A pressure pipe corrosion detection apparatus

Abstract

The utility model relates to pressure pipeline detection technical field, concretely is a kind of pressure pipeline corrosion detection equipment, including detection mechanism and three supporting arms, one end of three supporting arms is connected with detection mechanism by hinging component, the left and right sides of three supporting arms are equipped with the occlusion component for locking hinging component, the end of three supporting arms away from hinging component is rotatably equipped with the roller for being contacted with pipe wall, the position of three supporting arms corresponding roller is equipped with the feedback component for making occlusion component lock hinging component after letting it be contacted with pipe wall;By setting hinging component, occlusion component and feedback component, reached the effect that three supporting arms can automatically contract or expand along pipeline inner diameter, without manually adjusting can be adapted to multiple specifications of pipeline, and when roller is contacted with pipeline inner wall and is under pressure, the hinging place of supporting arm and fixing piece can be automatically locked, make supporting arm inclination keep fixed, ensure the relative distance, angle stability of detection piece and pipeline inner wall.

Description

Technical Field

[0001] This utility model relates to the field of pressure pipeline inspection technology, and in particular to a pressure pipeline corrosion inspection device. Background Technology

[0002] Pressure pipeline corrosion detection equipment is a specialized device used to detect corrosion on the inner or outer walls of industrial pressure pipelines (such as oil and gas pipelines, chemical pipelines, and heating pipelines). Its core function is to identify the degree, location, and type of corrosion in pipelines through various detection technologies, providing data support for pipeline safety assessment, maintenance, and replacement, and preventing safety accidents such as leaks and explosions caused by corrosion.

[0003] A pressure pipeline corrosion detection device disclosed in Chinese Patent Publication No. CN221004303U describes a device that, through a first fixed sleeve, a movable sleeve, a second fixed sleeve, a first hinge block, a limiting rod, a threaded rod, a rotating block, a support rod, a circular plate, a sliding sleeve, a sliding rod, a concave block, a roller, a second hinge block, and a connecting rod, allows for adjustment of the roller's position to accommodate pipes of different sizes, thus improving the device's practicality. However, based on existing pressure pipeline corrosion detection devices and technologies in related fields, current detection devices require measuring the pipe's inner diameter first, then calculating and adjusting the roller's position based on the dimensions. Some devices even require disassembling the original support arm and replacing it with accessories of the corresponding specifications. The entire process necessitates machine downtime and is highly dependent on the operator's experience. Consequently, in scenarios involving multiple pipe types, the above adjustment steps must be repeated every time a section of pipe is switched, leading to frequent detection interruptions and significantly extending the overall operation time. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a pressure pipeline corrosion detection device.

[0005] The objective of this utility model is achieved through the following technical solution: a pressure pipeline corrosion detection device, comprising a detection mechanism, wherein three support arms are movably connected at equal intervals on the outer surface of the detection mechanism, one end of each of the three support arms is connected to the detection mechanism via a hinge assembly, and the left and right sides of each of the three support arms are provided with engagement components for locking the hinge assembly, and the ends of each of the three support arms away from the hinge assembly are rotatably provided with rollers for contacting the pipe wall, and the positions of each of the three support arms corresponding to the rollers are provided with feedback components for causing the engagement components to lock the hinge assembly after contacting the pipe wall, and the inner sides of each of the three support arms are connected to the detection mechanism via arc-shaped elastic telescopic rods.

[0006] Preferably, the detection mechanism includes a fixing member, a detection member is rotatably mounted at the front end of the fixing member, a handle is fixedly mounted at the rear end of the fixing member, and a driving member for controlling the rotation of the detection member is provided inside the fixing member on the side near the detection member.

[0007] Preferably, the hinge assembly includes a fixing seat fixedly installed on the outer surface of the fixing member, a fixing shaft is fixedly installed laterally on the fixing seat, and the support arm has a through hole corresponding to the position of the fixing shaft.

[0008] Preferably, the engagement assembly includes a movable rod slidably disposed on the side of the support arm, the movable rod being Z-shaped, a sleeve being fixedly installed on the side of the support arm, the movable rod being slidably disposed inside the sleeve, and an engagement element being fixedly disposed on the side of the movable rod near the fixed shaft.

[0009] Preferably, the outer surface of the fixed shaft is provided with a flexible layer corresponding to the position of the biting member, the biting member is arc-shaped, and the side of the biting member facing the flexible layer is provided with multiple biting teeth.

[0010] Preferably, the feedback component includes a sliding groove formed on the support arm, a sliding seat slidably disposed inside the sliding groove, an elastic element fixed between the bottom of the sliding seat and the bottom surface of the sliding groove, a gear rotatably disposed on the side of the support arm near the sliding seat, the gear being disposed on the front side of the sliding seat, a movable rod being disposed below the gear, and multiple meshing grooves adapted to the gear being formed on both the sliding seat and the movable rod at positions corresponding to the gear.

[0011] Preferably, the support arm has a movable groove corresponding to the position of the roller, a rotating shaft is horizontally inserted into the center of the roller, the sliding seat has a rotating hole corresponding to the position of the rotating shaft, and the rotating shaft is connected to the rotating hole through a bearing. Beneficial effects

[0012] This pressure pipeline corrosion detection equipment, by setting up a hinge component, a locking component, and a feedback component, achieves the effect that the three support arms can automatically contract or expand according to the inner diameter of the pipeline. It can adapt to various specifications of pipelines without manual adjustment. Furthermore, when the roller contacts the inner wall of the pipeline and is subjected to pressure, it can automatically lock the hinge joint between the support arm and the fixing component, keeping the inclination of the support arm fixed. This ensures that the relative distance and angle between the detection component and the inner wall of the pipeline are stable, reducing the deviation of detection data caused by equipment shaking. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram showing the expanded state of the three support arms of this utility model;

[0015] Figure 2 This is a schematic diagram showing the state of the three arms of this utility model after retraction;

[0016] Figure 3 This is a schematic diagram of the structure of a single support arm of this utility model;

[0017] Figure 4 This is a schematic diagram of the engagement assembly when the roller of this utility model is not under force;

[0018] Figure 5 This is a schematic diagram showing the state of the engagement assembly when the roller of this utility model is subjected to force;

[0019] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A;

[0020] Figure 7 This utility model Figure 5 Enlarged structural diagram at point B;

[0021] Figure 8 This is a schematic diagram of the structure of the fixed shaft of this utility model.

[0022] In the diagram: 1. Detection mechanism; 101. Fixing component; 102. Detection component; 103. Handle; 2. Support arm; 201. Through hole; 202. Movable groove; 3. Hinge assembly; 301. Fixing seat; 302. Fixing shaft; 3021. Flexible layer; 4. Engaging assembly; 401. Movable rod; 402. Sleeve; 403. Engaging component; 4031. Engaging tooth; 5. Roller; 501. Rotating shaft; 6. Feedback assembly; 601. Sliding groove; 602. Sliding seat; 6021. Rotating hole; 603. Elastic component; 604. Gear; 605. Engaging groove; 7. Arc-shaped elastic telescopic rod. Detailed Implementation

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0025] like Figures 1 to 7 As shown, a pressure pipeline corrosion detection device includes a detection mechanism 1. Three support arms 2 are movably connected at equal intervals on the outer surface of the detection mechanism 1. One end of each of the three support arms 2 is connected to the detection mechanism 1 via a hinge assembly 3. Engaging components 4 for locking the hinge assembly 3 are provided on both the left and right sides of each of the three support arms 2. Rollers 5 are rotatably provided at the ends of each of the three support arms 2 away from the hinge assembly 3 for contacting the pipe wall. Feedback components 6 are provided at the positions of the rollers 5 on each of the three support arms 2 to cause the engaging components 4 to lock the hinge assembly 3 after contact with the pipe wall. The inner sides of each of the three support arms 2 are connected to the detection mechanism 1 via arc-shaped elastic telescopic rods 7. The outer surface of the support arms 2 is covered with a rubber layer and smooth Teflon. The smooth Teflon is located on the outer side, which can reduce the friction between the support arm 2 and the pipe wall, thereby preventing scratches on the pipe wall when in contact with it.

[0026] The detection mechanism 1 includes a fixing member 101, a detection member 102 is rotatably mounted at the front end of the fixing member 101, a handle 103 is fixedly mounted at the rear end of the fixing member 101, and a driving member (not shown in the figure) for controlling the rotation of the detection member 102 is provided inside the fixing member 101 on the side near the detection member 102.

[0027] The hinge assembly 3 includes a fixed seat 301 fixedly installed on the outer surface of the fixing member 101. A fixed shaft 302 is horizontally fixedly installed on the fixed seat 301. A through hole 201 is opened on the support arm 2 corresponding to the position of the fixed shaft 302. The engagement assembly 4 includes a movable rod 401 slidably disposed on the side of the support arm 2. The movable rod 401 is Z-shaped. A sleeve 402 is fixedly installed on the side of the support arm 2. The movable rod 401 is slidably disposed inside the sleeve 402. An engagement member 403 is fixedly disposed on the side of the movable rod 401 near the fixed shaft 302. A flexible layer 3021 (made of rubber) is provided on the outer surface of the fixed shaft 302 corresponding to the position of the engagement member 403. The engagement member 403 is arc-shaped. Multiple engagement teeth 4031 are provided on the side of the engagement member 403 facing the flexible layer 3021.

[0028] Feedback component 6 includes a sliding groove 601 formed on the support arm 2. A sliding seat 602 is slidably disposed inside the sliding groove 601. An elastic element 603 (a spring or sheet spring; this is only an example and no specific limitation is imposed) is fixed between the bottom of the sliding seat 602 and the bottom surface of the sliding groove 601. A gear 604 is rotatably disposed on the side of the support arm 2 near the sliding seat 602. A fitting hole (not shown in the figure) is formed at one end of the support arm 2 at the gear 604. The gear 604 is connected to the fitting hole through a bearing (not shown in the figure). By utilizing the bearing, the friction of the gear 604 during rotation can be reduced, and the stability of the gear 604 during rotation can be improved. The gear 604 is disposed on the front side of the sliding seat 602. A movable rod 401 is disposed below the gear 604. Multiple meshing grooves 605 are formed on the sliding seat 602 and the movable rod 401 corresponding to the position of the gear 604. A movable groove 202 is formed on the support arm 2 corresponding to the position of the roller 5. A rotating shaft is horizontally inserted into the center of the roller 5. 501. A rotating hole 6021 is provided on the sliding seat 602 corresponding to the position of the rotating shaft 501. The rotating shaft 501 is connected to the rotating hole 6021 through a bearing. The bearing can reduce the friction when the roller 5 rotates and improve the stability of the roller 5. When the sliding seat 602 slides, the meshing groove 605 on the sliding seat 602 can make the gear 604 rotate. Then, the meshing groove 605 on the movable rod 401 can make the movable rod 401 drive the biting piece 403 to slide to one side of the fixed shaft 302, so that multiple biting teeth 4031 bite together with the flexible layer 3021, thereby automatically locking the hinge of the support arm 2 and the fixed piece 101, keeping the slope of the support arm 2 fixed, thus avoiding the support arm 2 from loosening or angle shifting due to vibration, friction or changes in pipeline direction during the movement of the equipment in the pipeline, ensuring the stability of the relative distance and angle between the detection piece 102 and the inner wall of the pipeline, and reducing the deviation of detection data caused by equipment shaking.

[0029] The work process is as follows:

[0030] S1, such as Figure 1 and Figure 2 As shown, when in use, the detection mechanism 1 can be directly inserted into the pipe. Then, when the three support arms 2 come into contact with the pipe wall, the arc-shaped elastic telescopic rod 7 is used to make the three support arms 2 automatically contract or expand with the inner diameter of the pipe (when the pipe diameter is small, the support arms 2 will cause the arc-shaped elastic telescopic rod 7 to contract, that is, the support arms 2 automatically contract with the inner diameter of the pipe).

[0031] S2, such as Figures 3 to 7 As shown, when the roller 5 contacts the inner wall of the pipe and is subjected to pressure, the roller 5 can cause the sliding seat 602 to squeeze the elastic element 603 and slide towards the detection mechanism 1 through the rotating shaft 501;

[0032] S3, such as Figures 3 to 7 As shown, when the sliding seat 602 slides, the gear 604 can be rotated by the meshing groove 605 provided on the sliding seat 602. Then, by utilizing the cooperation between the gear 604 and the meshing groove 605 provided on the movable rod 401, the movable rod 401 can drive the biting piece 403 to slide towards one side of the fixed shaft 302, thereby allowing multiple biting teeth 4031 to bite together with the flexible layer 3021, thus automatically locking the hinge between the support arm 2 and the fixed piece 101, keeping the inclination of the support arm 2 fixed, thereby avoiding the support arm 2 from loosening or angle shifting due to vibration, friction or changes in pipeline direction during the movement of the equipment in the pipeline, ensuring the relative distance and angle between the detection piece 102 and the inner wall of the pipeline are stable, and reducing the deviation of detection data caused by equipment shaking;

[0033] S4, such as Figure 1 and Figure 2 As shown, the three support arms 2 are symmetrically distributed. Through the balanced force of the arc-shaped elastic telescopic rod 7, the detection mechanism 1 can be automatically centered on the pipeline axis, ensuring that the detection element 102 is in the center position of the pipeline cross-section, which facilitates uniform detection of the entire circumference of the pipeline (the driving element controls the detection element 102 to perform 360° scanning of corrosion), avoiding detection blind spots caused by eccentricity.

[0034] S5, such as Figure 1 and Figure 2 As shown, when the detection mechanism 1 is removed from the pipeline, the pressure of the roller 5 disappears, and the elastic element 603 causes the sliding seat 602 to slide away from the detection mechanism 1. The support arm 2 automatically expands and resets outward under the action of the arc-shaped elastic telescopic rod 7. It can return to the initial state without manual adjustment, which is convenient for subsequent storage or quick switching to the next section of pipeline detection, thus improving work efficiency.

[0035] The detection component 102, the driving component, and the arc-shaped elastic telescopic rod 7 described in this application are all known technologies, therefore their specific structures and working principles are not described in detail.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A pressure pipeline corrosion detection device, characterized in that: The device includes a detection mechanism (1), on the outer surface of which three support arms (2) are movably connected at equal intervals. One end of each of the three support arms (2) is connected to the detection mechanism (1) via a hinge assembly (3). Each of the three support arms (2) has a locking assembly (4) on its left and right sides for locking the hinge assembly (3). Each of the three support arms (2) has a roller (5) rotatably mounted on its end away from the hinge assembly (3) for contacting the pipe wall. Each of the three support arms (2) has a feedback assembly (6) at the position corresponding to the roller (5) for contacting the pipe wall and causing the locking assembly (4) to lock the hinge assembly (3). The inner sides of each of the three support arms (2) are connected to the detection mechanism (1) via an arc-shaped elastic telescopic rod (7).

2. The pressure pipeline corrosion detection equipment according to claim 1, characterized in that: The detection mechanism (1) includes a fixing member (101), a detection member (102) is rotatably provided at the front end of the fixing member (101), a handle (103) is fixedly installed at the rear end of the fixing member (101), and a driving member for controlling the rotation of the detection member (102) is provided on the side of the fixing member (101) near the detection member (102).

3. The pressure pipeline corrosion detection equipment according to claim 2, characterized in that: The hinge assembly (3) includes a fixed seat (301) fixedly installed on the outer surface of the fixing member (101), a fixed shaft (302) is fixedly installed horizontally on the fixed seat (301), and the support arm (2) has a through hole (201) corresponding to the position of the fixed shaft (302).

4. The pressure pipeline corrosion detection equipment according to claim 3, characterized in that: The engagement assembly (4) includes a movable rod (401) slidably disposed on the side of the support arm (2). The movable rod (401) is Z-shaped. A sleeve (402) is fixedly installed on the side of the support arm (2). The movable rod (401) is slidably disposed inside the sleeve (402). An engagement element (403) is fixedly disposed on the side of the movable rod (401) near the fixed shaft (302).

5. The pressure pipeline corrosion detection equipment according to claim 4, characterized in that: The outer surface of the fixed shaft (302) is provided with a flexible layer (3021) corresponding to the position of the biting member (403). The biting member (403) is arc-shaped, and the side of the biting member (403) facing the flexible layer (3021) is provided with multiple biting teeth (4031).

6. The pressure pipeline corrosion detection equipment according to claim 5, characterized in that: The feedback component (6) includes a sliding groove (601) opened on the support arm (2). A sliding seat (602) is slidably provided inside the sliding groove (601). An elastic element (603) is fixed between the bottom of the sliding seat (602) and the bottom surface of the sliding groove (601). A gear (604) is rotatably provided on the side of the support arm (2) near the sliding seat (602). The gear (604) is located on the front side of the sliding seat (602). The movable rod (401) is located below the gear (604). The sliding seat (602) and the movable rod (401) are each provided with a plurality of meshing grooves (605) that are adapted to the position of the gear (604).

7. The pressure pipeline corrosion detection equipment according to claim 6, characterized in that: The support arm (2) has a movable groove (202) corresponding to the position of the roller (5). A rotating shaft (501) is inserted horizontally at the center of the roller (5). The sliding seat (602) has a rotating hole (6021) corresponding to the position of the rotating shaft (501). The rotating shaft (501) is connected to the rotating hole (6021) through a bearing.

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