CN215565810U

CN215565810U - Electronic releasing safety device

Info

Publication number: CN215565810U
Application number: CN202121217487.0U
Authority: CN
Inventors: 王群杰; 金为武; 卢中杰
Original assignee: Wuhan Weilai Technology Co ltd
Current assignee: Wuhan Weilai Technology Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2022-01-18
Anticipated expiration: 2031-06-02

Abstract

The utility model discloses an electronic releasing safety device which comprises an upper joint, a shell, a lower joint, a shaft plug, a release lever, a supporting block and a driving lever, wherein the upper joint is fixedly connected with the shell, and the lower end of the upper joint extends into the shell; the lower part of the upper joint is provided with an elastic claw, and the inner cavity of the elastic claw is provided with a curved surface structure; the lower joint is provided with a limiting boss, and the inner wall of the elastic claw is provided with a supporting step; a limiting groove is formed in the inner wall of the lower joint, a limiting through hole is formed in the side wall of the shaft plug, and a limiting ball is arranged in the limiting through hole; the release lever is provided with a small end and a large end, and a gap is formed between the small end and the shaft plug; a supporting block is arranged on the shaft plug and is in contact with the curved surface structure so as to be used for supporting the elastic claw to separate the limiting boss from the supporting step; an oil filling hole is arranged on the shell; the lower end of the driving rod extends into the upper joint. The limiting ball can fix the shaft plug, so that the shaft plug cannot move downwards at will, the upper joint and the lower joint cannot be disconnected, the releasing action is controllable, and accidents are avoided.

Description

Electronic releasing safety device

Technical Field

The utility model belongs to the field of electronic releasing facilities, and particularly relates to an electronic releasing safety device.

Background

The perforating gun is needed to be used in the oil field perforating operation process, and the casing can be deformed after the perforating gun is perforated, so that the perforating tool string is blocked in the process of lifting. In case meet emergent treatment of card is exactly to exert certain pulling force for the armoured cable and force halter torpedo department to break off because of artificial tearing, but halter torpedo department is hardly accurate pulled apart in the horizontal well, often causes the cable to be pulled apart to the construction progress that influences when leading to construction risk greatly increased. In order to control the break point after the card is encountered, a controllable releasing tool is generally adopted for realizing;

in the prior art, an electronic release can be used for realizing the release function, but the electronic release realizes the disconnection function by utilizing the well-conducting fluid, and the electronic release can be disconnected once an instrument leaks, and the unpredictable effect exists in the process of instrument leakage, so that the uncontrollable risk exists.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks or needs for improvement in the prior art, the present invention provides an electronic release safety device that can solve the problem of release disconnection caused by leakage of an electronic release, so that the disconnection action is fully controlled.

To achieve the above object, according to the present invention, there is provided an electronic release safety device, comprising an upper joint, a housing, a lower joint, a shaft plug, a release lever, a stay block, and a driving lever, wherein:

The upper joint is fixedly connected with the shell, and the lower end of the upper joint extends into the shell;

the lower part of the upper joint is an openable elastic claw, and an inner cavity of the elastic claw is provided with a curved surface structure with a large upper part and a small lower part;

the lower joint is provided with a limiting boss, the inner wall of the elastic claw is provided with a supporting step, and the limiting boss is placed on the supporting step, so that the lower joint is hung on the elastic claw;

the lower end of the shaft plug extends into the inner cavity of the lower joint, a limiting groove is formed in the inner wall of the lower joint, a limiting through hole is formed in the side wall of the shaft plug at a position corresponding to the limiting groove, and a limiting ball capable of entering and exiting the limiting groove is arranged in the limiting through hole;

the lower end of the release rod extends into the inner cavity of the shaft plug and is connected with the shaft plug in a sliding mode, the release rod is provided with a small end and a large end used for limiting the limiting ball in the limiting groove, and a gap facilitating the limiting ball to leave the limiting groove is formed between the small end and the shaft plug;

the shaft plug is provided with the supporting block, and the supporting block is in contact with the curved surface structure and is used for supporting the elastic claw to separate the limiting boss from the supporting step;

An oil filling hole which can be opened and closed is formed in the upper joint and used for injecting external well fluid into the inner cavity of the shell, wherein the injected external well fluid is located in a space above the shaft plug;

the lower end of the driving rod extends into the upper joint and is used for pushing the release rod to move downwards.

Preferably, the shaft plug further comprises a limiting press ring installed on the shaft plug, the lower end of the elastic claw extends into the limiting press ring, and the limiting press ring clamps the lower end of the elastic claw, so that the elastic claw keeps a closed state to clamp the limiting boss.

Preferably, the limiting compression ring is mounted on the shaft plug through a limiting pin shaft, and a channel which is convenient for the limiting pin shaft to move up and down is arranged on the lower joint.

Preferably, the lower joint is provided with an upper stop table and a lower stop table at positions corresponding to the channels, so as to limit the displacement of the limit pin shaft moving up and down.

Preferably, the outer shell is fixedly connected to the outer wall of the upper connector through a threaded ring, the threaded ring is in interference fit with the upper connector, and the outer wall of the threaded ring is provided with threads for being connected with the outer shell.

Preferably, the outer wall of the shaft plug is provided with a limit step, the supporting block penetrates through the shaft plug and rests on the limit step, and the locking nut is in threaded connection with the shaft plug and presses the supporting block on the limit step.

Preferably, the drive rod is in sealing engagement with the upper fitting.

Preferably, the shaft plug is in sealing engagement with the lower coupling.

Preferably, the release lever is in sealing engagement with the shaft plug.

Preferably, the limiting groove is a ball groove.

In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:

1) the connection and disconnection of the upper joint and the lower joint are controlled by a release ejector rod and a shaft plug, the shaft plug and the lower joint are fixed by a limit ball, the limit ball is controlled by a large end and a small end of a release lever to enter and exit from a limit groove, the release lever is controlled by a driving lever, so that the disconnection of the electronic releasing is completed by controlling the driving lever by ground workers, when the driving lever is not controlled to move, even if well fluid leaks into a shell, the limit ball can still fix the shaft plug, the shaft plug cannot move downwards, the upper joint of the upper part and the lower joint of the lower part cannot be disconnected and cannot complete releasing, releasing action is controllable, and accidents are avoided.

2) The shaft plug is also provided with the limiting compression ring for hooping the elastic claw, so that the lower joint can clamp the limiting boss all the time, and the limiting compression ring cannot be separated from the elastic claw as long as the shaft plug does not move downwards, so that the reliable connection of the upper joint and the lower joint is ensured, and the controllability of releasing action is high.

Drawings

FIG. 1 is a schematic representation of the electronic release of the present invention prior to disconnection of the upper and lower connectors;

fig. 2 is a schematic diagram of the electronic release of the present invention after the upper and lower connectors are disconnected.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 and 2, the electronic releasing safety device comprises an upper joint 1, a shell 3, a lower joint 4, a shaft plug 9, a release rod 6, a supporting block 8 and a driving rod 5 which are vertically arranged, wherein:

the utility model discloses a pipe fitting, including casing 3, top connection 1 with 3 fixed connection of casing, casing 3 is preferred through threaded ring 2 fixed connection the outer wall of top connection 1, and threaded ring 2 with 1 interference fit of top connection, the outer wall of threaded ring 2 be provided with be used for with the screw thread that casing 3 is connected, casing 3 is screwed up on the screw thread of 2 outer walls of threaded ring, the lower extreme of top connection 1 stretches into in the casing 3.

The lower part of the upper joint 1 is an openable elastic claw which has elasticity and can be opened or closed under the action of external force, and the inner cavity of the elastic claw has a curved surface structure with a large upper part and a small lower part.

The lower joint 4 is provided with a limiting boss, the inner wall of the elastic claw is provided with a supporting step, and the limiting boss is placed on the supporting step, so that the lower joint 4 is hung on the elastic claw, and the connection of the upper joint 1 and the lower joint 4 is realized.

The lower end of the shaft plug 9 extends into the inner cavity of the lower joint 4, the shaft plug 9 is in sealing fit with the lower joint 4, and preferably the sealing fit is realized through a sealing ring. A limiting groove 13 is formed in the inner wall of the lower joint 4, a limiting through hole 14 is formed in the side wall of the shaft plug 9 at a position corresponding to the limiting groove 13, a limiting ball 10 capable of entering and exiting the limiting groove 13 is arranged in the limiting through hole 14, after the limiting ball 10 enters the limiting groove 13, one part of the limiting ball 10 is located in the limiting groove 13, the other part of the limiting ball 10 is located in the limiting through hole 14, and the shaft plug 9 and the lower joint 4 can be locked by the limiting ball 10, so that relative movement cannot occur between the shaft plug 9 and the lower joint; the limiting groove 13 is a ball groove, and the volume of the ball groove is about 1/3 of a whole ball with the same radius as the ball groove.

The upper joint 1 is provided with an openable oil filling hole for injecting external well fluid into the inner cavity of the shell 3, the opening and closing of the oil filling hole can be controlled by ground personnel, and preferably, an electric control device can be adopted to control the opening and closing. Wherein the injected external well fluid is located above the shaft plug 9 for pushing the shaft plug 9 downwards.

The lower end of the release rod 6 extends into the inner cavity of the shaft plug 9 and is connected with the shaft plug in a sliding way, the release rod 6 is in sealing fit with the shaft plug 9, preferably, the sealing fit is realized through a sealing ring, and the sealing ring is arranged to ensure that the release rod 6 and the shaft plug 9 have no relative displacement under the condition of no external force; the release lever 6 is preferably a stepped shaft, and is provided with a small end 15 and a large end 16 used for limiting the limiting ball 10 in the limiting groove 13, and when the large end 16 is matched with the limiting through hole 14 to limit the limiting ball 10 in the limiting groove 13, the shaft plug 9 and the lower connector 1 cannot move relatively; a gap 17 exists between the small end 15 and the shaft plug 9 so that the limiting ball 10 leaves the limiting groove 13. Due to the existence of the gap 17, the moving stroke of the limit ball 10 in the limit through hole 14 is increased, when the shaft plug 9 and the lower joint 4 move relatively, the shaft plug 9 generates a force for pushing the limit ball 10 outwards to the limit groove 13 on the limit ball 10, so that the limit ball 10 can leave the limit groove 13 and enter the limit through hole 14, and a part of the limit ball 10 can extend into the gap 17, so that the locking of the shaft plug 9 and the lower joint 4 can be completely released, and the shaft plug 9 and the lower joint 4 can move relatively. In addition, as an optimization, the limiting through hole 14 can be made into an inclined hole, so that the limiting ball 10 can slide out of the limiting groove 13 quickly under the self-weight.

The shaft plug 9 is provided with the supporting block 8, and the supporting block 8 is in contact with the curved surface structure of the elastic claw so as to be used for supporting the elastic claw to separate the limiting boss from the supporting step; the outer wall of the shaft plug 9 is provided with a limiting step 20, the supporting block 8 is arranged on the shaft plug 9 in a penetrating mode and rests on the limiting step 20, and the locking nut 7 is connected to the shaft plug 9 in a threaded mode and presses the supporting block 8 on the limiting step 20 in a pressing mode.

The lower end of the driving rod 5 extends into the upper joint 1 to push the release rod 6 to move downwards, and the driving rod 5 is in sealing fit with the upper joint 1, preferably through a sealing ring.

The utility model also comprises a limiting press ring 11 arranged on the shaft plug 9, the lower end of the elastic claw extends into the limiting press ring 11, and the limiting press ring 11 clamps the lower end of the elastic claw to limit the lower end of the elastic claw, so that the elastic claw cannot be opened randomly, and the elastic claw can be always kept in a closed state to clamp the limiting boss. The limiting compression ring 11 is installed on the shaft plug 9 through a limiting pin shaft 12, a channel which is convenient for the limiting pin shaft 12 to move up and down is arranged on the lower joint 4, an upper blocking platform 18 and a lower blocking platform 19 are arranged at positions corresponding to the channel and used for limiting the displacement of the limiting pin shaft 12 which moves up and down, the upper blocking platform 18 and the lower blocking platform 19 can ensure that the shaft plug 9 and the lower joint 4 cannot be separated after releasing actions, and the upper blocking platform 18 and the lower blocking platform can still be connected into a whole to move together.

When the lower part of the electronic releasing is connected with an instrument well, releasing operation is needed, the driving rod 5 is controlled by ground staff to move downwards, the driving rod drives the releasing rod 6 of the driving rod 5 to move downwards, after the releasing rod 6 moves downwards for a certain distance, the large end 16 of the releasing rod 6 releases the limit of the limiting ball 10, a gap is formed between the small end 15 and the inner wall of the shaft plug 9, the limiting ball 10 can leave from the limiting groove 13 under the self weight condition, and a part of the limiting ball 10 enters the gap 17 between the inner hole of the shaft plug 9 and the releasing rod 6.

Then the plug is opened, external well liquid is introduced into the shell 3 through an oil injection hole in the shell 3, the pressure of the well liquid pushes the shaft plug 9 to move downwards, the shaft plug 9 drives the limiting pressing ring 11 and the supporting block 8 connected with the shaft plug to move downwards together, the limiting pressing ring 11 can be separated from the elastic claw, the supporting block 8 continues to move downwards to prop open the elastic claw at the lower part of the upper joint 1, the limiting boss on the lower joint 4 is separated from the supporting step on the elastic claw, so that the upper joint 1 and the lower joint 4 are separated, when the pressure of the well liquid injected into the shell 3 is balanced with the pressure of the external well liquid, the cable is lifted on the ground, and the upper joint 1 and the lower joint 4 can be completely separated.

When the well is not blocked and the shell 3 of the electronic releasing is leaked, external well fluid enters the shell 3, the pressure of the well fluid acts on the shaft plug 9 downwards, the release lever 6 does not move downwards, the limiting ball 10 is clamped in the hemispherical groove to lock the shaft plug 9 and the lower connector 4, the shaft plug 9 cannot move, the limiting pressing ring 11 and the shaft plug 9 are connected together and cannot move, the limiting pressing ring 11 locks the elastic claw at the lower part of the upper connector 1 and cannot be opened, the lower connector 4 and the upper connector 1 cannot be separated, and uncontrolled disconnection cannot occur.

It will be understood that the terms "central," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the utility model and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered limiting of the utility model.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the utility model, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an electron release safeties, its characterized in that includes top connection, shell, lower clutch, axle stopper, release lever, bracer and actuating lever, wherein:

2. The electronic release safety device of claim 1, further comprising a limit tab mounted on the plug, wherein the lower end of the resilient finger extends into the limit tab, and wherein the limit tab grips the lower end of the resilient finger to maintain the resilient finger in a closed position to grip the limit boss.

3. The electronic release safety device of claim 2, wherein the limit compression ring is mounted on the plug by a limit pin, and the lower joint is provided with a groove for facilitating the up-and-down movement of the limit pin.

4. The electronic release safety device of claim 3, wherein the lower joint is provided with an upper stop and a lower stop at positions corresponding to the slots for limiting the displacement of the limit pin in the up and down movement.

5. The electronic release safety device of claim 1, wherein the housing is fixedly attached to the outer wall of the top sub by a threaded ring, and the threaded ring is in interference fit with the top sub, the outer wall of the threaded ring being provided with threads for attachment to the housing.

6. The electronic release safety device of claim 1, wherein the outer wall of the shaft plug is provided with a limit step, the brace member is threaded on the shaft plug and rests on the limit step, and the lock nut is threaded on the shaft plug and presses the brace member against the limit step.

7. The electronic release safety device of claim 1, wherein the drive rod is in sealing engagement with the top sub.

8. The electronic release safety device of claim 1, wherein the shaft plug is in sealing engagement with the lower connector.

9. The electronic release safety device of claim 1, wherein the release lever is in sealing engagement with the shaft plug.

10. The electronic release safety device of claim 1, wherein the restraint slot is a ball slot.