A dam body temperature monitoring system

Abstract

The present invention discloses a dam body temperature monitoring system, which belongs to the field of dam monitoring technology. The system includes monitoring equipment and a protective tube, wherein the protective tube is arranged inside the dam body along the length direction of the dam body, and the dam body is cast in layers, and each layer of the cast dam body is provided with a protective tube, and the protective tubes in the adjacent layers of the dam body are connected between the head and tail with a semicircular tube, and an elastic tube is arranged inside the protective tube, and a temperature-sensitive optical fiber is arranged inside the elastic tube, and the outer end of the temperature-sensitive optical fiber is electrically connected to a controller; the elastic tube expands when heated and contracts when cooled, and water flows into the elastic tube, and differential pressure detectors are arranged at intervals on the elastic tube, and the differential pressure detectors are connected to a data transmission line, and the differential pressure detectors are connected to a data analysis module through the data transmission line. Through the present invention, it is possible to realize real-time monitoring of temperature changes in different sections inside the dam body, and the monitoring will not be affected by sudden temperature changes in small areas inside the dam body, and the monitoring range is larger.

Description

Technical Field

[0001] The invention relates to a dam body temperature monitoring system, belonging to the technical field of dam monitoring. Background Art

[0002] Dams are weirs used to store and intercept water from reservoirs. Based on their construction materials, they can be categorized as earth-rock dams, concrete dams, and steel gate dams. Concrete dams experience high variability in both air temperature and internal temperature during construction due to environmental fluctuations. Excessive temperature differences between the inside and outside of the dam can affect its quality, leading to cracks and other problems, and compromising its durability. Therefore, real-time temperature monitoring of the dam body is essential during construction.

[0003] Fiber optic sensors are currently commonly used to monitor the temperature of concrete dams. During the dam casting process, fiber optic sensors are cast into the dam body. Due to the complex internal structure of concrete, the temperature at a single location may suddenly rise or fall, resulting in excessive temperature variability and false alarms. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a dam body temperature monitoring system, which solves the problem of false alarm triggering when monitoring the temperature inside the dam in the prior art.

[0005] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions: a dam body temperature monitoring system, comprising a protective pipe, the protective pipe is arranged inside the dam body along the length direction of the dam body, the dam body is cast in layers, and each layer of the cast dam body is provided with a protective pipe, and the protective pipes in adjacent layers of the dam body are connected between the ends with semicircular pipes,

[0006] An elastic tube is provided in the protective tube, a temperature-sensing optical fiber is provided in the elastic tube, and an outer end portion of the temperature-sensing optical fiber is electrically connected to the controller;

[0007] The elastic tube expands when heated and contracts when cooled, water flows into the elastic tube, and differential pressure detectors are arranged at intervals on the elastic tube. The differential pressure detectors are connected to data transmission lines, and the differential pressure detectors are connected to a data analysis module via the data transmission lines.

[0008] Among them, the pressure difference detector is used to measure the water pressure difference between each section of the elastic tube, so as to obtain the degree of expansion or contraction of each section of the elastic tube under the influence of temperature. The degree of expansion and contraction of the elastic tube reflects the temperature change of the dam body in this section.

[0009] By adopting the above technical solution, temperature changes in different sections within the dam body can be monitored in real time. This monitoring is not affected by sudden temperature changes in small areas within the dam body, resulting in a larger monitoring range and lower monitoring costs. This eliminates the need to install a large number of sensors within the dam body, reducing the cost of the entire monitoring system. The sensors do not directly contact the dam body, but instead transmit temperature through water flow. Therefore, when a sudden temperature rise or fall occurs within the dam body, the water flow within the elastic tube acts as a buffer, preventing the temperature-sensing optical fiber within the elastic tube from immediately detecting the temperature, thus preventing the alarm from false alarms caused by sudden temperature rises or falls. Because the water flowing into the elastic tube is fluid, it flows through different sections of the elastic tube, being affected by the different temperatures in each section. Ultimately, a water channel with gradually varying temperatures is formed. By measuring the water temperature within the elastic tube using the temperature-sensing optical fiber and measuring the pressure difference between the sections using a differential pressure detector, the internal temperature of the dam body can be accurately monitored in real time.

[0010] The present invention is further configured as follows: the data analysis module is used to analyze and process the water flow pressure difference in different sections of the elastic tube detected by the pressure differential detector, using the data obtained by the first pressure differential detector as the first comparison data, and the subsequent pressure differential detectors use the data of the previous pressure differential detector as the detection reference to measure the pressure difference between adjacent sections of the elastic tube.

[0011] By adopting the above technical solution, the pressure difference changes between adjacent sections of the elastic tube can be measured in real time. The temperature changes of the dam body near the elastic tube can be obtained through the pressure difference changes. The temperature field of the entire dam body can be obtained through the temperature changes at different positions inside the dam body. By monitoring the temperature field inside the dam body in real time, when the temperature inside the dam body rises or falls for a long time, maintenance personnel can immediately adjust the temperature of the dam body, thereby achieving maintenance of the dam body.

[0012] The present invention is further configured as follows: the differential pressure detector is connected to a differential pressure tube, the differential pressure detector is connected to the elastic tube through two differential pressure tubes, and the distance between the connection points of the two differential pressure tubes and the elastic tube is greater than one meter.

[0013] By employing this technical solution, the differential pressure tube connects the differential pressure detector and the elastic tube, transmitting the water pressure at the connection point to the differential pressure sensor. With a distance of more than one meter, the differential pressure between each section of the elastic tube can be effectively monitored, making the pressure differential more visible.

[0014] The present invention is further configured as follows: the protective tube includes an inner half tube and an outer half tube, the inner half tube and the outer half tube are both semi-tubular, a sliding gap is reserved between the inner half tube and the outer half tube, a closed half tube is arranged in the sliding gap, and the closed half tube, the inner half tube and the outer half tube form a complete protective tube.

[0015] By adopting the above technical solution, when installing the elastic tube, the closed half-tube is moved into the sliding gap. When the elastic tube is installed, the closed half-tube is pulled out of the sliding gap. The elastic tube is wrapped in the central inner cavity by a complete protective tube consisting of the closed half-tube, the inner half-tube and the outer half-tube. When the cement is poured, the elastic tube will not be solidified by the cement, resulting in the inability to shrink and expand. At the same time, the temperature-sensing optical fiber arranged in the elastic tube can also be replaced, thereby greatly reducing the maintenance cost of the entire temperature monitoring system.

[0016] The present invention is further configured as follows: a card groove is provided on the inner wall of the inner half tube, two card blocks are provided on the section where the elastic tube is connected to the pressure differential tube, the center points of the two card blocks are connected to a pressure differential tube, and one of the card blocks is connected to another pressure differential tube.

[0017] By employing this technical solution, the interlocking engagement between the slot and the block ensures that the elastic tube is securely mounted within the inner half-tube, preventing axial movement during contraction and expansion. This secure position of the elastic tube prevents abnormal temperature fluctuations within the water flowing through the tube, thereby preventing inaccurate monitoring data.

[0018] The present invention is further configured as follows: a clamping gap with the same thickness as the sliding gap is left at the two ends where the inner half tube and the outer half tube are spliced ​​together, which is used to clamp with the end of the closed half tube when the two protective tubes are spliced ​​end to end. When the two protective tubes are spliced ​​end to end, the cross-section of the inner half tube of the protective tube fits with the cross-section of the closed half tube on the other protective tube.

[0019] By adopting the above technical solution, when the two protective tubes are spliced, since the length of the inner half tube is greater than the length of the closed half tube, the clamping gaps enclosed at both ends of the inner half tube and the outer half tube can be clamped with the ends of the closed half tube. By clamping the closed half tube and the clamping gaps with each other, the two protective tubes can be quickly spliced.

[0020] The present invention is further configured as follows: the data analysis module includes an outer protective shell, a data terminal processor is arranged inside the outer protective shell, an angle adjustment component is arranged on the outside of the outer protective shell, and a solar power generation panel with an adjustable light receiving angle is arranged on the outer protective shell through the angle adjustment component.

[0021] By adopting the above technical solution, the outer protective shell is used to place the data terminal processor. The data terminal processor is set in the external environment and is easily eroded by wind and rain. The outer protective shell can effectively protect the data analysis module. Through the setting of solar panels, the entire data analysis module can be self-powered without the need for an external power supply, thereby reducing energy consumption.

[0022] The present invention is further configured as follows: the angle adjustment assembly includes a hinged rod, the side of the solar panel is hinged to the upper side of the outer protective shell through the hinged rod, the backlight surface of the solar panel is provided with a fixed plate, an adjustment screw is rotatably provided on the fixed plate, the adjustment screw is connected to a driver, a hinged plate is rotatably sleeved on the adjustment screw, the hinged plate is rotatably hinged to a movable rod, and the other end of the movable rod is hinged to the outer protective shell.

[0023] By adopting the above technical solution, the setting of the angle adjustment component enables the solar panel to adjust its angle autonomously, so that the solar panel can always maintain the optimal lighting angle, thereby improving the power generation efficiency of the solar panel. At the same time, the solar panel is adjusted to a vertical state through the angle adjustment component, which can make large particles of dust that fall on the solar panel automatically fall off under the action of gravity, thereby playing a certain cleaning role.

[0024] The present invention is further configured as follows: an alarm light is provided on the outer protective shell, and when the temperature sensing optical fiber and the pressure differential detector simultaneously monitor abnormal temperature inside the dam body, or when one of the temperature sensing optical fiber and the pressure differential detector monitors abnormal temperature inside the dam body for a long time, the alarm light flashes.

[0025] By adopting this technical solution, when the internal temperature of the dam body becomes unbalanced, a flashing alarm light can quickly alert staff to take appropriate maintenance measures to adjust the dam body temperature. The dual monitoring of the temperature-sensing optical fiber and the pressure differential detector makes the entire monitoring system more stable.

[0026] The beneficial effects of the present invention are as follows: by passing water through the elastic tube, the temperature of the dam body can be transmitted to the temperature-sensing optical fiber through the water flow, without the temperature-sensing optical fiber directly contacting the dam body, thus preventing damage to the temperature-sensing optical fiber by the dam body. Thanks to the buffering effect of the water flow, when a short-term temperature rise or drop occurs in the dam body, the temperature-sensing optical fiber will not directly trigger the alarm light, thereby preventing false alarm light alarms. The temperature-sensing optical fiber set in the elastic tube can be replaced, making the entire monitoring system more convenient to maintain. Passing flowing water through the elastic tube can play a certain role in regulating the temperature of the dam body.

[0027] Through the solar panels with automatically adjustable angles, the entire system can achieve self-powered operation without the need for external power supply, reducing energy loss. After the dam body is poured, the temperature inside the dam body can be continuously monitored.

[0028] The flexible tube is fixed in place by a splicable protective tube, facilitating the installation of the entire device. The flexible tube does not harden during concrete pouring, ensuring that it can expand and contract with temperature changes within the dam. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the protective plate of the present invention;

[0031] Figure 3 For the present invention Figure 2 A schematic diagram of the structure at center A;

[0032] Figure 4 This is a schematic diagram of the three-dimensional structure of the protective plate of the present invention when it is spliced ​​end to end;

[0033] Figure 5 is a side view of the present invention;

[0034] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point B in the middle.

[0035] In the figure: 1. Protective tube; 2. Dam body; 3. Elastic tube; 4. Temperature-sensing optical fiber; 5. Pressure difference detector; 6. Data transmission line; 7. Data analysis module; 8. Pressure difference tube; 9. Angle adjustment assembly; 10. Clamping block; 11. Solar panel; 12. Semicircular tube; 101. Inner half tube; 102. Outer half tube; 103. Sliding gap; 104. Closed half tube; 105. Clamping gap; 701. Outer protective shell; 702. Warning light; 901. Articulated rod; 902. Fixed plate; 903. Adjusting screw; 904. Drive; 905. Articulated plate; 906. Movable rod. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further explained below with reference to specific illustrations.

[0037] like Figure 1 and Figure 2As shown, a dam body temperature monitoring system includes a protective tube 1, which is arranged inside the dam body 2 along its length. The dam body 2 is cast in layers, with each layer of the cast dam body 2 being provided with a protective tube 1. An elastic tube 3 is disposed within the protective tube 1, and a temperature-sensing optical fiber 4 is disposed within the elastic tube 3. The entire temperature-sensing optical fiber 4 extends through the elastic tube 3, which is disposed throughout the spliced ​​protective tube 1. The outer end of the temperature-sensing optical fiber 4 is electrically connected to a controller, which is configured to transmit data monitored by the temperature-sensing optical fiber 4 to a data analysis module 7.

[0038] The elastic tube 3 expands when heated and contracts when cooled. Water flows into the elastic tube 3. Pressure differential detectors 5 are arranged at intervals on the elastic tube 3. The pressure differential detectors 5 are connected to data transmission lines 6. The pressure differential detectors 5 are connected to a data analysis module 7 through the data transmission lines 6. The temperature-sensing optical fiber 4 detects the temperature of the water flow in the elastic tube 3 and transmits the data to the data analysis module 7.

[0039] The differential pressure detector 5 is used to measure the water pressure difference between the sections of the elastic tube 3, thereby obtaining the degree of expansion or contraction of each section of the elastic tube 3 under the influence of temperature. The degree of expansion and contraction of the elastic tube 3 reflects the temperature change of the dam body 2 in that section.

[0040] The temperature inside the dam body 2 is reflected by the elastic tube 3 and the water flowing through it. This allows the temperature-sensing optical fiber 4, located within the elastic tube 3, to detect temperature changes within the dam body 2 by measuring the water flow without direct contact with the dam body 2. This prevents damage to the optical fiber 4 during dam body 2 pouring, which could cause the entire monitoring system installation to fail. The optical fiber 4 within the elastic tube 3 is also replaceable. Once the concrete dam body 2 is poured, it cannot be disassembled, allowing for direct replacement, facilitating subsequent maintenance of the monitoring system.

[0041] Temperature is indirectly transmitted through water flow, and in conjunction with the differential pressure detector 5, the flashing alarm light 702 is triggered only when both sensors measure a sudden change in the internal temperature of the dam body 2, or when one of them measures a dramatic change in the internal temperature of the dam body 2 for a prolonged period. This prevents false alarms from occurring due to short-term temperature changes within the dam body 2, thereby improving the stability and accuracy of the entire monitoring system.

[0042] After the water flows through the elastic tube 3 , a temperature difference zone is gradually formed which changes with the temperature of the dam body 2 . The temperature-sensing optical fiber 4 arranged in the elastic tube 3 can quickly monitor the temperature changes in different areas inside the dam body 2 .

[0043] During the monitoring system installation, after the elastic tube 3 is secured within the protective tube 1, it is cast along with the dam body 2. As the dam body 2 is cast in layers, the width of each layer decreases upwards, starting from the bottom layer. The number of protective tubes 1 cast within the dam body 2 also decreases accordingly. Water flowing into the elastic tube 3 is pumped directly from the reservoir, entering at one end and exiting at the other end before being re-distributed to the reservoir.

[0044] The data analysis module 7 is used to analyze and process the water pressure differences within the elastic tube 3 in different sections detected by the pressure differential detectors 5. The data obtained by the first pressure differential detector 5 is used as the first comparison data. The subsequent pressure differential detectors 5 use the data of the previous pressure differential detector 5 as the monitoring reference to measure the pressure differences between adjacent sections of the elastic tube 3.

[0045] The pressure detector can obtain the temperature change of the dam body 2 near the elastic tube 3 through the pressure difference change. The temperature field of the entire dam body 2 can be obtained through the temperature changes at different positions inside the dam body 2. By real-time monitoring of the temperature field inside the dam body 2, when the temperature inside the dam body 2 rises or falls for a long time, the maintenance personnel can immediately adjust the temperature of the dam body 2, thereby achieving maintenance of the dam body 2.

[0046] The differential pressure detector 5 is connected to a differential pressure tube 8. The differential pressure detector 5 is connected to the elastic tube 3 via two differential pressure tubes 8. The distance between the connection points of the two differential pressure tubes 8 and the elastic tube 3 is greater than one meter. This sufficient spacing allows for a more intuitive reflection of the degree of contraction and expansion between each section of the elastic tube 3, resulting in a more pronounced pressure differential.

[0047] like Figure 2 As shown, the protective tube 1 includes an inner half tube 101 and an outer half tube 102 . Both the inner half tube 101 and the outer half tube 102 are semi-tubular, and their cross sections are semicircular.

[0048] Among them, the inner half pipe 101 and the outer half pipe 102 are connected for disassembly. After the inner half pipe 101 and the outer half pipe 102 are connected, a sliding gap 103 is reserved between the walls of the two. A closed half pipe 104 is slidably installed in the sliding gap 103. The closed half pipe 104, the inner half pipe 101 and the outer half pipe 102 form a complete protective pipe 1.

[0049] It should be noted that a spring is also provided within the closing gap, connected to the side of closing half-tube 104. The spring's force pushes closing half-tube 104 out of sliding gap 103, where it, along with inner half-tube 101 and outer half-tube 102, forms a protective tube 1 with a circular cross-section. To install elastic tube 3 within protective tube 1, closing half-tube 104 is manually moved, causing it to rotate into sliding gap 103. This compresses the springs attached to the closing gap and closing half-tube 104. Once elastic tube 3 is installed, closing half-tube 104 is released, and the spring pushes it back out of the closing gap.

[0050] like Figure 1 As shown, semicircular tubes 12 connect the ends of the protective tubes 1 within adjacent dam bodies 2. These semicircular tubes 12 are used for curved transitions, allowing the protective tubes 1 to be installed at adjustable angles. By connecting the cornered protective tubes 1 with each other through the semicircular tubes 12, the protective tubes 1 do not need to be machined into curved shapes, facilitating their fabrication and reducing costs.

[0051] like Figure 3 As shown, a clamping gap 105 with the same thickness as the sliding gap 103 is left at the two ends where the inner half-tube 101 and the outer half-tube 102 are spliced, which is used to clamp with the end of the closed half-tube 104 when the two protective tubes 1 are spliced ​​end to end. When the two protective tubes 1 are spliced ​​end to end, the cross-section of the inner half-tube 101 of the protective tube 1 fits with the cross-section of the closed half-tube 104 on the other protective tube 1.

[0052] In this embodiment, the interlocking gap 105 formed by the ends of the inner half-tube 101 and the outer half-tube 102 engages with the end of the closed half-tube 104, enabling quick interlocking of the protective tube 1 and facilitating the connection of the entire pipeline. When splicing two protective tubes 1, after the inner half-tube 101 and the outer half-tube 102 are connected, they are then inverted and spliced ​​with the other set of spliced ​​inner half-tubes 101 and outer half-tubes 102.

[0053] like Figure 4 As shown, the thickness of the inner half tube 101 is greater than that of the outer half tube 102, and a card groove is provided on the inner wall of the inner half tube 101. Two card blocks 10 are provided on the section where the elastic tube 3 is connected to the pressure differential tube 8. The center point of the two card blocks 10 is connected to a pressure differential tube 8, and one of the card blocks 10 is connected to another pressure differential tube 8.

[0054] The interlocking engagement between the slot and the block 10 secures the elastic tube 3 within the inner half-tube 101, preventing axial movement during contraction and expansion. This secure position of the elastic tube 3 prevents movement, thereby preventing abnormal temperature fluctuations within the water flowing through the elastic tube 3 and thus preventing distorted monitoring data.

[0055] like Figure 5 As shown, the data analysis module 7 includes an outer protective shell 701, which houses a data terminal processor. An angle adjustment assembly 9 is located outside the outer protective shell 701, and a solar panel 11 with an adjustable light receiving angle is mounted on the outer protective shell 701 via the angle adjustment assembly 9. Data measured by the temperature-sensing optical fiber 4 and the pressure detector are transmitted to the data terminal processor for processing and analysis, ultimately converting it into a temperature display. When the temperature exceeds the standard temperature range of the dam body 2, it indicates an abnormality within the dam body 2, requiring timely inspection and maintenance of the dam body 2.

[0056] The outer protective shell 701 is used to mount a fixed data terminal processor. The solar panel 11 generates electricity independently, eliminating the need for an external power source and enabling self-powered operation, thus reducing energy consumption. The solar panel 11 can be controlled by the angle adjustment assembly 9 to maintain the optimal illumination angle, significantly improving its power generation efficiency.

[0057] like Figure 6 As shown, the angle adjustment assembly 9 includes a hinge rod 901, which is used to install the solar panel 11 on the outer protective shell 701, wherein the length of the solar panel 11 is less than the height of the outer protective shell 701, and the side of the solar panel 11 is hinged to the upper side of the outer protective shell 701 through the hinge rod 901. Fixed plates 902 are fixedly installed on the upper and lower sides of the backlight surface of the solar panel 11, and an adjustment screw 903 is rotatably installed between the two fixed plates 902. The adjustment screw 903 is connected to a driver 904, which is specifically a standard motor. The rotating shaft at the end of the driver 904 is fixedly connected to one end of the adjustment screw 903. A hinge plate 905 is rotatably sleeved on the adjustment screw 903. The adjustment screw 903 passes through the through hole in the center of the hinge plate 905, and the inner wall of the through hole is processed with an internal thread that meshes with the adjustment screw 903. The hinged plate 905 is rotatably hinged to a movable rod 906, the other end of which is hinged to the outer protective shell 701. The driver 904 drives the adjustment screw 903 to rotate, causing the hinged plate 905, which is attached to the adjustment screw 903 via the threaded knob, to move along the axial direction of the adjustment screw 903. When the shaft on the driver 904 rotates forward, the hinged plate 905 moves upward along the adjustment screw 903, increasing the tilt angle of the entire solar panel 11. When the shaft on the driver 904 rotates backward, the hinged plate 905 moves downward along the adjustment screw 903, decreasing the tilt angle of the entire solar panel 11.

[0058] An alarm light 702 is provided on the outer protective shell 701, and the alarm light 702 is connected to the data terminal processor through the data transmission line 6. When the temperature sensing optical fiber 4 and the pressure difference detector 5 simultaneously monitor that the temperature inside the dam body 2 is abnormal, or one of the temperature sensing optical fiber 4 and the pressure difference detector 5 monitors that the temperature inside the dam body 2 is abnormal for a long time, a signal is transmitted to the alarm light 702 through the data terminal processor, causing the alarm light 702 to flash, thereby quickly reminding the staff to maintain the dam body 2.

[0059] Working principle: Temperature measurement is performed using a temperature-sensing optical fiber 4 and a pressure detector. The temperature-sensing optical fiber 4 measures the temperature of the water flow in the elastic tube 3, and the pressure detector measures the water pressure difference in each section of the elastic tube 3. The water pressure difference is used to determine the degree of contraction or expansion of the elastic tube 3 in each area with temperature changes, thereby determining the temperature changes of the dam body 2 in adjacent areas.

[0060] The temperature-sensing optical fiber 4 is inserted into the elastic tube 3, avoiding direct contact with the concrete dam. It monitors the temperature of the dam body 2 through the action of water flow transitions. The temperature-sensing optical fiber 4 can be replaced regularly to ensure its measurement sensitivity and thus the accuracy of the measured data. To replace the temperature-sensing optical fiber 4, the end of the temperature-sensing optical fiber 4 at the outlet of the elastic tube 3 is connected to the new temperature-sensing optical fiber 4. By pulling out the temperature-sensing optical fiber 4 inside the elastic tube 3, the new temperature-sensing optical fiber 4 is pulled into the elastic tube 3.

[0061] As for the pressure detector, pressure measurement is mainly performed through two differential pressure tubes 8 connected to the elastic tube 3 in conjunction with a pressure sensor. Since the temperature change inside the dam body 2 causes the elastic tube 3 to contract and expand, the water flow pressure passing through the elastic tubes 3 with different apertures is different. The water flow pressure flowing through the elastic tube 3 with a larger aperture is smaller. Therefore, by measuring the water flow pressure in the elastic tube 3, the contraction state of the elastic tube 3 can be indirectly reflected. The contraction state of the elastic tube 3 can also indirectly reflect the temperature condition of the dam body 2 near this section of the elastic tube 3.

[0062] For the alarm light 702, a flashing alarm will be issued only when the temperature-sensing optical fiber 4 and the pressure difference sensor jointly detect a drastic change in temperature, or when one of them detects a drastic change in the temperature inside the dam for a long time, thereby preventing the alarm light 702 from falsely alarming due to a sudden change in the temperature inside the dam body 2 in a short period of time.

[0063] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art will appreciate that the present invention is not limited to the foregoing embodiments and that various modifications and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such modifications and improvements are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dam body temperature monitoring system, characterized in that: The dam body (2) comprises a protective pipe (1), wherein the protective pipe (1) is arranged inside the dam body (2) along the length direction of the dam body (2), the dam body (2) is cast in layers, each layer of the cast dam body (2) is provided with a protective pipe (1), and the protective pipes (1) in adjacent layers of the dam body (2) are interconnected; An elastic tube (3) is arranged inside the protective tube (1), a temperature-sensitive optical fiber (4) is arranged inside the elastic tube (3), and an outer end of the temperature-sensitive optical fiber (4) is electrically connected to a controller; The elastic tube (3) expands when heated and contracts when cooled, water flows into the elastic tube (3), differential pressure detectors (5) are arranged at intervals on the elastic tube (3), the differential pressure detectors (5) are connected to data transmission lines (6), and the differential pressure detectors (5) are connected to a data analysis module (7) via the data transmission lines (6); The data analysis module (7) is used to analyze and process the water flow pressure difference in different sections of the elastic tube (3) detected by the pressure difference detector (5), with the data obtained by the first pressure difference detector (5) being used as the first comparison data, and the subsequent pressure difference detectors (5) using the data of the previous pressure difference detector (5) as the monitoring reference to measure the pressure difference between adjacent sections of the elastic tube (3); The differential pressure detector (5) is connected to a differential pressure tube (8), and the differential pressure detector (5) is connected to the elastic tube (3) via two differential pressure tubes (8), and the distance between the connection points of the two differential pressure tubes (8) and the elastic tube (3) is greater than one meter; The protective tube (1) comprises an inner half tube (101) and an outer half tube (102); the inner half tube (101) and the outer half tube (102) are both semi-tubular; a sliding gap (103) is reserved between the inner half tube (101) and the outer half tube (102); a closed half tube (104) is arranged in the sliding gap (103); the closed half tube (104) and the inner half tube (101) and the outer half tube (102) mutually surround a complete protective tube (1); The inner wall of the inner half tube (101) is provided with a clamping groove, and two clamping blocks (10) are provided on the section of the elastic tube (3) connected to the pressure differential tube (8), the center points of the two clamping blocks (10) are connected to a pressure differential tube (8), and one of the clamping blocks (10) is connected to another pressure differential tube (8); A clamping gap (105) having the same thickness as the sliding gap (103) is left at the two ends of the inner half tube (101) and the outer half tube (102) for clamping with the end of the closed half tube (104) when the two protection tubes (1) are spliced ​​end to end. When the two protection tubes (1) are spliced ​​end to end, the cross section of the inner half tube (101) of the protection tube (1) fits with the cross section of the closed half tube (104) on the other protection tube (1); The differential pressure detector (5) is used to measure the differential pressure of water flow between various sections of the elastic tube (3), thereby obtaining the degree of expansion or contraction of each section of the elastic tube (3) under the influence of temperature, and the temperature change of the dam body in this section is reflected according to the degree of contraction and expansion of the elastic tube (3); An alarm is triggered only when the differential pressure detector (5) and the temperature sensing optical fiber (4) jointly measure a sudden change in the temperature inside the dam body (2) or when one of them measures a sharp change in the temperature inside the dam body (2) for a long period of time.

2. A dam body temperature monitoring system according to claim 1, characterized in that: The data analysis module (7) comprises an outer protective shell (701), a data terminal processor is arranged inside the outer protective shell (701), an angle adjustment component (9) is arranged outside the outer protective shell (701), and a solar power generation panel (11) with an adjustable light receiving angle is arranged on the outer protective shell (701) via the angle adjustment component (9).

3. A dam body temperature monitoring system according to claim 2, characterized in that: The angle adjustment assembly (9) comprises a hinged rod (901), the side of the solar panel (11) is hinged to the upper side of the outer protective shell (701) through the hinged rod (901), the backlight surface of the solar panel (11) is provided with a fixed plate (902), an adjustment screw rod (903) is rotatably provided on the fixed plate (902), the adjustment screw rod (903) is connected to a driver (904), a hinged plate (905) is rotatably sleeved on the adjustment screw rod (903), the hinged plate (905) is rotatably hinged to a movable rod (906), and the other end of the movable rod (906) is hinged to the outer protective shell (701).

4. A dam body temperature monitoring system according to claim 2, characterized in that: The outer protective shell (701) is provided with an alarm light (702), and when the temperature sensing optical fiber (4) and the pressure difference detector (5) simultaneously detect that the temperature inside the dam body (2) is abnormal, the alarm light (702) flashes.

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