciprocating screw rod, the reciprocating lifting frame is connected to the reciprocating screw rod through the screw rod sleeve, and can make reciprocating motion along the reciprocating screw rod under the drive of the screw rod sleeve; A balance box is arranged on the reciprocating lifting frame, and the balance box can reciprocate along the reciprocating screw rod under the drive of the reciprocating lifting frame. The balance box is also connected to the sucker rod through a linkage mechanism, thereby driving the sucker rod to reciprocate along the reciprocating screw rod.

2. The low noise tower pumping unit according to claim 1, characterized in that: The screw rod sleeve is in rolling connection or sliding connection with the reciprocating screw rod.

3. The low noise tower pumping unit according to claim 2, characterized in that: The screw sleeve is in rolling connection with the reciprocating screw, and the screw sleeve is provided with a ball guide; or, The screw sleeve is slidably connected to the reciprocating screw, and the screw sleeve is provided with a crescent guide block.

4. The low noise tower pumping unit according to claim 1, characterized in that: An umbrella-shaped gearbox is provided between the driving mechanism and the reciprocating screw rod, and the umbrella-shaped gearbox is used for increasing torque while reversing.

5. The low noise tower pumping unit according to claim 4, characterized in that: The driving mechanism and the umbrella-shaped gearbox are arranged on a side of the frame close to the ground.

6. The low noise tower pumping unit according to claim 1, characterized in that: The frame is also provided with a straightening light column, and the reciprocating lifting frame is provided with a sliding block which can rise or fall along the straightening light column.

7. The low noise tower pumping unit according to claim 6, characterized in that: The number of the straightening light columns is two, the distances between the straightening light columns and the reciprocating screw rod are the same, and the axes of the two straightening light columns and the reciprocating screw rod are arranged in an isosceles triangle.

8. The low noise tower pumping unit according to claim 1, characterized in that: The balance box and the sucker rod are connected via a transmission belt, and a driven roller is arranged in the middle of the transmission belt.

9. The low noise tower pumping unit according to claim 1, characterized in that: A translation driving mechanism is provided at the bottom of the frame, which can drive the entire tower pumping unit to translate.

10. The low noise tower pumping unit according to claim 1, characterized in that: Grease is added to the groove track of the reciprocating screw for lubrication.

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