CN201495245U

CN201495245U - Stream guidance type blast furnace tuyere small sleeve

Info

Publication number: CN201495245U
Application number: CN2009201887356U
Authority: CN
Inventors: 刘俊良; 王国文; 周水军
Original assignee: Xinyu Greatwall Copper Products Developing Co Ltd
Current assignee: Xinyu Greatwall Copper Products Developing Co Ltd
Priority date: 2009-08-25
Filing date: 2009-08-25
Publication date: 2010-06-02
Anticipated expiration: 2019-08-25

Abstract

The utility model discloses a stream guidance type blast furnace tuyere small sleeve, which includes an annular cavity body, a stream guidance tube, an annular partition plate and a fixing piece. The tuyere small sleeve is mainly characterized in that the stream guidance tube is arranged at a water inlet and communicated with the forefront of the annular cavity body; and the annular partition plate is arranged transversely to form a circulating water channel. The utility model has the efficient effect that cooling water can directly strike the forefront of the tuyere small sleeve, thereby enhancing cooling and improving the heat exchange efficiency at the high temperature zone of the forefront of the tuyere; and the circulating water channel is arranged within the widest range, the water stream guidance avoids cooling dead angle, the water streams guidance can be speeded up, the cooling effect is good, and the service life is long.

Description

The guide flow type blast furnace tuyere small sleeve

Technical field the utility model relates to a kind of metallurgical industry blast furnace air supply system parts, relates in particular to a kind of guide flow type blast furnace tuyere small sleeve.

In the background technology blast furnace ironmaking process,, improve combustion intensity, need in stove, send hot blast usually in order to reduce coke ratio.Blast furnace tuyere small sleeve generally adopts the good red copper casting of thermal conductivity, costs an arm and a leg, and its inside is circulating water cavity, the heat that is transmitted on the copper sheathing can be derived by water coolant.Blast furnace tuyere small sleeve is mounted in blast-furnace tuyere parts foremost, the hot blast temperature that the air port is passed through is more than 1000 ℃, and its front end stretches in the stove, and the outside is the forward position work under bad environment particularly, bear that thermal load more than 1600 ℃ is impacted and the erosion of molten state slag iron, fragile.Present common tubular, spiral or bicavate blast furnace tuyere small sleeve, because internal structure is unreasonable, the dead angle is arranged, the resistance of water is big, water cycle was not smooth after water coolant entered from back cavity, can not directly be discharged to the forward position, heat in time can not be derived, scaling loss is the major cause that causes the tuyere small sleeve consumption big.The summary of the invention the purpose of this utility model provides a kind of good cooling results, and the no dead angle of circulation cooling is simple in structure, is easy to make the guide flow type blast furnace tuyere small sleeve of long service life.

The utility model comprises annular housing, thrust-augmenting nozzle, toroidal membrane and mounting block, it is characterized in that: at the water-in of annular housing thrust-augmenting nozzle is set and communicates foremost with annular housing; The toroidal membrane arranged transversely constitutes the circulation water channel, has water outlet between the dividing plate.

The utility model compared with prior art, its advantage is:

1, adopt thrust-augmenting nozzle that water coolant is directly got to tuyere small sleeve foremost, accelerated the flow velocity of front end, make the cooling that strengthened of high temperature damageable zone, improved the rate of heat exchange of inlet front end high-temperature zone, eliminated cooling dead angle and air chamber, reduced blast furnace tuyere small sleeve and can not in time derive the melting loss that causes because of superthermal load.Improved work-ing life.

2, arranged transversely toroidal membrane in the tuyere small sleeve annular housing sets out the mouth of a river between toroidal membrane, realizes the circulation water channel of wide region, and current deflecting has been avoided the cooling dead angle, derives current and accelerates good cooling results.

3, the utility model can be realized open processing, and fabrication and installation are convenient, and production cost is low.

Description of drawings

Fig. 1 is the utility model structural front view;

Fig. 2 is the utility model A-A cross sectional plan view.

Fig. 3 is the inner baffle structural representation of the utility model annular housing.

Fig. 4 is the utility model Fig. 3 stretch-out view.

Embodiment

Below in conjunction with embodiment and accompanying drawing the utility model is further described:

As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, tuyere small sleeve is made of annular housing, thrust-augmenting nozzle, the toroidal membrane of interior outer closure, water-in at tuyere small sleeve is provided with thrust-augmenting nozzle 1, its the other end extend into inlet front end, like this, water coolant can the big front end of first cooling heat load intensity, and the heat that mainly carries out heat exchange at inlet front end is taken away.Simultaneously, current are accelerated, and have eliminated cooling dead angle and air chamber, have strengthened the cooling of inlet front end.In annular housing, at least 3 annular dividing plates 2 of arranged transversely, the best is 5.Every toroidal membrane 2 opposite positions are provided with 3 open holess that can be connected in series at least, are used for overall fixed toroidal membrane 2 and thrust-augmenting nozzle 1.Serial connection mounting block 3 adopts garden steel or band steel, and is fixing with toroidal membrane 2 welding, constitutes the baffle (see figure 3).Relative position at each toroidal membrane 2 has water outlet through hole 4 (see figure 2)s, communicates between making ring and encircling, and constituting derives the circulation water channel, water outlet through hole 4 one sides are provided with guide plate 5 (see figure 3) water conservancy diversion between ring and ring, make current smooth and easy, not disorderly, direction is shown in Fig. 4 arrow.The wide region that being provided with of toroidal membrane 2 realized deriving current flows out, and has avoided the cooling dead angle, and it is big to derive discharge, has also strengthened the cooling of tuyere small sleeve.

The utility model baffle is installed in the tuyere small sleeve annular housing, can uses.Open water-in, water outlet, water coolant goes directly tuyere small sleeve foremost from thrust-augmenting nozzle 1, because the effect of toroidal membrane 2, water coolant is after front end (ante-chamber) circulates a week, enter back cavity by the port on the toroidal membrane 2, the young cover of circulation cooling air of ring by ring is discharged at last.

Claims

1. a guide flow type blast furnace tuyere small sleeve comprises annular housing, thrust-augmenting nozzle, and toroidal membrane and mounting block is characterized in that: the water-in at annular housing is provided with thrust-augmenting nozzle, communicates foremost with annular housing; The toroidal membrane arranged transversely constitutes the circulation water channel, has water outlet between the dividing plate.

2. guide flow type blast furnace tuyere small sleeve according to claim 1 is characterized in that mounting block is that round steel or band steel constitute.

3. guide flow type blast furnace tuyere small sleeve according to claim 1 is characterized in that a side of water outlet is provided with guide plate.