Pipeline detection device and detection method

Abstract

The invention relates to the technical field of pipeline detection, and discloses a pipeline detection device and method.The device comprises a pipeline clamping and fixing support, a vibration exciter, a shielding box, a radiation noise tester and a control box, the pipeline clamping and fixing support comprises two sets of sector plates, telescopic rods and a connecting plate, and the sector plates are arranged in parallel in the axial direction of a pipeline and oppositely arranged in pairs; the shielding box is fixed between the upper fan-shaped plate and the lower fan-shaped plate on one side, and the radiation noise tester is fixed between the upper fan-shaped plate and the lower fan-shaped plate on the other side. The device is compact and simple in structure, the fluid state of the pipeline can be rapidly detected, the situation that a flange needs to be disassembled to check the pipeline is avoided, operation is easy and convenient, the troubleshooting cost is reduced, and the troubleshooting time is shortened. And for ship system debugging, the adopted detection method not only saves the cost, but also shortens the debugging period.

Description

Technical Field

[0001] This invention relates to the field of pipeline testing, and in particular to a pipeline testing device and testing method. Background Technology

[0002] Newly built ships may face pipeline blockage issues during the commissioning phase. Commissioning personnel often assume the pipelines are unobstructed and are unaware of actual blockages. If a blockage occurs, it may be necessary to disassemble flanges one by one for troubleshooting. Since different types of pipelines vary in length, some pipelines may be hundreds of meters long and pass through multiple compartments or sections, which poses a significant challenge to the method of disassembling flanges for troubleshooting. In addition, if the pipeline is filled with oil or water, the liquid may leak out when the flange is disassembled, potentially polluting the ship's environment. In short, this method of troubleshooting pipeline blockages not only increases the labor costs of commissioning but also delays the commissioning cycle.

[0003] Patent application CN116626162A discloses a device and method for detecting the concentration and blockage of feed pipeline materials, relating to the field of pipeline material detection technology. The device includes a vibrator disposed on one side of the outer wall of the pipeline to be tested, with the vibrating head of the vibrator abutting against and vibrating against the outer wall of the pipeline to generate sound waves within the pipeline; a sound wave converter disposed on the opposite side of the outer wall of the pipeline to be tested, opposite to the vibrator, with the receiving end of the sound wave converter having a gap or contact with the outer wall of the pipeline to receive and generate sound wave feedback signals; a main control system and a host computer; both the vibrator and the sound wave converter are electrically connected to the main control system and are controlled by the main control system; the main control system has a built-in wireless communication module and is wirelessly connected to the host computer; and a power supply mechanism electrically connected to the main control system.

[0004] The existing detection devices have complex structures, making it difficult to quickly detect the fluid status in pipelines, resulting in high troubleshooting costs and long troubleshooting times.

[0005] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a pipeline testing device and method that can quickly determine the fluid state in the pipeline, avoiding the need to disassemble flanges section by section for troubleshooting when the location of pipeline blockage is unknown during the commissioning phase of various ship systems, thereby shortening the commissioning cycle. While saving manpower and material costs, it also effectively avoids pollution to the ship's environment caused by fluid (oil or water) leakage during flange disassembly.

[0007] The technical solution adopted in this invention is: A pipeline testing device includes a pipeline clamping and fixing bracket, a vibrator, a shielding box, a radiated noise tester, and a control box. The pipeline clamping and fixing bracket includes a sector plate, a telescopic rod, and a connecting plate. Two sets of sector plates are arranged parallel to each other along the pipeline axis. The shielding box is fixed between the upper and lower sector plates on one side, and the radiated noise tester is fixed between the upper and lower sector plates on the other side.

[0008] By adopting the above structure, the device can quickly detect the fluid status of the pipeline, avoiding the need to remove flanges to inspect the pipeline. It is easy to operate, reduces troubleshooting costs, and shortens troubleshooting time.

[0009] Preferably, bolt holes are provided at the far ends of the two sets of sector plates, and the shielding box is fixed between the two sector plates by bolts and bolt holes. The radiated noise tester is fixedly connected to the sector plates by bolts and bolt holes.

[0010] By adopting the above structure, the device can fit well with the pipeline surface, improving the stability of the device fixation.

[0011] Preferably, each of the two sets of sector plates has a connecting plate at its opposite ends, and a telescopic rod is provided between the opposite sector plates, with the telescopic rod installed in the opening of the connecting plate.

[0012] Preferably, the telescopic rod consists of two parts, which are connected by a thread, and the length of the telescopic rod can be adjusted by rotating the thread.

[0013] By adopting the above structure, the opening degree of the measuring device can be adjusted, enabling measurements to be taken on pipes of different diameters.

[0014] Preferably, the vibrator is axially perpendicular to the surface of the pipeline and is positioned at the center of the shielding box. The shielding box is fan-shaped, with fan-shaped micro-perforated plates arranged radially at equal intervals inside the shielding box, and sound-absorbing cotton is uniformly radiated outside the shielding box.

[0015] By adopting the above structure, the radiated noise generated outside the pipeline at the excitation source when the vibrator applies excitation force to the pipeline can be shielded by the shielding box. The micro-perforated plate and sound-absorbing cotton can both absorb the radiated noise at the excitation source and prevent interference with the test results of the radiated noise tester.

[0016] Preferably, the radiated noise tester is square, with one side attached to the pipe wall and a control box fixed on the other side. The control box includes a data processor, buttons, and a display screen.

[0017] By adopting the above structure, the radiated noise tester can accurately measure the radiated noise of the fluid medium in the pipeline.

[0018] Preferably, a detection method for a pipeline detection device includes the following steps: Step 1: In an anechoic chamber, use an acoustic camera or vibration noise tester to measure the radiated noise intensity of carbon steel pipes or stainless steel pipes of different diameters when different fluids are injected into them under a fixed excitation force. The fluids are air, fuel oil, lubricating oil or water. Store the measurement results in the data processor of the control box. Step 2: Adjust the length of the telescopic rod so that the clamping and fixing bracket of the pipeline can be stably fixed on the surface of the pipeline being tested; Step 3: Use the fluid medium selection button on the control box to select the type of fluid medium in the pipeline to be tested, and switch the data processor to the corresponding fluid detection range; Step 4: Operate the vibrator switch button on the control box. The vibrator applies excitation force to the pipeline, and the radiated noise tester starts to synchronously detect the radiated noise intensity. When the output signal of the radiated noise tester is consistent with the detection range of the data processor, the display screen on the control box shows "qualified," indicating that the fluid medium selected before the test is the medium being measured. When the output signal of the radiated noise tester is inconsistent with the detection range of the data processor, the display screen on the control box shows an alarm status, indicating that the fluid medium selected before the test is not the medium being measured.

[0019] By adopting the above method, centralized operation and control can be achieved, measurement results can be visualized, and operation can be simplified.

[0020] Compared with the prior art, the present invention has the following advantages: 1. The device of the present invention has a compact and simple structure, which can quickly detect the fluid status of pipelines, avoid the need to remove flanges to inspect pipelines, and is easy to operate, reducing troubleshooting costs and time.

[0021] 2. The radiation noise tester set in the device of the present invention can accurately measure the radiation noise of the fluid medium in the pipeline.

[0022] 3. The device of the present invention adopts a fan-shaped plate fixing structure, which can fit well with the surface of the pipeline and improve the stability of the device fixing.

[0023] 4. The detection method used in this invention can achieve centralized operation and control, visualize the measurement results, and is easy to operate. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the device of the present invention; Figure 2 This is a top view of the device of the present invention; Figure 3 This is a front view of the device of the present invention; Figure 4 This is a top view of the device of the present invention.

[0025] The components include: 1. Pipeline; 2. Shielding box; 3. Vibrator; 4. Connecting plate; 5. Bolt hole; 6. Radiated noise tester; 7. Control box; 8. Sector plate; 9. Telescopic rod. Detailed Implementation

[0026] like Figure 1-4 As shown, a pipeline inspection device includes a clamping and fixing bracket for the pipeline 1, a vibrator 3, a shielding box 2, a radiated noise tester 6, and a control box 7. The clamping and fixing bracket for the pipeline 1 includes sector plates 8, telescopic rods 9, and connecting plates 4. Two sets of sector plates 8 are arranged parallel to each other along the axial direction of the pipeline 1. The shielding box 2 is fixed between the upper and lower sector plates 8 on one side, and the radiated noise tester 6 is fixed between the upper and lower sector plates 8 on the other side. This device can quickly detect the fluid state of the pipeline, avoiding the need to disassemble flanges for pipeline inspection. It is easy to operate, reduces inspection costs, and shortens inspection time.

[0027] Both sets of sector plates 8 have bolt holes 5 at their far ends. The shielding box 2 is fixed between the two sector plates 8 by bolts and bolt holes 5. The radiated noise tester 6 is fixedly connected to the sector plates 8 by bolts and bolt holes 5. Each set of sector plates 8 has a connecting plate 4 at its opposite ends. A telescopic rod 9 connects the opposing sector plates 8, and the telescopic rod 9 is installed in the opening of the connecting plate 4. The telescopic rod 9 consists of two parts connected by a thread, and its length can be adjusted by rotating the thread. The angle of the sector plates 8 can be between 30-60°. The sector plates 8 are arranged in two parallel groups along the pipeline axis. The upper and lower pieces of each group of sector plates 8 are also arranged parallel to each other, with a spacing of approximately 5-8 times the thickness of the sector plate 8. The bolt holes 5 of the four sector plates 8 are arranged on the same plane. The device can fit well with the pipeline surface, improving the stability of the device.

[0028] The vibrator 3 is axially perpendicular to the surface of the pipe 1 and is positioned at the center of the shielding box 2. The shielding box 2 is fan-shaped, with fan-shaped micro-perforated plates arranged radially at equal intervals inside. The outside of the shielding box 2 is uniformly covered with radiating sound-absorbing cotton. The radiated noise tester 6 is square, with one side attached to the pipe wall and the other side fixed to a control box 7. The control box 7 includes a data processor, buttons, and a display screen. The data processor stores the radiated noise intensity measured during the factory production stage of the measuring device when carbon steel or stainless steel pipes of different diameters are injected with different fluids (air, fuel oil, lubricating oil, water) under a fixed excitation force. The buttons include a vibrator on / off control button, a radiated noise tester start / stop button, and a fluid medium type selection button. The display screen shows the measurement results. When the device is in use, the radiated noise generated outside the pipe at the excitation source when the vibrator 3 applies excitation force to the pipe can be shielded by the shielding box 2. The micro-perforated plates and sound-absorbing cotton can absorb the radiated noise at the excitation source, preventing interference with the test results of the radiated noise tester. The radiated noise tester 6 can accurately measure the radiated noise of the fluid medium in the pipe. It can achieve centralized control of the vibrator 3 and the radiated noise tester 6, as well as the processing and display of test data.

[0029] A method for testing a pipeline testing device includes the following steps: Step 1: In an anechoic chamber, use an acoustic camera or vibration noise tester to measure the radiated noise intensity of carbon steel pipes or stainless steel pipes of different diameters when different fluids are injected into them under a fixed excitation force. The fluids are air, fuel oil, lubricating oil or water. Store the measurement results in the data processor of control box 7. Step 2: Adjust the length of the telescopic rod 9 so that the clamping and fixing bracket of the pipeline 1 can be stably fixed on the surface of the pipeline being tested; Step 3: Use the fluid medium selection button on the control box 7 to select the type of fluid medium in the pipeline to be tested, and switch the data processor to the corresponding fluid detection range; Step 4: Operate the switch button of the vibrator 3 on the control box 7. The vibrator 3 provides excitation force to the pipeline 1, and the radiated noise tester 6 starts to synchronously detect the radiated noise intensity. When the output signal of the radiated noise tester 6 is consistent with the detection range of the data processor, the display screen on the control box 7 shows "qualified", indicating that the fluid medium selected before the test is the medium to be measured. When the output signal of the radiated noise tester 6 is inconsistent with the detection range of the data processor, the display screen on the control box 7 shows "alarm status", indicating that the fluid medium selected before the test is not the medium to be measured.

[0030] This invention enables rapid detection of fluid conditions in pipelines, eliminating the need to disassemble flanges for inspection. It simplifies operation, reduces troubleshooting costs and time, and prevents fluid spillage during flange disassembly, thus avoiding pollution of the ship's environment. The radiated noise meter provides accurate measurement of radiated noise from the fluid medium in the pipeline. This device allows for centralized operation and control, visualized measurement results, and ease of use. It is not limited to detecting vertically arranged pipelines as shown in the attached diagram; it is also applicable to horizontally arranged pipelines. Furthermore, this device is not limited to pipeline inspection on ships; it is suitable for pipeline inspection in other fields as well.

[0031] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should be included within the scope of protection defined by the claims of the present invention.

Claims

1. A pipeline testing device, comprising a pipeline clamping and fixing bracket, a vibrator, a shielding box, a radiated noise tester, and a control box, characterized in that: The clamping and fixing bracket of the pipeline includes a sector plate, a telescopic rod and a connecting plate. There are two sets of sector plates, which are arranged in pairs opposite each other along the pipeline axis. The shielding box is fixed between the upper and lower sector plates on one side, and the radiation noise tester is fixed between the upper and lower sector plates on the other side.

2. The pipeline testing device according to claim 1, characterized in that: Bolt holes are provided at the far ends of the two sets of sector plates. The shielding box is fixed between the two sector plates by bolts and bolt holes. The radiated noise tester is fixedly connected to the sector plates by bolts and bolt holes.

3. The pipeline testing device according to claim 1, characterized in that: The two sets of sector plates are provided with connecting plates at their opposite ends, and telescopic rods are provided between the opposite sector plates. The telescopic rods are installed in the openings of the connecting plates.

4. The pipeline testing device according to claim 3, characterized in that: The telescopic rod consists of two parts connected by a thread, and the length of the telescopic rod can be adjusted by rotating the thread.

5. A pipeline testing device according to claim 1, characterized in that: The vibrator is axially perpendicular to the surface of the pipeline and is arranged at the center of the shielding box. The shielding box is fan-shaped, and fan-shaped micro-perforated plates are arranged radially at equal intervals inside the shielding box. The outside of the shielding box is uniformly radiated with sound-absorbing cotton.

6. The pipeline testing device according to claim 1, characterized in that: The radiated noise tester is square, with one side attached to the pipe wall and a control box fixed to the other side. The control box includes a data processor, buttons, and a display screen.

7. A testing method for a pipeline testing device, characterized in that: Includes the following steps: Step 1: In an anechoic chamber, use an acoustic camera or vibration noise tester to measure the radiated noise intensity of carbon steel pipes or stainless steel pipes of different diameters when different fluids are injected into them under a fixed excitation force. The fluids are air, fuel oil, lubricating oil or water. Store the measurement results in the data processor of the control box. Step 2: Adjust the length of the telescopic rod so that the clamping and fixing bracket of the pipeline can be stably fixed on the surface of the pipeline being tested; Step 3: Use the fluid medium selection button on the control box to select the type of fluid medium in the pipeline to be tested, and switch the data processor to the corresponding fluid detection range; Step 4: Operate the vibrator switch button on the control box. The vibrator applies excitation force to the pipeline, and the radiated noise tester starts to synchronously detect the radiated noise intensity. When the output signal of the radiated noise tester is consistent with the detection range of the data processor, the display screen on the control box shows "qualified," indicating that the fluid medium selected before the test is the medium being measured. When the output signal of the radiated noise tester is inconsistent with the detection range of the data processor, the display screen on the control box shows an alarm status, indicating that the fluid medium selected before the test is not the medium being measured.

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