A device for detecting water tightness of a cable

Abstract

The application discloses a kind of cable water-tightness detection devices, it is related to cable detection equipment technical field.The cable water-tightness detection device, including support frame, the support frame top is provided with detection mechanism, the detection mechanism right side is fixedly connected with pre-check mechanism, the pre-check mechanism right side is fixedly connected with cleaning mechanism, the detection mechanism includes steel pipe container, the steel pipe container left is provided with first anchor, the steel pipe container right side is fixedly connected with second anchor.The cable water-tightness detection device, by making cable from right to left gradually through first laminating film and second laminating film, the pressure inside detection tube gradually rises, after pressure rises, when cable outer wall produces defect breakage, will make the air pressure inside detection tube continue to drop, make warning whistle stop emitting sound, and then remind detection personnel, there is breakage in the cable outer wall, to avoid to damaged cable to detect and produce false detection results.

Description

Technical Field

[0001] This invention relates to the field of cable testing equipment technology, specifically to a cable water tightness testing device. Background Technology

[0002] Cables are crucial load-bearing components in cable-stayed bridges. Like slender yet strong skeletons, they suspend the wide bridge deck firmly from the towering bridge towers at an incline, effectively transferring various loads such as vehicles and pedestrians from the bridge deck to the towers and foundations. This not only significantly improves the overall rigidity and spanning capacity of the bridge, enabling it to cross rivers, lakes, and seas with an elegant and graceful posture, but also creates the iconic fan-shaped or radial aesthetic visual of cable-stayed bridges.

[0003] Chinese Patent Application No. 202210343195.4 discloses a cable water tightness testing device, comprising: a container having a receiving space and a testing hole communicating with the receiving space, the testing hole being located at a first end of the container; a clamp disposed at a second end of the container, the clamp being used to fix the cable; a heating unit for heating the liquid located in the container; and a driving unit for applying a force to the cable away from the clamp.

[0004] The cable is tested in a simulated environment to check its water tightness by checking whether external liquids have entered the cable. If the outer sealing structure of the cable is damaged before the test, external liquids will enter the cable, resulting in false test results and affecting the accuracy of the test. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a cable water tightness testing device to solve the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cable water tightness testing device, comprising a support frame, a testing mechanism at the top of the support frame, a pre-inspection mechanism fixedly connected to the right side of the testing mechanism, a cleaning mechanism fixedly connected to the right side of the pre-inspection mechanism, the testing mechanism comprising a steel pipe container, a first anchorage at the left side of the steel pipe container, a second anchorage fixedly connected to the right side of the steel pipe container, and a temperature regulating device connected to an external control device, which uses an internal silicone rubber heating element to regulate and stabilize the temperature of the colored solution;

[0007] Pre-inspection agencies include:

[0008] The detection tube is fixedly connected to the right side of the second anchor.

[0009] An air intake pressurization pipe is fixedly connected to the top of the detection pipe;

[0010] A warning whistle is installed on the outside of the air intake pressurization pipe.

[0011] Preferably, an axial jack is fixedly connected to the left side of the steel pipe container, and the left side of the axial jack is fixedly connected to the first anchor. A pressure sensor is provided between the first anchor and the axial jack. A temperature regulating device is fixedly connected to the outer wall of the steel pipe container. Both the first anchor and the second anchor have structures for fixing the cables inside.

[0012] Preferably, a first bonding film is fixedly connected inside the detection tube on the left side of the air intake pressurization pipe, and a second bonding film is fixedly connected inside the detection tube on the right side of the air intake pressurization pipe.

[0013] Preferably, a first motor is fixedly connected to the top of the intake pressurization pipe, a first blade is fixedly connected to the bottom output shaft of the first motor inside the intake pressurization pipe, a constant pressure relief valve is fixedly connected to the outer wall of the intake pressurization pipe, and the exhaust port on the outside of the constant pressure relief valve is fixedly connected to a warning whistle.

[0014] Preferably, the cleaning mechanism includes a cleaning pipe, with an inlet pipe fixedly connected to the top of the cleaning pipe and a discharge hood fixedly connected to the bottom of the cleaning pipe.

[0015] Preferably, a cleaning nozzle is fixedly connected to the top of the inlet pipe, and a second motor is fixedly connected to the bottom of the discharge hood. A second blade is fixedly connected to the top output shaft of the second motor inside the discharge hood. A collection container is provided at the bottom of the second blade to receive wastewater generated during cleaning. A connection port is provided at the top of the cleaning nozzle for connecting to an external water pipe. The external water pipe provides water pressure, enabling water to spray from the bottom of the cleaning nozzle.

[0016] Preferably, a cleaning frame is movably connected to the inside of the cleaning tube on the right side of the liquid inlet tube via a bearing, and a brush is provided on the inner wall of the cleaning frame.

[0017] Preferably, the outer wall of the cleaning frame is provided with teeth, the bottom of the cleaning pipe is fixedly connected to a third motor, and the right output shaft of the third motor is fixedly connected to a gear, which meshes with the teeth on the cleaning frame.

[0018] This invention provides a device for detecting the water tightness of cables. It has the following advantages:

[0019] 1. The cable water tightness testing device gradually increases the pressure inside the testing tube by passing the cable through the first and second bonding films from right to left. When the outer wall of the cable is damaged due to the increased pressure, the air pressure inside the testing tube will continuously decrease, causing the warning whistle to stop sounding. This alerts the testing personnel that the outer wall of the cable is damaged, thus avoiding incorrect test results due to testing a damaged cable.

[0020] 2. This cable water tightness testing device uses water sprayed from the bottom of the cleaning nozzle to wash the cable surface. A brush on a rotating cleaning frame further agitates the cable surface. After brushing, the brush moves to the bottom of the cleaning nozzle, allowing water to rinse the brushed area. This further prevents impurities from adhering to the cable surface, exposing defects and facilitating pre-inspection by the pre-inspection agency. This avoids testing damaged cables and producing incorrect test results.

[0021] 3. In this cable water tightness testing device, the water sprayed from the bottom of the cleaning nozzle adheres to the surface of the cable. This layer of water fills the gap between the first bonding film and the second bonding film in contact with the cable surface, further improving the air tightness of the first and second bonding films. This prevents gas from leaking out due to pits on the cable surface, thus avoiding false detections and further improving the accuracy of the test. Attached Figure Description

[0022] Figure 1 This is a front-view stereoscopic structural diagram of the present invention;

[0023] Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle;

[0024] Figure 3 for Figure 1 Enlarged structural diagram of section B in the middle;

[0025] Figure 4 This is a schematic diagram of the rear three-dimensional structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the left-side stereoscopic structure of the present invention;

[0027] Figure 6 for Figure 1 Schematic diagram of cross-section structure;

[0028] Figure 7 for Figure 6 Enlarged structural diagram of section C;

[0029] Figure 8 for Figure 6 Enlarged structural diagram of section D in the middle;

[0030] Figure 9 for Figure 6 Enlarged structural diagram of section E in the middle;

[0031] Figure 10 This is a schematic diagram of the cleaning frame structure of the present invention.

[0032] In the diagram: 1. Support frame; 2. Detection mechanism; 21. Steel pipe container; 22. Temperature control device; 23. First anchor; 24. Second anchor; 25. Axial jack; 3. Pre-inspection mechanism; 31. Detection pipe; 32. Air inlet pressurization pipe; 33. First motor; 34. First blade; 35. First bonding membrane; 36. Second bonding membrane; 37. Constant pressure relief valve; 38. Warning whistle; 4. Cleaning mechanism; 41. Cleaning pipe; 42. Liquid inlet pipe; 43. Discharge hood; 44. Second motor; 45. Second blade; 46. Cleaning frame; 47. Third motor; 48. Collection container; 49. Cleaning nozzle. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0035] Example 1: Please refer to Figures 1-4 The present invention provides a technical solution: a cable water tightness testing device, including a support frame 1, a testing mechanism 2 is provided on the top of the support frame 1, a pre-inspection mechanism 3 is fixedly connected to the right side of the testing mechanism 2, a cleaning mechanism 4 is fixedly connected to the right side of the pre-inspection mechanism 3, the testing mechanism 2 includes a steel pipe container 21, a first anchor 23 is provided on the left side of the steel pipe container 21, and a second anchor 24 is fixedly connected to the right side of the steel pipe container 21.

[0036] Pre-inspection agency 3 includes:

[0037] Detection tube 31 is fixedly connected to the right side of the second anchor 24;

[0038] The air intake pressurization pipe 32 is fixedly connected to the top of the detection pipe 31;

[0039] Warning whistle 38 is located outside the intake pressurization pipe 32.

[0040] An axial jack 25 is fixedly connected to the left side of the steel pipe container 21. The left side of the axial jack 25 is fixedly connected to the first anchor 23, and a pressure sensor is installed between the first anchor 23 and the axial jack 25. A temperature regulating device 22 is fixedly connected to the outer wall of the steel pipe container 21. Both the first anchor 23 and the second anchor 24 have structures for fixing the cables inside. The temperature regulating device 22 is connected to an external control device, and it uses an internal silicone rubber heating element to regulate and stabilize the temperature of the colored solution.

[0041] In a simulated cable-stayed bridge operating environment, indicator test strips were placed between the cable-stayed bridge wires and the high-strength polyester fiber tape, between the sheath and the wires, and between the sheath and the heat-shrink sleeve.

[0042] Pass the cable through from right to left, allowing it to be inspected by the pre-inspection mechanism 3. The inspection result is determined by the sound of the warning whistle 38. If the inspection fails, a new cable is replaced.

[0043] By using the corresponding fixing structure, the two ends of the pre-inspection cable are respectively fixed inside the first anchor 23 and the second anchor 24, while ensuring that the first anchor 23 can move laterally with a displacement distance greater than or equal to 200mm. The temperature control range of the temperature regulating device 22 is room temperature to 70℃ with an accuracy of 1℃. Subsequently, the axial jack 25 is used to apply axial tension to the cable, with a range of 0 to 10000kN and an accuracy of 1kN.

[0044] At ambient temperature, the stay cable is subjected to axial cyclic loading for n1 cycles. After the cyclic loading is completed, a certain load is maintained for a certain duration. Then, a colored solution is injected into the steel pipe container 21, maintaining a certain depth h of the solution, and maintaining it at ambient temperature for a certain duration t1. Subsequently, for a period of time t2, the water temperature cyclically changes within a certain range. When the water temperature changes to a specific temperature, a lateral displacement of n2 cycles is applied. After the test is completed, the cable is left to stand at ambient temperature for a period of time t3. The cable tension is released, the stay cable is removed, and it is dissected to check the color change of the test paper inside the cable. If there is no color change, it proves that the cable has good water tightness; otherwise, it proves that it is unqualified.

[0045] Example 2: Please refer to Figures 1-9 Based on Embodiment 1, the present invention provides a technical solution:

[0046] The detection tube 31 is fixedly connected to the first bonding membrane 35 on the left side of the intake pressurization tube 32, and the detection tube 31 is fixedly connected to the second bonding membrane 36 on the right side of the intake pressurization tube 32.

[0047] A first motor 33 is fixedly connected to the top of the intake pressurization pipe 32. The bottom output shaft of the first motor 33 is fixedly connected to the first blade 34 inside the intake pressurization pipe 32. A constant pressure relief valve 37 is fixedly connected to the outer wall of the intake pressurization pipe 32. The exhaust port on the outside of the constant pressure relief valve 37 is fixedly connected to the warning whistle 38.

[0048] The cable is gradually passed through the first bonding film 35 and the second bonding film 36 from right to left. During this process, the first motor 33 drives the first blade 34 to rotate. The first blade 34 pushes outside air into the detection tube 31, increasing the pressure inside the detection tube 31. This increased pressure pushes the first bonding film 35 and the second bonding film 36 together. The small opening fits snugly against the outer wall of the cable, preventing a large amount of air from leaking out. This causes the pressure inside the detection tube 31 to gradually increase. As the pressure increases, the air pressure opens the valve inside the constant pressure relief valve 37, allowing airflow to escape through the warning whistle 38 and causing it to sound. When the outer wall of the cable is damaged, the air pressure inside the detection tube 31 pushes the gas through the damaged area and out of the detection tube 31, causing the air pressure inside the detection tube 31 to drop continuously. This results in insufficient air pressure inside the detection tube 31 to push the gas out of the constant pressure relief valve 37 to the warning whistle 38, further stopping the warning whistle 38 from sounding and alerting the inspectors that the outer wall of the cable is damaged.

[0049] Example 3: Please refer to Figures 1-10 Based on Embodiment 1 and Embodiment 2, the present invention provides a technical solution:

[0050] Some impurities can clog the damaged parts of the cable. When they come into contact with the solution later, the impurities absorb the liquid, expand and leave the damaged parts, causing the solution to enter the cable through the damaged parts, resulting in false color changes in the test results.

[0051] The cleaning mechanism 4 includes a cleaning pipe 41, with an inlet pipe 42 fixedly connected to the top of the cleaning pipe 41 and a discharge hood 43 fixedly connected to the bottom of the cleaning pipe 41.

[0052] A cleaning nozzle 49 is fixedly connected to the top of the inlet pipe 42, and a second motor 44 is fixedly connected to the bottom of the discharge hood 43. The output shaft of the second motor 44 is located inside the discharge hood 43 and fixedly connected to a second blade 45. A collection container 48 is provided at the bottom of the second blade 45 to receive the wastewater generated during cleaning. The cleaning nozzle 49 has a connection port at the top for connecting to an external water pipe. The external water pipe provides water pressure, enabling water to spray out from the bottom of the cleaning nozzle 49.

[0053] The top of the cleaning nozzle 49 is connected to the external water channel, and the water on the outer wall is discharged into the cleaning pipe 41 through the cleaning nozzle 49. The water sprayed from the bottom of the cleaning nozzle 49 will wash the surface of the cable and clean the surface of the cable. At the same time, the second motor 44 drives the second blade 45 to rotate, which discharges the air inside the cleaning pipe 41 to the bottom, so that the water washed on the surface of the cable is discharged into the collection container 48 through the second blade 45 for collection.

[0054] Furthermore, the water sprayed from the bottom of the cleaning nozzle 49 cleans the cable surface, causing a layer of water to adhere to the cable surface. When the cable passes through the first bonding film 35 and the second bonding film 36, the water on the cable surface fills the gap between the first bonding film 35 and the second bonding film 36 and the cable surface, further improving the airtightness of the first bonding film 35 and the second bonding film 36. This prevents gas leakage due to pits on the cable surface. At the same time, cleaning the cable surface can prevent impurities from pushing up the second bonding film 36 as the cable moves, thus preventing gas leakage and false detection.

[0055] The rinsing water, combined with the brush, can more effectively remove impurities from the surface of the cable. Inside the cleaning pipe 41, to the right of the inlet pipe 42, is a cleaning frame 46 that is movably connected via a bearing. The inner wall of the cleaning frame 46 is equipped with a brush.

[0056] The outer wall of the cleaning frame 46 is provided with teeth, and the bottom of the cleaning pipe 41 is fixedly connected to a third motor 47. The output shaft on the right side of the third motor 47 is fixedly connected to a gear, and the gear meshes with the teeth on the cleaning frame 46.

[0057] Water discharged from the bottom of the cleaning nozzle 49 flows down the inclined cable surface to the brush of the cleaning frame 46, causing the third motor 47 to drive the corresponding gear to rotate, which in turn drives the cleaning frame 46 to rotate. This causes the brush on the cleaning frame 46 to brush the cable surface, cleaning it. When the left end of the cable moves toward the first anchor 23, the brush on the cleaning frame 46 will move to the bottom of the cleaning nozzle 49, allowing water to rinse the brushed area and further prevent impurities from adhering to the cable surface.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cable water tightness testing device, comprising a support frame (1), characterized in that: The support frame (1) is provided with a detection mechanism (2) at the top. A pre-inspection mechanism (3) is fixedly connected to the right side of the detection mechanism (2). A cleaning mechanism (4) is fixedly connected to the right side of the pre-inspection mechanism (3). The detection mechanism (2) includes a steel pipe container (21). A first anchor (23) is provided on the left side of the steel pipe container (21). A second anchor (24) is fixedly connected to the right side of the steel pipe container (21). Pre-inspection agencies (3) include: The detection tube (31) is fixedly connected to the right side of the second anchor (24); An intake pressurization pipe (32) is fixedly connected to the top of the detection pipe (31); A warning whistle (38) is located on the outside of the intake pressurization pipe (32); The detection tube (31) is fixedly connected to the left side of the air intake pressurization tube (32) with a first bonding membrane (35), and the detection tube (31) is fixedly connected to the right side of the air intake pressurization tube (32) with a second bonding membrane (36). The top of the air intake pressurization pipe (32) is fixedly connected to a first motor (33), the bottom output shaft of the first motor (33) is located inside the air intake pressurization pipe (32) and a first blade (34) is fixedly connected to it. The outer wall of the air intake pressurization pipe (32) is fixedly connected to a constant pressure relief valve (37), and the exhaust port on the outside of the constant pressure relief valve (37) is fixedly connected to a warning whistle (38). During the test, the cable is passed from right to left through the first bonding membrane 35 and the second bonding membrane 36. The pressure inside the detection tube is gradually increased by the first blade (34), and the warning whistle (38) stops emitting sound, thus detecting the damage.

2. The cable water tightness testing device according to claim 1, characterized in that: An axial jack (25) is fixedly connected to the left side of the steel pipe container (21). The left side of the axial jack (25) is fixedly connected to the first anchor (23). A pressure sensor is provided between the first anchor (23) and the axial jack (25). A temperature regulating device (22) is fixedly connected to the outer wall of the steel pipe container (21). The first anchor (23) and the second anchor (24) are both provided with structures for fixing the cable.

3. The cable water tightness testing device according to claim 1, characterized in that: The cleaning mechanism (4) includes a cleaning pipe (41), with an inlet pipe (42) fixedly connected to the top of the cleaning pipe (41) and a discharge hood (43) fixedly connected to the bottom of the cleaning pipe (41).

4. The cable water tightness testing device according to claim 3, characterized in that: A cleaning nozzle (49) is fixedly connected to the top of the inlet pipe (42), and a second motor (44) is fixedly connected to the bottom of the discharge hood (43). The top output shaft of the second motor (44) is located inside the discharge hood (43) and a second blade (45) is fixedly connected to it. A collection container (48) is provided at the bottom of the second blade (45).

5. The cable water tightness testing device according to claim 4, characterized in that: The cleaning tube (41) is located inside the inlet tube (42) and is connected to the cleaning frame (46) via a bearing. The inner wall of the cleaning frame (46) is provided with a brush.

6. The cable water tightness testing device according to claim 5, characterized in that: The outer wall of the cleaning frame (46) is provided with teeth, and the bottom of the cleaning pipe (41) is fixedly connected to a third motor (47). The output shaft on the right side of the third motor (47) is fixedly connected to a gear, and the gear meshes with the teeth on the cleaning frame (46).

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