Electron beam melting furnace observation window structure

Abstract

The utility model discloses an electron beam smelting furnace observation window structure belongs to electron beam smelting furnace technical field, an electron beam smelting furnace observation window structure, including annular base, still include: the top plate of dismantling connection in the top of water cooling jacket, the top plate top is fixedly arranged with first installation cylinder, the top plate is fixedly arranged with first cooling cover, and the one end of first cooling cover that first installation cylinder extends sets up transparent observation board, first cooling cover one end is fixedly arranged with water inlet component, and first cooling cover other end is fixedly arranged with first water outlet pipe, and water inlet component and first water outlet pipe all are linked together with first cooling channel, the utility model discloses a top plate is set up on the water cooling jacket and is dismantled, and the first cooling cover is fixedly arranged on the top plate top, and the first installation cylinder of installing transparent observation board passes through from first cooling cover, when cooling water flows along first cooling channel, and cooling water will flow from the outer wall of first installation cylinder, realizes the cooling of first installation cylinder, and the cooling of first installation cylinder, improves use effect.

Description

Technical Field

[0001] This utility model relates to the field of electron beam melting furnace technology, and in particular to an observation window structure for an electron beam melting furnace. Background Technology

[0002] An electron beam melting furnace is an advanced metallurgical device that uses a high-speed electron beam to bombard metallic raw materials, heating and melting them. It is suitable for refining and manufacturing high-purity metals, alloys, and refractory metals. During the material melting process, it is necessary to monitor the melting situation inside the furnace in real time to ensure process control; therefore, observation windows are installed on the electron beam melting furnace to observe the melting process.

[0003] Currently, the main components of an observation window include: a window frame, typically made of metal materials such as stainless steel, which has high strength and corrosion resistance, used to fix and support other components of the observation window, while ensuring a sealed connection with the furnace body to prevent leakage of the vacuum environment inside the furnace; a transparent observation plate, usually made of tempered glass, heat-resistant glass, quartz glass, or lead glass; a sealing ring / sealing adhesive, generally made of rubber, silicone, or fluororubber, which has good elasticity and sealing properties, installed between the window frame and the transparent observation plate, and at the connection between the window frame and the furnace body, ensuring a good seal between the observation window and the furnace body to prevent leakage of gas, dust, and heat inside the furnace; a water-cooling jacket, some observation windows are equipped with a water-cooling jacket, which uses circulating water to reduce the temperature of the observation window and prevent deformation or damage due to prolonged exposure to high temperatures; the water-cooling jacket is usually made of metal pipes and connected to an external cooling water source; and a rotating baffle, installed inside the observation window with slits, allowing adjustment of the observation angle and control of the light entering the observation window, while also providing some dust prevention and protection.

[0004] Although the existing observation window is equipped with a water-cooling jacket to cool the high-temperature gas entering the observation window, and works with the rotating baffle to reduce the direct contact between the high-temperature gas and the glass inside the observation window, the lack of a direct cooling structure around the glass results in poor cooling effect around the glass, which is difficult to meet the usage requirements. Utility Model Content

[0005] The purpose of this invention is to solve the problem of poor cooling effect in the existing technology, which makes it difficult to meet the requirements of use, and to propose an observation window structure for an electron beam melting furnace.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An observation window structure for an electron beam melting furnace includes an annular base, a water-cooling jacket fixedly mounted on the inner wall of the annular base, and a rotating baffle rotatably mounted inside the annular base. It also includes a top plate detachably connected to the top of the water-cooling jacket. A first mounting cylinder is fixedly mounted on the top of the top plate, and a first cooling shroud is fixedly mounted on the top plate. A first cooling channel is formed between the inner wall of the first cooling shroud and the top of the top plate. A transparent observation plate is mounted on one end of the first mounting cylinder extending beyond the first cooling shroud. A water inlet assembly is fixedly mounted on one end of the first cooling shroud, and a first water outlet pipe is fixedly mounted on the other end of the first cooling shroud. Both the water inlet assembly and the first water outlet pipe are connected to the first cooling channel.

[0008] To ensure the water supply effect to the first cooling cover, preferably, the water inlet assembly includes a first water inlet pipe and a second water inlet pipe, which are respectively fixedly installed on the side wall and top of one end of the first cooling cover, and both the first water inlet pipe and the second water inlet pipe are connected to the first cooling channel.

[0009] To facilitate observation of the furnace interior through a transparent observation plate, preferably, a base plate is detachably provided at the bottom of the water-cooling jacket. The base plate has a through hole coaxial with the first mounting cylinder, and the inner diameter of the through hole is larger than the inner diameter of the first mounting cylinder.

[0010] To facilitate cooling of the space inside the water-cooling jacket, a second cooling cover with an arc-shaped structure is further fixedly installed at the bottom of the base plate. A second cooling channel is formed between the inner wall of the second cooling cover and the bottom of the base plate, and a fourth water inlet pipe and a third water outlet pipe are fixedly installed on the second cooling cover.

[0011] Preferably, the water-cooling jacket has an arc-shaped cooling groove, and the outer wall of the annular base is fixedly provided with a third water inlet pipe and a second water outlet pipe. The third water inlet pipe and the second water outlet pipe are both connected to the cooling groove, and a partition is fixedly provided in the cooling groove. The third water inlet pipe and the second water outlet pipe are respectively located on both sides of the partition.

[0012] Preferably, a second mounting cylinder is fixedly installed on the top plate, and a mounting plate is fixedly installed inside the second mounting cylinder by a second bolt. A motor for driving the rotating baffle is fixedly installed on the mounting plate.

[0013] Compared with the prior art, the present invention provides an observation window structure for an electron beam melting furnace, which has the following beneficial effects:

[0014] 1. The observation window structure of the electron beam melting furnace is achieved by removing and installing a top plate on the water cooling jacket, fixing a first cooling cover on the top of the top plate, and installing a first mounting cylinder with a transparent observation plate through the first cooling cover. When cooling water flows along the first cooling channel, the cooling water will flow through the outer wall of the first mounting cylinder, thereby cooling and reducing the temperature of the first mounting cylinder and improving the performance.

[0015] 2. The observation window structure of the electron beam melting furnace is designed with a first water inlet pipe and a second water inlet pipe fixedly installed on the first cooling shroud. During normal use, cooling water enters the first cooling shroud from the first water inlet pipe. When the first water inlet pipe becomes blocked, the second water inlet pipe is opened, and cooling water can enter the first cooling shroud through the second water inlet pipe, ensuring continuous cooling effect.

[0016] All parts not mentioned in this device are the same as or can be implemented using existing technology. This utility model removes and installs a top plate on the water cooling jacket, fixes a first cooling cover on the top of the top plate, and installs a first mounting cylinder with a transparent observation plate through the first cooling cover. When cooling water flows along the first cooling channel, the cooling water will flow through the outer wall of the first mounting cylinder, thereby cooling and reducing the temperature of the first mounting cylinder and improving the performance. Attached Figure Description

[0017] Figure 1 This invention provides a schematic diagram of the structure of an observation window for an electron beam melting furnace. Figure 1 ;

[0018] Figure 2 This invention provides a schematic diagram of the structure of an observation window for an electron beam melting furnace. Figure 2 ;

[0019] Figure 3 This invention provides a schematic diagram of the structure of an observation window for an electron beam melting furnace. Figure 3 ;

[0020] Figure 4 This is a cross-sectional view of the observation window structure of an electron beam melting furnace proposed in this utility model;

[0021] Figure 5 This utility model proposes an observation window structure for an electron beam melting furnace. Figure 4 Enlarged view of section A.

[0022] In the diagram: 1. Top plate; 101. First mounting cylinder; 102. Second mounting cylinder; 2. First cooling cover; 201. First water inlet pipe; 202. Second water inlet pipe; 203. First water outlet pipe; 3. Water cooling jacket; 301. Annular base; 302. Cooling tank; 303. Third water inlet pipe; 304. Second water outlet pipe; 4. Base plate; 5. Second cooling cover; 501. Fourth water inlet pipe; 502. Third water outlet pipe; 6. Motor; 601. Mounting plate; 7. Rotating baffle; 701. Slit. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Example:

[0026] Reference Figures 1-5An observation window structure for an electron beam melting furnace includes an annular base 301. A water-cooling jacket 3 is fixedly installed on the inner wall of the annular base 301. Here, the water-cooling jacket 3 is fixedly connected to the inner wall of the annular base 301 by welding. A rotating baffle 7 is rotatably installed inside the annular base 301. This not only prevents damage from splashes, but also reduces the impact of heat radiation. During electron beam melting, the metal material is heated to extremely high temperatures and melts, which may produce splashed droplets or particles. If these substances directly impact the observation window, they will cause physical damage or even destroy the transparency of the observation window. The high temperature during the melting process releases a large amount of heat radiation. Long-term exposure to this environment will cause aging or deformation of the observation window material. The rotating baffle 7 can block the observation window when observation is not needed, thereby reducing the impact of this heat radiation. Multiple circumferentially distributed slits 701 are opened on the rotating baffle 7. When the rotating baffle 7 rotates, according to the persistence of vision effect, the situation inside the furnace can be observed through the rotating baffle 7, similar to how the view behind the fan blades can be observed when the fan blades are rotating. It also includes: a top plate 1 that can be detached from the top of the water-cooling jacket 3; a handle fixedly installed on the top of the top plate 1, preferably two handles symmetrically arranged for easy transfer of the top plate 1; a first mounting cylinder 101 fixedly installed on the top of the top plate 1; a second mounting cylinder 102 fixedly installed on the top plate 1; the top of the second mounting cylinder 102 is closed and the bottom is open; a mounting plate 601 is fixedly installed inside the second mounting cylinder 102 by a second bolt; a channel is opened on the mounting plate 601 to connect the bottom and top of the mounting plate 601; a motor 6 for driving the rotating baffle 7 is fixedly installed on the mounting plate 601; a power sealing wire interface is fixedly installed on the side wall of the second mounting cylinder 102 for easy power supply to the motor 6; an argon gas filling pipe is fixedly installed on the top of the second mounting cylinder 102; a first cooling cover 2 is fixedly installed on the top plate 1; and the inner wall of the first cooling cover 2 is connected to the top of the top plate 1. A first cooling channel is formed between the parts. A transparent observation plate is provided at one end of the first mounting cylinder 101 extending out of the first cooling cover 2. That is, the first mounting cylinder 101 passes through the first cooling cover 2. The transparent observation plate is preferably made of lead glass or quartz glass, with the lead glass located above the quartz glass. A sealing cover is threadedly connected to one end of the first mounting cylinder 101 extending out of the first cooling cover 2 by a first bolt. The transparent observation plate is installed inside the sealing cover. In use, by placing the transparent observation plate inside the sealing cover and tightening the first bolt, the top and bottom of the transparent observation plate abut against the sealing cover and the first mounting cylinder 101, respectively. A sealing gasket is provided at the joint, which not only facilitates the fixing of the transparent observation plate but also improves the sealing effect. A water inlet assembly is fixedly provided at one end of the first cooling cover 2, and a first water outlet pipe 203 is fixedly provided at the other end of the first cooling cover 2. Both the water inlet assembly and the first water outlet pipe 203 are connected to the first cooling channel.

[0027] In use, the top plate 1 is removed from the water cooling jacket 3 and a first cooling cover 2 is fixed on the top of the top plate 1. The first mounting cylinder 101 with a transparent observation plate passes through the first cooling cover 2. When the cooling water flows along the first cooling channel, the cooling water will flow through the outer wall of the first mounting cylinder 101 to cool and lower the temperature of the first mounting cylinder 101, thereby improving the performance.

[0028] Reference Figure 1 and Figure 2 Here, we design the water inlet assembly as a first water inlet pipe 201 and a second water inlet pipe 202. The first water inlet pipe 201 and the second water inlet pipe 202 are respectively fixed to the side wall and top of one end of the first cooling cover 2, and both the first water inlet pipe 201 and the second water inlet pipe 202 are connected to the first cooling channel. In use, by fixing the first water inlet pipe 201 and the second water inlet pipe 202 on the first cooling cover 2, under normal use, cooling water enters the first cooling cover 2 from the first water inlet pipe 201. When the first water inlet pipe 201 is blocked, the second water inlet pipe 202 is opened, and cooling water can enter the first cooling cover 2 through the second water inlet pipe 202 to ensure continuous cooling effect.

[0029] Reference Figures 2-4 A base plate 4 is installed at the bottom of the water-cooled jacket 3. Here, both the top plate 1 and the base plate 4 are threaded to the water-cooled jacket 3 using a third bolt. That is, the third bolt passes through the base plate 4, the water-cooled jacket 3, and the top plate 1 in sequence, extending out from the top of the top plate 1, and is then connected to the third bolt with a nut, thereby fixing the top plate 1 and the base plate 4 to the water-cooled jacket 3. An installation tube for installing vacuum leak detection is fixedly installed on the base plate 4. Sealing rings are installed at the joints between the top plate 1, the base plate 4, and the water-cooled jacket 3 to improve the sealing effect and reduce leakage. A through hole coaxial with the first mounting cylinder 101 is opened on the base plate 4, and the inner diameter of the through hole is larger than the inner diameter of the first mounting cylinder 101. During observation, the line of sight can pass through the first mounting cylinder 101 and the through hole, avoiding obstruction of the line of sight and facilitating observation of the furnace interior.

[0030] Reference Figures 2-4 A second cooling cover 5 with an arc-shaped structure is fixedly installed at the bottom of the base plate 4. A second cooling channel is formed between the inner wall of the second cooling cover 5 and the bottom of the base plate 4. A fourth water inlet pipe 501 and a third water outlet pipe 502 are fixedly installed on the second cooling cover 5. In use, by fixing the second cooling cover 5 on the base plate 4, cooling water enters the second cooling channel through the fourth water inlet pipe 501 and then flows out from the third water outlet pipe 502. This can cool the space enclosed between the base plate 4 and the top plate 1, thereby further improving the cooling effect.

[0031] Reference Figure 4 and Figure 5 A cooling groove 302 with an arc-shaped structure is provided inside the water-cooling jacket 3. A third water inlet pipe 303 and a second water outlet pipe 304 are fixedly installed on the outer wall of the annular base 301. Both the third water inlet pipe 303 and the second water outlet pipe 304 are connected to the cooling groove 302. A partition is fixedly installed inside the cooling groove 302, with the third water inlet pipe 303 and the second water outlet pipe 304 located on both sides of the partition. This prevents the cooling water from flowing directly out of the second water outlet pipe 304 after exiting the third water inlet pipe 303. In use, by providing a cooling groove 302 inside the water-cooling jacket 3 and fixing a partition inside the cooling groove 302, the cooling water enters the cooling groove 302 from the third water inlet pipe 303, flows along the cooling groove 302, and finally flows out from the second water outlet pipe 304, thus achieving a cooling effect.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An electron beam melting furnace observation window structure, comprising a ring-shaped base (301), an inner wall of the ring-shaped base (301) is fixedly provided with a water cooling jacket (3), and a rotating baffle (7) is rotatably arranged in the ring-shaped base (301), characterized in that, Also includes: Remove the top plate (1) connected to the top of the water cooling jacket (3). The top plate (1) is fixedly provided with a first mounting cylinder (101), and the top plate (1) is fixedly provided with a first cooling cover (2). A first cooling channel is formed between the inner wall of the first cooling cover (2) and the top of the top plate (1). A transparent observation plate is provided at one end of the first mounting cylinder (101) extending out of the first cooling cover (2). The first cooling cover (2) is fixedly provided with a water inlet assembly at one end and a first water outlet pipe (203) is fixedly provided at the other end. The water inlet assembly and the first water outlet pipe (203) are both connected to the first cooling channel.

2. An electron beam melting furnace viewing window structure according to claim 1, characterized in that The water inlet assembly includes a first water inlet pipe (201) and a second water inlet pipe (202). The first water inlet pipe (201) and the second water inlet pipe (202) are respectively fixedly installed on the side wall and top of one end of the first cooling cover (2), and both the first water inlet pipe (201) and the second water inlet pipe (202) are connected to the first cooling channel.

3. The electron beam melting furnace viewing window structure according to claim 1, characterized in that The bottom of the water cooling jacket (3) is provided with a base plate (4), and the base plate (4) has a through hole coaxial with the first mounting cylinder (101), and the inner diameter of the through hole is larger than the inner diameter of the first mounting cylinder (101).

4. An electron beam melting furnace viewing window structure according to claim 3, characterized in that The bottom of the base plate (4) is fixedly provided with a second cooling cover (5) in an arc shape. A second cooling channel is formed between the inner wall of the second cooling cover (5) and the bottom of the base plate (4). A fourth water inlet pipe (501) and a third water outlet pipe (502) are fixedly provided on the second cooling cover (5).

5. The electron beam melting furnace viewing window structure according to claim 1, wherein The water cooling jacket (3) has an arc-shaped cooling groove (302) inside. The outer wall of the annular base (301) is fixedly provided with a third water inlet pipe (303) and a second water outlet pipe (304). The third water inlet pipe (303) and the second water outlet pipe (304) are both connected to the cooling groove (302). A partition is fixedly provided inside the cooling groove (302). The third water inlet pipe (303) and the second water outlet pipe (304) are located on both sides of the partition.

6. The electron beam melting furnace viewing window structure of claim 1, wherein A second mounting cylinder (102) is fixedly installed on the top plate (1). A mounting plate (601) is fixedly installed inside the second mounting cylinder (102) by a second bolt. A motor (6) for driving the rotating baffle (7) is fixedly installed on the mounting plate (601).

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