Water atomization cooling system for oil pipe at turntable of blast furnace tapping machine

Abstract

The utility model provides a blast furnace tapping machine turntable oil pipe water atomization cooling system, including spraying pipeline subassembly, cooling water receiving tray and water conduit, spraying pipeline subassembly includes atomizing nozzle and water receiving pipeline, atomizing nozzle is provided above the oil pipe, the water receiving pipeline is communicated with atomizing nozzle; the cooling water receiving disc is sleeved below the oil pipe, and the diameter of the cooling water receiving disc is larger than the diameter of the water spraying range of the atomizing nozzle; and the water conduit is communicated with the cooling water receiving disc and extends to the ground. According to the utility model, the oil leakage of the oil pipe caused by slag iron splashing or molten iron high-temperature radiation can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling systems, in particular to a water atomization cooling system for an oil pipe at a rotary table of a blast furnace tapping machine. Background Art

[0002] At present, when the blast furnace is tapping iron, the taphole is opened by the taphole opening machine. The taphole opening machine is an important machine for opening the taphole when the blast furnace is tapping iron. Most of the oil circuits of the taphole opening machine used in the blast furnace are connected by a hose. The inner layer of the hose is a rubber hose and the outer layer is covered with a woven stainless steel mesh. When the taphole is opened, the oil pipe is easily burned by high temperature and slag splashing, and the coated stainless steel layer can only block fine particles of slag. Especially when the furnace condition is poor and the tapping is unstable, the taphole splashes a lot, and the taphole opening machine oil pipe is easily burned by slag splashing and causes oil leakage; and when the iron is tapping, the molten iron radiates at high temperature, the temperature in the taphole area is high, and the taphole opening machine oil pipe is in a high temperature environment for a long time. The oil pipe sealing ring and the rubber layer of the oil pipe are easily deformed by heat, resulting in oil leakage of the oil pipe. Maintenance workers are often required to replace the oil pipe or sealing ring, which increases the workload of the maintenance personnel in front of the furnace and increases the maintenance cost. In addition, the dangerous factors of coal gas and high temperature in the taphole area bring danger to the maintenance work.

[0003] In order to prevent slag from splashing onto the taphole opening machine, a slag blocking plate is currently installed at the front end of the taphole opening machine rail frame. Although the slag blocking plate can block the splashing of slag on the oil pipe at the front end of the taphole opening machine, if the taphole splashes heavily, the slag will splash onto the oil pipe at the rotating arm and the turntable. Therefore, it is necessary to solve the hidden danger of oil leakage in the oil pipe at the turntable of the taphole opening machine due to slag splashing and high-temperature radiation of molten iron. Summary of the invention

[0004] The utility model aims to solve one of the above-mentioned technical problems and provides a water atomization cooling system for the oil pipe at the turntable of the blast furnace opening machine, which can effectively prevent the oil pipe from leaking due to slag splashing or high-temperature radiation of molten iron.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0006] A water atomization cooling system for an oil pipe at a turntable of a blast furnace opening machine comprises a spray pipeline assembly, a cooling water receiving plate and a water diversion pipe, wherein the spray pipeline assembly comprises an atomizing nozzle and a water receiving pipe, wherein the atomizing nozzle is arranged above the oil pipe, and the water receiving pipe is connected to the atomizing nozzle; the cooling water receiving plate is sleeved on the bottom of the oil pipe and the diameter of the cooling water receiving plate is larger than the diameter of the water spraying range of the atomizing nozzle; the water diversion pipe is connected to the cooling water receiving plate and extends to the ground.

[0007] Furthermore, a drainage ditch is opened on the ground, and the water diversion pipe extends into the drainage ditch.

[0008] Furthermore, the water connecting pipeline includes a water inlet pipeline and a compressed air pipeline, the water inlet pipeline includes a water outlet pipe and a water inlet pipe, the water outlet pipe is connected to the water inlet pipe, the water outlet pipe is located above the oil pipe, and the atomizing nozzle is installed on the water outlet pipe; a water inlet ball valve and a water inlet stop valve are installed on the water inlet pipe, and the water inlet stop valve is located between the water inlet ball valve and the water outlet pipe; the compressed air pipeline is connected to the water outlet pipe, a supply ball valve and an air supply stop valve are installed on the compressed air pipeline, and the air supply stop valve is located between the supply ball valve and the water outlet pipe.

[0009] Furthermore, the compressed air pipeline is inclined downward relative to the water outlet pipe.

[0010] Furthermore, the compressed air pipeline is inclined downwardly at an angle of 25°-30° relative to the water outlet pipe.

[0011] Furthermore, the diameter of the water inlet pipeline is DN15-DN50, and the pressure is 0.5MPa~1.0MPa; the diameter of the compressed air pipeline is DN25~DN50, and the pressure is 0.3MPa~0.8MPa.

[0012] Furthermore, the water outlet pipe is an annular pipe and the diameter of the annular pipe is the same as the diameter of the oil pipe.

[0013] Furthermore, there are a plurality of atomizing nozzles, and the plurality of atomizing nozzles are arranged at intervals on a side of the annular tube facing the oil pipe.

[0014] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0015] When using the water atomization cooling system for the oil pipe at the turntable of the blast furnace opening machine, the water connection pipeline supplies water to the atomizing nozzle, and the atomizing nozzle sprays atomized water to the oil pipe, and the atomized water cools the oil pipe and cools the slag splashed from the iron mouth in time to prevent the oil pipe from burning through; the cooled waste water flows to the cooling water receiving tray and is led out of the cooling water receiving tray through the water guide pipe. It can be seen that the utility model can effectively prevent the oil pipe from leaking due to the splashing of slag or the high-temperature radiation of molten iron. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the water atomization cooling system of the oil pipe at the turntable of the blast furnace tapping machine.

[0017] 1- spray pipe assembly, 11- atomizing nozzle, 12- water inlet pipe, 121- water inlet ball valve, 122- water inlet stop valve, 123- water outlet pipe, 124- water inlet pipe, 13- compressed air pipeline, 131- air supply ball valve, 132- air supply stop valve, 2- cooling water receiving tray, 3- water diversion pipe, 4- drainage ditch, 100- oil pipe, 101- opening machine turntable. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0021] like Figure 1 As shown, a preferred embodiment of the utility model provides a water atomization cooling system for the oil pipe at the turntable of the blast furnace opening machine, which is used for cooling the oil pipe 100 installed on the turntable 101 of the opening machine. It includes a spray pipeline assembly 1, a cooling water receiving tray 2 and a water guide pipe 3. The spray pipeline assembly 1 includes an atomizing nozzle 11 and a water receiving pipeline, the atomizing nozzle 11 is arranged above the oil pipe 100, and the water receiving pipeline is connected to the atomizing nozzle 11; the cooling water receiving tray 2 is sleeved under the oil pipe 100 and the diameter of the cooling water receiving tray 2 is larger than the diameter of the water spraying range of the atomizing nozzle 11; the water guide pipe 3 is connected to the cooling water receiving tray 2 and the water guide pipe 3 extends to the ground.

[0022] When the water atomization cooling system of the oil pipe at the turntable of the blast furnace opening machine is used, the water receiving pipeline supplies water to the atomizing nozzle 11, and the atomizing nozzle 11 sprays atomized water to the oil pipe 100, and the atomized water cools the oil pipe 100, and at the same time, the slag splashed from the iron mouth is timely cooled to prevent the oil pipe 100 from burning; the cooled waste water flows to the cooling water receiving pan 2 and is led out of the cooling water receiving pan 2 through the water guide pipe 3. It can be seen that the utility model can effectively prevent the oil pipe 100 from leaking oil due to the splashing of slag or the high-temperature radiation of molten iron.

[0023] In this embodiment, a drainage ditch 4 is opened on the ground, and the water diversion pipe 3 extends into the drainage ditch 4. The cooling water diverted through the water diversion pipe 3 is finally discharged from the site through the drainage ditch 4.

[0024] In this embodiment, the water receiving pipeline includes a water inlet pipeline 12 and a compressed air pipeline 13. The water inlet pipeline 12 includes a water outlet pipe 123 and a water inlet pipe 124, the water inlet pipe 124 is connected to industrial water, the water outlet pipe 123 is communicated with the water inlet pipe 124, and the water outlet pipe 123 is located directly above the oil pipe 100. The atomizing nozzle 11 is installed on the water outlet pipe 123. The water inlet pipe 124 is equipped with a water inlet ball valve 121 and a water inlet stop valve 122, and the water inlet stop valve 122 is located between the water inlet ball valve 121 and the water outlet pipe 123. The compressed air pipeline 13 is connected to the existing compressed air of the blast furnace, and the air supply end of the compressed air pipeline 13 is connected to the water outlet pipe 123. The compressed air pipeline 13 is equipped with a ball valve 131 and a stop valve 132, and the stop valve 132 is located between the ball valve 131 and the water outlet pipe 123. The water inlet stop valve 122 and the air supply stop valve 132 are both arranged before the connection between the compressed air pipeline 13 and the water outlet pipe 123, so as to adjust the water inlet amount and the compressed air amount respectively through the water inlet stop valve 122 and the air supply stop valve 132 to adjust the intensity of water atomization.

[0025] In this embodiment, the diameter of the water inlet pipeline 12 is DN15-DN50, and the pressure is 0.5MPa-1.0MPa; the diameter of the compressed air pipeline 13 is DN25-DN50, and the pressure is 0.3MPa-0.8MPa. The water inlet stop valve 122 and the air supply stop valve 132 are used to adjust the pressure to a suitable level, and the water pressure is greater than the air pressure, so as to ensure smooth water discharge and better generate atomized cooling water.

[0026] In this embodiment, the compressed air pipeline 13 is tilted downward relative to the water outlet pipe 123. Specifically, the compressed air pipeline 13 is tilted downward relative to the water outlet pipe 123 at an angle of 25°-30°. The setting of this tilt angle can enable the compressed air and water to mix better and achieve a good atomization cooling effect.

[0027] In this embodiment, the water outlet pipe 123 is an annular pipe and the diameter of the annular pipe is the same as and parallel to the diameter of the oil pipe 100. The number of the atomizing nozzles 11 is several, specifically, the number of the atomizing nozzles 11 is eight, and the eight atomizing nozzles 11 are arranged at intervals on the side of the annular pipe facing the oil pipe 100. The arrangement of the eight atomizing nozzles 11 can ensure a wide area of ​​atomization spraying and a cooling effect, while avoiding the generation of a large number of water droplets.

[0028] After adopting this implementation scheme, the burning of the oil pipe 100 at the turntable of the opening machine or the oil leakage at the sealing ring is significantly reduced. Before using water mist cooling, the oil leakage of the oil pipe 100 needs to be dealt with three times a week on average, and after using water mist cooling, the oil leakage of the oil pipe 100 needs to be dealt with once every two weeks on average. The service life of the oil pipe 100 is further improved, thereby reducing the equipment maintenance cost and greatly reducing the workload of maintenance personnel.

[0029] The above description is a detailed description of the preferred feasible embodiment of the utility model, but the embodiment is not used to limit the scope of the patent application of the utility model. All equivalent changes or modified changes completed under the technical spirit suggested by the utility model should fall within the patent scope covered by the utility model.

Claims

1. A water atomization cooling system for the oil pipe at the turntable of a blast furnace tapping machine, characterized in that: The invention comprises a spray pipe assembly (1), a cooling water receiving pan (2) and a water supply pipe (3); the spray pipe assembly (1) comprises an atomizing nozzle (11) and a water supply pipe; the atomizing nozzle (11) is arranged above an oil pipe (100), and the water supply pipe is connected to the atomizing nozzle (11); the cooling water receiving pan (2) is sleeved below the oil pipe (100), and the diameter of the cooling water receiving pan (2) is larger than the diameter of the water spraying range of the atomizing nozzle (11); the water supply pipe (3) is connected to the cooling water receiving pan (2), and the water supply pipe (3) extends to the ground.

2. A water atomization cooling system for oil pipes at the turntable of a blast furnace tapping machine as claimed in claim 1, characterized in that: A drainage ditch (4) is provided on the ground, and the water diversion pipe (3) extends into the drainage ditch (4).

3. The water atomization cooling system for the oil pipe at the turntable of the blast furnace tapping machine according to claim 1, characterized in that: The water receiving pipeline comprises a water inlet pipeline (12) and a compressed air pipeline (13); the water inlet pipeline (12) comprises a water outlet pipe (123) and a water inlet pipe (124); the water outlet pipe (123) is in communication with the water inlet pipe (124); the water outlet pipe (123) is located above the oil pipe (100); the atomizing nozzle (11) is mounted on the water outlet pipe (123); the water inlet pipe (124) is mounted with a water inlet ball valve (121) and a water inlet valve (122). A water inlet stop valve (122), and the water inlet stop valve (122) is located between the water inlet ball valve (121) and the water outlet pipe (123); the compressed air pipeline (13) is connected to the water outlet pipe (123), and a supply ball valve (131) and an air supply stop valve (132) are installed on the compressed air pipeline (13), and the air supply stop valve (132) is located between the supply ball valve (131) and the water outlet pipe (123).

4. A water atomization cooling system for oil pipes at the turntable of a blast furnace tapping machine as claimed in claim 3, characterized in that: The compressed air pipeline (13) is inclined downward relative to the water outlet pipe (123).

5. A water atomization cooling system for oil pipes at the turntable of a blast furnace tapping machine as claimed in claim 4, characterized in that: The compressed air pipeline (13) is inclined downwardly at an angle of 25°-30° relative to the water outlet pipe (123).

6. A water atomization cooling system for oil pipes at the turntable of a blast furnace tapping machine as claimed in claim 3, characterized in that: The pipe diameter of the water inlet pipeline (12) is DN15-DN50, and the pressure is 0.5MPa-1.0MPa; the pipe diameter of the compressed air pipeline (13) is DN25-DN50, and the pressure is 0.3MPa-0.8MPa.

7. The water atomization cooling system for the oil pipe at the turntable of the blast furnace tapping machine according to claim 3, characterized in that: The water outlet pipe (123) is an annular pipe, and the diameter of the annular pipe is the same as the diameter of the oil pipe (100).

8. A water atomization cooling system for oil pipes at the turntable of a blast furnace tapping machine as claimed in claim 7, characterized in that: The number of the atomizing nozzles (11) is a plurality, and the plurality of atomizing nozzles (11) are arranged at intervals on a side of the annular tube facing the oil pipe (100).

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