A silicon carbide heat exchanger with independent tube side and shell side seals

Abstract

The utility model relates to heat exchanger technical field discloses a kind of silicon carbide heat exchangers with independent sealing of tube side shell side, including base, the middle part of the upper surface of base is provided with middle shell mechanism, the middle shell mechanism includes bottom shell, the front end and rear end of bottom shell outer wall are fixedly connected with mounting disc, the front end and rear end of bottom shell inner wall are fixedly connected with locating disc, the outer wall of locating disc front end is equipped with multiple locating thread grooves, the inner wall of locating thread groove is threadedly cooperated with sealing screw pipe, the rear end of sealing screw pipe outer wall is fixedly connected with first sealing clamping block, in the utility model, the silicon carbide heat exchanger is respectively provided with middle shell mechanism and end shell mechanism, and the independent sealing of middle shell side is completed under the cooperation connection of bottom shell and top shell, and the independent sealing of tube side is completed under the independent connection sealing of two outer shells and multiple delivery pipes, to improve the consistency of assembly, reduce the difficulty of alignment and sealing misplacement risk caused by overall butt joint.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a silicon carbide heat exchanger with independent sealing of the tube side and shell side. Background Technology

[0002] Silicon carbide heat exchangers play a crucial role in high-temperature and corrosion-resistant environments and are widely used in heat recovery and temperature control in semiconductor manufacturing, chemical and metallurgical industries, including heat exchange of high-temperature steam, hot oil and corrosive media, and recovery of process waste heat. Their superior thermal stability, corrosion resistance and high purity make them suitable for long-term stable operation under extreme conditions.

[0003] However, traditional silicon carbide heat exchangers typically lack modularity, sealing, and rapid independent maintenance capabilities for the tube / shell side. This results in long maintenance cycles, high downtime, significant spare parts inventory pressure, complex on-site installation with high alignment requirements, high transportation and handling costs, poor fault location and expandability, and overall poor reliability and maintainability.

[0004] Therefore, those skilled in the art have provided a silicon carbide heat exchanger with independent sealing of the tube side and shell side to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a silicon carbide heat exchanger with independent sealing of the tube side and shell side. This silicon carbide heat exchanger consists of a bottom shell, a top shell, two outer shells, and multiple delivery pipes, which are installed and fixed together by sealing blocks and bolts. The modular structure allows the user to quickly complete the repair by replacing the damaged component, shortening the maintenance cycle, reducing downtime, and reducing the difficulty and trouble of on-site maintenance. It also improves the convenience of transporting and moving the device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A silicon carbide heat exchanger with independent tube-side and shell-side sealing includes a base. A central shell mechanism is provided in the middle of the upper surface of the base. The central shell mechanism includes a bottom shell. The front and rear ends of the outer wall of the bottom shell are fixedly connected to mounting plates. The front and rear ends of the inner wall of the bottom shell are fixedly connected to positioning plates. The outer wall of the front end of the positioning plate has multiple positioning threaded grooves. The inner wall of the positioning threaded groove is threaded with a sealing helical tube. The rear end of the outer wall of the sealing helical tube is fixedly connected to a first sealing block. Lower mounting strips are fixedly connected to both sides of the outer wall of the bottom shell. Multiple lower guide plates are fixedly connected to the middle of the inner wall of the bottom shell. Multiple conveying pipes are arranged inside the bottom shell. A second sealing block is fixedly connected to the rear end of the outer wall of the conveying pipe. A threaded pipe is fixedly connected to the outer wall of the front end of the conveying pipe. A locking hexagonal block is threadedly fitted to the outer wall of the threaded pipe. A sealing gasket is fixedly connected to the outer wall of the rear end of the locking hexagonal block. A top shell is snapped onto the upper surface of the bottom shell. Upper mounting strips are fixedly connected to both sides of the outer wall of the top shell. An upper guide plate is fixedly connected to the middle of the inner wall of the top shell. Multiple positioning through grooves are opened on the outer wall of the front end of both the upper guide plate and the lower guide plate. The middle shell mechanism has end shell mechanisms at both the front and rear ends. The end shell mechanism includes a sealing positioning block, a first shell and a second shell. The outer walls of the first shell and the second shell are fixedly connected to mounting flanges. The outer walls of the first shell and the second shell on the side closest to each other are provided with sealing positioning grooves.

[0007] Through the above technical solution, the silicon carbide heat exchanger is equipped with a middle shell mechanism and an end shell mechanism. The middle shell side is independently sealed by the cooperation connection of the bottom shell and the top shell, and the tube side is independently sealed by the separate connection and sealing of the two outer shells and multiple delivery pipes. This improves the consistency of assembly and reduces the alignment difficulty and sealing misalignment risk caused by overall docking.

[0008] Furthermore, the bottom shell is fixedly connected to the middle of the upper surface of the base, a heat flow pipe is fixedly connected to the rear of the lower end of the outer wall of the bottom shell, and a heat flow inlet pipe is fixedly connected to the front end of the upper part of the outer wall of the top shell. The above technical solution enables hot liquid to enter through the hot inlet pipe and then exit through the hot outlet pipe.

[0009] Furthermore, an arc-shaped sealing groove is provided at the upper end of the outer wall of the positioning disk, a strip-shaped sealing groove is fixedly connected to one side of the upper surface of the lower mounting strip, and a sealing strip is fixedly connected to the lower surface of the top shell. The above technical solution enables the top shell to be installed and sealed onto the bottom shell via a sealing strip.

[0010] Furthermore, a hexagonal slot is provided on the outer wall of the rear end of the first sealing block, and a hexagonal block is fixedly connected to the outer wall of the front end of the second sealing block; The above technical solution enables users to disassemble and install the first sealing block using a socket wrench, and also enables the second sealing block to engage with the first sealing block via a hexagonal locking block.

[0011] Furthermore, the conveying pipe is engaged with the upper guide plate and the lower guide plate respectively through the positioning through groove, and the conveying pipe is engaged with the sealing screw pipe. The above technical solution enables the delivery pipe to transfer liquid between the first and second outer shells.

[0012] Furthermore, the sealing positioning block is fixedly connected to the outer wall of the positioning disk, and the sealing positioning block is engaged with the sealing positioning groove. The above technical solution enables the first and second outer shells to be installed on the bottom shell in a relatively tight and sealed manner.

[0013] Furthermore, the first outer shell is fixedly connected to the rear end of the bottom shell, and the second outer shell is fixedly connected to the front end of the bottom shell; The above technical solution enables the first and second outer shells to be respectively installed and fixed on the middle shell mechanism.

[0014] Furthermore, a first partition is fixedly connected to the middle of the inner wall of the first outer shell, a coolant inlet pipe is fixedly connected to the upper end of the outer wall of the second outer shell, a coolant outlet pipe is fixedly connected to the lower end of the outer wall of the second outer shell, and a second partition is fixedly connected to the middle of the outer wall of the second outer shell. Through the above technical solution, the external low-temperature cold liquid can enter the second outer shell through the cold liquid inlet pipe, flow to the first outer shell under the transmission of the upper conveying pipe, and be discharged sequentially from the lower conveying pipe, the second outer shell and the cold liquid outlet pipe under the circulation in the first outer shell.

[0015] This utility model has the following beneficial effects: 1. The present invention proposes a silicon carbide heat exchanger with independent sealing of the tube side and shell side. Compared with most traditional silicon carbide heat exchangers, this silicon carbide heat exchanger is composed of a bottom shell, a top shell, two outer shells and multiple delivery pipes. They are installed and fixed together by sealing blocks and bolts. The modular structure allows the user to quickly complete the repair by replacing the corresponding component when one of the components is damaged, shortening the maintenance cycle, reducing downtime, reducing the difficulty and trouble of on-site maintenance, and improving the convenience of transporting and moving the device.

[0016] 2. The present invention proposes a silicon carbide heat exchanger with independent sealing of the tube side and shell side. Compared with most traditional silicon carbide heat exchangers, this silicon carbide heat exchanger is equipped with a middle shell mechanism and an end shell mechanism. The independent sealing of the middle shell side is achieved by the cooperation connection of the bottom shell and the top shell, and the independent sealing of the tube side is achieved by the separate connection and sealing of the two outer shells and multiple delivery pipes. This improves the consistency of assembly and reduces the alignment difficulty and sealing misalignment risk caused by overall docking. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a silicon carbide heat exchanger with independent sealing of the tube side and shell side proposed in this utility model. Figure 2 This is a schematic diagram of the base structure of a silicon carbide heat exchanger with independent sealing of the tube side and shell side proposed in this utility model. Figure 3 An exploded view of the end shell mechanism of a silicon carbide heat exchanger with independent tube-side and shell-side sealing proposed in this utility model. Figure 4 This is a schematic diagram of the end shell mechanism of a silicon carbide heat exchanger with independent sealing of the tube side and shell side proposed in this utility model. Figure 5 An exploded view of the middle shell mechanism of a silicon carbide heat exchanger with independent sealing of the tube side and shell side proposed in this utility model. Figure 6 This is a schematic diagram of the bottom shell structure of a silicon carbide heat exchanger with independent sealing of the tube side and shell side proposed in this utility model. Figure 7 This is a schematic diagram of the delivery pipe structure of a silicon carbide heat exchanger with independent sealing of the tube side and shell side proposed in this utility model. Figure 8 This is a schematic diagram of the top shell structure of a silicon carbide heat exchanger with independent sealing of the tube side and shell side proposed in this utility model.

[0018] Legend: 1. Base; 2. Middle shell mechanism; 201. Bottom shell; 202. Hot flow manifold; 203. Mounting plate; 204. Positioning plate; 205. Arc-shaped sealing groove; 206. Positioning threaded groove; 207. Sealing threaded tube; 208. First sealing block; 209. Hexagonal slot; 2010. Lower mounting strip; 2011. Strip-shaped sealing groove; 2012. Lower guide plate; 2013. Conveying pipe; 2014. Second sealing block; 2015. Hexagonal block; 2016. Threaded pipe; 2017. Locking hexagonal block; 2018. Sealing gasket; 2019. Top shell; 2020. Upper mounting strip; 2021. Sealing strip; 2022. Upper guide plate; 2023. Positioning through groove; 2024. Hot flow inlet pipe; 3. End shell mechanism; 301. Sealing positioning block; 302. First outer shell; 303. First partition plate; 304. Second outer shell; 305. Coolant inlet pipe; 306. Coolant outlet pipe; 307. Second partition plate; 308. Mounting flange; 309. Sealing positioning groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] One embodiment of this utility model is provided: Reference Figure 1 , 3 5. A silicon carbide heat exchanger with independent sealing of tube side and shell side, including a base 1, a middle shell mechanism 2 is provided in the middle of the upper surface of the base 1, the middle shell mechanism 2 includes a bottom shell 201, the front end and the rear end of the outer wall of the bottom shell 201 are fixedly connected to the mounting plate 203, the front end and the rear end of the inner wall of the bottom shell 201 are fixedly connected to the positioning plate 204, the outer wall of the front end of the positioning plate 204 is provided with a plurality of positioning threaded grooves 206, the inner wall of the positioning threaded groove 206 is threaded with a sealing screw tube 207, the rear end of the outer wall of the sealing screw tube 207 is fixedly connected to a first sealing block 208, and the two sides of the outer wall of the bottom shell 201 are fixedly connected to the lower mounting strip 2010. Multiple lower guide plates 2012 are fixedly connected to the middle of the inner wall of the bottom shell 201. Multiple conveying pipes 2013 are provided inside the bottom shell 201. A second sealing block 2014 is fixedly connected to the rear end of the outer wall of the conveying pipe 2013. A threaded pipe 2016 is fixedly connected to the outer wall of the front end of the conveying pipe 2013. A locking hexagonal block 2017 is threadedly fitted to the outer wall of the threaded pipe 2016. A sealing gasket 2018 is fixedly connected to the outer wall of the rear end of the locking hexagonal block 2017. A top shell 2019 is snapped onto the upper surface of the bottom shell 201. Upper mounting strips 2020 are fixedly connected to both sides of the outer wall of the top shell 2019. An upper guide plate 2022 is fixedly connected to the middle of the inner wall of the top shell 2019. Multiple positioning slots 2023 are opened on the outer walls of the front ends of the upper guide plate 2022 and the lower guide plate 2012. The middle shell mechanism 2 has end shell mechanisms 3 at both its front and rear ends. The end shell mechanism 3 includes a sealing positioning block 301, a first outer shell 302, and a second outer shell 304. The outer walls of the first outer shell 302 and the second outer shell 304 are fixedly connected to mounting flanges 308. The outer walls of the first outer shell 302 and the second outer shell 304 on the side closest to each other are provided with sealing positioning grooves 309. The silicon carbide heat exchanger is provided with a middle shell mechanism 2 and an end shell mechanism 3 respectively. The middle shell side is independently sealed by the cooperation connection of the bottom shell 201 and the top shell 2019. The tube side is independently sealed by the individual connection and sealing of the two outer shells and multiple conveying pipes 2013. This improves the consistency of assembly and reduces the alignment difficulty and sealing misalignment risk caused by the overall docking.

[0021] Reference Figure 5 , 6 8. The bottom shell 201 is fixedly connected to the middle of the upper surface of the base 1. A heat flow pipe 202 is fixedly connected to the rear of the lower end of the outer wall of the bottom shell 201. A heat flow inlet pipe 2024 is fixedly connected to the front end of the upper part of the outer wall of the top shell 2019, so that the hot liquid can enter through the heat flow inlet pipe 2024 and then exit from the heat flow pipe 202. An arc-shaped sealing groove 205 is opened at the upper end of the outer wall of the positioning plate 204. A strip-shaped sealing groove 2011 is fixedly connected to one side of the upper surface of the lower mounting strip 2010. A sealing strip 2021 is fixedly connected to the lower surface of the top shell 2019, so that the top shell 2019 can be installed and sealed on the bottom shell 201 through the sealing strip 2021.

[0022] Reference Figure 5 , 7 The outer wall of the rear end of the first sealing block 208 is provided with a hexagonal slot 209, and the outer wall of the front end of the second sealing block 2014 is fixedly connected with a hexagonal block 2015, so that the user can disassemble and install the first sealing block 208 with a socket wrench, and the second sealing block 2014 can be engaged with the first sealing block 208 through the hexagonal block 2015. The conveying pipe 2013 is engaged with the upper guide plate 2022 and the lower guide plate 2012 respectively through the positioning through slot 2023, and the conveying pipe 2013 is engaged with the sealing screw pipe 207.

[0023] Reference Figure 2 , 3 4. This allows the conveying pipe 2013 to transfer the liquid between the first outer shell 302 and the second outer shell 304. The sealing positioning block 301 is fixedly connected to the outer wall of the positioning disk 204. The sealing positioning block 301 is engaged with the sealing positioning groove 309, so that the first outer shell 302 and the second outer shell 304 can be installed on the bottom shell 201 in a relatively tight and sealed manner. The first outer shell 302 is fixedly connected to the rear end of the bottom shell 201, and the second outer shell 304 is fixedly connected to the front end of the bottom shell 201, so that the first outer shell 302 and the second outer shell 304 can be respectively installed and fixed on the middle shell mechanism 2.

[0024] Reference Figure 2 , 34. A first partition 303 is fixedly connected to the middle of the inner wall of the first outer shell 302. A cold liquid inlet pipe 305 is fixedly connected to the upper end of the outer wall of the second outer shell 304. A cold liquid outlet pipe 306 is fixedly connected to the lower end of the outer wall of the second outer shell 304. A second partition 307 is fixedly connected to the middle of the outer wall of the second outer shell 304. This allows the cold liquid from the outside to enter the second outer shell 304 through the cold liquid inlet pipe 305. Under the transmission of the upper conveying pipe 2013, it flows to the first outer shell 302. Under the circulation in the first outer shell 302, it is discharged sequentially from the lower conveying pipe 2013, the second outer shell 304 and the cold liquid outlet pipe 306.

[0025] Working principle: First, the first outer shell 302 and the second outer shell 304 are disassembled to maintain the connectors of the conveying pipe 2013, or to clean and maintain the first outer shell 302 and the second outer shell 304. Then, the conveying pipe 2013 can be disassembled and cleaned by rotating the locking hexagonal block 2017, thereby enabling the disassembly, inspection and maintenance of the sealing screw pipe 207 and the first sealing block 208, reducing the possibility of damage to the seals and failure to function properly. Finally, the top shell 2019 can be disassembled to clean and maintain the internal snap-fit ​​of the middle shell mechanism 2. The separate structure allows the user to replace the damaged parts accordingly. All threaded connection parts can be disassembled and installed using a hexagonal wrench or socket. Hot liquid flows in the middle shell mechanism 2, and cold liquid flows in the end shell mechanism 3 to complete the heat exchange operation.

Claims

1. A silicon carbide heat exchanger with independent tube-side and shell-side sealing, comprising a base, characterized in that: A central shell mechanism is provided in the middle of the upper surface of the base. The central shell mechanism includes a bottom shell. The front and rear ends of the outer wall of the bottom shell are fixedly connected to mounting plates. The front and rear ends of the inner wall of the bottom shell are fixedly connected to positioning plates. The outer wall of the front end of the positioning plate is provided with multiple positioning threaded grooves. The inner wall of the positioning threaded groove is threaded with a sealing screw tube. The rear end of the outer wall of the sealing screw tube is fixedly connected to a first sealing block. The lower mounting strips are fixedly connected to both sides of the outer wall of the bottom shell. Multiple lower guide plates are fixedly connected to the middle of the inner wall of the bottom shell. Multiple conveying pipes are arranged inside the bottom shell. A second sealing block is fixedly connected to the rear end of the outer wall of the conveying pipe. A threaded pipe is fixedly connected to the outer wall of the front end of the conveying pipe. A locking hexagonal block is threadedly fitted to the outer wall of the threaded pipe. A sealing gasket is fixedly connected to the outer wall of the rear end of the locking hexagonal block. A top shell is snapped onto the upper surface of the bottom shell. Upper mounting strips are fixedly connected to both sides of the outer wall of the top shell. An upper guide plate is fixedly connected to the middle of the inner wall of the top shell. Multiple positioning through grooves are opened on the outer wall of the front end of both the upper guide plate and the lower guide plate. The middle shell mechanism has end shell mechanisms at both the front and rear ends. The end shell mechanism includes a sealing positioning block, a first shell and a second shell. The outer walls of the first shell and the second shell are fixedly connected to mounting flanges. The outer walls of the first shell and the second shell on the side closest to each other are provided with sealing positioning grooves.

2. A silicon carbide heat exchanger with independent tube-side and shell-side sealing according to claim 1, characterized in that: The bottom shell is fixedly connected to the middle of the upper surface of the base. A heat flow pipe is fixedly connected to the rear of the lower end of the outer wall of the bottom shell, and a heat flow inlet pipe is fixedly connected to the front end of the upper part of the outer wall of the top shell.

3. A silicon carbide heat exchanger with independent tube-side and shell-side sealing according to claim 1, characterized in that: An arc-shaped sealing groove is provided at the upper end of the outer wall of the positioning disk, a strip-shaped sealing groove is fixedly connected to one side of the upper surface of the lower mounting strip, and a sealing strip is fixedly connected to the lower surface of the top shell.

4. A silicon carbide heat exchanger with independent tube-side and shell-side sealing according to claim 1, characterized in that: The outer wall of the rear end of the first sealing block is provided with a hexagonal slot, and the outer wall of the front end of the second sealing block is fixedly connected with a hexagonal block.

5. A silicon carbide heat exchanger with independent tube-side and shell-side sealing according to claim 1, characterized in that: The conveying pipe is engaged with the upper guide plate and the lower guide plate respectively through the positioning through groove, and the conveying pipe is engaged with the sealing screw pipe.

6. A silicon carbide heat exchanger with independent tube-side and shell-side sealing according to claim 1, characterized in that: The sealing positioning block is fixedly connected to the outer wall of the positioning disk, and the sealing positioning block is engaged with the sealing positioning groove.

7. A silicon carbide heat exchanger with independent tube-side and shell-side sealing according to claim 1, characterized in that: The first outer shell is fixedly connected to the rear end of the bottom shell, and the second outer shell is fixedly connected to the front end of the bottom shell.

8. A silicon carbide heat exchanger with independent tube-side and shell-side sealing according to claim 1, characterized in that: A first partition is fixedly connected to the middle of the inner wall of the first outer shell, a coolant inlet pipe is fixedly connected to the upper end of the outer wall of the second outer shell, a coolant outlet pipe is fixedly connected to the lower end of the outer wall of the second outer shell, and a second partition is fixedly connected to the middle of the outer wall of the second outer shell.

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