Convenient water cooling structure for protecting knife edge of high-temperature corrosion device

Abstract

The invention relates to the technical field of mechanical structure cooling, in particular to a convenient water cooling structure for protecting a high-temperature corrosion device knife edge. In order to solve the problem that a knife edge and a copper ring are damaged due to high temperature, the invention provides the following technical scheme: the device comprises three sections of clamp units with different diameters, a water cooling assembly, a fixing mechanism and a fluid interface, the three sections of clamp units are hinged through a fixing mechanism to form an annular buckle capable of being opened and closed, and the annular buckle is matched with the surface contours of different diameter sections of the high-temperature corrosion tank body. The three variable-diameter hoops are matched with different-diameter sections of the tank body, three water cooling structures capable of being selectively matched according to needs are matched, precise temperature control and efficient cooling of the connector area are achieved, maintenance is simplified through the hinged quick-release design, safety and stability are guaranteed through the high-heat-conduction material, and the problems of sealing failure and maintenance of the connector of the high-temperature corrosion device are effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical structure cooling, and particularly relates to a convenient water cooling structure for knife edge protection of a high-temperature corrosion device. BACKGROUND

[0002] At present, material is an important problem restricting the development of nuclear fusion energy, and the blanket is an important component for shielding irradiation, tritium self-sustaining and energy conversion of a fusion reactor. The blanket module is generally composed of a first wall material facing the plasma, a structural material, a tritium breeder, a neutron multiplier and a coolant. Because the liquid metal lithium / lithium-lead blanket has good neutron economy, high tritium breeding ability, good heat conduction and heat carrying capacity, and good adaptability to the complex geometry of the tokamak, the liquid metal lithium / lithium-lead blanket has developed into one of the most popular conceptual designs of the blanket of the fusion reactor at home and abroad.

[0003] However, the liquid lithium / lithium-lead alloy has strong alkalinity and is corrosive to most metal materials such as stainless steel, especially under high-temperature and flowing service conditions. The corrosion problem is one of the problems to be solved for the service of structural and functional materials in the liquid lithium / lithium-lead blanket environment of the fusion reactor. It is of great significance for the safe operation of the fusion reactor to carry out research on the corrosion characteristics of high-temperature liquid metal and fusion reactor materials and to find methods to alleviate and inhibit material corrosion. The existing device tank for high-temperature liquid metal corrosion research adopts high-temperature and corrosion-resistant materials such as molybdenum and tungsten, as well as sealing materials such as oxygen-free copper, aluminum, silver and rubber. However, when the temperature at the interface of the tank is too high, the interface structure and the sealing ring are damaged due to the difference in the thermal expansion coefficient between the sealing material and the main body material of the tank, which damages the sealing of the device and poses a safety hazard, and also makes the later maintenance difficult, for example, the entire device needs to be disassembled when replacing the sealing element or internal components, which is time-consuming and labor-intensive. In view of this, the present application provides a convenient water cooling structure for knife edge protection of a high-temperature corrosion device. SUMMARY

[0004] The purpose of the present application is to solve the problem of high temperature of the tank interface of the high-temperature liquid metal corrosion research device in the background art, which causes the interface structure and the sealing ring to be damaged due to the difference in the thermal expansion coefficient between the sealing material and the main body material of the tank, damages the sealing of the device and poses a safety hazard, and requires disassembly of the entire device for later maintenance, which is time-consuming and labor-intensive. A convenient water cooling structure for knife edge protection of a high-temperature corrosion device is provided.

[0005] The technical scheme of the present application is a convenient water cooling structure for knife edge protection of a high-temperature corrosion device, which comprises three sections of clamping units with different diameters, a water cooling assembly, a fixing mechanism and a fluid interface. The three sections of clamping units are hinged through the fixing mechanism to form an openable and closable annular buckle, which is suitable for the surface profile of different diameter sections of the high-temperature corrosion tank.

[0006] The fixing mechanism is used for locking and fixing the clamp unit to the surface of the tank body;

[0007] The water cooling assembly is embedded in the internal cavity of each clamp unit, and the water cooling assembly comprises a full-through water channel structure, a turbulence column enhanced structure and a water cooling pipeline structure;

[0008] The fluid interface is in communication with the water cooling assembly and is used for accessing the cooling fluid to form a circulating cooling.

[0009] Optionally, the clamp unit comprises a first section clamp, a second section clamp and a third section clamp arranged in sequence from top to bottom, each section clamp unit is a half-wall structure, and after being closed, a complete annular structure is formed to wrap the surface of the corresponding diameter section of the tank body.

[0010] The fluid interface comprises a water inlet interface and a water outlet interface, and is in communication with the water cooling assembly and is used for accessing an external cooling water source.

[0011] Optionally, the full-through water channel structure is an annular hollow channel integrally formed in the clamp unit, and the two ends of the channel are in communication with the fluid interface, thereby forming a straight-through circulation path of the cooling fluid.

[0012] Optionally, the turbulence column enhanced structure comprises an annular hollow channel and a plurality of turbulence columns uniformly arranged in the channel.

[0013] The turbulence columns are arranged perpendicularly to the inner wall of the channel and are arranged in an axial and circumferential direction, and are used for destroying the laminar flow state of the cooling fluid to enhance the turbulent heat exchange.

[0014] Optionally, the cross section of the turbulence column is circular, and the distance between adjacent turbulence columns is 1 / 3-1 / 2 of the inner diameter of the channel.

[0015] Optionally, the water cooling pipeline structure is an annular coil pipe embedded in the interior of the clamp unit, and the two ends of the annular coil pipe are sealingly connected with the fluid interface to form a closed cooling loop.

[0016] The annular coil pipe is arranged in close contact with the inner wall of the clamp unit, and is used for strengthening the local heat exchange.

[0017] Optionally, the fixing mechanism comprises a hinged structure and a locking assembly.

[0018] The hinged structure is arranged at the connection of adjacent clamp units to realize the opening and closing operation of the clamp unit.

[0019] The locking assembly is a bolt or buckle structure, and is arranged at the butt joint end of the three-section clamp unit after being closed, and is used for locking and fixing the annular buckle.

[0020] Optionally, the material of the clamp unit is copper alloy, and the material of the water cooling assembly is the same as that of the clamp unit.

[0021] Optionally, the three-section clamp unit is clamped at the interface of different diameter sections of the high-temperature corrosion tank body through a fixing mechanism, a fluid interface is in communication with an external cooling system to form a continuous circulating cooling loop, and the interface of the tank body is protected and cooled.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The present application adopts a three-section semi-wall clamp unit with different diameters, which can be opened and closed through a hinged structure to form a complete annular buckle, accurately fit the surface profile of different diameter sections of the high-temperature corrosion tank body, realize full-wrapping coverage of the interface area, solve the problems of poor adaptability and local cooling omission of traditional cooling structures, and ensure the overall cooling protection effect of the interface.

[0024] 2. Each section of the clamp unit can independently select a full-water channel structure, a turbulence column enhanced structure or a water-cooled pipe structure, and flexibly configure according to the thermal load difference of different parts of the tank body interface: the full-water channel meets the basic cooling demand, the turbulence column enhances the turbulent heat exchange by destroying the laminar state, the distance between adjacent turbulence columns is optimized to 1 / 3-1 / 2 of the inner diameter of the channel, the heat exchange efficiency is improved, and the water-cooled pipe structure is attached to the inner wall to realize local precise cooling. The three modes cooperatively realize individualized adjustment of cooling efficiency, and effectively inhibit the difference in thermal expansion coefficient at the interface caused by high temperature.

[0025] 3. Through the hinged opening and closing structure and the bolt or buckle type locking assembly, the clamp can be quickly opened, closed, disassembled and operated for internal component maintenance, thereby shortening the maintenance time and greatly reducing the labor and time cost.

[0026] 4. The clamp unit and the water-cooled assembly are made of high-thermal-conductivity copper alloy material, which has excellent heat conduction efficiency and can quickly conduct heat away from the interface area to avoid damage to the sealing material due to high temperature aging; the fluid interface is provided with independent water inlet and outlet, and adopts quick-connection type sealing design, which not only simplifies the pipeline connection, but also improves the sealing performance of the cooling loop to prevent cooling fluid leakage, and at the same time avoids the failure of the interface structure due to thermal expansion and contraction, thereby ensuring the long-term safe operation of the device.

[0027] 5. The components in the present application adopt an integrated embedded design without additional redundant structures, have light overall weight and small space occupation, are suitable for the complex geometric layout of the fusion reactor high-temperature liquid metal corrosion research device, are tightly attached to the surface of the tank body in a closed annular structure, reduce heat loss, can resist vibration caused by cooling fluid flow and device operation, have strong structural stability, and are suitable for harsh service environments such as high temperature and high pressure.

[0028] In summary, the application realizes accurate temperature control and efficient cooling of the interface area by adapting the different diameter sections of the tank body with three-section variable-diameter clamps and matching three types of water-cooling structures that can be selected as needed, and the hinged quick-release design simplifies maintenance, and the high-thermal-conductivity material ensures safety and stability, effectively solving the problems of high-temperature corrosion device interface seal failure and maintenance difficulties. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a structural schematic diagram of a convenient water-cooling structure for high-temperature corrosion device knife edge protection;

[0030] Figure 2 is a cross-sectional schematic diagram of a full-through water channel structure;

[0031] Figure 3 is a cross-sectional schematic diagram of a turbulence column enhanced structure;

[0032] Figure 4 is a cross-sectional schematic diagram of a water-cooling pipe structure;

[0033] REFERENCE NUMERALS:

[0034] 1, clamp unit;11, first section clamp;12, second section clamp;13, third section clamp;

[0035] 2, water-cooling assembly;21, full-through water channel structure;22, turbulence column enhanced structure;221, turbulence column;23, water-cooling pipe structure;

[0036] 3, fixing mechanism;31, hinged structure;32, locking assembly;

[0037] 4, fluid interface;41, water inlet interface;42, water outlet interface. DETAILED DESCRIPTION

[0038] The technical solutions of the application will be described in detail below with reference to the drawings, obviously, the described embodiments are part of the embodiments of the application, not all.

[0039] The components of the embodiments of the application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application.

[0040] Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the application.

[0041] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] Embodiment one

[0043] As shown in Figure 1 and Figure 2 , the present application proposes a convenient water cooling structure for high temperature corrosion device knife edge protection, which specifically comprises a clamp unit 1 adopting a brass half-wall structure, including a first clamp 11, a second clamp 12 and a third clamp 13, whose diameters are respectively matched with the large-diameter section, the middle-diameter section and the small-diameter section of the upper part, the middle part and the lower part of the tank body, and the inner wall is an arc surface matched with the tank body;

[0044] It also includes a water cooling assembly 2, which is a full-through water channel structure 21, an annular hollow channel integrally formed inside the clamp, and the two ends of the channel are reserved with sealing interfaces matched with the fluid interface 4;

[0045] Specifically, the clamp unit 1 is fixed in position through the hinge structure 31 and the high-strength bolt locking assembly 32 in the fixing mechanism 3, and the fluid interface 4 is designed with quick-sealing water inlet interface 41 and water outlet interface 42.

[0046] In this embodiment, the three clamps are unfolded by the hinge structure 31, matched and sleeved into the corresponding areas of the tank body according to the diameters, and then the locking assembly 32 is tightened after being closed, so that the clamp is tightly matched with the tank body, and the water inlet interface 41 and the water outlet interface 42 are respectively connected to the external cooling system through high-pressure hoses, ensuring that the connection is sealed and leak-free;

[0047] Further, the cooling system is started, the cooling water enters the annular hollow channel through the water inlet interface 41, exchanges heat with the inner wall of the clamp, and then returns through the water outlet interface 42, forming a circulating cooling, which is suitable for the working condition of uniform heat load of the interface, can stably control the interface temperature, and avoid high-temperature aging of the sealing material.

[0048] Embodiment two

[0049] As shown in Figure 1 and Figure 3 , based on the basis of embodiment one, the clamp unit 1, the fixing mechanism 3 and the fluid interface 4 in this embodiment are consistent with those in embodiment one;

[0050] The water cooling assembly 2 adopts a turbulence column enhanced structure 22, and the annular hollow channel is uniformly arranged with brass turbulence columns 221, which are vertically arranged on the inner wall of the channel, and are arranged in an axial and circumferential interval, and the interval between adjacent turbulence columns is 1 / 3 of the inner diameter of the channel, and both ends are fixed with the inner wall of the channel.

[0051] Specifically, in addition to the conventional cleaning, the installation firmness of the turbulence column is checked to avoid loosening, the installation of the clamp, the pipeline connection and the debugging steps are consistent with the first embodiment, and the interfaces of the clamps of each section are aligned.

[0052] After the cooling water enters the channel in this embodiment, the turbulence column breaks the laminar flow to form a turbulent flow, which strengthens the heat exchange efficiency, is suitable for the working condition that the interface has a high heat load, can quickly reduce the local high temperature, and inhibits the deformation of the interface structure due to thermal expansion and contraction.

[0053] Embodiment three

[0054] As shown in Figure 1 and Figure 4 Based on the above-mentioned first embodiment, the clamp unit 1, the fixing mechanism 3 and the fluid interface 4 are consistent with the first embodiment, and the clamp is internally reserved with a mounting groove for the adapter coil;

[0055] The water cooling assembly 2 adopts a water cooling pipe type structure 23, and a red copper annular coil is embedded in the groove of the clamp and tightly adheres to the inner wall of the clamp, and both ends of the coil are sealingly connected with the water inlet interface 41 and the water outlet interface 42 of the fluid interface 4.

[0056] Specifically, the red copper coil is embedded and fixed according to the groove track, so as to ensure that the coil is tightly adhered to the inner wall of the clamp, and the coil is aligned with the local high temperature area of the interface, such as the position of the cutting edge, according to the step of the first embodiment.

[0057] The pipeline connection and debugging are the same as the first embodiment, and the sealing property of the coil joint is mainly checked.

[0058] In this embodiment, the cooling water circulates at a high speed in the coil, and the local concentrated heat is targetedly absorbed to realize precise cooling, and the embodiment is suitable for the area that has an extremely high local heat load or needs to be protected, and can quickly reduce the temperature of the key position to protect the vulnerable parts such as the sealing ring.

[0059] The above-mentioned specific embodiments are only optional embodiments of the present application, and based on the technical scheme of the present application and the related inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations on the above-mentioned specific embodiments.

Claims

1. A convenient water-cooled structure for knife edge protection in high-temperature corrosion equipment, characterized in that, It includes three clamp units (1) with different diameters, a water-cooling assembly (2), a fixing mechanism (3), and a fluid interface (4); among which, The three clamp units (1) are hinged by the fixing mechanism (3) to form an openable and closable ring buckle, which can be adapted to the surface contours of different diameter sections of the high-temperature corrosion tank. The fixing mechanism (3) is used to lock and fix the clamp unit (1) to the surface of the tank; The water-cooling component (2) is embedded in the internal cavity of each clamp unit (1). The water-cooling component (2) includes a full-channel water structure (21), a turbulence-enhanced column structure (22), and a water-cooled pipe structure (23). The fluid interface (4) is connected to the water cooling component (2) and is used to connect the cooling fluid to form a circulating cooling system.

2. The convenient water-cooled structure for knife edge protection in a high-temperature corrosion device according to claim 1, characterized in that, The clamp unit (1) includes a first clamp (11), a second clamp (12) and a third clamp (13) arranged from top to bottom. Each clamp unit is a half-wall structure, which forms a complete ring after being closed, and is used to wrap the surface of the corresponding diameter section of the tank. The fluid interface (4) includes an inlet interface (41) and an outlet interface (42), which are connected to the water cooling assembly (2) and are used to access an external cooling water source.

3. A convenient water-cooled structure for knife edge protection in a high-temperature corrosion device according to claim 1, characterized in that, The full-through water channel structure (21) is an annular hollow channel integrally formed inside the clamp unit (1). The two ends of the channel are connected to the fluid interface (4) to form a straight circulation path for the cooling fluid.

4. A convenient water-cooling structure for knife edge protection in high-temperature corrosion equipment according to claim 1, characterized in that, The turbulence-enhancing structure (22) includes an annular hollow channel and turbulence-enhancing columns (221) evenly distributed in the channel. The turbulence-disrupting columns (221) are arranged perpendicular to the inner wall of the channel and are spaced apart along the axial and circumferential directions of the channel to disrupt the laminar flow state of the cooling fluid and enhance turbulent heat transfer.

5. A convenient water-cooling structure for knife edge protection in a high-temperature corrosion device according to claim 4, characterized in that, The cross-section of the turbulence column (221) is circular, and the spacing between adjacent turbulence columns (221) is 1 / 3 to 1 / 2 of the inner diameter of the channel.

6. A convenient water-cooled structure for knife edge protection in a high-temperature corrosion device according to claim 1, characterized in that, The water-cooled pipe structure (23) is an annular coil embedded inside the clamp unit (1). The two ends of the annular coil are sealed to the fluid interface (4) to form a closed cooling circuit. The annular coil is fitted to the inner wall of the clamp unit (1) to enhance local heat exchange.

7. A convenient water-cooled structure for knife edge protection in a high-temperature corrosion device according to claim 1, characterized in that, The fixing mechanism (3) includes a hinge structure (31) and a locking assembly (32); The hinge structure (31) is set at the connection of adjacent clamp units (1) to realize the opening and closing operation of clamp units (1); The locking component (32) is a bolt or snap-fit ​​structure, located at the mating end of the three-section clamp unit (1) after closure, and is used to lock and fix the annular snap-fit.

8. A convenient water-cooled structure for knife edge protection in a high-temperature corrosion device according to claim 1, characterized in that, The clamp unit (1) is made of copper alloy, and the water-cooling component (2) is made of the same material as the clamp unit (1).

9. A convenient water-cooled structure for knife edge protection in a high-temperature corrosion device according to claim 1, characterized in that, The three-section clamp unit (1) is clamped to the interface of different diameter sections of the high-temperature corrosion tank by the fixing mechanism (3), and the fluid interface (4) is connected to the external cooling system to form a continuous circulating cooling circuit to achieve protective cooling of the tank interface.

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