Non-metal pipeline geometric deformation internal detector with automatic blockage release function

Abstract

The present application relates to the technical fields of pipeline geometry deformation inner detector, especially to a non-metal pipeline geometry deformation inner detector with automatic unblocking function, comprising an adaptive module, the adaptive module comprises a head core shaft, a first leather bowl is used for contacting and sealing with the inner circumferential wall of the pipeline, so as to form a first cavity and a second cavity which are separated from each other, an auxiliary supporting mechanism is arranged on the first leather bowl, which can always contact and seal with the inner circumferential wall of the pipeline when deformed, when in use, the adaptive module and the detection module can change with the change of the pipeline when displacing in the pipeline, the adaptive module and the detection module are separated from each other, so as to prevent the detector from being blocked, the two ends of the recovery mechanism are always connected to the adaptive module and the detection module, and can be restored to the initial state under the assistance of the recovery mechanism, so as to automatically unblock the state of the detector in the pipeline, and improve the applicability of the detector under complex working conditions.

Description

Technical Field

[0001] This invention relates to the field of pipeline geometric deformation internal detectors, and in particular to non-metallic pipeline geometric deformation internal detectors with automatic unblocking function. Background Technology

[0002] Non-metallic pipelines are widely used in oil and gas transportation due to their advantages such as corrosion resistance, low friction, and energy efficiency. However, due to factors such as third-party damage and geological subsidence, pipe joints are prone to misalignment and pipe deformation, leading to pipeline leaks and potentially more serious fire and explosion accidents. Therefore, deformation detection of non-metallic pipelines is urgently needed.

[0003] Simultaneously, pipeline deformation testing must be conducted before conducting pipeline corrosion testing. This involves inspecting the degree and location of deformation at straight pipe sections, elbows, mitered joints, and welds to confirm that the pipeline has good internal detector throughput. Only after confirming this can the corrosion internal detector be deployed. However, the pipeline's deformation status is unknown before deploying the geometric deformation internal detector. If the detector becomes stuck in the pipeline, it may cause a pipeline shutdown, or even require pipe cutting to remove the detector. Therefore, pipeline geometric deformation detectors require higher throughput performance in easily stuck conditions.

[0004] Furthermore, most existing pipe geometry deformation internal detectors are designed for steel pipes, with the detection arm in rigid contact with the pipe wall, which easily scratches the pipe wall and damages the pipe itself. At the same time, the design of existing pipe geometry deformation internal detectors does not adequately consider the detector's performance at bends and deformation points, making them prone to jamming during use, especially in the field of non-metallic pipe deformation detection, where such internal detectors are scarce on the market. Therefore, this invention provides a non-metallic pipe geometry deformation internal detector with adaptive jamming conditions. Summary of the Invention

[0005] The technical problem this invention aims to solve is as follows: Most existing pipe geometry deformation internal detectors are designed for steel pipes, with the detection arm in rigid contact with the pipe wall, easily scratching the pipe and damaging the pipe itself. Furthermore, the design of these internal detectors does not adequately consider the passability of the detector at bends and deformation points, making them prone to jamming during use. This is especially true in the field of non-metallic pipe deformation detection, where there are very few such internal detectors on the market. Therefore, this invention provides a non-metallic pipe geometry deformation internal detector with an automatic anti-jamming function.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a non-metallic pipe geometric deformation internal detector with automatic unblocking function, including an adaptive module, the adaptive module including a head mandrel, the head mandrel being provided with a first cup, the first cup being used to contact and seal with the inner peripheral wall of the pipe, thereby forming a first cavity and a second cavity that are separated from each other. The first cup is provided with an auxiliary support mechanism to ensure that it can always contact and seal with the inner peripheral wall of the pipe during deformation. The head mandrel is provided with a first pressure relief hole for connecting the first cavity and the second cavity. The first pressure relief hole is provided with a control mechanism for controlling the opening degree of the pressure relief hole and realizing speed control.

[0007] The detection module includes a base, on which a power supply battery and a communication mechanism for connecting to external devices are mounted. A second diaphragm is mounted on the base, and the detection mechanism is positioned between the second diaphragm and the base. The communication mechanism is signal-connected to both the detection mechanism and a control mechanism. The power supply battery is connected to the detection mechanism, the communication mechanism, and the control mechanism. The second diaphragm contacts the inner wall of the pipe, forming a third and fourth cavity that are separated from each other. The second and third cavities are located between the first and fourth cavities. The third and fourth chambers are interconnected. A second pressure relief hole is provided on the base to connect the third and fourth chambers. A connecting hole, truncated cone-shaped, is provided at one end of the base near the head spindle. The connecting hole is axially aligned with the pipe. One end of the head spindle matches the connecting hole and is positioned within it. A restoration mechanism is provided between the head spindle and the base. This mechanism assists in re-inserting the head spindle after it disengages from the connecting hole. Compared to existing technologies, in this solution, the adaptive module and detection module can adapt to changes in the pipe's displacement. The adaptive module and detection module are detached to prevent detector jamming. The two ends of the restoration mechanism are always connected to the adaptive module and detection module and, with the assistance of the restoration mechanism, can return to their initial state, automatically releasing the detector from jamming within the pipe and improving its applicability under complex operating conditions.

[0008] To achieve the recovery mechanism, in some preferred embodiments, the recovery mechanism includes a first spring, one end of which is fixed to the base, and the other end of which is fixed to the head spindle. The first spring is located within the connecting hole. The recovery mechanism is based on the first spring, which has a certain elastic deformation capacity. When the first spring disengages, it is stretched; simultaneously, it returns to its original position after the jamming is released. Since springs are common components, they are easy to purchase and convenient for later maintenance.

[0009] In order to realize the first leather cup, in some preferred embodiments, the first leather cup includes a first fixed leather cup, the first fixed leather cup is annular and fixed on the outer peripheral surface of the head mandrel, and a first sealing leather cup is connected to the outer ring of the first fixed leather cup, the first sealing leather cup is annular structure.

[0010] In order to realize the auxiliary support mechanism, in some preferred embodiments, the auxiliary support mechanism includes a second spring, one end of the second spring is fixed on the first fixed cup, and the other end of the second spring is fixed on the first sealing cup.

[0011] To implement the control mechanism, in some preferred embodiments, the control mechanism includes a cover plate and a stop block. The cover plate covers one end of the first pressure relief hole located in the first chamber. A through hole is formed on the cover plate to connect the first chamber and the first pressure relief hole. The head spindle is equipped with a drive mechanism for driving the stop block to move and thus blocking or opening the through hole. The drive mechanism drives the stop block to move, allowing the stop block to partially block the through hole, leave it unblocked, or completely block it, achieving different opening degrees for the through hole. This controls the amount of gas entering the first chamber from the second chamber, thereby controlling the displacement speed of the detector within the pipeline.

[0012] In some preferred embodiments, the cover plate has a plurality of through holes evenly distributed and spaced along the circumferential direction, and the stop blocks are provided corresponding to the through holes.

[0013] In order to realize the second leather cup, in some preferred embodiments, the second leather cup includes a second sealing leather cup, the second sealing leather cup is an annular structure, and the second sealing leather cup is fixed on the outer peripheral surface of the base.

[0014] To implement the detection mechanism, in some preferred embodiments, the detection mechanism includes a plurality of detection arms, which are evenly distributed along the circumference of the base. One end of each detection arm is hinged to the base, and the other end of each detection arm abuts against the position where the second sealing cup contacts the pipe. The second sealing cup is located between the pipe and the other end of the detection arm, and a third spring is provided between each detection arm and the base.

[0015] In order to prevent the detector from damaging its internal components when passing through bends, in some preferred embodiments, the head spindle is provided with an anti-collision head to prevent the detector from damaging its internal components when it is moving too fast or passing through bends.

[0016] In some preferred embodiments, the anti-collision head is located at the front end in the direction of head spindle displacement, and the anti-collision head is made of explosion-proof metal or explosion-proof polyurethane material.

[0017] The beneficial effects of this invention are as follows: When using the non-metallic pipe geometric deformation internal detector with automatic unblocking function, the adaptive module and the detection module can change with the pipe's displacement. The adaptive module and the detection module are disconnected from each other to prevent the detector from getting stuck. With the assistance of the restoration mechanism, it can return to its initial state. Simultaneously, both ends of the restoration mechanism are always connected to the adaptive module and the detection module, achieving automatic unblocking of the detector within the pipe. This improves the detector's applicability under complex working conditions and avoids the problems of existing pipe geometric deformation internal detectors, which are mostly designed for steel pipes. The detection arm is in rigid contact with the pipe wall, easily scratching the pipe wall and damaging the pipe body. Furthermore, the design of the pipe geometric deformation internal detector does not fully consider the detector's performance at bends and deformation points, making it prone to sticking during use. This is especially true in the field of non-metallic pipe deformation detection, where there are very few related geometric deformation internal detectors on the market. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention. Figure 1 ;

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention. Figure 2 ;

[0021] Figure 3 This is the front view of the present invention;

[0022] Figure 4 This is a top view of the present invention;

[0023] Figure 5 This is a bottom view of the present invention;

[0024] Figure 6 yes Figure 4 Sectional view of AA;

[0025] Figure 7 This is a schematic diagram of the control mechanism in this invention.

[0026] In the figure: 1. Adaptive module, 101. Head spindle, 102. First cup, 1021. First fixed cup, 1022. First sealing cup, 103. Auxiliary support mechanism, 104. First pressure relief hole, 105. Control mechanism, 1051. Cover plate, 1052. Stop block, 1053. Through hole;

[0027] 2. Detection module, 201. Base, 202. Second leather cup, 203. Second pressure relief hole, 204. Connection hole, 205. Restoration mechanism, 206. Detection mechanism, 2061. Detection arm, 2062. Third spring;

[0028] 3. Anti-collision head. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the embodiments:

[0030] This invention is not limited to the specific embodiments listed below. Those skilled in the art can implement this invention using various other specific embodiments based on the content disclosed herein. Any modifications or alterations made to the design structure and concept of this invention fall within the protection scope of this invention. It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] like Figure 1-7As shown, a non-metallic pipe geometric deformation internal detector with automatic unblocking function includes an adaptive module 1. The adaptive module 1 includes a head spindle 101, on which a first cup 102 is provided. The first cup 102 is used to contact and seal with the inner peripheral wall of the pipe, thereby forming a first cavity and a second cavity that are separated from each other. The first cup 102 is provided with an auxiliary support mechanism 103 to ensure that it can always contact and seal with the inner peripheral wall of the pipe during deformation. The head spindle 101 is provided with a first pressure relief hole 104 to connect the first cavity and the second cavity. The first pressure relief hole 104 is provided with a control mechanism 105 for controlling the opening degree of the pressure relief hole and realizing speed control.

[0034] The detection module 2 includes a base 201, on which a power supply battery and a communication mechanism for connecting to external devices are mounted. A second cup 202 is mounted on the base 201, and a detection mechanism 206 is positioned between the second cup 202 and the base 201. The communication mechanism is connected to both the detection mechanism 206 and the control mechanism 105. The power supply battery is connected to the detection mechanism 206, the communication mechanism, and the control mechanism 105. The second cup 202 is used to contact the inner wall of the pipe, forming a third and fourth cavity that are separated from each other. The second and third cavities are located between the first and fourth cavities and are interconnected. The base 201 is provided with a mechanism for... The second pressure relief hole 203 connects the third and fourth chambers. The base 201 is provided with a connecting hole 204 at one end near the head spindle 101. The connecting hole 204 is frustoconical, with the larger end of the connecting hole 204 close to the head spindle 101. The connecting hole 204 is arranged along the axial direction of the pipe. One end of the head spindle 101 matches the connecting hole 204. One end of the head spindle 101 is set in the connecting hole 204. A restoration mechanism 205 is provided between one end of the head spindle 101 and the base 201. The restoration mechanism 205 is used to keep the head spindle 101 and the base 201 connected at all times, and can assist the head spindle 101 in inserting one end of the head spindle 101 into the connecting hole 204 after one end of the head spindle 101 is disengaged from the connecting hole 204.

[0035] The restoration mechanism 205 includes a first spring, one end of which is fixed to the base 201 and the other end of which is fixed to the head spindle 101. The first spring is located inside the connecting hole 204.

[0036] The first leather cup 102 includes a first fixed leather cup 1021, which is annular and fixed on the outer circumferential surface of the head spindle 101. The outer ring of the first fixed leather cup 1021 is connected to a first sealing leather cup 1022, which is annular in structure. The auxiliary support mechanism 103 includes a second spring, one end of which is fixed on the first fixed leather cup 1021 and the other end of which is fixed on the first sealing leather cup 1022. The first leather cup 102 is made of high wear-resistant and high elastic polyurethane material.

[0037] The control mechanism 105 includes a cover plate 1051 and a stop block 1052. The cover plate 1051 covers one end of the first pressure relief hole 104 located in the first cavity. A through hole 1053 is provided on the cover plate 1051 to connect the first cavity and the first pressure relief hole 104. A drive mechanism is provided on the head spindle 101 to drive the stop block 1052 to move and block or open the through hole 1053. In this embodiment, the drive mechanism is a motor. A number of through holes 1053 are evenly distributed and spaced along the circumferential direction on the cover plate 1051. The stop block 1052 is provided corresponding to the through holes 1053.

[0038] The second sealing cup 202 includes a second sealing cup, which is an annular structure and is fixed to the outer circumferential surface of the base 201. The detection mechanism 206 includes several detection arms 2061 and a data acquisition card. The detection arms 2061 are evenly distributed along the circumferential direction of the base 201. One end of the detection arm 2061 is hinged to the base 201, and the other end of the detection arm 2061 abuts against the position where the second sealing cup contacts the pipe. The second sealing cup is located between the pipe and the other end of the detection arm 2061. A third spring 2062 is provided between each detection arm 2061 and the base 201. The data acquisition card is used to collect the pipe deformation information detected by the detection arm 2061.

[0039] The head spindle 101 is provided with an anti-collision head 3 to prevent the detector from being damaged by its internal components when it is moving too fast or passing through a bend. The anti-collision head 3 is located at the front end of the head spindle 101 in the displacement direction. The anti-collision head 3 is made of explosion-proof metal or explosion-proof polyurethane material.

[0040] The steps for using the detector are as follows:

[0041] S1. Deploy the detector inside the valve chamber using a portable ball launcher;

[0042] S2. The detector is driven to move by the differential pressure formed by the first cup 102 on the detector. At the same time, the displacement speed of the detector is realized and kept stable by the control mechanism 105.

[0043] S3. The detector moves continuously along the pipeline with the medium inside the pipeline. The change of the angle between the detection arm 2061 and the pipeline axis is recorded by the swingable detection arm 2061 on the detection mechanism 206. The distance between the deformation detection arm 2061 and the pipe wall when it is pressed down or relaxed is obtained. Then the deformation is calculated. At the same time, the detector moves to the outside of the pipeline through the ultra-low frequency transmitter of the communication mechanism to realize the positioning of the detector's movement mileage.

[0044] S4. The data from the data acquisition card in the detection mechanism 206 of the detector is imported into the computer for data analysis by using a portable ball receiver in the valve chamber.

[0045] When the above-mentioned non-metallic pipeline geometric deformation internal detector with automatic unblocking function is used, since the medium transported in the pipeline is natural gas or water, in the initial state, the detector is placed in the pipeline, and the first cup 102 is interference fit with the inner wall of the pipeline and the driving pressure difference formed by the seal enables the detector to move on its own.

[0046] When the detector experiences a sudden increase in pipe diameter, the pressure in the first chamber ahead of the detector decreases instantaneously. The first cup 102 becomes stuck under the action of the auxiliary support mechanism 103. Alternatively, if the detector becomes stuck at a bend due to pipe geometric deformation, the driving pressure difference before and after the first cup 102 increases, meaning the pressure difference between the first and second chambers increases. Because the detector is stuck and cannot move, the medium in the pipe causes the first cup 102 to continuously increase in size in the second chamber. The first cup 102, under traction, will disengage from the connection hole 204, causing the adaptive module 1 to shift within the pipe. The restoration mechanism 205 then pulls the subsequent detection module 2 into the stuck area of ​​the pipe. When the detector passes through the stuck section of the pipe... After the blockage is cleared, under the action of the first spring in the restoration mechanism 205, one end of the head spindle 101 is inserted into the connection hole 204, realizing the restoration of the adaptive module 1 and the detection module 2 to the initial state, achieving self-adaptation for different pipe deformation sizes. At the same time, under the action of the third spring 2062, the detection arm 2061 drives the second cup 202 to contact the inner wall of the pipe and detect. Since the control mechanism 105 is set at the first pressure relief hole 104, the control mechanism 105 controls the opening of the pressure relief hole. Therefore, the first pressure relief hole 104 creates a pressure difference between the first cavity and the second cavity. The pressure difference can drive the detector to move in the pipe. Since there are no components at the second pressure relief hole 203, the pressure between the second cavity, the third cavity and the fourth cavity is basically the same.

[0047] The above description, based on the preferred embodiments of the present invention, provides inspiration. Those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification but must be determined according to the claims.

Claims

1. A non-metallic pipe geometric deformation internal detector with automatic unblocking function, characterized in that: The system includes an adaptive module and a detection module. The adaptive module includes a head mandrel with a first cup on it. The first cup is used to contact and seal with the inner wall of the pipe, forming a first cavity and a second cavity that are separated from each other. The first cup is provided with an auxiliary support mechanism to ensure that it always contacts and seals with the inner wall of the pipe when it deforms. The head mandrel is provided with a first pressure relief hole to connect the first cavity and the second cavity. The first pressure relief hole is provided with a control mechanism to control the opening degree of the pressure relief hole and realize speed control. The detection module includes a base, on which a power supply battery and a communication mechanism for connecting to external devices are mounted. A second diaphragm is mounted on the base, and a detection mechanism is positioned between the second diaphragm and the base. The communication mechanism is signal-connected to both the detection mechanism and a control mechanism. The power supply battery is connected to the detection mechanism, the communication mechanism, and the control mechanism. The second diaphragm contacts the inner wall of the pipe, forming a third and fourth cavity that are separated from each other. The second and third cavities are located between the first and fourth cavities and are interconnected. The base is provided with a second pressure relief hole for connecting the third chamber and the fourth chamber. The base is provided with a connecting hole near the head mandrel. The connecting hole is frustoconical, with the larger end of the connecting hole close to the head mandrel. The connecting hole is arranged along the axial direction of the pipe. One end of the head mandrel matches the connecting hole and is disposed in the connecting hole. A restoration mechanism is provided between one end of the head mandrel and the base. The restoration mechanism is used to keep the head mandrel and the base connected at all times, and can assist the other end of the head mandrel in being inserted into the connecting hole after it is disengaged from the connecting hole. The recovery mechanism includes a first spring, one end of which is fixed to the base, and the other end of which is fixed to the head spindle. The first spring is located inside the connecting hole. The control mechanism includes a cover plate and a stop block. The cover plate covers one end of the first pressure relief hole located in the first cavity. A through hole is provided on the cover plate to connect the first cavity and the first pressure relief hole. A drive mechanism is provided on the head spindle to drive the stop block to move and block or open the through hole.

2. The non-metallic pipe geometric deformation internal detector with automatic unblocking function according to claim 1, characterized in that: The first leather cup includes a first fixed leather cup, which is annular and fixed on the outer peripheral surface of the head spindle. The outer ring of the first fixed leather cup is connected to a first sealing leather cup, which is annular in structure.

3. The non-metallic pipe geometric deformation internal detector with automatic unblocking function according to claim 2, characterized in that: The auxiliary support mechanism includes a second spring, one end of which is fixed to the first fixed cup, and the other end of which is fixed to the first sealing cup.

4. The non-metallic pipe geometric deformation internal detector with automatic unblocking function according to claim 3, characterized in that: The cover plate has several through holes evenly distributed and spaced along the circumference, and the stop blocks are provided corresponding to the through holes.

5. The non-metallic pipe geometric deformation internal detector with automatic unblocking function according to claim 1, characterized in that: The second leather cup includes a second sealing leather cup, which has an annular structure and is fixed to the outer circumferential surface of the base.

6. The non-metallic pipe geometric deformation internal detector with automatic unblocking function according to claim 5, characterized in that: The detection mechanism includes several detection arms, which are evenly distributed along the circumference of the base. One end of each detection arm is hinged to the base, and the other end of each detection arm abuts against the position where the second sealing cup contacts the pipe. The second sealing cup is located between the pipe and the other end of the detection arm. A third spring is provided between each detection arm and the base.

7. The non-metallic pipe geometric deformation internal detector with automatic unblocking function according to claim 1, characterized in that: The head spindle is equipped with a collision prevention head to prevent the detector from traveling too fast or hitting its internal components when passing through bends.

8. The non-metallic pipe geometric deformation internal detector with automatic unblocking function according to claim 7, characterized in that: The anti-collision head is located at the front end in the direction of head spindle displacement, and the anti-collision head is made of explosion-proof metal or explosion-proof polyurethane material.

Images