Permanent magnet direct-driven slurry pump

Abstract

The utility model discloses a permanent magnet direct drive mud pump, which relates to the technical field of mud pumps and comprises a permanent magnet synchronous motor and a mud pump, a power output shaft of the permanent magnet synchronous motor is connected with a transmission shaft of the mud pump, and the transmission shaft of the mud pump is driven by the permanent magnet synchronous motor to rotate; according to the permanent magnet direct-driven slurry pump, the slurry pump is directly driven by the permanent magnet synchronous motor, the power output shaft of the motor and the transmission shaft of the slurry pump synchronously rotate, large torque and large thrust can be provided, the motor efficiency is high, energy consumption is low, and the rotating speed is easier to control through a direct connection structure.

Description

Technical Field

[0001] This utility model relates to the field of mud pump technology, and in particular to a permanent magnet direct drive mud pump. Background Technology

[0002] Mud pumps are essential and critical equipment in oil drilling, and most are three-cylinder single-acting reciprocating piston pumps. The driving method of mud pumps varies depending on the type of drilling rig, and is divided into mechanical drive and electric motor drive. Electric motor-driven mud pumps typically use an asynchronous motor with a reduction gear to drive the pump shaft. This drive method is mature and reliable, but it is essentially a two-stage transmission. The low-speed torque of the motor is insufficient to drive the pump; the motor must provide high speed before being transferred to the pump through the reduction gear to ensure sufficient torque. This results in low transmission efficiency and complicated installation and maintenance. Utility Model Content

[0003] The purpose of this invention is to provide a permanent magnet direct-drive mud pump to solve the problems existing in the prior art, and it has the advantages of high transmission efficiency, simple structure and easy maintenance.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides a permanent magnet direct drive mud pump, including a permanent magnet synchronous motor and a mud pump. The power output shaft of the permanent magnet synchronous motor is connected to the drive shaft of the mud pump, and the drive shaft of the mud pump is driven to rotate by the permanent magnet synchronous motor.

[0006] Preferably, the power output shaft of the permanent magnet synchronous motor is connected to the drive shaft of the mud pump via a coupling.

[0007] Preferably, the permanent magnet synchronous motor is supported by a motor base.

[0008] Preferably, the mud pump is supported by a pump base.

[0009] The present invention achieves the following technical advantages over the prior art:

[0010] The permanent magnet direct-drive mud pump of this utility model is directly driven by a permanent magnet synchronous motor. The power output shaft of the motor and the transmission shaft of the mud pump rotate synchronously, which can provide large torque and large thrust. The motor has high efficiency and low energy consumption, and the direct-drive structure makes it easier to control the speed.

[0011] Furthermore, the intermediate structure is eliminated, the motor and pump are directly connected, and the overall structure is simple and easy to maintain. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the permanent magnet direct-drive mud pump in this utility model;

[0014] In the diagram: 1. Permanent magnet synchronous motor; 2. Mud pump; 3. Coupling; 4. Motor base; 5. Pump base. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] The purpose of this invention is to provide a permanent magnet direct-drive mud pump to solve the problems existing in the prior art.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] The permanent magnet direct-drive mud pump in this embodiment, such as Figure 1 As shown, it includes a permanent magnet synchronous motor 1 and a mud pump 2. The power output shaft of the permanent magnet synchronous motor 1 is connected to the drive shaft of the mud pump 2, and the drive shaft of the mud pump 2 is driven to rotate by the permanent magnet synchronous motor 1.

[0019] In this specific embodiment, the power output shaft of the permanent magnet synchronous motor 1 is connected to the drive shaft of the mud pump 2 via a coupling 3. The permanent magnet synchronous motor 1 is supported by a motor base 4, and the mud pump 2 is supported by a pump base 5.

[0020] In this invention, the permanent magnet synchronous motor 1 directly drives the mud pump 2. The power output shaft of the permanent magnet synchronous motor 1 and the transmission shaft of the mud pump 2 rotate synchronously, which can provide large torque and large thrust. The motor has high efficiency and low energy consumption, and the direct connection structure makes it easier to control the speed.

[0021] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A permanent magnet direct drive mud pump characterized by: The mud pump is driven by a power output shaft of a permanent magnet synchronous motor, and the power output shaft of the permanent magnet synchronous motor is connected with a transmission shaft of the mud pump through a coupling. The permanent magnet synchronous motor is supported by a motor base, and the mud pump is supported by a pump base.

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