KR100685047B1 - Cooling apparatus for supplying air and mist to wire rods - Google Patents

Abstract

A cooling apparatus for supplying air and water to a wire rod coil is provided to greatly improve cooling capability of the wire rod coil by supplying ultra-fine water vapor to blowers for cooling the wire rod coil, thereby enabling uniformized ultra-fine water vapor and blown air to contact with the wire rod coil. A cooling apparatus(1) for supplying air and water to a wire rod coil comprises: a roller transfer part(10) for transferring a wire rod(12) that is placed thereon; blowers(30) for blowing pressurized air to the roller transfer part from a lower side of the roller transfer part; a plurality of air induction pipes(40) for transmitting blown air from the blowers toward the roller transfer part; and cooling water supply parts(50) respectively mounted in the middle of the air induction pipes to supply cooling water into the air induction pipes so as to cool the wire rod coil by simultaneously spraying blown air and water onto the wire rod coil, wherein the cooling water supply parts comprise: a plurality of water evaporation parts fixed into the air induction pipes; a level control part(70) having a sensor for supplying water to the water evaporation part and controlling a water level; and a pipe part having a valve(86) formed on a cooling water supply pipe such that the valve automatically opens or closes cooling water supplied to the level control part by the sensor.

Description

Cooling Apparatus For Supplying Air and Mist To Wire Rods}

1 is a block diagram showing an entire wire rod process according to the prior art.

2 is a cross-sectional view showing a configuration in which a cooling device is arranged in a wire rod process according to the prior art.

3 is a cross-sectional view of the wire coil blowing and water cooling apparatus according to the present invention disposed in the wire rod process.

4 is a cross-sectional view of the blowing and moisture cooling device for the wire rod according to the present invention mounted on the air induction pipe of the wire rod facility.

Figure 5 is a cross-sectional view showing the internal structure of the blowing and moisture cooling device for a wire coil according to the present invention.

6 is a cross-sectional view showing the operation of the blowing coil and the water cooling device for the wire coil according to the present invention.

7 is a cross-sectional view showing a modified structure of the blowing and moisture cooling device for the wire coil according to the present invention.

8 is a cross-sectional view showing another modified structure of the blowing and moisture cooling device for the wire coil according to the present invention.

       <Description of Symbols for Main Parts of Drawings>

1 .... Blowing and moisture cooling device for wire rod coil according to the present invention

10 .... roller feed 12 .... wire rod

30 .... Blowing Equipment 32 .... Blowing Motor

40 .... air guiding pipe 50 .... cooling water supply

52 .... Fixing member 60 .... Moisture evaporation part

62 .... Casing 64a, 64b, 64c .... High Pressure Water Nozzle

66 .... evaporation wick 67 .... high pressure water pump

70,98 .... Level control 72 .... Coolant source

74 .... Chilled water supply line 76 .... Chamber

80 .... Sensor 86 .... Automatic shutoff valve

92 .... The neck 94 .... Venturi coffin

201 .... Hot Wire Coil 210 .... Furnace

220,221,222 .... Wire rod rolling process 230 .... Water cooling stand

240 .... Winder 260 .... Roller Table Feeder

261 .... Roller Table 300 .... Stallmore Cooling System

310 .... Blower 330 .... Air Vent

L1 .... coolant lower limit L2 .... coolant upper limit

The present invention relates to a blower cooling apparatus for heat-treating a cylindrical ring-shaped hot wire coil at the rear end of a wire rod winding process, and more specifically, ultra-thin particles by supplying water vapor moisture of ultra fine particles to a blower facility for cooling the wire coil. The present invention relates to an air blowing and moisture cooling apparatus for wire rod coils, in which fine water vapor and air are in contact with the wire coils to greatly improve the cooling capacity of the wire coils.

In general, the wire rod refers to a round bar which is a raw material of a material for manufacturing various steel wires by drawing processing, and is manufactured in a size of 5.5 mm to 20 mm in diameter by hot wire rolling and then integrated into a circular ring shape. Commercially available in the form of wire rods.

When the wire rod is manufactured in the wire rod processing line, there are various ways to cool the wire rod, but the wind from the blower is blown to the hot wire coil 201 transferred through the roller table feeder 260 as shown in FIG. Stallmore cooling facility 300 for contacting and cooling this large amount is commonly used, most commonly used in most wire rod mills.

In the wire coil cooling of the wire rod processing line as described above, the billet material having an initial cross section is squarely discharged from the heating furnace 210, and these are rounded through a wire rod rolling step (220) (221) (222). And rolled into a linear wire rod, and passed through a water cooling stand 230 that is a quenching system, and then supplied the hot rolled wire to a laying head, a winding machine 240, to form a cylindrical ring form a straight wire rod. The wire rod 201 is provided to deform into a coil shape.

The conventional Stelmore cooling facility 300 for cooling the wire rods having undergone such a process transfers the wire rod 201 dropped to the roller table transfer apparatus 260 toward the accumulator 270, and thus, the roller table transfer apparatus 260. Air is forcibly blown from the blower facility 310 installed below the roller table 261 to forcibly cool the wire coil 201 transferred on the roller table 261 to obtain a desired heat treatment structure of the wire coil 201.

As shown in FIG. 2, the Stelmore cooling facility 300 has a blowing distribution side 242 toward the bottom of the roller table 261 of the roller table feeder 260 to which the wire coil 201 is transferred. Are arranged, and on the other hand, the blowing facilities 310 for producing the blowing air are provided to drive the blowing facilities 310 by the driving motor 320.

An air vent pipe 330 through which air to be blown flows is disposed between the blower facility 310 and the distribution valve 242 in communication with each other.

In addition, the conventional Stelmore cooling apparatus 300 as described above has a limitation in the cooling capacity of the wire rod coil 201 because it is a cooling method using an air cooling medium of the blower facility 310, and thus, the wire rod coil 201 There is a limit in increasing the heat treatment tensile strength.

Therefore, conventionally, by placing the dry ice, which is a low temperature cooling medium, at the inlet of the blower 310 to lower the temperature of the blower air cooling medium, the wire rod 201 is cooled, thereby greatly increasing the tensile strength of the wire rod coil. There was a fatal problem that the heat treatment cost is increased due to the use of a large amount of dry ice in the suction port of the facility (310).

In addition, in order to improve the cooling capacity of the Stelmore cooling device 300, an air mist device (not shown) is disposed on the top of which the wire rod 201 coil proceeds to develop a device for cooling the blowing air and the double wire rod coil. However, such conventional devices must be provided with a separate air mist device, as well as a complex system such as a high pressure air and high pressure water supply system and an ultra fine mist injection nozzle.

Therefore, such a conventional device has a disadvantage in that its configuration is complicated and the investment cost is greatly increased, and in the ultra-fine mist nozzle, high-pressure cooling water is ejected to rapidly cool a part of the wire rod coil, so that the wire rod 201 is coiled. In part, there was a problem in that the variation in tensile strength was large.

The present invention is to solve the conventional problems as described above, the object is to supply the steam moisture of the ultra-fine particles to the blowing equipment for cooling the wire rod coillessly, the ultra-fine water vapor and blown air uniformized in contact with the wire rod coil The present invention provides an air blowing and moisture cooling device for wire rods to greatly improve the cooling capacity of the coil.

In addition, another object of the present invention is to significantly improve the cooling capacity and heat treatment capacity of the wire rod coil while the installation cost is low, it is possible to reduce the air flow amount according to the increase in the cooling capacity of the wire rod coil, the power consumption of the blower accordingly The present invention provides an air blowing and moisture cooling device for wire rods that can achieve savings.

In order to achieve the above object, the present invention provides a cooling device for cooling and heat-treating a hot wire coil in a wire rod rolling process,

A roller conveying unit which is moved on the wire rods;

A blowing device for pressurizing and supplying blown air from the lower side of the roller feeder;

A plurality of air guide pipes for transferring the blown air from the blower to the roller feeder; And

And a cooling water supply unit installed at each middle of the air induction pipe to supply water into the air induction pipe. The wire coil is configured to cool by spraying blowing air and moisture to the wire coil at the same time. Provides a blowing and moisture cooling device.

And the present invention preferably comprises a plurality of water evaporation unit is fixed to the inside of the air induction pipe cooling water supply; A level control unit having a sensor for supplying water to the water evaporation unit and adjusting a water level; And a piping unit having a valve for automatically opening and closing the cooling water supplied to the level adjusting unit by the sensor in the cooling water supply pipe.

In another aspect, the present invention preferably comprises a plurality of high-pressure water nozzle fixed to the inside of the air induction pipe; A high pressure water pump supplying cooling water to the high pressure water nozzle through a cooling water supply pipe; And a pipe part having a valve for automatically opening and closing the cooling water supply pipe in the cooling water supply pipe.

And the present invention is preferably a venturi tube is fixed to the inside of the air induction pipe, the cooling water supply, the cooling water nozzle is provided in the inner neck; A level control unit having a sensor for supplying water to the venturi tube and adjusting the water level; And a piping unit having a valve for automatically opening and closing the cooling water supplied to the level adjusting unit by the sensor in the cooling water supply pipe.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Blowing and moisture cooling apparatus 1 for the wire rod coil according to the present invention is to heat-treat the hot wire coil in the wire rod rolling process, as shown in FIG.

Blowing and moisture cooling device 1 for the wire rod coil according to the present invention has a roller conveying portion 10 that the wire rods are mounted on the top to move.

The roller transfer unit 10 is to transfer the wire rod 12 toward the integrator 270 from the wire winding machine 240 side, the wire rods 12 are moved on it.

And the present invention has a blowing facility 30 for supplying pressurized air blown from the lower side of the roller conveying section (10). The blower 30 includes conventional blowers, and operates the blower motor 32 to generate blown air.

In addition, the present invention has a plurality of air guide pipe (40) for delivering the blowing air from the blowing facility 30 to the roller transfer section 10 side.

The air induction pipes 40 are connected to the discharge side of the blower motors 32 provided in each blower to supply blown air generated from the blower motor 32 to a desired location, that is, the lower side of the roller transfer unit 10. It is made of a conventional duct (Duct) equipment, the distal end of the distribution pipe 42 is formed to be expanded so that the blowing air is evenly supplied to the roller conveying portion (10).

And the present invention includes a cooling water supply unit 50 is respectively mounted in the middle of the air induction pipe 40 to supply water into the air induction pipe 40.

The cooling water supply unit 50 is vertically elongated in the air induction pipe 40, as shown in Figure 4 and 5 is fixed to the inside of the air induction pipe 40 by the fixing member 52 , And has a plurality of water evaporators 60 fixed inside the air induction pipe 40.

As shown in FIG. 5, each of the water evaporators 60 is fixed with an evaporation wick 66 inside a casing 62 filled with cooling water, and the tip of the evaporation wick 66 is connected to the casing ( It protrudes from the casing 62 toward the upper side of 62, i.e., in the direction of blowing air.

In the water evaporation unit 60, water is always supplied to the tip of the evaporation wick 66 through the capillary phenomenon of the evaporation wick 66. Thus, the water supplied to the evaporation wick 66 is supplied to the blowing air. Is evaporated and incorporated into the water vapor state.

The cooling water supply unit 50 includes a level control unit 70 having a sensor 80 for supplying water to the water evaporation unit 60 and adjusting the water level.

The level control unit 70 includes a small chamber 76 in which the coolant is collected in an intermediate portion of the coolant supply pipe 74 connected to the casing 62 from the coolant source 72, and the chamber 76 The sensor 80 is mounted in the inside to detect the water level.

The sensor 80 generates an electrical signal if the water level contained in the chamber 76 is below a certain level, that is, a lower limit, and generates another electrical signal if the level is above a certain level, that is, an upper limit.

In the above, the upper limit corresponds to the upper limit of the cooling water in the casing 62, and the lower limit corresponds to the lower limit in which the cooling water can be absorbed through the capillary phenomenon through the evaporation wick 66 in the casing 62. Thus, if the level of coolant is located between the upper and lower limits of the sensor 80 located in the chamber 76, it maintains an appropriate water level in the casing 62 so that the coolant passes through the evaporation wick 66. It can be discharged to outside of).

The electrical signal from the sensor 80 is electrically connected to the valve 86 provided in the cooling water supply pipe 74 of the piping 82 described later.

Therefore, when the sensor 80 detects the lower limit level in the chamber 76, the sensor 80 opens the automatic opening / closing valve 86 to allow the coolant to flow through the chamber 76 and the casing 62. When the sensor 80 detects the upper limit level in the chamber 76, the automatic opening / closing valve 86 is closed to block the coolant supplied to the chamber 76 and the casing 62.

In the cooling water supply unit 50 as described above, a part of the evaporation wick 66 of the water evaporation unit 60 is exposed to the outer periphery of the casing 62 to be exposed to the air of the blower, and the evaporation wick 66 Some of the submerged in the cooling water inside the casing 62 of the water evaporation unit 60.

In addition, the evaporation wick 66 is configured to be stepped in a state in which the cross-sectional area of the evaporation wick 66 decreases toward the lower end thereof, so that the evaporation wick 66 evaporates according to the internal water height lower limit (L1) to the upper limit (L2) of the water evaporation unit 60. The wick 66 is submerged in water to generate an area difference.

The level control unit 70 is vertically mounted in the interior of the chamber 76 is provided with a sensor 80 for detecting from the lower limit (L1) to the upper limit (L2) of the water in the automatic water shutoff valve (86) The water level is to be adjusted by.

In addition, since the cooling water supply pipe 74 is interconnected between the water evaporator 60 and the level adjuster 70, the water evaporator depends on the water height lower limit L1 to the upper limit L2 of the level adjuster 70. The amount of water in the casing 62 is adjusted to the lower limit L1 to the upper limit L2.

The evaporation wick 66 of the water evaporation unit 60 is composed of a fiber that absorbs moisture well and evaporation wicks according to the head height lower limit (L1) to the upper limit (L2) of the water supply amount inside the water evaporation unit (60). Because the difference in the height 66 is submerged in the water occurs, the water absorption power of the evaporation wick 66 appears different, the evaporation wick 66 is composed of a number of fibrous wicks.

7 shows a modified structure of the cooling water supply unit 50 '.

The modified cooling water supply unit 50 ′ arranges the high pressure water nozzles 64a, 64b, and 64c inside the air induction pipe 40, and opens the coolant supply pipe 74 from the high pressure water pump 67. The cooling water supplied through the automatic control valve 69 is opened and closed to supply small water fine particles to the blowing air.

In such a structure, small water fine particles are mixed with the blowing air and supplied to the coil 12 of the wire rod 12 together with the blowing air.

8 shows another modified structure of the cooling water supply 50 ".

The modified cooling water supply unit 50 ″ has a venturi tube 94 provided with a cooling water nozzle 92a on an inner neck 92 inside the air induction pipe 40. The venturi tube 94 is provided. A level control unit 98 having a sensor 96 for supplying water to the water level and a valve 97 for automatically opening and closing the cooling water supplied to the level control unit 98 by the sensor 96. It consists of a piping part 99 provided in the cooling water supply pipe 74.

The blowing and moisture cooling device 1 for the wire rod coil according to the present invention configured as described above is driven by the motor 32 of the blowing facility 30 to produce blowing air.

Such blown air quickly flows to the distribution side 42 of the air induction pipe 40 extending to the lower side of the roller feeder 10 to which the wire rod 12 coil is transferred, and the flow rate of the blown air proceeds at a high speed. In the process, the evaporation wick 66 of the water evaporation unit 60 is in contact with the air flowing at high speed while being swung in the direction of air flow rate, and thus, the air flowing at high speed to the evaporation wick 66 is in high speed contact. As it collides, particles of water from the surface of the evaporation wick 66 are contained in the blowing air flowing and evaporated to ultra-fine particles.

Therefore, according to the present invention, the evaporation wick 66 in the cooling water supply unit 50 is desorbed or evaporated from its surface by contact with air flowing at a high flow rate, and is immersed in the water inside the water evaporator 60 to evaporate. The water absorption density difference between the wick 66 and the surface evaporation wick 66 exposed to the air is generated, and the capillary action of water is made from the evaporation wick 66 submerged in the water to the evaporation wick 66 exposed to the air and thus the evaporation wick The evaporation movement of water takes place via 66.

When the water moves to the evaporation wick 66 and the water is replenished on the surface of the evaporation wick 66, the moisture absorbed by the evaporation wick 66 makes a lot of high-speed contact collisions with the flowing air flowing at high speed. Water evaporates continuously from the surface to the ultrafine state.

Therefore, when the desorption evaporation of water from the evaporation wick 66 of the water evaporator 60 to the air produced from the blower, the blower air is in contact with the surface of the coil of the high temperature wire 12 with a high water content rate. .

Therefore, the coil of the wire rod 12 is accompanied by the surface cooling action of the air and the latent heat of vaporization of water at the same time, the cooling ability of the wire rod 12 coil is greatly improved, the heat treatment of the coil of the wire rod 12 according to the increase of the cooling capacity of the wire rod coil Tensile strength can be increased.

On the other hand, the blowing and water cooling device for the wire coil 1 according to the present invention is the water evaporation in the evaporation wick 66 of the water evaporation unit 60 is continuously evaporated to reduce the water level in the casing 62 when the water level of the cooling water supply pipe Water is replenished by 74, which means that the casing 62 water level lower limit L1 to upper limit L2 of the water evaporation unit 60 and the water level lower limit L1 to the chamber 76 of the level control unit 70 are provided. The upper limit L2 is arranged in the same height line so that the water level of the water evaporation unit 60 and the water level of the level control unit 70 are always horizontal.

Therefore, if you want to reduce the amount of water evaporation in the casing 62 of the water evaporation unit 60, the water level of the chamber 76 of the level control unit 70 is reduced by using the sensor 80 and the control valve 86 The water level in the evaporator 60 is also reduced, so that the area where the evaporation wick 66 is submerged in the water is reduced.

Therefore, since the area for absorbing water is reduced and the height difference between the evaporation wicks 66 exposed to the outside of the water evaporation unit 60 is generated from the point where the evaporation wick 66 is submerged in the water, the evaporation wick 66 is generated. The water capillary action of the water is reduced so that the amount of evaporation of water from the evaporation wick 66 is reduced, and thus the amount of evaporation of the water evaporation unit 60 can be adjusted.

In addition, the cooling water supply unit as described above may supply the cooling water to the blowing air side through the modified structure shown in FIG.

That is, the cooling water supply unit 50 ′ shown in FIG. 7 arranges the high pressure water nozzles 64a, 64b, and 64c inside the air induction pipe 40, and the high pressure water pump 67 and the control valve ( 69 to supply small water fine particles to the blowing air, and flows at a high speed when the high pressure water is injected into the ultrafine particles from the high pressure water nozzles 64a, 64b, and 64c inside the air induction pipe 40. While mixing with the blowing air, the fine particles of water particles and water vapor are mixed during the blowing to cool the wire coil.

In addition, the cooling water supply unit of the present invention can supply the cooling water to the blowing air side through the modified structure shown in FIG.

That is, in the cooling water supply unit 50 ″ as shown in FIG. 8, the venturi tube 94 is disposed inside the air induction tube 40, and the vent tube is formed using the sensor 96 and the water level control valve 97. When cooling water is supplied to the inner nozzle 92 of the conduit 94, the blower air flowing at a high speed into the air induction pipe 40 passes through the throat 92 in the venturi pipe 94 to form a low pressure nozzle. Water is evaporated from 92a.

In the above, the height H of the nozzle 92a of the venturi tube 94 is configured to be higher than the maximum water level upper limit L2 of the level adjusting unit 98, and the lower limit L1 to the upper limit L2 of the level adjusting unit 98. Until it is controlled by the level control sensor 96 and the control valve 97.

When the height (water head) H of the nozzle 92 is lower than the maximum water level upper limit L2 of the level adjusting unit 98, the coolant may be cooled toward the air induction pipe 40 even when water is not required for the blowing air. This is because the difference between the height H of the nozzle 92a and the maximum water level upper limit L2 may be caused by a sufficient suction pressure due to the pressure drop occurring at the neck 92 of the venturi tube 94. Coolant can be supplied to the inside of the blowing air.

As such, the present invention supplies cooling water to the blowing air to cool the hot wire coils.

According to the present invention as described above it is possible to supply steam moisture of ultra-fine particles to the blowing equipment for cooling the wire rod coil in the Stelmore cooling method of the wire rod coillessly. Therefore, the present invention can supply the uniform ultrafine water vapor and blowing air to the wire rod coil to cool the wire rod coil more effectively, and can greatly improve the cooling capability.

In addition, the present invention does not require a separate power equipment in the process of supplying the coolant fine particles to the blowing air, the installation cost is low, can greatly improve the cooling capacity and heat treatment capacity of the wire rod coil, according to the increase in the cooling capacity of the wire coil It can reduce the air volume. Therefore, according to the present invention can reduce the power consumption of the blower can reduce the operating cost and improve the productivity.

While the invention has been shown and described with respect to specific embodiments thereof, it has been described by way of example only to illustrate the invention, and is not intended to limit the invention to this particular structure. Those skilled in the art will appreciate that various modifications and changes of the present invention can be made without departing from the spirit and scope of the invention as set forth in the claims below. Nevertheless, it will be clearly understood that all such modifications and variations are included within the scope of the present invention.

Claims (7)

delete In the cooling apparatus for cold-heating the hot wire coil in the wire rod rolling process, A roller conveying unit which is moved on the wire rods; A blowing device for pressurizing and supplying blown air from the lower side of the roller feeder; A plurality of air guide pipes for transferring the blown air from the blower to the roller feeder; And It is configured to cool by spraying the blowing air and moisture to the wire coil at the same time, including; a cooling water supply unit respectively mounted in the middle of the air induction pipe to supply water into the air induction pipe, The cooling water supply unit, A plurality of water evaporators fixed inside the air induction pipe; A level control unit having a sensor for supplying water to the water evaporation unit and adjusting a water level; And a pipe part having a valve in the cooling water supply pipe which automatically opens and closes the cooling water supplied to the level adjusting unit by the sensor. 2. The evaporation wick is fixed to the inside of the casing is filled with cooling water, the tip of the evaporation wick protrudes to the upper side of the casing, the water evaporation portion through the capillary phenomenon of the evaporation wick Blowing and moisture cooling device for the wire rod, characterized in that the front end is supplied with water. 3. The liquid crystal display of claim 2, wherein the level control unit comprises a small chamber in which coolant is collected in an intermediate portion of a coolant supply pipe connected to the casing from a coolant supply source, and the sensor is mounted in the chamber to detect a water level. If the sensor is a water level contained in the chamber is a lower limit, and generates an electrical signal, if the upper limit is another electrical signal for blowing and moisture cooling device for the wire. 5. The sensor according to claim 4, wherein the sensor is electrically connected so that the electrical signal is interlocked with the valve, and when the sensor detects the lower limit level in the chamber, the sensor opens an automatic shut-off valve to allow the coolant to cool the chamber and the casing. And to supply the inside, and when the sensor detects an upper limit level in the chamber, closes the automatic switching valve to block the coolant supplied to the chamber and the casing. In the cooling apparatus for cold-heating the hot wire coil in the wire rod rolling process, A roller conveying unit which is moved on the wire rods; A blowing device for pressurizing and supplying blown air from the lower side of the roller feeder; A plurality of air guide pipes for transferring the blown air from the blower to the roller feeder; And It is configured to cool by spraying the blowing air and moisture to the wire coil at the same time, including; a cooling water supply unit respectively mounted in the middle of the air induction pipe to supply water into the air induction pipe, The cooling water supply unit, A plurality of high pressure water nozzles fixed inside the air induction pipe; A high pressure water pump supplying cooling water to the high pressure water nozzle through a cooling water supply pipe; And a pipe part having a valve for automatically opening and closing the cooling water supply pipe in the cooling water supply pipe. In the cooling apparatus for cold-heating the hot wire coil in the wire rod rolling process, A roller conveying unit which is moved on the wire rods; A blowing device for pressurizing and supplying blown air from the lower side of the roller feeder; A plurality of air guide pipes for transferring the blown air from the blower to the roller feeder; And It is configured to cool by spraying the blowing air and moisture to the wire coil at the same time, including; a cooling water supply unit respectively mounted in the middle of the air induction pipe to supply water into the air induction pipe, The cooling water supply unit, A venturi tube fixed inside the air induction tube and provided with a coolant nozzle in an inner throat; A level control unit having a sensor for supplying water to the venturi tube and adjusting the water level; And a pipe part having a valve in the cooling water supply pipe which automatically opens and closes the cooling water supplied to the level adjusting unit by the sensor. 2.

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