Heat insulation mechanism of eddy current detection probe
By designing flexible heat-conducting and heat-insulating components on the eddy current detection probe, combined with a spiral groove cooling assembly, the problem of eddy current detection equipment failing to operate normally under high-temperature environments was solved. This achieved efficient probe heat insulation and cooling, improving detection efficiency and equipment stability.
Patent Information
- Application Number
- CN202423292561.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing eddy current testing equipment cannot function properly in high-temperature environments, resulting in extended testing cycles and failure to detect potential safety hazards in a timely manner.
A heat insulation mechanism for an eddy current detection probe was designed, which uses flexible heat-conducting and heat-insulating components, combined with a spiral groove cooling assembly, and utilizes copper and asbestos materials for effective heat insulation and cooling, enabling the probe to operate normally in high-temperature environments.
This technology effectively insulates and cools the eddy current detection probe in high-temperature environments, improving detection efficiency and ensuring the safe operation of the equipment and the accuracy of the detection results.
Smart Images
Figure CN223926348U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of non-destructive testing equipment technology, specifically to a heat insulation mechanism for an eddy current testing probe. Background Technology
[0002] In industrial production, particularly in the maintenance and safety inspection of rotating machinery systems such as engines and steam turbines, non-destructive testing (NDT) technology plays a crucial role. Among these, eddy current testing, a non-contact electromagnetic testing method, is widely used in the quality control and safety assessment of critical components due to its ability to efficiently and accurately detect internal defects (such as cracks and inclusions) in conductive materials.
[0003] The basic principle of eddy current testing is to use electromagnetic induction to generate eddy currents on the surface or inside the object being tested, and to infer internal defects by detecting changes in the eddy currents. This method has advantages such as fast detection speed, high sensitivity, and no need to damage the sample, making it particularly suitable for in-situ testing of critical components in complex mechanical systems such as engines and steam turbines.
[0004] However, the application of eddy current testing technology faces a severe challenge: testing in high-temperature environments. During operation, rotating mechanical systems such as engines and turbines experience temperatures reaching hundreds of degrees Celsius on the surface of their components and in their surrounding environment due to physicochemical reactions such as friction and combustion. Existing eddy current testing equipment, due to the thermal sensitivity of its electronic components and sensors, typically operates at temperatures not exceeding 50°C. This means that before conducting eddy current testing, the tested area must be allowed to cool naturally to below a safe temperature. This undoubtedly significantly prolongs the testing cycle, reduces testing efficiency, and may even lead to missing the optimal opportunity to detect potential safety hazards due to delayed testing. Utility Model Content
[0005] In view of this, the present invention provides a heat insulation mechanism for an eddy current detection probe, which can...
[0006] To solve the above-mentioned technical problems, this utility model provides a heat insulation mechanism for an eddy current detection probe, comprising:
[0007] The heat-conducting component is a ring-shaped part that wraps around the outer surface of the probe tip. The body is made of flexible material and is connected to the cooling component. Through the connection with the cooling component, heat exchange is achieved to cool the outer wall of the detector.
[0008] The heat insulation component is a ring-shaped component that wraps around the outer surface of the heat-conducting component and is made of a flexible material. It is used to isolate the external temperature from being transferred to the heat-conducting component.
[0009] The cooling component achieves physical cooling of the heat-conducting parts through heat exchange.
[0010] The end of the heat insulation component away from the handle is also equipped with a retaining ring corresponding to the heat conduction component. The retaining ring is used to prevent the external high temperature from directly contacting the heat conduction component.
[0011] The cooling component includes several sets of two spiral grooves disposed on the heat-conducting component. The ends of the two spiral grooves away from the handle are connected to each other, and the ends of the two spiral grooves near the handle are connected to the end face of the heat-conducting component to form a feeding port. The cooling medium is transported inside the spiral grooves.
[0012] The spiral groove is located on the outer wall of the heat-conducting component, which reduces the machining difficulty of the spiral groove.
[0013] Two feeding pipes are also provided for the two feeding ports. Each feeding port has a connecting pipe at its end. The connecting pipe has a threaded groove. The feeding pipe is fixed to the connecting pipe through the threaded groove. The feeding medium is easily transported into the spiral groove and forms a backflow through the feeding pipe.
[0014] The heat-conducting component is made of copper, which allows for better cooling of the outer wall of the probe.
[0015] Both the heat insulation component and the retaining ring are made of asbestos material. At high temperatures, asbestos material will crystallize into a ceramic-like substance. This ceramic-like substance can gradually prevent the flame from burning inward, thereby effectively insulating the outer wall of the probe and the heat-conducting component.
[0016] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:
[0017] 1. High-efficiency heat insulation and cooling: The heat insulation component effectively isolates the probe from the influence of high external temperatures. Made of asbestos, this material solidifies into a ceramic-like substance at high temperatures, providing excellent heat insulation and ensuring normal operation of the probe in high-temperature environments. Simultaneously, the combined use of heat-conducting and cooling components effectively cools the probe tip, further improving its stability and lifespan.
[0018] 2. High flexibility and adaptability: Both the heat-conducting and insulation components are made of flexible materials, allowing the insulation mechanism to flexibly adapt to eddy current detection probes of different shapes and sizes, thus improving its versatility and practicality. Furthermore, the flexible materials also possess excellent sealing properties, effectively preventing leakage of the cooling medium and ensuring the cooling effect.
[0019] 3. Cooling medium recycling: The cooling component adopts a spiral groove design, which, through the cooperation of the feeding pipe and connecting pipe, enables the recycling of the cooling medium. This not only improves cooling efficiency but also reduces operating costs. At the same time, the spiral groove design also reduces processing difficulty and improves production efficiency.
[0020] 4. Simple structure and easy maintenance: The heat insulation mechanism of this utility model has a simple structure, with tight connections between the components, making it easy to disassemble and clean. This not only facilitates daily maintenance but also reduces maintenance costs.
[0021] 5. Improved Detection Efficiency: Due to the effective heat insulation and cooling effect of the heat insulation mechanism, the eddy current detection probe can operate normally in high-temperature environments, thus greatly improving detection efficiency. This is of great significance for the maintenance and safety inspection of rotating machinery systems such as engines and steam turbines, enabling the timely detection of potential safety hazards and ensuring the safe operation of equipment. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the heat insulation mechanism of an eddy current detection probe according to the present invention;
[0023] Figure 2 This utility model Figure 1 Schematic diagram of the structure at point A;
[0024] Figure 3 This is a structural schematic diagram of the side view of this utility model.
[0025] Explanation of reference numerals in the attached figures:
[0026] 100. Heat-conducting component; 101. Spiral groove; 102. Feed port;
[0027] 200. Thermal insulation components;
[0028] 300. Cooling components;
[0029] 400. Connecting pipe; 401. Feeding pipe. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figure 1-3 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.
[0031] like Figure 1 , 2As shown in Figure 3: The probe includes a heat-conducting element 100 wrapped around its outer surface. The heat-conducting element 100 is evenly distributed in a ring structure at the probe end, and a cooling component 300 is connected to the heat-conducting element 100. The cooling component can cool the heat-conducting element 100, and due to the thermal conductivity of the heat-conducting element 100, heat exchange can be formed between it and the outer wall of the probe, thereby achieving the purpose of cooling the outer wall of the probe and preventing the probe from being affected by high temperatures, thus ensuring the accuracy of the probe's detection results.
[0032] Specifically, based on the aforementioned structure, a heat insulation component 200 is also wrapped in a ring around the outer wall of the heat-conducting component 100. The heat insulation component 200 is used to isolate the external temperature from being transferred to the heat-conducting component 100. That is, the heat insulation component 200 will not affect the cooling effect of the cooling component 300 on the heat-conducting component 100, thereby further ensuring that the probe can perform normal detection work.
[0033] Based on the above features, both the heat-conducting component 100 and the heat-insulating component 200 are made of deformable flexible material, that is, when the probe is inserted into a narrow space, it can bend, thereby allowing the probe end to be inserted into a designated position, so that the probe can perform detection work.
[0034] like Figure 3 As shown,
[0035] The end of the heat insulation component 200 away from the handle is also provided with a retaining ring corresponding to the heat conduction component 100. The cross-section of the retaining ring is adapted to the gap between the heat insulation component 200 and the heat conduction component 100. The retaining ring is used to prevent the external high temperature from directly contacting the heat conduction component 100. That is, the retaining ring can prevent the external high temperature from contacting the heat conduction component 100 through the gap between the heat insulation component 200 and the heat conduction component 100, thereby preventing the temperature of the heat conduction component 100 from rising. This will reduce the cooling effect of the heat conduction component 100 on the outer surface of the probe.
[0036] like Figure 2 As shown,
[0037] The cooling assembly 300 includes several sets of two spiral grooves 101 disposed on the heat-conducting component 100. The ends of the two spiral grooves 101 away from the handle are connected to each other. Cooling medium flows between the spiral grooves 101, and the cooling medium between the two spiral grooves 101 can circulate with each other. The ends of the two spiral grooves 101 near the handle are connected to the end face of the heat-conducting component 100 to form a feeding port 102. That is, the cooling medium can be delivered to one of the spiral grooves 101 through one of the feeding ports 102. In this way, the cooling medium can flow through the other spiral groove 101 and then be discharged through the other feeding port 102. In this way, heat exchange can be formed between the cooling medium and the heat-conducting component 100, and the heat carried on the heat-conducting component 100 can be removed. After the temperature of the heat-conducting component 100 is reduced, the outer surface of the probe can be cooled.
[0038] Furthermore, the discharged cooling medium can be collected, treated, and reused, thereby reducing the material consumption generated by cooling.
[0039] In this embodiment, the cooling medium can be a refrigerant, cold air flow, or cold water, etc., which are materials that can be used for cooling. Among them, cold water is the easiest to produce and use, has the lowest cost, and the highest cost performance.
[0040] like Figure 1 , 3 As shown,
[0041] The spiral groove 101 is located on the outer wall of the heat-conducting component 100, which can reduce the processing difficulty of the spiral groove 101. When the spiral groove 101 becomes blocked, the heat insulation component 200 can be removed to clean the spiral groove 101.
[0042] like Figure 1 , 2 As shown,
[0043] Two feeding pipes 401 are also provided corresponding to the two feeding ports 102. The two feeding pipes 401 are connected to the corresponding feeding ports 102. One feeding pipe 401 is connected to the external cooling medium conveying equipment, and the other feeding pipe 401 is connected to the external cooling medium collection structure. Thus, the cooling medium can be easily conveyed into the spiral groove 101 or the cooling medium that has undergone heat exchange can be collected through the two feeding pipes 401.
[0044] Each feed port 102 is equipped with a connecting pipe 400 at its end. The connecting pipe 400 has a threaded groove. The feed pipe 401 is fixed to the connecting pipe 400 through the threaded groove. That is, the feed pipe 401 can be quickly fixed to the heat-conducting component 100 by screwing. This makes it easy to remove the feed pipe 401 and facilitate the maintenance of the feed pipe 401 or the probe.
[0045] The heat-conducting component is made of copper, which has good thermal conductivity, flexibility and ductility, thus meeting the purpose of the heat-conducting component 100 exchanging heat with the probe and still being able to function normally after deformation. Alternatively, the heat-conducting component 100 can also be made of aluminum or thermally conductive silicone.
[0046] Both the heat insulation component 200 and the retaining ring are made of asbestos material. At high temperatures, the asbestos material will solidify into a ceramic-like substance. This ceramic-like substance can gradually prevent the flame from burning inward, thereby effectively insulating the outer wall of the probe and the heat-conducting component 100. Meanwhile, the heat insulation component 200 can also be made of aerogel or calcium silicate board material.
[0047] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0048] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A heat insulation mechanism for an eddy current detection probe, characterized in that: include: The heat-conducting component (100) is wrapped in a ring around the outer surface of the probe end and is made of flexible material. It is connected to the cooling component (300) and achieves heat exchange through connection with the cooling component (300) to achieve the purpose of cooling the outer wall of the detector. The heat insulation component (200) is wrapped in a ring around the outer surface of the heat-conducting component (100), and its body is made of a flexible material to isolate the external temperature from being transferred to the heat-conducting component (100). The cooling component (300) achieves physical cooling of the heat-conducting component (100) through heat exchange; the cooling component (300) includes several sets of two spiral grooves (101) disposed on the heat-conducting component (100), the ends of the two spiral grooves (101) away from the handle are connected to each other, and the ends of the two spiral grooves (101) near the handle are connected to the end face of the heat-conducting component to form a feeding port (102).
2. The heat insulation mechanism of the eddy current detection probe as described in claim 1, characterized in that: The heat insulation component (200) is also provided with a retaining ring at the end away from the handle, corresponding to the heat conduction component (100). The retaining ring is used to prevent the external high temperature from directly contacting the heat conduction component (100).
3. The heat insulation mechanism of the eddy current detection probe as described in claim 1, characterized in that: The spiral groove (101) is located on the outer wall surface of the heat-conducting component (100).
4. The heat insulation mechanism of an eddy current detection probe as described in claim 1 or 3, characterized in that: Two feeding pipes (401) are also provided for the two feeding ports (102). Each feeding port (102) has a connecting pipe (400) at its end. The connecting pipe (400) has a threaded groove. The feeding pipe (401) is fixed to the connecting pipe (400) through the threaded groove.
5. The heat insulation mechanism of the eddy current detection probe as described in claim 1, characterized in that: The heat-conducting component is made of copper.
6. The heat insulation mechanism of the eddy current detection probe as described in claim 2, characterized in that: Both the heat insulation element (200) and the retaining ring are made of asbestos material.