Nondestructive testing device for circumferential weld of steel pipe
Patent Information
- Application Number
- CN202421354416.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-06-13
AI Technical Summary
The prior art requires manual movement of the probe around the surface of the steel pipe when detecting the welds of the steel pipe ring, which is more troublesome.
A non-destructive detection device for steel pipe ring welds is designed, including a support part, a baffle, an ultrasonic flaw detector and a driving part. The support part is an inclined surface, and the baffle blocks the steel pipe to roll on the inclined surface, and the driving part drives the baffle to move along the inclined surface, realizing automatic movement of the probe.
Through the use of the device, the steel pipe rolls on the support surface under the action of its own gravity, avoiding the need to manually move the probe, simplifying the detection process and improving the detection efficiency.
Smart Images
Figure CN222896130U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of weld detection, in particular to a nondestructive detection device for a steel pipe girth weld. Background Art
[0002] For some steel pipes with girth welds and air tightness requirements, the girth welds on the steel pipes need to be inspected after the steel pipes are manufactured to determine whether the welds are defective. If the welds are defective, the steel pipes will be treated as defective products. Currently, when inspecting the girth welds of steel pipes, the girth welds can be inspected by holding the probe of the ultrasonic flaw detector against the position of the outer surface of the steel pipe corresponding to the girth weld. However, in the process of inspecting the girth welds of steel pipes, the probe needs to be manually moved in a circle around the surface of the steel pipe to comprehensively inspect the entire girth weld, which is more troublesome when inspecting the girth welds of steel pipes. Utility Model Content
[0003] In view of this, the purpose of the utility model is to provide a nondestructive testing device for the girth weld of a steel pipe, so as to solve the troublesome technical problem when using the existing technology to test the girth weld of a steel pipe.
[0004] The utility model is realized by the following technical solutions:
[0005] A nondestructive testing device for a steel pipe girth weld comprises a support portion, a baffle, an ultrasonic flaw detector and a driving portion, wherein the support portion is used to support the steel pipe, and the supporting surface of the support portion used to support the steel pipe is an inclined surface inclined up and down, the baffle is located on the side of the lower end of the steel pipe supported on the supporting surface close to the supporting surface, the baffle is used to block the steel pipe, the ultrasonic flaw detector is used to detect the girth weld of the steel pipe, the driving portion is arranged on the support portion and connected to the baffle, the driving portion is used to drive the baffle to move toward the lower end of the supporting surface along the inclined direction of the supporting surface, and the driving portion is also used to drive the baffle to move toward the upper end of the supporting surface along the inclined direction of the supporting surface.
[0006] Furthermore, the support portion includes a bracket and two inclined plates spaced apart on the bracket, the inclined plates are inclined downward from one end to the other end, and the upper surfaces of the two inclined plates constitute the support surface; the driving portion is fixedly mounted on the lower end of one of the inclined plates.
[0007] Furthermore, it also includes a mounting portion for mounting the ultrasonic flaw detector on the baffle, the mounting portion includes a horizontal plate fixedly mounted on the upper end of the baffle and a sliding rod slidably arranged on the horizontal plate up and down; the main unit of the ultrasonic flaw detector is arranged on the horizontal plate, and the probe of the ultrasonic flaw detector is fixedly mounted on the lower end of the sliding rod.
[0008] Furthermore, a through hole is formed on the transverse plate, and the through hole passes through the upper and lower side surfaces of the transverse plate, and the sliding rod is slidably fitted in the through hole.
[0009] Furthermore, the mounting portion also includes a force supply portion disposed on the transverse plate and used for providing a downward force to the sliding rod.
[0010] Furthermore, the force supply part includes a coil spring whose upper end is fixedly connected to the sliding rod and whose lower end is fixedly connected to the cross plate, and the coil spring is used to provide a downward pulling force to the sliding rod.
[0011] Furthermore, an external thread is formed on the upper portion of the sliding rod; the force supply part also includes a threaded sleeve and a rotating ring, the threaded sleeve is screwed on the upper portion of the sliding rod, the outer surface of the threaded sleeve is recessed inward to form an annular rotating groove, and the rotating ring is rotatably fitted in the rotating groove; the upper end of the coil spring is fixedly connected to the rotating ring.
[0012] Furthermore, the inclined plate includes an inclined plate body and an anti-skid rubber layer provided on the upper side of the inclined plate body, the upper surface of the anti-skid rubber layer is formed with anti-skid stripes, and the upper surfaces of the two anti-skid rubber layers constitute the support surface.
[0013] Furthermore, it also includes a carrier plate horizontally arranged on the bracket, and one end of the carrier plate is in contact with the upper ends of the two inclined plates.
[0014] The beneficial effects of the utility model are:
[0015] When the nondestructive testing device for girth weld of steel pipe described in the utility model is used to test the girth weld of steel pipe, the steel pipe is placed on the support surface, and the baffle blocks the steel pipe so that the steel pipe remains motionless on the support surface. Then the probe of the ultrasonic flaw detector is pressed against the outer surface of the steel pipe at the position corresponding to the girth weld, and the baffle is driven by the driving unit to move toward the lower end of the support surface along the inclined direction of the support surface. During the movement of the baffle toward the lower end of the support surface, the steel pipe can roll downward on the support surface under the action of its own gravity, and there is no need to manually move the probe in a circle around the surface of the steel pipe, so that the entire girth weld can be fully tested, which is more convenient when testing the girth weld of steel pipe.
[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of the utility model steel pipe girth weld nondestructive testing device;
[0018] Figure 2 for Figure 1 Enlarged view of a in the middle;
[0019] Figure 3 It is a right view of the nondestructive testing device for the steel pipe girth weld of the utility model.
[0020] The meanings of the numbers in the accompanying drawings are:
[0021] Baffle-1; driving part-2; supporting surface-3; bracket-4; horizontal plate-5; sliding rod-6; main unit-7; probe-8; spiral spring-9; external thread-10; threaded sleeve-11; rotating ring-12; inclined plate body-13; anti-skid rubber layer-14; anti-skid stripes-15; carrier plate-16. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.
[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0025] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0026] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.
[0027] See also Figure 1-3 The utility model provides a technical solution: a nondestructive testing device for a steel pipe girth weld, comprising a support portion, a baffle 1, an ultrasonic flaw detector and a driving portion 2, wherein the support portion is used to support the steel pipe, and a supporting surface 3 of the support portion used to support the steel pipe is an inclined surface inclined up and down, the baffle 1 is located on the side of the lower end of the steel pipe supported on the supporting surface 3 close to the supporting surface 3, the baffle 1 is used to block the steel pipe, the ultrasonic flaw detector can be an ultrasonic flaw detector with a model of JDY-TS6800, and the ultrasonic flaw detector is used to detect the girth weld of the steel pipe, the driving portion 2 is arranged on the support portion and connected to the baffle 1, the driving portion 2 is used to drive the baffle 1 to move toward the lower end of the supporting surface 3 along the inclined direction of the supporting surface 3, and the driving portion 2 is also used to drive the baffle 1 to move toward the upper end of the supporting surface 3 along the inclined direction of the supporting surface 3.
[0028] When the nondestructive testing device for the girth weld of a steel pipe described in the utility model is used to test the girth weld of a steel pipe, the steel pipe is placed on the support surface 3, and the baffle 1 blocks the steel pipe so that the steel pipe remains motionless on the support surface 3. Then the probe 8 of the ultrasonic flaw detector is pressed against the position of the outer surface of the steel pipe corresponding to the girth weld. It should be noted that the position of the outer surface of the steel pipe corresponding to the girth weld refers to the position of the outer surface of the steel pipe located on one side of the girth weld and adjacent to the girth weld. In the subsequent description, the position of the outer surface of the steel pipe corresponding to the girth weld has this meaning. The baffle 1 is driven by the driving unit 2 to move toward the lower end of the support surface 3 along the inclined direction of the support surface 3. During the movement of the baffle 1 toward the lower end of the support surface 3, the steel pipe can roll downward on the support surface 3 under the action of its own gravity. There is no need to manually move the probe 8 in a circle around the surface of the steel pipe, so that the entire girth weld can be fully tested, which is more convenient when testing the girth weld of the steel pipe. After the steel pipe circumferential weld inspection is completed, the driving unit 2 drives the baffle 1 to move toward the upper end of the supporting surface 3 along the inclined direction of the supporting surface 3, so that the baffle 1 moves upward and resets.
[0029] In this embodiment, the driving part 2 may be an electric push rod of model SY-A02B, which is arranged on the supporting part. Specifically, the electric push rod is arranged at the lower end of the supporting surface, and the output shaft of the electric push rod is connected to the baffle 1. The output shaft of the electric push rod is shortened, and the electric push rod can drive the baffle 1 to move toward the lower end of the supporting surface 3 along the inclination direction of the supporting surface 3, and the output shaft of the electric push rod is extended, and the electric push rod can drive the baffle 1 to move toward the upper end of the supporting surface 3 along the inclination direction of the supporting surface 3. With this structure, the driving part 2 can drive the baffle 1 to move toward the lower end of the supporting surface 3 along the inclination direction of the supporting surface 3, and the driving part 2 can also drive the baffle 1 to move toward the upper end of the supporting surface 3 along the inclination direction of the supporting surface 3.
[0030] In this embodiment, the supporting part includes a bracket 4 and two inclined plates, the two inclined plates are spaced apart on the bracket 4, the inclined plates are inclined downward from one end to the other end, and the upper surfaces of the two inclined plates constitute the supporting surface 3; the driving part 2 is fixedly arranged at the lower end of one of the inclined plates, and specifically, the electric push rod is fixedly arranged at the lower end of one of the inclined plates.
[0031] Since the two inclined plates are spaced apart on the bracket 4 with a spacing space between them, when the welding material of the circumferential weld of some steel pipes protrudes from the outer surface of the steel pipe, when the steel pipe is placed on the supporting surface 3, the circumferential weld is located at a position on the supporting surface 3 corresponding to the spacing space, so that the welding material protruding from the outer surface of the steel pipe will not affect the rolling of the steel pipe on the supporting surface.
[0032] In this embodiment, the nondestructive testing device for the steel pipe circumferential weld described in the utility model also includes a mounting portion, which is used to mount the ultrasonic flaw detector on the baffle 1, and the mounting portion includes a transverse plate 5 and a sliding rod 6. The transverse plate 5 is fixedly arranged at the upper end of the baffle 1, and the sliding rod 6 can be slidably arranged on the transverse plate 5 up and down. When the steel pipe is supported on the supporting surface 3 and abuts against the baffle 1, the sliding rod 6 is located directly above the steel pipe; the main unit 7 of the ultrasonic flaw detector is arranged on the transverse plate 5, and the probe 8 of the ultrasonic flaw detector is fixedly arranged at the lower end of the sliding rod 6.
[0033] Before placing the steel pipe on the support surface 3, the sliding rod 6 is slid upward on the horizontal plate 5, so that the sliding rod 6 and the probe 8 of the ultrasonic flaw detector move upward a certain distance, so that the steel pipe can enter between the probe 8 and the support surface 3. Then the steel pipe is placed on the support surface 3, so that the steel pipe abuts against the baffle 1, so that the outer surface of the steel pipe corresponding to the position of the girth weld is aligned with the probe 8 of the ultrasonic flaw detector, and then the sliding rod 6 is slid downward on the horizontal plate 5, so that the probe 8 of the ultrasonic flaw detector moves downward with the sliding rod 6, so that the probe 8 of the ultrasonic flaw detector abuts against the outer surface of the steel pipe corresponding to the girth weld. In the process of the steel pipe rolling down on the support surface 3, the probe 8 and the steel pipe can move synchronously toward the lower end of the support surface 3, which can reduce the possibility of the probe 8 of the ultrasonic flaw detector detaching from the outer surface of the steel pipe. In the process of the steel pipe rolling down on the support surface 3, it is easier for the ultrasonic flaw detector to continuously detect the girth weld of the steel pipe.
[0034] In this embodiment, a through hole is formed on the horizontal plate 5, and the through hole passes through the upper and lower sides of the horizontal plate 5, and the sliding rod 6 is slidably fitted in the through hole. With this structure, the sliding rod 6 can be arranged on the horizontal plate 5 in a manner that it can slide up and down.
[0035] In this embodiment, the mounting portion further includes a force supply portion, which is disposed on the horizontal plate and is used to provide a downward force to the sliding rod 6. The force supply portion can provide a downward force to the sliding rod 6, which can further reduce the possibility that the probe 8 of the ultrasonic flaw detector is separated from the outer surface of the steel pipe, making it easier for the ultrasonic flaw detector to continuously detect the girth weld of the steel pipe.
[0036] In this embodiment, the force supply part includes a coil spring 9, the upper end of the coil spring 9 is fixedly connected to the sliding rod 6, and the lower end of the coil spring 9 is fixedly connected to the cross plate 5. The coil spring 9 is used to provide downward pulling force to the sliding rod 6.
[0037] Since the spring can provide a downward pulling force to the sliding rod 6 , with this structure, the force supplying portion can provide a downward force to the sliding rod 6 .
[0038] In this embodiment, an external thread 10 is formed on the upper portion of the sliding rod 6; the force supply part also includes a threaded sleeve 11 and a rotating ring 12, the threaded sleeve 11 is screwed into the upper portion of the sliding rod 6, the outer surface of the threaded sleeve 11 is recessed inward to form an annular rotating groove, and the rotating ring 12 is rotatably fitted in the rotating groove; the upper end of the coil spring 9 is fixedly connected to the rotating ring 12.
[0039] After the probe 8 is pressed against the outer surface of the steel pipe at the position corresponding to the ring weld, the threaded sleeve 11 can be rotated on the upper part of the sliding rod 6 to move the threaded sleeve 11 upward or downward, so that the rotating ring 12 and the upper end of the coil spring 9 can move upward or downward, and the stretched length of the coil spring 9 can be adjusted, and the magnitude of the pulling force provided by the coil spring 9 to the sliding rod 6 can be adjusted, and then the pressing force of the probe 8 against the outer surface of the steel pipe can be adjusted. The pressing force of the probe 8 against the outer surface of the steel pipe can be adjusted to a suitable magnitude, and the steel pipe can be prevented from rolling smoothly on the supporting surface 3 due to too much pressure from the probe 8 on the steel pipe. While ensuring that the probe 8 can stably press against the outer surface of the steel pipe, the steel pipe can also roll relatively smoothly on the supporting surface 3.
[0040] In this embodiment, the inclined plate includes an inclined plate body 13 and an anti-skid rubber layer 14 arranged on the upper side of the inclined plate body 13. The upper surface of the anti-skid rubber layer 14 is formed with anti-skid stripes 15. The upper surfaces of the two anti-skid rubber layers 14 constitute the support surface 3.
[0041] When the steel pipe is supported on the support surface 3, the anti-slip rubber layer 14 and the anti-slip stripes 15 can create a large friction force between the lower side of the steel pipe and the support surface 3, so that the steel pipe is not easy to slide directly downward on the support surface 3 during the movement of the baffle 1 toward the lower end of the support surface 3.
[0042] In this embodiment, the nondestructive testing device for the steel pipe girth weld described in the utility model further includes a carrier plate 16 horizontally arranged on the bracket 4, and one end of the carrier plate 16 abuts against the upper ends of the two inclined plates.
[0043] A plurality of steel pipes can be hoisted and carried on the carrier plate 16 at one time. When the circumferential welds of the steel pipes need to be inspected, the steel pipes on the carrier plate 16 are pushed from the carrier plate 16 to the support surface 3, so that the circumferential welds of the steel pipes can be inspected, which makes it more convenient to place the steel pipes on the support surface 3.
[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A nondestructive testing device for a steel pipe girth weld, characterized in that: It includes a supporting part, a baffle, an ultrasonic flaw detector and a driving part, the supporting part is used to support the steel pipe, the supporting surface of the supporting part used to support the steel pipe is an inclined surface inclined up and down, the baffle is located on the side of the lower end of the steel pipe supported on the supporting surface close to the supporting surface, the baffle is used to block the steel pipe, the ultrasonic flaw detector is used to detect the circumferential weld of the steel pipe, the driving part is arranged on the supporting part and connected to the baffle, the driving part is used to drive the baffle to move toward the lower end of the supporting surface along the inclined direction of the supporting surface, and the driving part is also used to drive the baffle to move toward the upper end of the supporting surface along the inclined direction of the supporting surface.
2. The nondestructive testing device for steel pipe girth weld according to claim 1 is characterized in that: The support part includes a bracket and two inclined plates spaced apart on the bracket, the inclined plates are inclined downward from one end to the other end, and the upper surfaces of the two inclined plates constitute the support surface; the driving part is fixedly arranged at the lower end of one of the inclined plates.
3. The nondestructive testing device for steel pipe girth weld according to claim 1, characterized in that: It also includes a mounting portion for mounting the ultrasonic flaw detector on the baffle, the mounting portion includes a horizontal plate fixedly mounted on the upper end of the baffle and a sliding rod slidably arranged on the horizontal plate up and down; the main unit of the ultrasonic flaw detector is arranged on the horizontal plate, and the probe of the ultrasonic flaw detector is fixedly mounted on the lower end of the sliding rod.
4. The nondestructive testing device for steel pipe girth weld according to claim 3 is characterized in that: A through hole is formed on the transverse plate, and the through hole passes through the upper and lower side surfaces of the transverse plate, and the sliding rod is slidably fitted in the through hole.
5. The nondestructive testing device for steel pipe girth weld according to claim 3 is characterized in that: The mounting portion further comprises a force supply portion which is arranged on the transverse plate and is used for providing a downward force to the sliding rod.
6. The nondestructive testing device for steel pipe girth weld according to claim 5, characterized in that: The force supply part comprises a coil spring whose upper end is fixedly connected to the sliding rod and whose lower end is fixedly connected to the transverse plate, and the coil spring is used for providing a downward pulling force to the sliding rod.
7. The nondestructive testing device for steel pipe girth weld according to claim 6, characterized in that: An external thread is formed on the upper portion of the sliding rod; the force supply part also includes a threaded sleeve and a rotating ring, the threaded sleeve is screwed on the upper portion of the sliding rod, the outer surface of the threaded sleeve is recessed inward to form an annular rotating groove, and the rotating ring is rotatably fitted in the rotating groove; the upper end of the coil spring is fixedly connected to the rotating ring.
8. The nondestructive testing device for steel pipe girth weld according to claim 2, characterized in that: The inclined plate includes an inclined plate body and an anti-skid rubber layer arranged on the upper side of the inclined plate body. The upper surface of the anti-skid rubber layer is formed with anti-skid stripes, and the upper surfaces of the two anti-skid rubber layers constitute the support surface.
9. The nondestructive testing device for steel pipe girth weld according to claim 2, characterized in that: It also includes a carrier plate horizontally arranged on the bracket, one end of the carrier plate abuts against the upper ends of the two inclined plates.