A detection device for the welded joint position of a directly buried heat supply pipeline

Abstract

The present invention relates to the technical field of pipeline weld joint detection, and specifically provides a detection device for the weld joint position of directly buried heating pipelines, including: two installation components with adjustable diameters, a detection mechanism is installed between the two installation components, the detection mechanism moves circumferentially along the installation components and detects the weld seam, and a positioning and supporting mechanism is also installed between the two installation components and the detection mechanism. In the present invention, installation components for installing the detection mechanism on the pipeline are installed on both sides of the detection mechanism, so that the two sides of the detection mechanism are kept balanced during the moving detection process, improving the stability of the movement of the detection mechanism. At the same time, a positioning and supporting mechanism is also installed between the detection mechanism and the two installation components. The positioning and supporting mechanism is used to support and guide the detection mechanism, not only improving the stability of the detection mechanism when rotating to detect the weld seam, but also avoiding that when the detection mechanism rotates to the lower part of the pipeline, the detection mechanism sags under its own gravity and disengages from the weld seam or shakes.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline weld detection, and specifically provides a device for detecting the position of a welded joint of a directly buried heat supply pipeline. Background Technique

[0002] A directly buried heat supply pipeline refers to a pipeline directly laid underground for transporting hot water or steam. The welded joint of a directly buried heat supply pipeline, as a key part of pipeline connection, its quality is directly related to the sealing performance and durability of the entire pipeline system. Therefore, the detection of the position of the welded joint of a directly buried heat supply pipeline is an important link to ensure the safe operation and long-term stability of the pipeline.

[0003] Currently, there are also detection instruments for detecting pipeline welds. An installation component is sleeved and fixed on one of the pipelines, and a movable trolley is installed on the installation component. On one side of the movable trolley, an ultrasonic flaw detection probe for circumferentially detecting the weld is installed through a mounting bracket, and the ultrasonic flaw detection probe is used to detect the sealing performance and welding quality of the pipeline weld.

[0004] However, when the above detection instrument detects the pipeline weld, during the process of the movable trolley and the detection probe moving along the installation component, it is easy to form a cantilever beam state because the side of the mounting bracket far from the movable trolley is not connected, and the movable trolley and the detection probe are prone to sag under their own gravity, resulting in the detection probe being difficult to accurately detect the weld, which affects the accuracy of weld detection. Summary of the Invention

[0005] In view of the above problems, the embodiments of the present application provide a device for detecting the position of a welded joint of a directly buried heat supply pipeline to solve the technical problems in the related art.

[0006] To achieve the above object, the embodiments of the present application provide the following technical solution: A device for detecting the position of a welded joint of a directly buried heat supply pipeline, where the welded joint of the directly buried heat supply pipeline is a weld formed after two pipelines are welded. The detection device includes: two installation components with adjustable diameters, which are used to adapt to pipelines with different diameters, and a detection mechanism is installed between the two installation components.

[0007] The detection mechanism moves circumferentially along the installation component and detects the weld, and a positioning and supporting mechanism is also installed between the two installation components and the detection mechanism.

[0008] The detection mechanism includes two mounting seats. The mounting seats are slidably connected to the corresponding mounting components through a locking group. A detection driving group for driving the mounting seats to move along the mounting components is installed on the mounting seats. A fixing frame is installed between the two mounting seats, and a support component and two detection probes are installed on the fixing frame. The detection probes are ultrasonic flaw detection probes and are made of highly wear-resistant materials. The detection probes are used in cooperation with the coupling agent applied to the weld when detecting the weld.

[0009] Each of the detection probes is connected to a detection instrument through a wire. The detection instrument includes a signal processing module and a display. The signal processing module is used to process the detection signals fed back by the detection probes and send signals to the display. The display displays images according to the signals sent by the signal processing module.

[0010] In a possible implementation manner, the detection driving group includes a mounting groove opened on the mounting seat. A rotating shaft is rotatably connected in the mounting groove. A traveling roller that rolls in contact with the clamping strip is fixedly sleeved on the rotating shaft. A driving source for driving the rotating shaft to rotate is also installed in the mounting groove.

[0011] In a possible implementation manner, the support component is two supporting wheels rotatably installed on the fixing frame to support the middle part of the fixing frame. The two detection probes are located between the two supporting wheels.

[0012] In a possible implementation manner, the locking group includes L-shaped frames installed at the four top corners of the mounting seat. A sliding member is slidably connected to the horizontal section of the L-shaped frame. A locking roller that abuts against the side wall in the width direction of the clamping strip is rotatably connected to the sliding member. A screw rod is rotatably connected to the L-shaped frame, and the screw rod is connected to the sliding member in a threaded fit manner.

[0013] In a possible implementation manner, the mounting component is a clamping strip. The clamping strip is wound around the outer wall of the pipeline and forms an annular structure after being closely attached to the outer wall of the pipeline. The clamping strip can be unfolded so as to be sleeved on the outer wall of the pipeline. The two ends of the clamping strip are fixed through a fastening component. A gasket is installed in the middle of the inner ring surface of the clamping strip that fits with the outer wall of the pipeline.

[0014] The positioning and supporting mechanism includes two connecting bars, which are respectively located on both sides of the fixing frame arranged along its width direction. The end face of the mounting seat far from the mounting component is detachably connected to the two connecting bars through a connecting frame. The connecting bars are slidably connected to the two mounting components respectively through two locking and guiding groups symmetrically arranged along their length directions. The middle part of the connecting bars abuts against the weld through a positioning and clamping group. An inclined connecting rod is connected between the side wall of the connecting frame located on the mounting seat and the middle part of the connecting bars. A supporting group for supporting the fixing frame is jointly installed in the middle of the two connecting bars.

[0015] In a possible implementation manner, the locking guiding group includes a clamping seat installed on the connecting strip. A resisting roller is rotatably connected to the end face of the clamping seat close to the clamping strip. Two symmetrically arranged sliding grooves are formed in the clamping seat. An inverted U-shaped clamping plate is slidably connected in the sliding grooves. The resisting roller is located between the corresponding two clamping plates. Clamping rollers are rotatably connected to the opposite faces of the vertical sections of the two clamping plates. A locking driving assembly for driving the two clamping plates to move and abut against the two side walls in the width direction of the clamping strip is further installed on the clamping seat.

[0016] In a possible implementation manner, the supporting group includes a transverse fixing frame connected to the two connecting strips by screws. The transverse fixing frame is in the structure of a strip-shaped plate with a convex middle part. A supporting bracket is installed on the end face of the middle part of the fixing frame away from the pipeline. Uniformly arranged supporting abutting spring rods are installed in the middle of the transverse fixing frame. The transverse fixing frame is elastically abutted against the supporting bracket through the supporting abutting spring rods.

[0017] In a possible implementation manner, slots are installed on the opposite faces of the two mounting seats. Plugging strips are installed on both sides of the middle part of the supporting bracket along its width direction. A receiving groove is formed at one end of the plugging strip away from the supporting bracket. A plug board is slidably installed in the receiving groove through a supporting spring. The plug board is plugged into the slot.

[0018] In a possible implementation manner, the positioning clamping and abutting group includes an inverted U-shaped clamping and abutting seat installed on the side of the connecting strip close to the pipeline. Ball bearings that are in rolling contact with the outer wall of the pipeline are installed on the end faces of the two vertical sections of the clamping and abutting seat. A positioning assembly is installed between the two vertical sections of the clamping and abutting seat.

[0019] In a possible implementation manner, the positioning assembly includes spring grooves formed on the opposite faces of the two vertical sections of the clamping and abutting seat. Abutting rods are slidably installed in the spring grooves through pushing springs. Ball bearings are installed on the opposite faces of the two abutting rods.

[0020] One or more of the above technical solutions in the embodiments of the present invention have at least the following beneficial effects: 1. In the present invention, mounting components for mounting it on a pipeline are installed on both sides of the detection mechanism, so that the detection mechanism maintains balance on both sides during the moving detection process, improving the stability of the movement of the detection mechanism. At the same time, a positioning and supporting mechanism is also installed between the detection mechanism and the two mounting components. The detection mechanism is supported and guided by the positioning and supporting mechanism, which not only improves the stability of the detection mechanism when rotating to detect the weld seam, but also avoids the situation that when the detection mechanism rotates to the lower part of the pipeline, the detection mechanism sags under its own gravity and separates from or shakes the weld seam, resulting in a reduction in the detection accuracy of the pipeline weld seam.

[0021] 2. In the present invention, the connecting bar not only guides the movement of the mounting seat through the two locking and guiding groups connected thereto, but also forms a triangular structure with the inclined connecting rod and the connecting frame, thereby further improving the stability of the detection mechanism during movement. Moreover, the supporting group can also elastically push against the detection mechanism to prevent the detection mechanism from sagging under its own gravity when moving below the pipeline, which may affect the detection accuracy.

[0022] 3. In the present invention, the distance between the mounting component and the weld seam is positioned by aligning two positioning and clamping groups with the weld seam and rolling against the weld seam. Moreover, under the positioning action of the locking and guiding group to which the mounting component is slidably connected, the circularity of the mounting component when installed on the pipeline is improved, preventing the mounting component from shifting, and further improving the accuracy of pipeline weld detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0024] Figure 1 is the overall three-dimensional structure schematic diagram of the present invention.

[0025] Figure 2 is Figure 1 the enlarged view of part A in

[0026] Figure 3 is the structure schematic diagram of the mounting component, detection mechanism and positioning and supporting mechanism of the present invention.

[0027] Figure 4 is the structure schematic diagram of the mounting component and the positioning and supporting mechanism of the present invention.

[0028] Figure 5 is the sectional structure schematic diagram of the positioning and supporting mechanism of the present invention.

[0029] Figure 6 is the structure schematic diagram of the slot, plug-in strip, plug board and supporting spring of the present invention.

[0030] Figure 7 is the partial three-dimensional structure schematic diagram of the detection mechanism of the present invention.

[0031] Figure numerals: 1, pipeline; 2, weld; 3, installation assembly; 30, gasket; 4, detection mechanism; 40, mounting seat; 401, slot; 402, plug strip; 403, plug plate; 404, support spring; 41, locking group; 410, L-shaped frame; 411, sliding member; 412, locking roller; 413, screw; 42, detection drive group; 420, mounting slot; 421, rotating shaft; 422, walking roller; 43, fixed frame; 44, detection probe ; 45. Support assembly; 5. Positioning support mechanism; 50. Connecting frame; 51. Locking guide group; 510. Card seat; 511. Resistance roller; 512. Card clamping plate; 513. Resistance roller; 514. Locking drive assembly; 52. Positioning card resistance group; 520. Card resistance seat; 521. Resistance rod; 522. Push spring; 53. Oblique connecting rod; 54. Support group; 540. Transverse fixed frame; 541. Support frame; 542. Support and push spring rod; 55. Connecting strip. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] See also Figure 1 A device for detecting the position of a weld of a direct-buried heating pipeline. The weld of the direct-buried heating pipeline is a weld 2 formed after two pipelines 1 are welded. The detection device includes: two installation components 3 with adjustable diameters. The installation components 3 are used for pipelines 1 with different diameters. A detection mechanism 4 is installed between the two installation components 3.

[0035] See also Figure 1 The detection mechanism 4 moves circumferentially along the installation component 3 and detects the weld 2. A positioning and supporting mechanism 5 is also installed between the two installation components 3 and the detection mechanism 4.

[0036] See also Figure 1 and Figure 3 The installation component 3 is a clamp strip, which is wound around the outer wall of the pipe 1 and tightly attached to the outer wall of the pipe 1 to form an annular structure. The clamp strip can be unfolded, and the unfolded setting of the clamp strip can be easily sleeved on the outer wall of the pipe 1. The two ends of the clamp strip are fixed by fastening components, and a gasket 30 is installed in the middle of the inner ring surface where the clamp strip fits the outer wall of the pipe 1.

[0037] The fastening assembly for connecting and fixing both ends of the clamp strip is an existing structure. The gasket 30 connected to the clamp strip is used to increase the distance between both sides of the clamp strip in its width direction and the pipeline 1, so as to facilitate the sliding connection between the detection mechanism 4, the positioning and supporting mechanism 5, and the clamp strip.

[0038] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 7 , the detection mechanism 4 includes two mounting seats 40. The mounting seats 40 are slidably connected to the corresponding mounting components 3 through the locking group 41. A detection drive group 42 for driving it to move along the mounting component 3 is installed on the mounting seats 40. A fixing frame 43 is installed between the two mounting seats 40. A support component 45 and two detection probes 44 are installed on the fixing frame 43; the detection probes 44 are ultrasonic flaw detection probes, and the detection probes 44 are made of highly wear-resistant materials. The detection probes 44 are used in cooperation with the coupling agent applied to the weld 2 when detecting the weld 2.

[0039] Each of the detection probes 44 is connected to a detection instrument through a wire. The detection instrument includes a signal processing module and a display. The signal processing module is used to process the detection signals fed back by the detection probes 44 and send signals to the display; the display displays images according to the signals sent by the signal processing module (the above are all existing technologies and are not shown in the figure).

[0040] During detection, the detection mechanism 4 and the positioning and supporting mechanism 5 are installed on the outer walls of the two pipelines 1 through the mounting component 3, and the two detection probes 44 are respectively aligned with both sides of the weld 2. The coupling agent used in cooperation with the detection probes 44 is applied to the weld 2 of the pipeline 1. Then, the detection drive group 42 drives the mounting seats 40 to perform a circular motion along the mounting component 3, and the positioning and supporting mechanism 5 guides and supports the circular motion of the detection mechanism 4. During this process, the detection probes 44 detect the weld 2.

[0041] During the rotation of the detection mechanism 4, the support and guidance of the positioning and supporting mechanism 5 for the detection mechanism 4 not only improve the stability of the detection mechanism 4 when rotating to detect the weld 2, but also avoid that when the detection mechanism 4 rotates to the lower part of the pipeline 1, the detection mechanism 4 sags under its own gravity and disengages from or shakes the weld 2, resulting in a decrease in the detection accuracy of the weld 2.

[0042] Refer to Figure 1 , Figure 3 and Figure 6, the detection drive group 42 includes an installation groove 420 formed on the installation base 40. A rotating shaft 421 is rotatably connected in the installation groove 420. A walking roller 422 that rolls in contact with the clamp strip is fixedly sleeved on the rotating shaft 421. A drive source (such as an electric motor) for driving the rotation of the rotating shaft 421 is also installed in the installation groove 420, and this drive source is not shown in the figure.

[0043] The drive source drives the rotating shaft 421 to drive the walking roller 422 to rotate. The walking roller 422 rotates through the frictional force between it and the clamp strip and drives the installation base 40 to move along the clamp strip, so as to realize the circumferential movement of the detection mechanism 4 along the clamp strip to detect the circumference of the weld 2.

[0044] Referring to FIG. 7, the support assembly 45 is two supporting wheels rotatably installed on the fixing frame 43 to support the middle part of the fixing frame 43. The supporting wheels are used to increase the supporting force of the fixing frame 43. The two detection probes 44 are located between the two supporting wheels.

[0045] Referring to Figure 1 、 Figure 2 and Figure 3 , the locking group 41 includes L-shaped frames 410 installed at the four corners of the installation base 40. A sliding member 411 is slidably connected to the horizontal section of the L-shaped frame 410. A locking roller 412 that abuts against the side wall in the width direction of the clamp strip is rotatably connected to the sliding member 411. A screw rod 413 is rotatably connected to the L-shaped frame 410, and the screw rod 413 is connected to the sliding member 411 in a threaded fit manner.

[0046] By rotating the screw rod 413, the sliding member 411 drives the locking roller 412 to press against the side wall of the clamp strip, so as to realize the sliding connection between the installation base 40 and the clamp strip, so as to facilitate the detection drive group 42 to drive the installation base 40 to move stably along the clamp strip.

[0047] Referring to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , the positioning and supporting mechanism 5 includes two connecting strips 55. The two connecting strips 55 are respectively located on both sides of the fixing frame 43 arranged along its width direction, that is, the two installation bases 40 are located between the two connecting strips 55. The end face of the installation base 40 away from the installation component 3 is detachably connected to the two connecting strips 55 through a connecting frame 50. The connecting strips 55 are respectively slidably connected to the two installation components 3 through two locking and guiding groups 51 symmetrically arranged along their length directions. The middle part of the connecting strip 55 abuts against the weld 2 through a positioning and clamping group 52. An inclined connecting rod 53 is connected between the side wall of the connecting frame 50 located on the installation base 40 and the middle part of the connecting strip 55. A supporting group 54 for supporting the fixing frame 43 is jointly installed in the middle parts of the two connecting strips 55.

[0048] The connecting frame 50 and the inclined connecting rod 53 can be replaced according to the diameter of the pipeline 1 to be detected, so that the detection device is suitable for detecting pipelines 1 with different diameters.

[0049] When the installation component 3 is installed on the outer wall of the pipeline 1, the positioning card abutting group 52 is aligned with the weld 2 and rolls against both sides of the weld 2, so as to position the distance between the installation component 3 and the weld 2. The positioning function of the locking guiding group 51 also improves the circularity when the clamp of the installation component 3 is installed on the pipeline 1, avoiding the deviation of the installation component 3 and affecting the accuracy of the detection mechanism 4 for detecting the weld 2.

[0050] The connecting bar 55 not only guides the movement of the mounting seat 40 through the two locking guiding groups 51 connected thereto, but also forms a triangular structure with the inclined connecting rod 53 and the connecting frame 50, thereby further improving the stability when the detection mechanism 4 moves. Moreover, the supporting group 54 can also elastically push against the detection mechanism 4 to prevent the detection mechanism 4 from sagging under its own gravity when moving to the lower part of the pipeline 1 and affecting the detection accuracy.

[0051] Refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 5 The locking guiding group 51 includes a clamping seat 510 installed on the connecting bar 55. A resisting roller 511 is rotatably connected to the end face of the clamping seat 510 close to the clamp strip. Two symmetrically arranged sliding grooves are formed on the clamping seat 510. An inverted U-shaped clamping plate 512 is slidably connected in the sliding grooves. The resisting roller 511 is located between the corresponding two clamping plates 512. Opposite surfaces of the vertical sections of the two clamping plates 512 are rotatably connected with pressing rollers 513. The clamping seat 510 is also provided with a locking driving component 514 for driving the two clamping plates 512 to move and abut against the two side walls in the width direction of the clamp strip. The locking driving component 514 can be a bidirectional threaded rod, and the bidirectional threaded rod is connected to the two clamping plates 512 by means of threaded cooperation.

[0052] The clamping seat 510 is slidably installed on the clamp strip by clamping the clamp strip with the two clamping plates 512. The whole clamping plate 512 is in rolling connection with the side wall of the clamp strip through the pressing rollers 513, so as to facilitate the mounting seat 40 to drive the connecting bar 55 and the clamping seat 510 to move along the circumference of the clamp strip.

[0053] Refer to Figure 2 、 Figure 3 、 Figure 4 and Figure 7, the supporting group 54 includes a transverse fixing frame 540 connected to two connecting bars 55 by screws. The transverse fixing frame 540 is in the structure of a strip plate with a convex middle part. A supporting bracket 541 is installed on the end face of the middle part of the fixing frame 43 away from the pipeline 1. Uniformly arranged supporting and pushing spring rods 542 are installed in the middle of the transverse fixing frame 540. The transverse fixing frame 540 is elastically pressed against the supporting bracket 541 through the supporting and pushing spring rods 542.

[0054] The transverse fixing frame 540 can be replaced according to the diameter of the pipeline 1 to be detected, so that the detection device is suitable for detecting pipelines 1 with different diameters.

[0055] When the detection mechanism 4 rotates to the lower part of the pipeline 1, under the connecting and supporting action of the connecting bars 55 on both sides of the detection mechanism 4, the falling distance is reduced. At the same time, the transverse fixing frame 540 between the two connecting bars 55 presses against the supporting bracket 541 through the elastic force of the supporting and pushing spring rods 542. The supporting bracket 541 supports the fixing frame 43 so that the detection probe 44 always keeps in contact with the weld 2 and conducts stable detection, thereby improving the accuracy of the detection device for detecting the weld 2.

[0056] Refer to Figure 1 、 Figure 2 、 Figure 3 And Figure 6 , on the opposite faces of the two mounting seats 40, slots 401 are installed. On both sides of the middle part of the supporting bracket 541 arranged along its width direction, inserting strips 402 are installed. At one end of the inserting strip 402 away from the supporting bracket 541, a receiving groove is opened. A plug board 403 is slidably installed in the receiving groove through a supporting spring 404. The plug board 403 is inserted into the slot 401.

[0057] A shifting board is installed on the inserting strip 402 and slidably penetrates through the receiving groove. The shifting board is used to push the plug board 403 to move into the receiving groove, so that after the plug board 403 is aligned with the slot 401, it can be inserted under the restoring force of the supporting spring 404, so that the supporting bracket 541 and the mounting seat 40 support each other, further preventing the mounting seat 40 from falling under its own gravity.

[0058] Refer to Figure 1 、 Figure 3 、 Figure 4 And Figure 5 , the positioning and clamping group 52 includes an inverted U-shaped clamping seat 520 installed on the side of the connecting bar 55 close to the pipeline 1. On the end faces of the two vertical sections of the clamping seat 520, balls that are in rolling contact with the outer wall of the pipeline 1 are installed. A positioning component is installed between the two vertical sections of the clamping seat 520; the positioning component includes spring grooves opened on the opposite faces of the two vertical sections of the clamping seat 520. A push rod 521 is slidably installed in the spring groove through a top push spring 522. Balls are installed on the opposite faces of the two push rods 521.

[0059] When the clamping seat 520 clamps at the weld 2, the weld 2 is located between the two vertical sections of the clamping seat 520. Under the action of the pushing spring 522, the pushing rod 521 contacts the weld 2 through the connected balls thereon, so as to position the distance between the weld 2 and the clamping strip, facilitating the alignment of the detection probe 44 with the weld 2 for detection. The balls connected to the vertical sections of the clamping seat 520 and the balls connected to the pushing rod 521 are both used to reduce the frictional force between the clamping seat 520 and the pipeline 1 and the weld 2 during the movement process.

[0060] Specifically, annular grooves are formed on both the clamping roller 513 and the locking roller 412, and the side wall of the clamping strip is clamped in the annular groove (not shown in the figure), preventing the axial movement of the clamping roller 513 and the locking roller 412.

[0061] Refer to Figures 1 - 7 , during operation, the clamping strip is unfolded and sleeved on the outer wall of the pipeline 1, and the positioning and supporting mechanism 5 is clamped on the weld 2 of the pipeline 1 to position the distance between the two clamping strips and the weld 2 and the circularity of the clamping strip sleeving. Then, the two ends of the clamping strip are fixed by the fastening assembly. At the same time, the detection mechanism 4 and the positioning and supporting mechanism 5 are also installed on the outer walls of the two pipelines 1, and the two detection probes 44 are respectively aligned with both sides of the weld 2. The coupling agent used in cooperation with the detection probe 44 is applied to the weld 2 of the pipeline 1. Then, the detection drive group 42 drives the mounting seat 40 to perform circular motion along the mounting assembly 3, and the positioning and supporting mechanism 5 guides and supports the circular motion of the detection mechanism 4. During this process, the detection probe 44 detects the weld 2. During the rotation of the detection mechanism 4, the positioning and supporting mechanism 5 not only supports and guides the detection mechanism 4, thereby improving the stability of the detection mechanism 4 rotating to detect the weld 2, but also avoids that when the detection mechanism 4 rotates to the lower part of the pipeline 1, the detection mechanism 4 sags under its own gravity and disengages from or shakes with the weld 2, resulting in a reduction in the detection accuracy of the weld 2.

[0062] When the detection probe 44 detects a defect in the weld 2, the detection probe 44 feeds back a signal. The signal fed back by the detection probe 44 is transmitted to the processing module, and the signal processing module processes the signal fed back by the detection probe 44. The signal processing module sends a signal to the display, and the display shows an image according to the signal sent by the signal processing module. The staff judges and processes the situation of the defect in the weld 2 according to the image displayed on the display.

[0063] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0064] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "connected", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A detection device for the welded joint position of a directly buried heating pipeline, where the welded joint of the directly buried heating pipeline is the weld formed after welding two pipelines. The detection device includes: Two mounting components with adjustable diameters are used for pipes with different diameters, and the characteristic is that a detection mechanism is installed between the two mounting components; The detection mechanism moves circumferentially along the installation assembly and detects the weld, and a positioning support mechanism is also installed between the two installation assemblies and the detection mechanism; The detection mechanism includes two mounting seats, which are slidably connected to the corresponding mounting components through a locking group, and a detection drive group is installed on the mounting seat to drive it to move along the mounting component. A fixing frame is installed between the two mounting seats, and a support component and two detection probes are installed on the fixing frame; The positioning support mechanism includes two connecting bars, which are respectively located on both sides of the fixing frame arranged along the width direction thereof, and the end surface of the mounting seat away from the mounting assembly is detachably connected to the two connecting bars through the connecting frame, and the connecting bar is slidably connected to the two mounting assemblies respectively through two locking guide groups symmetrically arranged along the length direction thereof, and the middle part of the connecting bar is abutted against the weld by the positioning card group, and the side wall of the connecting frame located on the mounting seat is connected to the middle part of the connecting bar by an oblique connecting rod, and a supporting group for supporting the fixing frame is commonly installed in the middle part of the two connecting bars; The supporting group includes a transverse fixing frame connected to two connecting strips by screws, the transverse fixing frame is a strip plate structure with a raised middle part, a supporting frame is installed in the middle part of the fixing frame away from the end face of the pipeline, and evenly arranged supporting push spring rods are installed in the middle part of the transverse fixing frame. The transverse fixing frame is elastically pressed against the supporting frame through the supporting push spring rods.

2. The detection device for the welded joint position of a directly buried heating pipeline according to claim 1, wherein: The installation component is a clamp strip, which is wrapped around the outer wall of the pipe and tightly attached to the outer wall of the pipe to form an annular structure. The clamp strip can be unfolded so that it can be sleeved on the outer wall of the pipe. The two ends of the clamp strip are fixed by fastening components, and a gasket is installed in the middle of the inner ring surface where the clamp strip fits the outer wall of the pipe.

3. The detection device for the welded joint position of a directly buried heat supply pipeline according to claim 1, characterized in that: The locking guide group includes a card seat installed on the connecting strip, the card seat is rotatably connected to a resistance roller near the end face of the clamping strip, two symmetrically arranged sliding grooves are provided on the card seat, an inverted clamping plate is slidably connected in the sliding groove, the resistance roller is located between the two corresponding clamping plates, the opposite surfaces of the vertical sections of the two clamping plates are rotatably connected to the clamping rollers, and a locking drive component is also installed on the card seat to drive the two clamping plates to move and contact the two side walls in the width direction of the clamping strip.

4. The welding joint position detection device for directly buried heating pipelines according to claim 1, characterized in that: The positioning abutment group includes an inverted abutment seat installed on one side of the connecting strip close to the pipeline, and the end faces of the two vertical sections of the abutment seat are both equipped with balls that roll in contact with the outer wall of the pipeline, and a positioning component is installed between the two vertical sections of the abutment seat.

5. The detection device for the welded joint position of a directly buried heat supply pipeline according to claim 1, wherein: The locking group includes an L-shaped frame installed at the four top corners of the mounting seat, the horizontal section of the L-shaped frame is slidably connected to a sliding member, the sliding member is rotatably connected to a locking roller that is tightly pressed against the side wall in the width direction of the clamp strip, the L-shaped frame is rotatably connected to a screw rod, and the screw rod is connected to the sliding member by threaded cooperation.

6. The detecting device for the welded joint position of the directly buried heating pipeline according to claim 1, wherein: Slots are installed on the opposite surfaces of the two mounting seats, and plug-in strips are installed on both sides of the middle part of the support frame along its width direction. A storage groove is opened at one end of the plug-in strip away from the support frame, and a plug-in plate is slidably installed on the storage groove through a supporting spring, and the plug-in plate is plugged into the slot.

7. The detecting device for the welded joint position of the directly buried heat supply pipeline according to claim 4, wherein: The positioning component includes spring grooves formed on the opposite surfaces of the two vertical segments of the clamping base. A push rod is slidably installed in the spring groove through a pushing spring, and balls are installed on the opposite surfaces of the two push rods.

8. The detecting device for the welded joint position of the directly buried heat supply pipeline according to claim 1, wherein: The detection driving group includes an installation groove formed on the installation base. A rotating shaft is rotatably connected in the installation groove. A walking roller that is in rolling contact with the clamping strip is fixedly sleeved on the rotating shaft. A driving source for driving the rotating shaft to rotate is also installed in the installation groove.

9. The detecting device for the welded joint position of the directly buried heat supply pipeline according to claim 1, wherein: The support component is two supporting wheels that are rotatably installed on the fixed frame and support the middle part of the fixed frame. The two detection probes are located between the two supporting wheels.

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