PERT pipeline for heating chemical reaction kettle

Abstract

The utility model discloses a PERT pipeline for a chemical reaction kettle heating system, and relates to the technical field of chemical equipment. The pipeline comprises an external protection layer, a middle reinforcing rib, an internal spiral layer and a temperature monitoring meter, the external protection layer covers the outer surface of the pipeline and is used for improving corrosion resistance; the middle reinforcing rib is arranged between the external protection layer and the internal spiral layer and is used for enhancing the mechanical strength of the pipeline; the inner spiral layer is provided with a spiral structure and is used for optimizing a fluid flowing path in the pipeline and improving the heat exchange efficiency; the temperature monitoring meter is embedded in a mounting area formed between the reinforcing ribs and used for monitoring the temperature of fluid in the pipeline in real time. The PERT pipeline is reasonable in structure, has corrosion resistance, compressive strength and heat exchange performance, is suitable for a chemical reaction kettle heating system in a high-temperature and high-pressure environment, and runs stably and reliably.

Description

Technical Field

[0001] This utility model relates to the field of chemical pipelines, and more specifically to a PERT pipeline for heating chemical reactors. Background Technology

[0002] In the chemical industry, reaction vessels are common and important pieces of equipment used to realize various chemical reaction processes. To maintain the specific temperatures required for the reaction, heating systems are usually used in conjunction with the reaction vessels, with the piping system playing a crucial role in heat transfer and heat transport. The performance of the piping directly affects the efficiency, safety, and service life of the entire reaction system.

[0003] In existing chemical heating systems, piping materials typically include metal pipes and ordinary plastic pipes. While metal pipes possess high mechanical strength and thermal conductivity, they are prone to corrosion in corrosive media. Long-term use can lead to problems such as internal scaling, increased thermal resistance, and localized perforation, which not only reduces heat exchange efficiency but also poses a serious risk of leakage. Furthermore, metal pipes are more difficult to install and bend, are heavier, and have higher maintenance costs.

[0004] In comparison, traditional plastic pipes (such as PVC, PE, PB, etc.) have good corrosion resistance and low thermal conductivity, but their mechanical strength and high temperature resistance are insufficient. They cannot withstand high temperature and high pressure environments for a long time and are prone to softening, deformation or even cracking, which cannot meet the requirements of chemical reaction vessels for thermal stability and pressure resistance.

[0005] Therefore, some companies have begun to try using high-temperature resistant polyethylene (PERT) as the base material for pipes. PERT combines the flexibility of plastics with a certain degree of high-temperature resistance. Its molecular chains have a high degree of branching, giving it good creep resistance and making it suitable for long-term hot water transportation at temperatures above 60°C.

[0006] However, existing PERT pipelines still have the following problems:

[0007] 1. Insufficient resistance to mechanical loads: When subjected to internal heat medium pressure or external physical impact for a long period of time, it is prone to cracking or fatigue damage;

[0008] 2. Limited resistance to chemical corrosion: Single PERT materials still have limited resistance to certain strong acids, strong alkalis or organic solvents;

[0009] 3. Low fluid heat exchange efficiency: Although the smooth inner wall helps to reduce flow resistance, the lack of fluid disturbance design means that the heat exchange efficiency is not effectively improved.

[0010] 4. Lack of intelligent control structure: Most current systems rely on external sensors, making it difficult to achieve real-time and accurate monitoring and feedback adjustment of the temperature inside the pipeline.

[0011] Therefore, there is an urgent need for a new type of PERT pipe with optimized structure that can further improve its mechanical strength, heat exchange efficiency and intelligent control capabilities while maintaining its advantages such as flexibility, temperature resistance and corrosion resistance, so as to meet the high requirements of heating system applications in chemical reactors. Utility Model Content

[0012] To address the problems existing in the prior art, this utility model provides a PERT pipe for heating chemical reactors. Through innovative design of the pipe structure, the corrosion resistance, mechanical strength, and fluid flow efficiency of the pipe can be effectively improved, ensuring the long-term stable operation of the heating system.

[0013] To achieve the above objectives, this utility model provides a PERT pipe for a chemical reactor heating system, comprising the following structure:

[0014] External protective layer: Covering the outer surface of the pipe to enhance its corrosion resistance. The external protective layer typically uses polyurethane coatings or other chemically resistant materials, effectively resisting corrosion from chemical media and extending the pipe's service life.

[0015] Intermediate reinforcing rib: Located between the outer protective layer and the inner spiral layer, the intermediate reinforcing rib consists of multiple reinforcing members and is used to enhance the mechanical strength of the pipeline. The intermediate reinforcing rib can be made of metal or composite materials, possessing high strength and compressive strength to ensure the stability of the pipeline under high temperature and high pressure environments.

[0016] Internal spiral layer: Utilizing a spiral structure design, this alters the fluid flow path. The spiral structure increases the contact frequency between the fluid and the pipe wall, thereby improving heat exchange efficiency and enhancing the overall heating effect of the system.

[0017] Temperature monitoring gauge: Integrated inside the pipeline, used to monitor the temperature of the fluid within the pipeline in real time. The temperature monitoring gauge can adjust the operation of the heating system based on the monitored temperature data to ensure that the heating temperature is maintained within an appropriate range.

[0018] Installation Area: The temperature monitor is installed within the installation area formed between the central reinforcing ribs. This installation area effectively prevents the temperature monitor from being interfered with by the external environment, ensuring its stability and accuracy.

[0019] As can be seen from the above technical solution, compared with the prior art, this utility model solves the application problems of existing pipelines in high temperature, high pressure and corrosive environments through multi-layer structural design and optimized pipeline layout. The outer protective layer effectively resists corrosion, the middle reinforcing rib enhances the structural strength of the pipeline, the internal spiral layer optimizes fluid flow, thereby improving the heat exchange effect, and the integration of temperature monitoring meter realizes efficient and safe control of the heating system. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0022] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0023] 1-Outer protective layer, 2-Intermediate reinforcing rib, 201-Installation area, 3-Inner spiral layer, 301-Spiral structure, 4-Temperature monitoring meter. Detailed Implementation

[0024] 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.

[0025] Example

[0026] like Figure 1 and Figure 2 As shown, this utility model provides a PERT pipe for a heating system of a chemical reactor, which includes an outer protective layer 1, a middle reinforcing rib 2, an inner spiral layer 3 and a temperature monitoring meter arranged sequentially from the outside to the inside.

[0027] The outer protective layer 1 is the outermost protective structure of the pipeline, preferably made of polyurethane material or fluoroplastic composite layer with excellent corrosion resistance, used to prevent damage to the pipeline from corrosive substances such as acids, alkalis, and salt spray in the chemical environment. This protective layer is formed integrally with the pipe body by co-extrusion molding or hot melt coating, and has good weather resistance and mechanical protection performance. The thickness is preferably set between 1mm and 3mm.

[0028] The intermediate reinforcing rib 2 is positioned between the outer protective layer 1 and the inner spiral layer 3, enhancing the pipeline's pressure resistance and overall structural strength. The reinforcing rib comprises multiple sets of reinforcing components evenly distributed along the pipeline's axial direction or in a spiral pattern. Preferably, it uses fiberglass reinforced tape, metal mesh, or reinforced nylon strips, embedded in PERT material using hot melt adhesive or high-temperature hot pressing to form a composite structure. Installation areas are provided between some of the reinforcing ribs for embedding temperature monitoring gauges 4, preventing protruding devices from interfering with pipeline installation.

[0029] The inner spiral layer 3 is a flow-guiding structure layer made of PERT material, and its inner surface has a spiral flow-guiding structure 31 extending along the pipe axis. This spiral structure is used to disturb the flow path of the hot fluid inside the pipe, increase the heat exchange area between the heat medium and the pipe wall, improve heat transfer efficiency, and at the same time reduce pressure fluctuations caused by fluid impact. The pitch of the spiral structure is preferably 20mm to 80mm, the flow-guiding angle is 15° to 45°, and the depth is 10% to 25% of the pipe wall thickness.

[0030] Temperature monitoring gauge 4 is used to detect the temperature of the heating medium inside the pipeline in real time. The temperature monitoring gauge is preferably a PT100 platinum resistance thermometer or a K-type thermocouple, embedded in the reserved area of ​​the reinforcing rib, and connected to the temperature control system via wires to achieve dynamic control of the heating process. To improve safety, temperature monitoring gauge 4 is sealed with a silicone sealing ring, providing good waterproof and corrosion-resistant performance, and facilitating replacement and maintenance.

[0031] The PERT pipe of this utility model organically combines the outer protective layer 1, the middle reinforcing rib 2, the inner spiral layer 3 and the temperature monitoring gauge 4 to form a special pipe for heating system of chemical reactor with excellent corrosion resistance, high strength, strong thermal conductivity and intelligent temperature control function. It is especially suitable for working conditions that require long-term high-temperature operation and highly corrosive media.

[0032] In practical applications, the PERT pipeline of this invention can be used in the jacketed heat transfer systems of reactors in industries such as chemical, pharmaceutical, and food processing, providing uniform heating to the reactor through hot oil or steam circulation. The pipeline exhibits no significant aging after 500 hours of continuous operation at 130℃, and the system temperature control error is less than ±0.3℃, significantly improving system operational stability and energy efficiency.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A PERT pipe for heating a chemical reactor, characterized in that, The PERT pipe includes: an outer protective layer (1) covering the outer surface of the pipe to enhance its corrosion resistance; Intermediate reinforcing rib (2), wherein multiple intermediate reinforcing ribs (2) are provided and located between the outer protective layer (1) and the inner spiral layer (3) to enhance the mechanical strength of the pipe; The internal spiral layer (3) is designed with a spiral structure (301) to change the flow path of the fluid.

2. The PERT pipe for heating a chemical reactor according to claim 1, characterized in that, The spiral structure (301) is used to increase the contact frequency between the fluid and the pipe wall.

3. The PERT pipe for heating a chemical reactor according to claim 1, characterized in that, It also includes a temperature monitoring meter (4) integrated into the pipe for monitoring the temperature of the fluid inside the pipe.

4. The PERT pipe for heating a chemical reactor according to claim 3, characterized in that, The temperature monitor (4) is installed in the installation area (201) formed between the intermediate reinforcing ribs (2) to ensure the stability of the temperature monitor and prevent interference from the external environment.

5. The PERT pipe for heating a chemical reactor according to claim 1, characterized in that, The external protective layer (1) is a polyurethane coating.

6. The PERT pipe for heating a chemical reactor according to claim 1, characterized in that, The intermediate reinforcing rib (2) is made of metal or composite material.

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