Closed heat supply pipe network system
The closed-loop heating network system, which utilizes high-temperature resistant composite materials and a self-healing coating, solves the problems of complex construction and difficult maintenance of traditional heating networks, thereby improving the system's stability and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JILIN JIHUA HUAQIANG CONSTR
- Filing Date
- 2024-12-25
- Publication Date
- 2026-05-05
AI Technical Summary
Traditional heating pipe networks suffer from problems such as complex construction, design discrepancies, long material supply cycles, high construction schedule pressure, complex maintenance, and insufficient insulation layer repair capabilities during construction and maintenance, resulting in high construction costs, system instability, and poor safety.
The thermal pipeline is made of high-temperature resistant composite material, with an added self-healing coating and monitoring system. The coating automatically repairs cracks through microcapsule-encapsulated repair fluid, and the monitoring system adjusts the flow and pressure in real time to ensure system stability and safety.
It improves the stability and durability of the pipeline network, reduces maintenance frequency and costs, enhances the protection of critical components, and ensures the safe operation of the system.
Smart Images
Figure CN224201351U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat pipe network technology, specifically a closed heat pipe network system. Background Technology
[0002] In the oil refining and chemical industry, with the advancement of industrialization, the upgrading and transformation of refining processes have become crucial for improving energy efficiency, reducing environmental pollution, and enhancing production stability. Particularly in oil refining and chemical transformation and upgrading projects, the ability to quickly and effectively modify and optimize pipeline systems while ensuring production safety is a core element of project success. Construction in existing pipeline corridors within the original plant area presents numerous complex technical and management challenges.
[0003] Traditional heating network and process piping installation technologies have many drawbacks, such as: complex project sites, tight construction schedules, and high construction risks; frequent adjustments to drawings are required during the design and construction of piping systems, especially during upgrades to process piping, leading to significant changes that can result in discrepancies between the design and the actual construction site, wasting time and money. Furthermore, long material supply cycles, limited work areas, and heavy workloads often put construction teams under pressure to manage both material costs and project schedule.
[0004] In the design and construction of pipeline systems, improving system reliability and long-term stability while reducing maintenance costs and downtime risks are urgent problems to be solved. Traditional pipeline insulation and protective coating technologies can reduce heat loss to some extent, but their ability to repair cracks or damage is insufficient, often requiring regular manual inspection and repair, increasing the complexity of operation and maintenance.
[0005] In view of this, we will study and improve the existing problems and provide a closed-loop heating network system to solve the current problems. The aim is to solve the problems and improve the practical value through this technology. Utility Model Content
[0006] This invention provides a closed-loop heating network system, aiming to improve the stability, durability, and safety of the network through innovative self-healing coating technology. Specifically, the system includes main components such as heating pipes, pipe insulation layers, a self-healing coating applied to the pipe surface, heat transfer devices, and a monitoring system.
[0007] The heating pipelines are made of high-temperature and corrosion-resistant composite materials, ensuring long-term operation in high-temperature and harsh environments. The pipeline's structural design has been optimized to effectively withstand the heat and pressure changes generated during pipeline operation.
[0008] The outer surface of the heating pipes is covered with a layer of high-efficiency insulation material to effectively reduce heat loss and ensure efficient heat transfer. The insulation layer is 20mm to 50mm thick, providing long-lasting thermal insulation and effectively reducing environmental heat loss.
[0009] The self-healing coating is an innovative material based on microcapsule technology. The coating is uniformly applied to the outer surface of thermal pipelines via spraying or brushing. The high-performance polymer repair fluid contained within the microcapsules automatically releases and fills the cracks when microcracks occur in the pipeline, thereby repairing the cracks and restoring the integrity of the pipeline surface. Specifically, the microcapsules employ a high-temperature, water-soluble vesicle structure. When microcracks occur in the pipeline, they melt and rupture due to the release of steam, releasing the repair fluid and filling the crack, ensuring that the pipeline surface does not leak due to crack propagation. The coating thickness ranges from 0.5 to 2 mm, effectively repairing cracks in their early stages, reducing pipeline maintenance frequency and replacement costs.
[0010] The heat transfer device is installed at one end of the pipeline. Its main function is to transfer heat and regulate the temperature and pressure of the fluid to ensure the stability of the system operation. This device can work in conjunction with other pipeline components to effectively control and regulate the thermal flow in the pipeline network.
[0011] The monitoring system is installed at welded joints and bends in the pipeline network, enabling real-time monitoring of pipeline temperature, pressure, and leakage status. The system controls the thermal flow within the pipeline through regulating valves and dynamically adjusts the flow and pressure based on data feedback from the monitoring system via an intelligent control module, thereby ensuring the safety and efficiency of the pipeline network during operation.
[0012] The beneficial effects achieved by this utility model are as follows:
[0013] 1. In this utility model, by coating the outer surface of the thermal pipeline with a self-healing coating, and utilizing the automatic bursting and repair function of the microcapsule, when a microcrack occurs in the pipeline, the overflowing steam causes the microcapsule to break and promptly release its contents to fill and repair the crack in the pipeline, thereby reducing the risk of pipeline leakage and improving the long-term stability and durability of the system.
[0014] 2. In this utility model, by covering the welded joints, elbows and monitoring system installation points of the thermal pipeline with a self-healing coating, the protection of critical parts is strengthened, pipeline failure caused by damage to these parts is avoided, and the operational safety of the system is improved. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;
[0016] Figure 2This is a schematic diagram of the cross-sectional structure of a thermal pipeline and a pipeline insulation layer according to an embodiment of the present invention.
[0017] Figure label:
[0018] 100. Heating pipes; 200. Pipe insulation layer; 300. Self-healing coating; 400. Heat transfer device; 500. Monitoring system. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.
[0020] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.
[0021] The following is in conjunction with the appendix Figures 1-2 This invention describes a closed-loop heating network system provided by some embodiments of the present invention.
[0022] Example 1:
[0023] 1. Heating pipe 100
[0024] In this embodiment, the heating pipe 100 is made of high-performance composite materials such as fiberglass or polyurethane. These composite materials have excellent high-temperature resistance and corrosion resistance, and can withstand the high-temperature and high-pressure environments that may occur in the heating system. The outer surface of the pipe is specially treated to ensure that its surface is smooth, wear-resistant, and has good chemical corrosion resistance.
[0025] The diameter of the heating pipe is designed according to the required heat transfer volume. Generally, a pipe diameter in the range of DN50-DN200 can be selected, depending on the load requirements of the heating system.
[0026] 2. Pipe insulation layer 200
[0027] The pipeline insulation layer 200 is made of high-efficiency insulation materials such as polyurethane foam, rock wool, and glass wool, which has excellent thermal insulation effect and can effectively reduce heat loss caused by environmental factors during pipeline heat transmission. The thickness of the insulation layer is designed to be 20mm to 50mm, and the specific thickness is adjusted according to the external ambient temperature of the pipeline, the amount of heat transmitted, and the operating conditions.
[0028] The pipe insulation layer 200 tightly wraps around the outer surface of the heat pipe 100 to ensure maximum heat flow inside the pipe and minimize heat loss to the environment.
[0029] 3. Self-healing coating 300
[0030] The self-healing coating 300 consists of microcapsule-encapsulated repair material and is applied to the outer surface of the heat pipe 100. Specifically:
[0031] Coating method: Self-healing coating 300 is applied evenly to the outer surface of the heating pipe using airless spraying or brushing. The coating thickness is 0.5 to 2 mm, forming a uniform protective layer that protects the pipe from external factors.
[0032] Microcapsule repair material: The microcapsules contain high-performance polymer materials that can repair microcracks in pipelines. The microcapsules are water-soluble at high temperatures. When microcracks appear in the pipeline, the microcapsules rupture under the action of high-temperature steam inside the pipeline, and the repair fluid is automatically released and quickly fills the cracks. After solidification, the integrity of the pipeline surface is restored.
[0033] Repair process: When microcracks appear in the heating pipe 100 during operation, the microcapsules within the coating will rupture due to the release of steam, releasing a repair fluid to fill the cracks. The repair fluid is a high-performance polymer that can quickly fill cracks and solidify, restoring the pipe's seal and preventing further leakage or corrosion.
[0034] The self-healing coating 300 is located on the outer surface of the heat pipe 100, covering areas that are prone to damage, such as the pipe surface, welded joints, and elbows.
[0035] 4. Heat transfer device 400
[0036] A heat transfer device 400 is installed at both ends of a heat pipe to transport heat and regulate the temperature and pressure of the fluid within the pipe. In this embodiment, the heat transfer device 400 includes a heat pump, a regulating valve, and a temperature control device. By regulating the temperature, pressure, and flow rate of the fluid, it ensures efficient and stable heat transfer within the pipe and adjusts the load on the pipe network as needed.
[0037] The operating principle of the heat transfer device is to drive the flow of hot water or steam through the pump body, and to regulate the temperature and pressure in the pipeline by using regulating valves and temperature control devices to ensure that the system can operate stably under different working conditions.
[0038] 5. Monitoring system 500
[0039] The monitoring system provides real-time monitoring of the pipeline's operational status, primarily including temperature, pressure, and leakage detection. The system is installed at critical locations within the pipeline network, such as welded joints, elbows, and other areas where problems may occur.
[0040] The main components of the monitoring system include sensors, an intelligent control module, regulating valves, and a feedback system. Sensors collect parameters such as temperature, pressure, and flow rate within the pipeline in real time and transmit the data to the intelligent control module. The intelligent control module adjusts the thermal flow rate in the pipeline based on the feedback data, ensuring the pipeline's operational safety under different conditions.
[0041] When the monitoring system detects a leak or abnormality in the pipeline, it will automatically issue an alarm signal and adjust the flow and pressure through regulating valves to prevent accidents from occurring.
[0042] 6. System Installation and Maintenance
[0043] This closed-loop heating network system employs a modular design, allowing for the disassembly, maintenance, and replacement of pipe joints as needed. This design not only reduces installation and maintenance costs but also improves system reliability and maintainability. All critical components, such as heat transfer devices and monitoring systems, can be easily replaced and maintained.
[0044] During system operation, the monitoring system will detect the status of each component in real time and provide feedback data to support preventive maintenance and ensure that the system is always in optimal working condition.
[0045] Specifically, the self-healing coating 300 is located on the outer surface of the heating pipe 100, covering the outer surface of the heating pipe 100, welded joints, elbows, and the installation points of the monitoring system 500 on the surface of the heating pipe 100. The pipe insulation layer 200 is in close contact with the outer surface of the coating by wrapping, and both the inner and outer surfaces of the pipe insulation layer 200 are provided with a thin film layer adhered to the surface of the self-healing coating 300 to prevent the self-healing coating 300 from contacting external moisture and to ensure the continuity of the coating performance.
[0046] Summary of implementation methods:
[0047] The closed-loop thermal pipeline system in this embodiment employs innovative designs such as pipes made of high-temperature corrosion-resistant composite materials, insulation layers, and self-healing coatings, resulting in high durability, operational safety, and stability. The self-healing coating, through microencapsulated repair fluid, provides immediate repair capabilities to the pipe surface, effectively preventing crack propagation and pipeline leaks. The real-time feedback mechanism of the monitoring system and the dynamic control of the regulating valves ensure precise regulation of pipeline flow and pressure, enabling the entire system to operate stably and efficiently over the long term.
[0048] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0049] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A closed-loop heating network system, characterized in that, include: The heating pipe (100) is made of high-temperature resistant and corrosion-resistant composite material; The pipe insulation layer (200) covers the outer surface of the heat pipe (100) to reduce heat loss. The pipe insulation layer (200) is made of high-efficiency insulation material. A self-healing coating (300) is applied to the surface of the thermal pipe (100). The self-healing coating (300) is a coating composed of microcapsules. The microcapsules contain a repair fluid that can react chemically with the crack in the pipe. The repair fluid is a high-performance polymer material component that can quickly fill the crack and cure. A heat transfer device (400) is connected to one end of the heat pipe (100) for transporting heat and regulating the temperature and pressure of the fluid; The monitoring system (500) is installed at each welded joint and elbow of the pipeline network to monitor the temperature, pressure and leakage status of the pipeline in real time. The monitoring system (500) adjusts the thermal flow through regulating valves and adjusts the pipeline flow and pressure according to the data fed back by the monitoring system through the intelligent control module.
2. The closed-loop heating network system according to claim 1, characterized in that, The composite material of the heat pipe (100) is either fiberglass or polyurethane.
3. A closed-loop heating network system according to claim 1, characterized in that... The self-healing coating (300) is a self-healing coating containing microcapsule-encapsulated repair material. The microcapsules are high-temperature water-soluble vesicles that melt and rupture when microcracks occur in the pipeline due to the action of overflowing steam, releasing the repair material and filling the crack.
4. A closed-loop heating network system according to claim 1, characterized in that, The self-healing coating (300) is applied to the outer surface of the pipe by airless spraying or brushing, forming a uniform protective layer.
5. A closed-loop heating network system according to claim 1, characterized in that, The self-healing coating (300) is bonded to the outer surface of the heat pipe by coating method. The coating thickness is 0.5 to 2 mm. The self-healing coating (300) is located on the outer surface of the pipe. The pipe insulation layer (200) is located outside the self-healing coating (300). The thickness of the pipe insulation layer (200) is 20 mm to 50 mm.
6. A closed-loop heating network system according to claim 1, characterized in that, The self-healing coating (300) is located on the outer surface of the heat pipe (100), covering the outer surface of the heat pipe (100), welded joints, elbows, and the installation points of the monitoring system (500) on the surface of the heat pipe (100).
7. A closed-loop heating network system according to claim 1, characterized in that, The pipe insulation layer (200) is in close contact with the outer surface of the coating by wrapping, and both the inner and outer sides of the pipe insulation layer (200) are provided with a thin film layer that is adhered to the surface of the self-healing coating (300) to prevent the self-healing coating (300) from contacting external moisture and to ensure the continuity of the coating performance.