CN209763026U - Shielding wall structure for protecting first row of tubes of boiler convection tube bundle - Google Patents

Abstract

The utility model relates to a to boiler convection bank first bank of tubes play shielding wall structure of guard action, the boiler adopts two boiler drums horizontal formula to arrange, goes up boiler drum (1) and communicates by multirow convection bank (3) between boiler drum (2) down, and first row convection bank (4) rear portion in convection bank (3) is smoke baffle wall (5), and smoke baffle wall (6) that guard action were extended to bank the place ahead in smoke baffle wall (5). The utility model discloses the smoke barrier wall after will original first row convection bank extends to tube bank the place ahead, forms the shielding wall that plays the guard action. The high and many fly ash particles of smuggleing secretly of furnace exit flue gas temperature, the baffle wall wraps up the protection with the convection bank of first row in it, reduces the temperature of first row bank, reduces the wearing and tearing of fly ash particle to the tube bank, improves its operating condition, extension tube bank life.

Description

Shielding wall structure for protecting first row of tubes of boiler convection tube bundle

The technical field is as follows:

the utility model relates to a to boiler convection bank first bank of tubes play the wall structure that shelters from of guard action.

Background art:

as shown in figure 1, the convection bank between the upper and lower drums of the existing double-drum horizontal boiler is provided with a smoke barrier (5) behind the first row of convection bank (4), and the following problems mainly exist:

The flue gas temperature at the outlet of the hearth is high and carries a plurality of fly ash particles, the flue gas is directly roasted and scoured against the first row of convection bank (4), the first row of convection bank (4) has poor working conditions, and the service life is reduced under the scouring abrasion of the fly ash particles.

the invention content is as follows:

The utility model aims at providing a to boiler convection bank first bank of tubes play the wall structure that shelters from of guard action to make the first bank of tubes of convection bank obtain the protection, avoid being erodeed wear, make its life can prolong. The technical scheme of the utility model is that: the utility model provides a to boiler convection bank first bank of tubes play shielding wall structure of guard action, the boiler adopts two boiler drums horizontal formula to arrange, goes up boiler drum (1) and communicates by multirow convection bank (3) between boiler drum (2) down, and first row convection bank (4) rear portion in convection bank (3) is smoke barrier (5), and smoke barrier (5) extend shielding wall (6) that play the guard action to tube bank the place ahead.

the utility model discloses a theory of operation is:

After the high-temperature flue gas (7) flowing out of the hearth meets the shielding wall (6), fly ash particles carried in the high-temperature flue gas (7) are roasted and washed on the shielding wall (6), so that the first calandria (4) of the convection bank is protected, the erosion abrasion is avoided, and the service life of the convection bank is prolonged.

The utility model has the advantages that:

The flue gas 7 at the outlet of the hearth is high in temperature and carries a lot of fly ash particles, the first row of convection bank (4) is wrapped and protected in the flue gas by the baffle wall (6), the working temperature of the first row of convection bank (4) is reduced, the scouring wear of the fly ash particles to the bank is reduced, the working condition of the bank is improved, and the service life of the bank is prolonged. High-temperature flue gas (7) flowing out of the hearth meets the shielding wall (6), and scouring wear cannot be caused to the first row of convection bank (4) under the protection of the shielding wall (6).

Description of the drawings:

FIG. 1 is a structural view of a convection bank partition wall of an original boiler

FIG. 2 is the structure view of the shielding wall for protecting the first exhaust pipe of the convection bank of the boiler

the specific implementation mode is as follows:

As shown in fig. 2 the utility model relates to a to boiler convection bank first bank of tubes play the guard action shelter from wall structure, the boiler adopts two boiler barrels horizontal formula to arrange, goes up by multirow convection bank 3 intercommunication between boiler barrel 1 and the lower boiler barrel 2, and 4 rear portions of first row convection bank in the convection bank 3 are smoke barrier 5, and smoke barrier 5 extends the guard action's that shelters from wall 6 to tube bank the place ahead.

After the high-temperature flue gas 7 flowing out of the hearth meets the shielding wall 6, fly ash particles carried in the high-temperature flue gas 7 are roasted and washed on the shielding wall 6, so that the first row of pipes 4 of the convection bank are protected, the washing abrasion is avoided, and the service life of the convection bank is prolonged.

Claims (1)

1. The utility model provides a to boiler convection bank first bank of tubes play guard action's shielding wall structure which characterized by: the boiler adopts the horizontal formula of two drums to arrange, goes up drum (1) and communicates by multirow convection bank (3) between drum (2), and first row convection bank (4) rear portion in convection bank (3) is smoke barrier (5), and smoke barrier (6) that the effect of protection is extended to tube bank the place ahead to smoke barrier (5).