KR20000011685U - Debris Removal Device in Cooling Water - Google Patents

Abstract

The present invention is removed by the screen of the debris removal device in the course of the foreign matter contained in the cooling water supplied to the tuyere, can be effectively removed if a large amount of debris collected on the screen.

The present invention can be applied to a cooling water supply system for supplying cooling water to a high temperature object through a conduit, and is connected to a driving unit and a housing mounted between an inlet and an outlet conduit of a conduit equipped with a valve as an empty space. It consists of auxiliary pipe rotatably installed in the cooling water pipeline connected to the housing, and a mesh capable of capturing foreign substances contained in the cooling water, and is located in the housing and fixed to one end of the auxiliary pipe so that it can be rotated according to the operation of the driving unit. It consists of a screen to allow the coolant to flow into the auxiliary pipe, a guide pipe located at the bottom of the housing, a guide pipe connected to the bottom of the housing, a gate for opening and closing the guide pipe, and a chute located at the bottom of the guide pipe. Foreign substance discharged to End, connected to an inlet conduit and an outlet conduit connected with the housing and consists of a right center is equipped with a differential pressure detector for detecting a pressure difference between the valve and the valve and the inlet conduit and the outlet conduit to operate the other hand mounted to the inlet pipe and outlet pipe.

Description

Debris Removal Device in Cooling Water

The present invention relates to a device for removing foreign matter contained in the coolant, and more particularly, to a device for removing the foreign matter containing the coolant that can collect and discharge the foreign matter to the outside during the flow of the coolant.

In general, the blast furnace work, which is one of the steelmaking processes, loads iron ore and cokes into the blast furnace, and the hot blast (1,200 ± 20 ° C) generated from the hot blast furnace is introduced into the blast furnace through a blowhole formed at one side of the blast furnace. It is a process of producing molten iron through melt reduction process by blowing in. About 30 places of the tuyere that performs the above-described function is installed around the lower part of the blast furnace, made of copper (copper) excellent in heat transfer.

Cooling means are configured therein to protect these tuyeres from the semi-melt charges inside the blast furnace. That is, as shown in Fig. 1 showing the blast furnace cooling system of the blast furnace, a pipe through which the cooling water flows is installed in each spiral hole 2 in a spiral form around the blast furnace 1, and an external cooling water supply means. Cooling water supplied through (3) cools the tuyere as it flows through the pipeline.

However, foreign matters generated in the cooling water pipe (pipe) during the flow of the cooling water (foreign materials separated from various valves and sealing packings) move to the air vent 2 to block the inlet. In addition, the foreign matter accumulates in the curved portion of each cooling water pipe or in the corners of the tuyere, which hinders the smooth flow of the cooling water. Therefore, since a certain amount of cooling water does not flow, the cooling effect on the tuyere (2) is lowered, in particular, the loss of tuyere by hot melt generated inside the blast furnace (2) and the resulting tuyere wave (high temperature or molten iron of the design) Due to the melting of the tuyere, molten iron and coke stick out of the blast furnace.

Therefore, an object of the present invention is to provide a cooling water-containing foreign matter removal apparatus that can continuously solve the above-described problems and obtain a cooling effect for the windball continuously.

The present invention for realizing the above object can be applied to the cooling water supply system for supplying the cooling water to the high temperature object through the pipeline, and is installed between the inlet and outlet pipes of the pipelines each equipped with a valve as an empty space. The auxiliary pipe is fixed to the driven gear meshed with the driving gear of the driving unit and is rotatably installed in the cooling water pipe connected to the housing, and the mesh is capable of collecting foreign substances contained in the cooling water. And a screen which is rotatable according to the operation of the drive unit to allow the free movement of the coolant and the introduction of the coolant into the fixed auxiliary pipe, and to open and close the guide pipe and the guide pipe located at the bottom of the housing. Consists of a suit located at the bottom of the gate and guide pipe The pressure difference between the inlet and outlet pipe connecting the inlet and outlet pipe connected to the housing and the inlet and outlet pipe connected to the housing It consists of a bypass tube equipped with a differential pressure detector for detecting.

The housing is connected to the washing water supply pipe for washing water supply, and is connected to the washing water supply pipe between the housing and the screen, and the fixed washing water spraying body is positioned to spray the washing water on the screen to quickly separate and discharge foreign substances.

1 is a schematic diagram illustrating a blast furnace cooling system of the blast furnace;

Figure 2 is a perspective view showing a cooling water supply line equipped with the subject innovation.

3 is a cross-sectional view of FIG.

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

Figure 2 is a perspective view showing a coolant supply pipe is equipped with the subject innovation, Figure 3 is a cross-sectional view of Figure 2, the subject innovation is a coolant pipe 10 for connecting the cooling water supply means (not shown) and the tuyere (not shown) (10) It is installed on the pipe route.

Here, for convenience, a conduit for supplying cooling water into the foreign substance removing apparatus 100 is referred to as an "inflow conduit 11", and a conduit through which the coolant is discharged from the foreign substance removing apparatus 100 is referred to as an "outflow conduit 12".

The inlet pipe 11 and the outlet pipe 12 are connected by the bypass pipe 20 in parallel with the debris removal device 100, and the bypass pipe 20 also connects the cooling water supply means and the tuyere. A plurality of flanges are mounted on the coolant pipe 10 to install the debris removing device 100 and the valve.

The foreign material removing apparatus 100 is installed in the spherical housing 110, the spherical screen 140 located inside the housing 110, the housing 110, and the washing water corresponding to the outer surface of the screen 140. Injector 150, the drive unit 120 and the power transmission means 130 for rotating the screen 140, the discharge means 160 for discharging the removed foreign matter to the outside at the bottom of the housing 110 It is composed.

The configuration and interrelationship of each member constituting the foreign matter removing apparatus 100 will be described with reference to the drawings.

Housing 110

The housing 110, which is installed between the cooling water pipe 10, that is, the inlet pipe 11 and the outflow pipe line 12 by the flanges 13 and 14, is an empty space inside the washing water supply pipe 151. Is connected, the discharge means 160 for external discharge of the removed foreign matter is connected to the bottom.

Drive unit 120 and power transmission means 130

The driven gear 122 meshed with the drive gear 121 of the drive unit 120 is installed on the outflow conduit 12, and the inside thereof is penetrated in the longitudinal direction. An auxiliary pipe 123 having a diameter smaller than that of the outlet pipe path 12 is inserted and fixed in the through path of the driven gear 122, so that the auxiliary pipe 123 is in the outlet pipe path 12 according to the operation of the driving unit 120. You can rotate from One end of the auxiliary pipe 123 inserted and fixed in the driven gear 122 is located in the housing 110.

Screen 140

The screen 140 located in the spherical housing 110 is also spherical, and one end of the auxiliary pipe 123 located in the housing 110 is fixed. The screen 140 is made of mesh and therefore does not interfere with the free movement of the coolant. In addition, the coolant may be introduced into the auxiliary pipe 123 fixed to the screen 140. Since the screen 140 is fixed to one end of the auxiliary pipe 123, the rotational force of the driving unit 120 is transmitted to the screen 140 through the driving gear 121, the driven gear 122, and the auxiliary pipe 123. .

Wash water jet (150)

A plurality of pipes are connected to form a spherical washing water spray 150 is located between the housing 110 and the screen 140, as shown in Figure 3 washing water supply pipe 151 connected to the upper housing 110 ) Is supported. Each pipe constituting the washing water sprayer 150 is equipped with a nozzle 152 for spraying the washing water.

Foreign substance discharge means (160)

The foreign substance discharging means 160 positioned below the housing 110 may include a guide pipe 161 connected to the bottom of the housing 110, a gate 162 opening and closing the guide pipe 161, and a chute disposed under the guide pipe 161. It consists of 163. The gate 162 is operated by driving means (not shown) such as a cylinder or a motor to open and close the guide pipe 161.

Cooling water pipe (10) and bypass pipe (20; bypass pipe)

Blocking the flow of the coolant in the inlet pipe 11 through which the coolant flows into the housing 110 and the outflow pipe 12 through which the coolant flows from the housing 110 of the coolant pipe 10 connected to the foreign material removing device 100. The valves 16 and 17 are respectively provided, and a separate bypass pipe 20 for bypassing the cooling water is connected to the inlet pipe 11 and the outlet pipe 12.

A valve 21 is provided on the bypass pipe 20 to block the flow of cooling water flowing into the bypass pipe 20, and detects a pressure difference between the inflow pipe 11 and the outflow pipe 12. The differential pressure detector 22 is provided.

Referring to the operation of the present invention having the configuration as described above are as follows.

The initial state, that is, the valve 21 of the bypass pipe 20 is blocked, the valves 16 and 17 of the inlet pipe 11 and the outlet pipe 12 are open, the foreign matter discharge means 160 The guide pipe 161 is closed by the gate 162, and the high pressure coolant is supplied to the air vent through the coolant supply line 10 (the bypass pipe is blocked by the valve) in the coolant supply means (not shown). do. At this time, the coolant passes through the housing 110 shown in FIGS. 2 and 3. Various foreign matters contained in the coolant are collected in the mesh screen 140 while the high-pressure coolant is introduced into the housing 110 and flows, and the coolant from which the foreign matter has been removed is connected to the auxiliary pipe 123 connected to the screen 140. (Received inside the outlet pipe passage) and through the outlet pipe passage 12 is supplied to the tuyere.

As the above-described process proceeds, the flow rate of the cooling water continuously supplied is reduced due to the foreign matter collected on the screen 140, and thus, the inflow pipe 11 for supplying the cooling water to the foreign matter removing apparatus 100 and A pressure difference (a decrease in the coolant pressure in the outflow pipe) is generated between the outflow pipe paths 12 through which the coolant flows out of the foreign matter removing apparatus 100. The pressure difference detector 22 provided in the bypass pipe 20 detects this pressure difference. When the detected pressure difference is out of the set range (within 0.5 to 0.7 Kg / cm ² ), the detection signal of the pressure difference detector 22 is transmitted to the controller, and the controller opens the valve 21 of the bypass pipe 20. , Blocking the valves 16 and 17 of the inlet pipe 11 and the outlet pipe 12, opening the guide pipe 161 of the foreign substance discharge means 160 and simultaneously operating the driving unit 120, wherein the washing water supply pipe Open 151.

Therefore, the coolant is supplied to the air port through the bypass pipe path 20 without passing through the foreign substance removing device 100, and the coolant remaining in the housing 110 is provided through the guide pipe 161 connected to the bottom of the housing 110. It is discharged to the outside.

According to the operation of the driving unit 120, the driven gear 122 engaged with the driving gear 121 rotates, and the auxiliary pipe 123 fixed inside the driven gear 122 rotates in the outflow conduit 12. Done. The screen 140 on which one end of the auxiliary pipe 123 is fixed rotates in the housing 110, and the washing water is sprayed from the nozzle 152 of the washing water spraying body 150 toward the rotating screen 140. .

The foreign matter collected on the screen 140 is separated from the screen 140 by centrifugal force acting on the rotating screen 140 and is contained in the chute 163 through the guide pipe 161. At the same time, the washing water sprayed from the washing water spraying body 150 forcibly removes foreign substances remaining on the screen 140 and transfers them to the chute 163.

After the operation is performed for a predetermined time, the valve 21 of the bypass pipe 20 is blocked by the controller, and the valves 16 and 17 of the inlet pipe 11 and the outlet pipe 12 are opened, and the foreign substance is discharged. The gate 162 of the means 160 is blocked, the operation of the drive unit 120 is stopped, the washing water supply pipe 151 is blocked, so that the coolant is passed through the debris removal device 10, the foreign matter by the screen 140 It is supplied to the tuyere in a removed state.

When the pressure difference occurs again between the inlet pipe 11 for supplying the coolant to the debris removal device 10 and the outlet pipe 12 through which the coolant flows from the debris removal device 100 after the above-described process is completed. Will be repeated.

The present invention as described above is removed by the screen of the debris removal device in the process of the foreign matter contained in the cooling water supplied to the wind hole, if a large amount of debris is collected on the screen after a certain time can be effectively removed. Because of the foreign matter, it can prevent the cooling effect and the damage of the air hole in advance.

In the above description, the present invention has been described in a state in which the present invention is mounted on the cooling means for cooling the tuyere configured in the blast furnace, but is not limited thereto. Of course, the present invention may be applied to all cooling systems using cooling water.

Claims (2)

In the cooling water supply system for supplying the cooling water to the high temperature object through the pipeline, An empty space inside the housing, the housing being mounted between the inlet and outlet lines of the pipeline, each of which is equipped with a valve; An auxiliary pipe connected to the driving unit and rotatably installed in the cooling water pipe connected to the housing according to the operation of the driving unit, one end of which is located in the housing; It is made of a mesh that is capable of collecting foreign matter contained in the coolant, and is located in the housing, and is fixed to one end of the auxiliary pipe and rotatable according to the operation of the driving unit. The free movement of the coolant and inflow of the coolant into the fixed auxiliary pipe With screen to enable, Located in the lower housing, consisting of a guide pipe connected to the lower end of the housing, a gate for opening and closing the guide pipe and a chute located at the bottom of the guide pipe to transfer foreign matter separated from the screen to the chute; By connecting the inlet pipe to the outlet pipe connected to the housing to bypass the flow of the coolant to the object when the pipe connected to the housing, and the valve and the inlet pipe and the outlet pipe that operates opposite to the valve mounted on the inlet pipe and the outlet pipe The foreign material removal device contained in the cooling water, characterized in that the bypass pipe is equipped with a differential pressure detector for detecting the pressure difference between the liver. The method of claim 1, The housing is connected to a wash water supply pipe for supplying the wash water, and a foreign substance contained in the coolant, which is connected between the housing and the screen, is connected to the wash water supply pipe, and a fixed wash water spray body is sprayed on the screen. Removal device.