Novel thrust structure of high-power submersible motor

Abstract

The utility model relates to a novel thrust structure of a high-power submersible motor, and belongs to the technical field of motors. Comprising a base shell and a lower guide bearing seat, a thrust block movable bracket is fixedly arranged on the inner wall of the base shell; a footing seat is arranged at one end of the base shell, and the thrust seat movable support and the footing seat are connected and fixed through a stud; a supporting column screw is installed on the thrust seat movable support, a bearing seat is supported and installed through the supporting column screw, and a thrust bearing is installed on the bearing seat; a pressure regulating film is mounted on the bottom foot seat; and the base shell and the lower guide bearing seat are integrally connected. According to the novel thrust structure designed by the utility model, a large-size thrust bearing capable of bearing larger load can be mounted, a heavy and expensive loader does not need to be used, the light weight of the motor is realized, and meanwhile, the pump using cost of a user is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a novel high -power submersible motor thrust structure belongs to motor technical field. BACKGROUND

[0002] At present, the motor base and lower guide bearing seat of submersible asynchronous motor (GB / T2818-2014) and small submersible pump (GB / T25409-2010) are usually fixed by double -end screw and motor lower end ring screw hole tightening, and the double -end screw occupies the radial space inside the base, so that the size of the thrust bearing is greatly limited.

[0003] The high -power motor such as 150-55kw, 150-63kw motor and 125QJ, 135QJ, 175QJ, 200QJ, 250QJ, 300QJ series high -power submersible motor needs to install the carrier on the base, but the size is big and heavy after installing the carrier on the motor, and the cost is high.

[0004] The internal structure of the traditional submersible motor base is fixed by double -end screw and motor lower end ring screw hole tightening, as shown in Figure 3 Because the double -end screw occupies the radial space inside the base, the size of the thrust bearing is greatly limited. In the figure, taking 150 type motor as an example, the internal structure of the traditional base occupies a part of radial space due to double -end screw, and the distance between the two screw rods is only 107mm, so the maximum can only use Φ100 thrust bearing. TECHNICAL SOLUTION

[0005] The utility model discloses a novel high -power submersible motor thrust structure, to solve the above technical problem.

[0006] In order to realize the above purpose, the utility model adopts the technical scheme that:

[0007] A novel high -power submersible motor thrust structure, including base shell and lower guide bearing seat, the inner wall of base shell is fixedly installed thrust seat movable support, the one end of base shell is provided with bottom foot seat, and the double -end bolt connection is fixed between thrust seat movable support and bottom foot seat, installs the column screw on thrust seat movable support, and the bearing seat is supported and installed through column screw, and installs the thrust bearing on bearing seat, installs the pressure -regulating film on bottom foot seat, and the base shell and lower guide bearing seat are integrally connected, and the thrust seat movable support and bearing seat are still connected and set up thrust seat anti -rotation screw rod.

[0008] The utility model technical scheme further improves that the base shell and lower guide bearing seat use welding connection.

[0009] The further improvement of the utility model technical scheme is that the base shell and the lower guide bearing seat are connected by laser welding.

[0010] The further improvement of the utility model technical scheme is that the base shell and the lower guide bearing seat are integrally casted.

[0011] The further improvement of the utility model technical scheme is that the spring retaining groove is arranged on the inner wall of the base shell and the snap spring is installed, and the snap spring is used to fixedly install the thrust block movable support.

[0012] The further improvement of the utility model technical scheme is that the internal thread is arranged on the inner wall of the base shell, and the external thread is arranged on the outer portion of the thrust block movable support; the thrust block movable support is installed on the inner wall of the base shell through the threaded connection.

[0013] Due to the adoption of the above technical scheme, the utility model has the following technical effects:

[0014] The new thrust structure designed by the utility model can install large-size thrust bearing capable of bearing larger load, and does not need to use heavy and expensive carrier, thereby realizing the light weight of the motor and greatly reducing the pump cost of the user.

[0015] The base of the new design structure has 133mm radial space for installing the thrust bearing, and the 150-type motor can also install Φ120 and Φ125 thrust bearings. Therefore, the 150-type motor using the new design can be directly connected with the pump body for use without installing the carrier even if the power is as large as 55kw and 63kw. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic view of the thrust structure of the utility model Figure 1 ;

[0017] Figure 2 is a schematic view of the thrust structure of the utility model Figure 2 ;

[0018] Figure 3 is a schematic view of the traditional thrust structure;

[0019] Among them, 1, base shell, 2, lower guide bearing seat, 3, thrust block movable support, 4, foot base, 5, double-headed bolt, 6, support screw, 7, bearing seat, 8, thrust bearing, 9, pressure regulating film, 10, snap spring, 11, thrust block anti-rotation screw. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described in combination with the specific implementation mode.

[0021] In the description of the utility model, it needs to explain that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the position or location relationship based on the position or location relationship shown in the drawing, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0022] The utility model relates to a novel high -power submersible motor thrust structure, which is applied to a submersible motor.

[0023] As shown in Figure 1 , Figure 2 , the structure includes base shell 1 and lower guide bearing seat 2. In the interior of base shell 1, thrust seat movable support 3 is fixedly installed. One end of base shell 1 is open and is provided with foot seat 4. The foot seat 4 is fixedly connected with base shell 1 by bolts. And pressure regulating film 9 is installed on foot seat 4. Base shell 1 is made of stainless steel.

[0024] Thrust seat movable support 3 and foot seat 4 are connected and fixed by stud bolt 5. The two ends of stud bolt 5 are provided with threaded sections, and the two ends of stud bolt 5 are respectively threadedly connected with thrust seat movable support 3 and foot seat 4. Thrust seat movable support 3 is supported by stud bolt 5. Further, thrust seat anti-rotation screw rod 11 is further connected between thrust seat movable support 3 and bearing seat 7, the two ends of thrust seat anti-rotation screw rod 11 are respectively connected with thrust seat movable support 3 and bearing seat 7, and thrust seat anti-rotation screw rod 11 is provided with a plurality of thrust seat anti-rotation screw rods 11, which prevent the rotation of the thrust seat.

[0025] Supporting column screw 6 is further installed on thrust seat movable support 3, and bearing seat 7 is supported and installed by supporting column screw 6. Supporting column screw 6 and a plurality of thrust seat anti-rotation screw rods 11 jointly support bearing seat 7.

[0026] Thrust bearing 8 is installed on bearing seat 7, and thrust bearing 8 is connected with the main shaft of the motor.

[0027] In the technical scheme, base shell 1 and lower guide bearing seat 2 are connected in an integrated manner. Specifically, there are two ways. One is that base shell 1 and lower guide bearing seat 2 are connected by welding, for example, connected by laser welding. The second is that base shell 1 and lower guide bearing seat 2 are integrally cast into a structure.

[0028] The thrust seat movable support 3 is fixed in the base shell 1. Specifically, there are two ways. One is to set a snap spring groove on the inner wall of the base shell 1, then install a snap spring 10, and use the snap spring 10 to fix and install the thrust seat movable support 3. The second is to set an internal thread on the inner wall of the base shell 1, and at the same time, set an external thread on the outer part of the thrust seat movable support 3. The thrust seat movable support 3 is installed on the inner wall of the base shell 1 through threaded connection.

[0029] The base of the novel design structure has a radial space of 133mm inside which can be used to install a thrust bearing, and a Φ120, Φ125 thrust bearing can also be installed for a 150 type motor. Therefore, the 150 type motor using the novel design can be directly connected to the pump body for use without the need to install a carrier even for high power such as 55kw, 63kw.

[0030] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A new type of thrust structure for high-power submersible motor, characterized in that: It comprises a base shell (1) and a lower guide bearing seat (2); a thrust seat movable support is fixedly installed in the base shell (1); a bottom foot seat (4) is arranged at one end of the base shell (1), and a double-end bolt (5) is used to connect and fix between the thrust seat movable support (3) and the bottom foot seat (4); a support screw (6) is installed on the thrust seat movable support (3), and a bearing seat (7) is supported and installed through the support screw (6), and a thrust bearing (8) is installed on the bearing seat (7); a pressure regulating diaphragm (9) is installed on the bottom foot seat (4); the base shell (1) and the lower guide bearing seat (2) are integrally connected; a thrust seat anti-rotation screw rod (11) is further arranged and connected between the thrust seat movable support (3) and the bearing seat (7).

2. A new type of thrust structure of a high-power submersible motor according to claim 1, characterized in that: The base shell (1) and the lower guide bearing seat (2) are connected by welding.

3. A new type of thrust structure of a high-power submersible motor according to claim 2, characterized in that: The base shell (1) and the lower guide bearing seat (2) are connected by laser welding.

4. A new type of thrust structure of a high-power submersible motor according to claim 2, characterized in that: The base shell (1) and the lower guide bearing seat (2) are integrally cast.

5. A new type of thrust structure of a high-power submersible motor according to claim 1, characterized in that: A clamping spring slot is arranged on the inner wall of the base shell (1), and a clamping spring (10) is installed, and the clamping spring (10) is used to fixedly install the thrust seat movable support (3).

6. A new type of thrust structure of a high-power submersible motor according to claim 1, characterized in that: An inner thread is arranged on the inner wall of the base shell (1), and an outer thread is arranged on the outer portion of the thrust seat movable support (3); the thrust seat movable support (3) is installed on the inner wall of the base shell (1) through threaded connection.

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