A novel submersible motor mounting structure for wells

Abstract

This utility model discloses a novel submersible motor upper seat structure for wells, including a motor upper seat with an oil chamber and a bearing chamber inside. A mechanical seal chamber is located above the bearing chamber for installing the mechanical seal. The oil chamber and the mechanical seal chamber are connected by a slot. Positioning holes are evenly distributed along the circumference of the side of the motor upper seat, with the positioning holes positioned higher than the highest point of the oil chamber, and the highest point of the mechanical seal chamber higher than the oil chamber. This utility model modifies the positional relationship between the oil chamber, the mechanical seal chamber, and the positioning holes, reducing quality risks in casting and machining, improving product quality and production efficiency; it increases oil saturation, completing oil injection in one step, significantly saving labor costs; the upper seat is made of hard-anodized aluminum alloy, which has low cutting resistance, is easy to machine, causes less tool wear, is less prone to corrosion, has minimal impact on the appearance of the electric pump, and has a cost similar to that of gray cast iron upper seats. Aluminum alloy is lightweight, reducing transportation and assembly costs, and has good thermal conductivity, which can lower the temperature of the motor during operation.

Description

Technical Field

[0001] This utility model relates to the field of submersible motor technology for wells, and in particular to a novel upper structure for a submersible motor for wells. Background Technology

[0002] like Figures 1-3 As shown, the existing submersible motor mounting structure includes a motor mounting base 1, with an oil chamber 2 and a bearing chamber 3 inside. A mechanical seal chamber 4 is located above the bearing chamber for installing the mechanical seal. The oil chamber and the mechanical seal chamber are connected by a slot 5. Positioning holes 6 are evenly distributed around the circumference of the side of the motor mounting base. In the existing submersible motor mounting structure, the positioning holes are flush with the mechanical seal chamber and the oil chamber, causing a protrusion 7 to form in the oil chamber where the positioning holes pass, obstructing the oil passage. This results in a complex internal structure of the oil chamber, posing quality risks during casting and machining, and requiring high production standards. Saturating the motor cavity with oil is extremely difficult; even with oil replenishment, the motor cannot be fully filled.

[0003] Furthermore, the motor mount is made of gray cast iron, which is cast in one piece. Even after electrophoresis treatment, the motor mount is still prone to rust. The rust products flow through water onto the stainless steel surface of the electric pump, causing external surface contamination. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model designs a new type of submersible motor mount structure for wells.

[0005] The present invention adopts the following technical solution: A novel submersible motor mounting structure for wells includes a motor mounting base, an oil chamber and a bearing chamber inside the motor mounting base, a mechanical seal chamber above the bearing chamber for installing a mechanical seal, the oil chamber and the mechanical seal chamber being connected by a slot, and positioning holes evenly distributed along the circumference on the side of the motor mounting base, the positioning holes being positioned higher than the highest point of the oil chamber, and the highest point of the mechanical seal chamber being higher than the oil chamber.

[0006] Preferably, the motor mount is integrally cast from aluminum alloy.

[0007] Preferably, the positioning hole is located 10-20 mm above the highest point of the oil chamber.

[0008] Preferably, the highest point of the mechanical seal chamber is 5-10 mm higher than the oil chamber.

[0009] The beneficial effects of this utility model are: (1) This utility model modifies the positional relationship between the oil chamber, the mechanical seal chamber, and the positioning hole, reducing the quality risks of casting and machining, and improving product quality and production efficiency; (2) It improves the oil saturation, completes oil injection in one go, and greatly saves labor costs; (3) The aluminum upper seat is made of hard-anodized aluminum alloy, which has low cutting resistance, is easy to process, has less tool wear, enhanced corrosion resistance, is not easily corroded, has little impact on the appearance of the electric pump, and has a cost similar to that of gray cast iron upper seat. In addition, aluminum alloy is lighter, which can reduce transportation and assembly costs, and has good thermal conductivity, which can reduce the temperature of the motor when it is working; (4) The blank processing technology is changed from sand casting to die casting, which has high blank production efficiency, is suitable for large-scale production, has low labor costs, good batch stability, and less blank allowance, which reduces subsequent machining allowance. Attached Figure Description

[0010] Figure 1 This is a three-dimensional diagram of the existing submersible motor mount structure for wells; Figure 2 This is a bottom view of the existing submersible motor mounting structure for wells; Figure 3 yes Figure 2 A cross-sectional view along the AA direction; Figure 4 This is a perspective view of the present invention; Figure 5 This is a bottom view of the present invention; Figure 6 yes Figure 5 A cross-sectional view along the BB direction; In the diagram: 1. Motor mount, 2. Oil chamber, 3. Bearing chamber, 4. Mechanical seal chamber, 5. Slot, 6. Positioning hole. Detailed Implementation

[0011] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings: Example: Figures 4-6 As shown, a novel submersible motor upper structure for wells includes a motor upper 1, an oil chamber 2 and a bearing chamber 3 inside the motor upper 1, a mechanical seal chamber 4 above the bearing chamber for installing a mechanical seal, the oil chamber and the mechanical seal chamber being connected by a slot 5, and positioning holes 6 evenly distributed along the circumference on the side of the motor upper 1, the positioning holes being positioned higher than the highest point of the oil chamber, and the highest point of the mechanical seal chamber being higher than the oil chamber.

[0012] The motor mount is integrally cast from aluminum alloy. The positioning hole is 10-20mm higher than the highest point of the oil chamber. The highest point of the mechanical seal chamber is 5-10mm higher than the oil chamber.

[0013] This invention modifies the positional relationship between the oil chamber, the mechanical seal chamber, and the positioning hole, reducing potential quality issues in casting and machining, and improving product quality and production efficiency. It increases oil saturation, completing oil injection in a single step, significantly saving labor costs. The smooth bottom plane of the oil injection hole allows for efficient air removal from the motor cavity, ensuring oil saturation, meeting motor performance requirements, and guaranteeing motor lifespan. The aluminum upper seat is made of hard-anodized aluminum alloy, which has low cutting resistance, is easy to machine, reduces tool wear, enhances corrosion resistance, and has minimal impact on the pump's appearance, while maintaining a cost similar to gray cast iron upper seats. Furthermore, aluminum alloy is lightweight, reducing transportation and assembly costs, and its good thermal conductivity lowers the motor's operating temperature. The blank processing technology has been changed from sand casting to die casting, resulting in high blank production efficiency, suitability for large-scale production, low labor costs, good batch stability, and less blank allowance, reducing subsequent machining allowances.

[0014] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A novel submersible motor mounting structure for wells, comprising a motor mounting base, wherein an oil chamber and a bearing chamber are formed within the motor mounting base, a mechanical seal chamber is provided above the bearing chamber for installing a mechanical seal, the oil chamber and the mechanical seal chamber are connected by a slot, and positioning holes are evenly formed along the circumference on the side of the motor mounting base, characterized in that... The positioning hole is located above the highest point of the oil chamber, and the highest point of the mechanical seal chamber is above the oil chamber.

2. The novel submersible motor mount structure for wells according to claim 1, characterized in that, The motor mount is integrally cast from aluminum alloy.

3. The novel submersible motor mount structure for wells according to claim 1, characterized in that, The positioning hole is located 10-20 mm above the highest point of the oil chamber.

4. The novel submersible motor mount structure for wells according to claim 1, characterized in that, The highest point of the mechanical seal chamber is 5-10 mm higher than that of the oil chamber.

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