CN220839996U

CN220839996U - Valve seat dismounting device for shale oil sand control valve

Info

Publication number: CN220839996U
Application number: CN202322598805.8U
Authority: CN
Inventors: 孙庆红; 王传彪; 陈波; 刘长君; 王天柱; 胡慧莹
Original assignee: Shandong Weima Equipment Technology Co ltd; Shandong Weima Fluid Control System Co ltd; Shandong Hongfeng Intelligent Equipment Co ltd
Current assignee: Shandong Weima Equipment Technology Co ltd; Shandong Weima Fluid Control System Co ltd; Shandong Hongfeng Intelligent Equipment Co ltd
Priority date: 2023-09-25
Filing date: 2023-09-25
Publication date: 2024-04-26
Anticipated expiration: 2033-09-25

Abstract

The utility model relates to a valve seat dismounting device for a shale oil sand control valve, which relates to the technical field of valves and comprises a screw, wherein an expansion mandrel is arranged on the outer side of one end of the screw, an expansion sleeve is arranged on the outer side of the expansion mandrel, a plurality of nuts are further arranged on the screw, and the nuts are distributed at two ends of the screw.

Description

Valve seat dismounting device for shale oil sand control valve

Technical Field

The utility model relates to the technical field of valves, in particular to a valve seat dismounting device for a shale oil sand control valve.

Background

The existing gate valve has large fit clearance between the valve seat and the valve cavity, and the valve seat can be disassembled by lightly knocking by using a rubber hammer or a wood hammer when the valve seat is disassembled. However, as another sand control gate valve, the fit clearance between the valve seat and the valve cavity is small, the pressure is high during use, stress can be generated in the valve seat, and the valve seat cannot be easily taken out from the valve cavity by using a knocking method after pressure relief.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model aims to provide the valve seat dismounting device for the shale oil sand control valve, which can solve the technical problems that the fit clearance between the valve seat of the sand control gate valve and a valve cavity is small, the pressure is high during use, the stress can be generated in the valve seat, and the valve seat can not be easily taken out from the valve cavity by a knocking method after pressure relief.

In order to achieve the above object, the present utility model provides the following technical solutions:

The utility model provides a shale oil sand control valve is with disk seat dismounting device, dismounting device includes the screw rod, screw rod one end outside is equipped with the tight dabber that expands, the outside of the tight dabber that expands is equipped with the tight cover that expands, still be equipped with a plurality of nuts on the screw rod, a plurality of the nut distributes at the both ends of screw rod.

Preferably, the number of the nuts is five, two of the nuts are arranged at one end of the screw rod far away from the expansion sleeve, the other three nuts are arranged at one end close to the expansion sleeve, two of the three nuts are arranged at the inner side of the expansion sleeve, and one of the three nuts is arranged at the outer side of the expansion sleeve.

Preferably, the expansion sleeve adopts an umbrella-shaped metal thin-wall structure with a deformation function, a plurality of through holes are formed in the thin wall at equal intervals, and conical holes are formed in the expansion sleeve.

Preferably, the metal is 45# steel.

Preferably, the expansion mandrel adopts a revolving body with the same taper as the inner part of the expansion sleeve, and the middle part of the expansion mandrel is provided with a central hole.

Compared with the prior art, the utility model has the beneficial effects that: when the dismounting device is used for dismounting the valve seat from the high-pressure sand control gate valve with small matching clearance between the valve seat and the valve cavity, the valve seat is not easy to damage, and the service life of the valve seat is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the expansion sleeve structure in the present utility model;

FIG. 3 is a schematic view of the structure of the expanding mandrel in the present utility model;

Fig. 4 is a use state diagram of the present utility model.

Reference numerals illustrate:

1-screw rod, 2-expansion core shaft, 3-expansion sleeve, 4-nut and 5-through hole.

Detailed Description

The utility model will now be described in detail, by way of example, with reference to the accompanying drawings, wherein it is evident that the embodiments described are only some, but not all, of the embodiments of the utility model.

As shown in fig. 1 to 4, the utility model provides a valve seat dismounting device for a shale oil sand control valve, which comprises a screw 1, wherein an expansion mandrel 2 is arranged at the outer side of one end of the screw 1, an expansion sleeve 3 is arranged at the outer side of the expansion mandrel 2, a plurality of nuts 4 are further arranged on the screw 1, and the nuts 4 are distributed at two ends of the screw 1. During assembly, the screw rod 1 penetrates through the expansion mandrel 2 and the expansion sleeve 3, the expansion sleeve 3 is clamped outside the expansion mandrel 2 and is placed in an inner through hole of the valve seat 6, the expansion mandrel 2 is tightly pressed by the nuts 4 at two ends, the expansion sleeve 3 is tightly pressed on the inner wall of the valve seat 6, and then the screw rod 1 is axially knocked to withdraw the valve seat 6.

Further, in this embodiment, the number of the nuts 4 is five, two of the nuts 4 are disposed at one end of the screw 1 far away from the expansion sleeve 3, the other three nuts 4 are disposed at one end near the expansion sleeve 3, two of the three nuts 4 are disposed inside the expansion sleeve 3, one nut is disposed outside the expansion sleeve 3, and the structure of the five nuts 4 is favorable for achieving the purpose of avoiding loosening of the expansion mandrel 2.

Further, in this embodiment, the expansion sleeve 3 adopts an umbrella-shaped metal thin-wall structure with a deformation function, and preferably, the metal is 45# steel; eight through holes 5 are formed in the thin wall of the expansion sleeve 3 at equal intervals, and the eight through holes 5 can reduce stress and prevent stress concentration when in expansion use, so that the expansion sleeve is easier to expand; the expansion sleeve 3 is internally provided with a conical hole, and the conical hole is arranged to facilitate the expansion mandrel 2 to slide in more easily.

Further, in this embodiment, the expansion mandrel 2 adopts a rotator with the same taper as that of the expansion sleeve 3, and the structural design is matched with the expansion sleeve 3 to facilitate the entry and exit, so as to have a righting effect; the central hole is formed in the middle of the expansion mandrel 2, so that the screw 1 can conveniently pass through the central hole.

The disassembly principle is as follows: when the valve seat 6 in the valve body 5 is disassembled, the screw rod 1, the expansion mandrel 2 and the expansion sleeve 3 are sequentially connected and then are installed in a through hole of the valve seat 6, the nut 4 of the disassembling device is fastened through a middle cavity of the valve body, the expansion sleeve 3 is tightly pressed on the inner wall of the valve seat 6, and then an axial force F acts on the expansion sleeve to disassemble the valve seat 6.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, shall cover the scope of the present utility model by equivalent substitution or modification according to the technical scheme of the present utility model and the application concept thereof.

Claims

1. The utility model provides a shale oil sand control valve is with disk seat dismounting device which characterized in that: the dismounting device comprises a screw (1), wherein an expansion mandrel (2) is arranged outside one end of the screw (1), an expansion sleeve (3) is arranged outside the expansion mandrel (2), a plurality of nuts (4) are further arranged on the screw (1), and the nuts (4) are distributed at two ends of the screw (1).

2. The valve seat dismounting device for a shale oil sand control valve of claim 1, wherein: the number of the nuts (4) is five, two of the nuts (4) are arranged at one end of the screw (1) far away from the expansion sleeve (3), the other three nuts (4) are arranged at one end close to the expansion sleeve (3), and in the three nuts (4), two nuts are arranged at the inner side of the expansion sleeve (3), and one nut is arranged at the outer side of the expansion sleeve (3).

3. The valve seat dismounting device for a shale oil sand control valve of claim 1, wherein: the expansion sleeve (3) adopts an umbrella-shaped metal thin-wall structure with a deformation function, a plurality of through holes (5) are formed in the thin wall at equal intervals, and conical holes are formed in the expansion sleeve (3).

4. The valve seat dismounting device for a shale oil sand control valve of claim 3, wherein: the metal is 45# steel.

5. The valve seat dismounting device for a shale oil sand control valve of claim 1, wherein: the expansion mandrel (2) adopts a revolving body with the same taper as the inner taper of the expansion sleeve (3), and a central hole is formed in the middle of the expansion mandrel (2).