Directional solidification water-cooled crystallizer

Abstract

The utility model belongs to water -cooled crystallizer technical field especially for a kind of water -cooled crystallizer of directional solidification, including the water -cooled crystallizer assembly of water -cooled crystallizer shell, bottom shell and bottom plate, the support assembly for being used to support mould shell is equipped in the water -cooled crystallizer assembly, the upper fixed ring and the lower fixed ring are all installed with several equidistant distribution's U type pipe, the fixed pipe is installed on the U type pipe, the upper connecting ring and the lower connecting ring are installed between the fixed pipe, the fixed pipe outer wall slidingly connected with slide sleeve;The device can be detachably connected design to connecting pipe by U type pipe, fixed pipe, slide sleeve and spring, the quick replacement of connecting pipe is realized, when single connecting pipe is damaged due to wear, coating peeling, without disassembling the whole cooling system, only need to push slide sleeve to overcome the elastic support force of spring, damaged connecting pipe can be taken out between fixed pipe, maintenance time is shortened, while avoiding overall replacement cooling component.

Description

Technical Field

[0001] This utility model belongs to the technical field of water-cooled crystallizers, specifically relating to a water-cooled crystallizer for directional solidification. Background Technology

[0002] Directional solidification water-cooled crystallizers are core equipment for the preparation of high-performance materials such as high-temperature alloys and single-crystal ceramics in the fields of aerospace and energy equipment. The stability and ease of maintenance of their cooling systems directly affect the quality of castings and production efficiency. Traditional crystallizer cooling systems mostly adopt integral welding or one-piece molding structures, with the main cooling pipe, connecting pipe sections and sealing components forming an inseparable integrated unit (such as the cooling pipes and the supporting shell being fixed by welding, with no independent separation mechanism between pipe sections). Because the cooling pipes are in contact with high-temperature liquid metal coolant for a long time, the outer wall of the pipe section is prone to wear, coating peeling and even wall thickness reduction due to liquid metal corrosion, thermal cycle stress and flow scouring. When a single pipe section is damaged, it will directly affect safe production. At the same time, because it is inside the crystallizer, it is difficult to conduct detailed inspection, resulting in high maintenance efficiency and maintenance costs. Utility Model Content

[0003] To address the above problems, the purpose of this invention is to provide a water-cooled crystallizer for directional solidification, thereby solving the aforementioned issues.

[0004] To achieve the above objectives, a water-cooled crystallizer for directional solidification includes a water-cooled crystallizer assembly composed of a water-cooled crystallizer shell, a bottom shell, and a bottom plate. The water-cooled crystallizer assembly contains a support component for supporting the mold shell. The water-cooled crystallizer assembly also contains an upper fixing ring and a lower fixing ring. The lower fixing ring is threaded between the bottom plate and the water-cooled crystallizer shell. Several equidistantly distributed U-shaped tubes are installed on both the upper and lower fixing rings. Fixing tubes are installed on the U-shaped tubes. An upper connecting ring and a lower connecting ring are installed between the fixing tubes. A sliding sleeve is slidably connected to the outer wall of each fixing tube. A spring is sleeved on the outer wall of each fixing tube to support one end of the sliding sleeve. The sliding sleeves are connected by connecting tubes.

[0005] Preferably, the base plate is located at the center of the water-cooled crystallizer shell and the bottom shell, and the base plate and the bottom shell are connected by a support rod.

[0006] Preferably, the support assembly includes a support ring, a support ring, and a support plate. The support plate and the support ring are connected by a connecting rod, and the support ring is detachably connected to the top of the water-cooled crystallizer shell.

[0007] Preferably, a horizontal plate is installed on the outer wall of the support ring, and a drive telescopic rod is installed on the support ring, with the top end of the drive telescopic rod connected to the horizontal plate.

[0008] Preferably, several of the U-shaped tubes are connected in series via the fixed tube and the connecting tube, and one end of the sliding sleeve matches one end of the connecting tube.

[0009] Preferably, the upper fixing ring and the upper connecting ring are connected by a sealing annular plate, the lower fixing ring and the lower connecting ring are connected by a sealing annular plate, and the upper fixing ring and the lower fixing ring are connected by two symmetrical vertical plates.

[0010] This utility model has the following beneficial effects:

[0011] This device features a detachable connection design for the connecting pipes via a U-shaped tube, a fixed tube, a sliding sleeve, and a spring, enabling quick replacement of the connecting pipes. When a single connecting pipe is damaged due to wear or coating peeling, the entire cooling system does not need to be disassembled. Simply push the sliding sleeve to overcome the elastic support force of the spring, and the damaged connecting pipe can be removed from between the fixed tubes, shortening maintenance time. At the same time, it avoids replacing the entire cooling component, reducing the annual maintenance cost per unit. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0014] Figure 3 This is a schematic diagram showing the disassembled structure of the connecting pipe in this utility model;

[0015] Figure 4 This utility model Figure 2 An enlarged diagram of A in the diagram.

[0016] In the diagram: 1. Water-cooled crystallizer assembly; 11. Water-cooled crystallizer shell; 12. Bottom shell; 13. Base plate; 131. Support rod; 2. Support assembly; 21. Support ring; 22. Support ring; 221. Horizontal plate; 23. Support plate; 24. Drive telescopic rod; 25. Connecting rod; 3. Upper fixing ring; 31. Lower fixing ring; 311. Upper connecting ring; 312. Lower connecting ring; 32. U-shaped tube; 33. Fixing tube; 34. Sliding sleeve; 35. Connecting tube; 36. Spring; 37. Vertical plate. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0018] Example 1:

[0019] like Figure 1 As shown in Figure 4, this utility model provides the following technical solution: a water-cooled crystallizer assembly 1 consisting of a water-cooled crystallizer shell 11, a bottom shell 12, and a bottom plate 13. The water-cooled crystallizer assembly 1 is provided with a support assembly 2 for supporting the mold shell. The water-cooled crystallizer assembly 1 is provided with an upper fixing ring 3 and a lower fixing ring 31. The lower fixing ring 31 is threaded between the bottom plate 13 and the water-cooled crystallizer shell 11. Several U-shaped tubes 32 are installed on the upper fixing ring 3 and the lower fixing ring 31. Fixing tubes 33 are installed on the U-shaped tubes 32. An upper connecting ring 311 and a lower connecting ring 312 are installed between the fixing tubes 33. A sliding sleeve 34 is slidably connected to the outer wall of the fixing tube 33. A spring 36 for supporting one end of the sliding sleeve 34 is sleeved on the outer wall of the fixing tube 33. The sliding sleeves 34 are connected by a connecting tube 35.

[0020] In this implementation scheme: the water-cooled crystallizer assembly 1 serves as the carrier of the supporting device. During use, it is mounted on the water-cooled crystallizer assembly 1 via a support assembly 2. The support ring 21 in the support assembly 2 supports the top of the water-cooled crystallizer assembly 1, the support ring 22 is positioned above the water-cooled crystallizer assembly 1, and the support plate 23 is positioned below the support ring 22. The height of the support ring 22 and the support plate 23 is adjusted synchronously to allow molten metal solution to be injected into the module for molding. Based on the mold shell size, the molten metal solution is safely placed in the liquid metal coolant within the water-cooled crystallizer assembly 1. The molten metal solution undergoes water-cooling crystallization through heat transfer, while the liquid metal coolant is cooled by water supplied through the upper and lower fixing rings 31. At the bottom and top positions of the cold crystallizer assembly 1, the lower fixing ring 31 is supported by the bottom and base plate 13 of the water-cooled crystallizer assembly 1, allowing the lower fixing ring 31 to be sealed and supported at the bottom position of the water-cooled crystallizer assembly 1. This allows the liquid metal coolant to be stored inside the water-cooled crystallizer assembly 1 to cool the molten metal solution. The U-shaped tubes 32 installed on the upper fixing ring 3 and the lower fixing ring 31 are respectively located at the top and bottom positions of the water-cooled crystallizer assembly 1, offset from the liquid metal coolant. The fixing tubes 33 installed on the U-shaped tubes 32 can install the sliding sleeve 34. The sliding sleeve 34 slides up and down on the outer wall of the fixing tube 33, so that when the connecting tube 35 is between the upper and lower fixing tubes 33, the connecting tube 35 can be connected to both ends of the fixing tube 33. The sliding sleeve 34 slides to fit at the connection between the fixed pipe 33 and the connecting pipe 35, maintaining a sealed connection. This allows the U-shaped pipe 32, the fixed pipe 33, and the sliding sleeve 34 to be interconnected, forming a series transmission pipeline for the water coolant. The sliding sleeve 34, made of materials such as copper, ensures efficient heat transfer, allowing the heat absorbed by the liquid metal to be cooled by water cooling through the U-shaped pipe 32, the fixed pipe 33, and the sliding sleeve 34. However, under prolonged use, the stress induced by the temperature cycle of the liquid metal coolant and the superposition of phase transformation stress cause wear on the outer wall of the connecting pipe 35. If one of the connecting pipes 35 wears and breaks, cooling water leaks into the water-cooled crystallizer assembly 1, affecting the liquid metal. Within the coolant, cooling water can enter the high-temperature liquid metal pool, instantly vaporizing and expanding in volume by more than 1000 times, potentially causing liquid metal splashing or explosion, which is detrimental to safe production. The device can be separated from the bottom of the water-cooled crystallizer assembly 1 via the lower fixing ring 31, and from the top of the support assembly 2 via the water-cooled crystallizer assembly 1. This allows components such as the upper fixing ring 3, lower fixing ring 31, and U-shaped tube 32 to be removed upwards. The sliding sleeve 34 is supported at the connection between the fixed tube 33 and the connecting tube 35. The upper connecting ring 311 and lower connecting ring 312 are installed between the upper and lower U-shaped tubes 32, respectively. A spring 36 supports one end of the U-shaped tube 32, allowing the sliding sleeve 34 to be supported and fitted between the fixed tube 33 and the connecting tube 35. During the inspection of the outer protective coating of each sliding sleeve 34...When wear is found in the coating of one or more connecting pipes 35, the sliding sleeve 34 can push against the elastic support of the spring 36, allowing the connecting pipe 35 to be quickly removed from between the fixed pipes 33. This facilitates timely maintenance or replacement of the connecting pipe 35. The device allows for easy separation of the connecting pipe 35 from the water-cooled crystallizer assembly 1 for comprehensive safety inspection, while avoiding the need for complete replacement. This ensures that the liquid metal coolant can safely crystallize the metal solution.

[0021] The base plate 13 is located at the center of the water-cooled crystallizer outer shell 11 and the bottom shell 12. The base plate 13 and the bottom shell 12 are connected by a support rod 131. The base plate 13 is located at the center of the water-cooled crystallizer outer shell 11 and the bottom shell 12, so that the lower fixing ring 31 can mate with the outer wall of the base plate 13 and the inner wall of the bottom of the water-cooled crystallizer assembly 1, so that the lower fixing ring 31 can be connected and sealed during installation. The base plate 13 and the bottom shell 12 are connected by a support rod 131, so that the support rod 131 can stably fix the position of the base plate 13. At the same time, the support rod 131 makes way for the U-shaped tube 32 on the lower fixing ring 31, so that the upper fixing ring 3 and the lower fixing ring 31 can be separated.

[0022] The support assembly 2 includes a support ring 21, a support ring 22, and a support plate 23. The support plate 23 and the support ring 22 are connected by a connecting rod 25. The support ring 21 is detachably connected to the top of the water-cooled crystallizer shell 11. The detachable connection between the support ring 21 and the top of the water-cooled crystallizer assembly 1 makes it easy to separate the support assembly 2 as a whole to allow for the separation of the upper fixing ring 3 and the lower fixing ring 31. The support plate 23 and the drive telescopic rod 24 are connected vertically by a connecting rod 25, enabling synchronous vertical height adjustment.

[0023] A horizontal plate 221 is installed on the outer wall of the support ring 22, and a drive telescopic rod 24 is installed on the support ring 21. The top end of the drive telescopic rod 24 is connected to the horizontal plate 221. The horizontal plate 221 is connected to the drive telescopic rod 24 installed on the support ring 21, so that when the drive telescopic rod 24 can extend or retract, the drive telescopic rod 24 can support the height of the horizontal plate 221, and the height of the support ring 22 and the support plate 23 can be adjusted.

[0024] Several U-shaped tubes 32 are connected in series via fixed tubes 33 and connecting tubes 35. One end of the sliding sleeve 34 matches one end of the connecting tube 35. The U-shaped tubes 32, fixed tubes 33 and sliding sleeves 34 are connected in series to allow cooling water to be transmitted within the U-shaped tubes 32, fixed tubes 33 and connecting tubes 35. This allows the cooling water to circulate within the water-cooled crystallizer assembly 1 to cool the liquid metal coolant. The connecting tubes 35 and sliding sleeves 34 are tightly connected to each other, allowing the cooling water to be transmitted in a sealed manner within the U-shaped tubes 32, fixed tubes 33 and connecting tubes 35.

[0025] The upper fixing ring 3 and the upper connecting ring 311 are connected by a sealing annular plate, and the lower fixing ring 31 and the lower connecting ring 312 are connected by a sealing annular plate. The upper fixing ring 3 and the lower fixing ring 31 are connected by two symmetrical vertical plates 37. The upper fixing ring 3 and the upper connecting ring 311, as well as the lower fixing ring 31 and the lower connecting ring 312, are connected by sealing annular plates to prevent the liquid metal coolant from contacting the fixed pipe 33 and the U-shaped pipe 32. This allows the device to perform safety monitoring on the connecting pipe 35. The vertical plates 37 are used to connect the upper fixing ring 3 and the lower fixing ring 31 vertically, so that the upper fixing ring 3 and the lower fixing ring 31 can be removed synchronously.

[0026] The working principle of this technical solution is as follows: The device is connected to the upper fixed ring 3 and the lower fixed ring 31 through the water-cooled crystallizer assembly 1 to form a cavity for storing liquid metal coolant. The fixed pipe 33 and the U-shaped pipe 32 are blocked from contacting the liquid metal coolant, while the connecting pipe 35 is in contact with the liquid metal coolant. When performing later maintenance and component inspection and replacement, the liquid metal coolant is taken out through the replenishment and discharge channel. Then, the output of cooling water is cut off, and the coolant in the U-shaped pipe 32, the fixed pipe 33 and the connecting pipe 35 is discharged. First, the connection between the support ring 21 and the water-cooled crystallizer shell 11 is disassembled and the support assembly 2 is removed. The upper fixed ring 3 and the lower fixed ring 31 are taken out together. The anti-corrosion coating of the connecting pipe 35 is checked by an ultrasonic thickness gauge to see if it is worn and whether the wall thickness is greater than or equal to the design value. If there is a problem with the connecting pipe 35, the individual pipe section is directly replaced. The sliding sleeve 34 overcomes the elastic support of the spring 36 and the entire section of the connecting pipe 35 is directly removed. After replacement, the sliding sleeve 34 is resealed.

[0027] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of the present invention, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A water-cooled crystallizer for directional solidification, comprising a water-cooled crystallizer assembly (1) consisting of a water-cooled crystallizer shell (11), a bottom shell (12), and a bottom plate (13), characterized in that, The water-cooled crystallizer assembly (1) is provided with a support assembly (2) for supporting the mold shell. The water-cooled crystallizer assembly (1) is provided with an upper fixing ring (3) and a lower fixing ring (31). The lower fixing ring (31) is threaded between the base plate (13) and the water-cooled crystallizer shell (11). Several U-shaped tubes (32) are installed on the upper fixing ring (3) and the lower fixing ring (31). Fixing tubes (33) are installed on the U-shaped tubes (32). An upper connecting ring (311) and a lower connecting ring (312) are installed between the fixing tubes (33). A sliding sleeve (34) is slidably connected to the outer wall of the fixing tube (33). A spring (36) for supporting one end of the sliding sleeve (34) is sleeved on the outer wall of the fixing tube (33). The sliding sleeves (34) are connected by a connecting tube (35).

2. The water-cooled crystallizer for directional solidification according to claim 1, characterized in that: The base plate (13) is located at the center of the outer shell (11) of the water-cooled crystallizer and the bottom shell (12), and the base plate (13) and the bottom shell (12) are connected by a support rod (131).

3. A water-cooled crystallizer for directional solidification according to claim 1, characterized in that: The support assembly (2) includes a support ring (21), a support ring (22) and a support plate (23). The support plate (23) and the support ring (22) are connected by a connecting rod (25). The support ring (21) is detachably connected to the top of the water-cooled crystallizer shell (11).

4. A water-cooled crystallizer for directional solidification according to claim 3, characterized in that: A horizontal plate (221) is installed on the outer wall of the support ring (22), and a drive telescopic rod (24) is installed on the support ring (21). The top end of the drive telescopic rod (24) is connected to the horizontal plate (221).

5. A water-cooled crystallizer for directional solidification according to claim 1, characterized in that: Several U-shaped tubes (32) are connected in series through the fixed tube (33) and the connecting tube (35), and one end of the sliding sleeve (34) matches one end of the connecting tube (35).

6. A water-cooled crystallizer for directional solidification according to claim 1, characterized in that: The upper fixing ring (3) and the upper connecting ring (311) are connected by a sealing ring plate, the lower fixing ring (31) and the lower connecting ring (312) are connected by a sealing ring plate, and the upper fixing ring (3) and the lower fixing ring (31) are connected by two symmetrical upright plates (37).

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