Tundish sliding plate air hole testing device

Abstract

A tundish sliding plate vent hole testing device comprises a gas conveying pipe, the inlet end of the gas conveying pipe is communicated with gas supply equipment, a corresponding control box is arranged on the gas conveying pipe, monitoring equipment for monitoring and controlling gas in the gas conveying pipe in real time is arranged in the control box, and the control box is in linkage with all parts of the monitoring equipment. And the outlet end of the gas conveying pipe is communicated with the vent hole of the tundish sliding plate. According to the utility model, the quality of the tundish sliding plate can be rapidly and effectively detected, the failure rate and danger of casting caused by the quality of the air hole are reduced, the success rate of continuous casting casting is improved, the loss rate of continuous casting casting is reduced, and the economic benefit is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of air permeability testing, and in particular relates to a device for testing air permeability holes of a tundish slide plate. Background Art

[0002] The main functions of the tundish in the continuous casting process are to reduce pressure, stabilize flow, remove inclusions, store and adjust the temperature of molten steel. After the ladle starts pouring, the tundish slide is in a closed state, and the tundish absorbs heat from the molten steel. In order to prevent the molten steel from freezing at the slide and affecting the flow of the slide, the slide is provided with air holes, and argon gas is passed to stir the molten steel.

[0003] Qualified skateboard air holes can sufficiently stir the molten steel. If there are quality problems with the skateboard air holes, such as the air holes are not airtight or have low air permeability (large skateboard back pressure), the stirring effect on the molten steel will be insufficient, and cold steel will block the skateboard, causing continuous casting failure. The success rate of continuous casting directly affects the loss rate of the factory's production. If the loss rate is too high, it will seriously affect the factory's production efficiency. Utility Model Content

[0004] The utility model aims to provide a device for testing the air holes of the tundish slide plate on site, and to perform a back pressure test on the air holes of the slide plate before going online, so as to solve the technical problem that the air holes of some slide plates in the existing continuous casting process have quality problems and affect the success rate of continuous casting.

[0005] To achieve the above purpose, the specific technical solution of the utility model is as follows:

[0006] A device for testing the air holes of a tundish slide plate comprises a gas pipe, the inlet end of the gas pipe is connected to a gas supply device, a corresponding control box is provided on the gas pipe, a monitoring device for real-time monitoring and controlling the gas in the gas pipe is provided in the control box, the control box is linked to various components of the monitoring device, and the outlet end of the gas pipe is connected to the air holes of the tundish slide plate.

[0007] Furthermore, the monitoring equipment includes a flow meter, a pressure gauge and a control valve, all of which are installed on the gas pipeline and are linked to the control box.

[0008] Furthermore, the control box includes a shell, a gas pipe passes through the inside of the shell, and various components of the monitoring equipment are installed on the gas pipe inside the shell. A power supply and a controller are provided in the inner cavity of the shell, and a display and control buttons are provided on the shell of the control box, wherein the power supply is connected to the external power grid and is associated with all components in the control box including the monitoring equipment, controller, display and control buttons to provide electrical energy therefor, and the various components of the monitoring equipment are associated with the display and control buttons through the controller.

[0009] Furthermore, a quick connector is provided at the air outlet end of the air delivery pipe, and the air delivery pipe is connected to the air vent of the slide plate via the quick connector.

[0010] Furthermore, the air vent is provided on the skateboard, and a slot penetrating the skateboard wall is provided on the side wall of the air vent, an air outlet end of the slot is provided on the side wall of the air vent, and an air inlet end is provided on the outer side of the skateboard, a corresponding air inlet pipe is provided at the air inlet end of the slot, an air outlet of the air inlet pipe is connected with the air inlet end of the slot, and an air inlet of the air inlet pipe is connected with the air outlet end of the air delivery pipe, and an air inlet interface corresponding to the quick connector is provided at the air inlet of the air inlet pipe.

[0011] Furthermore, the gas pipe is a metal hose.

[0012] The utility model discloses a tundish slide plate air hole testing device can effectively detect the quality of the tundish slide plate air hole at the casting site, can quickly eliminate the slide plate with unqualified quality, reduces the probability of pouring failure caused by the air hole quality, reduces the accident rate of this link, improves the safety of the operation of this link, makes it more successful, reduces the loss rate of continuous casting, and makes it more economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the external structure of the control box of the utility model;

[0015] Explanation of the markings in the figure: 1. Gas supply equipment; 2. Gas pipe; 3. Control box; 31. Flow meter; 32. Pressure gauge; 33. Control valve; 34. Display; 35. Control button; 36. Shell; 4. Quick connector; 5. Slide plate; 51. Air vent; 52. Slot hole; 53. Inlet pipe; 54. Inlet interface; 55. Flow steel hole; 6. Power supply; 7. Controller. DETAILED DESCRIPTION

[0016] In order to better understand the purpose, structure and function of the utility model, the utility model is described in further detail below with reference to the accompanying drawings.

[0017] like Figure 1-2 As shown, the utility model comprises a gas pipe 2, on which a corresponding control box 3 is provided, and both ends of the gas pipe 2 are respectively connected to a gas supply device 1 and a gas hole 51 of a middle ladle skateboard 5, and the gas supply device 1 inputs gas to the gas hole 51 of the skateboard 5 through the gas pipe 2. During the gas input process, the control box 3 performs real-time detection of the gas in the gas pipe 2, and the staff can determine the ventilation condition of the gas hole 51 of the skateboard 5 according to the detection data of the control box 3.

[0018] The air inlet end of the gas pipe 2 is connected to the gas supply equipment 1. In this embodiment, the gas supply equipment 1 is an argon gas supply equipment. The gas supply equipment 1 introduces argon gas with stable pressure into the gas pipe 2. A control box 3 is provided in the middle and upper part of the gas pipe 2. The control box 3 is provided with a monitoring device for real-time monitoring and control of the gas in the gas pipe 2. The control box 3 protects the various components of the monitoring device to prevent them from being damaged. At the same time, the control box 3 is linked with the various components of the monitoring device. The control box 3 collects and displays the data of the various components of the monitoring device in real time, which is convenient for the staff to observe and monitor the gas situation in the gas pipe 2 in real time. A quick connector 4 is provided at the gas outlet end of the gas pipe 2. The gas pipe 2 can be quickly connected and disconnected with the air hole 51 of the slide plate 5 through the quick connector 4, which is convenient for quick docking with the air hole 51 of the middle package slide plate 5 during use, making the docking of the two more time-saving and labor-saving.

[0019] The monitoring equipment includes a flow meter 31, a pressure gauge 32 and a control valve 33, all of which are installed on the gas pipe 2. In this embodiment, the three are arranged in sequence from the inlet end to the outlet end of the gas pipe 2, wherein the flow meter 31 monitors the flow rate of the gas flowing through the gas pipe 2 in real time, the pressure gauge 32 monitors the back pressure of the gas in the gas pipe 2 in real time, and the control valve 33 is used to adjust the flow rate of the gas in the gas pipe 2. The three are all linked with the control box 3, wherein the data of the flow meter 31 and the pressure gauge 32 are collected and displayed in real time by the control box 3, and the opening of the control valve 33 can be adjusted in real time through the control box 3, so as to facilitate the staff to monitor and adjust the gas flow in the gas pipe 2 in real time.

[0020] The control box 3 includes a shell 36, the monitoring device is arranged in the shell 36 of the control box 3, the gas pipe 2 passes through the inside of the shell 36, and the various components of the monitoring device are installed on the gas pipe 2 inside the shell 36. The inner cavity of the shell 36 is provided with a power supply 6 and a controller 7. The shell 36 of the control box 3 is provided with a display 34 and a control button 35, wherein the power supply 6 is connected to the external power grid, and is associated with all components in the control box 3 including the monitoring device, the controller 7, the display 34 and the control button 35, and provides electrical energy for them. The display 34 is arranged in the middle and upper part of the front side wall of the shell 36 of the control box 3, and a plurality of control buttons 35 are arranged below the display 34. Button 35. In this embodiment, multiple control buttons 35 are evenly arranged in a matrix. The various components of the monitoring equipment are associated with the display 34 and the control buttons 35 through the controller 7. The data of the flow meter 31 and the pressure gauge 32 are collected by the controller 7 and displayed on the display 34. The staff can read them through the display 34. At the same time, under the action of the controller 7, the opening of the control valve 33 can be adjusted through the control button 35. Under the joint linkage of the flow meter 31 and the pressure gauge 32, the gas flow and pressure in the gas pipe 2 can also be preset, making the detection work more convenient and quick. A plc controller is used in this embodiment.

[0021] The slide plate 5 is provided with an air hole 51 and a steel flow hole 55. In this embodiment, the two are arranged side by side on the slide plate 5 of the tundish. By sliding the slide plate 5, the corresponding state of the two and the tundish can be changed. When the steel flow hole 55 corresponds to the tundish, the molten steel can flow out through the steel flow hole 55. When the air hole 51 corresponds to the tundish, the corresponding gas, such as argon, can be introduced into the tundish through the air hole 51 to stir the molten steel in the tundish to prevent it from freezing. The side wall of the air hole 51 is provided with a slot 52. The slot 52 is a through slot that runs through the wall of the slide plate 5. It is connected to the outside to supply gas to the air hole 51. The outlet of the slot 52 The air end is arranged on the side wall of the air vent 51, and its air inlet end is arranged on the outer side of the slide plate 5. The air inlet end of the slot hole 52 is connected with a corresponding air inlet pipe 53, the air outlet of the air inlet pipe 53 is connected with the air inlet end of the slot hole 52, and the air inlet of the air inlet pipe 53 is connected with the air outlet end of the air supply pipe 2. An air inlet interface 54 is arranged at the air inlet of the air inlet pipe 53, and the quick connector 4 at the air outlet end of the air supply pipe 2 corresponds to the air inlet interface 54. The two can be quickly connected and disconnected, so that the air vent 51 of the slide plate 5 can be more conveniently and quickly connected or disconnected with the test device, which can shorten the detection time, make the detection more convenient, quicker and more efficient.

[0022] Furthermore, the gas pipe 2 uses a metal hose. Compared with ordinary hoses, the metal hose has stronger pressure resistance, better heat resistance, and longer service life. Compared with ordinary metal pipes, the metal hose is lighter and easier to carry. It has certain flexibility and greater softness. When installed corresponding to the skateboard 5, it is also simpler and faster. Comprehensive comparison shows that the metal hose is more suitable for the ventilation pipeline requirements when testing the air vents 51 of the skateboard 5 at the tundish continuous casting site.

[0023] When in use, first connect the test device through its quick connector 4 to the air inlet interface 54 of the air vent 51 of the slide plate 5 to be tested, so that the air pipe 2 is connected to the air vent 51. After the connection is completed, adjust the control valve 33 through the control box 3 to adjust the gas flow rate in the air pipe 2 to a certain value. At this time, turn on the gas supply device 1, and the gas supply device 1 introduces argon gas with stable pressure into the air pipe 2 for a period of time. After the flow data of the flow meter 31 and the back pressure data of the pressure gauge 32 displayed on the control box 3 are stable, read the data of the two through the control box 3. At this time, if the back pressure data meets the corresponding control flow, the air vent 51 of the slide plate 5 meets the requirements, otherwise the air vent 51 of the slide plate 5 meets the requirements. The air hole 51 is unqualified and the skateboard 5 needs to be replaced. In this embodiment, the gas flow in the gas pipe 2 is set to 60L / min through the control valve 33. At this time, if the back pressure value of the back pressure gauge is not greater than 2bar, the back pressure of the air hole 51 of the skateboard 5 meets the requirement. In this way, the back pressure detection of the skateboard 5 is completed. At this time, you can feel the air outlet of the air hole 51 by hand, and feel whether the air outlet is uniform. If it is uniform, the air hole 51 of the skateboard 5 is qualified. In this way, the overall test of the air hole 51 of the skateboard 5 is completed, and the skateboard 5 can be put into use. If the air hole 51 has uneven air outlet and leakage at the edge, the air hole 51 of the skateboard 5 is unqualified and cannot be used online. A new skateboard 5 needs to be replaced and retested.

[0024] The utility model has a simple structure and can effectively screen the tundish slide plate 5 with workmanship that meets the requirements, effectively exclude the slide plate 5 with unqualified workmanship, and prevent the slide plate 5 from failing to cast due to cold steel formed in the air vent 51 when the tundish is cast. This improves the success rate of continuous casting, reduces the occurrence of accidents in this link, reduces the loss rate in this link, and also improves the overall economic benefits of continuous casting.

[0025] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A tundish slide plate air hole testing device, characterized in that: The invention comprises a gas pipeline (2), the inlet end of the gas pipeline (2) is connected to a gas supply device (1), a corresponding control box (3) is arranged on the gas pipeline (2), a monitoring device for real-time monitoring and controlling the gas in the gas pipeline (2) is arranged in the control box (3), the control box (3) and various components of the monitoring device are linked, and the outlet end of the gas pipeline (2) is connected to a gas vent (51) of a tundish slide plate (5).

2. The vent hole testing device for the tundish slide plate according to claim 1 is characterized in that: The monitoring equipment comprises a flow meter (31), a pressure gauge (32) and a control valve (33), all of which are installed on the gas transmission pipe (2) and are linked to the control box (3).

3. The vent hole testing device for the tundish slide plate according to claim 1 is characterized in that: The control box (3) comprises a shell (36), a gas pipe (2) passes through the inside of the shell (36), and various components of the monitoring device are installed on the gas pipe (2) in the shell (36). A power source (6) and a controller (7) are arranged in the inner cavity of the shell (36). A display (34) and a control button (35) are arranged on the shell (36) of the control box (3), wherein the power source (6) is connected to an external power grid and is associated with all components in the control box (3) including the monitoring device, the controller (7), the display (34) and the control button (35) to provide electrical energy therefor. The various components of the monitoring device are associated with the display (34) and the control button (35) through the controller (7).

4. The vent hole testing device for the tundish slide plate according to claim 1, characterized in that: The gas outlet end of the gas delivery pipe (2) is provided with a quick connector (4), and the gas delivery pipe (2) is connected to the air vent (51) of the slide plate (5) via the quick connector (4).

5. The vent hole testing device for the tundish slide plate according to claim 4 is characterized in that: The air vent (51) is arranged on the slide plate (5); a slot (52) penetrating the slide plate wall (5) is arranged on the side wall of the air vent (51); an air outlet end of the slot (52) is arranged on the side wall of the air vent (51); an air inlet end of the slot (52) is arranged on the outer side surface of the slide plate (5); a corresponding air inlet pipe (53) is arranged at the air inlet end of the slot (52); an air outlet of the air inlet pipe (53) is connected to the air inlet end of the slot (52); an air inlet of the air inlet pipe (53) is connected to the air outlet end of the air delivery pipe (2); an air inlet interface (54) corresponding to the quick connector (4) is arranged at the air inlet of the air inlet pipe (53).

6. The vent hole testing device for a tundish slide plate according to claim 1, characterized in that: The gas delivery pipe (2) is a metal hose.

Images