KR20020088687A - Apparatus for preventing wear of cooling pipe in radiant part - Google Patents

Abstract

PURPOSE: An apparatus for preventing wear of cooling water pipe in a radiant part is provided to prevent damage of the cooling water pipe of the radiant part for cooling high temperature flue gas generated during blowing operation of a converter. CONSTITUTION: The apparatus for preventing wear of cooling water pipe in a radiant part comprises a lead-in opened hole part which is formed to a lower direction on an inclined surface of the cooling water pipe of the radiant part for cooling a flue gas generated during blowing operation of a converter so that the lead-in opened hole part is projected to the outside; an injection unit part(9) that is rested on the lead-in opened hole part to inject nitrogen; a cooling unit part(11) which is connected in a length direction of the injection unit part(9) to cool the injection unit part(9); a buffer part(12) which is connected in a length direction from the cooling unit part(11) to buffer internal shock of the lead-in opened hole part and the injection unit part(9); and an air cylinder part(13) which is connected to the buffer part(12) to drive the injection unit part(9) back and forth.

Description

Abrasion prevention device of radiant water pipe part {APPARATUS FOR PREVENTING WEAR OF COOLING PIPE IN RADIANT PART}

The present invention relates to a cooling water pipe wear protection device of the radiation portion, more specifically, the cooling water pipe portion of the radiation portion for cooling the high temperature exhaust gas generated during the blowing operation of the converter by the heat molecules contained in the high temperature exhaust gas. The present invention relates to a cooling water pipe wear protection device of a radiating part for intensively rubbing on a photographic part and eliminating a large amount of sticking during the drilling to prevent damage to the cooling water pipe part.

In general, as shown in FIG. 1, the cooling water pipe part 3 of the radiating part 2 of the converter 1 prevents oxidation of the pipe and deterioration or deformation of the cooling water pipe part by circulating steam water. As the exhaust gas of high temperature rises and rubs on the surface inclined to the radiant part 2 in the direction, wear of the cooling water pipe part 3 due to high heat causes steam water leakage, and cooling control of the high temperature exhaust gas when the converter 1 is blown. As a result, the coarse heat particles contained in the exhaust gas are intensively rubbed on the inclined surface of the bent portion 4 of the radiator 2, the coolant pipe 3, and the coolant pipe part is worn out.

The lower end of the bent portion of the radiator which has the greatest influence on the flue gas flow, because the heat particles in the flue gas are concentrated by the lower circumference or friction in the collecting portion of the water pipe, that is, the fin joint, so that the outer surface of the water pipe portion wears a lot, so that the cooling water pipe portion In order to repair, during the regular repair work, the worker enters the interior and rides the gondola along the curved slope at the bottom end of the radiator cooling water pipe, fosters the wear part, processes the machine or checks and repairs the leaked part.

However, in the case of safety, the internal temperature has to be cooled down enough to enter inside. Therefore, the concentrated worn part needs to be checked carefully, and it takes a lot of time. Safety problems are occurring, and during operation, if leakage of steam water from the cooling water pipe occurs, it is necessary to drain all the cooling water supplied to the copying part, which consumes a large amount of cooling water or delays the preheating time, which causes problems in production. . In addition, there is a problem that the dust collection efficiency is lowered than the cooling dust collection equipment due to the poor control of the exhaust gas.

Therefore, the present invention has been made in order to solve the above problems, to prevent the wear of the cooling water pipe portion provided on the inclined surface of the bent portion of the radiating portion by the flow of exhaust gas generated during the converter blow operation, to cool the exhaust gas flow smoothly Cooling water in the radiating part to increase the cooling effect by preventing the friction of the cooling water pipe part and improving the cooling effect by preventing the friction of the cooling water pipe part by passing the exhaust gas passing through the radiating part by injecting nitrogen into the pipe part to secure the opening part. The purpose is to provide a pipe wear protection device.

1 is a schematic view showing a radiating part cooling water pipe part for discharging exhaust gas generated when a converter is blown;

Figure 2 is a perspective view showing a state in which the radiation portion of the cooling water pipe portion wear prevention apparatus of the radiation portion is inserted into the radiation portion according to the present invention;

Figure 3 is a perspective view showing the configuration of the cooling water pipe portion wear protection device of the radiation portion according to the present invention;

Figure 4 is a combined perspective view of the cooling unit and the buffer unit of the nitrogen inlet pipe of the injection device provided in the cooling water pipe unit wear protection device of the radiation portion according to the present invention;

Figure 5 is a perspective view showing the injector portion of the cooling water pipe portion wear protection device of the radiation portion according to the present invention.

♣ Explanation of symbols for main part of drawing ♣

1: Converter 2: Copy 3: Cooling water pipe 4: Cooling water pipe wear protection device

6: Introduction opening 7: Connection flange part 9: Injection device part 12: Shock absorber part

13: Air cylinder part 10: Injection head part 19: Limit target

In order to achieve the above object, the exhaust water generated during the blowdown of the cooling water pipe wear protection device converter of the radiation unit according to the present invention is formed downward on the inclined surface of the radiation unit cooling water pipe of the exhaust gas to the inlet opening and the protruding to the outside In order to mitigate the internal impact of the inlet opening and the injector unit while having an injector unit seated to inject nitrogen and a cooling unit unit connected in the longitudinal direction of the injector unit to cool the injector unit, And an air cylinder unit connected to the buffer unit in the longitudinal direction from the cooler unit and connected to the buffer unit to drive the injector unit before and after.

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

Figure 2 is a combined perspective view showing a state in which the radiation portion is inserted into the radiation portion of the cooling water pipe wear protection device according to the present invention, Figure 3 is a perspective view showing the configuration of the cooling water pipe wear protection device of the radiation portion according to the present invention.

As shown in FIG. 2, the lead-in opening 6 of the cooling water pipe 3 of the radiation unit 2 includes the wear-resistant device 5 of the cooling water pipe 3 of the radiation unit 2 according to the present invention. As the opening part 6 is formed on a surface inclined in the lower direction with respect to the exhaust gas flow, the inlet opening part 6 is protruded to the outside to secure a space for easy nitrogen injection. It is made integral with the connecting flange 7 incorporating the cylindrical tube.

The wear protection device 5 of the cooling water pipe part of the radiation unit according to the present invention composed of each of these device units is operated by the exhaust gas flow rate and pressure and the temperature difference by the forced manned blowing pressure. The entire circumference of the radiator 2 in order to prevent the heat particle component contained in the exhaust gas from passing through the radiator 2 to the cooling water pipe part 3, which forms the inclined surface of the bent part 4, and blocks upward. Has a circular shape, but due to friction of the thermal particles on the bottom line forming the inclined surface of the bent portion 4, the inlet opening 6 is fixed to the copying portion 2 adjacent to the point where the bent portion 4 is inclined. It is formed at intervals can be inserted into the cooling water pipe portion wear prevention device 5 of the radiation portion according to the present invention at a predetermined interval to prevent the wear of the cooling water pipe portion (3).

As shown in FIG. 3, the wear protection device 5 of the cooling water pipe part of the radiation part according to the present invention is mounted on the inlet opening 6 of the radiation part 2, is integrated with the connection flange part 7, and is integrally formed. While the cooling cylinder tube 8 and the injection head portion 10 of the injector unit 9 which protrudes from the cooling cylinder tube 8 and enters the inlet opening 6 to inject nitrogen, To reduce the internal impact of the chiller unit 11 and the inlet opening 6 and the injector unit 9 which are connected in the longitudinal direction of the yarn device 9 to cool the injector unit 9. In order to drive the injector unit 9 before and after the buffer unit 12 is connected in the longitudinal direction from the cooling unit 11, and the buffer unit 12 in the longitudinal direction 13 ),

The water supply valve 15 connected to the water supply pipe 14 to supply the cooling water to the cooling unit 11, and the drain valve 17 connected to the drain pipe 16 for the drainage of the supplied cooling water are composed of electronic valves. To control the cooling.

In addition, each component of the cooling water pipe wear protection device of the radiation unit according to the present invention is provided to detect the limit target 19 mounted on the joint portion 18 of the air cylinder portion 13 provided to control in conjunction with 1 limit 20, the second limit 21 is connected to the control unit to detect the start state of blown, connected to the nitrogen supply pipe 22 of the injector unit 9 is open or closed the nitrogen supply valve 23 composed of an electromagnetic valve To judge.

Figure 4 is a perspective view of the combination of the cooling unit and the buffer unit of the nitrogen inlet pipe of the injection device provided in the cooling water pipe unit wear protection device of the radiation portion according to the present invention.

As shown in FIG. 4, the cooling device 11 seated on the connecting flange 7 of the cooling water pipe 3 and the opening 3 of the cooling water pipe 3 includes the inlet 25 and the bolt on which the sleeve 24 is mounted. The first cooling pipe 28, which is fixed by the 26 and the nut 27 and to which the cooling water is supplied to prevent deterioration, includes a water supply valve 15 having a cooling water supply pipe 14 mounted at one side and configured with an electromagnetic valve. In addition, the second cooling pipe 29 includes a cooling water drain pipe 16 and a drain valve 17 composed of an electromagnetic valve so that the cooled water is smoothly discharged.

In addition, the first cooling tube 28 of the inner side is an external structure formed so that water can be introduced into the inner side, and a small cylindrical tube 30 is installed inside to support the cooling device and the cylindrical tube 30. The blind flange portion 31 is attached to the outside of the.

The buffer part 12 is interposed in the longitudinal direction from the cooler part 11 in order to alleviate the internal opening 6 and the internal shock when the injector part 9 is driven, and the blind flange part 31 and The blind flange 31 is configured to have fluidity by providing a buffer spring 33 between the stoppers 32 provided at the distal end of the nitrogen inlet pipe 22 of the injector unit 9.

The wear protection device of the cooling water pipe part of the radiation unit according to the present invention having such a configuration is provided with coolant at all times so as not to be thermally deformed because the internal temperature of the radiation unit is about 1300 ° C. The water circulated in the first cooling tube 28 supplied by the first cooling tube 28 and enclosing the inner small cylindrical tube 30 passes through the second cooling tube 29. The water cooled by the drain valve 17 of 16 is drained.

Figure 5 is a perspective view showing the injector portion of the cooling water pipe portion wear protection device of the radiation portion according to the present invention.

As shown in FIG. 5, the injector part 9 which injects nitrogen from the inlet opening 6 of the radiator 2 and the coolant pipe part 3 is an air cylinder 34 having a forward and backward mobility, and an electromagnetic valve 35. ), The cylinder shaft 36, the joint portion 18, the limit target 19 mounted to the joint portion 18, and nitrogen is supplied through the tee pipe 37 uniaxially connected to the joint portion 18 The nitrogen inlet pipe 38 for supplying nitrogen to the coolant pipe part 3, the nitrogen supply pipe 22 for supplying nitrogen to the tee pipe 37, and the nitrogen supply valve 23 and the nitrogen inlet pipe 38. The head portion 10 of the plurality of injection holes 42 are formed, the inner tube penetrates the center of the injection screw 39 and the injection screw 39 to protrude inwards, the center pipe 40 It consists of a dispersion pipe 41 for connecting.

The cooling water pipe wear protection device of the radiating portion according to the present invention having such a configuration, when the drilling operation for manufacturing molten iron in the converter is started, the electronic valve 35 of the cooling water pipe wear protection device installed on the inclined surface of the bent portion of the radiation portion By this operation, the cylinder shaft 36 of the air cylinder 34 is advanced so that the limit target 19 of the joint portion 18 attached to the cylinder shaft 36 is moved from the first limit 20 to the second limit 21. In order to signal the blow start state to the control unit, the cylinder was operated to absorb the shock from the shock absorbing portion (12) equipped with a shock absorbing spring (33) so that no gas leaks out to the shaft portion so that leakage does not occur.

In addition, in the tee pipe 37 connected to the joint portion 18 of the cylinder shaft 36, the valve 23 of the nitrogen supply pipe 22 is always open to prevent sealing of the gas and thermal deformation, and when the air cylinder 34 is operated. That is, when the blowing starts, the head part 10 of the nitrogen inlet pipe 38 flows into the inlet opening part 6 into the opening part 6 to open the plurality of injection holes 42 formed in the head part 10. Nitrogen gas is injected through the injection, the nitrogen discharged from the injection screw 39 is injected into the vortex type 43 by the terminal dispersion pipe 41, the center tube 40 of the dispersion pipe 41 is vortex nitrogen Injection of the exhaust gas flows through the projections by nitrogen installed in a plurality of inclined surfaces of the lower bend of the radiator to prevent the particles contained in the exhaust gas from scattering and wear due to intensive friction on the curved inclination of the radiator. have.

In addition, when the blow is completed, the electromagnetic valve 35 is operated to return the cylinder shaft 36 to the position of the first limit 20 from the second limit 21 so that the protective tube of the connection flange 7 of the opening 6 is closed. Nitrogen should always be supplied while wrapping the head 10 in (8).

The wear protection device of the cooling water pipe part of the radiation part according to the present invention is introduced into the opening formed downward from the cooling water pipe part of the curved inclined surface of the radiation part during the blowing operation of the converter, and the exhaust gas passing through the radiation part stably injects nitrogen into the opening part. Protruding by the nitrogen gas injected while passing through the cooling water pipe portion prevents the friction of the cooling water pipe portion and smoothes the flow of exhaust gas, thereby improving the cooling effect and improving productivity.

Claims (6)

An inlet opening 6 formed downward from an inclined surface of the radiating part 2 of the exhaust gas generated during the blow-in of the converter 1 and protruding outwardly; An injector part 9 seated in the inlet opening 6 to inject nitrogen; A chiller unit 11 connected in the longitudinal direction of the injector unit 9 to cool the injector unit 9; A buffer unit 12 connected in the longitudinal direction from the cooling unit 11 to mitigate the internal impact of the inlet opening 6 and the injector unit 9; Apparatus for preventing wear of the radiating part cooling water pipe part, comprising an air cylinder part (13) connected to the buffer part (12) to drive the injector part (9) before and after. The method of claim 1, The inlet opening 6 protrudes to the outside to secure a space for easy nitrogen injection, and wear of the radiating part cooling water pipe part, characterized in that it is formed integrally with the cooling cylinder tube 8 combined with the connection flange (7). Prevention device. The method of claim 1, The injector unit 9 is characterized in that it comprises a nitrogen inlet pipe 38 for introducing nitrogen gas and the injection head portion 10 for injecting nitrogen gas is seated in the inlet opening (6) Abrasion prevention device of the radiating water cooling part. The method of claim 1, The buffer part 12 is a buffer spring interposed between the blind flange 31 connected to the cooling unit 11, the nitrogen inlet pipe 38 and the fixed stopper 32 of the injector unit (9). Apparatus for preventing abrasion of the radiant cooling water pipe part, characterized in that it comprises a (12). The method of claim 1, The air cylinder unit 13 is fixed to the end of the nitrogen inlet pipe 38 of the injector unit 9 to drive the injector unit 9 before and after the first to detect the state of blow start Apparatus for preventing wear of the radiating part cooling water pipe part, comprising a limit (20) and a second limit (21). The method of claim 3, The injection head portion 10 is formed of a plurality of injection holes 42 for injecting nitrogen, and is provided inside the head portion 10, the center tube 40 to discharge nitrogen gas to the end of the head portion (9) And a dispersing pipe 41 connected to the center pipe 40 of the spraying screw 39 so as to spray the nitrogen gas discharged by the spraying screw 39 into the vortex 43. Cooling pipe portion wear protection device of the radiation portion, characterized in that comprises a).