Heat exchanger type: Different types of heat exchangers (such as tubular, plate, and spiral plate, etc.) have different structures and characteristics, and the requirements for bundle pullers are also different. For example, the tube bundle of a tubular heat exchanger is usually heavy and long, and the extractor needs to have a large pulling capacity and stability; while the tube bundle of a plate heat exchanger is relatively light and has a compact structure, and the extractor requires a higher size and operating accuracy. Therefore, an appropriate bundle puller must be selected according to the specific type of heat exchanger.
Tube bundle size: Know the parameters such as the diameter, length, number, and weight of the tube bundle. These parameters determine the scope of application of the bundle puller to ensure that the selected equipment can meet the extraction and installation requirements of the tube bundle. If the diameter of the tube bundle is large, an extractor with a larger clamping range should be selected; if the length of the tube bundle is long, the travel of the extractor should be considered sufficient.
Working environment: Consider factors such as temperature, pressure, and humidity in the working environment. If the working environment is harsh, such as high temperature, high humidity, or corrosive gases, a bundle puller with good protection and corrosion resistance is required to ensure the normal operation and service life of the equipment.
Operational requirements: Determine whether some special functions are required according to actual operational needs, such as remote control operation, automatic control, explosion-proof function, etc. For example, in some dangerous areas or high-altitude operation environments, a remote-controlled bundle puller can improve the safety and convenience of operation.
Evaluate equipment performance:
Pulling capacity: This is the core performance indicator of the bundle puller, directly related to whether the equipment can successfully complete the extraction and installation of the tube bundle. Pay attention to parameters such as the maximum pulling weight, pulling speed, and pulling stroke of the equipment. Generally speaking, the greater the pulling weight, the faster the speed, and the longer the stroke, the better the performance of the equipment, but the price may also be higher. A trade-off is required based on actual needs.
Clamping force: Ensure that the bundle puller can firmly clamp the tube bundle to prevent loosening or slipping during the extraction and installation process. Information such as the design of the clamping mechanism and the pressure of the clamping cylinder can be understood to determine if the clamping force is sufficient.
Accuracy and stability: For some heat exchangers with high installation accuracy requirements, a bundle puller with high accuracy and good stability is required. For example, the straightness of the equipment guide rail, the travel accuracy, and the positioning accuracy are all aspects that need to be paid attention to.
Inspect the equipment structure and material
Structural design: Reasonable structural design can improve the efficiency and safety of the equipment. For example, whether the layout of the main traveling crane and the small traveling crane is reasonable, whether the design of the pushing device and the hanging plate device is easy to operate and maintain, and whether it can meet the extraction and installation requirements of different types of tube bundles.
Material quality: High-quality materials can ensure the durability and reliability of the equipment. The main components such as the frame and guide rail should be made of high-strength steel, with good load-bearing capacity and anti-deformation ability; key components such as hydraulic components and electrical components should be selected from reliable brand products to ensure the normal operation of the equipment.
Pay attention to the control system:
Control mode: Common control modes include manual control, wired control, and wireless remote control. Manual control is suitable for simple operation scenarios, but the operation efficiency is low; wired and wireless remote control can improve the convenience and safety of operation, especially in some complex working environments. Select the appropriate control mode according to actual needs.
Control accuracy: The control system should be able to accurately control the movement of the equipment, such as the traveling speed of the main traveling crane and the pushing force of the pushing device, to ensure the extraction and installation accuracy of the tube bundle.
Reliability: Check the stability and reliability of the control system to avoid failures during use. Information such as the brand of electrical components, protection level, and fault alarm function can be understood.
Understand the brand and after-sales service:
Brand reputation: Choose a bundle puller from a well-known brand, and the quality and after-sales service are more guaranteed. You can learn about the brand’s reputation and product quality through online searches, industry word-of-mouth, and customer reviews.
After-sales service: Good after-sales service can promptly solve problems with the equipment during use, reducing equipment downtime. Learn about the brand’s after-sales service network, response speed, and maintenance cycle to ensure timely support when maintenance or repair is required.
Conduct actual inspections and tests: If conditions permit, you can personally visit the equipment manufacturer or the use site for inspection, observe the actual operation of the equipment, and understand its performance, operating convenience, and other aspects. You can also ask the manufacturer to provide a test report or conduct on-site tests to verify whether the performance indicators of the equipment meet the requirements.
