CN213652543U

CN213652543U - Copper steel composite cooling plate for blast furnace

Info

Publication number: CN213652543U
Application number: CN202021282317.6U
Authority: CN
Inventors: 陈伟; 郑镇强; 佘京鹏; 李立鸿; 张学; 陈焕涛
Original assignee: SHANTOU HUAXING METALLURGICAL EQUIPMENT CO Ltd; Shantou Huaxing Raoping Copper Industry Co ltd
Current assignee: SHANTOU HUAXING METALLURGICAL EQUIPMENT CO Ltd; Shantou Huaxing Raoping Copper Industry Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-07-09
Anticipated expiration: 2030-07-02

Abstract

The utility model discloses a copper steel composite cooling plate for blast furnace, including front end and rear end, the front end with rear end grafting amalgamation reciprocal anchorage becomes sealed cavity, the cavity separates into first water cavity, second water cavity and third water cavity through first barrier rib and second barrier rib at least, first water cavity with the second water cavity switches on relatively, the second water cavity with third water cavity is kept apart relatively, the rear end including the end body and fix in the end body and to the thin pipe of intaking that the front end extends is with the thin pipe of exchange. The utility model discloses a compound cooling plate of copper steel for blast furnace adopts the concatenation of front end and rear end to insert the mode of closing, improves the inside quality of cooling plate front end, adopts built-in thin pipe of intaking and the thin pipe of exchange, makes the circulation direction of the cooling water in the cavity more multidirectional, and the distance of circulation is longer, improves holistic heat exchange effect.

Description

Copper steel composite cooling plate for blast furnace

Technical Field

The utility model belongs to the technical field of furnace body cooling arrangement for the blast furnace, specifically speaking relates to a copper steel composite cooling plate for blast furnace.

Background

The cooling plate is used as a main blast furnace cooling device and is arranged in a blast furnace, particularly in the position of the furnace waist of the blast furnace. The basic principle of the operation of the cooling plate is to cool the refractory brick lining by spot cooling and keep the refractory brick lining always at a certain thickness, and then protect the blast furnace shell by the refractory brick lining. Therefore, the better the cooling effect of the cooling plate on the refractory brick lining is, the more effectively the service life of the refractory brick lining can be prolonged, and the longer the service life of the blast furnace is influenced.

At present, cooling plates used by blast furnaces at home and abroad are mostly formed by adopting a conventional pure copper casting process. Due to the characteristics of serious pure copper liquid air suction and large shrinkage rate, the quality of the front end of the cooling plate with the thin-wall multi-cavity structure within the range of 300mm is difficult to meet the X-ray flaw detection inspection of the lowest II grade or more in ASTME 272-75. The quality of the front end of the cooling plate does not reach the standard, and the heat exchange and the service life of the front end of the cooling plate are directly and seriously affected by the defects of internal air holes, impurities, looseness, cracks and the like, so that the service life and the damping down frequency of the blast furnace are finally reduced.

SUMMERY OF THE UTILITY MODEL

The invention aims to solve the technical problem of providing the copper-steel composite cooling plate for the blast furnace, which has low production cost and high heat exchange effect.

The technical scheme for solving the technical problems comprises the following steps:

a copper-steel composite cooling plate for a blast furnace comprises a front end and a rear end, wherein the front end and the rear end are spliced and fixed to each other to form a sealed cavity, the cavity is divided into a first water cavity, a second water cavity and a third water cavity at least through a first isolation rib and a second isolation rib, the first water cavity is communicated with the second water cavity, the second water cavity is isolated from the third water cavity, the rear end comprises an end body, and a thin water inlet pipe and a thin exchange pipe which are fixed in the end body and extend towards the front end, the thin water inlet pipe is located in the first water cavity and covers a water inlet formed in the end body, the thin exchange pipe is used for communicating the second water cavity with the third water cavity, and a water outlet formed in the end body is connected with the third water cavity.

Specifically, the rear end further comprises a fixing rib and a supporting rib, the fixing rib and the supporting rib are welded in the end body, the fixing rib is spliced with the first isolating rib and isolated from the inner bottom surface of the end body, the supporting rib is spliced with the second isolating rib and welded with the inner bottom surface of the end body in a closed mode, and a fixing hole for the thin exchange pipe to penetrate through is formed in the supporting rib.

Specifically, the end body includes diapire and steel bushing, the both ends of steel bushing respectively with the diapire, the front end is coincide the welding, the water inlet with the delivery port all set up with on the diapire, the thin pipe of intaking with the equal welded fastening of thin pipe of exchange is in on the diapire, the both sides welding of fixed rib is in on the steel bushing, the both ends welding of supporting the rib is in on the steel bushing just the rear end welding of supporting the rib is in on the diapire.

Specifically, the thin exchange pipe comprises a fixed pipe, a connecting pipe and an extension pipe, the fixed pipe is located in the second water cavity, the extension pipe is located in the third water cavity, and the connecting pipe penetrates through the support rib and is connected with the fixed pipe and the extension pipe in a penetrating manner.

Specifically, the first barrier rib and the fixing rib are welded and fixed to each other, and the second barrier rib and the support rib are welded and fixed to each other.

Preferably, the rear end is made of steel, and the front end is made of copper.

Specifically, the front end is formed by casting or by hot extrusion and hot insert.

Specifically, the rear end is located the delivery port with the outside of water inlet is equipped with inlet outlet dysmorphism piece respectively, inlet outlet dysmorphism piece welded fastening is in the rear end afterbody.

Preferably, the rear end is located the fixed lug that has welded of the intermediate position of inlet outlet dysmorphism piece.

Specifically, the thin water inlet pipe and the thin exchange pipe are located in the middle of the first water cavity, the second water cavity and the third water cavity and separated from the inner surface of the cavity.

The utility model discloses following beneficial effect has: the splicing and inserting mode of the front end and the rear end is adopted, the internal quality of the front end of the cooling plate is improved, the built-in water inlet thin pipe and the built-in exchange thin pipe are adopted, the circulation direction of cooling water in the cavity is more multidirectional, the circulation distance is longer, the integral heat exchange effect is improved, the front end adopts a pure copper hot extrusion molding process, the production period and the production cost can be greatly reduced, the qualification rate is high, the rear end material is replaced by copper, the purchase cost is greatly reduced, and the equipment investment is reduced.

Drawings

Fig. 1 is a schematic view of an overall cross-sectional structure of an embodiment of the present invention.

Fig. 2 is a schematic sectional view of the rear end in the embodiment of the present invention.

Fig. 3 is a schematic view of an internal direct-viewing structure of the rear end in the embodiment of the present invention.

Fig. 4 is a schematic cross-sectional structure diagram of the front end in the embodiment of the present invention.

The reference numbers in the figures have the following meanings:

1 inlet outlet dysmorphism piece, 2 lugs, 3 diapalls, 4 water inlets, 5 delivery ports, 6 steel casings, 7 thin pipes of intaking, 8 front ends, 9 first water cavities, 10 fixed ribs, 11 first barrier ribs, 12 second water cavities, 13 fixed pipes, 14 connecting pipes, 15 extension pipes, 16 support ribs, 17 second barrier ribs, 18 third water cavities.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

Example (b):

the copper steel composite cooling plate for the blast furnace of the embodiment of the utility model is shown in figures 1-4, which comprises a front end 8 and a rear end, the front end 8 and the rear end are spliced and fixed with each other to form a sealed cavity, the cavity is divided into a first water cavity 9, a second water cavity 12 and a third water cavity 18 at least through a first isolation rib 11 and a second isolation rib 17, the first water cavity 9 is communicated with the second water cavity 12 relatively, the second water cavity 12 is isolated from the third water cavity 18 relatively, the rear end comprises an end body, a thin water inlet pipe 7 and a thin exchange pipe which are fixed in the end body and extend towards the front end 8, the water inlet thin pipe 7 is positioned in the first water cavity 9 and covers the water inlet 4 arranged on the end body, the exchange thin pipe is used for communicating the second water cavity 12 with the third water cavity 18, and a water outlet 5 formed in the end body is connected with the third water cavity 18. Through the mutual cooperation of the first water cavity 9, the second water cavity 12, the third water cavity 18 and the thin water inlet pipe 7 and the thin exchange pipe, the flowing direction of cooling water firstly flows into the first water cavity 9 through the thin exchange pipe, then the whole first water cavity 9 is rotated, the cooling water flows into the second water cavity 12, then the cooling water filled in the second water cavity 12 is transmitted to the third water cavity 18 through the thin exchange pipe, finally the cooling water flows to the water outlet 5 from the third water cavity 18, a circulation is completed, through the mutual cooperation of the thin water inlet pipe 7 and the thin exchange pipe, the flowing direction of the cooling water in the cavity is strengthened, and more circulation contact time is provided with the front end 8, so that the cooling capacity of the cooling water is fully utilized, and the heat exchange efficiency is improved. Preferably, the material of rear end is the steel, the material of front end 8 is copper, and front end 8 adopts pure copper hot extrusion molding technology, reduction production cycle and manufacturing cost that can several big, and the qualification rate is high, and the copper casting is discharged gas smoothly and shrink and is hindered for a short time in the casting forming process, and the inside gas pocket of foundry goods, inclusion, loose, crack defect obviously reduce, can show 8 inside qualities of improvement quality cooling plate front end, satisfy minimum above II level X-ray flaw detection requirements in ASTM E272-75, improve 8 heat exchange efficiency of front end simultaneously, the rear end is changed the material into copper, reduces purchasing cost, reduces equipment investment.

Specifically, the rear end further includes a fixing rib 10 and a supporting rib 16, the fixing rib 10 and the supporting rib 16 are welded in the end body, the fixing rib 10 is spliced with the first isolation rib 11 and isolated from the inner bottom surface of the end body, the supporting rib 16 is spliced with the second isolation rib 17 and welded to the inner bottom surface of the end body in a closed manner, and the supporting rib 16 is provided with a fixing hole for the exchange thin pipe to pass through. The fixing ribs 10 are mainly used to reduce the communication holes between the first water chamber 9 and the second water chamber 12, thereby prolonging the time of the cooling water in the first water chamber 9, and also increasing the flow rate of the cooling water rushing into the second water chamber 12, thereby improving the heat exchange efficiency. The support ribs 16 are used for isolating the second water cavity 12 from the third water cavity 18, and supporting the alternating current thin pipe, so that the alternating current thin pipe extending into the third water cavity 18 can be stably fixed at the central position of the third water cavity 18, a water flow flowing space is reserved on the periphery of the alternating current thin pipe, contact between cooling water and the front end 8 is guaranteed, and heat exchange efficiency is improved.

Specifically, the end body comprises a bottom wall 3 and a steel sleeve 6, two ends of the steel sleeve 6 are welded with the bottom wall 3 and the front end 8 in a matched mode respectively, the water inlet 4 and the water outlet 5 are arranged on the bottom wall 3, the water inlet thin pipe 7 and the exchange thin pipe are welded and fixed on the bottom wall 3, two sides of the fixing rib 10 are welded on the steel sleeve 6, two ends of the supporting rib 16 are welded on the steel sleeve 6, and the rear end of the supporting rib 16 is welded on the bottom wall 3. The rear end adopts the end body that diapire 3 and steel bushing 6 combination formed, can effectively reduce the production degree of difficulty to surely weld the back through argon arc, the effect is more stable, also makes the installation of the thin pipe of intaking 7 and exchanging thin pipe more light simple and easy simultaneously. Specifically, the first barrier rib 11 and the fixing rib 10 are welded and fixed to each other, and the second barrier rib 17 and the support rib 16 are welded and fixed to each other. The rear end is integrally welded and fixed by argon arc welding, and the front end 8 and the rear end are connected by argon arc welding, so that the structure is integrated to form a sealed inner cavity.

Specifically, the thin exchange pipe includes a fixed pipe 13, a connecting pipe 14 and an extension pipe 15, the fixed pipe 13 is located in the second water cavity 12, the extension pipe 15 is located in the third water cavity 18, and the connecting pipe 14 penetrates through the support rib 16 and is connected to and penetrates through the fixed pipe 13 and the extension pipe 15. The cooling water in the second water cavity 12 firstly enters the fixed pipe 13 and then flows through the connecting pipe 14 to reach the extension pipe 15, and finally enters the third water cavity 18 to form a cooling water channel from the second water cavity 12 to the third water cavity 18. Specifically, the thin water inlet pipe 7 and the thin exchange pipe are positioned in the middle of the first water cavity 9, the second water cavity 12 and the third water cavity 18 and are separated from the inner surface of the cavity. And the outer surfaces of the water inlet thin pipe 7 and the exchange thin pipe are not in contact with the inner surface of the cavity, and water channels for cooling water to flow through are reserved, so that the coverage of cooling water circulation is ensured to be maximum.

Specifically, the front end 8 is formed by casting or by hot extrusion and hot insert. The front end 8 can also be formed by hot extrusion by adopting a TU1 or TU2 pure copper ingot with the copper content more than or equal to 99.95 percent. The casting defects of air holes, inclusion, looseness and the like in the front end can be avoided, the electric conductivity can be more than or equal to 100% IACS, and the heat exchange efficiency of the front end 8 is greatly improved; certainly, the front end 8 adopts a pure copper hot extrusion molding process, the qualification rate of finished products can be more than or equal to 99.5 percent on the premise of ensuring the quality of the front end 8, and the production period and the production cost are greatly reduced.

Specifically, the rear end is located the outside of delivery port 5 with water inlet 4 is equipped with inlet outlet dysmorphism piece 1 respectively, inlet outlet dysmorphism piece 1 welded fastening is in the rear end afterbody. The special-shaped water inlet and outlet part 1 is mainly used for matching the opened oval water outlet 5 and the opened water inlet 4, enabling the water inlet 4 to be completely accommodated inside the thin water inlet pipe 7 and ensuring the flow direction of cooling water. The special-shaped part 1 of the water inlet and outlet is mainly used for being communicated with an external cooling water circulation pipeline.

Preferably, the rear end is located in the middle of the water inlet and outlet special-shaped piece 1, and a lifting lug 2 is fixedly welded to the rear end. The cooling plate can be conveniently taken out, put in and fixed under the action of the lifting lugs 2.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a copper steel composite cooling plate for blast furnace, includes front end (8) and rear end, front end (8) with the rear end is pegged graft the amalgamation and is reciprocal anchorage and become sealed cavity, its characterized in that: the water-saving device is characterized in that the cavity is divided into a first water cavity (9), a second water cavity (12) and a third water cavity (18) at least through a first isolation rib (11) and a second isolation rib (17), the first water cavity (9) and the second water cavity (12) are communicated relatively, the second water cavity (12) and the third water cavity (18) are isolated relatively, the rear end comprises an end body, and a water inlet thin pipe (7) and an exchange thin pipe which are fixed in the end body and extend towards the front end (8), the water inlet thin pipe (7) is located in the first water cavity (9) and covers a water inlet (4) formed in the end body, the exchange thin pipe is used for communicating the second water cavity (12) and the third water cavity (18), and a water outlet (5) formed in the end body is connected with the third water cavity (18).

2. The copper-steel composite cooling plate for the blast furnace according to claim 1, characterized in that: the rear end of the thin pipe exchanger is characterized by further comprising a fixing rib (10) and a supporting rib (16), the fixing rib (10) and the supporting rib (16) are welded in the end body, the fixing rib (10) and the first isolating rib (11) are spliced and isolated from the inner bottom surface of the end body, the supporting rib (16) and the second isolating rib (17) are spliced and welded with the inner bottom surface of the end body in a closed mode, and a fixing hole for the thin pipe exchanger to penetrate through is formed in the supporting rib (16).

3. The copper-steel composite cooling plate for the blast furnace according to claim 2, characterized in that: the end body comprises a bottom wall (3) and a steel sleeve (6), the two ends of the steel sleeve (6) are respectively welded with the bottom wall (3) and the front end (8) in a matched mode, a water inlet (4) and a water outlet (5) are formed in the bottom wall (3), a water inlet thin pipe (7) and an exchange thin pipe are welded and fixed on the bottom wall (3), the two sides of a fixing rib (10) are welded on the steel sleeve (6), the two ends of a supporting rib (16) are welded on the steel sleeve (6), and the rear end of the supporting rib (16) is welded on the bottom wall (3).

4. The copper-steel composite cooling plate for the blast furnace according to claim 3, wherein: the thin exchange pipe comprises a fixed pipe (13), a connecting pipe (14) and an extension pipe (15), the fixed pipe (13) is located in the second water cavity (12), the extension pipe (15) is located in the third water cavity (18), and the connecting pipe (14) penetrates through the support rib (16) and is connected with the fixed pipe (13) and the extension pipe (15) in a penetrating mode.

5. The copper-steel composite cooling plate for the blast furnace according to claim 3, wherein: the first isolating rib (11) and the fixing rib (10) are welded and fixed with each other, and the second isolating rib (17) and the supporting rib (16) are welded and fixed with each other.

6. The copper-steel composite cooling plate for blast furnace according to any one of claims 1 to 5, characterized in that: the rear end is made of steel, and the front end (8) is made of copper.

7. The copper-steel composite cooling plate for the blast furnace according to claim 6, wherein: the front end (8) is formed by casting or by hot extrusion and hot insert.

8. The copper-steel composite cooling plate for the blast furnace according to claim 6, wherein: the rear end is located the outside of delivery port (5) with water inlet (4) is equipped with inlet outlet dysmorphism piece (1) respectively, inlet outlet dysmorphism piece (1) welded fastening is in the rear end afterbody.

9. The copper-steel composite cooling plate for the blast furnace according to claim 8, wherein: the rear end is positioned in the middle of the water inlet and outlet special-shaped piece (1), and a lifting lug (2) is fixedly welded at the middle.

10. The copper-steel composite cooling plate for the blast furnace according to claim 6, wherein: the thin water inlet pipe (7) and the thin exchange pipe are positioned in the middle of the first water cavity (9), the second water cavity (12) and the third water cavity (18) and are separated from the inner surface of the cavity.