CN217813363U - Screw pump well mechanical seal removing device - Google Patents

Abstract

The technical scheme of the utility model a screw pump well mechanical seal remove device mainly solves the problem that current screw pump well mechanical seal seat takes out the difficulty and very easily damages the dropout. The method is characterized in that: a spiral pressing cap (4) is sleeved on the large step of the central pipe (2) in a threaded manner, and a connecting sleeve (5) and a conical expansion body (6) are sequentially sleeved on the large step at the front part of the spiral pressing cap (4); the spiral pressure cap (4), the connecting sleeve (5) and the conical expansion body (6) are tightly contacted with each other; an expandable base (7) is sleeved on the small step at the front end of the central tube (2) through threads; a handle (1) is arranged at the rear end of the central pipe, and a vibration component (3) is sleeved on the central pipe (2); the vibrating component (3) can move up and down on the pipe body of the central pipe (2). According to the screw pump mechanical seal taking-out device, acting force is applied in a vibration hammer knocking mode, so that the mechanical seal seat can be taken out smoothly.

Description

Screw pump well mechanical seal removing device

Technical Field

The utility model relates to an oil field oil recovery technical field, in particular to screw pump well mechanical seal remove device.

Background

In the process of exploiting the oil field, the screw pump well is the main mechanical oil extraction equipment. Mechanical seals are usually adopted for screw pump wells, and the mechanical seals can fail after being used for a period of time, and if the mechanical seals are not maintained in time, equipment can be damaged, and the environment can be seriously polluted. The mechanical seal needs to be repaired in time. The sealing seat needs to be detached in the maintenance process, and the oil seal is replaced. When the novel sealing machine is replaced, the sealing seat is very easy to damage and trip due to the fact that the bailing hole of the sealing seat is small, and a special tool is not used, so that the sealing seat cannot be taken out.

Disclosure of Invention

The utility model aims to solve the main technical problem that overcome the screw pump well mechanical seal seat that exists among the background art and take out the problem that the difficult very easily damaged the dropout, the utility model aims at providing a screw pump mechanical seal remove device. According to the screw pump mechanical seal taking-out device, acting force is applied in a vibration hammer knocking mode, so that the mechanical seal seat can be taken out smoothly.

The utility model solves the problems by adopting the technical scheme that the screw pump mechanical seal taking-out device comprises a central tube, wherein a small step and a large step are sequentially arranged at the front end of the central tube; the large step of the central tube is sleeved with a spiral pressing cap in a threaded manner, and the large step at the front part of the spiral pressing cap is also sleeved with a connecting sleeve and a conical expansion body in sequence; the spiral pressing cap, the connecting sleeve and the conical expansion body are in close contact with each other; an expandable base is sleeved on the small step at the front end of the central tube in a threaded manner, the expandable base is tightly contacted with the conical expansion body, and the conical expansion body can be seated in the expandable base; a handle is arranged at the rear end of the central pipe, and a vibration part is sleeved on the central pipe; the vibrating member is movable up and down in the center tube body.

Preferably, the conical expansion body is a conical ring with a small lower part and a large upper part.

Preferably, the expandable base thread is opposite to the screw cap thread.

Preferably, the expandable base is provided with a central hole, and a plurality of petals with conical longitudinal sections are uniformly distributed on the periphery of the expandable base by taking the central hole as a center.

Preferably, the diameter of the outer circle of the split is smaller than that of the mechanical sealing seat, and the maximum inner diameter of the inner circle of the conical split is smaller than the maximum outer diameter of the conical expansion body.

Preferably, the vibration component sleeved on the central tube is a vibration hammer.

Preferably, the vibratory hammer is a cylindrical vibratory hammer.

Preferably, the spiral pressing cap is provided with a rotating handle.

Compared with the above background art, the utility model can have following beneficial effect:

1. the mechanical seal taking-out device for the screw pump well can be used for disassembling ring sleeve type parts such as bearings, seals, distance rings and the like in a deep hole of a screw pump reduction box body;

2. the middle ring sleeve type parts in the deep hole of the box body can be dismounted without damage, so that the parts can be conveniently checked and analyzed, the parts without abrasion can be recycled, and other parts on the periphery cannot be damaged in the dismounting process;

3. the contact area between the expandable base and the part is large, the stress is uniform, and the damage is avoided;

4. the expandable base is automatically centered and locked to avoid loosening in the force application and pulling-out process.

The utility model discloses an internal expanding type centre gripping locking mechanism realizes pressing from both sides tightly screw pump mechanical seal seat, exerts the effort through the mode that the vibratory hammer strikeed to take out mechanical seal seat smoothly.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is a structural diagram of the expandable base of the present invention;

fig. 5 is a front view of the conical expansion body of the present invention.

In the figure: 1-a handle; 2-a central tube; 3-a vibrating member; 4-screw pressing cap; 5-connecting sleeves; 6-a conical expansion body; 7-expandable base; 8-mechanical seal seat.

The specific implementation mode is as follows:

the invention will be further explained with reference to the drawings:

as shown in fig. 1, 2 and 3, the mechanical seal extracting device for the screw pump well comprises a central tube 2, wherein a large step with a larger diameter is arranged at the front end of the central tube 2, and a small step with a smaller diameter is arranged at the front end head of the central tube in front of the large step; the spiral pressure cap 4 is sleeved on the large step at the front end of the central tube 2 through threads, and the connecting sleeve 5 and the conical expansion body 6 are further sleeved on the large step at the front part of the spiral pressure cap 4 in sequence; as shown in fig. 5, the conical expansion body 6 is a conical ring with a small lower part and a large upper part; the spiral pressure cap 4, the connecting sleeve 5 and the conical expansion body 6 are tightly contacted with each other; an expandable base 7 is sleeved on the small step at the front end of the central tube 2 in a threaded manner, the expandable base 7 is tightly contacted with a conical expansion body 6, and the conical expansion body 6 can be seated in the expandable base 7; as shown in fig. 4, the expandable base 7 is provided with a central hole, and a plurality of petals with conical longitudinal sections are uniformly distributed on the expandable base 7 by taking the central hole as the center circumference; the diameter of the outer circle of the split is slightly smaller than that of the mechanical sealing seat, and the maximum inner diameter of the inner circle of the conical split is smaller than the maximum outer diameter of the conical expansion body 6; the expandable base 7 can expand in a split manner after the conical expansion body 6 is pressed in, so that the mechanical seal seat 8 is clamped tightly; a handle 1 is arranged at the rear end of the central tube, a vibration component 3 is sleeved on the central tube 2, the vibration component 3 is a cylindrical vibration hammer, and the cylindrical vibration hammer can move up and down on the tube body of the central tube 2; the spiral pressing cap 4 is provided with a rotating handle; but expandable base threaded connection the other end at the center tube, the screw thread is opposite with the spiral pressure cap. In the present invention, the side facing the handle is defined as the rear side, and vice versa as the front side.

The utility model discloses screw pump well mechanical seal remove device's assembly and use do:

firstly, a spiral pressing cap 4 is connected to the front end of a central tube 2 and retreats backwards for a sufficient distance, a connecting sleeve 5 and a conical expansion body 6 are sleeved at the front end of the central tube 2 in sequence and are kept to be tightly attached, and an expandable base 7 is connected to the front end of the central tube 2 in a spiral mode and is screwed.

Secondly, the front end of the assembled tool is inserted into a mechanical sealing base 8, the spiral pressing cap 4 is rotated to move forwards, the connecting sleeve 5 is driven to extrude the conical expansion body 6 to move forwards, the conical surface of the conical expansion body 6 extrudes the expandable base, and the expandable base is split and opened outwards and is in close contact with the inner circular surface of the mechanical sealing base 8.

Thirdly, the handle 1 is held by one hand, the vibration hammer 3 is held by the other hand, the vibration hammer 3 moves back and forth on the central tube 2 to impact the handle 1, and the mechanical sealing seat is knocked out from the inner hole of the box body through impact vibration force.

Fourthly, reversely operating the second step, rotating the spiral pressing cap 4 to move backwards, releasing the pressure of the extrusion connecting sleeve 5, so that the conical expanding body 6 is withdrawn from the expandable base, the expandable base is contracted in a split manner, the mechanical sealing base can be taken down from the expandable base, and the mechanical sealing base is disassembled.

The mechanical seal taking-out device of the screw pump well can disassemble ring sleeve parts such as bearings, seals, distance rings and the like in deep holes of the box body; the middle ring sleeve type parts in the deep hole of the box body can be dismounted without damage, so that the parts can be conveniently checked and analyzed, the worn parts can be recycled, and other peripheral parts cannot be damaged in the dismounting process; the contact area between the expandable base and the part is large, the stress is uniform, and the damage is avoided; the expandable base is automatically centered and locked to avoid loosening in the force application and pulling-out process.

Claims (8)

1. The utility model provides a screw pump well mechanical seal remove device, includes center tube (2), its characterized in that: the front end of the central tube (2) is sequentially provided with a small step and a large step; a spiral pressure cap (4) is sleeved on the large step of the central pipe (2) in a threaded manner, and a connecting sleeve (5) and a conical expansion body (6) are further sleeved on the large step at the front part of the spiral pressure cap (4) in sequence; the spiral pressure cap (4), the connecting sleeve (5) and the conical expansion body (6) are tightly contacted with each other; an expandable base (7) is sleeved on the small step at the front end of the central tube (2) in a threaded manner, and the expandable base (7) is tightly contacted with the conical expansion body (6); the rear end of the central tube is provided with a handle (1), and the central tube is sleeved with a vibration component (3).

2. The screw pump well mechanical seal extraction device of claim 1, wherein: the conical expansion body (6) is a conical ring with a small lower part and a big upper part.

3. The screw pump well mechanical seal extraction device of claim 1, wherein: the thread of the expandable base (7) is opposite to the thread of the spiral pressing cap.

4. The screw pump well mechanical seal extraction device of claim 1, wherein: the expandable base (7) is provided with a central hole, and a plurality of conical split sections with conical longitudinal sections are uniformly distributed on the periphery of the expandable base (7) by taking the central hole as a center.

5. The screw pump well mechanical seal extraction device of claim 4, wherein: the diameter of the outer circle of the conical split is smaller than that of the mechanical sealing seat, and the maximum inner diameter of the inner circle of the conical split is smaller than the maximum outer diameter of the conical expansion body (6).

6. The screw pump well mechanical seal extraction device of claim 1, wherein: the vibration component (3) is a vibration hammer.

7. The screw pump well mechanical seal extraction device of claim 6, wherein: the vibration hammer is a cylindrical vibration hammer.

8. The screw pump well mechanical seal extraction device of claim 1, wherein: the spiral pressing cap (4) is provided with a rotating handle.

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