A system for detecting curing uniformity of ultraviolet light cured restorations

Abstract

The application discloses a kind of ultraviolet light curing repair's curing uniformity detection system.The system includes: distributed optical fiber temperature measurement module and control module;Wherein, the distributed optical fiber temperature measurement module includes optical fiber sensor pre-embedded in the lining hose of the pipeline to be repaired along the length direction, for real-time acquisition temperature distribution data on the lining hose;The control module is used to obtain the temperature data of current curing area based on the temperature distribution data in real time, and determines the curing uniformity according to the temperature data.The technical scheme provided by the application realizes continuous temperature monitoring along the length direction of the pipeline by pre-embedding the optical fiber sensor, so as to provide more accurate temperature data to real-time feedback the temperature change in the repair process, and further improve the accuracy of uniformity determination in the pipeline repair process, so as to adjust the curing process in time.

Description

Technical Field

[0001] This invention relates to the field of trenchless pipeline repair technology, and in particular to a curing uniformity detection system for ultraviolet light curing repair. Background Technology

[0002] Ultraviolet curing pipe repair (UV-CIPP) technology has become the mainstream technology for trenchless pipe repair due to its advantages of high efficiency, environmental protection and short construction cycle. Its core is to use ultraviolet light to cause the resin lining of the inner wall of the pipe to undergo a curing reaction, forming a high-strength and sealed repair layer, so as to repair pipe damage and leakage.

[0003] In traditional UV-CIPP pipe repair, the uniformity of temperature distribution is crucial for the curing effect. However, existing technologies typically rely on temperature sensors placed at a single fixed location, lacking accurate and comprehensive temperature monitoring, which leads to inaccurate assessment of uniformity during the repair process. Summary of the Invention

[0004] This invention provides a curing uniformity detection system for ultraviolet light curing repair, so as to improve the accuracy of uniformity determination during pipeline repair.

[0005] This invention provides a curing uniformity detection system for ultraviolet light curing repair, the system comprising: a distributed fiber optic temperature measurement module and a control module; wherein, The distributed optical fiber temperature measurement module includes an optical fiber sensor embedded along the length of the pipe to be repaired in the inner lining hose, for real-time acquisition of temperature distribution data on the inner lining hose. The control module is used to acquire the temperature data of the current curing area in real time based on the temperature distribution data, and to determine the curing uniformity based on the temperature data.

[0006] Optionally, the distributed fiber optic temperature measurement module includes multiple fiber optic sensors.

[0007] Optionally, multiple optical fiber sensors are arranged at equal intervals around the circumference of the inner lining hose.

[0008] Optionally, the fiber optic sensor is fixed to the inner lining hose by a fiber optic groove or embossed structure.

[0009] Optionally, the fiber optic sensor can be fixed in place using hot melt adhesive tape or special adhesive.

[0010] Optionally, the outer surface of the fiber optic sensor is covered with a protective film.

[0011] Optionally, the control module is specifically used for: Calculate the temperature change amplitude of the current cured area along the length of the pipe to be repaired. If it exceeds a preset amplitude threshold, the current cured area is determined to be unevenly cured.

[0012] Optionally, the control module is further configured to: The temperature change of the current cured area in the circumference of the pipe to be repaired is calculated. If it exceeds a preset threshold, the current cured area is determined to be unevenly cured.

[0013] Optionally, the control module is further configured to: If uneven curing occurs, adjust the curing speed and / or light source power of the UV curing repair.

[0014] Optionally, the control module is further specifically used for: If the temperature data reaches the preset temperature threshold, the curing speed is accelerated and the light source power is reduced; If the temperature data is lower than the preset temperature threshold, the curing speed is slowed down and the light source power is increased.

[0015] This invention provides a curing uniformity detection system for ultraviolet (UV) curing repair, comprising a distributed fiber optic temperature measurement module and a control module. The distributed fiber optic temperature measurement module includes a fiber optic sensor embedded along the length of the inner lining of the pipe to be repaired. This module can collect temperature distribution data on the inner lining in real time. The control module can then obtain the temperature data of the current curing area based on the temperature distribution data and determine the curing uniformity accordingly. The UV curing uniformity detection system provided by this invention, through the embedded fiber optic sensor, achieves continuous temperature monitoring along the length of the pipe, thereby providing more accurate temperature data to provide real-time feedback on temperature changes during the repair process. This improves the accuracy of uniformity determination during pipe repair, allowing for timely adjustments to the curing process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the curing uniformity detection system for UV-cured repair provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the fiber optic sensor deployment location provided in an embodiment of the present invention. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0018] Figure 1 This is a schematic diagram of the curing uniformity detection system for UV-cured repair provided in an embodiment of the present invention. This embodiment is applicable to trenchless UV-cured repair of pipelines. Figure 1 As shown, the system includes a distributed optical fiber temperature measurement module 100 and a control module 200; wherein, the distributed optical fiber temperature measurement module 100 includes an optical fiber sensor pre-embedded in the inner lining hose of the pipe to be repaired along the length direction, for real-time acquisition of temperature distribution data on the inner lining hose; the control module 200 is used to acquire the temperature data of the current curing area in real time based on the temperature distribution data, and determine the curing uniformity based on the temperature data.

[0019] Specifically, the distributed fiber optic temperature sensing module 100 can employ Distributed Temperature Sensing (DTS) technology to achieve continuous distributed temperature monitoring via fiber optic sensors. The collected temperature distribution data can be fed back to the control module 200 for processing in real time. Specifically, fiber optic sensors can be pre-embedded along the length of the flexible lining of the pipeline to be repaired. The length of the fiber optic sensor can be longer than the length of the flexible lining to cover the entire lining area, ensuring continuous monitoring by the fiber optic sensor throughout the pipeline repair process.

[0020] As the curing carriage moves within the pipe to be repaired, the control module 200 can determine the current curing area in real time via the position sensor on the curing carriage, i.e., the area being irradiated by the ultraviolet light source on the curing carriage. Then, it can obtain the temperature data corresponding to the coordinates of the current curing area from the temperature distribution data collected at corresponding times, to determine the curing uniformity of the current curing area in real time. Specifically, the determination can be made based on the fluctuation of this temperature data; if there is a large fluctuation, the curing uniformity is poor.

[0021] In an optional embodiment, the distributed fiber optic temperature measurement module includes multiple fiber optic sensors to monitor the temperature at different locations along the circumference of the inner lining hose, providing more comprehensive temperature monitoring data. Further optionally, the multiple fiber optic sensors are arranged at equal intervals along the circumference of the inner lining hose to achieve better monitoring of the pipe's overall temperature and determination of curing uniformity. For example, as... Figure 2 As shown, three fiber optic sensors 3 are arranged at equal intervals around the inner lining hose 1, and can correspond to the irradiation direction of the ultraviolet light source on the curing carriage 2.

[0022] In one optional embodiment, the fiber optic sensor is fixed to the inner lining tubing via fiber optic grooves or an embossed structure to ensure stability and prevent displacement during the repair process. Further optionally, the fiber optic sensor is fixed in place using hot melt tape or a special adhesive to prevent displacement during resin impregnation or curing, ensuring the effectiveness of temperature monitoring. Further optionally, the outer surface of the fiber optic sensor is covered with a protective film to prevent interference from resin, chemicals, or other external environmental factors, ensuring long-term stable operation of the fiber optic sensor.

[0023] In an optional implementation, the control module 200 is specifically used to: calculate the temperature change amplitude of the current curing area along the length of the pipe to be repaired; if it exceeds a preset amplitude threshold, then the current curing area is determined to be unevenly cured. Specifically, for each fiber optic sensor (single or multiple), the temperature difference at different locations along the length of the corresponding temperature data of the current curing area can be calculated. For example, the difference between the maximum and minimum temperatures can be calculated to determine the temperature change amplitude along the length, which is then compared with the preset amplitude threshold to determine the curing uniformity. For example, if the temperatures at three points along the length are 90, 80, and 90, and the calculated temperature change amplitude is 10, exceeding the preset amplitude threshold of 5, then the current curing area is determined to be unevenly cured, possibly due to water accumulation in the middle.

[0024] Optionally, the control module 200 is further configured to: calculate the temperature change amplitude of the current cured area in the circumferential direction of the pipe to be repaired; if it exceeds a preset amplitude threshold, then determine that the current cured area is unevenly cured. Specifically, it can also calculate the temperature difference at the same position along the length of multiple fiber optic sensors, i.e., the temperature difference at various points in the circumferential direction of the cross-section of the pipe to be repaired. For example, it can calculate the difference between the maximum and minimum temperatures to determine the circumferential temperature change amplitude, and then compare it with the preset amplitude threshold to determine the curing uniformity. For example, if the temperatures at three points in the circumferential direction are 90, 80, and 90, and the calculated temperature change amplitude is 10, which exceeds the preset amplitude threshold of 5, it is determined that the current cured area is unevenly cured, possibly due to water accumulation at the bottom.

[0025] Based on the above technical solution, optionally, the control module 200 is further configured to: adjust the curing speed and / or light source power of the ultraviolet curing repair if uneven curing occurs. Specifically, reducing the curing speed allows for longer irradiation of the current curing area, while increasing the light source power directly increases the radiant energy to the current curing area; both can raise the temperature of the current curing area, and vice versa. This allows for automatic adjustment of the location of uneven curing according to actual needs. Specifically, a PID algorithm can be used for feedback adjustment to achieve local curing compensation, ensuring uniform temperature distribution in each area during the curing process, thereby improving the uniformity of the entire curing process, ensuring the stability and reliability of the repair quality, and reducing manual intervention and improving construction efficiency through automated adjustment.

[0026] Optionally, the control module is further configured to: if the temperature data reaches a preset temperature threshold, accelerate the curing speed and reduce the light source power; if the temperature data is below the preset temperature threshold, slow down the curing speed and increase the light source power. Specifically, a preset temperature threshold can be pre-set based on the material and process temperature of the inner lining hose. Through automatic closed-loop adjustment of the curing speed and light source power, the curing temperature can be maintained within a certain required range, thereby ensuring the curing effect.

[0027] Based on the aforementioned technical solutions, this system can also display temperature change curves and curing status in real time during the repair process through a data recording and monitoring platform, ensuring the traceability of the repair process. Furthermore, operators can remotely operate the platform to view the temperature distribution during the repair process at any time and adjust system parameters based on the data results, ensuring the efficiency and uniformity of the curing process while enhancing the system's reliability and maintainability.

[0028] The UV-curing repair uniformity detection system provided in this invention includes a distributed fiber optic temperature measurement module and a control module. The distributed fiber optic temperature measurement module includes a fiber optic sensor embedded along the length of the pipe to be repaired within the inner lining hose. This module can collect temperature distribution data on the inner lining hose in real time. The control module can then obtain the temperature data of the current curing area based on this temperature distribution data and determine the curing uniformity accordingly. By embedding the fiber optic sensor, continuous temperature monitoring along the length of the pipe is achieved, providing more accurate temperature data to provide real-time feedback on temperature changes during the repair process. This improves the accuracy of uniformity determination during pipe repair, allowing for timely adjustments to the curing process.

[0029] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A system for detecting the curing uniformity of UV-cured repair, characterized in that, The system includes: a distributed fiber optic temperature measurement module and a control module; wherein... The distributed optical fiber temperature measurement module includes an optical fiber sensor embedded along the length of the pipe to be repaired in the inner lining hose, for real-time acquisition of temperature distribution data on the inner lining hose. The control module is used to acquire the temperature data of the current curing area in real time based on the temperature distribution data, and to determine the curing uniformity based on the temperature data.

2. The curing uniformity detection system for UV-cured repair according to claim 1, characterized in that, The distributed optical fiber temperature measurement module includes multiple optical fiber sensors.

3. The curing uniformity detection system for UV-cured repair according to claim 2, characterized in that, Multiple optical fiber sensors are arranged at equal intervals around the circumference of the inner lining hose.

4. The curing uniformity detection system for UV-cured repair according to claim 1, characterized in that, The fiber optic sensor is fixed to the inner lining hose via fiber optic grooves or embossed structures.

5. The curing uniformity detection system for UV-cured repair according to claim 4, characterized in that, The fiber optic sensor is fixed in place using hot melt adhesive tape or special adhesive.

6. The curing uniformity detection system for UV-cured repair according to claim 1, characterized in that, The outer surface of the fiber optic sensor is covered with a protective film.

7. The curing uniformity detection system for UV-cured repair according to claim 2, characterized in that, The control module is specifically used for: Calculate the temperature change amplitude of the current cured area along the length of the pipe to be repaired. If it exceeds a preset amplitude threshold, the current cured area is determined to be unevenly cured.

8. The curing uniformity detection system for UV-cured repair according to claim 7, characterized in that, The control module is also specifically used for: The temperature change of the current cured area in the circumference of the pipe to be repaired is calculated. If it exceeds a preset threshold, the current cured area is determined to be unevenly cured.

9. The curing uniformity detection system for UV-cured repair according to claim 8, characterized in that, The control module is also used for: If uneven curing occurs, adjust the curing speed and / or light source power of the UV curing repair.

10. The curing uniformity detection system for UV-cured repair according to claim 9, characterized in that, The control module is also specifically used for: If the temperature data reaches the preset temperature threshold, the curing speed is accelerated and the light source power is reduced; If the temperature data is lower than the preset temperature threshold, the curing speed is slowed down and the light source power is increased.

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