CN217536043U - Furnace top water-fetching fixed-point spraying device - Google Patents

Abstract

The utility model discloses a furnace top fixed point spray set of fetching water, including ring canal, thermocouple and carriage, the medial surface of ring canal is provided with a plurality of bleeder that are arranged annularly, and the head of bleeder is provided with the shower nozzle, is provided with motorised valve and manual valve on the bleeder, and the motorised valve is located between ring canal and the manual valve, and the lateral surface of ring canal is provided with the hose of intaking; the carriage is the U type, and the lateral wall of carriage is provided with the screw. The utility model discloses in, the shower nozzle that can control the particular position goes out water, can spray water according to the regional temperature variation of fixed point is nimble, under the prerequisite of effective control living top temperature, can avoid excessively fetching water to go into the stove, can effectively stabilize furnace roof temperature, protection furnace roof equipment. The phenomenon of 'excessive water pumping' easily generated by the previous operation of pumping water at the furnace top is avoided, and a 'safety' is added for long-term stable and smooth operation of the furnace condition and long service life of the blast furnace.

Description

Furnace top water-fetching fixed-point spraying device

Technical Field

The utility model relates to a steel industry blast furnace field, more specifically says, the utility model relates to a fixed point spray set is watered to furnace roof.

Background

The water pumping at the top of the furnace is one of important emergency means for controlling the overhigh top temperature and plays a role in protecting the equipment at the top of the furnace from being damaged by the high temperature in the furnace. The technical principle is that water is sprayed into a cavity of a furnace top in an atomized mode, and the water is heated and vaporized to absorb heat contained in hot coal gas flow in the cavity so as to reduce the temperature of the furnace top.

In recent years, the problem of excessive water supply of a plurality of domestic blast furnaces has caused serious accidents such as furnace top explosion, furnace cooling and the like; and excessive water flows down along the furnace wall to further deteriorate the air permeability in the furnace and even cause the furnace wall to be thick. The water fetching technology of the prior furnace top is further improved to avoid the occurrence of 'excessive water fetching'.

The problems to be solved are as follows:

the water distribution at the top of the furnace is uneven, and the water injection amount cannot be accurately controlled. When the water pumping operation is carried out, some furnace top point positions are repeatedly covered, and the temperature is quickly reduced; some points have little water falling, the top temperature is still too high after all the water entering the furnace is vaporized and absorbs heat, and the furnace top equipment is easily burnt out, so that production accidents and safety accidents are caused.

It is difficult to realize accurate control of the furnace top temperature. When the water is pumped, the phenomenon of local 'water pumping excess' is easy to occur at the position with relatively low top temperature, the excess water can not be completely vaporized and falls on the charge level and the furnace wall, and the accident of unsmooth furnace condition and even furnace top explosion can be caused.

The temperature of each point of the furnace top is slightly different, and the water quantity of each point is difficult to be distributed according to the requirement during the water supply operation.

Therefore, a fixed-point spraying device for water pumping from the furnace top is needed to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a furnace roof is beaten water and is fixed a point spray set, mainly solves the problem of mentioning in the background art.

The utility model provides a furnace top water-fetching fixed-point spray device, which comprises an annular pipe, a thermocouple and a support frame, wherein the inner side surface of the annular pipe is provided with a plurality of branch pipes which are annularly arranged, the head parts of the branch pipes are provided with spray heads, the branch pipes are provided with an electric valve and a manual valve, the electric valve is positioned between the annular pipe and the manual valve, and the outer side surface of the annular pipe is provided with a water inlet hose;

the carriage is the U type, and the lateral wall of carriage is provided with the screw.

In a preferred embodiment, when in use, a plurality of support frames are uniformly fixed on the side surface of the furnace top, the ring pipe is placed on the support frames, the spray head is inserted into the furnace top, a plurality of thermocouples are inserted into the furnace top, and a plurality of thermocouples are arranged in a surrounding manner.

In a preferred embodiment, there are four support frames, six branch pipes, six thermocouples, and one thermocouple located at the axial position between two adjacent spray heads.

In a preferred embodiment, the control device is further included, the thermocouple is connected with the control device in a signal mode, and the control device controls the electric valve.

In a preferred embodiment, the water inlet hose is provided with a flow meter and a main valve.

In a preferred embodiment, the loop and branch pipes are both cast iron.

The utility model discloses a technological effect and advantage:

the spray head at a specific position can be manually controlled to discharge water, water can be flexibly sprayed according to the temperature change of a fixed point region, excessive water can be prevented from being pumped into the furnace on the premise of effectively controlling the top temperature, the temperature of the furnace top can be effectively stabilized, and furnace top equipment is protected.

The phenomenon of 'excessive water pumping' easily generated by the previous operation of pumping water at the furnace top is avoided, and a 'safety' is added for long-term stable and smooth operation of the furnace condition and long service life of the blast furnace.

Drawings

FIG. 1 is a top view showing the positional relationship of a loop pipe, a branch pipe, a nozzle and a water inlet hose;

FIG. 2 is a front view of a thermocouple;

FIG. 3 is a front view of the support frame;

fig. 4 is a top view of a usage scene in which a loop pipe, a thermocouple and a support frame are installed on the top of a blast furnace.

Description of the reference numerals: 1. a ring pipe; 11. a water inlet hose; 12. a branch pipe; 13. an electrically operated valve; 14. a manual valve; 15. a spray head; 16. a flow meter; 17. a main valve; 2. a thermocouple; 3. a support frame; 31. and a screw hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

A furnace top water-fetching fixed-point spray device is shown in figures 1-4 and comprises a ring pipe 1, a thermocouple 2 and a support frame 3, wherein a plurality of branch pipes 12 which are annularly arranged are arranged on the inner side surface of the ring pipe 1, the branch pipes 12 are uniformly arranged, the branch pipes 12 are communicated with the ring pipe 1, a spray head 15 is arranged at the head part of each branch pipe 12, an electric valve 13 and a manual valve 14 are arranged on each branch pipe 12, the electric valve 13 is positioned between the ring pipe 1 and the manual valve 14, namely, the electric valve 13 is far away from the top of a blast furnace, the normal opening and closing of the blast furnace top are prevented from being influenced by the high temperature of the top of the blast furnace, the manual valve 14 is normally opened to play a standby role, when the electric valve 13 fails, the electric valve can be adjusted through the manual valve 14, a water inlet hose 11 is arranged on the outer side surface of the ring pipe 1, water enters the ring pipe 1 through the water inlet hose 11 and then passes through the branch pipes 12 to be sprayed out of the spray head 15;

the supporting frame 3 is U-shaped, the side wall of the supporting frame 3 is provided with a screw hole 31, and the supporting frame 3 can be arranged on the outer side surface of the furnace top by screwing a stud into the screw hole 31.

When the device is used, the support frames 3 are uniformly fixed on the side surface of the furnace top, the ring pipe 1 is placed on the support frames 3, the side surface of the furnace top is provided with a hole, the branch pipe 12 and the spray head 15 are inserted into the furnace top through the hole, the thermocouples 2 are also inserted into the furnace top through the hole, and the thermocouples 2 are arranged in a surrounding manner.

The number of the support frames 3 is four, the number of the branch pipes 12 is six, the number of the thermocouples 2 is six, one thermocouple 2 is located at the axial position between two adjacent spray heads 15, namely the six thermocouples 2 respectively detect each area in the furnace top, and the spray heads 15 respectively correspond to each area in the furnace top.

Still include controlgear, 2 signal connection controlgear of thermocouple, controlgear control connection motorised valve 13, when the temperature that thermocouple 2 detected is higher than furnace roof safety in production temperature, controlgear control motorised valve 13 is opened, and specific controlgear is prior art, like the industrial computer.

The water inlet hose 11 is provided with a flow meter 16 and a main valve 17.

The ring pipe 1 and the branch pipe 12 are made of cast iron, i.e. the ring pipe 1 and the branch pipe 12 are stable and will not be displaced by the flow of water.

In summary, referring to fig. 4, the main valve 17 is normally open, the ring pipe 1 is filled with water, when the temperature of a certain area in the top of the blast furnace rises, the operator opens the electric valve 13 corresponding to the spray head 15 near the area through the control equipment, and the water is sprayed out through the spray head 15 to cool the area; similarly, when the temperature of several areas rises, the worker opens the spray heads 15 near the areas to spray water for cooling.

The staff can greatly avoid the interference of rainfall on the temperature of the furnace top through manual control of the control equipment, and the practicability is better.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present disclosure. The structures, devices, and methods of operation of the present invention, not specifically described and illustrated, are generally practiced by those of ordinary skill in the art without specific recitation or limitation.

Claims (6)

1. A furnace top water-fetching fixed-point spray device is characterized by comprising an annular pipe, thermocouples and a support frame, wherein a plurality of branch pipes which are annularly arranged are arranged on the inner side surface of the annular pipe;

the carriage is the U type, and the lateral wall of carriage is provided with the screw.

2. The top water-fetching spot-spraying device of claim 1, wherein, in use, a plurality of support frames are uniformly fixed on the side surface of the top, the circular pipe is placed on the support frames, the spray head is inserted into the top of the furnace, a plurality of thermocouples are inserted into the top of the furnace, and a plurality of thermocouples are arranged in a surrounding manner.

3. The roof watering spot spray apparatus of claim 2 wherein there are four support frames, six branch pipes, six thermocouples, and one thermocouple is located at the axis between two adjacent nozzles.

4. The furnace top water-fetching fixed-point spraying device according to claim 3, further comprising a control device, wherein the thermocouple is connected with the control device in a signal manner, and the control device is connected with the electric valve in a control manner.

5. The top water-fetching spot-spraying device of claim 4, wherein the water inlet hose is provided with a flow meter and a main valve.

6. The roof top water-fetching spot-spraying device of claim 5, wherein the ring pipe and the branch pipes are made of cast iron.

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