Molten steel temperature detecting and sampling integrated device applied to vacuum furnace
By designing a liftable and lowered temperature detection and sampling integrated device in a vacuum furnace, the time difference between the steel temperature and component detection is solved, synchronous operation is achieved, detection consistency and efficiency are improved, and equipment costs are reduced.
Patent Information
- Application Number
- CN202421016995.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-10
AI Technical Summary
In high-temperature smelting furnaces, temperature detection and sampling of the steel are usually carried out separately, resulting in a time difference between the two operations, affecting the consistency of component detection and temperature, and increasing space occupation and equipment costs.
A liquid steel temperature detection and sampling integrated device is designed, including a sealed chamber, a temperature detection mechanism and a sampling mechanism. Both are liftable structures. The connection or isolation between the sealed chamber and the vacuum reaction chamber is controlled by a control valve to achieve temperature detection and detection. The sampling is performed synchronously.
It ensures the synchronization of temperature detection and sampling operations, reduces time difference, improves the consistency of liquid steel component detection and temperature, and reduces space occupation and equipment costs.
Smart Images
Figure CN222188392U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metallurgy, in particular to a molten steel temperature detection and sampling integrated device applied to a vacuum furnace. Background Art
[0002] The pouring temperature in a high-temperature melting furnace has a great influence on the quality of steel castings. When the pouring temperature is too high, the shrinkage of the molten steel increases, the gas content increases, and the thermal effect of the molten steel on the casting mold is enhanced, which makes the steel castings prone to defects such as shrinkage, pores, deformation, cracks and sand adhesion; when the pouring temperature is too low, the fluidity of the molten steel is poor, which easily causes defects such as cold shut, insufficient pouring, and slag inclusion in the steel castings. At the same time, whether the composition of the molten steel corresponding to different temperatures is different is also a problem of concern. At present, the temperature detection and sampling of the molten steel are usually carried out separately, which will cause a time difference between the two operations, which will not only affect the detection of the molten steel composition and the consistency of the temperature, but also restrict the operation efficiency and increase space occupancy and equipment costs. Utility Model Content
[0003] The utility model aims to provide an integrated device for temperature detection and sampling of molten steel applied to a vacuum furnace, which can solve the technical problems mentioned in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel liquid temperature detection and sampling integrated device applied to a vacuum furnace, comprising a sealed chamber and a temperature detection mechanism and a sampling mechanism connected to the inside of the sealed chamber, wherein the temperature detection mechanism and the sampling mechanism are respectively constructed as liftable structures, which can extend into the crucible of a vacuum reaction chamber in a lowered state, and a control valve is connected between the sealed chamber and the vacuum reaction chamber, and the control valve is used to control the connection or isolation between the sealed chamber and the vacuum reaction chamber.
[0005] As a preferred solution, the temperature detection mechanism includes a temperature measuring probe and a temperature detection lifting mechanism for driving the temperature measuring probe to rise and fall, and the sampling mechanism includes a sampling cup assembly and a sampling lifting mechanism for driving the sampling cup assembly to rise and fall.
[0006] As a preferred solution, the sealed chamber is provided with a first sealing door that can be opened and closed at a position corresponding to the temperature measuring probe and the sampling cup assembly. The provision of the first sealing door that can be opened and closed can facilitate the taking and placing of the temperature measuring probe and the sampling cup assembly.
[0007] As a preferred solution, the sealed chamber is also connected to a control component for controlling the automatic opening and closing of the first sealed door.
[0008] As a preferred solution, the control component includes two sets of slides that slide with the upper and lower ends of the first sealing door respectively. The slides are connected to the sealed chamber, and one of the slides is connected to a driving cylinder for driving the first sealing door to slide open and close.
[0009] As a preferred embodiment, the control component includes a tensioning cylinder connected to both side ends of the sealed chamber, the piston rod end of the tensioning cylinder is connected to a tensioning plate, and the side end of the first sealing door is provided with an opening plate or an opening groove through which the tensioning cylinder piston rod can pass.
[0010] As a preferred solution, the sealed chamber is further provided with a second seal door which can be opened and closed at the upper end, and the second seal door corresponds to the upper part of the first seal door. The provision of the second seal door which can be opened and closed can facilitate the inspection and maintenance of the accessories inside the sealed chamber.
[0011] As a preferred solution, the outer wall of the sealed chamber is connected to an oxygen content detection pipeline, and the oxygen content detection pipeline is used to detect the oxygen content in the sealed chamber to reduce the influence of the oxygen content on the composition of the molten steel.
[0012] As a preferred solution, the outer wall of the sealed chamber is connected to a vacuum resistance gauge, and the vacuum resistance gauge is used to measure the vacuum degree in the sealed chamber.
[0013] As a preferred solution, the outer wall of the sealed chamber is connected with a gas supply pipeline for introducing inert gas.
[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the integrated device for temperature detection and sampling of molten steel applied to a vacuum furnace provided by the utility model can realize separate temperature detection and separate sampling by separately arranging a temperature detection mechanism and a sampling mechanism, and can also achieve synchronous temperature detection and sampling, thereby ensuring the synchronization of temperature detection and sampling operations, reducing the time difference in switching between the two operations, and effectively improving the consistency of molten steel composition detection and temperature. At the same time, it can also reduce space occupancy and reduce equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the integrated device for detecting temperature and sampling molten steel in a vacuum furnace according to an embodiment of the utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the sealed chamber, the temperature detection mechanism and the sampling mechanism in the embodiment of the utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the sealed chamber and the first sealed door in the embodiment of the utility model;
[0018] Figure 4 It is a schematic structural diagram of the first sealing door in an embodiment of the utility model.
[0019] The meaning of each number in the figure is:
[0020] 1. Vacuum reaction chamber; 2. Sealed chamber; 3. Temperature detection mechanism; 31. Temperature probe; 32. Drive motor; 33. Magnetic fluid seal; 34. Gear shaft; 35. Rack; 36. Linear guide; 37. Slider; 4. Sampling mechanism; 41. Sampling cup assembly; 5. Control valve; 6. First sealing door; 61. Opening plate; 62. Opening groove; 71. Slide; 72. Drive cylinder; 73. Connecting plate; 74. Limit block; 75. Tension cylinder; 76. Tension sheet; 8. Oxygen content detection pipeline; 9. Vacuum resistance gauge; 10. Air supply pipeline; 11. Inflation pipeline; 12. Second sealing door; 13. Manual locking handle; 14. Sealing strip; 15. Visual window. DETAILED DESCRIPTION
[0021] 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.
[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0023] See also Figure 1 This embodiment discloses an integrated device for temperature detection and sampling of molten steel applied to a vacuum furnace, including a sealed chamber 2 arranged above a vacuum reaction chamber 1, wherein the outlet end of the sealed chamber 2 is connected to the inlet end of the vacuum reaction chamber 1. A crucible for holding molten steel is provided in the vacuum reaction chamber 1, and a temperature detection mechanism 3 and a sampling mechanism 4 are provided in the sealed chamber 2, which cooperate with the vacuum reaction chamber 1 respectively and are used for temperature detection and sampling of molten steel. In this embodiment, by integrating the molten steel temperature detection and sampling mechanism 4 into one, the synchronization of the temperature detection and sampling operations can be ensured, the time difference of switching between the two operations can be reduced, and the consistency of the molten steel composition detection and temperature can be effectively improved. At the same time, the space occupation can be reduced and the equipment cost can be reduced.
[0024] The temperature detection mechanism 3 and the sampling mechanism 4 are respectively constructed as a liftable structure, which can be extended into the crucible in the lowered state to detect the temperature of the molten steel or sample the molten steel. The temperature detection mechanism 3 includes a temperature probe 31 and a temperature detection lifting mechanism for driving the temperature probe 31 to rise and fall, and the sampling mechanism 4 includes a sampling cup assembly 41 and a sampling lifting mechanism for driving the sampling cup assembly 41 to rise and fall. The temperature detection lifting mechanism and the sampling lifting mechanism are both connected to the sealed chamber 2.
[0025] Specifically, the sealed chamber 2 is formed by enclosing a square shell with a certain height, and the square shell structure is convenient for the installation of the temperature detection lifting mechanism and the sampling lifting mechanism. An outlet flange is fixedly provided at the outlet end of the sealed chamber 2, and an inlet flange is fixedly provided at the inlet end of the vacuum reaction chamber 1. A control valve 5 is connected between the outlet flange and the inlet flange. The control valve 5 is used to control the connection or isolation between the sealed chamber 2 and the vacuum reaction chamber 1, so that the two have the ability to independently maintain their sealing state. The control valve 5 can be a pneumatic gate valve or a butterfly valve.
[0026] Combination Figure 2 In this embodiment, the temperature detection lifting mechanism and the sampling lifting mechanism are both linear drive mechanisms. The temperature detection lifting mechanism includes a drive motor 32 and a transmission assembly. The transmission assembly can adopt a transmission structure such as a gear rack 35, a ball screw or a synchronous belt. In this embodiment, the transmission assembly is preferably a gear rack 35 transmission structure with higher transmission efficiency and precision. Specifically, a flange connection end is provided at the side end of the sealed chamber 2, and the drive motor 32 is fixedly connected to the flange connection end through a magnetic fluid seal 33. The output shaft of the drive motor 32 is connected to a gear shaft 34 through a coupling. The gear end of the gear shaft 34 is meshed and connected to the rack 35. The rack 35 is arranged along the height direction of the sealed chamber 2. The temperature probe 31 is detachably connected to the bottom end of the rack 35 through a connecting sleeve. The connecting sleeve can adopt a threaded joint, a flexible joint or other structures. In this embodiment, the inner wall of the sealed chamber 2 is also fixed with a connecting boss along the height direction, and a linear guide 36 is connected through the connecting boss. The rack 35 is slidably connected to the linear guide 36 through the slider 37, and then the temperature probe 31 can be driven to rise and fall by the driving motor 32. The sampling lifting mechanism also adopts the structure of the motor and the transmission assembly, and its structure is not repeated here. The sampling cup assembly 41 includes a sampling cup and a sampling arm fixedly connected to its side end, and the sampling arm is connected to the output end of the transmission assembly through a mounting sleeve and fastened with a locking member.
[0027] like Figure 3 , Figure 4As shown, the temperature probe 31 and the sampling cup assembly 41 both correspond to the lower end position of the sealed chamber 2. To facilitate the placement of the temperature probe 31 and the sampling cup assembly 41, preferably, the sealed chamber 2 is also provided with a first sealing door 6 that can be opened and closed at the lower end position. The first sealing door 6 can adopt an automatic opening and closing structure or a manual opening and closing structure, which can be selected according to actual needs. In practical applications, the opening and closing frequency of the first sealing door 6 is relatively high. To improve the operating efficiency, the first sealing door 6 is preferably constructed as an automatic opening and closing structure. In this embodiment, the sealed chamber 2 is also connected to a control assembly for controlling the automatic opening and closing of the first sealing door 6. The specific structure is that the control assembly includes two sets of slides 71 fixedly connected to the sealed chamber 2, and the two sets of slides 71 are respectively slidably matched with the upper and lower ends of the first sealing door 6, and one of the slides 71 is fixedly connected to a driving cylinder 72 for driving the first sealing door 6 to slide and open, and the corresponding end of the first sealing door 6 is connected to the piston rod of the driving cylinder 72 through a connecting plate 73. A stop block 74 for limiting and positioning the first sealing door 6 is provided at one side end of the sealing chamber 2 to ensure that the first sealing door 6 moves into position. The control assembly further includes a tensioning cylinder 75 fixedly connected to both side ends of the sealing chamber 2, the tensioning cylinder 75 is used to seal the first sealing door 6 and the sealing chamber 2, and a tensioning sheet 76 is connected to the piston rod end of the tensioning cylinder 75. Correspondingly, an opening plate 61 or an opening groove 62 is provided at the side end of the first sealing door 6 through which the piston rod of the tensioning cylinder 75 can pass. During the movement of the first sealing door 6, the piston rod of the tensioning cylinder 75 extends into the opening plate 61 or the opening groove 62, and the tensioning cylinder 75 can tighten the first sealing door 6 toward the direction close to the sealing chamber 2 by controlling the movement of the tensioning sheet 76.
[0028] See again Figure 1 The outer wall of the sealed chamber 2 is also connected with an oxygen content detection pipeline 8 and a vacuum resistance gauge 9, and is also connected with an air supply pipeline 10 and an air charging pipeline 11. The oxygen content detection pipeline 8 is used to detect the oxygen content in the sealed chamber 2 to reduce the influence of the oxygen content on the composition of the molten steel; the vacuum resistance gauge 9 is used to measure the vacuum degree in the sealed chamber 2; the air supply pipeline 10 is used to introduce inert gases such as argon and nitrogen into the sealed chamber 2 to increase the safety factor. The air supply pipeline 10 is connected with a valve body for inert gas flow and on-off control and a flow meter for flow monitoring. The valve body can be a pneumatic butterfly valve. On the other hand, by setting the air supply pipeline 10, the sealed chamber 2 is supplemented with inert gas of a certain pressure and flow, so that the air pressure of the sealed chamber 2 is higher than the air pressure of the vacuum reaction chamber 1, which can prevent abnormal conditions such as smoke backflow. The air charging pipeline 11 is used to supplement the atmosphere into the sealed chamber 2, which is convenient for opening the sealed chamber 2. The air charging pipeline 11 is connected with a vacuum angle valve for medium flow and on-off control.
[0029] In order to facilitate the inspection and maintenance of the internal accessories of the sealed chamber 2, preferably, the sealed chamber 2 is also provided with a second sealing door 12 that can be opened and closed at the upper end position, and the second sealing door 12 corresponds to the top of the first sealing door 6. The second sealing door 12 can adopt an automatic opening and closing structure consistent with the control structure of the first sealing door 6, or can adopt a manual opening and closing form, which can be selected according to actual needs. In practical applications, the opening and closing frequency of the second sealing door 12 is relatively low. In order to reduce costs, the second sealing door 12 is preferably constructed as a manual opening and closing structure, one side of which is hinged to the side end of the sealed chamber 2, and the other end is locked with a manual locking handle 13. It can be understood that a sealing strip 14 is connected between the connecting ends of the first sealing door 6, the second sealing door 12 and the corresponding sealed chamber 2 to ensure the sealing of the sealed chamber 2.
[0030] Preferably, the side wall of the sealed chamber 2 and the top cover of the vacuum reaction chamber 1 are also connected with visual windows 15 respectively, and the visual windows 15 can facilitate the staff to observe the operating status in the sealed chamber 2 and the vacuum reaction chamber 1.
[0031] It will be understood by those skilled in the art that both the sealed chamber 2 and the vacuum reaction chamber 1 are provided with reserved vacuum pipeline connection interfaces, and in actual application, both need to be evacuated.
[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. An integrated device for temperature detection and sampling of molten steel in a vacuum furnace. It is characterized in that The invention comprises a sealed chamber (2) and a temperature detection mechanism (3) and a sampling mechanism (4) connected to the inside of the sealed chamber (2); the temperature detection mechanism (3) and the sampling mechanism (4) are respectively constructed as a liftable structure, and can extend into a crucible of a vacuum reaction chamber (1) in a lowered state; a control valve (5) is connected between the sealed chamber (2) and the vacuum reaction chamber (1); the control valve (5) is used to control the connection or isolation between the sealed chamber (2) and the vacuum reaction chamber (1).
2. The integrated device for temperature detection and sampling of molten steel applied to a vacuum furnace according to claim 1, It is characterized in that The temperature detection mechanism (3) comprises a temperature measuring probe (31) and a temperature detection lifting mechanism for driving the temperature measuring probe (31) to rise and fall, and the sampling mechanism (4) comprises a sampling cup assembly (41) and a sampling lifting mechanism for driving the sampling cup assembly (41) to rise and fall.
3. The integrated device for temperature detection and sampling of molten steel for vacuum furnace according to claim 2, It is characterized in that The sealed chamber (2) is provided with a first sealed door (6) that can be opened and closed at a position corresponding to the temperature measuring probe (31) and the sampling cup assembly (41).
4. The integrated device for temperature detection and sampling of molten steel for vacuum furnace according to claim 3, It is characterized in that The sealed chamber (2) is also connected to a control component for controlling the automatic opening and closing of the first sealed door (6).
5. The integrated device for temperature detection and sampling of molten steel for vacuum furnace according to claim 4, It is characterized in that The control assembly comprises two sets of slides (71) respectively slidably matched with the upper and lower ends of the first sealing door (6), the slides (71) being connected to the sealed chamber (2), wherein one of the slides (71) is connected to a driving cylinder (72) for driving the first sealing door (6) to slide open and close.
6. The integrated device for temperature detection and sampling of molten steel for vacuum furnace according to claim 4, It is characterized in that The control assembly comprises a tensioning cylinder (75) connected to both side ends of the sealed chamber (2); a tensioning plate (76) is connected to the piston rod end of the tensioning cylinder (75); and an opening plate (61) or an opening groove (62) through which the piston rod of the tensioning cylinder (75) can pass is provided at the side end of the first sealed door (6).
7. The integrated device for temperature detection and sampling of molten steel for vacuum furnace according to claim 3, It is characterized in that The sealed chamber (2) is also provided with a second sealed door (12) which can be opened and closed at the upper end, and the second sealed door (12) corresponds to the upper part of the first sealed door (6).
8. The integrated device for temperature detection and sampling of molten steel for vacuum furnace according to claim 1, It is characterized in that The outer wall of the sealed chamber (2) is connected to an oxygen content detection pipeline (8).
9. The integrated device for temperature detection and sampling of molten steel for vacuum furnace according to claim 1, It is characterized in that The outer wall of the sealed chamber (2) is connected to a vacuum resistance gauge (9).
10. The integrated device for temperature detection and sampling of molten steel for vacuum furnace according to claim 1, It is characterized in that The outer wall of the sealed chamber (2) is connected to a gas supply pipeline (10) for introducing inert gas.