Inhaul cable intelligent dehumidification test device and test method thereof

Abstract

The invention discloses an intelligent inhaul cable dehumidification test device and a test method thereof, belongs to the technical field of bridge inhaul cables, and solves the technical problem that a test device for simulating actual working conditions is lacked at present. The device comprises a cable body, an anchorage device, a lug plate, a connecting fork lug, a pre-buried pipe, a waterproof cover and a protective cover, and further comprises a swing device, a temperature and humidity sensor, a water adding and humidifying device, a control module and a dehumidifying device, the swing device is used for simulating vibration of the inhaul cable under different load conditions, and the temperature and humidity sensor is used for detecting temperature and humidity in the waterproof cover, the protective cover and the pre-buried pipe; the dehumidification device conducts dehumidification work on the embedded pipe or the waterproof cover or the protective cover, and the water adding and humidifying device conducts water adding and humidifying on the embedded pipe or the waterproof cover or the protective cover. The testing device can intelligently adjust the internal humidity of the inhaul cable, can simulate the swinging motion of the inhaul cable in actual engineering and provide a corrosion environment possibly encountered in the operation stage of the inhaul cable, and is closer to the actual working condition to ensure that the product performance is fully verified.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge stay cables, and more specifically, it relates to an intelligent dehumidification test device for stay cables and a test method therefor. Background Art

[0002] Stay cables are key load-bearing components of cable-supported bridges. Stay cables are flexible and prone to vibration during operation under the influence of wind or vehicle passage. The anchorage area of stay cables is a weak link in sealing. Vibration of stay cables can easily cause the sealing of waterproof covers and protective covers to fail, resulting in water or water vapor ingress. Long-term corrosion will lead to the breakage of stay cables and even the collapse of bridges. Therefore, it is necessary to use a dehumidification device to remove water and moisture from the anchorage area of stay cables.

[0003] At present, only a simple test device or model can be used to preliminarily verify the dehumidification effect of the dehumidification device, which is different from the actual working conditions, and there is a lack of a test device that simulates the actual working conditions; moreover, the evaluation of the dehumidification effect of the dehumidification device is relatively subjective, and it is difficult to objectively evaluate with quantitative indicators. Summary of the Invention

[0004] The technical problem to be solved by the present invention is aimed at the above-mentioned deficiencies of the prior art. The first object of the present invention is to provide an intelligent dehumidification test device for stay cables that can effectively simulate the actual working conditions.

[0005] The second object of the present invention is to provide a test method for the intelligent dehumidification test device for stay cables.

[0006] To achieve the first object, the present invention provides an intelligent dehumidification test device for stay cables, including a cable body, an anchor, an ear plate, a connecting fork ear, a pre-embedded pipe, a waterproof cover, and a protective cover. The lower end of the connecting fork ear is installed on the ear plate, the upper end of the connecting fork ear is connected to the lower end of the pre-embedded pipe, the lower end of the cable body passes through the pre-embedded pipe and is anchored to the connecting fork ear through the anchor. The waterproof cover is installed between the upper end of the pre-embedded pipe and the cable body. The protective cover covers the lower end of the cable body and the anchor. The device further includes a swinging device, a temperature and humidity sensor, a water adding and humidifying device, a control module, and a dehumidification device. The swinging device is connected to the upper end of the cable body. Temperature and humidity sensors are provided in the waterproof cover, the protective cover, and the pre-embedded pipe. The dehumidification device is connected to the pre-embedded pipe or the waterproof cover or the protective cover through a pipeline. The water adding and humidifying device is connected to the pre-embedded pipe or the waterproof cover or the protective cover through a pipeline. The control module is communicatively connected to the temperature and humidity sensor, and the control module is electrically connected to the swinging device, the dehumidification device, and the water adding and humidifying device.

[0007] As a further improvement, it further includes an adjustable bracket for adjusting the inclination angle of the connecting fork ear and the pre-embedded pipe. The top of the adjustable bracket is connected to the connecting fork ear or the pre-embedded pipe, and the swinging device is installed on the top of the adjustable bracket.

[0008] Furthermore, an adjusting foot cup for adjusting the height is provided at the bottom of the adjustable bracket.

[0009] Furthermore, the swinging device is any one of a cylinder, an oil cylinder, an electric push rod, and a vibration motor.

[0010] Furthermore, the control module includes a control cabinet, a controller is provided inside the control cabinet, a display screen and buttons are provided on the control cabinet, the controller is communicatively connected to the temperature and humidity sensor, and the controller is electrically connected to the swinging device, the dehumidifying device, the water adding and humidifying device, the display screen and the buttons.

[0011] Furthermore, the dehumidifying device is a dehumidifier or a drying fan or a hot air blower.

[0012] Furthermore, the water adding and humidifying device is a humidifier.

[0013] Furthermore, the temperature and humidity sensor is communicatively connected to the control module in a wired or wireless manner.

[0014] Furthermore, the dehumidifying device is installed on the connecting fork ear.

[0015] In order to achieve the above-mentioned second object, the present invention provides a test method for a cable intelligent dehumidification test device, including the following steps:

[0016] Step 1. Assemble the cable intelligent dehumidification test device to ensure that the control module communicates normally with the temperature and humidity sensor, and the control module can control the swinging device, the dehumidifying device and the water adding and humidifying device to work properly;

[0017] Step 2. Set the vibration frequency and amplitude of the cable body, and the humidification speed of the embedded pipe or the waterproof cover or the protective cover in the control module according to the set working conditions;

[0018] Step 3. The control module controls the swinging device to work according to the vibration frequency and amplitude to simulate the vibration of the cable body under the load conditions of the set working conditions; at the same time, the control module controls the water adding and humidifying device to work according to the humidification speed to add water vapor to the embedded pipe or the waterproof cover or the protective cover;

[0019] Step 4. The control module obtains the temperature and humidity data inside the waterproof cover, the protective cover and the embedded pipe in real time through the temperature and humidity sensor, and the temperature and humidity data shows the temperature and humidity change trend in the form of a chart or numbers, providing a quantitative basis for evaluating the dehumidification efficiency;

[0020] Step 5. When the humidity data inside the waterproof cover or the protective cover or the embedded pipe rises to reach the first set value, the control module controls the dehumidifying device to perform dehumidification work;

[0021] Step 6. When the humidity data in the waterproof cover, protective cover or embedded pipe drops to reach the second set value, the control module controls the dehumidifying device to stop dehumidifying work;

[0022] Step 7. Change the set working conditions, and repeat Steps 2 to 6 until the tests for all set working conditions are completed, and output the test results of each set working condition.

[0023] Beneficial effects

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1. The test device of the present invention can not only adjust the humidity of the cable anchorage area, but also simulate the vibration of the cable in actual engineering. It can support single tests and long-term continuous tests, with a wide verification range and can be closer to the actual working conditions. Through this test device, the dehumidifying performance of the dehumidifying device under different conditions can be comprehensively tested.

[0026] 2. The built-in temperature and humidity sensors of this test device can monitor the temperature and humidity data in real time, accurately capture environmental changes, and the temperature and humidity data are fed back to the control module for real-time display, and the temperature and humidity change trends are displayed in the form of charts or numbers. This design can not only quantitatively evaluate the working efficiency of the dehumidifying device, but also provide a scientific basis for optimizing the test process.

[0027] 3. The operation of this test device is simple, and users can quickly get started without complex operations. Through the control of the display screen and buttons, users can easily master the temperature and humidity control and equipment operation, and the method is reliable, ensuring the stability and repeatability of the test process. Description of the drawings

[0028] Figure 1 It is a schematic structural diagram of the test device in the present invention;

[0029] Figure 2 It is a sectional view of the test device in the present invention.

[0030] Wherein: 1 - cable body, 2 - anchor, 3 - ear plate, 4 - connecting fork ear, 5 - embedded pipe, 6 - waterproof cover, 7 - protective cover, 8 - swinging device, 9 - temperature and humidity sensor, 10 - water adding and humidifying device, 11 - control module, 12 - dehumidifying device, 13 - first pipeline, 14 - second pipeline, 15 - adjustable bracket, 16 - adjusting foot cup, 17 - control cabinet, 18 - display screen, 19 - button, 20 - clamp, 21 - hinge shaft, 22 - air inlet joint, 23 - air outlet joint. Detailed implementation manners

[0031] The following further describes the present invention with reference to the specific embodiments in the drawings.

[0032] Refer toFigures 1 to 2 , a cable intelligent dehumidification test device, comprising a cable body 1, an anchor 2, an ear plate 3, a connecting fork ear 4, a buried pipe 5, a waterproof cover 6, and a protective cover 7. The ear plate 3 is fixed on the ground or workbench. The lower end of the connecting fork ear 4 is hingedly installed on the ear plate 3 through a hinge shaft 21. The upper end of the connecting fork ear 4 is connected to the lower end of the buried pipe 5. The lower end of the cable body 1 passes through the buried pipe 5 and is anchored to the connecting fork ear 4 through the anchor 2. The waterproof cover 6 is installed between the upper end of the buried pipe 5 and the cable body 1, and the protective cover 7 covers the lower end of the cable body 1 and the anchor 2.

[0033] The test device further includes a swinging device 8, a temperature and humidity sensor 9, a water adding and humidifying device 10, a control module 11, and a dehumidifying device 12. The swinging device 8 is connected to the upper end of the cable body 1 and is used to swing the upper end of the cable body 1 up and down, so as to simulate the vibration of the cable in actual engineering. Specifically, a clamp 20 is provided at the upper end of the cable body 1, and the upper end of the swinging device 8 is rotatably connected to the clamp 20. Temperature and humidity sensors 9 are provided in the waterproof cover 6, the protective cover 7, and the buried pipe 5, and are used to monitor the temperature and humidity data in the waterproof cover 6, the protective cover 7, and the buried pipe 5 in real time, and accurately capture environmental changes. The dehumidifying device 12 is connected to the buried pipe 5 or the waterproof cover 6 or the protective cover 7 through a first pipeline 13 and is used to dehumidify the anchorage area of the cable. The water adding and humidifying device 10 is connected to the buried pipe 5 or the waterproof cover 6 or the protective cover 7 through a second pipeline 14 and is used to add water vapor to the buried pipe 5 or the waterproof cover 6 or the protective cover 7 to adjust the humidity of the cable anchorage area. The control module 11 is communicatively connected to the temperature and humidity sensor 9 to obtain the temperature and humidity data in the waterproof cover 6, the protective cover 7, and the buried pipe 5. The control module 11 is electrically connected to the swinging device 8, the dehumidifying device 12, and the water adding and humidifying device 10 and is used to control the operation of the swinging device 8, the dehumidifying device 12, and the water adding and humidifying device 10.

[0034] The test device further includes an adjustable bracket 15 for adjusting the inclination angle of the connecting fork ear 4 and the buried pipe 5. The top of the adjustable bracket 15 is connected to the connecting fork ear 4 or the buried pipe 5, and the swinging device 8 is installed on the top of the adjustable bracket 15. Specifically, an adjusting foot cup 16 for adjusting the height is provided at the bottom of the adjustable bracket 15. The height of the adjustable bracket 15 is adjusted through the adjusting foot cup 16, so as to adjust the inclination angle of the connecting fork ear 4 and the buried pipe 5 and simulate the inclination angle of the cable in actual engineering.

[0035] In this embodiment, the swinging device 8 is any one of a cylinder, an oil cylinder, an electric push rod, and a vibration motor.

[0036] Of course, in other embodiments, the swinging device 8 can also be a crank and connecting rod mechanism driven by a motor.

[0037] The control module 11 includes a control cabinet 17. Inside the control cabinet 17, there is a controller (such as an industrial control computer). The control cabinet 17 is provided with a display screen 18 and buttons 19. The controller is communicatively connected to the temperature and humidity sensor 9, and the controller is electrically connected to the swinging device 8, the dehumidifying device 12, the water adding and humidifying device 10, the display screen 18 and the buttons 19. The controller obtains the temperature and humidity data inside the waterproof cover 6, the protective cover 7 and the embedded pipe 5 in real time through the temperature and humidity sensor 9. The temperature and humidity data shows the changing trend of temperature and humidity in the form of charts or numbers on the display screen 18, providing a quantitative basis for evaluating the dehumidification efficiency. The buttons 19 are used to set test parameters and control the swinging device 8, the dehumidifying device 12, and the water adding and humidifying device 10 to work.

[0038] The dehumidifying device 12 is a dehumidifier or a drying fan or a hot air blower.

[0039] Such as Figure 2 As shown, the protective cover 7 is provided with an air inlet joint 22, and the upper end of the embedded pipe 5 is provided with an air outlet joint 23. Both the air inlet joint 22 and the air outlet joint 23 are provided with solenoid valves, and the solenoid valves are electrically connected to the controller inside the control cabinet 17.

[0040] Of course, air inlet joints 22 and air outlet joints 23 can also be provided on the waterproof cover 6, the protective cover 7 and the embedded pipe 5 to improve the dehumidification efficiency.

[0041] When the dehumidifying device 12 is a dehumidifier, the air inlet of the dehumidifier is connected to the air outlet joint 23, and the air outlet of the dehumidifier is connected to the air inlet joint 22. That is, the air inlet and outlet of the dehumidifier are respectively connected to the air outlet joint 23 and the air inlet joint 22 through the first pipe 13 to realize gas circulation, thereby realizing dehumidification in the cable anchorage area.

[0042] When the dehumidifying device 12 is a drying fan or a hot air blower, the air outlet of the drying fan or the hot air blower is connected to the air inlet joint 22. The drying fan or the hot air blower inputs dry air or hot air into the protective cover 7 and discharges it from the air outlet joint 23, thereby realizing dehumidification in the cable anchorage area.

[0043] In this embodiment, the water adding and humidifying device 10 is a humidifier. The water vapor generated by the humidifier is introduced into the embedded pipe 5 or the waterproof cover 6 or the protective cover 7 through the second pipe 14 to adjust the humidity of the cable anchorage area.

[0044] The temperature and humidity sensor 9 is communicatively connected to the control module 11 in a wired or wireless manner.

[0045] The dehumidifying device 12 is installed on the connecting fork ear 4. The dehumidifying device 12 moves along with the connecting fork ear 4, which can reduce the influence of the movement of the connecting fork ear 4 on the first pipe 13 and reduce the influence on the dehumidification performance.

[0046] A test method for a cable intelligent dehumidification test device includes the following steps:

[0047] Step 1. Assemble the intelligent dehumidification test device for stay cables, ensure normal communication between the control module 11 and the temperature and humidity sensor 9, and ensure that the control module 11 can control the swing device 8, the dehumidification device 12, and the water addition and humidification device 10 to work properly;

[0048] Step 2. Set the vibration frequency and amplitude of the cable body 1, as well as the humidification speed of the embedded pipe 5 or the waterproof cover 6 or the protective cover 7 in the control module 11 according to the set working conditions;

[0049] Step 3. The control module 11 controls the swing device 8 to work according to the vibration frequency and amplitude to simulate the vibration of the cable body 1 under the load conditions of the set working conditions; at the same time, the control module 11 controls the water addition and humidification device 10 to work according to the humidification speed to add water vapor to the embedded pipe 5 or the waterproof cover 6 or the protective cover 7;

[0050] Step 4. The control module 11 obtains the temperature and humidity data inside the waterproof cover 6, the protective cover 7, and the embedded pipe 5 in real time through the temperature and humidity sensor 9, accurately captures the environmental changes, and the temperature and humidity data shows the temperature and humidity change trend in the form of a chart or numbers and is displayed on the display screen 18, providing a quantitative basis for evaluating the dehumidification efficiency of the dehumidification device 12;

[0051] Step 5. When the humidity data inside the waterproof cover 6 or the protective cover 7 or the embedded pipe 5 rises to reach the first set value, the control module 11 controls the solenoid valves of the air inlet joint 22 and the exhaust joint 23 to open, and the control module 11 controls the dehumidification device 12 to perform dehumidification work;

[0052] Step 6. When the humidity data inside the waterproof cover 6 or the protective cover 7 or the embedded pipe 5 drops to reach the second set value, the control module 11 controls the solenoid valves of the air inlet joint 22 and the exhaust joint 23 to close, and the control module 11 controls the dehumidification device 12 to stop dehumidification work; when the first set value is greater than the second set value, it is to avoid frequent start and stop of the dehumidification device 12;

[0053] Step 7. Change the set working conditions, and repeat Step 2 to Step 6 until the tests for all set working conditions are completed, and output the test results of each set working condition.

[0054] The above is only the preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, and these will not affect the implementation effect of the present invention and the practicality of the patent.

Claims

1. A cable intelligent dehumidification test device, comprising a cable body (1), an anchor (2), an ear plate (3), a connecting fork ear (4), a pre-embedded pipe (5), a waterproof cover (6), and a protective cover (7). The lower end of the connecting fork ear (4) is installed on the ear plate (3), the upper end of the connecting fork ear (4) is connected to the lower end of the pre-embedded pipe (5), the lower end of the cable body (1) passes through the pre-embedded pipe (5) and is anchored to the connecting fork ear (4) through the anchor (2). The waterproof cover (6) is installed between the upper end of the pre-embedded pipe (5) and the cable body (1), and the protective cover (7) covers the lower end of the cable body (1) and the anchor (2). It is characterized in that, It further includes a swing device (8), a temperature and humidity sensor (9), a water adding and humidifying device (10), a control module (11), and a dehumidifying device (12). The swing device (8) is connected to the upper end of the cable body (1). The temperature and humidity sensor (9) is provided in the waterproof cover (6), the protective cover (7), and the embedded pipe (5). The dehumidifying device (12) is communicated with the embedded pipe (5), or the waterproof cover (6), or the protective cover (7) through a first pipeline (13). The water adding and humidifying device (10) is communicated with the embedded pipe (5), or the waterproof cover (6), or the protective cover (7) through a second pipeline (14). The control module (11) is communicatively connected to the temperature and humidity sensor (9), and the control module (11) is electrically connected to the swing device (8), the dehumidifying device (12), and the water adding and humidifying device (10).

2. The intelligent dehumidification test device for stay cables according to claim 1, characterized in that, It further includes an adjustable bracket (15) for adjusting the inclination angle of the connecting fork ear (4) and the embedded pipe (5). The top of the adjustable bracket (15) is connected to the connecting fork ear (4) or the embedded pipe (5). The swing device (8) is installed on the top of the adjustable bracket (15).

3. The intelligent dehumidification test device for stay cables according to claim 2, wherein The bottom of the adjustable bracket (15) is provided with an adjusting foot cup (16) for adjusting the height.

4. The intelligent dehumidification test device for stay cables according to claim 1, characterized in that The swing device (8) is any one of a cylinder, an oil cylinder, an electric push rod, and a vibration motor.

5. The intelligent dehumidification test device for stay cables according to claim 1, characterized in that, The control module (11) includes a control cabinet (17). A controller is provided in the control cabinet (17). The control cabinet (17) is provided with a display screen (18) and a button (19). The controller is communicatively connected to the temperature and humidity sensor (9), and the controller is electrically connected to the swing device (8), the dehumidifying device (12), the water adding and humidifying device (10), the display screen (18), and the button (19).

6. The intelligent dehumidification test device for stay cables according to claim 1, wherein, The dehumidifying device (12) is a dehumidifier, or a drying fan, or a hot air blower.

7. The intelligent dehumidification test device for stay cables according to claim 1, characterized in that, The water adding and humidifying device (10) is a humidifier.

8. The intelligent dehumidification test device for stay cables according to claim 1, wherein The temperature and humidity sensor (9) is communicatively connected to the control module (11) in a wired or wireless manner.

9. The intelligent dehumidification test device for stay cables according to claim 1, wherein, The dehumidifying device (12) is installed on the connecting fork ear (4).

10. A test method for a cable intelligent dehumidification test device, characterized in that, It includes the following steps: Step 1. Assemble the cable intelligent dehumidification test device to ensure that the control module (11) communicates normally with the temperature and humidity sensor (9), and the control module (11) can control the swing device (8), the dehumidifying device (12), and the water adding and humidifying device (10) to work normally; Step 2. Set the vibration frequency and amplitude of the cable body (1) and the humidifying speed of the embedded pipe (5), or the waterproof cover (6), or the protective cover (7) in the control module (11) according to the set working conditions; Step 3. The control module (11) controls the swing device (8) to work according to the vibration frequency and amplitude to simulate the vibration of the cable body (1) under the load conditions of the set working conditions. At the same time, the control module (11) controls the water adding and humidifying device (10) to work according to the humidifying speed to add water vapor to the embedded pipe (5), or the waterproof cover (6), or the protective cover (7); Step 4. The control module (11) obtains the temperature and humidity data inside the waterproof cover (6), the protective cover (7) and the embedded pipe (5) in real time through the temperature and humidity sensor (9). The temperature and humidity data shows the changing trend of temperature and humidity in the form of charts or numbers, providing a quantitative basis for evaluating the dehumidification efficiency; Step 5. When the humidity data inside the waterproof cover (6), the protective cover (7) or the embedded pipe (5) rises to reach the first set value, the control module (11) controls the dehumidification device (12) to carry out dehumidification work; Step 6. When the humidity data inside the waterproof cover (6), the protective cover (7) or the embedded pipe (5) drops to reach the second set value, the control module (11) controls the dehumidification device (12) to stop dehumidification work; Step 7. Change the set working conditions, and repeat Step 2 to Step 6 until the tests for all set working conditions are completed, and output the test results of each set working condition.

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