Radiator gas liquid tube expansion machine

Radiator gas liquid tube expansion machine

Function

Radiator gas liquid tube expansion machine is a special hydraulic expansion equipment for the expansion and tight connection of tubes and tube plates in the manufacture of heat exchangers, condensers, high-pressure heaters and other equipment. The use of hydraulic expansion technology has the advantages of low manufacturing cost, light labor intensity, short manufacturing cycle, uniform and reliable expansion quality. Hydraulic expansion joint technology has been widely used in the manufacturing of heat exchangers in petrochemical, electric power, boiler, nuclear power, refrigeration and other fields, greatly improving the quality and production efficiency of domestic heat exchanger equipment.

Radiator gas liquid tube expansion machine is a new generation of expansion equipment developed by our company, driven by compressed air, specially used for ultra-high pressure expansion of ultra-thick pipe walls. The application of this equipment can be a variety of specifications, a variety of materials of the heat exchange pipe for reliable expansion. The heat exchanger manufactured by the technique has the advantages of uniform and reliable expansion quality, long service life and low failure rate. Moreover, the expansion operation is simple, the expansion speed is fast, the manufacturing or maintenance time is greatly shortened, the production loss of chemical equipment is reduced, and the economic benefits are very high. As the earliest enterprise committed to the research and development of hydraulic expansion technology in China, after more than 10 years of continuous improvement, the products are leading in China.

Hydraulic tube expansion machine is a special hydraulic expansion equipment used for the expansion and tight connection of tubes and tube plates in the manufacture of heat exchangers, condensers, high-pressure heaters and other equipment. The use of hydraulic expansion technology has the advantages of low manufacturing cost, light labor intensity, short manufacturing cycle, uniform and reliable expansion quality. Hydraulic expansion joint technology has been widely used in the manufacturing of heat exchangers in petrochemical, electric power, boiler, nuclear power, refrigeration and other fields, greatly improving the quality and production efficiency of domestic heat exchanger equipment.

Composition

Radiator gas liquid tube expansion machine is composed of three parts, electric control part, gas drive booster system, expansion connector. The electric control adopts Siemens PLC control. The gas drive supercharger system uses two special liquid superchargers for the high pressure tube expansion machine. The pressure can be increased quickly, and the pressure increase time within 25mm diameter and 5m length can reach the predetermined pressure within ten seconds.

Characteristics

1. The 25-400mm thickness tube plate can be uniformly expanded at one time with full thickness;

2. The full thickness expansion can be applied to intermediate tubeplate or multi-tubeplate heat exchangers of any depth;

3. The full thickness expansion can be applied to intermediate tubeplate or multi-tubeplate heat exchangers of any depth;

4. The residual stress of the device after expansion is low, which is not easy to produce gap corrosion;

5. The axial direction of the heat exchanger after expansion does not stretch and slightly shrinks, which is conducive to reducing operating noise;

6. The error of the inner hole of the pipe is large, and the diameter of the expansion head can be adjusted appropriately on site;

7. No pollution at the expansion joint, the first expansion after welding is not affected;

8. The edge of the heat exchanger with the tube box can be directly expanded, which is very convenient;

9. One person can continuously expand, can expand 5-7 tube heads per minute;

10. The comprehensive economic benefits have been greatly improved.

11. Can expand copper, carbon steel, stainless steel, duplex steel, titanium alloy, composite materials, etc.;

12. High pressure imported rubber expansion bag has strong fatigue resistance, and the average service life is more than 100 times/branch;

13. Integrated design of vulnerable parts - expansion rod, easy to replace;

14. Low labor intensity, high production efficiency, each equipment can expand more than 2000 pipe holes per shift.

Operating principle

The hydraulic tube expander used in domestic hydraulic expansion technology is composed of high-strength alloy steel core rod and imported elastic rubber resistant to high pressure, integrated design, can withstand ultra-high pressure without the use of seals, easy to use, high work efficiency, working principle is shown in the figure. It uses the high-pressure hydraulic pressure provided by the pipe expansion machine to apply the radial pressure generated by the high-pressure elastic rubber body to expand the pipe plate. When the ultra-high hydraulic pressure enters the high-pressure elastic rubber body through the high-strength alloy core rod, the high-pressure elastic rubber body generates radial pressure, which is enough to make the pipe material plastic deformation, so as to realize the expansion between the pipe and the tube plate.

Main technical parameters

① Rated expansion pressure: 0-40 M Pa, 0-70mpa (higher pressure is optional)

② Expansion speed: about 1 /min (water injection -- expansion -- drainage)

③ Expansion medium: water

④ High pressure pipe pressure burst pressure: 100 M pa

⑤ Input power: 220 V

⑥ Drive: compressed air 5-8 kg

⑦ Water source: tap water

⑧ Control system: PLC

⑨ Pressure control accuracy: +-1%

⑩ Workstation: 1 workstation