CN219504684U - Pressure-bearing disc replacer of downhole logging instrument - Google Patents

Abstract

The utility model discloses a pressure-bearing disc disassembling and assembling device of an underground logging instrument, which comprises a main body, wherein an axial cavity is arranged in the main body, a limiting part and a supporting rod are arranged in the cavity, the supporting rod can slide behind the limiting part in the cavity, a threaded rod penetrating through the limiting part is arranged at the front end of the supporting rod, a limiting bulge is arranged on the outer wall of the supporting rod, a key slot, a fixed baffle ring, a threaded sleeve and a movable baffle ring which can rotate around the outer wall of the main body are arranged on the outer wall of the main body, the threaded sleeve is limited between the fixed baffle ring and the movable baffle ring, a limiting screw fixes the movable baffle ring on the outer wall of the main body, and the head part of the limiting screw stretches into the cavity and is blocked behind the limiting bulge of the supporting rod. The disassembling and assembling device disclosed by the utility model is compact in structure and reasonable in design, and the disassembly and the assembly of the pressure-bearing disc are realized by using a few parts. Particularly, bearings are arranged in front of and behind the threaded sleeve, so that the threaded sleeve rotates very lightly, and the bearing disc is stably detached and installed.

Description

Pressure-bearing disc replacer of downhole logging instrument

Technical Field

The utility model relates to the field of petroleum logging, in particular to a pressure-bearing disc replacer of an underground logging instrument in the field.

Background

A pressure-bearing disc connector (simply referred to as a "pressure-bearing disc" in the present utility model) is generally installed at the lower joint of the ultra-high temperature downhole logging tool, so as to prevent the downhole mud from polluting the dyeing and finishing string tool. The bearing disc is generally provided with two sealing rings, so that the mounting and the dismounting have small axial friction resistance, the bearing disc belongs to a precision part and cannot bear local impact force, and the mounting and the dismounting are performed stably by using a special tool.

The existing pressure-bearing disc disassembling and installing tool can only be installed and not disassembled, and can only be disassembled and not installed, and although the existing pressure-bearing disc disassembling and installing tool can also be installed and not disassembled, the existing pressure-bearing disc disassembling and installing tool is relatively laborious and inconvenient to use.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a pressure-bearing disc replacer for an underground logging instrument, which is light and convenient to use, saves labor, and can be installed and disassembled.

In order to solve the technical problems, the utility model adopts the following technical scheme:

in a pressure-bearing disc replacer for a downhole logging tool, the improvement comprising: including the main part, set up axial cavity in the main part, set up spacing portion and bracing piece in the cavity, this bracing piece can slide after the spacing portion in the cavity, the threaded rod of spacing portion is passed in the front end installation of bracing piece, set up spacing arch on the outer wall of bracing piece, set up the keyway on the outer wall of main part, fixed baffle ring, can be around the swivel nut and the activity baffle ring of main part outer wall, the swivel nut is spacing between fixed baffle ring and activity baffle ring, stop screw is fixed the activity baffle ring on the main part outer wall, and stop screw's head stretches into in the cavity and keep off after the spacing arch of bracing piece.

Further, the supporting rod is connected with the threaded rod through threads, and thread glue is smeared at the thread to fasten the supporting rod and the threaded rod.

Further, a shaft is inserted into the rear portion of the support rod, and the shaft is fixed to the support rod by a pin.

Further, bearings are arranged between the threaded sleeve and the fixed baffle ring and between the threaded sleeve and the movable baffle ring.

Further, the bearing is a thrust needle bearing.

Further, a ring-shaped bulge is arranged on the outer wall of the screw sleeve.

The beneficial effects of the utility model are as follows:

the disassembling and assembling device disclosed by the utility model is compact in structure and reasonable in design, and the disassembly and the assembly of the pressure-bearing disc are realized by using a few parts. Particularly, bearings are arranged in front of and behind the threaded sleeve, so that the threaded sleeve rotates very lightly, and the bearing disc is stably detached and installed.

Drawings

FIG. 1 is a schematic view of a detacher according to embodiment 1 of the present utility model;

FIG. 2 is a schematic view of the mounting/dismounting device according to embodiment 1 of the present utility model after being connected to a pressure-bearing plate;

FIG. 3 is a cross-sectional view of the detacher of embodiment 1 of the present utility model coupled to a pressure plate;

FIG. 4 is a cross-sectional view of a pressure plate installed into a downhole tool joint using the detacher of example 1 of the present utility model.

Reference numerals: 1-main body, 2-bearing, 3-swivel nut, 4-movable baffle ring, 5-supporting rod, 6-threaded rod, 7-limit screw, 8-shaft, 9-pin, 10-bearing disk, 11-O-shaped sealing ring, 12-joint, 13-key slot, 14-key slot and 15-thread.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Embodiment 1, as shown in fig. 1, this embodiment discloses a pressure-bearing plate replacer of downhole logging instrument, including main part 1, set up axial cavity in the main part, set up spacing portion and bracing piece 5 in the cavity, this bracing piece can slide after the spacing portion in the cavity, install the threaded rod 6 that passes spacing portion at the front end of bracing piece, set up spacing arch on the outer wall of bracing piece, set up keyway 13 on the outer wall of main part, fixed baffle ring, can rotate around main part outer wall swivel nut 3 and movable baffle ring 4, the swivel nut is spacing between fixed baffle ring and movable baffle ring, stop screw 7 is fixed movable baffle ring on main part outer wall, and stop screw's head stretches into in the cavity and keeps off after spacing arch of bracing piece, make stop screw play spacing effect to the bracing piece, let the bracing piece not drop in main part cavity all the time.

In the embodiment, the supporting rod is connected with the threaded rod through threads, and the threaded rod is fastened by smearing thread glue on the threads. A shaft 8 is inserted at the rear of the support bar and is fixed to the support bar by means of a pin 9. Bearings 2 are arranged between the threaded sleeve and the fixed baffle ring and between the threaded sleeve and the movable baffle ring. In the process of rotating the screw sleeve, the bearing can reduce friction between the screw sleeve and the main body, between the screw sleeve and the fixed baffle ring and between the screw sleeve and the movable baffle ring, and the rotating motion of the screw sleeve is converted into the front-back motion of the main body, so that a thrust needle bearing with smaller volume can be selected. The outer wall of the screw sleeve is provided with a ring-shaped bulge which is used as a handle for rotating the screw sleeve.

The bearing plate 10 is generally provided with a key at each end for positioning, an O-ring 11 is mounted on the bearing plate, and a threaded hole is provided at the center of one side end face.

When the pressure bearing disc is mounted, as shown in fig. 2 and 3, the key of the pressure bearing disc 10 is inserted into the key slot 13 of the main body, the rotating shaft 8 drives the supporting rod 5 and the threaded rod 6 to rotate, the threads of the threaded rod 6 are screwed into the threaded holes of the pressure bearing disc until the supporting rod touches the limiting part to stop, and at the moment, the pressure bearing disc is fixed on the main body of the dismounting device. As shown in fig. 4, the pressure-bearing disc and the dismounting device are inserted into the inner hole of the downhole logging tool joint 12, the pressure-bearing disc is slowly pushed in, the key of the pressure-bearing disc is inserted into the key groove 14 of the joint until the threaded sleeve 3 touches the thread 15 of the joint, the threaded sleeve is rotated, the main body and the pressure-bearing disc are driven to advance towards the inside of the joint along with the threaded sleeve screwed into the joint along with the threaded sleeve until the threaded sleeve is completely screwed into the threaded sleeve, the pressure-bearing disc is mounted in place at the moment, the threaded rod is separated from the pressure-bearing disc by the anticlockwise rotating shaft, and the pressure-bearing disc mounting can be completed by taking out the dismounting device by anticlockwise rotating the threaded sleeve.

When the bearing disc is dismounted, the key of the main body key groove aligned with the bearing disc is pushed into the dismounting device to be in threaded contact with the threaded sleeve and the joint, the threaded sleeve is completely screwed in, the threaded shaft is screwed into the threaded hole of the bearing disc, the threaded sleeve is rotated anticlockwise, the main body is driven to withdraw along with the withdrawal of the threaded sleeve, the main body drives the supporting rod, and the supporting rod is connected with the threaded shaft, so that the bearing disc can be taken out.

Claims (6)

1. The utility model provides a well logging instrument pressure-bearing dish replacer which characterized in that: including the main part, set up axial cavity in the main part, set up spacing portion and bracing piece in the cavity, this bracing piece can slide after the spacing portion in the cavity, the threaded rod of spacing portion is passed in the front end installation of bracing piece, set up spacing arch on the outer wall of bracing piece, set up the keyway on the outer wall of main part, fixed baffle ring, can be around the swivel nut and the activity baffle ring of main part outer wall, the swivel nut is spacing between fixed baffle ring and activity baffle ring, stop screw is fixed the activity baffle ring on the main part outer wall, and stop screw's head stretches into in the cavity and keep off after the spacing arch of bracing piece.

2. The downhole tool pressure disc remover according to claim 1, wherein: the support rod is connected with the threaded rod through threads, and thread glue is smeared at the thread to fasten the support rod and the threaded rod.

3. The downhole tool pressure disc remover according to claim 1, wherein: a shaft is inserted into the tail of the support rod, and the shaft is fixed on the support rod through a pin.

4. The downhole tool pressure disc remover according to claim 1, wherein: bearings are arranged between the threaded sleeve and the fixed baffle ring and between the threaded sleeve and the movable baffle ring.

5. The downhole tool pressure disc remover according to claim 4, wherein: the bearing is a thrust needle bearing.

6. The downhole tool pressure disc remover according to claim 1, wherein: the outer wall of the screw sleeve is provided with a ring-shaped bulge.