A well submersible motor barrel oil bladder and base structure

Abstract

This utility model discloses a well submersible motor barrel oil bladder and base structure, including a barrel, a barrel pressure pad, and a base. An oil bladder is housed inside the barrel. The pressure pad and base have centrally located mounting holes. The upper center of the base is recessed. The pressure pad and base press against each other to securely mount the bottom of the barrel. A welding nut is welded to the center of the base's bottom. Fastening bolts pass through the mounting holes on the pressure pad and base and are threaded onto the welding nut, thus securing the pressure pad and base. This utility model adjusts the position of the welding nut to ensure that the oil bladder contacts the stainless steel base smoothly when contracting, preventing unnecessary deformation. The welding nut eliminates interference from the recessed area of ​​the original stainless steel base during welding, allowing for more processing space and making welding more convenient and safer. The pressure pad uses less material, reducing costs. The connecting bolts, while maintaining the engagement length, are shorter, improving structural stability and reducing costs.

Description

Technical Field

[0001] This utility model relates to the field of pump body barrel structure improvement technology, and in particular to a well submersible motor barrel oil bladder and base structure. Background Technology

[0002] like Figure 1 As shown, the existing submersible motor barrel, oil bladder, and base structure includes a barrel 1, a barrel pressure pad 2, and a base 3. An oil bladder 4 is installed inside the barrel. The barrel pressure pad and the base have a mounting hole in the center. The upper center of the base is recessed, and a welding nut 7 is installed in the groove in the upper center of the base. The barrel pressure pad and the base are fastened and fixed by a fastening bolt 6 passing through the mounting hole and threaded to the welding nut. The barrel pressure pad and the base are pressed together to fix the bottom of the barrel. A sealing ring 5 is provided between the base and the barrel.

[0003] In daily use, the existing submersible motor barrel oil bladder and base structure causes the oil bladder to contact the welded nut of the base when it contracts, resulting in unnecessary and excessive deformation. Furthermore, the welded nut of this structure needs to be welded into the central groove on the upper part of the base, which is prone to interference during welding and affects the ease of welding. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model designs a well submersible motor barrel oil bladder and base structure.

[0005] The present invention adopts the following technical solution: A submersible well motor barrel oil bladder and base structure includes a barrel, a barrel pressure pad, and a base. An oil bladder is placed inside the barrel. The barrel pressure pad and the base have mounting holes in their centers. The upper center of the base is recessed. The barrel pressure pad and the base are pressed together to fix the bottom of the barrel. A welding nut is welded to the center of the bottom of the base. Fastening bolts pass through the mounting holes on the barrel pressure pad and the base and are threaded to the welding nut, thereby fastening and pressing the barrel pressure pad and the base.

[0006] Preferably, a sealing ring is provided between the base and the barrel.

[0007] Preferably, the base has an M-shaped cross-section.

[0008] Preferably, the base is a stainless steel base.

[0009] Preferably, a washer is installed on the fastening bolt.

[0010] The beneficial effects of this utility model are: (1) This utility model adjusts the position of the welding nut to ensure that the oil bladder can make flat contact with the stainless steel base when it contracts, and will not cause excessive deformation due to the welding nut; (2) The improved welding nut does not have the interference of the original recessed part of the stainless steel base during the welding process, the processing space is more complete, and the welding is more convenient and safe; (3) The improved barrel pressure pad uses less material, reducing costs, and the connecting screw shortens its length while ensuring the engagement length, improving the strength of the screw under tangential stress, improving the stability of the structure and reducing costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of an existing submersible motor barrel oil bladder and base structure for wells; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a schematic diagram of a stainless steel base in this utility model; In the diagram: 1. Barrel, 2. Barrel pressure pad, 3. Base, 4. Oil bladder, 5. Sealing ring, 6. Fastening bolt, 7. Welding nut. Detailed Implementation

[0012] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example: Figure 2 and Figure 3 As shown, a submersible well motor barrel oil bladder and base structure includes a barrel 1, a barrel pressure pad 2, and a base 3. An oil bladder 4 is placed inside the barrel. The barrel pressure pad and the base have mounting holes in their centers. The upper center of the base is recessed. The barrel pressure pad and the base are pressed together to fix the bottom of the barrel. A welding nut is welded to the center of the bottom of the base. Fastening bolts 6 pass through the mounting holes on the barrel pressure pad and the base and are threaded to the welding nut 7, thereby fastening and pressing the barrel pressure pad and the base.

[0013] A sealing ring 5 is installed between the base and the barrel. The base has an M-shaped cross-section. The base is made of stainless steel. Washers are installed on the fastening bolts.

[0014] This invention adjusts the position of the welding nut to ensure that the oil bladder can make flat contact with the stainless steel base when it contracts, without causing unnecessary deformation due to the welding nut. The improved welding nut does not interfere with the original stainless steel base's recessed area during the welding process, resulting in more processing space and making welding more convenient and safer. The improved barrel pressure pad uses less material, reducing costs. The connecting screw is shortened while maintaining the engagement length, increasing the screw's strength under tangential stress, improving structural stability and reducing costs.

[0015] 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 well submersible motor barrel oil bladder and base structure, comprising a barrel, a barrel pressure pad, and a base, wherein an oil bladder is disposed inside the barrel, the barrel pressure pad and the base have mounting holes at their centers, the upper center of the base is recessed, and the barrel pressure pad and the base are pressed together to secure the bottom of the barrel for fixed installation, characterized in that... A welding nut is welded to the center of the bottom of the base. The fastening bolt passes through the mounting hole on the barrel pad and the base and is threaded to the welding nut, thereby fastening and pressing the barrel pad and the base.

2. The structure of the well submersible motor barrel oil bladder and base according to claim 1, characterized in that, A sealing ring is provided between the base and the barrel.

3. The structure of the well submersible motor barrel oil bladder and base according to claim 1, characterized in that, The base has an M-shaped cross-section.

4. The structure of the well submersible motor barrel oil bladder and base according to claim 1, characterized in that, The base is a stainless steel base.

5. The structure of the well submersible motor barrel oil bladder and base according to claim 1, characterized in that, Washers are installed on the fastening bolts.

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