Installation device for corrosion monitoring system in port bucket type foundation structure

Abstract

The utility model discloses a mounting device for a corrosion monitoring system in a port bucket-type foundation structure, which comprises a bucket-type foundation structure formed by a reinforcement cage and a connecting steel bar fixedly connected with at least two steel bars on the reinforcement cage, the anode ladder is assembled on the reinforcement cage through an adjusting mechanism with an insulating layer; the two sides of the cathode bar are connected with the connecting steel bar and the anode ladder through a first insulating tube and a second insulating tube respectively, and the cathode bar and the anode ladder are fixed at preset positions in advance through the first end of the first insulating tube and the two ends of the second insulating tube. According to the utility model, not only is the insulating property of the whole monitoring improved, but also the assembly firmness is improved.

Description

Technical Field

[0001] This utility model relates to the field of monitoring system installation technology, and in particular to an installation device for a corrosion monitoring system in a port barrel foundation structure. Background Technology

[0002] Traditional anode ladder sensors are typically secured to the reinforcing cage using plastic cable ties and wrapped with insulating material during installation to prevent electrical contact. However, this method of fixing has significant drawbacks during concrete pouring and vibration compaction:

[0003] Insufficient structural stability: The plastic binding straps are prone to loosening due to vibration and impact, causing the sensor components to shift and violating the preset installation angle and protective layer thickness requirements;

[0004] Insulation failure risk: The insulation material covering the sensor is prone to falling off during construction, causing some areas of the sensor to make electrical contact with the steel cage, interfering with the accuracy of the monitoring signal;

[0005] Poor coordination during installation: The cathode rod needs to be repositioned within the cast-in-place breast wall base slab, which can easily lead to deviations in relative position from the anode ladder due to space constraints. Furthermore, the transmission line lacks effective protection and is easily damaged during construction. Utility Model Content

[0006] The purpose of this invention is to provide an installation device for a corrosion monitoring system in a port barrel foundation structure, so as to solve the above-mentioned existing problems.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0008] An installation device for a corrosion monitoring system in a port barrel foundation structure includes a barrel foundation structure composed of a steel cage, a connecting steel bar fixed to at least two steel bars on the steel cage, and an anode ladder assembled on the steel cage by a gripping mechanism.

[0009] The cathode rod is connected to the connecting steel bar and the anode ladder on both sides by insulating tube one and insulating tube two, respectively. The cathode rod and the anode ladder are pre-fixed in a preset position through the first end of insulating tube one and the two ends of insulating tube two.

[0010] Furthermore, the second end of the insulating tube is provided with a gripping mechanism, which grips and locks the connecting steel bar.

[0011] Furthermore, the reinforcing cage forms at least two layers, with the connecting reinforcing bars located inside the outermost reinforcing cage and fixedly connected to at least two points in the outermost reinforcing cage.

[0012] Furthermore, it also includes a riveting terminal that is riveted to the connecting steel bar, wherein a heat shrink sleeve is fitted at the riveting point.

[0013] Furthermore, the gripping mechanism includes an insulating tube three sleeved on the connecting steel bar. The insulating tube three has an arc-shaped claw rotatably connected to its side via a connecting tube. The two ends of the arc-shaped claw are provided with a locking mechanism facing the anode ladder.

[0014] Furthermore, a gripping mechanism three is formed on the side of the insulating tube two near the anode ladder, and the gripping mechanism three locks the anode ladder by insulating bolts.

[0015] Furthermore, the insulating tube one and the insulating tube two are rotatably equipped with a gripping mechanism four that grips the cathode rod near the cathode rod.

[0016] Furthermore, the distance between the anode ladder and the concrete at the reinforced cage after pouring is 10-15mm.

[0017] Furthermore, both insulating tube one and insulating tube two are plastic tubes, and the plastic tubes are formed by connecting at least two sections. Insulating tube one and insulating tube two are respectively provided with transmission cables for connecting the cathode rod to the connecting steel bar and the anode ladder.

[0018] Furthermore, the two ends of the plastic tube are located in the water level fluctuation area and the splash area of ​​the tank, respectively, and the anode ladder and the cathode rod are located in the water level fluctuation area and the splash area of ​​the tank, respectively.

[0019] The beneficial effects of this utility model are as follows:

[0020] In this invention, the anode ladder system formed by the anode ladder is fixed by the gripping mechanism and various rotating connections, rotations and locking mechanisms, thereby ensuring a stable connection of the entire structure and reducing the occurrence of problems such as detachment and displacement.

[0021] In this invention, the addition of insulating tubes, along with gripping and rotating mechanisms, maintains a set distance between the anode ladder and cathode rod and the reinforcing cage, thereby improving the efficiency of insulation assembly, reducing the risk of insulation failure, ensuring electrical connection, and reducing the frequency of signal interference.

[0022] In this invention, the assembly is first performed at a preset position, and then the addition of an adjustment mechanism provides a basic measure for the angle adjustment and precise positioning of the anode ladder, as well as the subsequent installation and adjustment of the cathode rod. Attached Figure Description

[0023] Figure 1 A schematic diagram of the installation device for a corrosion monitoring system in a port barrel foundation structure provided by this utility model;

[0024] In the picture:

[0025] 1. Protective sleeve; 2. Connecting steel bar; 3. Clamping mechanism one; 31. Insulating tube three; 32. Connecting tube; 33. Arc claw; 4. Anode ladder; 6. Cathode rod; 7. Insulating tube one; 8. Insulating tube two; 9. Clamping mechanism two; 10. Clamping mechanism three; 11. Clamping mechanism four. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0027] See attached document Figure 1 As shown, the installation device for the corrosion monitoring system in the port barrel foundation structure in this embodiment includes a barrel foundation structure composed of a steel cage, a connecting steel bar 2 fixed to at least two steel bars on the steel cage, an anode ladder 4 clamped and fixed by a clamping mechanism 3, and a cathode rod 6 working in cooperation with it. The cathode rod 6 is connected to the connecting steel bar 2 and the anode ladder 4 through insulating tubes 7 and 8 on both sides. The cathode rod 6 and the anode ladder 4 are pre-fixed in a preset position through the first end of the insulating tube 7 and the two ends of the insulating tube 8, so that the position can be fixed in advance and then adjusted accordingly in the future.

[0028] The anode ladder 4 in this embodiment is a conventional technology, specifically a sensor system. This sensor system employs the principle of embedded macrocells, reflecting the corrosion state of the reinforcing steel by monitoring the critical chloride content penetration depth. The system can continuously measure the corrosion process of the reinforcing steel, enabling port operation and maintenance units to take timely preventive protective measures before visible damage such as cracking and spalling occurs in the concrete.

[0029] To secure the connecting reinforcing bar 2 and ensure the connection of the reinforcing cage, the second end of the insulating tube 7 is provided with a clamping mechanism 9, which clamps and locks the connecting reinforcing bar 2. Furthermore, the connecting reinforcing bar is not simply tied, but rather clamped before being securely assembled. For example, a rotating sleeve is used to rotate the sleeve, and then an arc-shaped clamp is fixed to the side of the sleeve, which then holds the entire connecting reinforcing bar in place.

[0030] During assembly, the steel cage is formed into at least two layers, and the connecting steel bar 2 is located inside the outermost layer of steel bars in the steel cage. It is then fixedly connected to at least two main bars in the outermost layer of steel cage by welding or binding (i.e., fixed connection at at least two points).

[0031] For electrical connection, it also includes a riveted terminal that is riveted to the connecting steel bar 2, wherein the riveted joint is fitted with a heat shrink sleeve to prevent the risk of gap corrosion.

[0032] In this embodiment, the gripping mechanism 3 includes an insulating tube 31 sleeved on the connecting steel bar. The side of the insulating tube 31 is connected to an arc-shaped claw 33 through a connecting tube 32. The two ends of the arc-shaped claw 33 are provided with locking mechanisms facing the anode ladder.

[0033] In this embodiment, in the first gripping mechanism, the insulating tube 31 can rotate around the Y-axis at any angle and is clamped on the connecting steel bar 2, and is locked by the insulating bolt. On the right side of the first gripping mechanism 3, there is a connecting tube 32 made of plastic tube extending out, which is used to connect the end of the arc claw 33 made of arc gripper.

[0034] The locking mechanism is specifically designed to lock the anode ladder 4 by means of an arc-shaped claw 33 on the plastic tube extending from the right side, which can rotate around the x-axis and lock the anode ladder 4 by means of an insulating bolt.

[0035] Furthermore, a gripping mechanism 3 10 is formed on the side of the insulating tube 2 8 near the anode ladder 6. The gripping mechanism 3 10 is used to directly fix and lock the anode ladder 4 for overall fixation by insulating bolts.

[0036] Furthermore, the insulating tube 7 and the insulating tube 8 are provided with a gripping mechanism 4 11 near the cathode rod 6, thus forming two gripping mechanisms 11 with their openings facing each other, one gripping from the left and the other from the right, so that the cathode rod 6 is clamped.

[0037] In this embodiment, the gripping mechanism 411 is a horizontal plastic tube extending from the end of insulating tube 1 7 or insulating tube 2 8. The horizontal plastic tube can rotate in the horizontal direction and then be locked by insulating bolts to form a gripping clamp.

[0038] In this embodiment, the tilt angle of the anode ladder 4 can be controlled by rotating the connecting pipe 32 in the X-axis direction, and the clamping angle of the connecting steel bar 2 can be adjusted by rotating the insulating pipe 31 in the Y-axis direction, thereby controlling the angle between the anode ladder 2 and the steel cage. This adjustment of the X-axis and Y-axis can be called the adjustment mechanism, which facilitates the adjustment of the angle between the connecting steel bar 2 and the steel cage. This includes precisely controlling the thickness of the protective layer between the outermost steel bar of the anode ladder 4 and the concrete surface to be 10-15mm, that is, the distance between the anode ladder 4 and the concrete at the steel cage after pouring is 10-15mm.

[0039] To achieve insulation, both insulating tube 7 and insulating tube 8 are plastic tubes, which are connected by at least one segment. Both insulating tube 7 and insulating tube 8 are equipped with transmission cables for connecting the cathode rod 6 to the connecting steel bar 2 and the anode ladder 4.

[0040] In this embodiment, the two sections of the plastic tube are located in the water level fluctuation area and the splash area of ​​the tank, respectively, and the anode ladder 4 and the cathode rod 6 are located in the water level fluctuation area and the splash area of ​​the tank, respectively.

[0041] In this embodiment, a hinge is provided at the connection between the two plastic tubes, so that each plastic tube can rotate along the X-axis and be fixed and locked by adding bolts, etc., to ensure that the cathode rod 6 can be offset from the outer layer of steel bars of the steel cage by a certain distance, so as to achieve no electrical connection with the steel bars of the steel cage.

[0042] In this embodiment, a protective sleeve 12 is also provided on the exposed part of the cathode rod 6 for protection.

[0043] In this embodiment, the structure of the corrosion detection system specifically used in the port barrel foundation structure is described as follows:

[0044] First, the anode ladder 4 typically comprises six trapezoidal elements, including a temperature sensor serving as the primary monitoring sensor. A standard anode ladder is generally sufficient. These trapezoidal elements are then fixed to the reinforcing steel using adjustable stainless steel fixing strips (usually coated with insulating black rubber). Each anode strip has its ends connected to measuring leads. This allows for short-circuit measurements to check the cable and its connections. In this embodiment, heat-shrink tubing is also used at both ends of each anode strip where it connects to the cable to prevent crevice corrosion.

[0045] In this embodiment, the distance between the anode bars and the outer reinforcing bars in the anode ladder system is precisely adjusted mainly by the gripping mechanism 3 and the arc-shaped claw 33. After adjustment, the adjustable stainless steel fixing bar (coated with insulating black rubber) of the anode ladder can be fixed to the outer reinforcing bars, thereby making the installation position more accurate and the installation more secure.

[0046] In this embodiment, the measuring leads are housed within stainless steel retaining bars on both sides. After the anode bars are connected to the leads and an electrical contact check is performed, the stainless steel retaining bars are filled with transparent epoxy resin to protect the leads and temperature sensor from mechanical and chemical corrosion. A PT 1000 temperature sensor is installed within one of the stainless steel retaining bars. The accuracy and long-term stability requirements of the PT 1000 sensor meet DIN IEC 751 standards.

[0047] The cables in the anode ladder in this embodiment mainly include two rows of six Li TCT 60.24 mm² cables leading out from the side of the anode bars and one row of two Li TCT 20.24 mm² cables leading out from the temperature sensor.

[0048] In this embodiment, during the anode ladder assembly, the cable is covered with highly durable polytetrafluoroethylene (PTFE), a plastic insulating material. One end of the cable is threaded through a stainless steel retaining strip and filled with epoxy resin, while the other end is connected to a junction box (or junction box), preventing water from entering the cable. The cable length is adjusted according to the distance between the sensor element and the junction box or junction box.

[0049] In this embodiment, the anode ladder is generally installed in a location on the concrete structure that is prone to corrosion; this location is also called the monitoring point. The concrete protective layer of the outermost anode rod A1 should not be less than 10-15 mm, with 15 mm being optimal. The innermost anode A6 should be as close as possible to the outermost reinforcing steel bars of the steel cage.

[0050] Secondly, the cathode rod is specifically a 40 cm long, 8 mm diameter platinum oxide coated titanium rod, which serves as the counter electrode for electrical measurements between the anode ladder and the connecting steel bars. The cable used is a standard cable.

[0051] Next, regarding connecting steel bar 2.

[0052] In this embodiment, the connecting steel bar 2 will be used to measure the corrosion behavior of the steel bars. Furthermore, if some of the steel bars around the cathode are depassivated, the connecting steel bar 2 can be used to measure corrosion activity (i.e., to measure the current and potential between the connecting steel bar and the cathode). In this embodiment, the connecting steel bar 2 is fixed to the two main steel bars of the steel cage by welding or binding. To achieve electrical connection, the connecting steel bar is connected by welding and riveting terminals. To prevent corrosion at the riveting points, heat-shrink tubing is used for protection at the connection.

[0053] During assembly, to ensure proper measurement, the cathode rod in this embodiment must be installed near a concrete surface with sufficient oxygen supply. If the concrete at the anode ladder is water-saturated for an extended period, such as in underwater structures or areas with fluctuating water levels, the cathode bar must be installed near another unsaturated concrete surface. The distance between the anode ladder 4 and the cathode bar should be as small as possible, typically not exceeding 1 meter. If a greater distance must be maintained, two cathodes can be installed near a dry concrete surface, where sufficient oxygen should be supplied to the cathode bar surface, for specialized testing of the anode ladder system's proper functioning under the aforementioned conditions.

[0054] Finally, for other components, including the cables used for connections between sensors and junction boxes, and the junction boxes for cable routing structures used for anode ladder monitoring.

[0055] In this embodiment, to minimize the amount of cable, the junction box should be installed as close as possible to components such as sensors. The junction box is equipped with a measuring plug; it can only be inserted into the corresponding socket when correctly positioned, thus preventing incorrect connections. The junction box has drilled holes at the top to allow the plug with cable to pass through. The plug is then inserted into the socket inside the junction box, and the drilled hole is sealed with a threaded aluminum ring.

[0056] The first step is to weld and fix the connecting steel bar 2 to the inner side of the outer layer of steel bars in the steel cage.

[0057] The second step is to clamp the gripping mechanism 3 at a certain angle onto the connecting steel bar 2 and fix it with insulating bolts. This angle should ensure that the innermost anode bar of the subsequently connected anode ladder 4 does not come into electrical contact with the cage steel bar.

[0058] The third step is to use the arc-shaped clamp 33 to hold and fix the anode ladder 4.

[0059] Fourth step, attach the plastic tube on the left side of the arc-shaped clamp 33 to the plastic sleeve (i.e., connecting tube 32) on the right side of the gripping mechanism 3, rotate the attachment part to tilt the anode ladder 4 at a certain angle, ensuring the outermost anode strip has a 15mm protective layer thickness. After adjustment, fix the attachment part with bolts. Finally, tie and fix the adjustable stainless steel fixing rod (coated with insulating black rubber) that comes with the anode ladder to the outer layer of steel bars in the steel cage.

[0060] Fifth step: clamp and fix insulating tube 7 and insulating tube 8 to connecting steel bar 2 and anode ladder 4 respectively by clamping mechanism 2 9 and clamping mechanism 3 10, and thread the cables of connecting steel bar 2 and anode ladder 4 into insulating tube 7 and insulating tube 8 respectively.

[0061] Step 6: After the upper splash zone's cast-in-place breast wall base slab reinforcement cage is erected, before the breast cavity base slab is cast, hinge the second sections of insulating tube one and insulating tube two at the connection interface between the top of the bucket and the breast cavity base slab, respectively. Sleeve the plastic tubes on both sides of the clamping mechanism four onto one end of insulating tube one and insulating tube two, respectively. Rotate the connection point to clamp the cathode rod from both sides and fix it with insulating bolts. Finally, rotate the hinge connection point of insulating tube one and insulating tube two at the same time to keep the cathode rod at a certain distance from the outer layer of reinforcement of the breast wall base slab reinforcement cage to prevent electrical contact. Finally, fix the hinge point with bolts to ensure that it no longer rotates.

[0062] Step 7: Pass the cables connecting the reinforcing bars 2 and the anode ladder 4 through the holes above the insulating tube 7 and the insulating tube 8 respectively, and merge them with the cathode rod 6 cable. Lay them upward along the breast wall reinforcing cage, fixing them with no less than two plastic tapes per meter, and finally connect them to the junction box.

[0063] In the monitoring and measurement process, the principle of this utility model is as follows: the junction box enables the anode ladder 4, cathode rod 6 and connecting steel bar 2 to be energized, and then the current and potential between the connecting steel bar 2 and cathode rod 6 are measured through the anode ladder 4 to determine whether corrosion has occurred, and the data and results are output.

[0064] In this embodiment, the corrosion monitoring system on a barrel foundation structure in a harbor environment, for example, is stabilized through the above-described installation steps and installation device. The barrel foundation structure is generally formed by reinforcing cages and poured concrete.

[0065] The installation device in this embodiment, through modular design and rigid fixing scheme, solves the technical bottleneck of traditional installation methods and provides high-precision and high-reliability implementation guarantee for corrosion monitoring of port barrel foundation structures.

[0066] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

[0067] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0068] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An installation device for a corrosion monitoring system in a port barrel foundation structure, characterized in that, The structure includes a barrel-shaped foundation made of a steel cage, and connecting steel bars that are fixed to at least two steel bars on the steel cage. The connecting steel bars are clamped and fixed to an anode ladder assembled on the steel cage by a gripping mechanism. The cathode rod is connected to the connecting steel bar and the anode ladder on both sides by insulating tube one and insulating tube two, respectively. The cathode rod and the anode ladder are pre-fixed in a preset position through the first end of insulating tube one and the two ends of insulating tube two.

2. The installation device for a corrosion monitoring system in a port barrel foundation structure according to claim 1, characterized in that, The second end of the insulating tube is provided with a gripping mechanism, which clamps and locks the connecting steel bar.

3. The installation device for a corrosion monitoring system in a port barrel foundation structure according to claim 1, characterized in that, The steel cage forms at least two layers, with the connecting steel bars located inside the outermost steel cage and fixedly connected to at least two points in the outermost steel cage.

4. The installation device for a corrosion monitoring system in a port barrel foundation structure according to claim 1, characterized in that, It also includes a riveting terminal that is riveted to the connecting steel bar, wherein a heat shrink sleeve is fitted at the riveting point.

5. The installation device for a corrosion monitoring system in a port barrel foundation structure according to claim 4, characterized in that, The gripping mechanism includes an insulating tube three sleeved on the connecting steel bar. The side of the insulating tube three is rotatably connected to an arc-shaped claw through a connecting tube. The two ends of the arc-shaped claw are provided with a locking mechanism facing the anode ladder.

6. The installation device for a corrosion monitoring system in a port barrel foundation structure according to claim 1, characterized in that, The insulating tube two forms a gripping mechanism three on the side near the anode ladder, and the gripping mechanism three locks the anode ladder by insulating bolts.

7. The installation device for a corrosion monitoring system in a port barrel foundation structure according to claim 1, characterized in that, The insulating tubes one and two are equipped with a gripping mechanism four that grips the cathode rod near the cathode rod.

8. The installation device for a corrosion monitoring system in a port barrel foundation structure according to claim 1, characterized in that, The distance between the anode ladder and the concrete at the reinforced cage after pouring is 10-15mm.

9. The installation device for a corrosion monitoring system in a port barrel foundation structure according to claim 1, characterized in that, Both insulating tube one and insulating tube two are plastic tubes, and each plastic tube is formed by connecting at least two sections. Both insulating tube one and insulating tube two are respectively provided with transmission cables for connecting the cathode rod to the connecting steel bar and the anode ladder.

10. The installation device for a corrosion monitoring system in a port barrel foundation structure according to claim 9, characterized in that, The two ends of the plastic tube are located in the water level fluctuation area and the splash area of ​​the tank, respectively, and the anode ladder and the cathode rod are located in the water level fluctuation area and the splash area of ​​the tank, respectively.

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