CN211348050U

CN211348050U - Wellhead corrosion detection device applied to gas production tree and oil production tree

Info

Publication number: CN211348050U
Application number: CN201921828854.3U
Authority: CN
Inventors: 王钰淞; 张景锋; 谌梁
Original assignee: Sichuan Domal Technology Co ltd
Current assignee: Sichuan Domal Technology Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-08-25
Anticipated expiration: 2029-10-29

Abstract

The application relates to the field of corrosion detection of gas production trees or Christmas trees and particularly relates to a wellhead corrosion detection device applied to gas production trees and Christmas trees. The device comprises a circumferential chain structure, a detection structure and an axial coding assembly, wherein the detection structure is provided with an ultrasonic corrosion detection probe which can move on the outer surface of a detected valve neck or a detected valve joint along the direction vertical to the circumferential chain structure, and the height of the probe vertical to the outer surface is adjustable; a circumferential encoder is also provided in the circumferential chain structure. The wellhead corrosion detection device applied to the gas production tree and the oil production tree is convenient to operate, can record the axial movement track and the circumferential movement track of the probe simultaneously, and records corrosion detection data.

Description

Wellhead corrosion detection device applied to gas production tree and oil production tree

Technical Field

The application relates to the field of wellhead corrosion detection of gas production trees of gas wells or oil wells, in particular to a wellhead corrosion detection device applied to gas production trees and oil production trees.

Background

The gas production tree or oil production tree wellhead device is important ground equipment for controlling production of a gas production well or an oil production well, and mainly comprises a casing head, a tubing head and the gas production tree or the oil production tree. The wellhead device of the gas production tree or the oil production tree controls the production condition of the gas production well or the oil production well, mainly monitors and adjusts the pressure of the production wellhead and the flow of the gas production well or the oil production well, and can be used for operations such as acidizing, fracturing, water injection, testing and the like. The gas production tree and the Christmas tree are mainly formed by combining a large cross joint, a small cross joint and a valve, wherein corrosion and leakage of the valves of the gas production tree and the Christmas tree are main reasons of accidents of the gas production tree and the Christmas tree, and the valves need to be subjected to nondestructive testing regularly according to relevant standards. The neck parts on both sides of the valve should detect at least 8 parts, and each neck should detect at least 4 regions. The neck parts on the two sides of the valve are subjected to single-point thickness measurement by adopting a single-point thickness gauge and are recorded and detected, and the neck parts on the two sides of the valve are subjected to detection on the inner wall thickness variation distribution condition by adopting a phased array ultrasonic detector. According to the requirements, the detection precision of the wall thickness needs to reach 0.1mm, and the detection precision of the inner wall defects and the flange sealing surface defects needs to reach 1mm x 1 mm.

Although the prior art also has a detection device for the pipeline and the shaft body workpiece, the structure of the device has poor applicability when being applied to wellhead corrosion detection of gas production trees and oil production trees, for example, the device cannot simultaneously record axial recording movement tracks and circumferential recording movement tracks, has the defects of complex overall structure, inconvenient operation and small application range, and cannot meet the requirement of actual detection.

SUMMERY OF THE UTILITY MODEL

The utility model provides a wellhead corrosion detection device applied to gas production trees and oil production trees, which is characterized by comprising a circumferential chain structure, a detection structure and an axial coding component, wherein the circumferential chain structure is an annular structure, rollers are arranged on two sides of the circumferential chain structure, the circumferential chain structure comprises a detection chain link and a circumferential coding chain link, the detection structure is connected with one side of the detection chain link, the other side of the detection chain link is connected with the axial coding component, the detection structure comprises an ultrasonic corrosion detection probe, and the circumferential coding chain link comprises a circumferential encoder; the circumference chain structure is along circumference rotary motion, and ultrasonic corrosion test probe is along perpendicular circumference chain structure's direction concertina movement, ultrasonic corrosion test probe is flexible structure.

Optionally, the circumferential chain structure comprises a common chain link and an inner diameter adjusting chain link, and the common chain link, the detecting chain link, the inner diameter adjusting chain link and the circumferential encoding chain link are connected in an articulated manner.

Optionally, the inner diameter adjusting chain link is provided with two sections, the two sections of inner diameter adjusting chain links are respectively provided with a threaded hole, and the two sections of inner diameter adjusting chain links are connected with the two threaded holes through connecting bolts in a matching manner.

Optionally, the inner diameter adjusting chain link is provided with two sections, wherein the head of one section of the inner diameter adjusting chain link is provided with a buckle part, the tail of the other section of the inner diameter adjusting chain link is provided with a multi-stage buckle interface, the multi-stage buckle interface is provided with a plurality of connecting positions, and the buckle part and the multi-stage buckle interface are connected in a matching manner at different connecting positions.

Optionally, the quick-acting chain type chain joint comprises a quick bolt, at least one chain link in the common chain link, the detection chain link, the inner diameter adjusting chain link and the circumferential encoding chain link is hinged with an adjacent chain link through the quick bolt, the quick bolt is taken down, and the circumferential chain type structure is disconnected.

Optionally, the detection structure comprises a transition piece, a guide rail, a transition rod and an end cover, the guide rail is fixedly connected with the detection chain link, and the transition piece is connected with the guide rail in a sliding manner; the transition rod is connected with the transition piece and the end cover, and the ultrasonic corrosion detection probe is connected below the end cover.

Optionally, the transition piece is slidably connected with the transition rod, the end cover is fixedly connected with the transition rod, a spring is arranged between the end cover and the transition piece, the spring is sleeved outside the transition rod, and the spring is in a contraction state.

Optionally, the detection structure includes the auxiliary member, and the auxiliary member passes through the articulated elements with the end cover to be connected, the articulated elements is equipped with the torsional spring, and auxiliary member below is connected with ultrasonic wave corrosion test probe.

Optionally, the axial coding subassembly includes axial encoder and axial detection extending structure, axial encoder and detection chain link fixed connection, axial detection extending structure connects axial encoder and transition piece, and axial detection extending structure is extending structure.

Optionally, the axial coding assembly includes an axial coding base, the axial coding base is fixedly connected with the detection chain link, and the axial encoder is arranged on the axial coding base.

This be applied to gas production tree, the well head of production tree corrodes detection device possesses the function of taking notes ultrasonic wave corrosion detection probe axial motion orbit and circumferential motion orbit simultaneously, and this be applied to gas production tree, the well head of production tree corrodes detection device easy operation, adaptability is wide, applicable in the measurement work of the valve neck or the valve junction of different external diameters, do not require the camber of link, and the device still can be applicable to measuring position such as narrower valve neck, consequently this gas production tree well head corrodes detection device possesses good using value.

Drawings

FIG. 1 is a schematic view of a gas production tree wellhead corrosion detection device;

FIG. 2 is a schematic view of a circumferential chain structure of a gas production Christmas tree wellhead corrosion detection device;

FIG. 3 is a schematic view of an inner diameter adjustment link of the gas production tree wellhead corrosion detection device (1/2);

FIG. 4 is a schematic view of an inner diameter adjustment link of the gas production tree wellhead corrosion detection device (2/2);

FIG. 5 is a schematic view of a detection structure of a gas production Christmas tree wellhead corrosion detection device;

FIG. 6 is a cross-sectional view of a detection structure of a gas production Christmas tree wellhead corrosion detection device;

FIG. 7 is a schematic view of an axial encoding component of a gas production Christmas tree wellhead corrosion detection device

The reference numbers illustrate:

100-circumferential chain structure, 110-common chain link, 120-detection chain link, 130-inner diameter adjustment chain link, 140-circumferential coding chain link, 141-circumferential encoder, 200-detection structure, 210-guide rail, 211-guide rail limiting head, 220-transition piece, 230-transition rod, 231-transition rod limiting head, 240-spring, 250-end cover, 260-auxiliary piece, 270-ultrasonic corrosion detection probe, 300-axial coding assembly, 310-axial encoder, 320-axial detection telescopic structure and 330-axial coding base.

Detailed Description

The present invention will be described with reference to the accompanying drawings and embodiments.

As shown in fig. 1, the corrosion detection device for a gas production tree wellhead is suitable for measuring the wall thickness distribution of a valve neck and a valve junction of a gas production tree, and specifically, the device comprises a circumferential chain structure 100, a detection structure 200 and an axial coding assembly 300, wherein the circumferential chain structure 100 is looped around the detected valve neck or the detected valve junction. The circumferential chain structure 100 includes a plurality of chain links connected by hinges, and the specific manner may be: one end of each chain link is provided with a lug, the other end of each chain link is provided with a bulge, and the width of each bulge is slightly smaller than the distance between every two lugs. The bulge of one chain link is inserted between the lugs of the adjacent chain links, and the hinge piece is used for connecting the bulge and the lugs. The rollers are arranged on two sides of the circumferential chain structure 100, and specifically, the rollers are arranged on the chain links of the circumferential chain structure 100 along two circumferential sides. Through the arrangement, in practical application, the valve necks or the valve joints with different diameters can be adapted by increasing or reducing the number of the chain links, the rollers of the circumferential chain structure 100 are in contact with the outer surfaces of the valve necks or the valve joints, and the circumferential chain structure 100 can rotate in the circumferential direction.

It should be noted that the above "circumferential direction" means: the circumferential chain structures 100 form a circular ring-shaped structure, and the circumferential chain structures 100 rotate around the center of a circle.

As shown in fig. 2, the circumferential chain structure 100 includes several links, and specifically, the circumferential chain structure 100 includes a normal link 110, a detecting link 120, an inner diameter adjusting link 130, and a circumferential encoding link 140. The circumferential encoding link 140 is provided with a circumferential encoder 141, the circumferential encoder 141 can record a motion track of circumferential motion of the circumferential encoding link 140, that is, the circumferential encoder 141 can record a circumferential motion track of the circumferential chain structure 100, specifically, the circumferential encoder 141 can be matched with a roller of the circumferential encoding link 140, for example, the circumferential encoder 141 is arranged inside any roller of the circumferential encoding link 140, that is, complexity of the overall structure is reduced, an integration effect of the overall structure is improved, and recording of a motion track of circumferential motion of the circumferential encoding link 140 can also be achieved.

As shown in fig. 3 and 4, the inner diameter adjusting link 130 includes a fastener, which can be opened or closed, so that the gas production tree wellhead corrosion detection device can be conveniently removed from the detected valve neck or valve connection. Specifically, the inner diameter adjusting chain link 130 is provided with two sections, the fastener is arranged at the head of one section of the inner diameter adjusting chain link 130, the tail of the other section of the inner diameter adjusting chain link 130 is provided with a multi-stage fastener interface matched with the fastener, the multi-stage fastener interface is provided with a plurality of connection positions, and when the fastener is connected with the connection positions of different multi-stage fastener interfaces, the circumferential chain structure 100 is provided with different inner diameters, and forms a ring-shaped structure ring sleeved on the detected valve neck or the valve connection position. It should be noted that the head of the inner diameter adjusting link 130 refers to any end of the two adjacent inner diameter adjusting links 130, and the corresponding other end is the tail of the inner diameter adjusting link 130. The inner diameter adjusting chain link 130 may further include two sections, the fastener includes a connecting bolt and an expansion member, the two sections of inner diameter adjusting chain links 130 are connected by the expansion member and respectively provided with a threaded hole, and the expansion member may be disconnected. When the inner diameter adjusting chain links 130 need to be connected to form the circumferential chain structure 100 into an annular structure, the expansion pieces of the two inner diameter adjusting chain links 130 are connected, then the threaded holes of the two inner diameter adjusting chain links 130 are connected through the connecting bolts, the roller of the circumferential chain structure 100 is attached to the detected valve neck or the detected valve joint in a more compact mode through adjusting the connecting bolts, and the stability of the circumferential chain structure 100 along circumferential movement is guaranteed. More preferably, a fast pin is further provided in the wellhead corrosion detecting device applied to the gas production tree or the oil production tree, which includes any one of the inner diameter adjusting links 130, and at least one link of the circumferential chain structure 100 is connected with an adjacent link in an articulated manner through the fast pin, and the circumferential chain structure 100 can be quickly connected or disconnected by inserting or removing the fast pin. After the circumferential chain structure 100 is connected, the inner diameter of the circumferential chain structure 100 can be adjusted by the inner diameter adjusting chain links 130, so that the roller of the circumferential chain structure 100 can be attached to the detected valve neck or the valve joint more compactly, and the stability of the circumferential chain structure 100 along the circumferential motion is ensured.

As shown in fig. 1, 5, and 6, the detecting link 120 is connected to a detecting structure 200, the detecting structure 200 includes a guide rail 210, a transition piece 220, and an axial encoding assembly 230, wherein the guide rail 210 is fixedly connected to one side of the detecting link 120, the axial encoding assembly 230 is connected to the other side of the detecting link 120, and the transition piece 220 slides along the guide rail 210 to move in a vertical circumferential direction. Specifically, the guide rail 210 is a cylindrical solid, the transition piece 220 is provided with a circular hole matched with the guide rail 210, the guide rail 210 penetrates through the circular hole, the tail end of the guide rail 210 is provided with a guide rail limiting head 211, and the size of the guide rail limiting head 211 is larger than the diameter of the circular hole of the transition piece 220. In this manner, transition piece 220 may slide along rail 210 and be constrained to rail 210 without falling out. More preferably, the guide rail 210 is a cylindrical solid, the guide rail 210 is provided with two guide rails 210 which are parallel to each other, the transition piece 220 is provided with two circular holes matched with the guide rail 210, the number of the circular holes is two, the two guide rails 210 respectively penetrate through the two circular holes, the tail end of the guide rail 210 is provided with a guide rail limiting head 211, and the size of the guide rail limiting head 211 is larger than the diameter of the circular hole of the transition piece 220. In this way, the transition piece 220 can slide along the guide rail and is limited on the guide rail 210 and cannot fall off, the sliding connection between the transition piece 220 and the guide rail 210 is more stable, and the transition piece 220 cannot rotate along the guide rail 210.

The detection structure 200 further includes a transition rod 230, an end cover 250, an auxiliary member 260 and an ultrasonic corrosion detection probe 270, wherein the transition rod 230 is connected to the transition member 220 and the end cover 250, specifically, the transition member 220 is provided with a transition hole, the transition rod 230 is connected with the transition member 220 in a sliding manner through the transition hole, the transition rod 230 passes through the limiting hole, and the lower end of the transition rod is fixedly connected to the end cover 250. Preferably, the transition piece 220 is provided with two transition holes, the transition rod 230 is provided with two transition rods, the transition rod 230 and the transition piece 220 are connected in a sliding manner through the transition holes, the transition rod 230 passes through the limiting hole, and the lower end of the transition rod is fixedly connected with the end cover 250. More preferably, the transition piece 220 is provided with two transition holes, the transition rod 230 and the transition piece 220 are slidably connected through the transition holes, the transition rod 230 passes through the limiting hole, the lower end of the transition rod is fixedly connected with the end cover 250, the detection structure 200 is further provided with a spring 240, the spring 240 is arranged between the transition piece 220 and the end cover 250, the spring 240 is sleeved outside the transition rod 230, the spring 240 is preset to be in a compressed state, and when the transition rod 230 and the transition piece 220 slide relatively, the spring 240 is always in the compressed state, that is, an acting force always exists, and the acting force has an effect that the end cover 250 and the transition piece 220 are away from each other. In addition, a transition rod stopper 231 is preferably further disposed at an end of the transition rod 230, which is not connected to the end cap 250, and an outer diameter of the transition rod stopper 231 is larger than an inner diameter of the transition hole, so that the transition rod 230 does not fall off from the transition piece 220.

Ultrasonic corrosion test probe 270 sets up in end cover 250 lower extreme, ultrasonic corrosion test probe 270 is the common instrument that can directly purchase in market, however, the ultrasonic corrosion test probe 270 that this application adopted should guarantee to possess certain flexibility. Through the above arrangement preferably provided with the spring 240, it can be ensured that the end cap 250 always has an acting force on the ultrasonic corrosion detection probe 270 in the detection process, and the acting force enables the ultrasonic corrosion detection probe 270 to always cling to the detected pipe wall surface. More preferably, the end cover 250 is provided with auxiliary members 260 at both ends, and the end cover 250 and the auxiliary members 260 are hingedly connected through a hinge, which may be implemented by: the end cover 250 is provided with lugs at both ends, one end of the auxiliary member 260 is provided with a protrusion, and the width of the protrusion of the auxiliary member 260 is slightly smaller than the distance between the lugs of the end cover 250. The protrusion of the auxiliary member 260 is inserted between the lugs of the end cap 250 and connects the protrusion and the lugs by a hinge.

Or both ends of the end cover 250 are provided with protrusions, one end of the auxiliary element 260 is provided with lugs, and the width of the protrusion of the end cover 250 is slightly smaller than the distance between the lugs of the auxiliary element 260. The protrusion of the auxiliary member 260 is inserted between the lugs of the end cap 250 and connects the protrusion and the lugs by a hinge. Other similar combinations or structures are also possible, and only the effect of the hinged connection of the auxiliary member 260 and the end cap 250 is required, which is not described herein.

Ultrasonic corrosion test probe 270 is connected to auxiliary 260 below, and simultaneously, auxiliary 260 passes through articulated elements articulated formula with end cover 250 to be connected, and is preferred, is equipped with the torsional spring at the articulated elements of auxiliary 260 and end cover 250, predetermines the torsional spring and is in compression state, and under the effect of torsional spring, auxiliary 260 has an effort to ultrasonic corrosion test probe 270, and this effort makes ultrasonic corrosion test probe 270 closely laminate the valve neck or the valve junction surface of waiting to detect.

It should be noted that, with the above arrangement, the ultrasonic corrosion detection probe 270 and the circumferential motion vector of the circumferential encoding link 140 are identical, and therefore the circumferential encoder 141 of the circumferential encoding link 140 can record the circumferential motion trajectory of the ultrasonic corrosion detection probe 270.

As shown in fig. 7, the axial encoding assembly 300 includes an axial encoder 310, an axial detection telescoping structure 320, and an axial encoding base 330. Wherein, axial encoding base 330 with detect chain link 120 fixed connection, axial encoder 310 sets up on axial encoding base 330, axial encoder 310 is connected to axial detection extending structure 320 one end, and transition piece 220 is connected to the axial detection extending structure 320 other end, axial detection extending structure 320 is extending structure, and is specific, axial detection extending structure 320 includes telescopic link or wire rope isotructure, and axial encoder 310 is connected to telescopic link or wire rope one end, and transition piece 220 is connected to the other end, predetermines under the default state, under telescopic link or wire rope's effect, transition piece 220 is located guide rail 210 and is close to and detects chain link 120 one end. When the transition piece 220 slides on the guide rail 210, the ultrasonic corrosion detection probe 270 is driven to move along the same path, the axial detection telescopic structure 320 performs telescopic movement with the same vector, and meanwhile, the axial encoder 310 records the telescopic movement track, that is, the axial encoder 310 records the axial movement track of the ultrasonic corrosion detection probe 270.

It should be noted that the "axial direction" refers to a direction perpendicular to the circumferential chain structure 100 and parallel to the outer surface of the neck or joint of the valve to be tested.

Several specific configurations and methods of use of the apparatus for detecting gas production tree wellhead corrosion described herein are described below by way of example.

Example 1

This gas production tree well head corrosion detection device includes circumference chain structure 100 and detection structure 200, and wherein, circumference chain structure 100 includes a plurality of chain links, connects through the articulated elements between the chain link, and its concrete mode is: one end of each chain link is provided with a lug, the other end of each chain link is provided with a bulge, and the width of each bulge is slightly smaller than the distance between every two lugs. The bulge of one chain link is inserted between the lugs of the adjacent chain links, and the hinge piece is used for connecting the bulge and the lugs. In addition, the circumferential chain structure 100 is provided with rollers along both sides in the circumferential direction. Through the arrangement, in practical application, the valve necks or the valve joints with different radiuses can be adapted by increasing or reducing the number of the chain links, the rollers of the circumferential chain structure 100 are in contact with the outer surfaces of the valve necks or the valve joints, and the circumferential chain structure 100 can rotate in the circumferential direction.

The circumferential chain structure 100 comprises a plurality of links, and specifically, the circumferential chain structure 100 comprises a common link 110, a detecting link 120, an inner diameter adjusting link 130 and a circumferential encoding link 140. The circumferential encoder 141 is provided with a circumferential encoder 141, and the circumferential encoder 141 records the motion trace of the circumferential motion of the circumferential encoder link 140 by matching and detecting the roller rotation signal of the circumferential encoder link 140, that is, the circumferential encoder 141 can record the circumferential motion trace of the ultrasonic erosion detection probe 270. The circumferential encoder 141 records the movement locus of the circumferential movement of the circumferential encoding link 140 by matching and detecting the roller movement data of the circumferential encoding link 140.

The inner diameter adjusting chain link 130 comprises a fastener, the inner diameter adjusting chain link 130 is provided with two sections, the fastener comprises a connecting bolt and an expansion piece, the two sections of inner diameter adjusting chain links 130 are connected through the expansion piece and are respectively provided with a threaded hole, and the expansion piece can be disconnected. When the inner diameter adjusting chain links 130 need to be connected to form the circumferential chain structure 100 into an annular structure, the expansion pieces of the two inner diameter adjusting chain links 130 are connected, then the threaded holes of the two inner diameter adjusting chain links 130 are connected through the connecting bolts, the roller of the circumferential chain structure 100 is attached to the detected valve neck or the detected valve joint in a more compact mode through adjusting the connecting bolts, and the stability of the circumferential chain structure 100 along circumferential movement is guaranteed.

The detecting link 120 is connected with a detecting structure 200, and the detecting structure 200 includes a guide rail 210, a transition piece 220 and an axial encoding component 230, wherein the guide rail 210 is fixedly connected with one side of the detecting link 120, and the axial encoding component 230 is connected with the other side of the detecting link 120. The guide rail 210 is a cylindrical entity, the guide rail 210 is provided with two guide rails 210 which are parallel to each other, the transition piece 220 is provided with two round holes matched with the guide rail 210, the number of the round holes is two, the two guide rails 210 respectively penetrate through the two round holes, the tail end of the guide rail 210 is provided with a guide rail limiting head 211, and the size of the guide rail limiting head 211 is larger than the diameter of the round holes of the transition piece 220. In this way, the transition piece 220 can slide along the guide rail 210 and is limited on the guide rail 210 and cannot fall off, the sliding connection between the transition piece 220 and the guide rail 210 is more stable, and the transition piece 220 cannot rotate along the guide rail 210.

The detection structure 200 further comprises two transition rods 230, an end cover 250, an auxiliary part 260 and an ultrasonic corrosion detection probe 270, wherein the transition part 220 is provided with two transition holes, the transition rods 230 and the transition part 220 are connected in a sliding manner through the transition holes, the transition rods 230 and the end cover 250 are fixedly connected, and the heads of the transition rods 230 are provided with limiting heads 231. With this arrangement, end cap 250 moves up and down parallel to the radial direction of transition piece 230 via the sliding connection of transition piece 220 with transition piece 230. A spring 240 is disposed between the transition piece 220 and the end cap 250, and the spring 240 is looped around the transition rod 230. When the end cover 250 is preset to move up and down in the radial direction of the parallel transition rod 230, the spring 240 is always in a contraction state, that is, the end cover 250 is in the process of moving up and down in the radial direction of the parallel transition rod 230, the spring always has an acting force on the end cover 250, and the acting effect of the acting force is as follows: so that the end cap 250 does not fall off the neck of the valve or the valve connection to be tested.

The end cover 250 is provided with auxiliary pieces 260 at two ends, and the end cover 250 is connected with the auxiliary pieces 260 in a hinged manner through hinges, in a specific manner: the end cover 250 is provided with lugs at both ends, one end of the auxiliary member 260 is provided with a protrusion, and the width of the protrusion of the auxiliary member 260 is slightly smaller than the distance between the lugs of the end cover 250. The protrusion of the auxiliary member 260 is inserted between the lugs of the end cap 250 and connects the protrusion and the lugs by a hinge.

Ultrasonic corrosion test probe 270 is connected to auxiliary 260 and end cover 250 below, ultrasonic corrosion test probe 270 is flexible structure, and simultaneously, auxiliary 260 passes through the articulated formula of articulated elements with end cover 250 and is connected to be equipped with the torsional spring at the articulated elements, predetermine this torsional spring and be in compression state, through the torsional spring effect, auxiliary 260 has an effort to ultrasonic corrosion test probe 270 all the time, makes ultrasonic corrosion test probe 270 closely laminate and waits to detect valve neck or valve junction surface.

The axial encoding assembly 300 includes an axial encoder 310, an axial sensing telescoping structure 320, and an axial encoding base 330. Wherein, axial encoding base 330 with detect chain link 120 fixed connection, axial encoder 310 sets up on axial encoding base 330, axial encoder 310 is connected to axial detection extending structure 320 one end, and transition piece 220 is connected to the axial detection extending structure 320 other end, axial detection extending structure 320 is extending structure, and is specific, axial detection extending structure 320 includes wire rope, and axial encoder 310 is connected to wire rope one end, and transition piece 220 is connected to the other end, predetermines under the default state, and under wire rope's the effect, transition piece 220 is located guide rail 210 and is close to and detects chain link 120 one end. When the transition piece 220 slides on the guide rail 210, the ultrasonic corrosion detection probe 270 is driven to move along the same path, the axial detection telescopic structure 320 performs telescopic movement with the same vector, and meanwhile, the axial encoder 310 records a track of the telescopic movement, that is, the axial encoder 310 records a movement track of the ultrasonic corrosion detection probe 270.

The gas production Christmas tree wellhead corrosion detection device comprises the following use steps:

1) two inner diameter adjusting chain links 130 of the device are disconnected, and the circumferential chain structure 100 is surrounded beside a neck or a valve joint of a valve to be detected;

2) the telescopic piece is connected with the two sections of inner diameter adjusting chain links 130, the two sections of inner diameter adjusting chain links 130 are connected through connecting bolts penetrating through threaded holes of the two sections of inner diameter adjusting chain links 130, and the inner diameter of the circumferential chain structure 100 is adjusted through adjusting the connecting bolts, so that the roller of the circumferential chain structure 100 is compactly attached to the outside of a neck of a valve to be detected or the joint of the valve;

3) at this time, under the action of the spring 240 and the torsion spring, the ultrasonic corrosion detection probe 270 is tightly attached to the surface of the position to be detected. Rotating the circumferential chain structure 100 by manual operation for one circle in the circumferential direction, operating the transition piece 220 to axially step the ultrasonic corrosion detection probe 270 by a preset distance, and repeating the steps to complete the detection process within the detection range; or, the transition piece 220 is manually operated to axially move the ultrasonic corrosion detection probe 270 for a fixed distance, and then the circumferential chain structure 100 is operated to circumferentially step and rotate for a certain angle, so that the detection process in the detection range is completed by repeating the steps.

4) Adjusting the connecting bolts of the inner diameter adjusting chain links 130 to increase the inner diameter of the annular structure formed by the circumferential chain structure 100, moving the circumferential chain structure 100 to other valve necks or valve joints to be detected, and repeating the steps for detection;

5) after all detection is finished, the connecting bolt of the inner diameter adjusting chain link 130 is taken down, the telescopic piece is disconnected, the device is taken down, the wall thickness detection data, the circumferential motion track and the axial motion track of the ultrasonic corrosion detection probe 270 are read through software, wall thickness-track data can be generated, and the wall thickness distribution of the detected valve neck or the valve connecting part can be detected in detail through the data.

This gas production tree well head corrodes detection device is through the quantity of increase and decrease ordinary chain link 110 and the connecting bolt of adjusting internal diameter regulation chain link 130, makes the device be applicable to the valve neck or the valve junction of different external diameters to there is not corresponding requirement to the camber of chain link, simultaneously, the device's ultrasonic wave corrodes the circumference motion and the axial motion of test probe 270 and is recorded simultaneously, can obtain more accurate valve neck or the wall thickness distribution data of valve junction. Therefore, the gas production Christmas tree wellhead corrosion detection device has good practicability.

Example 2

Inner diameter regulation chain link 130 includes the buckle spare, inner diameter regulation chain link 130 is equipped with two sections, and one of them section inner diameter regulation chain link 130 head is equipped with a buckle spare, and another inner diameter regulation chain link 130 adjacent afterbody is one section to be provided with the multistage buckle interface that matches with the buckle spare, multistage buckle interface possesses a plurality of hookup locations, and when the hookup location of different multistage buckle interfaces was connected to the buckle spare, this chain structure 100 possessed different internal diameters, and through above-mentioned setting, this circumference chain structure 100's internal diameter was multistage adjustable, and the valve neck or the valve junction of the different external diameters of laminating that make circumference chain structure 100's gyro wheel can be compacter are selected to different internal diameters, guarantees circumference chain structure 100 along the stability of circumferential motion.

The detecting link 120 is connected with a detecting structure 200, which includes a guide rail 210, a transition piece 220 and an axial encoding component 230, wherein the guide rail 210 is fixedly connected with one side of the detecting link 120, and the axial encoding component 230 is connected with the other side of the detecting link 120. The guide rail 210 is a cylindrical entity, the guide rail 210 is provided with two guide rails 210 which are parallel to each other, the transition piece 220 is provided with two round holes matched with the guide rail 210, the number of the round holes is two, the two guide rails 210 respectively penetrate through the two round holes, the tail end of the guide rail 210 is provided with a guide rail limiting head 211, and the size of the guide rail limiting head 211 is larger than the diameter of the round holes of the transition piece 220. In this way, the transition piece 220 can slide along the guide rail and is limited on the guide rail 210 and cannot fall off, the sliding connection between the transition piece 220 and the guide rail 210 is more stable, and the transition piece 220 cannot rotate along the guide rail 210.

The wellhead corrosion detection device applied to the gas production tree and the oil production tree comprises the following use steps:

2) the inner diameter of the circumferential chain structure 100 is changed by adjusting the connecting positions of the buckling pieces and the multistage buckling interfaces, so that the roller of the circumferential chain structure 100 is attached to the outer surface of a neck or a joint of a valve to be detected more compactly;

3) at this time, under the action of the spring 240 and the torsion spring, the ultrasonic corrosion detection probe 270 is tightly attached to the surface of the position to be detected. Rotating the circumferential chain structure 100 by manual operation for one circle in the circumferential direction, operating the transition piece 220 to axially step the ultrasonic corrosion detection probe 270 by a preset distance, and repeating the steps to complete the detection process within the detection range; or, manually operating the transition piece 220 to axially move the ultrasonic corrosion detection probe 270 for a fixed distance, and then operating the circumferential chain structure 100 to circumferentially rotate for one circle, and repeating the above steps to complete the detection process within the detection range.

5) after all detection is finished, the device is taken down by disconnecting the connection of the fastener and the multistage fastener interfaces, wall thickness-track data can be generated by reading wall thickness detection data, a circumferential motion track and an axial motion track of the ultrasonic corrosion detection probe 270 through software, and wall thickness distribution of a detected valve neck or a valve joint can be detected in detail through the data.

This be applied to gas production tree, production tree's wellhead corrosion detection device adjusts the buckle spare of chain link 130 and the hookup location of multistage buckle interface through the quantity of increase and decrease ordinary chain link 110 and regulation internal diameter, makes the device be applicable to the valve neck or the valve junction of different external diameters to there is not corresponding requirement to the camber of chain link, and simultaneously, the device's ultrasonic wave corrodes the circumference motion and the axial motion of test probe 270 and is recorded simultaneously, can obtain the wall thickness distribution data of more accurate valve neck or valve junction. Therefore, the wellhead corrosion detection device applied to the gas production tree and the Christmas tree has good practicability.

The same and similar parts among the various embodiments in the specification of the present application may be referred to each other. Especially, for the system and terminal embodiments, since the method therein is basically similar to the method embodiments, the description is relatively simple, and the relevant points can be referred to the description in the method embodiments.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Of course, the above description is not limited to the above examples, and technical features that are not described in this application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present application and not for limiting the present application, and the present application is only described in detail with reference to the preferred embodiments instead, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present application may be made by those skilled in the art without departing from the spirit of the present application, and the scope of the claims of the present application should also be covered.

Claims

1. The wellhead corrosion detection device is applied to gas production trees and oil production trees, and is characterized by comprising a circumferential chain structure (100), a detection structure (200) and an axial coding assembly (300), wherein the circumferential chain structure (100) is of an annular structure, rollers are arranged on two sides of the circumferential chain structure, the circumferential chain structure (100) comprises a detection chain link (120) and a circumferential coding chain link (140), the detection structure (200) is connected with one side of the detection chain link (120), the other side of the detection chain link (120) is connected with the axial coding assembly (300), the detection structure (200) comprises an ultrasonic corrosion detection probe (270), and the circumferential coding chain link (140) comprises a circumferential encoder (141); circumferential chain structure (100) is along circumference rotary motion, and ultrasonic corrosion test probe (270) is along the direction concertina movement of perpendicular circumferential chain structure (100), ultrasonic corrosion test probe (270) are flexible structure.

2. The wellhead corrosion detection device applied to gas production trees and oil production trees is characterized in that the circumferential chain structure (100) comprises a common chain link (110) and an inner diameter adjusting chain link (130), and the common chain link (110), the detection chain link (120), the inner diameter adjusting chain link (130) and the circumferential encoding chain link (140) are connected in an articulated mode.

3. The wellhead corrosion detection device applied to the gas production tree and the oil production tree as claimed in claim 2, wherein the inner diameter adjusting chain link (130) is provided with two sections, the two sections of inner diameter adjusting chain links (130) are respectively provided with a threaded hole, and the two sections of inner diameter adjusting chain links (130) are connected with the two threaded holes in a matching manner through connecting bolts.

4. The wellhead corrosion detection device applied to the gas production tree and the oil production tree as claimed in claim 2, wherein the inner diameter adjusting chain link (130) is provided with two sections, wherein the head of one section of the inner diameter adjusting chain link (130) is provided with a fastener, the tail of the other section of the inner diameter adjusting chain link (130) is provided with a multi-stage fastener interface, the multi-stage fastener interface is provided with a plurality of connection positions, and the fastener and different connection positions of the multi-stage fastener interface are connected in a matching manner.

5. The wellhead corrosion detection device applied to the gas production tree and the oil production tree is characterized by comprising a quick bolt, wherein at least one of the ordinary chain link (110), the detection chain link (120), the inner diameter adjusting chain link (130) and the circumferential encoding chain link (140) is connected with an adjacent chain link in an articulated mode through the quick bolt, the quick bolt is removed, and the circumferential chain structure (100) is broken.

6. The wellhead corrosion detection device applied to gas production trees and oil production trees is characterized in that the detection structure (200) comprises a transition piece (220), a guide rail (210), a transition rod (230) and an end cover (250), the guide rail (210) is fixedly connected with the detection chain link (120), and the transition piece (220) is slidably connected with the guide rail (210); the transition rod (230) is connected with the transition piece (220) and the end cover (250), and the ultrasonic corrosion detection probe (270) is connected below the end cover (250).

7. The wellhead corrosion detecting device applied to a gas production tree and a Christmas tree of claim 6, wherein the transition piece (220) is slidably connected with the transition rod (230), the end cover (250) is fixedly connected with the transition rod (230), a spring (240) is arranged between the end cover (250) and the transition piece (220), the spring (240) is sleeved outside the transition rod (230), and the spring (240) is in a contracted state.

8. The wellhead corrosion detection device applied to the gas production tree and the Christmas tree of claim 6, wherein the detection structure (200) comprises an auxiliary member (260), the auxiliary member (260) is connected with the end cover (250) through a hinge, the hinge is provided with a torsion spring, and the lower part of the auxiliary member (260) is connected with the ultrasonic corrosion detection probe (270).

9. The wellhead corrosion detection device applied to the gas production tree and the oil production tree of claim 6, wherein the axial coding assembly (300) comprises an axial encoder (310) and an axial detection telescopic structure (320), the axial encoder (310) is fixedly connected with the detection chain link (120), the axial detection telescopic structure (320) is connected with the axial encoder (310) and the transition piece (220), and the axial detection telescopic structure (320) is a telescopic structure.

10. The wellhead corrosion detecting device applied to the gas production tree and the oil production tree of claim 9, wherein the axial coding assembly (300) comprises an axial coding base (330), the axial coding base (330) is fixedly connected with the detecting link (120), and the axial encoder (310) is arranged on the axial coding base (330).