Pressure pipeline steel lining stress detection equipment

Abstract

The invention discloses pressure pipeline steel lining stress detection equipment, which comprises an ultrasonic transmitting probe, an ultrasonic receiving probe, an ultrasonic stress meter, a synchronous guide rod, a first hoop and a second hoop, and is characterized in that the first hoop and the second hoop sleeve a pressure pipeline at an interval along the axial direction of the pressure pipeline; the first hoop and the second hoop are respectively and rotatably provided with a probe mounting seat, the synchronous guide rod penetrates through the probe mounting seats on the first hoop and the second hoop and is parallel to the pressure pipeline, and the ultrasonic transmitting probe is arranged on the probe mounting seat on the first hoop and extends to the outer wall of the pressure pipeline. And the ultrasonic receiving probe is arranged on a probe mounting seat on the second hoop and extends to the outer wall of the pressure pipeline. Through the mode, the stress detection equipment for the steel lining of the pressure pipeline can detect the stress change of the steel lining in the pressure pipeline, and is simple and convenient to operate and high in efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of stress detection of pressure pipeline steel linings, and in particular to a pressure pipeline steel lining stress detection device. Background Art

[0002] The steel lining of pressure pipeline refers to the installation of a layer of steel pipe or other metal material lining inside the pressure pipeline to improve the pressure resistance and corrosion resistance of the pipeline or repair the damage of the old pipeline. The steel lining can effectively extend the service life of the pressure pipeline, reduce the risk of leakage, and effectively maintain the purity of the fluid inside the pressure pipeline.

[0003] The application of steel lining in pressure pipes usually includes the following situations: 1. Corrosion protection: In pipelines that transport corrosive media (such as acid, alkali, salt solution, etc.), steel lining can prevent the media from corroding the pipeline material (the steel lining uses a layer of corrosion-resistant steel pipe); 2. Pressure enhancement: For pipelines that need to withstand higher internal pressure, steel lining can increase the overall strength and stability of the pipeline; 3. Damage repair: For pipeline walls that have been thinned due to corrosion, wear or mechanical damage, steel lining can restore the integrity and strength of the pipeline, extend its life and reduce costs; 4. Improve smoothness: Steel lining can improve the smoothness of the inner wall of the pipeline, reduce the resistance during fluid transportation, and thus improve the transportation efficiency.

[0004] There are at least the following methods for installing steel lining: 1. Close fitting method: place the steel lining close to the inner wall of the pipe and make it in close contact with the pipe wall by mechanical or hydraulic means; 2. Expansion method: Use an expansion tool to expand the steel lining inside the pipe so that it forms a tight fit with the pipe wall; 3. Welding method: Weld the steel lining to the inner wall of the pipeline, suitable for high temperature and high pressure environment; 4. Bonding method: Use special adhesive to fix the steel lining to the inner wall of the pipe.

[0005] During the installation of the steel lining, no matter what method is used, it is impossible to completely avoid the deformation of the steel lining and the generation of internal stress. If the internal stress is too large or unevenly distributed, it is easy to cause cracking and corrosion of the steel lining, shortening its service life. It is necessary to detect it to find the problem. The stress change of the steel lining can be detected by an ultrasonic stress meter, but the ultrasonic stress meter can only detect a local area of ​​the steel lining each time. The operation is cumbersome, the efficiency is low, and it is easy to miss the detection, which needs to be improved. Summary of the invention

[0006] The main technical problem solved by the present invention is to provide a pressure pipeline steel lining stress detection device to perform stress detection of the steel lining in the pressure pipeline and improve the simplicity and efficiency of operation.

[0007] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a pressure pipeline steel lining stress detection equipment, including: an ultrasonic transmitting probe, an ultrasonic receiving probe, an ultrasonic stress meter, a synchronous guide rod, a first clamp and a second clamp, the first clamp and the second clamp are sleeved on the pressure pipeline along the axial direction of the pressure pipeline at intervals, the first clamp and the second clamp are respectively rotatably provided with probe mounting seats, the synchronous guide rod passes through the probe mounting seats on the first clamp and the second clamp and is parallel to the pressure pipeline, the ultrasonic transmitting probe is arranged on the probe mounting seat on the first clamp and the second clamp and extends to the outer wall of the pressure pipeline, the ultrasonic receiving probe is arranged on the probe mounting seat on the second clamp and extends to the outer wall of the pressure pipeline, the ultrasonic transmitting probe and the ultrasonic receiving probe are respectively connected to the ultrasonic stress meter for signal transmission.

[0008] In a preferred embodiment of the present invention, the probe mounting base is provided with a through hole corresponding to the synchronization guide rod.

[0009] In a preferred embodiment of the present invention, annular grooves are provided on inner walls of the first clamp and the second clamp, a connecting block extending into the corresponding annular groove is provided on one side of the probe mounting seat, and a sliding block connected to the connecting block is provided in the annular groove.

[0010] In a preferred embodiment of the present invention, the connecting block, the sliding block and the probe mounting seat adopt an integrated structure.

[0011] In a preferred embodiment of the present invention, the slider adopts an arc-shaped strip structure.

[0012] In a preferred embodiment of the present invention, the probe mounting base adopts an L-shaped bent plate structure.

[0013] In a preferred embodiment of the present invention, the probe mounting base is provided with a guide column pointing to the pressure pipe, the ultrasonic transmitting probe and the ultrasonic receiving probe are respectively fixed on the corresponding guide columns, and the probe mounting base is provided with a guide hole corresponding to the guide column.

[0014] In a preferred embodiment of the present invention, a spring located inside the probe mounting seat is provided on the guide rod.

[0015] In a preferred embodiment of the present invention, a stop pin located outside the probe mounting seat is provided on the guide rod.

[0016] In a preferred embodiment of the present invention, it further comprises a fixing seat, the synchronous guide rod is sleeved with a sliding sleeve, the fixing seat is arranged on the sliding sleeve, the sliding sleeve is provided with a screw pointing to the synchronous guide rod, and the ultrasonic stress meter is arranged on the fixing seat.

[0017] The beneficial effects of the present invention are as follows: a pressure pipeline steel lining stress detection device pointed out by the present invention can pull the probe mounting seats on the first clamp and the second clamp to move circumferentially around the pressure pipeline through the synchronous guide rod, and maintain the elastic contact between the ultrasonic transmitting probe and the ultrasonic receiving probe and the outer wall of the pressure pipeline during the movement, thereby realizing continuous detection of the stress changes of the steel lining in the pressure pipeline, and the operation is simple, which greatly improves the detection efficiency and avoids the problem of missed detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which: Figure 1 It is a structural schematic diagram of a preferred embodiment of a pressure pipeline steel lining stress detection device of the present invention; Figure 2 yes Figure 1 A partial enlarged view of part A; Figure 3 It is a structural schematic diagram of another preferred embodiment of a pressure pipeline steel lining stress detection device of the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention are described clearly and completely below. 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.

[0020] See also Figure 1~Figure 3 , the embodiment of the present invention includes: like Figure 1 and Figure 2The pressure pipeline steel lining stress detection equipment shown is used for stress detection of the steel lining 10 in the pressure pipeline 1, and includes: an ultrasonic transmitting probe 16, an ultrasonic receiving probe 6, an ultrasonic stress meter 3, a synchronous guide rod 2, a first clamp 8, a second clamp 9 and a fixing seat 4. The first clamp 8 and the second clamp 9 are sleeved on the pressure pipeline 1 at intervals along the axial direction of the pressure pipeline 1, and the pressure pipeline 1 is clamped by bolts. The structure is stable, the assembly and disassembly are convenient, and the adaptability to the length of the pressure pipeline 1 is good. In the actual operation process, if the length of a single pressure pipeline 1 is too long, the positions of the first clamp 8 and the second clamp 9 can be changed to perform stress detection of the steel lining 10 in sections.

[0021] A probe mounting seat 12 is rotatably provided on the first clamp 8 and the second clamp 9 respectively, and the synchronization guide rod 2 passes through the probe mounting seat 12 on the first clamp 8 and the second clamp 9 and is parallel to the pressure pipe 1, so that the probe mounting seat 12 on the first clamp 8 and the second clamp 9 can be synchronously rotated and adjusted along the circumference of the pressure pipe 1.

[0022] In this embodiment, a through hole corresponding to the synchronization guide rod 2 is provided on the probe mounting seat 12, so that the probe mounting seat 12 can be laterally adjusted according to the positions of the first clamp 8 and the second clamp 9, further improving the adaptability to the length of the pressure pipe 1.

[0023] The ultrasonic transmitting probe 16 is arranged on the probe mounting seat on the first clamp 8 and extends to the outer wall of the pressure pipe 1. The ultrasonic receiving probe 6 is arranged on the probe mounting seat on the second clamp 9 and extends to the outer wall of the pressure pipe 1. In this embodiment, the ultrasonic transmitting probe 16 and the ultrasonic receiving probe 6 are respectively connected to the ultrasonic stress meter 3 through a signal line to send signals, and perform stress detection on a rectangular area on the steel lining 10 between the ultrasonic transmitting probe 16 and the ultrasonic receiving probe 6. During the circumferential rotation of the ultrasonic transmitting probe 16 and the ultrasonic receiving probe 6 along the pressure pipe 1 with the probe mounting seat, stress detection of multiple adjacent rectangular areas is continuously performed, thereby completing the stress detection of the entire steel lining 10.

[0024] After the ultrasonic stress meter 3 sends an excitation signal to the ultrasonic transmitting probe 16, the ultrasonic transmitting probe 16 excites the ultrasonic wave and propagates along the length direction of the steel lining 10. When the ultrasonic wave encounters an area with stress accumulation, the speed or phase of the ultrasonic wave propagation changes. The ultrasonic receiving probe 6 collects the signal and transmits it back to the ultrasonic stress meter 3. The ultrasonic stress meter 3 analyzes and captures the speed or phase change, and combines it with the previously calibrated material characteristic parameters of the steel lining 10 to calculate the stress in the target area.

[0025] In this embodiment, the steel lining 10 is not in direct contact with the ultrasonic transmitting probe 16 and the ultrasonic receiving probe 6. Therefore, what is measured is the common stress of the pressure pipeline 1 and the steel lining 10. The quality of the steel lining after assembly is reflected by the stress change. If the stress change is not large, it is qualified.

[0026] like Figure 1 As shown, the synchronous guide rod 2 is sleeved with a sliding sleeve 5, and the fixing seat 4 is arranged on the sliding sleeve 5, which can be fixed by bolts, and the assembly is convenient. The sliding sleeve 5 is provided with a screw 7 pointing to the synchronous guide rod 2, and the sliding sleeve 5 is fixed on the synchronous guide rod 2 to avoid random lateral movement. The ultrasonic stress meter 3 is arranged on the fixing seat 4, and the ultrasonic stress meter 3 can be fixed on the fixing seat 4 by bolts, and the structure is stable to avoid the disorder of the signal line.

[0027] like Figure 2 As shown, the inner walls of the first clamp 8 and the second clamp 9 are provided with an annular groove 11, a connecting block 17 extending into the corresponding annular groove 11 is provided on one side of the probe mounting seat 12, a slider 18 connected to the connecting block 17 is provided in the annular groove 11, and an opening communicating with the annular groove 11 and corresponding to the connecting block 17 is provided on one side of the first clamp 8 and the second clamp 9, which does not affect the rotation of the connecting block 17 along the circumferential direction of the pressure pipe 1 along the slider 18.

[0028] In this embodiment, the slider 18 adopts an arc-shaped strip structure, and has high stability during the sliding process in the annular groove 11. The connecting block, the slider 18 and the probe mounting seat 12 adopt an integrated structure, which can be processed with steel material and has high strength.

[0029] like Figure 1 As shown, the probe mounting seat 12 adopts an L-shaped bent plate structure. A guide column 13 pointing to the pressure pipe 1 is arranged on the probe mounting seat 12, and a guide hole corresponding to the guide column 13 is arranged on the probe mounting seat 12, so that the guide column 13 can be axially telescopically adjusted.

[0030] The ultrasonic transmitting probe 16 and the ultrasonic receiving probe 6 are respectively fixed on the corresponding guide pillars 13 and adjusted along with the guide pillars 13. The guide rod 13 is provided with a stopper pin 14 located outside the probe mounting seat 12 to prevent the guide rod 13 from moving outward and flying off.

[0031] In this embodiment, a spring 15 located on the inner side of the probe mounting seat 12 is provided on the guide rod 13 to elastically press the ultrasonic transmitting probe 16 and the ultrasonic receiving probe 6 so that the ultrasonic transmitting probe 16 and the ultrasonic receiving probe 6 maintain elastic contact with the surface of the pressure pipe 1, thereby ensuring the reliability of the detection process.

[0032] like Figure 3 As shown, in this embodiment, a fixing base is not used, and the ultrasonic stress meter can be held handheld, which is low in cost. However, attention should be paid to the winding problem of the signal line during operation.

[0033] In summary, the pressure pipeline steel lining stress detection device pointed out by the present invention can perform pressure pipeline steel lining stress detection, is easy to operate, and improves the detection efficiency.

[0034] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pressure pipeline steel lining stress detection device, used for pressure pipeline steel lining stress detection, characterized in that: include: An ultrasonic transmitting probe, an ultrasonic receiving probe, an ultrasonic stress meter, a synchronous guide rod, a first clamp and a second clamp, wherein the first clamp and the second clamp are sleeved on the pressure pipe at intervals along the axial direction of the pressure pipe, and the first clamp and the second clamp are respectively rotatably provided with probe mounting seats, the synchronous guide rod passes through the probe mounting seats on the first clamp and the second clamp and is parallel to the pressure pipe, the ultrasonic transmitting probe is arranged on the probe mounting seat on the first clamp and the second clamp, and extends to the outer wall of the pressure pipe, the ultrasonic receiving probe is arranged on the probe mounting seat on the second clamp and extends to the outer wall of the pressure pipe, and the ultrasonic transmitting probe and the ultrasonic receiving probe are respectively connected to the ultrasonic stress meter for signal transmission.

2. The pressure pipeline steel lining stress detection equipment according to claim 1 is characterized in that: The probe mounting seat is provided with a through hole corresponding to the synchronous guide rod.

3. The pressure pipeline steel lining stress detection device according to claim 1 is characterized in that: The inner walls of the first clamp and the second clamp are provided with annular grooves, one side of the probe mounting seat is provided with a connecting block extending into the corresponding annular groove, and a sliding block connected to the connecting block is provided in the annular groove.

4. The pressure pipeline steel lining stress detection device according to claim 3 is characterized in that: The connecting block, the sliding block and the probe mounting seat adopt an integrated structure.

5. The pressure pipeline steel lining stress detection equipment according to claim 3 is characterized in that: The sliding block adopts an arc-shaped strip structure.

6. The pressure pipeline steel lining stress detection device according to claim 1 is characterized in that: The probe mounting seat adopts an L-shaped bent plate structure.

7. The pressure pipeline steel lining stress detection device according to claim 1 is characterized in that: The probe mounting seat is provided with a guide column pointing to the pressure pipe, the ultrasonic transmitting probe and the ultrasonic receiving probe are respectively fixed on the corresponding guide columns, and the probe mounting seat is provided with a guide hole corresponding to the guide column.

8. The pressure pipeline steel lining stress detection device according to claim 7 is characterized in that: The guide rod is provided with a spring located inside the probe mounting seat.

9. The pressure pipeline steel lining stress detection device according to claim 7 is characterized in that: The guide rod is provided with a stop pin located outside the probe mounting seat.

10. The pressure pipeline steel lining stress detection device according to claim 1, characterized in that: It also includes a fixing seat, the synchronous guide rod is sleeved with a sliding sleeve, the fixing seat is arranged on the sliding sleeve, the sliding sleeve is provided with a screw pointing to the synchronous guide rod, and the ultrasonic stress meter is arranged on the fixing seat.

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