CN216039739U

CN216039739U - Novel accurate controllable equipment of belted steel cooling speed

Info

Publication number: CN216039739U
Application number: CN202122186345.9U
Authority: CN
Inventors: 雷宇; 陈芳; 尉冬
Original assignee: Sunny Strip Processing Technology Engineering Co ltd
Current assignee: Sunny Strip Processing Technology Engineering Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-03-15
Anticipated expiration: 2031-09-10

Abstract

The utility model discloses a novel band steel cooling speed accurate controllable device, which comprises a heat exchanger, an electric heater, a circulating fan, an air supply pipe, an adjusting valve and a cooling section furnace shell, wherein the air supply pipe is arranged on one side inside the cooling section furnace shell in a penetrating manner, the upper end of the air supply pipe is arranged outside the cooling section furnace shell, and the upper end of the air supply pipe is attached to the upper surface of the cooling section furnace shell. On the other hand, the problem of temperature nonuniformity caused by heating of the electric radiant tube is solved.

Description

Novel accurate controllable equipment of belted steel cooling speed

Technical Field

The utility model belongs to the technical field of strip steel production, and particularly relates to novel equipment capable of accurately controlling the cooling speed of strip steel.

Background

The strip steel is a narrow and long steel plate produced by various steel rolling enterprises in order to meet the requirements of different industrial departments on industrial production of various types of metal or mechanical products. The strip steel is also called steel strip, the width is within 1300mm, and the length is slightly different according to the size of each roll. The strip steel is generally supplied in a coiled manner, and has the advantages of high dimensional precision, good surface quality, convenience in processing, material saving and the like. In the current continuous production line of strip steel, the cooling section generally adopts a mode of circularly spraying protective gas to cool the strip steel. Protective gas (nitrogen and hydrogen) in the cooling section furnace shell is pumped out by a fan, is subjected to heat exchange and cooling by a water feeding heat exchanger of an air return channel, is introduced into a spray box in the furnace through an air supply channel, and is sprayed to the upper surface and the lower surface of the strip steel from uniformly distributed spray holes on the spray box so as to achieve the purpose of cooling the strip steel.

However, the capacity of the cooling section is designed according to the large load when thick plates are produced, so that when thin plates are produced, in order to prevent the strip steel from being cooled to be too low in temperature, the electric radiation tube is arranged at the bottom of the cooling section to heat the strip steel, the electric radiation tube below the lower surface of the strip steel used in the cooling section is used for heating to keep the temperature, the distribution of the temperature field in the furnace of the cooling section is uneven, the temperature of the upper surface and the lower surface of the strip steel is uneven, the strip steel is cooled by circulating protective gas, the electric radiation tube heats the strip steel, when the electric radiation tube and the strip steel are simultaneously acted on the strip steel, the cooling speed of the strip steel is difficult to be accurately controlled, and the cooling effect can be roughly judged only by detecting the furnace temperature through the thermocouple of the cooling section. Products having precise process requirements for cooling rate are difficult to meet, resulting in reduced performance or failure of the products, and various plate shape problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the existing defects and provides novel equipment with accurate and controllable strip steel cooling speed so as to solve the problem of uneven distribution of the temperature field in the traditional cooling section furnace in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a novel accurate controllable equipment of belted steel cooling rate, includes heat exchanger, electric heater, circulating fan, blast pipe, governing valve and cooling zone stove outer covering, the inside one side of cooling zone stove outer covering is run through and is provided with the blast pipe, the blast pipe upper end sets up in the cooling zone stove outer covering outside, just blast pipe upper end laminating and cooling zone stove outer covering upper surface, thermoelectric lotus root hole has been seted up to blast pipe one side, just blast pipe opposite side surface is provided with the thermocouple, the inboard surface connection of blast pipe has the return air duct, the inboard both ends of return air duct set up inside the cooling zone stove outer covering, return air duct one side is provided with two governing valves, two the governing valve is in adjacent position.

Preferably, the outer side surface of the blast pipe is provided with a circulating fan, and the circulating fan is arranged on one side of the upper surface of the cooling section furnace shell.

Preferably, an upper spray box and a lower spray box are respectively arranged on the upper side and the lower side in the cooling section furnace shell, and the upper spray box and the lower spray box are in opposite directions.

Preferably, a plurality of spray holes are formed in the adjacent side surfaces of the upper spray box and the lower spray box, and the spray holes are uniformly distributed on the side edges of the upper spray box and the lower spray box.

Compared with the prior art, the utility model provides novel equipment for accurately controlling the cooling speed of strip steel, which has the following beneficial effects:

the utility model controls the air quantity by the adjusting valve through the arranged blast pipe and the thermocouple arranged in the blast pipe, and adjusts the valves of the two return air pipes through the feedback of the temperature of the thermocouple on the blast pipe, thereby accurately controlling the air supply temperature of the blast pipe, finally changing the mixing proportion of cold air and hot air, and controlling the temperature of mixed protective air, thus realizing the accurate control of the temperature of the air blown to the surface of the strip steel, on the one hand, realizing the accurate control of the cooling speed of the strip steel at the cooling section by the mode, and on the other hand, solving the temperature nonuniformity caused by the heating of the electric radiant tube.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model without limiting the utility model in which:

FIG. 1 is a front view of a novel apparatus for accurately controlling the cooling speed of strip steel according to the present invention;

FIG. 2 is a side view of the novel apparatus for accurately controlling the cooling speed of strip steel according to the present invention;

FIG. 3 is a front sectional view of the novel device for accurately controlling the cooling speed of the strip steel, which is provided by the utility model;

in the figure: 1. a heat exchanger; 2. an electric heater; 3. a circulating fan; 4. a return air duct; 5. an air supply pipe; 6. adjusting a valve; 7. cooling the section furnace shell; 8. an upper spray box; 9. a lower spray box; 10. and (6) spraying the holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides the following technical solutions: a novel band steel cooling speed accurate controllable device comprises a heat exchanger 1, an electric heater 2, a circulating fan 3, an air supply pipe 5, a regulating valve 6 and a cooling section furnace shell 7, wherein the air supply pipe 5 is arranged on one side inside the cooling section furnace shell 7 in a penetrating manner, the upper end of the air supply pipe 5 is arranged outside the cooling section furnace shell 7, the upper end of the air supply pipe 5 is attached to the upper surface of the cooling section furnace shell 7, a thermoelectric coupling hole is formed in one side of the air supply pipe 5, a thermocouple is arranged on the other side surface of the air supply pipe 5, an air return pipe 4 is connected to the inner side surface of the air supply pipe 5, two inner side ends of the air return pipe 4 are arranged inside the cooling section furnace shell 7, two regulating valves 6 are arranged on one side of the air return pipe 4, the two regulating valves 6 are arranged at adjacent positions, in the process that protective gas is introduced into the air supply pipe 5, the temperature feedback of the thermocouple on the air supply pipe 5 is passed through, the valves of the two air return pipes 4 are regulated, so that the air volume is controlled through the regulating valves 6, the method is used for accurately controlling the air supply temperature of the air supply pipe 5, finally changing the mixing proportion of cold air and hot air, and controlling the air temperature of the mixed protective air, so that the accurate control of the air temperature blown to the surface of the strip steel is realized, the accurate control of the cooling speed of the strip steel in the cooling section is realized through the method, and the temperature nonuniformity caused by heating of the electric radiant tube is solved.

In the present invention, it is preferable that the circulating fan 3 is provided on the outer surface of the blast pipe 5, and the circulating fan 3 is provided on the upper surface side of the cooling zone casing 7.

In the utility model, preferably, an upper spray box 8 and a lower spray box 9 are respectively arranged at the upper side and the lower side in the cooling section furnace shell 7, the upper spray box 8 and the lower spray box 9 are in opposite directions, and the protective gas cooled by the original return air duct and the protective gas heated by the newly added return air duct are adjusted by respective adjusting valves 6 and are mixed in a certain proportion, and then are introduced into the upper spray box 8 and the lower spray box 9 from an air supply pipe through the circulating fan 3.

In the present invention, preferably, a plurality of spray holes 10 are formed in adjacent side surfaces of the upper spray box 8 and the lower spray box 9, the plurality of spray holes 10 are uniformly distributed at the sides of the upper spray box 8 and the lower spray box 9, and the spray holes 10 corresponding to the upper spray box 8 and the lower spray box 9 are used for uniformly spraying the spray on the upper and lower surfaces of the strip steel.

The working principle and the using process of the utility model are as follows: when in use, the protective gas cooled by the original air return channel and the protective gas heated by the newly added air return channel are regulated by respective regulating valves 6 to be mixed in a certain proportion, then are introduced into the upper spray box 8 and the lower spray box 9 from the blast pipe through the circulating fan 3, and are uniformly sprayed to the upper surface and the lower surface of the strip steel through the spray holes 10 corresponding to the upper spray box 8 and the lower spray box 9, in the process that the protective gas is introduced into the blast pipe 5, the temperature is fed back through the thermocouples on the blast pipe 5, the valves of the two air return pipes 4 are regulated, so that the air volume is controlled through the regulating valves 6 to accurately control the blast temperature of the blast pipe 5, the mixing proportion of cold air and hot air is finally changed to control the air temperature of the mixed protective gas, the accurate control of the air temperature sprayed to the surface of the strip steel is realized, and the accurate control of the strip steel cooling speed of a cooling section is realized through the mode on the one hand, on the other hand, the problem of temperature nonuniformity caused by heating of the electric radiant tube is solved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel accurate controllable equipment of belted steel cooling rate, includes heat exchanger (1), electric heater (2), circulating fan (3), blast pipe (5), governing valve (6) and cooling zone stove outer covering (7), its characterized in that: inside one side of cooling zone stove outer covering (7) runs through and is provided with blast pipe (5), blast pipe (5) upper end sets up in cooling zone stove outer covering (7) outsidely, just blast pipe (5) upper end laminating and cooling zone stove outer covering (7) upper surface, thermoelectric coupling hole has been seted up to blast pipe (5) one side, just blast pipe (5) opposite side surface is provided with the thermocouple, blast pipe (5) inboard surface is connected with return air pipe (4), return air pipe (4) inboard both ends set up inside cooling zone stove outer covering (7), return air pipe (4) one side is provided with two governing valves (6), two governing valve (6) are in adjacent position.

2. The novel equipment for accurately controlling the cooling speed of the strip steel as claimed in claim 1, is characterized in that: and a circulating fan (3) is arranged on the outer side surface of the air supply pipe (5), and the circulating fan (3) is arranged on one side of the upper surface of the cooling section furnace shell (7).

3. The novel equipment for accurately controlling the cooling speed of the strip steel as claimed in claim 1, is characterized in that: an upper spray box (8) and a lower spray box (9) are respectively arranged on the upper side and the lower side of the interior of the cooling section furnace shell (7), and the upper spray box (8) and the lower spray box (9) are opposite to each other.

4. The novel equipment for accurately controlling the cooling speed of the strip steel as claimed in claim 3, is characterized in that: the side surfaces of the upper spray box (8) and the lower spray box (9) adjacent to each other are provided with a plurality of spray holes (10), and the spray holes (10) are uniformly distributed on the sides of the upper spray box (8) and the lower spray box (9).