Vacuum type high-temperature environment device
By using a multi-layered water-cooled cavity and a mirror-like surface design with a metal heat shield, the problems of difficulty in quickly achieving vacuum levels and easy damage to porous materials in existing high-temperature vacuum environment devices are solved, thus enabling rapid high-vacuum and efficient experiments.
Patent Information
- Application Number
- CN202520295569.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-02-20
AI Technical Summary
Existing vacuum high-temperature environment devices are inefficient when reaching high vacuum levels, and porous materials are easily damaged, resulting in economic losses and research delays. Furthermore, porous materials have short lifespans and require frequent replacement.
It adopts a multi-layer water-cooled cavity and metal heat shield structure, combined with a mirror-grade surface and stainless steel welding to form an all-metal heat insulation layer, which prevents air from being trapped, quickly achieves a high vacuum degree, and ensures temperature uniformity through a plate-type heating element.
It enables rapid attainment of extremely high vacuum levels, avoids damage and frequent replacement of porous materials, reduces maintenance costs, and improves the lifespan of the device and experimental efficiency.
Smart Images
Figure CN223597363U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of high-temperature material mechanical testing devices, specifically a vacuum high-temperature environment device. Background Technology
[0002] In high-temperature mechanical testing of metallic materials, most of the materials under study undergo oxidation in high-temperature atmospheric environments. This phenomenon significantly impacts the mechanical properties of metallic materials at high temperatures. To accurately determine the high-temperature mechanical properties of these materials, devices capable of creating vacuum or inert gas-filled high-temperature environments have emerged. Currently, most commercially available vacuum high-temperature environment devices use porous materials (such as corundum, alumina fiber, etc.) or a combination of porous materials and metal heat shields for their internal insulation layers. This type of insulation layer struggles to meet the high vacuum requirements (generally, the highest achievable vacuum level is 5 × 10³, but most users desire 10⁴), or requires a long time to reach the required vacuum level (typically within one hour). It fails to meet users' demands for both speed and low vacuum. Commonly used vacuum high-temperature environment devices suffer from the following problems:
[0003] Air stored inside porous materials is extremely difficult to extract, requiring a long time and possibly never being extracted, resulting in the vacuum level failing to meet requirements.
[0004] Porous materials are prone to shedding dust and debris during use, and vacuum pumps, especially high-precision instruments like molecular pumps, require a high degree of cleanliness in their chambers. Dust and debris generated by porous materials can easily be drawn into the pump body during operation, causing damage, significant economic losses, and delays in research projects.
[0005] Porous materials are brittle and easily broken, have a short lifespan, require regular replacement, and are troublesome to maintain. Utility Model Content
[0006] The purpose of this invention is to provide a vacuum-type high-temperature environment device to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a vacuum high-temperature environment device, comprising a multi-layer water-cooled cavity, one side of which is connected to a multi-layer water-cooled front cavity via a hinge, a glass window is provided on the outer surface of the multi-layer water-cooled front cavity, a connecting valve stem is provided on the multi-layer water-cooled front cavity, a water-cooled heat insulation layer is fixedly provided inside the multi-layer water-cooled cavity, a hot chamber is above the water-cooled heat insulation layer, and a cold chamber is below the water-cooled heat insulation layer, metal heat insulation screens are fixedly connected to both the multi-layer water-cooled front cavity and the hot chamber, the positions of the metal heat insulation screens are corresponding, a ceramic component mounting position is provided on the metal heat insulation screen, and a plate heating element is provided on the ceramic component mounting position.
[0008] Preferably, the internal cavity formed by the combination of the multi-layer water-cooled cavity and the multi-layer water-cooled front cavity has a mirror-grade surface. Both the multi-layer water-cooled cavity and the multi-layer water-cooled front cavity are made by welding multiple layers of stainless steel. Vacuum flange interfaces are provided at both the upper and lower ends of the multi-layer water-cooled cavity.
[0009] Preferably, the metal heat insulation screen is formed by splicing multiple layers of metal, and each layer of metal in the metal heat insulation screen is separated by metal pillars. The joint between the metal heat insulation screen on the multi-layer water-cooled front cavity and the metal heat insulation screen in the hot cavity is staggered.
[0010] Preferably, the plate heating element is laid flat on the ceramic column of the ceramic component mounting position, and the plate heating element is distributed in three sections: upper, middle and lower.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] 1. The water-cooled insulation layer is an all-metal insulation layer without porous materials. The insulation layer and cavity surface are both mirror-grade surface finishes, leaving no place for air to hide inside the furnace. The entire device can reach an extremely high vacuum level in a short time to meet user needs.
[0013] 2. The cavity adopts a multi-layer water-cooled structure as its main body, which ensures the strength of the main cavity while ensuring that the surface temperature of the cavity remains at room temperature in high-temperature environments. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 Here is a schematic diagram of the internal structure of the cavity in this utility model:
[0016] Figure 3 This is a schematic diagram of the metal heat insulation screen structure of this utility model.
[0017] In the diagram: 1. Multi-layer water-cooled cavity; 2. Multi-layer water-cooled front cavity; 3. Glass window; 4. Connecting valve stem; 5. Water-cooled insulation layer; 6. Metal heat shield; 7. Hot chamber; 8. Cold chamber. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0019] Please refer to 1-2. One embodiment of this utility model is provided: a vacuum high-temperature environment device, including a multi-layer water-cooled cavity 1. One side of the multi-layer water-cooled cavity 1 is connected to a multi-layer water-cooled front cavity 2 via a hinge. A glass window 3 is provided on the outer surface of the multi-layer water-cooled front cavity 2. A connecting valve stem 4 is provided on the multi-layer water-cooled front cavity 2. A water-cooled heat insulation layer 5 is fixedly provided inside the multi-layer water-cooled cavity 1. A hot chamber 7 is above the water-cooled heat insulation layer 5, and a cold chamber 8 is below the water-cooled heat insulation layer 5. Both the multi-layer water-cooled front cavity 2 and the hot chamber 7 are fixedly provided. The metal heat shield 6 is fixedly connected, and the position of the metal heat shield 6 is corresponding. The metal heat shield 6 is provided with a ceramic component mounting position, and a plate heating element is provided on the ceramic component mounting position. The multi-layer water-cooled cavity 1 and the multi-layer water-cooled front cavity 2 form a complete sealed cavity. The multi-layer water-cooled cavity 1 is the main part of the entire device, which undertakes the sealing function and the installation of the metal heat shield 6. The cavity is made of multi-layer stainless steel welded together. The inner and outer surfaces are both mirror-grade surfaces. The whole is a box-type structure with vacuum flange interfaces reserved at the top and bottom for use with a mechanical testing machine.
[0020] The internal cavity formed by the combination of the multi-layer water-cooled cavity 1 and the multi-layer water-cooled front cavity 2 has a mirror-grade surface. Both the multi-layer water-cooled cavity 1 and the multi-layer water-cooled front cavity 2 are made of multi-layer stainless steel welding. Vacuum flange interfaces are provided at both the upper and lower ends of the multi-layer water-cooled cavity 1. The mirror-grade surface ensures that there is no space for air to hide inside the cavity. During vacuum pumping, air can be quickly extracted, achieving an extremely high vacuum degree in a very short time.
[0021] The metal heat shield 6 is formed by splicing multiple layers of metal. Each layer of metal in the metal heat shield 6 is separated by metal pillars. The joints of the metal heat shield 6 on the multi-layer water-cooled front cavity 2 and the metal heat shield 6 in the hot cavity 7 are staggered. The multi-layer structure can prevent heat loss and ensure that the internal temperature does not drop too quickly. Furthermore, the staggered joints effectively prevent heat from flowing out directly from the opening and closing gaps.
[0022] The plate heating element is laid flat on the ceramic column at the ceramic component mounting position. The plate heating element is distributed in three sections: top, middle and bottom. The three-section distribution can ensure the uniformity of temperature. During heating, heat is evenly generated from three positions to increase the temperature.
Claims
1. A vacuum-type high-temperature environment device, comprising a multi-layer water-cooled cavity (1), characterized in that: One side of the multi-layer water-cooled cavity (1) is connected to the multi-layer water-cooled front cavity (2) via a hinge. A glass window (3) is provided on the outer surface of the multi-layer water-cooled front cavity (2). A connecting valve stem (4) is provided on the multi-layer water-cooled front cavity (2). A water-cooled heat insulation layer (5) is fixedly provided inside the multi-layer water-cooled cavity (1). A hot chamber (7) is above the water-cooled heat insulation layer (5), and a cold chamber (8) is below the water-cooled heat insulation layer (5). Metal heat insulation screens (6) are fixedly connected to both the multi-layer water-cooled front cavity (2) and the hot chamber (7). The positions of the metal heat insulation screens (6) are corresponding. A ceramic component mounting position is provided on the metal heat insulation screen (6), and a plate heating element is provided on the ceramic component mounting position.
2. The vacuum high-temperature environment device according to claim 1, characterized in that: The internal cavity formed by the combination of the multi-layer water-cooled cavity (1) and the multi-layer water-cooled front cavity (2) has a mirror-grade surface. Both the multi-layer water-cooled cavity (1) and the multi-layer water-cooled front cavity (2) are made by welding multiple layers of stainless steel. Vacuum flange interfaces are provided at both the upper and lower ends of the multi-layer water-cooled cavity (1).
3. The vacuum high-temperature environment device according to claim 1, characterized in that: The metal heat insulation screen (6) is formed by splicing multiple layers of metal. Each layer of metal in the metal heat insulation screen (6) is separated by metal pillars. The joint between the metal heat insulation screen (6) on the multi-layer water-cooled front cavity (2) and the metal heat insulation screen (6) in the hot cavity (7) is staggered.
4. The vacuum high-temperature environment device according to claim 1, characterized in that: The plate-type heating element is laid flat on the ceramic column of the ceramic component mounting position, and the plate-type heating element is distributed in three sections: upper, middle and lower.