CN220152178U - Inner wall detection device for gas pipeline - Google Patents

Abstract

The utility model provides a gas pipeline inner wall detection device, which comprises a cylinder body, wherein two circular rings which are parallel to each other are sleeved on the cylinder body, and a spacing adjusting mechanism is connected between the two circular rings; the periphery side of the circular ring is hinged with a plurality of connecting rods; the outer peripheral sides of the two ends of the cylinder body are respectively hinged with a plurality of fixing columns; the number of the connecting rods on each circular ring is the same as that of the fixed columns at one end corresponding to the cylinder body, and the free ends of the connecting rods are hinged with the middle part of one corresponding fixed column; the free end of the fixed column is provided with a roller frame, and the roller frame is provided with a movable wheel; one end of the cylinder body is provided with a detection mechanism. According to the utility model, the distance between the two circular rings is regulated, and the plurality of fixed columns are driven to swing at the same time, so that the opening radius of the movable wheel is regulated, the detection can be carried out in different pipeline inner diameters, the applicability is good, and the operation is simple and convenient; the plurality of moving wheels are unfolded and folded simultaneously, the unfolding radius changes are consistent, the coaxiality error of the cylinder body and the pipeline to be detected is reduced, and the detection quality is improved.

Description

Inner wall detection device for gas pipeline

Technical Field

The utility model relates to the technical field of flaw detection of gas transmission pipelines, in particular to a gas transmission pipeline inner wall detection device.

Background

The pipeline flaw detection operation needs to be carried out comprehensively before and after the pipeline is put into operation, the engineering quantity is huge, and a large amount of manpower, material resources and financial resources are required to be input. In order to ensure the stability of the pipeline, it is generally necessary to perform flaw detection on the pipeline, detect whether there is a crack at the weld joint, detect whether there is a longitudinal crack in the inner wall of the pipeline, and the like. The pipe wall has a certain thickness, so that the crack is difficult to accurately detect from the outside, and therefore, the pipe wall needs to enter the inside of a pipeline for flaw detection. However, because the pipeline is long and the internal environment is bad, some pipelines even have toxic gas and the like remained in the pipeline, and the detection personnel cannot directly enter the pipeline to detect the pipeline. Pipeline robot detection is therefore commonly used. The existing pipeline robot does not have the capacity of adjusting, is only suitable for pipelines with one inner diameter, and is poor in applicability.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: how to adapt to different pipeline inner diameters for detection.

The technical scheme for solving the technical problems is as follows:

the utility model provides a gas pipeline inner wall detection device, which comprises a cylinder body, wherein two circular rings which are parallel to each other are sleeved on the cylinder body, and a spacing adjusting mechanism is connected between the two circular rings; the outer peripheral side of the circular ring is hinged with a plurality of connecting rods, and the free ends of the connecting rods can swing along the direction approaching or separating from the cylinder body; the two outer peripheral sides of the cylinder body are respectively hinged with a plurality of fixing columns, and the free ends of the fixing columns can swing along the direction approaching or separating from the cylinder body; the number of the connecting rods on each circular ring is the same as that of the fixed columns at one end corresponding to the cylinder body, and the free ends of the connecting rods are hinged with the middle part of one corresponding fixed column; the free end of the fixed column is provided with a roller frame, and the roller frame is provided with a movable wheel; one end of the cylinder body is provided with a detection mechanism.

The beneficial effects of the utility model are as follows:

according to the utility model, the distance between the two circular rings is regulated, and the plurality of fixed columns are driven to swing at the same time, so that the opening radius of the movable wheel is regulated, the detection of different inner diameters of pipelines is realized, the applicability is good, and the operation is simple and convenient; simultaneously, a plurality of movable wheels at the same end of the cylinder body are simultaneously unfolded and folded, and the unfolded radius changes are consistent, so that the coaxiality error of the cylinder body and a pipeline to be detected is reduced, and the detection quality is improved.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, the interval adjusting mechanism comprises connecting plates, studs and an internal thread cylinder, wherein the two connecting plates are respectively fixed on the outer peripheral sides of the two circular rings, the studs extend out of the opposite sides of the two connecting plates in opposite directions, two ends of the internal thread cylinder are respectively in threaded connection with the two studs, and the threads of the two studs are opposite in rotation direction.

Through rotating the internal thread section of thick bamboo, control two double-screw bolts stretch out and draw back in the internal thread section of thick bamboo simultaneously, and then control two rings and keep away from in step or lean on tightly, the radius of opening of the removal wheel at the synchronous control barrel both ends of being convenient for has reduced the axiality error of barrel and waiting to detect the pipeline.

Further, the internal thread cylinder is also provided with a rotary disc which is made of plastic or rubber.

The internal thread cylinder is convenient to rotate in a labor-saving way.

Further, the internal thread cylinder is also provided with a rotating part, the outer side of the rotating part is provided with a fixing plate, and the fixing plate is fixed on the outer surface of the cylinder.

The fixed plate is restrained to move along the axial direction relative to the fixed plate by the rotating piece, so that the position of the internal thread cylinder is ensured to be constant, the opening radiuses of the movable wheels at the two ends of the cylinder body are consistent and synchronously change, the cylinder body is prevented from deflecting relative to the pipeline, the parallelism error of the cylinder body and the pipeline to be detected is reduced, and the detection quality is improved.

Further, the fixed plate is located at the middle of the internal thread cylinder, and the fixed plate is located at the middle of the cylinder.

The positioning is convenient, the symmetrical structures of the movable wheels, the circular rings and the like at the two ends of the cylinder body are ensured, the balance is good, and the opening radiuses of the movable wheels are consistent.

Furthermore, the inner side wall of the circular ring is also provided with a plurality of rollers, the axes of the rollers are parallel to the axis of the circular ring, and the rollers are contacted with the cylinder body and can roll along the circumferential direction of the outer side wall of the cylinder body.

The relative positions of the connecting rod and the fixed column are convenient to adapt during installation, and the installation is convenient; through roller and fixed plate coaction, the flexibility is good during the installation, and the installation of being convenient for, stability after the installation is good, the movable wheel that is convenient for synchronous regulation barrel both ends opens the radius.

Further, detection mechanism is including detecting the motor, detects motor coaxial arrangement in the barrel, detects the output shaft of motor and stretches out the barrel and be equipped with the installation section of thick bamboo, and the lateral wall of installation section of thick bamboo is equipped with the probe, and the probe outwards along the radial of installation section of thick bamboo.

The probe can be driven to rotate by the detection motor, so that the inner wall of the pipeline to be detected is circumferentially detected; the detection motor is coaxially arranged in the cylinder, and the distance between the probe and the inner wall of the pipeline to be detected is always the same, so that the detection result in the whole process is reliable and cannot be influenced by the distance change between the probe and the inner wall of the pipeline to be detected, namely, the probe is initially arranged at a proper position, and the detection result in the whole process is reliable.

Furthermore, the probe is a camera, and the free end of the mounting cylinder is also provided with an illuminating lamp.

The camera can be used to shoot the image of waiting to detect the pipeline inner wall, and the light is through installing the free end at the installation section of thick bamboo, and the pipeline inner wall is waited to detect in the illumination on the one hand, and guarantee camera image is clear, and the area is not detected in the place ahead can be illuminated on the one hand, makes the visual angle of camera can shoot the barrier in advance.

Further, the free end of the mounting cylinder is also provided with a top plate, and the extension length of the top plate is larger than that of the illuminating lamp.

When the detection mechanism moves to the end of the pipeline to be detected, the ejector rod props against the obstacle, so that the illuminating lamp is prevented from being collided, and the illuminating lamp is conveniently protected.

Further, each roller frame is also provided with a micro motor for driving the moving wheel.

The moving wheels are driven to rotate by the micro motors, so that resistance is conveniently overcome, and the cylinder body stably advances in the pipeline to be detected.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a side view of fig. 1.

Fig. 3 is an enlarged detail view of the portion a of fig. 1.

Fig. 4 is a schematic structural view of a ring.

In the drawings, the technical features represented by the reference numerals are as follows:

1-a cylinder; 2-a circular ring; 3-connecting rod; 4-fixing columns; 5-a roller frame; 6-moving wheels; 7-a detection mechanism; 8-connecting plates; 9-stud; 10-an internal thread cylinder; 11-a turntable; 12-rotating member; 13-a fixed plate; 14-detecting a motor; 15-mounting a barrel; 16-probe; 17-lighting lamp; 18-top plate; 19-a micro motor; 20-roller.

Detailed Description

The principles and features of the present utility model are described below with examples given for the purpose of illustration only and are not intended to limit the scope of the utility model.

The present utility model is described with reference to fig. 1-4.

The utility model provides a gas pipeline inner wall detection device, which comprises a cylinder body 1, wherein two circular rings 2 which are parallel to each other are sleeved on the cylinder body 1, and a spacing adjusting mechanism is connected between the two circular rings 2; the outer peripheral side of the circular ring 2 is hinged with a plurality of connecting rods 3, and the free ends of the connecting rods 3 can swing along the direction approaching or separating from the cylinder body 1; the two outer peripheral sides of the cylinder body 1 are respectively hinged with a plurality of fixing columns 4, and the free ends of the fixing columns 4 can swing along the direction approaching or separating from the cylinder body 1; the number of the connecting rods 3 on each circular ring 2 is the same as that of the fixed columns 4 at the corresponding end of the cylinder body 1, and the free ends of the connecting rods 3 are hinged with the middle part of the corresponding fixed column 4; the free end of the fixed column 4 is provided with a roller frame 5, and the roller frame 5 is provided with a movable wheel 6; one end of the cylinder 1 is provided with a detection mechanism 7.

Principle of: when the device is used, according to the inner diameter of a pipeline, the distance between the two circular rings 2 is adjusted, the circular rings 2 drive the connecting rod 3 to push or pull the fixed column 4, so that the fixed column 4 swings along the axial direction of the cylinder body 1, the distance between the movable wheels 6 and the cylinder body 1 is changed, and a plurality of movable wheels 6 can be simultaneously contacted with the inner wall of the pipeline to be detected. Then, the utility model is put into the pipeline, and the moving wheel 6 moves along the inner wall of the pipeline, and at the same time, the detection mechanism 7 is started, and the detection mechanism 7 detects the flaw detection inside the pipeline.

In conclusion, the distance between the two circular rings 2 is adjusted, and the plurality of fixed columns 4 are driven to swing at the same time, so that the opening radius of the movable wheel 6 is adjusted, detection adapting to different inner diameters of pipelines is realized, the applicability is good, and the operation is simple and convenient; simultaneously, a plurality of moving wheels 6 at the same end of the cylinder body 1 are simultaneously opened and closed, the opening radius changes consistently, the coaxiality error of the cylinder body 1 and a pipeline to be detected is reduced, and the detection quality is improved.

Further, as shown in fig. 1 and 4: the space adjusting mechanism comprises connecting plates 8, studs 9 and an internal thread cylinder 10, wherein the two connecting plates 8 are respectively fixed on the outer peripheral sides of the two circular rings 2, the studs 9 extend out of opposite sides of the two connecting plates 8 in opposite directions, two ends of the internal thread cylinder 10 are respectively in threaded connection with the two studs 9, and the threads of the two studs 9 are opposite in rotation direction.

By rotating the internal thread cylinder 10, the two studs 9 are controlled to stretch out and draw back in the internal thread cylinder 10 at the same time, so that the two circular rings 2 are controlled to be far away from or close to each other synchronously, the opening radius of the movable wheels 6 at the two ends of the cylinder 1 is controlled conveniently and synchronously, and the coaxiality error of the cylinder 1 and a pipeline to be detected is reduced.

Further, the internal thread cylinder 10 is further provided with a turntable 11, and the turntable 11 is made of plastic or rubber.

Facilitating the labor-saving rotation of the internal thread cylinder 10.

Further, the internal thread cylinder 10 is further provided with a rotating member 12, a fixing plate 13 is arranged on the outer side of the rotating member 12, and the fixing plate 13 is fixed on the outer surface of the cylinder 1.

Note that: the rotating member 12 may be a bearing or other rotating pair, and functions to rotate the internally threaded cylinder 10 relative to the fixed plate 13 and to restrain the fixed plate 13 from moving in the axial direction relative to the fixed plate 13.

The fixed plate 13 is restrained to move along the axial direction relative to the fixed plate 13 by the rotating piece 12, so that the position of the internal thread cylinder 10 is ensured to be constant, the opening radiuses of the movable wheels 6 at the two ends of the cylinder body 1 are consistent and synchronously changed, the cylinder body 1 is prevented from deflecting relative to a pipeline, the parallelism error of the cylinder body 1 and the pipeline to be detected is reduced, and the detection quality is improved.

Further, the fixing plate 13 is located in the middle of the internal thread cylinder 10, and the fixing plate 13 is located in the middle of the cylinder 1.

The positioning is convenient, the symmetrical structures of the movable wheels 6, the circular rings 2 and the like at the two ends of the cylinder body 1 are ensured, the balance is good, and the opening radiuses of the movable wheels 6 are consistent.

Further, as shown in fig. 4: the inner side wall of the circular ring 2 is also provided with a plurality of rollers 20, the axes of the rollers 20 are parallel to the axis of the circular ring 2, and the rollers 20 are contacted with the cylinder 1 and can roll along the circumferential direction of the outer side wall of the cylinder 1.

The relative positions of the connecting rod 3 and the fixed column 4 are convenient to adapt during installation, and the installation is convenient; through roller 20 and fixed plate 13 coaction, the flexibility is good during the installation, and the installation of being convenient for, and stability is good after the installation, and the synchronous movable wheel 6 that adjusts barrel 1 both ends of being convenient for opens the radius.

Further, as shown in fig. 2: the detection mechanism 7 comprises a detection motor 14, the detection motor 14 is coaxially arranged in the cylinder body 1, an output shaft of the detection motor 14 extends out of the cylinder body 1 and is provided with a mounting cylinder 15, a probe 16 is arranged on the outer side wall of the mounting cylinder 15, and the probe 16 faces outwards along the radial direction of the mounting cylinder 15.

The probe 16 can be driven to rotate by the detection motor 14, so that the inner wall of the pipeline to be detected is circumferentially detected; the detection motor 14 is coaxially arranged in the cylinder body 1, and the distance between the probe 16 and the inner wall of the pipeline to be detected is always the same, so that the detection result in the whole process is reliable and cannot be influenced by the change of the distance between the probe 16 and the inner wall of the pipeline to be detected, namely, the probe 16 is initially arranged at a proper position, and the detection result in the whole process is reliable.

Further, the probe 16 is a camera, and the free end of the mounting cylinder 15 is further provided with an illuminating lamp 17.

The camera can be used to shoot the image of waiting to detect the pipeline inner wall, and light 17 can throw light on waiting to detect the pipeline inner wall through installing in the free end of installation section of thick bamboo 15 on the one hand, and guarantee camera image is clear, can throw light on the place ahead not detect the region on the one hand, makes the visual angle of camera can shoot the barrier in advance.

Further, the free end of the mounting cylinder 15 is further provided with a top plate 18, and the protruding length of the top plate 18 is greater than that of the illuminating lamp 17.

When the detection mechanism 7 moves to the end of the pipeline to be detected, the ejector rod props against the obstacle, so that the illuminating lamp 17 is prevented from being collided, and the illuminating lamp 17 is conveniently protected.

Further, as shown in fig. 2: each roller frame 5 is also provided with a micro motor 19 for driving the moving wheel 6.

The moving wheel 6 is driven to rotate by a plurality of micro motors 19, so that the resistance is overcome conveniently, and the cylinder 1 is further enabled to stably advance in a pipeline to be detected.

In the description of the present utility model, it is to be understood that if descriptive terms indicating orientation, direction or positional relationship are present, such as: the directions or positional relationships indicated in the present specification are directions or positional relationships based on the drawings for convenience of understanding of the present utility model and for simplification of description, only, and do not indicate or imply that the parts, elements or integers referred to must have a specific direction, be constructed and operated in a specific direction, and thus are not to be construed as limiting the present utility model.

Further, if an order description term occurs, for example: "first," "second," etc. are used in this specification for convenience in understanding or simplifying the description, for example, in order to distinguish between a plurality of technical features that have the same type or function, but may have to be individually referred to, and this specification may be referred to by a prefix or suffix sequence description term. Thus, no indication or implication of relative importance or an implication of the number of technical features indicated is to be understood. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, if structural relative action description terms are used, for example: "mounted," "connected," "secured," and the like are to be construed broadly, unless otherwise specifically indicated and limited. For example, "mounted," "connected," etc., may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be the communication between the two elements or the interaction relationship between the two elements; the fixing can be integrated fixing or detachable fixing through a fastener; can be directly fixed or fixed through an intermediate medium. The specific meaning of the above descriptive terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances, the context in which it is located, the consistency of the context, etc.

In the present utility model, if a descriptive term containing an attached or connected meaning, e.g., a first feature "on" or "under" a second feature, is not to be interpreted in a limiting sense unless expressly stated or limited otherwise, e.g., the "on" or "under" can be either the direct contact of the first and second features or the indirect contact of the first and second features via an intermediary. The specific meaning of the above descriptive terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances, the context in which it is located, the consistency of the context, etc.

Further, a first feature "above," "over" and "on" a second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments, examples, and features of various embodiments, examples described in this specification may be combined and combined by persons skilled in the art without contradiction, and such combination or combination is intended to fall within the broad scope of the utility model.

While embodiments of the present utility model have been shown and described above, it should be understood that the above embodiments are illustrative and not to be construed as limiting the present utility model, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art in light of the disclosure of the utility model as may be acquired within the scope of the disclosure.

Claims (10)

1. The utility model provides a gas transmission pipeline inner wall detection device which characterized in that: comprises a cylinder body (1), wherein two circular rings (2) which are parallel to each other are sleeved on the cylinder body (1), and a space adjusting mechanism is connected between the two circular rings (2); the outer peripheral side of the circular ring (2) is hinged with a plurality of connecting rods (3), and the free ends of the connecting rods (3) can swing along the direction approaching or separating from the cylinder body (1); the two outer peripheral sides of the cylinder body (1) are respectively hinged with a plurality of fixing columns (4), and the free ends of the fixing columns (4) can swing along the direction approaching or separating from the cylinder body (1); the number of the connecting rods (3) on each circular ring (2) is the same as that of the fixed columns (4) at one end corresponding to the cylinder body (1), and the free ends of the connecting rods (3) are hinged with the middle part of one corresponding fixed column (4); the free end of the fixed column (4) is provided with a roller frame (5), and the roller frame (5) is provided with a moving wheel (6); one end of the cylinder body (1) is provided with a detection mechanism (7).

2. The gas pipeline inner wall detection device according to claim 1, wherein: the interval adjusting mechanism comprises connecting plates (8), studs (9) and an internal thread cylinder (10), wherein the two connecting plates (8) are respectively fixed on the outer peripheral sides of the two circular rings (2), the studs (9) extend out of one opposite side of the two connecting plates (8) in opposite directions, two ends of the internal thread cylinder (10) are respectively in threaded connection with the two studs (9), and the threads of the two studs (9) are opposite in screwing direction.

3. The gas pipeline inner wall detection device according to claim 2, wherein: the internal thread cylinder (10) is also provided with a rotary disc (11), and the rotary disc (11) is made of plastic or rubber.

4. The gas pipeline inner wall detection device according to claim 2, wherein: the internal thread cylinder (10) is also provided with a rotating piece (12), the outer side of the rotating piece (12) is provided with a fixing plate (13), and the fixing plate (13) is fixed on the outer surface of the cylinder body (1).

5. The gas pipeline inner wall detection device according to claim 4, wherein: the fixing plate (13) is positioned in the middle of the internal thread cylinder (10), and the fixing plate (13) is positioned in the middle of the cylinder body (1).

6. The gas pipeline inner wall detection device according to claim 1, wherein: the inner side wall of the circular ring (2) is also provided with a plurality of rollers (20), the axes of the rollers (20) are parallel to the axis of the circular ring (2), and the rollers (20) are contacted with the cylinder body (1) and can roll along the circumferential direction of the outer side wall of the cylinder body (1).

7. The gas pipeline inner wall detection device according to claim 1, wherein: the detection mechanism (7) comprises a detection motor (14), the detection motor (14) is coaxially arranged in the cylinder body (1), an output shaft of the detection motor (14) extends out of the cylinder body (1) and is provided with a mounting cylinder (15), a probe (16) is arranged on the outer side wall of the mounting cylinder (15), and the probe (16) faces outwards along the radial direction of the mounting cylinder (15).

8. The gas pipeline inner wall detection device according to claim 7, wherein: the probe (16) is a camera, and the free end of the mounting cylinder (15) is also provided with an illuminating lamp (17).

9. The gas pipeline inner wall detection device according to claim 8, wherein: the free end of the mounting cylinder (15) is also provided with a top plate (18), and the extension length of the top plate (18) is larger than that of the illuminating lamp (17).

10. The gas pipeline inner wall detection device according to claim 1, wherein: each roller frame (5) is also respectively provided with a micro motor (19) which can be used for driving the moving wheel (6).