An active flameproof crack submersible electric pump casing

Abstract

The invention discloses an active flameproof fissure submersible electric pump casing, wherein the front end of the submersible motor is the motor output shaft, the submersible motor is provided with a flameproof casing, the flameproof casing comprises a connecting section, the connecting section is screwed in the thread at the top end of the flameproof casing by means of fixing bolts, the middle part of the connecting section is sleeved with the submersible motor output shaft, the connecting section is further provided with a first slot hole and a second slot hole, a rubber ring is provided inside the first slot hole, the rubber ring is arranged up and down, the second slot hole has the same internal structure as the first slot hole, a side wall of the flameproof casing is provided with a corrugated component, the corrugated component comprises a water suction pump arranged at the lower end of the bellows, one side of the water suction pump is fixed on the circumferential side wall of the flameproof casing, the output end of the water suction pump is connected to the inner wall of the flameproof casing, the advantages of the invention are: under the condition of ensuring the sealing of the deep well submersible pump, the water in the flameproof casing is effectively circulated for uniform heat dissipation, and the flameproof effect is achieved, a stable operating environment is provided for the motor, and the noise of the motor is also reduced.

Description

Technical Field

[0001] The invention relates to the field of water pumps, in particular to a shell of a waterproof water pump. Background Art

[0002] With the development of oil, natural gas, petrochemical, coal mining and other fields, especially offshore oil, natural gas, oil caverns, a large number of submersible electric pumps with explosion-proof and flameproof properties, and resistance to seawater, fissure water and other flammable, explosive and corrosive environments are needed. Ordinary submersible electric pumps are not explosion-proof, flameproof, corrosion-resistant and fissure-water-resistant. The protective shell of the previous submersible pump is simply a sealing function, and such a sealed shell will not have an explosion-proof effect once the internal motor explodes in deep water. Summary of the invention

[0003] In order to solve the explosion-proof effect and improve the quiet effect, the present invention discloses an active explosion-proof fissure submersible electric pump casing.

[0004] The specific technical solutions are as follows:

[0005] An active flameproof fissure submersible electric pump housing comprises a submersible motor, the front end of the submersible motor is a motor output shaft, the submersible motor is provided with an explosion-proof housing, the explosion-proof housing comprises a connecting section, the connecting section is screwed in the thread at the top of the explosion-proof housing through a fixing bolt, the middle of the connecting section is sleeved with the output shaft of the submersible motor, the connecting section is also provided with a first slot and a second slot, a rubber ring is provided inside the first slot, the rubber ring is arranged up and down, a sleeve is provided between the rubber rings, a cable is sleeved in the middle of the rubber ring, the second slot is consistent with the internal structure of the first slot, a side wall of the explosion-proof housing is provided with a corrugated component, and the explosion-proof housing Two water openings are also provided inside the circumferential side wall of the body, and a waterproof plug is provided inside the water opening. The bellows component includes a water suction pump arranged at the lower end of the bellows, one side of the water suction pump is fixed on the circumferential side wall of the explosion-proof shell, and the output end of the water suction pump is connected to the inner wall of the explosion-proof shell. The bellows component includes a bellows, one side of the bellows is connected to the wall of the explosion-proof shell as a whole, the bellows component also includes an outer tube, the other side of the bellows is connected to the outer tube as a whole, the circumferential diameter of the outer tube is larger than the diameter of the explosion-proof shell, and an emptying pipe is also provided on the inner side of the bellows, and the emptying pipe is fixedly arranged on the inner wall of the explosion-proof shell.

[0006] The bellows is equally divided into two sections, the two sections are connected by an outer pipe, and the length of the exhaust pipe is greater than the length of one section of the bellows.

[0007] The corrugation pitches of the bellows are different, ie L2>L1.

[0008] The vertical dimension of the explosion-proof housing is greater than the vertical dimension of the submersible motor.

[0009] The advantages of the present invention are: under the condition of ensuring the sealing of the deep well submersible pump, the water in the explosion-proof housing is effectively circulated to uniformly dissipate heat, and it has an explosion-proof effect, provides a stable operating environment for the motor, and also reduces the noise of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the present invention;

[0011] Figure 2 for Figure 1 A partial enlarged view of point A. DETAILED DESCRIPTION

[0012] The present invention is described in detail below in conjunction with the accompanying drawings. Figure 1 , Figure 2 As shown, an active flameproof fissure submersible electric pump housing comprises a submersible motor 1, the front end of the submersible motor 1 is a motor output shaft 101, the submersible motor is provided with a flameproof housing 2, the flameproof housing comprises a connecting section 3, the connecting section 3 is screwed into the thread at the top of the flameproof housing through a fixing bolt 4, the middle of the connecting section is sleeved with the submersible motor output shaft 101, the connecting section is further provided with a first slot 301 and a second slot 302, a rubber ring 5 is provided inside the first slot, the rubber ring 5 is arranged up and down, a sleeve 6 is provided between the rubber rings, a cable 7 is sleeved in the middle of the rubber ring, the second slot 302 has the same internal structure as the first slot 301, a corrugated component 8 is provided on one side wall of the flameproof housing, and the flameproof housing Two water holes 9 are also provided inside the circumferential side wall of the body, and a waterproof plug 10 is provided inside the water hole. The bellows component 8 includes a water suction pump 11 arranged at the lower end of the bellows, one side of the water suction pump is fixed on the circumferential side wall of the explosion-proof shell 2, and the output end 1101 of the water suction pump is connected to the inner wall of the explosion-proof shell 2. The bellows component includes a bellows 12, one side of the bellows 12 is connected to the wall of the explosion-proof shell 2 as a whole, and the bellows component also includes an outer tube 13, the other side of the bellows 12 is connected to the outer tube 13 as a whole, the circumferential diameter of the outer tube 1 is larger than the diameter of the explosion-proof shell 2, and an emptying pipe 14 is also provided on the inner side of the bellows 12, and the emptying pipe 14 is fixedly arranged on the inner wall of the explosion-proof shell 2.

[0013] The bellows 12 is equally divided into two sections, the two sections are connected by an outer tube 13, and the length of the exhaust pipe 14 is greater than the length of one section of the bellows.

[0014] The corrugation pitches of the bellows are different, ie L2>L1.

[0015] The vertical dimension of the explosion-proof housing is greater than the vertical dimension of the submersible motor.

[0016] The beneficial effects of the present invention are as follows: a waterproof sealing function is added to the submersible motor, and under the condition of increased sealing, the submersible motor has explosion-proof and flameproof effects. The combination of the bellows of the bellows assembly and the water suction pump, on the one hand, allows the water in the explosion-proof shell to circulate and effectively dissipate heat. On the other hand, when an explosion occurs in the explosion-proof shell, the bellows can produce a limited amount of deformation to absorb the explosion. In addition, since there are many mechanical structures in the explosion-proof shell, a small amount of impurities will be generated during operation. When the liquid in the explosion-proof shell flows, the impurities flow through the drain pipe and the impurities will be deposited between the bellows and the drain pipe. When the work is completed, the impurities in the explosion-proof shell can be centrally processed. The present invention solves many problems of sealing, explosion-proofing, heat dissipation, and impurity collection of submersible motors, and effectively provides better working conditions for submersible motors.

Claims

1. An active flameproof crack submersible electric pump housing, comprising a submersible motor, the front end of the submersible motor being a motor output shaft, characterized in that: The submersible motor is provided with an explosion-proof shell, and the explosion-proof shell includes a connecting section, and the connecting section is screwed into the thread at the top of the explosion-proof shell by a fixing bolt, and the middle part of the connecting section is sleeved with the output shaft of the submersible motor, and the connecting section is also provided with a first slot and a second slot, and a rubber ring is provided inside the first slot, and the rubber ring is arranged up and down, and a sleeve is arranged between the rubber rings, and a cable is sleeved in the middle of the rubber ring, and the internal structure of the second slot is consistent with that of the first slot, and a corrugated component is provided on one side wall of the explosion-proof shell, and two water outlets are also provided inside the circumferential side wall of the explosion-proof shell, and a waterproof plug is provided inside the water outlet, and the corrugated component includes a water suction pump arranged at the lower end of the bellows, and one side of the water suction pump is fixed on the explosion-proof On the circumferential side wall of the shell, the output end of the water suction pump is connected to the inner wall of the explosion-proof shell, the bellows assembly includes a bellows, one side of the bellows is connected to the wall of the explosion-proof shell as a whole, the bellows assembly also includes an outer tube, the other side of the bellows is connected to the outer tube as a whole, the circumferential diameter of the outer tube is larger than the diameter of the explosion-proof shell, and an emptying pipe is also provided on the inner side of the bellows, the emptying pipe is fixedly arranged on the inner wall of the explosion-proof shell, the bellows is divided into two sections, the two sections of the bellows are connected by the outer tube, the length of the emptying pipe is larger than the length of one section of the bellows, the corrugation spacing of the bellows is different, that is, L2>L1, and the vertical dimension of the explosion-proof shell is larger than the vertical dimension of the submersible motor.

Images