Technology realization elements

Technical realization elements:

5. The purpose of this utility model is to provide a pressurized sealing system suitable for rotary air preheaters.

6. In order to achieve the above-mentioned purpose, the technical scheme adopted by this utility model is:

7. A pressurized sealing system suitable for a rotary air preheater, the rotary air preheater comprising a rotor, a sealing plate arranged on the outer side of the rotor, and the pressurized sealing system comprising A pipe, a pressurizing component arranged on the pipe, a groove is formed on the side of the sealing plate facing the rotor, and one end of the pipe is connected to the inlet of the rotary air preheater The flue is in communication, and the other end is in communication with the groove.

8. Preferably, the sealing plate includes a radial sealing plate arranged on the radial surface of the rotor, and an axial sealing plate arranged on the axial surface of the rotor. Both the sealing plate and the axial sealing plate are provided with the groove, the other end of the pipe is connected with a plurality of branch pipes, and the pipe is sealed with the radial sealing plate and the axial direction through the branch pipe. The slots on the board communicate with each other.

9. Further preferably, the groove on the radial sealing plate extends along the radial direction of the rotor, and the

The groove on the axial sealing plate extends along the axial direction of the rotor.

10. Preferably, the groove on the sealing plate includes a first groove and a second groove, the first groove is located in the middle of the sealing plate, and the second groove is opposite to the first groove. The groove is closer to the flue gas side channel of the rotor, and a plurality of sealing air curtains are formed by opening a plurality of grooves, and the sealing effect is obviously improved.

11. Preferably, the pressurized sealing system further includes a sealing bellows, the sealing bellows is arranged on the side of the sealing plate that faces away from the rotor, and the pipe passes through the sealing bellows and The grooves are connected.

12. Further preferably, the other end of the pipeline is connected with a plurality of branch pipes, and each of the branch pipes communicates with the groove through the sealing bellows.

13. Preferably, the sealing system further includes an entrance regulating door, and the entrance regulating door is located between the supercharging component and the entrance flue of the rotary air preheater.

14. Preferably, there is a gap between the sealing plate and the rotor, a sealing element is provided on the rotor, and the height of the sealing element is not greater than the height of the gap.

15. Preferably, the rotor has a plurality of airflow channels, the sealing plate is arranged between adjacent airflow channels, and the grooves are opened on the sealing plates.

16. Further preferably, there is only one pressurizing component.

17. Due to the application of the above technical solutions, the utility model has the following advantages compared with the prior art:

18. The pressurized sealing system of the present invention cuts slots on the seal plate and introduces pressurized flue gas to form an air curtain between the seal plate and the rotor, which will not produce severe mechanical contact friction and will not cause air preheating The drive current increases and the system runs stably. While improving the sealing performance, it reduces the wear and fall of the sealing device. The air leakage rate of the air preheater can be ensured to maintain a relatively stable state during the entire operation cycle. The system has high reliability and reduces the number of units. Overhaul and maintenance costs.

Please contact us at zhang@pride-cnc.com