CN214742135U

CN214742135U - Dry stator wet rotor submersible full tubular pump

Info

Publication number: CN214742135U
Application number: CN202023039556.1U
Authority: CN
Inventors: 徐凯; 俞宗安; 俞凤
Original assignee: Hefei Science Asia Motor & Pumps Technology Co ltd
Current assignee: Hefei Science Asia Motor & Pumps Technology Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-11-16
Anticipated expiration: 2030-12-15

Abstract

The invention belongs to the field of dry submersible electric pumps, and discloses a dry stator and wet rotor submersible full tubular pump which comprises an outer shell, a motor stator body, a motor rotor body, an impeller, a water suction chamber and a water outlet chamber, wherein the water suction chamber and the water outlet chamber are connected with the outer shell; the motor stator body is sealed in a water-tight manner through a dry winding structure device; the motor rotor body is arranged on the motor stator body, is positioned on the outer side of the dry winding structure device and is positioned in the water flow channel; when the electric pump operates, heat generated by rotation of a motor rotor body can be taken away along with flowing water on the periphery of the rotor, and heat generated by the motor stator body after being electrified can be taken away through contact of heat dissipation ribs welded on the outer wall of the outer shell and the outer wall and the flowing water, so that the fault that the stator and the rotor are mutually rubbed due to poor heat dissipation conditions of the motor stator body is greatly reduced.

Description

Dry stator wet rotor submersible full tubular pump

Technical Field

The disclosure belongs to the field of dry submersible electric pumps, and particularly relates to a dry stator and wet rotor submersible full tubular pump.

Background

At present, dry submersible electric pumps are generally qz (h) -type submersible axial (mixed) flow electric pumps and ZLB-type conventional axial flow pumps. These types of dry submersible electric pumps are generally large and complex in structure, and generally need to be designed into large pump pit civil engineering structures to meet the use requirements. Not only increases the cost in economic aspect, but also increases the investment of human resources, and needs professional personnel to operate each time of installation and disassembly. The wet submersible electric pumps are generally QJ-type well submersible electric pumps, QS-type water-filled electric pumps and QKSG-type mining submersible electric pumps. These types of wet submersible electric pumps are generally sealed with a certain amount of water in the cavity of the motor, and the electric pumps are cooled by the water in the cavity of the motor and the ambient water on the outer surface of the housing when in operation.

The stator of QZ (H) type submersible shaft (mixed) flow electric pump is dry structure, the rotor is squirrel-cage structure, and the working water flow is circulated on the outer wall of stator casing. The rotor is arranged in the dry-type submersible motor, when the motor works, heat is dissipated only by heat conduction of the outer wall of the stator, so that the heat dissipation effect is poor, and the fault mode that the stator and the rotor are mutually wiped can be caused when heat in a motor cavity is not timely and effectively dissipated after the motor runs for a long time;

meanwhile, the impeller of the electric pump with the structure is arranged below the guide vane body, the impeller and the shaft are connected through a key, and the pump has a large water thrust acting on the impeller during starting and running and further transferred to the rotor, so that the requirement on a bearing arranged on the electric pump is high.

SUMMERY OF THE UTILITY MODEL

The purpose of this disclosure is to provide a dry stator wet rotor submersible full tubular pump.

The purpose of the disclosure can be realized by the following technical scheme:

the dry stator wet rotor submersible full tubular pump comprises an outer shell, a motor stator body, a motor rotor body, an impeller, a water suction chamber and a water outlet chamber, wherein the water suction chamber and the water outlet chamber are connected with the outer shell; the motor stator body is sealed in a water-tight manner through a dry winding structure device;

the motor rotor body is arranged on the motor stator body, is positioned on the outer side of the dry winding structure device and is positioned in the water flow channel.

Furthermore, a mandrel of the motor rotor body is sleeved with a rolling bearing, the mandrel of the motor rotor body is installed on the inner wall of a hub of the impeller through the rolling bearing, two ends of the hub of the impeller are sealed with end covers to form a rolling bearing cavity, and blades of the impeller are uniformly distributed on the outer circle of the hub of the impeller.

Furthermore, the blade excircle of the impeller is fixed on the inner wall of the iron core of the motor rotor body.

Furthermore, the outer shell, the motor stator body, the motor rotor body and the impeller are coaxially arranged.

Furthermore, the front end of a mandrel of the motor rotor body is fixedly connected to the water suction chamber, and the rear end of the mandrel is fixedly connected to the guide vane body.

Further, the water flow channel is a straight channel, and the impeller is positioned in the water flow channel.

The beneficial effect of this disclosure:

this openly can be effectual dispel the heat to motor rotor body and motor stator body.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

Fig. 1 is an overall structural schematic diagram of an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

As shown in fig. 1, the dry stator wet rotor submersible full tubular pump comprises an outer shell 1, a motor stator body 2, a motor rotor body 3, an impeller, a water suction chamber 100 connected with the outer shell 1 and a water outlet chamber 101, wherein a water flow channel is formed between the water suction chamber 100 and the water outlet chamber 101;

the outer shell 1, the motor stator body 2, the motor rotor body 3 and the impeller are coaxially arranged, and the motor stator body 2 is sealed in a water-tight manner through the dry winding structure device 4;

the motor rotor body 3 is arranged on the motor stator body 2, is positioned on the outer side of the dry winding structure device 4 and is positioned in the water flow channel;

the core shaft of the motor rotor body 3 is sleeved with a rolling bearing, the core shaft of the motor rotor body 3 is installed on the inner wall of the hub of the impeller through the rolling bearing, the two ends of the hub of the impeller are sealed with end covers to form a rolling bearing cavity, and blades of the impeller are uniformly distributed on the outer circle of the hub of the impeller.

The blade excircle of impeller is fixed on the iron core inner wall of motor rotor body 3, produces the magnetic field after motor stator body 2 circular telegram, and motor rotor body 3 receives the magnetic field induction when rotatory, and the blade of impeller is rotatory along with roller bearing excircle, and the dabber front end of motor rotor body 3 is connected and is absorbed water chamber 100 and the rear end is connected in guide vane body 5, all is fixed motionless, so the dabber of motor rotor body 3 does not transmit the moment of torsion.

The motor rotor body 3 directly transmits the torque to the impeller, the structure is compact, the spindle of the motor rotor body 3 only plays a role in supporting and stabilizing the motor rotor body 3, the torque is not transmitted, the diameters of the spindle of the motor rotor body 3 and the hub of the impeller are greatly reduced, and the reduction of the hub directly reduces the streaming loss; meanwhile, the structure is compact, so that the occupied area is greatly reduced.

In some implementations, the dry winding structure device 4 may be: a stator movable groove which is sealed relatively with the outside is formed in the outer shell 1, and the motor stator body 2 is positioned in the stator movable groove, so that the electronic stator body 2 is sealed; in some implementations, the dry winding structure device 4 may be: the sealing gasket is arranged on the outer side of the motor stator body 2 and wraps the motor stator body 2, so that the electronic stator body 2 is sealed; of course, in other embodiments, other approaches are possible.

In this embodiment, the water flow passage is provided as a straight passage or a substantially straight passage, and the impeller is located in the water flow passage; since the water flow passage is of a straight type, the medium flow line is an approximately straight line from the inlet to the outlet, and the path is short, the efficiency is relatively high.

When the submersible electric pump is used, when the motor rotor body 3 works, water flow is sucked from the water suction chamber 100, is pressurized by the impeller and then is discharged along the guide vane body 5, and thus the running system of the whole submersible electric pump is formed; when the electric pump operates, heat generated by rotation of the motor rotor body 3 can be taken away along with flowing water on the periphery of the rotor, and heat generated by the motor stator body 2 after being electrified can be taken away through contact of the outer wall of the outer shell 1 and the heat dissipation ribs welded on the outer wall and the flowing water, so that the fault that the stator and the rotor are mutually rubbed due to poor heat dissipation conditions of the motor stator body 2 is greatly reduced.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the disclosure. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing illustrates and describes the general principles, principal features, and advantages of the present disclosure. It will be understood by those skilled in the art that the present disclosure is not limited to the embodiments described above, which are presented solely for purposes of illustrating the principles of the disclosure, and that various changes and modifications may be made to the disclosure without departing from the spirit and scope of the disclosure, which is intended to be covered by the claims.

Claims

1. The dry stator wet rotor submersible full tubular pump comprises an outer shell (1), a motor stator body (2), a motor rotor body (3), an impeller (4), a water suction chamber (100) and a water outlet chamber (101), wherein the water suction chamber (100) is connected with the outer shell (1), and a water flow channel is formed between the water suction chamber (100) and the water outlet chamber (101);

the motor stator body (2) is sealed in a water-tight manner through a dry winding structure device (4);

the motor rotor body (3) is arranged on the motor stator body (2), is positioned on the outer side of the dry winding structure device (4) and is positioned in the water flow channel.

2. The submersible full-through flow pump according to claim 1, wherein a mandrel of the motor rotor body (3) is sleeved with a rolling bearing, the mandrel of the motor rotor body (3) is installed on the inner wall of a hub of the impeller (4) through the rolling bearing, two ends of the hub of the impeller (4) seal a cavity of the rolling bearing through end covers, and blades of the impeller (4) are uniformly distributed on the outer circle of the hub of the impeller (4).

3. The submersible full tubular pump according to claim 2, characterized in that the outer circle of the blades of the impeller (4) is fixed on the inner wall of the iron core of the motor rotor body (3).

4. The submersible full tubular pump according to claim 1, wherein the outer housing (1), the motor stator body (2), the motor rotor body (3) and the impeller (4) are coaxially arranged.

5. The submersible full tubular pump according to claim 2, wherein the front end of the mandrel of the motor rotor body (3) is fixedly connected to the water suction chamber (100), and the rear end of the mandrel is fixedly connected to the guide vane body (5).

6. The submersible full cross-flow pump according to claim 1, wherein the flow channel is provided as a straight channel, the impeller (4) being located within the flow channel.