A new stator shield sleeve welding structure

Abstract

The utility model discloses a new -type stator shield sleeve welding structure, including stator front flange, the stator front flange inner wall is equipped with stator shield sleeve, the stator front flange end face and the junction of stator shield sleeve end face weld as a whole, the stator front flange end face is located in the junction and is provided with annular groove, the annular groove and the junction form the welding plane between. The utility model's characteristics are: novel structure, convenient operation, through setting up annular groove and welding plane in the flange end face of stator front flane, make stator shield sleeve, stator front flange even heat, synchronous deformation, compact structure, and the flange end face is smooth after welding, need not to carry out secondary processing, increase strength, reduce the contact wear, greatly reduce the risk of leakage, increase the reliability of equipment safe operation, long service life.

Description

Technical Field

[0001] This utility model relates to the technical field of electric pumps, specifically to a novel stator shielding sleeve welding structure. Background Technology

[0002] The canned motor pump features an advanced design and high energy efficiency. Its completely leak-free operation successfully solves the problems of leakage in fluid transportation, making it an irreplaceable product in environmental protection projects. The shielding sleeve plays a crucial role in corrosion and leakage prevention, preventing the transported medium from entering the motor cavity and ensuring the long-term stable operation of the canned motor pump.

[0003] Our company currently has shielded electric pump shielding sleeve welding ( Figure 1 As shown, the stator front flange end face and the shielding sleeve end face are fused together. Since the shielding sleeve is very thin relative to the stator front flange, uneven heating will occur during fusion welding, causing the shielding sleeve to melt and deform severely (or melt completely). The stator front flange has just melted, and there is still uneven height and thickness of the flange end face after welding. The front flange end face needs to be processed again, which results in dimensional errors and deformation, resulting in low strength, easy wear, and potential safety hazards of leakage. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a new type of stator shielding sleeve welding structure.

[0005] The technical solution adopted by this utility model to achieve the above objectives is as follows:

[0006] A novel stator shielding sleeve welding structure includes a stator front flange, on the inner wall of which a stator shielding sleeve is fitted. The flange end face of the stator front flange and the shielding sleeve end face of the stator shielding sleeve are welded together. An annular groove is formed on the flange end face of the stator front flange at the connection point, and a welding plane is formed between the annular groove and the connection point.

[0007] The cross-section of the annular groove is an inverted trapezoid.

[0008] The width of the welding plane is the same as the thickness of the stator shield sleeve.

[0009] The features of this utility model are: novel structure and convenient operation. By setting an annular groove and welding plane on the end face of the stator front flange, the stator shielding sleeve and the stator front flange are heated evenly and deformed synchronously. The structure is strong and compact. Moreover, the end face of the stator front flange is smooth after welding, which does not require secondary processing, increases strength, reduces contact wear, greatly reduces the risk of leakage, increases the reliability of safe operation of equipment, and has a long service life. Attached Figure Description

[0010] Figure 1This is a schematic diagram of the existing shielding sleeve welding structure.

[0011] Figure 2 Structural diagram of this utility model Figure 1 .

[0012] Figure 3 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0013] Among them: 1. Stator front flange 2. Flange end face 3. Shielding sleeve 4. Shielding sleeve end face 5. Connection 6. Annular groove 7. Welding plane. Detailed Implementation

[0014] like Figure 2 , 3 As shown, this utility model is a novel stator shielding sleeve welding structure, including a stator front flange 1, a stator shielding sleeve 3 fitted on the inner wall of the stator front flange 1, the flange end face 2 of the stator front flange 1 and the connection 5 of the shielding sleeve end face 4 of the stator shielding sleeve 3 are welded together, the flange end face 2 of the stator front flange is provided with an annular groove 6 at the connection 5, the cross-section of the annular groove 6 is an inverted trapezoid, which facilitates the flow of molten welding liquid into the annular groove 6, a welding plane 7 is formed between the annular groove 6 and the connection 5, the width of the welding plane 7 is the same as or close to the thickness of the stator shielding sleeve 3.

[0015] Preferably, the stator shield sleeve 3 has a wall thickness of 0.5mm, and the welding plane 7 has a width of 0.5-0.6mm, so that the welding width of the stator shield sleeve welding surface is the same or similar to that of the stator front flange welding surface. When the stator shield sleeve 3 and the stator front flange 1 are fused and welded, since the welding widths on both sides are the same or similar, the stator shield sleeve 3 and the stator front flange 1 are heated evenly and deform synchronously, resulting in a solid and compact structure. Moreover, the welding liquid flows into the annular groove 6 during welding and remains there, making the flange end face 2 of the stator front flange 1 smooth. After welding, the fitting dimensions are not affected, no secondary processing is required, the strength is increased, the contact wear is reduced, the leakage risk is greatly reduced, and the reliability of the equipment's safe operation is increased.

[0016] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel stator shielding sleeve welding structure, characterized in that: The device includes a stator front flange, the inner wall of which is fitted with a stator shielding sleeve. The flange end face of the stator front flange and the shielding sleeve end face of the stator shielding sleeve are welded together at the connection point. An annular groove is provided on the flange end face of the stator front flange at the connection point, and a welding plane is formed between the annular groove and the connection point.

2. The novel stator shielding sleeve welding structure as described in claim 1, characterized in that: The cross-section of the annular groove is an inverted trapezoid.

3. The novel stator shielding sleeve welding structure as described in claim 1, characterized in that: The width of the welding plane is the same as the thickness of the stator shield sleeve.

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