CN200946805Y

CN200946805Y - Circulating fluidized bed diversion and wear preventive boiler

Info

Publication number: CN200946805Y
Application number: CN 200620072429
Authority: CN
Inventors: 顾利平; 陆屏; 赵春山
Original assignee: 顾利平
Priority date: 2006-04-03
Filing date: 2006-04-03
Publication date: 2007-09-12
Anticipated expiration: 2016-04-03

Abstract

The utility model relates to a circulating fluidized bed stream guidance abrasion-resistant boiler which can reduce the deflection of the velocity of flow of the high-temperature smoke rotating under the action of inertia force, thereby reducing the partial abrasion of the heating surface of the boiler and further preventing the bursting and leaking accidents caused by an abrasion of steel tube and finally guaranteeing the normal operation of the boiler. The utility model consists of a high-temperature cyclone separator and is characterized in that: a horizontal section of an exit of the high-temperature cyclone separator is provided with a plurality of vertical guide plates whose arrangement direction is identical with the direction of an exit access and whose height matches with that of the horizontal section of the exit of the cyclone separator.

Description

Circulating Fluidized Bed Conservancy Diversion Antiwear Boiler

(1) technical field

The utility model relates to boiler, specifically a kind of Circulating Fluidized Bed Conservancy Diversion Antiwear Boiler.

(2) background technology

In high temperature cyclone separating CFBB, the flue gas of high temperature cyclone separator outlet rotates at a high speed because of effect of inertia, and smoke content is higher; Because of outlet section flue gas flow length is restricted, the flue gas flow rate deviation is obvious again, and steady flow result is bad.Thereby cause the concentrated wear of outlet section boiler heating surface, cause the local steel pipe wearing and tearing of heating surface rupture and leakage, have a strong impact on the normal operation of boiler.

(3) summary of the invention

The utility model provides a kind of Circulating Fluidized Bed Conservancy Diversion Antiwear Boiler, it can reduce the velocity deviation because of the high-temperature flue gas of effect of inertia rotation, thereby reduce the concentrated wear of boiler heating surface, prevent the rupture and leakage accident that steel pipe causes because of wearing and tearing, guarantee the normal operation of boiler.

Its technical scheme is such: it comprises high temperature cyclone separator, it is characterized in that: high temperature cyclone separator outlet horizontal segment is equipped with the vertical deflector of multiple tracks, the direction of deflector is consistent with the direction of exit passageway, and the height of the height of deflector and cyclone separator outlet horizontal segment is complementary.

It is further characterized in that: described deflector has the 2-6 road; The cross section of described deflector can be rectangle, rhombus or streamlined; Described deflector can adopt the brick one-tenth of resistant to elevated temperatures rectangle, rhombus or streamlined; In order to prevent to collapse with described brick deflector, the fragment of brick center of per pass deflector is installed with interior ventilation cooling pipe, and the two ends of described steel pipe are passed upper and lower heat-insulation layer of boiler and steel plate respectively, and an end of steel pipe is an air inlet, and the other end is an air outlet; The air inlet of described steel pipe connects boiler blower, the air outlet of described steel pipe and boiler once or secondary air channel be connected; Described rectangular tiles, rhombus brick or streamlined brick can divide forward and backward two bats to form, and forward and backward two bat junctions have gap respectively, block the pillar steel pipe, and described pillar steel pipe twines the high-temperature flexible thing outward; Described forward and backward two bats have last convex shoulder and following convex shoulder respectively, and last convex shoulder, following convex shoulder are overlapped into a full sized brick, and last convex shoulder, following convex shoulder have pin or horizontal groove or fin are arranged respectively, intermesh between forward and backward two bats; The above and below of described forward and backward two bats has groove or fin longitudinally respectively, makes between the upper and lower brick and intermeshes.

The utility model has the advantages that easily manufacturedly, install the multiple tracks deflector additional at outlet section, can prevent the concentrated wear of boiler heating surface effectively, effect is obvious, and is safe and reliable; And the deflector cost is low, has reduced to preventing the construction costs of the inhomogeneous required lengthening steady flow segment of flue gas, can make the structure of boiler compact more perfect.

(4) description of drawings

Fig. 1 is the vertical view that the high temperature cyclone separator outlet horizontal segment of the vertical deflector of multiple tracks is housed, and wherein: 1 is preceding anchor post steel pipe; 2 is back anchor post steel pipe; 3 is preceding bat; 4 is the back bat; 5 are the cyclone separator outlet.

Fig. 2 is the preceding bat of streamlined brick, and wherein: 2a is a front view; 2b is a vertical view; 2c is a left view.

Fig. 3 is the back bat of streamlined brick, and wherein: 3a is a front view; 3b is a vertical view; 3c is a left view.

(5) specific embodiment

Circulating Fluidized Bed Conservancy Diversion Antiwear Boiler, it comprises high temperature cyclone separator outlet horizontal segment, at high temperature cyclone separator outlet horizontal segment, the vertical brick deflector in 4 roads is housed, the fragment of brick of deflector is poured into a mould in advance by the diamond spar mullite pouring material and is formed.The direction of deflector is consistent with the direction of exit passageway, and the height of the height of deflector and cyclone separator outlet horizontal segment is complementary, as Fig. 1. Fig. 2 and shown in Figure 3.The vertical brick deflector of per pass prevents that by 2 diameter 51mm steel pipes 1 and 2 pillar that fixes deflector in use is subjected to collapse after sweep of gases and the thermal expansion.The anchor post steel pipe is coated in the deflector brick, does not directly contact with flue gas.In steel pipe 1 and 2, blowing air cools off from top to bottom, can be used as the burning that wind and secondary wind participate in boiler after the air heat.The cross section of deflector is a streamlined, and long is 400mm, and the widest part is 100mm.The streamlined brick is made up of forward and backward two bats, and preceding bat has last convex shoulder, has horizontal groove, back bat that following convex shoulder is arranged on the lower plane of convex shoulder, on the last plane of convex shoulder horizontal fin is arranged, and convex shoulder is superimposed up and down, forms a full sized brick, and groove and fin intermesh.The upper surface of forward and backward two bats and lower surface have fin and groove respectively, and groove and fin intermesh between upper and lower two bricks, and making can not forward and backward or left and right displacement between the streamlined brick.Forward and backward two bat junctions have gap respectively, and in the middle of the anchor post that is wound with asbestos yarn was stuck in, anchor post played a supportive role, and prevents that the monolithic deflector from collapsing.Turn to and velocity deviation according to air-flow earlier during installation, determine the quantity of the vertical deflector of multiple tracks and the location dimension that all around is arranged.Determine the position of the air-cooled steel pipe of anchor post simultaneously, and fix it.Build the streamlined deflector by laying bricks or stones, and stay 5mm left and right sides dilatation joint, and inlay with flexible asbestos material on top and flue top.

The anti-wear boiler of recirculating fluidized bed of the present utility model, the rotation wind of hot flue gases of having exempted to have higher smoke content has prolonged the service life of boiler to the concentrated wear of boiler heating surface steel pipe, and the thermal efficiency of boiler also increases simultaneously.

Claims

1, Circulating Fluidized Bed Conservancy Diversion Antiwear Boiler, it comprises high temperature cyclone separator, it is characterized in that: the outlet horizontal segment of described high temperature cyclone separator is equipped with the vertical deflector of multiple tracks, the direction of described deflector is consistent with the direction of exit passageway, and the height of the height of described deflector and cyclone separator outlet horizontal segment is complementary.

2, according to the described Circulating Fluidized Bed Conservancy Diversion Antiwear Boiler of claim 1, it is characterized in that: described deflector has the 2-6 road.

3, according to the described Circulating Fluidized Bed Conservancy Diversion Antiwear Boiler of claim 1, it is characterized in that: the cross section of described deflector can be rectangle, rhombus or streamlined.

4, according to the described Circulating Fluidized Bed Conservancy Diversion Antiwear Boiler of claim 1, it is characterized in that: described deflector can adopt the brick one-tenth of resistant to elevated temperatures rectangle, rhombus or streamlined.

5, according to the described Circulating Fluidized Bed Conservancy Diversion Antiwear Boiler of claim 4, it is characterized in that: in order to prevent to collapse with described brick deflector, the fragment of brick center of per pass deflector is installed with interior ventilation cooling pipe, the two ends of described steel pipe are passed upper and lower heat-insulation layer of boiler and steel plate respectively, one end of steel pipe is an air inlet, and the other end is an air outlet.

6, according to the described Circulating Fluidized Bed Conservancy Diversion Antiwear Boiler of claim 5, it is characterized in that: the air inlet of described steel pipe connects boiler blower, the air outlet of described steel pipe and boiler once or secondary air channel be connected.

7, according to the described Circulating Fluidized Bed Conservancy Diversion Antiwear Boiler of claim 4, it is characterized in that: described rectangular tiles, rhombus brick or streamlined brick can divide forward and backward two bats to form, forward and backward two bat junctions have gap respectively, block the pillar steel pipe, described pillar steel pipe twines the high-temperature flexible thing outward.

8, according to the described Circulating Fluidized Bed Conservancy Diversion Antiwear Boiler of claim 7, it is characterized in that: described forward and backward two bats have last convex shoulder and following convex shoulder respectively, last convex shoulder, following convex shoulder are overlapped into a full sized brick, last convex shoulder, following convex shoulder have pin or horizontal groove or fin are arranged respectively, intermesh between forward and backward two bats.

9, according to the described Circulating Fluidized Bed Conservancy Diversion Antiwear Boiler of claim 7, it is characterized in that: the above and below of described forward and backward two bats has groove or fin longitudinally respectively, makes between the upper and lower brick and intermeshes.