Beam pumping unit assembly and motor assembly

Abstract

A beam pumping unit assembly and its motor assembly. The motor assembly includes: a motor, including a main body and a first foot located on one lateral side of the lower part of the main body and a second foot located on the other lateral side, the first foot is provided with a first threaded hole and a second threaded hole, the second foot is provided with a third threaded hole, the first threaded hole and the second threaded hole are located at different positions in the front-to-back direction of the main body, and the second threaded hole and the third threaded hole are located at the same position in the front-to-back direction of the main body; a bottom plate, the bottom plate is used to connect with the reducer of the beam pumping unit, and is arranged below the first foot and the second foot, and is provided with a fourth threaded hole corresponding to the first threaded hole, a fifth threaded hole corresponding to the second threaded hole, and a sixth threaded hole corresponding to the third threaded hole. This staggered arrangement of the threaded holes ensures the fastening reliability between the bottom plate and the motor, making the motor more stable and reliable during operation.

Description

Technical Field

[0001] The present application relates to the technical field of electric motors, and in particular to a beam pumping unit assembly and a motor assembly thereof. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] The beam pumping unit is a widely used equipment in oil production, which has the characteristics of reliable structure, stable performance, convenient operation and maintenance, etc. The electric motor needs to be installed to the beam pumping unit to provide it with power. Utility Model Content

[0004] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0005] The present application provides a motor assembly of a beam pumping unit, comprising: a motor, comprising a main body and a first base foot located on one lateral side of the lower part of the main body and a second base foot located on the other lateral side, the first base foot being provided with a first threaded hole and a second threaded hole, the second base foot being provided with a third threaded hole, the first threaded hole and the second threaded hole being located at different positions in the front-to-back direction of the main body, and the second threaded hole and the third threaded hole being located at the same position in the front-to-back direction of the main body; a base plate, the base plate being used to be connected to a reducer of the beam pumping unit, and being arranged below the first base foot and the second base foot, and being provided with a fourth threaded hole corresponding to the first threaded hole, a fifth threaded hole corresponding to the second threaded hole, and a sixth threaded hole corresponding to the third threaded hole.

[0006] Furthermore, the main body is provided with a seventh threaded hole, the seventh threaded hole is located between the second threaded hole and the third threaded hole, and the bottom plate is provided with an eighth threaded hole corresponding to the seventh threaded hole.

[0007] Further, the seventh threaded hole and the third threaded hole have the same position in the front-rear direction of the main body.

[0008] Further, the first threaded hole and the fourth threaded hole are provided with a first connecting bolt, the second threaded hole and the fifth threaded hole are provided with a second connecting bolt, the third threaded hole and the sixth threaded hole are provided with a third connecting bolt, and / or the seventh threaded hole and the eighth threaded hole are provided with a fourth connecting bolt.

[0009] Furthermore, at least one of the first connecting bolt, the second connecting bolt, the third connecting bolt and the fourth connecting bolt is fastened with a double nut.

[0010] Furthermore, the second base foot is provided with a ninth threaded hole, and the bottom plate is provided with a tenth threaded hole corresponding to the ninth threaded hole.

[0011] Further, the third threaded hole and the sixth threaded hole are provided with a third connecting bolt, or the ninth threaded hole and the tenth threaded hole are provided with a fifth connecting bolt.

[0012] Furthermore, one of the third connecting bolt and the fifth connecting bolt has a screw head facing upward, and the other has a screw head facing downward.

[0013] Further, the ninth threaded hole and the third threaded hole have the same position in the front-rear direction of the main body.

[0014] The second aspect of the present application provides a walking beam pumping unit assembly, comprising: a walking beam pumping unit, including a pumping unit body and a reducer connected to the pumping unit body; the motor assembly provided by the first aspect of the present application, the base plate of the motor assembly is used to connect to the reducer.

[0015] The beam pumping unit assembly and the motor assembly thereof provided in the present application adopt a staggered arrangement of threaded holes, thereby ensuring the fastening reliability between the base plate and the motor, making the motor more stable and reliable during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other objects and advantages of the present application will be apparent from the following description of the present application with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present application.

[0017] Figure 1 is a front view of a motor assembly in the related art;

[0018] Figure 2 is a front view of the motor assembly in this embodiment;

[0019] Figure 3 is a side view of the motor assembly in this embodiment;

[0020] Figure 4 4 is a bottom view of the motor assembly in this embodiment.

[0021] Explanation of the accompanying drawings: 10. Motor assembly in the related art; 100. Motor in the related art; 200. Base plate in the related art; 300. Fastening bolt in the related art; 400. Fastening nut in the related art; 500. Front and rear adjustment plate in the related art; 600. Height adjustment bolt in the related art; 700. Adjustment gasket in the related art; 20. Motor assembly of the present embodiment; 810. Motor in the present embodiment; 811. First base foot in the present embodiment; 812. Second base foot in the present embodiment; 820. Base plate in the present embodiment; 830. Front and rear adjustment plate in the present embodiment; 840. Adjustment gasket in the present embodiment; 850. Height adjustment bolt in the present embodiment; 910. First connecting bolt in the present embodiment; 920. Second connecting bolt in the present embodiment; 930. Third connecting bolt in the present embodiment; 940. Fourth connecting bolt in the present embodiment; 950. Fifth connecting bolt in the present embodiment. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiment is one embodiment of the present application, not all embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] Unless otherwise defined, technical or scientific terms used in this application should have the common meanings understood by persons having ordinary skills in the field to which this application belongs.

[0024] The walking beam pumping unit is a kind of pumping equipment widely used in oil fields. The walking beam pumping unit is also called the beam pumping unit, the walking beam crank balanced pumping unit, and is commonly known as the "kowtow machine". It is one of the rod-type oil production equipment classified by the oil production method, and is mainly composed of a donkey head-walking beam-connecting rod-crank mechanism, a reducer, an electric motor (which can be an electric motor) and auxiliary equipment. The walking beam pumping unit has the advantages of reliable performance, simple structure, convenient operation and maintenance, and high safety. The working principle of the walking beam pumping unit is to supply power through the electric motor, and the high-speed rotation of the electric motor is converted into the low-speed rotation motion of the crank of the pumping unit through the reducer, and the rotation motion is converted into the reciprocating motion of the donkey head of the pumping unit by the crank-connecting rod-walking beam mechanism, and the deep well pump (oil pump) is driven to work through the sucker rod to pump oil out of the wellbore and send it to the surface manifold. Since the walking beam pumping unit itself is well known to those skilled in the art, it will not be repeated here.

[0025] Figure 1It is a front view of the motor assembly 10 in the related art (only part of the motor 100 is shown). The bottom plate 200 of the motor assembly 10 in the related art is welded to the support base of the reducer of the beam pumping unit, and the motor 100 is connected and fixed to the bottom plate 200 by fastening bolts 300.

[0026] The motor 100 can be a permanent magnet motor, which is a motor that uses permanent magnets to generate a magnetic field and converts electrical energy into mechanical energy. The rotor of the motor 100 is equipped with permanent magnets, which have strong magnetism and can generate a stable magnetic field. A coil is wound on the stator of the permanent magnet motor 100, and when the coil is energized, a magnetic field is generated on the stator. The magnetic field generated on the stator interacts with the magnetic field of the permanent magnet on the rotor to generate an electromagnetic force to rotate the rotor. By continuously changing the direction of the coil current, the rotor can be made to rotate continuously, realizing the conversion of electrical energy into mechanical energy. Since the permanent magnet motor 100 itself is well known to those skilled in the art, it will not be repeated here.

[0027] like Figure 1 As shown, the fixing method of the foot of the motor 100 and the base plate 200 in the related art is to use the traditional two fastening bolts 300 and the upper fastening nut 400 and spring washer fastening method. The height of the motor 100 is fine-tuned by inserting the adjustment gasket 700 between the foot of the motor 100 and the base plate 200. There is a front and rear adjustment plate 500 for front and rear adjustment on the base plate 200. Each front and rear adjustment plate 500 has 3 bolts, the lower two are fixed on the base plate 200, and the upper bolts are used to adjust the front and rear position of the motor 100. The above method can adjust the height and front and rear position of the motor 100. This solution can be used for some reducers (with complete bottom surface), but some reducers have incomplete bottom surfaces, which makes it inconvenient to install the fastening bolts 300 from the bottom to the top or the fastening bolts 300 cannot be installed at all. Therefore, there is an urgent need for a quick and simple bolt fastening solution that cannot be limited to installing the fastening bolts 300 from the bottom to the top and then locking them with the double nuts on the top.

[0028] It is understandable that the above-mentioned two fastening bolts 300 and the upper fastening nut 400 and spring washer fastening method are prone to looseness and instability when the motor 100 vibrates greatly. The installation space is limited, and maintenance and adjustment work are difficult. In addition, the two fastening bolts 300 of the base plate 200 and the upper fastening nut 400 and spring washer fastening method have two fastening bolts 300 in a straight line, which is not stable and easily leads to failures and has a short service life. In addition, this method is not very applicable, and many reducers with irregular feet cannot use this method.

[0029] This embodiment first provides a motor assembly 20 of a beam pumping unit. Figure 2is a front view of the motor assembly 20 in this embodiment (only a portion of the motor 810 is shown); Figure 3 is a side view of the motor assembly 20 in this embodiment (only a portion of the motor 810 is shown); Figure 4 It is a bottom view of the motor assembly 20 in this embodiment (only a portion of the motor 810 is shown, and the fastening bolts are hidden).

[0030] The motor assembly 20 includes: a motor 810, including a main body and a first base foot 811 located on one lateral side of the lower part of the main body and a second base foot 812 on the other lateral side, the first base foot 811 is provided with a first threaded hole and a second threaded hole, the second base foot 812 is provided with a third threaded hole, the first threaded hole and the second threaded hole are at different positions in the front-to-back direction of the main body, and the second threaded hole and the third threaded hole are at the same position in the front-to-back direction of the main body; a base plate 820, the base plate 820 is used to be connected to the reducer of the walking beam pumping unit, and is arranged below the first base foot 811 and the second base foot 812, and is provided with a fourth threaded hole corresponding to the first threaded hole, a fifth threaded hole corresponding to the second threaded hole, and a sixth threaded hole corresponding to the third threaded hole.

[0031] The main body of the motor can be the part of the motor without the first foot 811 and the second foot 812, for example, including a rotor, a stator and a housing, etc. It can be understood that the extension direction of the output shaft of the motor can be its front-to-back direction, and the direction perpendicular to the front-to-back direction is its lateral direction.

[0032] The structure of threaded connection is relatively simple, easy to manufacture and install. During the connection process, due to the close fit of the threads, it can provide a stable and reliable connection effect. Threaded connection is a detachable connection method that can be easily disassembled and reassembled as needed.

[0033] It can be understood that the corresponding threaded holes can be connected to fastening bolts to achieve fixed connection between the motor 810 and the base plate 820. This beam pumping unit assembly and its motor assembly 20 adopt a staggered arrangement of threaded holes to ensure the fastening reliability between the base plate 820 and the motor 810, making the motor 810 more stable and reliable during operation.

[0034] In some embodiments, the main body is provided with a seventh threaded hole, the seventh threaded hole is located between the second threaded hole and the third threaded hole, and the bottom plate 820 is provided with an eighth threaded hole corresponding to the seventh threaded hole. It can be understood that the corresponding threaded holes can be connected with fastening bolts, wherein the seventh threaded hole can be provided in the shell of the main body, thereby improving the connection stability between the bottom plate 820 and the motor 810.

[0035] In some embodiments, the seventh threaded hole and the third threaded hole are located at the same position in the front-to-rear direction of the main body.

[0036] In some embodiments, the first threaded hole and the fourth threaded hole are provided with a first connecting bolt 910, the second threaded hole and the fifth threaded hole are provided with a second connecting bolt 920, the third threaded hole and the sixth threaded hole are provided with a third connecting bolt 930, and / or the seventh threaded hole and the eighth threaded hole are provided with a fourth connecting bolt 940. Thus, the user does not need to perform the bolt installation operation, thereby improving the user's use experience.

[0037] Among them, at least one of the first connecting bolt 910, the second connecting bolt 920, the third connecting bolt 930 and the fourth connecting bolt 940 is fastened with a double nut. Thus, it is safer and more reliable. For example, the first connecting bolt 910, the second connecting bolt 920, and the third connecting bolt 930 can be fastened with a double nut, and the fourth connecting bolt 940 can be fastened without a double nut.

[0038] The double nut is fixed by two nuts. This structure can provide better fixation and ensure that the connection is not easy to loosen. Through the mutual adjustment of the two nuts, the shell pressure balance of the connection can be achieved, which can meet the problems caused by processing and manufacturing errors and further ensure the stability of the connection. Double nut tightening can effectively increase the friction torque of the system, making the connection more tight and improving the reliability of the connection. Especially in a vibration environment, the use of double nuts can better resist external impact and reduce the risk of loosening. The double nut connection method can evenly distribute the load along the axial direction of the thread, reduce the load concentration on a single nut, and reduce the risk of plastic deformation. By tightening multiple nuts, the bearing force is dispersed to each nut, which can greatly improve the static load bearing capacity of the bolt connection. The double nut connection method effectively reduces the risk of loosening, especially under long-term working conditions, it can ensure that the connection will not loosen or the nut will not be damaged. The double nut structure makes it easier to disassemble and replace the connection, saving time and cost. The double nut connection method is suitable for connections with large static loads or large dynamic load impacts, and special working conditions where humps are not allowed on the surface of the connection. At the same time, it is also suitable for the connection requirements of connectors under special working conditions such as high temperature, low temperature, high vibration, and high environmental corrosion.

[0039] In some embodiments, the second foot 812 is provided with a ninth threaded hole, and the bottom plate 820 is provided with a tenth threaded hole corresponding to the ninth threaded hole. It can be understood that the corresponding threaded holes can be connected with fastening bolts.

[0040] In some embodiments, the third threaded hole and the sixth threaded hole are provided with a third connecting bolt 930 , or the ninth threaded hole and the tenth threaded hole are provided with a fifth connecting bolt 950 . That is, the user can choose to use the third connecting bolt 930 or the fifth connecting bolt 950 .

[0041] In some embodiments, one of the third connecting bolt 930 and the fifth connecting bolt 950 has its screw head facing upwards, while the other has its screw head facing downwards, thereby avoiding the situation where the installation is abandoned when the bolt cannot be inserted upwards, and fully adapting to the installation and use of various types of reducers.

[0042] In some embodiments, the ninth threaded hole and the third threaded hole are located at the same position in the front-to-rear direction of the main body.

[0043] The present application also provides a walking beam pumping unit assembly, comprising: a walking beam pumping unit, comprising a pumping unit body and a reducer connected to the pumping unit body; an electric motor assembly 20 provided in any of the above embodiments, wherein the base plate 820 of the electric motor assembly 20 is used to connect to the reducer.

[0044] This embodiment adds two bolts for fastening and staggers the bolts longitudinally, and adopts an upper double nut fastening method, which better combines the motor 810 with the bottom plate 820 (the bottom plate 820 is welded to the base of the reducer of the beam pumping unit by welding), thereby solving the shortcomings of the fastening between the bottom foot and the bottom plate 820 in the above-mentioned related art.

[0045] The motor assembly 20 and the beam pumping unit assembly of this embodiment are composed of four fastening bolts, eight fastening nuts (double nut fastening), a base plate 820, a front and rear adjustment plate 830 for front and rear adjustment, etc., and the working mode thereof fully ensures the fastening reliability between the base plate 820 and the motor 810 through the improved double nut locking and the method of longitudinally staggering the bolt positions. The motor assembly 20 and the beam pumping unit assembly of this embodiment may also include an adjustment gasket 840 and a height adjustment bolt 850 for adjusting the height of the motor 810. The specific contents of the front and rear adjustment plate 830, the adjustment gasket 840 and the height adjustment bolt 850 may refer to the above text.

[0046] The original installation dimensions and adjustment scheme of the original scheme are retained, and the uncertainty of the installation site is fully considered, and the uncertainty of various reducers at the user's installation site is completely integrated. This saves the user's on-site surveying and mapping before the motor 810 is installed, and the motor factory's early design and planning preparation, scheme determination, and customer confirmation and other round-trip communication time. The user's selection and installation time is improved. This embodiment has been tested and simulated, and has been proven to be reliable and feasible.

[0047] The motor 810 is mounted on a base plate 820 (the base plate 820 is welded to the reducer base of the oil pump), wherein the two outer bolts are longitudinally staggered (increasing the swing torque generated when the motor 810 swings), making the motor 810 more stable and reliable during operation.

[0048] The double nut locking method is safer and more reliable than the single nut and spring washer locking method.

[0049] The two fastening methods of the inner bolts of the motor 810 provide users with greater choice (it can be fastened upward with double nuts, or, if site conditions do not allow upward bolting, the motor can be fastened by moving one hole outward and tightening downward). This avoids the situation of giving up installation when it is not possible to tighten bolts upward, and is fully adaptable to the installation and use of various types of reducers.

[0050] The motor assembly 20 and the beam pumping unit assembly of this embodiment retain the original installation dimensions and adjustment forms in the related art and avoid the problem in the related art that the motor 810 cannot be replaced due to damage during operation, thereby better combining the two forms.

[0051] The present application is not limited to use on oil pumping units, and this fixing method can be used in other fields.

[0052] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0053] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A motor assembly of a beam pumping unit assembly, characterized in that: include: The motor comprises a main body, a first foot located at one lateral side of the lower part of the main body, and a second foot located at the other lateral side, the first foot being provided with a first threaded hole and a second threaded hole, the second foot being provided with a third threaded hole, the first threaded hole and the second threaded hole being located at different positions in the front-to-back direction of the main body, and the second threaded hole and the third threaded hole being located at the same position in the front-to-back direction of the main body; A base plate, the base plate is used to connect to the reducer of the walking beam pump, and is arranged below the first base foot and the second base foot, and is provided with a fourth threaded hole corresponding to the first threaded hole, a fifth threaded hole corresponding to the second threaded hole, and a sixth threaded hole corresponding to the third threaded hole.

2. The motor assembly according to claim 1, characterized in that The main body is provided with a seventh threaded hole, and the seventh threaded hole is located between the second threaded hole and the third threaded hole. The bottom plate is provided with an eighth threaded hole corresponding to the seventh threaded hole.

3. The motor assembly according to claim 2, characterized in that The seventh threaded hole and the third threaded hole are located at the same position in the front-rear direction of the main body.

4. The motor assembly according to claim 2, characterized in that The first threaded hole and the fourth threaded hole are provided with a first connecting bolt, the second threaded hole and the fifth threaded hole are provided with a second connecting bolt, the third threaded hole and the sixth threaded hole are provided with a third connecting bolt, and / or the seventh threaded hole and the eighth threaded hole are provided with a fourth connecting bolt.

5. The motor assembly according to claim 4, characterized in that At least one of the first connecting bolt, the second connecting bolt, the third connecting bolt and the fourth connecting bolt is fastened with a double nut.

6. The motor assembly according to claim 1, characterized in that The second base is provided with a ninth threaded hole, and the bottom plate is provided with a tenth threaded hole corresponding to the ninth threaded hole.

7. The motor assembly according to claim 6, characterized in that The third threaded hole and the sixth threaded hole are provided with a third connecting bolt, or the ninth threaded hole and the tenth threaded hole are provided with a fifth connecting bolt.

8. The motor assembly according to claim 7, characterized in that One of the third connecting bolt and the fifth connecting bolt has a screw head facing upward, and the other has a screw head facing downward.

9. The motor assembly according to claim 6, characterized in that The ninth threaded hole and the third threaded hole are located at the same position in the front-rear direction of the main body.

10. A beam pumping unit assembly, characterized in that: include: A beam pumping unit, comprising a pumping unit body and a reducer connected to the pumping unit body; According to any one of claims 1 to 9, the base plate of the motor assembly is used to be connected to the reducer.

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