CN211693343U

CN211693343U - Marine high-power submersible linear motor balance buffer

Info

Publication number: CN211693343U
Application number: CN202020189635.1U
Authority: CN
Inventors: 于继飞; 纪树立; 杨阳; 甄东芳; 高强
Original assignee: China National Offshore Oil Corp CNOOC; CNOOC Research Institute Co Ltd
Current assignee: China National Offshore Oil Corp CNOOC; CNOOC Research Institute Co Ltd
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2020-10-16
Anticipated expiration: 2030-02-20

Abstract

The utility model relates to a balance buffer of an ocean high-power submersible linear motor, which comprises a balance sieve tube, a balance piston, a balance cylinder barrel, a balance spring and a flow buffer hole; the top end of the balance cylinder barrel is connected with the first end of the balance sieve tube through an internal thread, the second end of the balance sieve tube is connected with a connector of a linear motor, a rotor of the linear motor is arranged in the balance sieve tube, and the bottom end of the balance cylinder barrel is directly contacted with underground well fluid; the balance spring is arranged in the balance cylinder barrel, the first end of the balance spring is fixed at the bottom of the balance cylinder barrel, and the flow buffer hole is formed in the center of the bottom; the second end of the balance spring is provided with the balance piston, the balance piston is located in the balance cylinder barrel, and the end part of the rotor is in contact with the balance piston. The utility model discloses simple structure, easily processing, the high-power latent oily linear electric motor of reducible ocean is moved well liquid and is gone down to the injury that the lower dead center caused the motor to the resistance of active cell and buffering active cell. The working efficiency and the service life of the equipment are improved.

Description

Marine high-power submersible linear motor balance buffer

Technical Field

The utility model relates to a balanced buffer especially relates to a balanced buffer of latent oily linear electric motor of ocean high power.

Background

During the operation of the marine high-power submersible linear motor, well liquid can generate resistance to the rotor, and the rotor can also cause damage to the motor when moving downwards to a lower dead point. There is currently no other better solution to this problem. Therefore, a special device for reducing the resistance of well fluid to the rotor in the operation of the marine high-power submersible linear motor and buffering the damage of the rotor to the motor caused by the fact that the rotor moves down to the lower dead point is urgently needed to be developed, and the special device has important significance for prolonging the service life of the linear motor.

Disclosure of Invention

To the above problem, the utility model aims at providing a balanced buffer of latent oily linear electric motor of ocean high power can effectively improve the life of motor.

In order to achieve the purpose, the utility model adopts the following technical proposal: a balance buffer of an ocean high-power submersible linear motor comprises a balance sieve tube, a balance piston, a balance cylinder barrel, a balance spring and a flow buffer hole; the top end of the balance cylinder barrel is connected with the first end of the balance sieve tube through an internal thread, the second end of the balance sieve tube is connected with a connector of a linear motor, a rotor of the linear motor is positioned in the balance sieve tube, and the bottom end of the balance cylinder barrel is directly contacted with underground well fluid; the balance spring is arranged in the balance cylinder barrel, the first end of the balance spring is fixed at the bottom of the balance cylinder barrel, and the flow buffer hole is formed in the center of the bottom; the second end of the balance spring is provided with the balance piston, the balance piston is located in the balance cylinder barrel, and the end part of the rotor is in contact with the balance piston.

Furthermore, a plurality of balance holes are formed in the pipe wall of the balance sieve pipe.

The utility model discloses owing to take above technical scheme, it has following advantage: 1. the utility model discloses a balance spring and balance piston's interact and the mild release in flow buffer hole to reach the purpose of balanced buffering, reduce the high-power latent oily linear electric motor of diving of ocean and move well liquid to the resistance of active cell and cushion the active cell and go down the injury that the lower dead center caused to the motor, improve linear electric motor's life. 2. The utility model discloses balanced cylinder passes through threaded connection at balanced screen pipe lower extreme, and inside balanced piston and the balance spring of being equipped with of cylinder. The function of connecting the balance sieve tube, the fixed piston and the spring is achieved. 3. The utility model discloses bottom is equipped with the flow buffer hole in the balanced cylinder for gently release the interior liquid of cylinder, thereby realized the purpose of balanced buffering.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Detailed Description

In the description of the present invention, it should be understood that the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. The present invention will be described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1, the utility model provides a balanced buffer of latent oily linear electric motor of high-power of ocean, it includes balanced cylinder 1, balanced screen pipe 2, balance spring 3, flow buffer hole 4 and balanced piston 5.

The top end of the balance cylinder barrel 1 is connected with the first end of the balance sieve tube 2 through internal threads, the second end of the balance sieve tube 2 is connected with a connector of the linear motor, and the rotor 6 of the linear motor is positioned in the balance sieve tube 2; the bottom end of the balance cylinder barrel 1 is directly contacted with downhole well fluid. A balance spring 3 is arranged in the balance cylinder barrel 1, the first end of the balance spring 3 is fixed at the bottom of the balance cylinder barrel 1, and a flow buffer hole 4 is arranged at the center of the bottom and used for slowly releasing liquid in the balance cylinder barrel 1, so that the aim of balance buffer is fulfilled; the second end of the balance spring 3 is provided with a balance piston 5, the balance piston 5 is positioned in the balance cylinder 1, and the end of the mover 6 is in contact with the balance piston 5.

In the above embodiment, a plurality of balance holes 7 are arranged on the pipe wall of the balance screen 2.

The utility model discloses when using, when active cell 6 goes upward, balance spring 3 bounces balance piston 5, and well liquid gets into 1 intussuseption spaces of balance cylinder from flow buffer hole 4. Meanwhile, well fluid enters from the balance holes 7 of the balance sieve tube 2 and fills the space left by the rotor 6 in the upward direction. When the mover 6 descends, the mover 6 firstly enters the balance screen 2, and well fluid in the balance screen 2 is discharged through the balance holes 7. When the rotor 6 is close to the lower dead point, the rotor 6 contacts with the balance piston 5 to drive the balance piston 5 to move downwards, well liquid in the balance cylinder barrel 1 and the balance spring 3 reversely push the balance piston 5 to slow down the downward impact of the rotor 6, the well liquid in the balance cylinder barrel 1 is smoothly discharged from the flow buffer hole 4, and the rotor 6 stably stops. Therefore, the purpose of balance buffering is achieved, and the service life of the linear motor is prolonged.

Above-mentioned each embodiment only is used for explaining the utility model discloses, the structure, size, the setting position and the shape of each part all can change to some extent on the basis of the technical scheme of the utility model discloses on the basis of technical scheme, all according to the utility model discloses the principle is to the improvement and the equivalence transform that individual part goes on, all should not exclude the utility model discloses a protection scope is outside.

Claims

1. The utility model provides a balanced buffer of latent oily linear electric motor of ocean high-power which characterized in that: the balance sieve tube, the balance piston, the balance cylinder barrel, the balance spring and the flow buffer hole are included;

the top end of the balance cylinder barrel is connected with the first end of the balance sieve tube through an internal thread, the second end of the balance sieve tube is connected with a connector of a linear motor, a rotor of the linear motor is positioned in the balance sieve tube, and the bottom end of the balance cylinder barrel is directly contacted with underground well fluid; the balance spring is arranged in the balance cylinder barrel, the first end of the balance spring is fixed at the bottom of the balance cylinder barrel, and the flow buffer hole is formed in the center of the bottom; the second end of the balance spring is provided with the balance piston, the balance piston is located in the balance cylinder barrel, and the end part of the rotor is in contact with the balance piston.

2. The balanced buffer of claim 1, wherein: and the pipe wall of the balance sieve pipe is provided with a plurality of balance holes.