CN213392732U

CN213392732U - Heavy liquid isolated protector based on semiconductor ring temperature control

Info

Publication number: CN213392732U
Application number: CN202022275841.7U
Authority: CN
Inventors: 黄峥; 高照; 曹洪祥; 张乐洋
Original assignee: China University of Petroleum East China
Current assignee: China University of Petroleum East China
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-06-08
Anticipated expiration: 2030-10-14

Abstract

The utility model relates to a heavy liquid isolated protector based on semiconductor ring accuse temperature belongs to the centrifugal pump protector technical field that dives in the pit, heavy liquid isolated protector based on semiconductor ring accuse temperature is by the battery, the protector top connection, the inertia parting fluid, the semiconductor ring, parts such as footstep bearing rotating ring are constituteed, heavy liquid isolated protector middle section is equipped with the inner chamber, the exocoel, the inner chamber is filled with transformer oil, exocoel and formation water intercommunication, the exocoel bottom is separated by with the inertia parting fluid of high proportion, be equipped with the semiconductor ring in the inner chamber, it makes transformer oil volume change to control the temperature through the semiconductor ring, let exocoel liquid level go up and down, thereby prevent inside formation water gets into the motor, effectively protect the centrifugal pump that dives in.

Description

Heavy liquid isolated protector based on semiconductor ring temperature control

Technical Field

The utility model relates to a heavy liquid isolated protector based on semiconductor ring accuse temperature belongs to the centrifugal pump protector technical field that dives in the pit.

Background

The electric submersible centrifugal pump is used as a rodless oil pumping device, and mostly works under the working fluid level, and the submergence can reach dozens of meters to hundreds of meters. Therefore, with the increase of the pressure on the motor shell of the submersible centrifugal pump, formation water can permeate into the motor through the joint of the pump under the action of the pressure, so that the insulation of the centrifugal pump is damaged, and the working capacity is lost. There is therefore a need for an intermediate protector that enables the pressure of the transformer oil inside the pump motor to be higher than the pressure of the formation water downhole and avoids formation water entering the motor directly.

Disclosure of Invention

In order to solve the technical problem existing in the prior art, the utility model provides a heavy liquid isolated protector based on semiconductor ring accuse temperature.

In order to achieve the purpose, the utility model discloses a technical solution as follows:

a heavy liquid isolation type protector based on semiconductor ring temperature control comprises an upper joint, a nut, a battery, an inner spacer ring, a semiconductor ring, a protective shaft sleeve, inert isolation liquid, a protector lower joint, a thrust bearing, a positioning nut and a conduit, it is characterized in that a nut, an end face seal and a battery are arranged in an upper joint of the heavy liquid isolation type protector based on the temperature control of the semiconductor ring, an inner isolation ring is arranged in the middle section of the protector and divides the middle section of the protector into an inner cavity and an outer cavity, the semiconductor ring and transformer oil are arranged in the inner cavity, the semiconductor ring is connected with a battery through a conduit, the outer cavity is communicated with the ground water, the inner cavity is communicated with the bottom of the outer cavity through inert spacer fluid and separates the transformer oil from the ground water, and the lower end of the protector is provided with a thrust bearing;

the utility model has the advantages that:

the utility model discloses an upper end is equipped with three end face seals, reduce the pressure differential between the end face seal, greatly reduced the leakage volume, the end face seal is equipped with the nut, be used for preventing the grit from getting into the sealed, later divide into inner chamber and exocoel through utilizing interior spacer ring with the protector middle section, the inner chamber fills with transformer oil and communicates with each other with the pump motor is inside, the exocoel communicates with formation water, the inert buffer fluid that has high proportion at the bottom of the inner and outer chamber separates transformer oil and formation water, be equipped with the semi-conductor ring in the inner chamber, when the motor is worked, the work of semi-conductor ring heats, make transformer oil volume expansion, extrude inert buffer fluid, force underground formation water to discharge, when the motor is out of work, the semi-conductor ring refrigerates, transformer oil volume reduces, supply transformer oil to the motor in, satisfy the requirement that formation water prevented from getting into the motor, and can, the pressure of transformer oil in the motor is maintained, the structure is safe and reliable, the leakage amount can be greatly reduced, and the underground submersible centrifugal pump can be effectively protected due to the fact that the temperature is controlled by the semiconductor ring and the underground work reaction is rapid.

Drawings

FIG. 1 is a schematic view of the system of the present invention;

FIG. 2 is a schematic view of a battery ring;

in the figure: 1. the device comprises a protector upper joint, 2, a nut, 3, an end face seal, 4, a battery, 5, a shell, 6, an inner spacing ring, 7, a semiconductor ring, 8, a protective shaft sleeve, 9, an inert isolation liquid, 10, a joint, 11, a shell, 12, a protector lower joint, 13, a thrust bearing static ring, 14, a thrust bearing dynamic ring, 15, a positioning nut, 16, an outer cavity, 17, an inner cavity, 18 and a conduit.

Detailed Description

The invention will be further described with reference to the accompanying drawings:

as shown in fig. 1, the heavy liquid isolation type protector based on semiconductor ring temperature control comprises a protector upper joint 1, a nut 2, an end face seal 3, a battery 4, a shell 5, an inner partition ring 6, a semiconductor ring 7, a protective shaft sleeve 8, an inert isolation liquid 9, a joint 10 and a shell 11. When the motor of the submersible centrifugal pump works, the upper end of the upper connector 1 of the protector is provided with three end face seals 3, the pressure difference between every two end faces can be reduced, so that the leakage amount is reduced, and the end face seals 3 are provided with nuts 2 for preventing underground stone sand from entering a sealing chamber. Then, the middle section of the protector is divided into an inner cavity 17 and an outer cavity 16 by utilizing an inner spacer ring 6, the inner cavity 17 is filled with transformer oil and is communicated with the interior of a pump motor, the outer cavity 16 is communicated with formation water, the bottom of the inner cavity and the bottom of the outer cavity are provided with an inert spacer liquid 9 with high specific gravity to separate the transformer oil from the formation water, a semiconductor ring 7 is arranged in the inner cavity 17, when the motor works, the semiconductor ring 7 is communicated with a battery 4 in an upper connector 1 through a conduit 18 to work and heat, so that the volume of the transformer oil in the inner cavity 17 is expanded, the inert spacer liquid 9 is squeezed, underground formation water in the outer cavity 16 is forced to be discharged, the requirement of preventing the formation water from entering the interior of the motor is met, when the motor does not work, the semiconductor ring 7 is refrigerated, the volume of the transformer oil in the inner cavity 17 is reduced, the transformer, the structure is safe and reliable, the leakage amount can be greatly reduced, the underground work reaction is rapid due to the temperature control of the semiconductor ring, and the underground submersible centrifugal pump can be effectively protected.

In this embodiment, the heavy-fluid isolated protector based on semiconductor ring temperature control is composed of an upper joint 1, a nut 2, a battery 3, an inner isolating ring 6, a semiconductor ring 7, a protective shaft sleeve 8, an inert isolating liquid 9, a protector lower joint 12, a thrust bearing static ring 13, a thrust bearing moving ring 14, a positioning nut 15 and a conduit 18, and is characterized in that the nut 2, an end face seal 3 and the battery 4 are arranged in the heavy-fluid isolated protector upper joint 1 based on semiconductor ring temperature control, the inner isolating ring 6 is arranged in the middle section of the protector, the middle section of the protector is divided into an inner cavity 17 and an outer cavity 16 by the inner isolating ring 6, the semiconductor ring 7 and a variable pressure oil are arranged in the inner cavity 17 in a measuring way and are communicated with the interior of a centrifugal pump motor, the semiconductor ring 7 is connected with the battery 4 through the conduit 18, the outer cavity 16 is communicated with the ground water, the inner cavity 17 is communicated with the bottom of the outer cavity 16 through the inert, the lower end of the protector is provided with a thrust bearing static ring 13 and a thrust bearing dynamic ring 14.

The technical means disclosed in the present invention is not limited to the technical means disclosed in the above embodiments, but also includes the technical solution formed by combining the above technical features at will. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several modifications and color modifications can be made, and these modifications and color modifications are also considered as the protection scope of the present invention.

Claims

1. The heavy liquid isolated protector based on semiconductor ring temperature control is characterized in that the middle section of the heavy liquid isolated protector is divided into an inner cavity and an outer cavity by the inner isolating ring, the semiconductor ring on the inner side of the inner cavity is connected with the battery through a conduit, the outer cavity is communicated with a stratum water phase, and the inner cavity is communicated with the outer cavity through a bottom inert isolating liquid.