Identification PCCP (Prestressed Concrete Cylinder Pipe)
By embedding an integrated molded concrete chip into the PCCP pipe, the difficulties in PCCP pipe identification management in the existing technology are solved, realizing efficient information entry and traceability management, and improving management efficiency and quality control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN UNIV OF TECH
- Filing Date
- 2025-07-29
- Publication Date
- 2026-05-26
AI Technical Summary
The existing PCCP pipe labeling management suffers from problems such as labeling errors, confusion, unclear information, and loss. In addition, manual management is inefficient, costly, and lacks simple and efficient management methods.
An integrated concrete chip is embedded in the PCCP pipe. It is attached to the inner wall of the steel cylinder or buried in the concrete layer of the inner wall of the pipe core by fixing material, so as to realize efficient information input and reading, including radio frequency components to facilitate traceability management.
It improves the efficiency of PCCP pipe identification and traceability management, significantly enhances pipe identification and management level, simplifies information entry process, and reduces labor costs.
Smart Images
Figure CN224287522U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of precast concrete technology, and in particular to a PCCP pipe with marking function. Background Technology
[0002] PCCP pipe is a high-performance composite pipe mainly used in large-scale water conveyance projects. It features high strength, good impermeability, and high durability. As a large prefabricated component, PCCP pipe undergoes processes such as steel cylinder rolling, inner and outer concrete lining pouring, prestressed steel wire winding, sprayed mortar protective layer, curing, and inspection in the factory before being transported to the project site for assembly. This improves construction efficiency and quality, reduces the consumption of natural resources, and is widely used in long-distance, high-pressure, high-corrosion, and complex terrain water conveyance environments. It has become the preferred pipe material for water diversion projects, municipal water supply, and industrial water conveyance projects, playing a very important role.
[0003] The widespread use of PCCP pipes has led to management challenges. Currently, some companies use methods such as painting or affixing QR codes for pipe identification, tracking, and traceability. However, problems persist, including incorrect or confused labeling, unclear or lost information, and low manual efficiency, resulting in significant costs. To date, no simple and efficient management method has been found to solve the pain points of PCCP pipe management. Utility Model Content
[0004] The purpose of this invention is to provide an identification PCCP pipe to solve the problems existing in the prior art. The PCCP pipe has an integrated molded concrete chip built in, which facilitates identification and traceability management.
[0005] To achieve the above objectives, this utility model provides the following solution:
[0006] This utility model provides a PCCP pipe identification, including a PCCP pipe frame and an integrally formed concrete chip disposed on the PCCP pipe frame;
[0007] The PCCP pipe frame includes a circumferential steel cylinder, a core outer wall concrete layer wrapped around the circumferential steel cylinder, prestressed steel wires wrapped around the core outer wall concrete layer, a mortar protective layer wrapped around the prestressed steel wires, and a core inner wall concrete layer disposed inside the circumferential steel cylinder.
[0008] The integrally molded concrete chip is disposed on the surrounding steel cylinder at the socket end of the PCCP pipe frame and / or on the inner wall concrete layer of the pipe core.
[0009] Preferably, the integrally molded concrete chip is attached and fixed to the surrounding steel cylinder by a fixing material.
[0010] Preferably, the integrally molded concrete chip can be fixed within the concrete layer on the inner wall of the core as the concrete hardens.
[0011] Preferably, the curvature of the integrally molded concrete chip is consistent with the curvature of the surrounding steel cylinder; the fixing material is AB glue and / or instant adhesive and / or iron wire and / or clips.
[0012] Preferably, the PCCP pipe frame is of model Φ600, Φ800, Φ1200, Φ2000, Φ3000, or Φ4000.
[0013] Preferably, the integrally molded concrete chip includes a carbon mineralized casting body and a radio frequency component located within the carbon mineralized casting body.
[0014] Preferably, the radio frequency component includes a radio frequency chip and a radio frequency antenna connected to the radio frequency chip.
[0015] Preferably, it also includes an external signal acquisition unit, which is connected to the radio frequency antenna.
[0016] Preferably, the steel cylinder is made of ordinary carbon structural steel or low alloy structural steel; the prestressed steel wire is made of high carbon steel wire.
[0017] The present invention achieves the following technical advantages over the prior art:
[0018] This invention relates to a PCCP pipe with an integrated molded concrete chip fixed at different positions on the pipe's inlet. When data entry is required starting from the steel cylinder processing stage, the integrated molded concrete chip conforms to the steel cylinder's curvature and is fixed to the inner wall, enabling complete data entry for the entire steel cylinder processing process and subsequent steps. When only information after the PCCP pipe is formed needs to be entered, the integrated molded concrete chip can be embedded in the inner concrete layer of the pipe core. The integrated molded concrete chip is easy and efficient to install, has a long reading distance, and ultimately achieves the goal of efficiently reading and identifying the integrated molded concrete chip from the inside of the finished pipe, improving pipe identification and management efficiency. This invention is simple in principle, effective, and applicable to PCCP pipes with different data entry needs. It also provides identification and traceability for PCCP pipes, significantly improving the quality management level of concrete products or structures. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of the PCCP tube provided in Embodiment 1 of this utility model;
[0021] Figure 2 This is a schematic diagram of the structure of the PCCP tube provided in Embodiment 2 of this utility model;
[0022] Figure 3 This is a schematic diagram of the structure of the PCCP tube provided in Embodiment 3 of this utility model;
[0023] Figure 4 This is a schematic diagram of the structure of the PCCP tube provided in Embodiment 4 of this utility model;
[0024] In the diagram: 1. PCCP pipe frame; 2. One-piece molded concrete core; 1-1. Steel cylinder; 1-2. Concrete layer on the outer wall of the core; 1-3. Prestressed steel wire; 1-4. Mortar protective layer; 1-5. Concrete layer on the inner wall of the core. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] The purpose of this invention is to provide a marking tool for PCCP pipes to solve the problems existing in the prior art.
[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0028] In this embodiment, the PCCP tube is identified as follows: Figures 1-4 As shown, it includes a PCCP pipe frame 1 and an integrally formed concrete chip 2 disposed on the PCCP pipe frame 1;
[0029] PCCP pipe frame 1 includes a steel cylinder 1-1, a core outer wall concrete layer 1-2 wrapped around the steel cylinder 1-1, a prestressed steel wire 1-3 wrapped around the core outer wall concrete layer 1-2, a mortar protective layer 1-4 wrapped around the prestressed steel wire 1-3, and a core inner wall concrete layer 1-5 set inside the steel cylinder 1-1.
[0030] The integrally molded concrete chip 2 is set on the steel cylinder 1-1 around the socket end of the PCCP pipe frame 1 and / or on the concrete layer 1-5 on the inner wall of the pipe core.
[0031] In this specific embodiment, the integrally molded concrete chip 2 is fixed to the surrounding steel cylinder 1-1 by a fixing material, and the curvature of the integrally molded concrete chip 2 is consistent with the curvature of the surrounding steel cylinder 1-1. Specifically, a mold is customized according to the curvature of the steel cylinder, and a concrete chip with the same curvature as the steel cylinder is cast by casting to improve the fixing strength and stability. The fixing material is one or more of AB glue, instant adhesive, iron wire, and clips.
[0032] In this specific embodiment, the integrally molded concrete chip 2 can be fixed within the inner wall concrete layer 1-5 of the core as the concrete hardens. Concrete hardening and fixing means that after pouring and compacting the concrete, the integrally molded concrete chip 2 is pressed into the concrete to an appropriate depth and fixed as the concrete hardens. More preferably, it is embedded to a depth of 1 cm inside the inner wall concrete layer 1-5 of the core.
[0033] In this specific embodiment, the PCCP pipe frame 1 is preferably Φ600, Φ800, Φ1200, Φ2000, Φ3000, or Φ4000, and more preferably Φ3000.
[0034] In this specific embodiment, the material of the steel cylinder 1-1 is preferably ordinary carbon structural steel or low alloy structural steel, more preferably ordinary carbon structural steel; the prestressed steel wire 1-3 is high carbon steel wire.
[0035] In this specific embodiment, the cement used for the outer wall concrete layer 1-2, the inner wall concrete layer 1-5, and the mortar protective layer 1-4 includes one or more of the following: silicate cement (P·Ⅰ, P·Ⅱ), ordinary silicate cement (P·O), slag silicate cement (P·S), pozzolanic silicate cement (P·P), fly ash silicate cement (P·F), and composite silicate cement (P·C), more preferably ordinary silicate cement (P·O).
[0036] In this specific embodiment, the integrally molded concrete chip 2 includes a carbon mineralization casting body and a radio frequency component located within the carbon mineralization casting body. The carbon mineralization casting body is composed of carbon mineralization material, carbonization aid, crack-resistant aid, defoaming aid and water. After being mixed evenly, it has a certain fluidity and can be cast into an integrally molded concrete chip 2 that fits the steel cylinder according to the curvature of the steel cylinder. The radio frequency component preferably includes a radio frequency chip and a radio frequency antenna connected to the radio frequency chip.
[0037] In this specific embodiment, it also includes: an external signal acquisition device.
[0038] In this embodiment, the operation of the radio frequency (RF) component is preferably as follows: the RF chip is connected to the RF antenna, and under the excitation of an external signal acquisition device, the information inside the RF chip is transmitted by the RF antenna and received by the signal acquisition device; the operating frequency of the signal acquisition device preferably includes a low frequency of 30–300 kHz, a high frequency of 3–30 MHz, and an ultra-high frequency of 433–950 MHz, more preferably an ultra-high frequency of 433–950 MHz. In this invention, both the RF chip and the RF antenna are commercially available products.
[0039] In this embodiment, the method for preparing the integrally molded concrete chip 2 preferably includes the following steps:
[0040] Carbon mineralization materials, carbonization aids, crack-resistant aids, defoaming aids, and water are mixed evenly in a certain proportion to form a slurry with a certain fluidity. A mold with the same curvature as the steel cylinder is selected, and the slurry is introduced into the mold. Then, the radio frequency component is placed horizontally in the middle of the slurry. The cast sample is dried with the mold to a specific moisture content, and then mineralized in a carbon dioxide atmosphere to obtain an integrally molded concrete chip 2.
[0041] In this embodiment, the specific moisture content of the sample is 10% to 20%, more preferably 15%.
[0042] In this embodiment, the mineralization temperature is preferably 5–90°C, more preferably 20–40°C; the mineralization time is preferably 12–48 h, more preferably 24–48 h; the partial pressure of carbon dioxide in the mineralization carbon dioxide atmosphere is preferably 0.1–0.3 MPa, more preferably 0.2–0.3 MPa, and the volume concentration is preferably 20–99.9%, more preferably 50–99.9%; the relative humidity of the carbon dioxide atmosphere is preferably 50%.
[0043] In this embodiment, the fabrication method of the PCCP tube frame 1 preferably includes the following steps:
[0044] The integrally molded concrete chip 2 is fixed on the PCCP pipe frame 1. After processes such as steel cylinder rolling, concrete pouring of the inner and outer walls of the pipe core, winding of prestressed steel wire 1-3, spraying of mortar protective layer 1-4, curing and inspection, the PCCP pipe frame 1 is obtained.
[0045] Unless otherwise specified, this embodiment does not have special requirements for the source of raw materials used, and commercially available products well known to those skilled in the art can be used.
[0046] This invention does not impose any special limitations on maintenance; maintenance methods well known in the art can be used.
[0047] In this embodiment, depending on the different data entry requirements, a suitable installation position for the integrally molded concrete chip 2 is selected during the production of the PCCP pipe frame 1. For example, when data needs to be entered from the beginning of steel cylinder processing, the integrally molded concrete chip 2 can conform to the curvature of the steel cylinder and be fixed to the inner wall of the steel cylinder, enabling complete information entry for the steel cylinder processing process and subsequent processes. When only information after the PCCP pipe is formed needs to be entered, the integrally molded concrete chip 2 can be embedded in the concrete layer 1-5 on the inner wall of the core at the spigot end. The integrally molded concrete chip 2 is easy and efficient to install and has a long reading distance, ultimately achieving the goal of efficiently reading and identifying the integrally molded concrete chip 2 inside the finished pipe, thereby improving the efficiency of pipe identification and management.
[0048] The PCCP tube 1 provided in this embodiment facilitates identification management and quality traceability. The PCCP tube 1 with a built-in integrated molded concrete chip 2 provided in this embodiment can meet different data entry needs. This embodiment proposes fixing the integrated molded concrete chip 2 at different positions on the insertion end of the PCCP tube frame 1. When data entry is required starting from the steel cylinder processing, the integrated molded concrete chip 2 can conform to the curvature of the steel cylinder and be fixed to the inner wall of the steel cylinder, enabling complete information entry for the steel cylinder processing process and subsequent processes. When only information after PCCP molding needs to be entered, the integrated molded concrete chip 2 can be embedded in the concrete layer 1-5 of the inner wall of the tube core. The integrated molded concrete chip 2 is easy and efficient to install, and has a long reading distance. This embodiment has a simple principle and obvious effects, effectively meeting the different data entry needs of the PCCP tube frame 1, while simultaneously identifying and tracing it, significantly improving the intelligent and information-based management level of the PCCP tube frame 1.
[0049] This embodiment can be specifically divided into the following embodiments:
[0050] Example 1
[0051] like Figure 1 As shown, the PCCP pipe includes a PCCP pipe frame 1. The PCCP pipe frame 1 includes a steel cylinder 1-1, a core outer wall concrete layer 1-2 surrounding the steel cylinder 1-1, prestressed steel wires 1-3 wrapped around the core outer wall concrete layer 1-2, a mortar protective layer 1-4 surrounding the prestressed steel wires 1-3, and a core inner wall concrete layer 1-5 inside the steel cylinder 1-1. The PCCP pipe frame 1 is Φ3000. The steel cylinder 1-1 is made of ordinary carbon structural steel. The cement used for the core outer wall concrete layer 1-2, the core inner wall concrete layer 1-5, and the mortar protective layer 1-4 is ordinary Portland cement.
[0052] The integrally molded concrete chip 2 is fixed 1 cm below the concrete layer 1-5 on the inner wall of the core of the insertion end tube. It includes a carbon mineralization casting body and a radio frequency component (including a radio frequency chip and a radio frequency antenna connected to the radio frequency chip) located in the carbon mineralization casting body. The radio frequency chip is connected to the radio frequency antenna. Under the excitation of an external signal acquisition device, the information inside the radio frequency chip is transmitted by the radio frequency antenna and received by the signal acquisition device. The operating frequency of the signal acquisition device is 433-950MHz ultra-high frequency. The preparation method of the integrally molded concrete chip 2 is as follows: carbon mineralization material, carbonization aid, crack-resistant aid, defoaming aid and water are mixed evenly in a certain proportion to make a slurry with a certain fluidity. A mold with the same curvature as the steel cylinder is selected, the slurry is introduced into the mold, and then the radio frequency component is placed horizontally in the middle of the slurry. The cast sample was dried with the mold to a moisture content of 15%, and then mineralized in a carbon dioxide atmosphere at a temperature of 25°C for 24 hours. The partial pressure of carbon dioxide in the mineralization atmosphere was 0.3 MPa, the volume concentration was 99.9%, and the relative humidity was 50%.
[0053] After the concrete for the PCCP pipe is poured and compacted, the aforementioned integrally molded concrete chip 2 is pressed into the concrete. As the concrete hardens, it is fixed to a depth of 1cm below the inner wall of the PCCP pipe frame 1, which is then cured to obtain the PCCP pipe.
[0054] Example 2
[0055] The only difference from Example 1 is that the integrally molded concrete chip 2 is pressed into the concrete and, as the concrete hardens, is fixed to a depth of 2cm below the inner wall concrete layer 1-5 of the core at the insertion end of the PCCP pipe frame 1 (e.g., ...). Figure 2 As shown in the figure, the rest of the content is the same as in Example 1.
[0056] Example 3
[0057] The only difference from Example 1 is that the integrally molded concrete chip 2 is pressed into the concrete and, as the concrete hardens, is fixed to a depth of 3cm below the inner wall concrete layer 1-5 of the core at the insertion end of the PCCP pipe frame 1 (e.g., ...). Figure 3 As shown in the figure, the rest of the content is the same as in Example 1.
[0058] Example 4
[0059] The only difference from Example 1 is that the integrally molded concrete chip 2 is pre-fixed to the steel cylinder 1-1 around the insertion end using AB instant adhesive in the steel cylinder processing section (e.g., Figure 4 As shown in the figure, the rest of the content is the same as in Example 1.
[0060] Comparative Example 1
[0061] An integrally molded concrete chip 2 was prepared using ordinary silicate cement and radio frequency (RF) components. The preparation method for the integrally molded concrete chip 2 was as follows: ordinary silicate cement was mixed with water to obtain a mixture. This mixture was filled into a mold with a curvature consistent with that of a steel cylinder. The RF components were then placed horizontally in the center of the mixture, and more mixture was added until the cylinder was full. The mixture containing the RF components was then cured in a standard curing room at 25°C and 90% relative humidity for 28 days to obtain the integrally molded concrete chip 2 prepared using ordinary silicate cement. The integrally molded concrete chip 2 was then fixed to the inner wall of the PCCP pipe frame 1 at a depth 1 cm below the concrete layer 1-5 on the core side as the concrete hardened.
[0062] Comparative Example 2
[0063] The only difference from Comparative Example 1 is that the integrally molded concrete chip 2 is fixed to the steel cylinder 1-1 around the insertion end using AB instant adhesive (e.g., Figure 4 As shown in the figure, the rest of the content is the same as in Example 1.
[0064] Performance testing
[0065] The integrally formed concrete chip in the PCCP tube prepared in each embodiment and comparative example was read using a signal acquisition device. The operating frequency of the signal acquisition device was 433-950MHz ultra-high frequency. The maximum reading distance of the signal acquisition device was recorded. The results are shown in Table 1.
[0066] Table 1. Results of maximum reading distance of the integrated concrete chip under different installation methods in each embodiment and comparative example.
[0067]
[0068] As shown in Table 1, the survival rate of the integrally molded concrete chips in each embodiment and the comparative example is 100%.
[0069] The reading distances of the integrally molded concrete chips prepared in each embodiment are significantly greater than those in Comparative Examples 1 and 2. This is because Comparative Examples 1 and 2 use cement to encapsulate the RF chip. Cement hydration produces various hydration products, and the RF signal undergoes multipath effect during transmission, with reflections occurring at the interfaces of these products, increasing the transmission path. Furthermore, concrete materials, similar in composition to cement, also impede signal transmission. This dual impediment from cement and concrete materials results in shorter signal reading distances in Comparative Examples 1 and 2. In contrast, this invention utilizes the products generated by the mineralization reaction of carbonaceous materials—calcium carbonate and silica gel. On one hand, the carbonized products have extremely low electrical conductivity (within 10...). -8The material has a low dielectric constant (on the order of magnitude) and low permeability (almost non-magnetic), which means it has a lower electromagnetic loss tangent (tanδ), resulting in less transmission loss of radio frequency signals compared to cement. On the other hand, the material has a low dielectric constant of about 3, which allows it to form a more reasonable impedance match with concrete, enabling more signals to pass through the carbonized cast body shell and enter the concrete, thus allowing for a longer transmission distance.
[0070] Compared to the installation location on the steel cylinder in Example 4, Examples 1, 2, and 3 are installed on the inner concrete layer of the PCCP core. Metal materials typically have a high dielectric constant. When the integrally molded concrete chip is tightly attached to the steel cylinder, the metal generates strong electromagnetic coupling with the radio frequency signal, resulting in significant signal absorption and reflection, thus shortening the reading distance. Similarly, the greater distance in Comparative Example 1 compared to Comparative Example 2 is also due to the metal. The advantage of installation on the steel cylinder is that it can completely record all data after the steel cylinder processing steps, and it fits tightly to the curvature of the steel cylinder, providing a firm fixation and high reliability even during the compaction stage. The disadvantage is a slightly shorter reading distance. Examples 1, 2, and 3 are located in concrete at different depths, at a certain distance from the steel cylinder, and are less affected by the metal, thus exhibiting a greater reading distance. However, this installation method cannot record data before the concrete pouring process. In summary, fixing to the steel cylinder can record complete data and remains stable and secure, but the reading distance is somewhat affected. Fixing to the inner concrete layer of the core is simple, efficient, and has a greater reading distance, but the amount of data recorded is less. Therefore, the installation method should be flexibly selected according to the actual situation.
[0071] Examples 1, 2, and 3 all involve concrete hardening and fixation, differing only in the depth of the concrete layer embedded in the inner wall of the core: 1cm, 2cm, and 3cm, respectively. Comparing Examples 1, 2, and 3 reveals that the signal transmission distance decreases with increasing embedment depth. This is because concrete impedes signal transmission. Similar to cement, concrete typically has poor impedance matching with free space, causing a large amount of radio frequency (RF) signals to be reflected at the concrete interface and unable to reach free space. Cement hydration produces various hydration products, and concrete also contains sand, stone aggregates, etc. The multipath effect of these multiple phases increases the reflection path of RF signals, leading to greater loss. Water significantly impedes RF signals, and concrete typically has a high water content, further contributing to RF signal attenuation. These factors result in concrete material having a strong impeding effect on RF signals, which becomes more pronounced with increasing concrete layer thickness. Therefore, the reading distance of the integrally molded concrete chip in Examples 1, 2, and 3 gradually decreases.
[0072] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A type of PCCP tube for identification, characterized in that: Includes a PCCP pipe frame and an integrally molded concrete chip disposed on the PCCP pipe frame; The PCCP pipe frame includes a circumferential steel cylinder, a core outer wall concrete layer wrapped around the circumferential steel cylinder, prestressed steel wires wrapped around the core outer wall concrete layer, a mortar protective layer wrapped around the prestressed steel wires, and a core inner wall concrete layer disposed inside the circumferential steel cylinder. The integrally molded concrete chip is disposed on the surrounding steel cylinder at the socket end of the PCCP pipe frame and / or on the inner wall concrete layer of the pipe core.
2. The PCCP marking tube according to claim 1, characterized in that: The integrally molded concrete chip is attached and fixed to the surrounding steel cylinder by a fixing material.
3. The PCCP marking tube according to claim 1, characterized in that: The integrally molded concrete chip can be fixed within the concrete layer on the inner wall of the tube core as the concrete hardens.
4. The PCCP marking tube according to claim 2, characterized in that: The curvature of the integrally molded concrete chip is consistent with the curvature of the surrounding steel cylinder; the fixing material is AB glue and / or instant adhesive and / or iron wire and / or clips.
5. The PCCP marking tube according to claim 1, characterized in that: The PCCP pipe frame is available in sizes Φ600, Φ800, Φ1200, Φ2000, Φ3000, and Φ4000.
6. The PCCP marking tube according to claim 1, characterized in that: The integrally molded concrete chip includes a carbonized cast body and a radio frequency component located within the carbonized cast body.
7. The PCCP marking tube according to claim 6, characterized in that: The radio frequency component includes a radio frequency chip and a radio frequency antenna connected to the radio frequency chip.
8. The PCCP marking tube according to claim 1, characterized in that: It also includes an external signal acquisition unit, which is connected to a radio frequency antenna.
9. The PCCP marking tube according to claim 1, characterized in that: The surrounding steel cylinder is made of ordinary carbon structural steel or low alloy structural steel; the prestressed steel wire is made of high carbon steel wire.