Pumping unit with complete machine loads distributed oppositely

Abstract

The utility model discloses an oil pumping unit with oppositely distributed complete machine loads. The oil pumping unit comprises a base; a pumping unit main machine is arranged in the middle of the base and comprises a permanent magnet motor, a speed reducer, a rotator and a traction wheel. A well mouth end support is arranged at the position, on one side of the pumping unit main machine, of the end of the base, and a pair of symmetrically-arranged first guide wheels is arranged at the top of the well mouth end support. An oil well polish rod is arranged on the side, away from the pumping unit main machine, of the well mouth end support and connected with the traction wheel through two well mouth side flat belts penetrating through the first guide wheels respectively. A counterweight bracket is arranged at the end part of the base on the other side of the pumping unit host; a pair of symmetrically arranged second guide wheels is arranged at the top of the counterweight bracket; a balancing weight is arranged on the side, away from the pumping unit main machine, of the balance weight support, and the balancing weight is connected with the traction wheel through two balance weight side flat belts penetrating through the second guide wheels respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of oil production equipment, in particular to an oil pumping unit with opposed load distribution of the whole machine. Background Art

[0002] The function of an oil pump is to extract crude oil from deep underground to the surface. Its production and use has a long history, with a history of hundreds of years. The earliest and most widely used is the ordinary walking beam oil pump, which was born as early as 120 years ago. Over the past 100 years, the structure and principle of the walking beam oil pump have not changed substantially.

[0003] At present, there are mainly beam pumping units and vertical pumping units. The disadvantages of beam pumping units are that they are bulky, complex in structure, large in size, inconvenient to transport, install and maintain, low in efficiency and poor in safety. Although the vertical pumping unit has improved the pumping efficiency, its tower is high, large in size and weight, difficult and risky to install and maintain, the transmission parts are easy to wear, and the oil well needs to be shifted as a whole for maintenance, which is inconvenient to operate. Therefore, new pumping units (such as tower pumping units that use vertical balancing technology to improve efficiency) have been launched continuously to try to overcome these shortcomings, but these new pumping units have various shortcomings of their own and ultimately failed to be widely used. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned technical problems and to provide an oil pumping unit with opposed load distribution of the whole machine. It adopts a balanced structure, which greatly reduces the performance requirements of the oil pumping unit equipment on core components such as motors and reduction boxes, thereby reducing the material cost required for the whole machine.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: an oil pumping unit with opposed load distribution, comprising:

[0006] A base; a main pumping unit is arranged in the middle of the base, and the main pumping unit comprises a permanent magnet motor, a reducer, a rotator, and a traction wheel; the permanent magnet motor is fixedly mounted on the base, a reducer is arranged on the base on one side of the driving shaft of the permanent magnet motor, the driving shaft of the permanent magnet motor is connected to the input shaft of the reducer through the rotator, the reducer has two output ends, and the two output ends of the reducer are respectively provided with traction wheels;

[0007] A wellhead bracket is provided at the end of the base on one side of the main engine of the oil pumping unit, and a pair of symmetrically arranged first guide wheels are provided on the top of the wellhead bracket;

[0008] An oil well polished rod is provided on a side of the wellhead end bracket away from the main pumping unit, and the oil well polished rod is connected to the traction wheel through two wellhead side flat belts that respectively bypass the first guide wheel;

[0009] A counterweight bracket is provided at the end of the base on the other side of the main engine of the oil pump, and a pair of symmetrically arranged second guide wheels are provided on the top of the counterweight bracket;

[0010] A counterweight block is provided on the side of the counterweight bracket away from the main engine of the oil pump, and the counterweight block is connected to the traction wheel through two counterweight side flat belts which respectively pass around the second guide wheel.

[0011] A further preferred technical solution is that the counterweight bracket is located on a base on one side of the permanent magnet motor, and the wellhead end bracket is located on the base on one side of the reducer.

[0012] A further preferred technical solution is that the main pumping unit is installed in the middle of the wellhead end bracket and the counterweight bracket, and the wellhead end bracket and the counterweight bracket are symmetrically distributed with the main pumping unit as the central axis.

[0013] A further preferred technical solution is that both ends of the wellhead side flat belt and the counterweight side flat belt are provided with locks formed by crimping or casting, which can be used to connect the oil well polished rod, the counterweight block and the traction wheel.

[0014] A further preferred technical solution is that the counterweight block is composed of a plurality of steel pieces and / or concrete pieces.

[0015] A further preferred technical solution is that two layers of shock-absorbing frames are provided between the wellhead end bracket and the counterweight bracket above the main pumping unit, and both ends of each layer of shock-absorbing frames are respectively fixed to the wellhead end bracket and the counterweight bracket, and the flat belt follower roller installed on each layer of shock-absorbing frames presses on or supports the wellhead side flat belt and the counterweight side flat belt.

[0016] Compared with the prior art, the beneficial effects of the utility model are: 1. The whole machine has a simple structure, a low center of gravity, and simple configuration.

[0017] 2. The mechanical balancing mechanism based on the opposition principle greatly improves the balancing efficiency and greatly reduces the requirements for the drive motor.

[0018] 3. The up and down stroke of the polished rod is controlled by forward and reverse rotation. The polished rod movement mode can be designed as needed, and functions can be continuously upgraded or added online.

[0019] 4. The utility model has a simple and reliable structure, is easy to install, operate and maintain, and adopts a balanced structure, which greatly reduces the performance requirements of the core components of the oil pumping equipment such as the motor and the reduction box, thereby reducing the material cost required for the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the axonometric drawings of the utility model;

[0021] Figure 2This is the second axonometric drawing of the utility model;

[0022] Figure 3 This is the front view of the utility model;

[0023] In the figure: 1. base; 2. traction wheel; 3. wellhead end bracket; 4. lock; 5. wellhead side flat belt; 6. first guide wheel; 7. upper shock-absorbing frame; 8. flat belt follower roller; 9. counterweight side flat belt; 10. second guide wheel; 11. lower shock-absorbing frame; 12. reducer; 13. rotator; 14. permanent magnet motor; 15. counterweight bracket; 16. counterweight block. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Example

[0025] like Figure 1 and Figure 2 As shown, the present application provides an oil pumping unit with opposed load distribution of the whole unit, comprising a base 1, wherein the base 1 is a rectangular frame structure, which is composed of a plurality of steel sections connected;

[0026] A main pumping unit is provided in the middle of the base 1, and the main pumping unit includes a permanent magnet motor 14, a reducer 12, a rotator 13, and a traction wheel 2; the permanent magnet motor 14 is fixedly mounted on the base 1, and a reducer 12 is provided on the base 1 on one side of the driving shaft of the permanent magnet motor 14, and the driving shaft of the permanent magnet motor 14 is connected to the input shaft of the reducer 12 through the rotator 13, and the input shaft and output shaft of the reducer 12 are vertically distributed, belonging to a T-type reducer, and the reducer 12 has two output ends, and the two output ends of the reducer 12 are respectively provided with traction wheels 2;

[0027] A wellhead bracket 3 is provided at the end of the base 1 on one side of the main pumping unit. The wellhead bracket 3 is a frame structure, which is composed of a plurality of steel sections. The side of the wellhead bracket 3 close to and away from the main pumping unit is an inclined structure, and the other two sides are vertical structures. A ladder for climbing is provided on the inclined side of the wellhead bracket 3. The ladder is connected from the bottom of the wellhead bracket 3 to the top of the wellhead bracket 3. The staff can climb from the bottom of the wellhead bracket 3 to the top of the wellhead bracket 3 to perform operations;

[0028] A pair of symmetrically arranged first guide wheels 6 are provided on the top of the wellhead bracket 3, and the first guide wheels 6 are rotatably mounted on the top of the wellhead bracket 3 through a bearing seat;

[0029] An oil well polished rod is provided on the side of the wellhead end bracket 3 away from the main pumping unit, and the oil well polished rod is connected to one end of two wellhead side flat belts 5 through a lock 4, and the other end of each wellhead side flat belt 5 is connected to a traction wheel 2 on an output end of the reducer 12 by passing through the top of the first guide wheel 6 on the corresponding side of the top of the wellhead end bracket 3, and the traction wheel 2 is provided with a corresponding wheel groove corresponding to each wellhead side flat belt 5, and the wellhead side flat belt 5 is frictionally connected with the wheel groove of the first guide wheel 6; the end of the wellhead side flat belt 5 is connected to the traction wheel 3 through the lock 4;

[0030] A counterweight bracket 15 is provided at the end of the base 1 on the other side of the main body of the oil pumping unit. The counterweight bracket 15 is a rectangular frame structure, which is composed of a plurality of steel sections. A ladder for climbing is provided on one side of the counterweight bracket 15. Preferably, the ladder is located on any one of the three sides away from the main body of the oil pumping unit. The ladder is connected from the bottom of the counterweight bracket 15 to the top of the counterweight bracket 15. The staff can climb from the bottom of the counterweight bracket 15 to the top of the counterweight bracket 15 to perform operations.

[0031] A pair of symmetrically arranged second guide wheels 10 are provided on the top of the counterweight bracket 15, and the second guide wheels 10 are rotatably mounted on the top of the counterweight bracket 15 through a bearing seat;

[0032] In one embodiment, in order to reasonably arrange the structure of the pumping unit, the counterweight bracket 15 is located on the base 1 on one side of the permanent magnet motor 14, and the wellhead bracket 3 is located on the base 1 on one side of the reducer 12;

[0033] Preferably, the main pumping unit is installed between the wellhead bracket 3 and the counterweight bracket 15, and the wellhead bracket 3 and the counterweight bracket 15 are symmetrically distributed with the main pumping unit as the central axis;

[0034] A counterweight block 16 is provided on the side of the counterweight bracket 15 away from the main engine of the oil pump, and the counterweight block 16 is connected to one end of two counterweight side flat belts 9 through a lock 4, and the other end of each counterweight side flat belt 9 is passed through the top of the second guide wheel 10 on the corresponding side of the top of the counterweight bracket 15 and connected to the traction wheel 2 on one output end of the reducer 12, and the traction wheel 13 is provided with a corresponding wheel groove corresponding to each counterweight side flat belt 9, and the counterweight side flat belt 9 is frictionally connected with the wheel groove of the second guide wheel 10; the end of the counterweight side flat belt 9 is connected to the traction wheel 2 through a lock; in this way, the traction wheel 2 on the two output ends of the reducer 12 is provided with two side-by-side wheel grooves that respectively cooperate with the counterweight side flat belt 9 and the wellhead side flat belt 5; in order to ensure the stable operation of the counterweight block 16, the counterweight bracket 15 corresponding to the two ends of the lock 4 is provided with a guide groove, and the two ends of the lock 4 are inserted into the guide groove for sliding connection;

[0035] Preferably, both ends of the wellhead side flat belt 5 and the counterweight side flat belt 9 are provided with locks 4 fixed by means of crimping or casting, which can be used to connect the oil well polished rod, the counterweight block 16 and the traction wheel 2;

[0036] In one embodiment, the counterweight block 16 is centrally arranged in the frame of the counterweight bracket 15, and the counterweight bracket 15 forms a protective effect on the counterweight block to prevent the safety hazard caused by the counterweight block 16 being arranged outside the counterweight bracket;

[0037] Preferably, the counterweight block 16 can be made of cast steel or cast concrete. The counterweight block adopts a modular design and can be combined arbitrarily, so that the counterweight required for various working conditions can be matched according to actual needs.

[0038] like Figure 3 As shown, the wellhead side flat belt 5 is composed of two sets of parallel belt sets, distributed on both sides of the reducer 12, one end of which is connected to the traction wheel 2 of the main engine of the pumping unit, and the other end is connected to the oil well polished rod; the counterweight side flat belt 9 is composed of two sets of parallel belt sets, distributed on both sides of the reducer 12, one end of which is connected to the traction wheel 2 of the main engine of the pumping unit, and the other end is connected to the counterweight block 16;

[0039] During the operation of the main unit of the oil pump, the wellhead side flat belt 5 and the counterweight side flat belt 9 will vibrate. Therefore, an upper shock absorbing frame 7 and a lower shock absorbing frame 11 are provided between the wellhead end bracket 3 and the counterweight bracket 15 above the main unit of the oil pump. The ends of the upper shock absorbing frame 7 and the lower shock absorbing frame 11 are respectively fixed on the wellhead end bracket 5 and the counterweight bracket 9. The flat belt follower roller 8 installed on each layer of the shock absorbing frame presses on or supports the wellhead side flat belt 5 and the counterweight side flat belt 9 to eliminate the swaying generated by the flat belt during operation, so that the main unit of the oil pump can operate stably.

[0040] When the main pumping unit is running, the main pumping unit pulls the two wellhead side flat belts 5, and the oil well polished rod will be pulled by the two wellhead side flat belts 5. The wellhead end bracket 3 and the guide wheel module thereon guide and support the two wellhead side flat belts 5, so that the oil well polished rod reciprocates up and down, thereby pumping the oil at the bottom of the oil well out of the wellhead; at the same time, when the oil well polished rod moves downward, the main pumping unit will also pull the counterweight side flat belt 9, and the counterweight block 16 will be pulled by the counterweight side flat belt 9. The counterweight side bracket 15 and the guide wheel module thereon guide and support the counterweight side flat belt 9, so that the counterweight block 16 moves upward, collects the gravitational potential energy of the load during the downstroke of the polished rod, and uses it for the upstroke traction of the oil well polished rod;

[0041] The oil pumping unit adopts a double-belt parallel structure, which makes the transmission parts of the oil pumping unit less prone to wear and can improve the reliability and service life of the equipment; at the same time, the balanced structure is used to balance the load weight of the pumping rod; at the same time, the gravitational potential energy of the load during the downstroke of the rod is collected and used in the upstroke traction of the oil well rod, thereby further reducing the energy consumption of the oil pumping unit.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pumping unit with opposed load distribution, characterized in that: include: Base; A main pumping unit is provided in the middle of the base, and the main pumping unit includes a permanent magnet motor, a reducer, a rotator, and a traction wheel; the permanent magnet motor is fixedly mounted on the base, a reducer is provided on the base on one side of the driving shaft of the permanent magnet motor, the driving shaft of the permanent magnet motor is connected to the input shaft of the reducer through the rotator, the reducer has two output ends, and the two output ends of the reducer are respectively provided with traction wheels; A wellhead bracket is provided at the end of the base on one side of the main engine of the oil pumping unit, and a pair of symmetrically arranged first guide wheels are provided on the top of the wellhead bracket; An oil well polished rod is provided on a side of the wellhead end bracket away from the main pumping unit, and the oil well polished rod is connected to the traction wheel through two wellhead side flat belts that respectively bypass the first guide wheel; A counterweight bracket is provided at the end of the base on the other side of the main engine of the oil pump, and a pair of symmetrically arranged second guide wheels are provided on the top of the counterweight bracket; A counterweight block is provided on the side of the counterweight bracket away from the main engine of the oil pump, and the counterweight block is connected to the traction wheel through two counterweight side flat belts which respectively pass around the second guide wheel.

2. The oil pumping unit with opposed load distribution according to claim 1, characterized in that: The counterweight bracket is located on a base on one side of the permanent magnet motor, and the wellhead end bracket is located on the base on one side of the reducer.

3. The oil pumping unit with opposed load distribution according to claim 2, characterized in that: The main pumping unit is installed between the wellhead bracket and the counterweight bracket, and the wellhead bracket and the counterweight bracket are symmetrically distributed with the main pumping unit as the central axis.

4. The oil pumping unit with opposed load distribution according to claim 1, characterized in that: Both ends of the wellhead side flat belt and the counterweight side flat belt are provided with locks formed by crimping or casting, which can be used to connect the oil well polished rod, the counterweight block and the traction wheel.

5. The oil pumping unit with opposed load distribution according to claim 1, characterized in that: The counterweight block is composed of a plurality of steel pieces and / or concrete pieces.

6. The oil pumping unit with opposed load distribution according to claim 1, characterized in that: Two layers of shock-absorbing frames are arranged between the wellhead end bracket and the counterweight bracket above the main pumping unit, and the two ends of each layer of shock-absorbing frames are respectively fixed to the wellhead end bracket and the counterweight bracket, and the flat belt follower roller installed on each layer of shock-absorbing frames presses or supports the wellhead side flat belt and the counterweight side flat belt.

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