CN217647450U

CN217647450U - Secondary cooling water system for preventing continuous casting nozzle from being blocked

Info

Publication number: CN217647450U
Application number: CN202220798756.5U
Authority: CN
Inventors: 张慈; 马若凡; 马立军; 李召岭
Original assignee: Tianjin Iron and Steel Group Co Ltd
Current assignee: Tianjin Iron and Steel Group Co Ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-10-25
Anticipated expiration: 2032-03-31

Abstract

The utility model discloses a two-cold water system for preventing continuous casting nozzle from being blocked, which comprises a water inlet main pipe, wherein two cold water supply branches with the same structure are connected in parallel on the water inlet main pipe, the two cooling water supply branches are connected with a cooling main pipe, the cooling main pipe is connected with a spraying main pipe, and a plurality of nozzles are arranged on the spraying main pipe; each cold water supply branch is sequentially provided with a first control valve and a filter; a sewage draining branch is arranged between the electromagnetic valve and the filter, and a sewage draining valve is arranged on the sewage draining branch; a back washing branch is arranged on the cold water supply branch at the water outlet of the filter, and a second control valve is arranged on the back washing branch; the cooling main pipe is sequentially provided with a flowmeter, a pressure control valve and a water stop valve. Above-mentioned technical scheme guarantees the continuation of secondary cold water continuous casting nozzle work, and two branches alternate operation, and the back flush in turn of filter has effectively guaranteed that the impurity of adhesion in time clears away on the filter, has improved the filter effect of filter, has avoided the jam of continuous casting nozzle.

Description

Secondary cooling water system for preventing continuous casting nozzle from being blocked

Technical Field

The utility model belongs to the technical field of the continuous casting cooling, especially, relate to a two cooling water systems that prevent continuous casting nozzle jam.

Background

In the solidification process of producing a casting blank, water is sprayed to the surface of the casting blank through a continuous casting nozzle for secondary cooling, the surface temperature of the casting blank is uneven due to the blockage of the nozzle, and quality accidents such as surface cracks, longitudinal cracks, corner cracks, stripping and the like can be caused due to the uneven cooling of the casting blank. Therefore, the quality of the casting blank can be ensured only by effectively avoiding the blockage of the nozzle.

The utility model carries out the prior art survey according to the actual technical problems, discloses an adjustable continuous casting secondary cooling water system in the prior art, the publication number is CN110842164A, the adjustable continuous casting secondary cooling water system comprises a secondary cooling water main pipe and a plurality of secondary cooling water branch pipes which are connected in parallel on the secondary cooling water main pipe; each secondary cold water branch pipe is provided with a three-way reversing valve and a spraying mechanism group; the three-way reversing valve comprises a first water outlet and a second water outlet; the spraying mechanism group comprises a plurality of spraying mechanisms which are connected to the first water outlet in parallel; the spraying mechanism comprises a flexible pipe, a nozzle and a fan-shaped bracket; the water inlet end of the flexible pipe is connected with the first water outlet, and the water outlet end of the flexible pipe is connected with the nozzle; an arc chute is arranged on the fan-shaped bracket, and a pin shaft is fixed on the nozzle; the pin shaft is embedded into the arc chute and swings along the arc chute under the drive of a driving device. In the prior art, the three-way reversing valve is arranged, so that alternate intermittent cooling can be realized, the total water spraying amount of the nozzle in unit time is not changed, the aperture of the nozzle can be enlarged, and the blocking probability of the nozzle is reduced; satisfy the width that sprays of on-line adjustment cooling water, adapt to different section casting blank production requirements, but the structure is more complicated relatively, for this, the utility model provides a simple structure can guarantee two cold water continuous casting nozzle work the continuation, avoided two cold water system that prevent continuous casting nozzle jam of continuous casting nozzle's jam.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model provides a simple structure can guarantee two cold water continuous casting nozzle work the continuation, avoided the two cold water systems that prevent continuous casting nozzle jam of continuous casting nozzle's jam.

The utility model discloses a two cooling water system that prevent continuous casting nozzle jam, including the water inlet main, two cooling water supply branches that the structure is the same are connected in parallel on the water inlet main, and two cooling water supply branches connect the cooling main, the cooling main connects the spray header, be equipped with several nozzles on the spray header; each cold water supply branch is provided with a first control valve and a filter from a water inlet main pipe to a cooling main pipe in sequence; a sewage draining branch is arranged between the electromagnetic valve and the filter, and a sewage draining valve is arranged on the sewage draining branch; a back washing branch is arranged on the cold water supply branch at the water outlet of the filter, and a second control valve is arranged on the back washing branch; and the cooling main pipe is sequentially provided with a flowmeter, a pressure control valve and a water stop valve. Preferably, the first control valve, the second control valve and the blowdown valve are all solenoid valves.

Preferably, the filter is a backwash filter.

The utility model has the advantages and technological effect: because the above technical scheme is adopted in the utility model, supply with the branch road through setting up the two parallelly connected cold water that set up that the structure is the same, guarantee the continuation of secondary cold water continuous casting nozzle work, two branch road operation in turn, the filter back flush in turn has effectively guaranteed that the impurity of adhesion in time clears away on the filter, has improved the filter effect of filter, has avoided the jam of continuous casting nozzle, compares with prior art aperture through adjusting the nozzle, and the structure is easily realized more, and the structure is comparatively simple moreover.

Drawings

Fig. 1 is a schematic diagram of the present invention.

In the figure, 1, a water inlet main pipe; 2. a cold water supply branch; 2-1, a first control valve; 2-2, a filter; 3. a cooling manifold; 3-1, a flow meter; 3-2, a pressure control valve; 3-3, a water stop valve; 4. a main spray pipe; 4-1, a nozzle; 5. a sewage draining branch; 5-1, a blowdown valve; 6. a back washing cleaning branch; 6-1, a second control valve;

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1, a secondary cooling water system for preventing nozzles from being blocked in continuous casting comprises a water inlet main pipe 1, wherein two cooling water supply branches 2 with the same structure are connected to the water inlet main pipe in parallel, the two cooling water supply branches are connected with a cooling main pipe 3, the cooling main pipe is connected with a spraying main pipe 4, a plurality of nozzles 4-1 are arranged on the spraying main pipe, and the arrangement direction of the nozzles 4-1 is the same as that of the prior art and is arranged along the continuous casting advancing direction; each cold water supply branch 2 is sequentially provided with a first control valve 2-1 and a filter 2-2 from a water inlet main pipe to a cooling main pipe; a blowdown branch 5 is arranged between the electromagnetic valve and the filter, and a blowdown valve 5-1 is arranged on the blowdown branch; a back washing branch 6 is arranged on the cold water supply branch at the water outlet of the filter, and a second control valve 6-1 is arranged on the back washing branch; the cooling main pipe 3 is sequentially provided with a flowmeter 3-1 for monitoring and controlling the flow rate of secondary cooling water; the pressure control valve 3-2 is used for ensuring that the pressure of the cooling water entering the nozzle group is kept unchanged; and a water stop valve 3-3 for preventing the cooling water from flowing backwards.

Preferably, the first control valve, the second control valve and the blowdown valve are all electromagnetic valves, so that remote control and automatic control are easy to achieve.

Preferably, the filter is a backwashing filter, so that backwashing operation is facilitated, operation and maintenance efficiency is improved, quick connection can be realized, other pipe fittings do not need to be configured, and leakage points are reduced.

The utility model discloses the working process: in the continuous casting production process, two cold water supply branches work alternately, wherein when one cold water supply branch works, the other cold water supply branch carries out back flushing on a filter; specifically, a first control valve on one cold water supply branch is opened, the other cold water supply branch is closed, a drain valve on the opened cold water supply branch is closed, a drain valve on the closed cold water supply branch is opened, a backwashing cleaning branch is filled with water to backwash the filter and is discharged from the drain branch, two cold water enters from the opened cold water supply branch and is filtered by a filter, a flowmeter is used for monitoring the flow rate of the two cold water, a pressure control valve ensures that the pressure of cooling water entering a nozzle group is kept unchanged, the alternate working time of the two cold water supply branches is within 1 minute, the working continuity of the two cold water continuous casting nozzles is ensured, the two branches operate alternately, the alternate backwashing of the filter effectively ensures that impurities adhered to the filter are timely removed, the filtering effect of the filter is improved, and the blockage of the continuous casting nozzles is avoided.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A secondary cooling water system for preventing a continuous casting nozzle from being blocked is characterized in that: the cooling water supply device comprises a water inlet main pipe, wherein two cold water supply branches with the same structure are connected in parallel on the water inlet main pipe, the two cold water supply branches are connected with a cooling main pipe, the cooling main pipe is connected with a spraying main pipe, and a plurality of nozzles are arranged on the spraying main pipe; each cold water supply branch is provided with a first control valve and a filter from a water inlet main pipe to a cooling main pipe in sequence; a sewage draining branch is arranged between the electromagnetic valve and the filter, and a sewage draining valve is arranged on the sewage draining branch; a back washing branch is arranged on the cold water supply branch at the water outlet of the filter, and a second control valve is arranged on the back washing branch; the cooling main pipe is sequentially provided with a flowmeter, a pressure control valve and a water stop valve.

2. The chilled water system for preventing clogging of a continuous casting nozzle of claim 1, wherein: the first control valve, the second control valve and the blow-off valve are all electromagnetic valves.

3. The chilled water system for preventing clogging of a continuous casting nozzle of claim 1, wherein: the filter is a back flush filter.