


摘 要:在我國科學技術快速發展的過程中,計算機射線照相和數字射線成像已廣泛應用于工業領域,尤其是在壓力管道的無損檢測中表現出顯著的優勢。CR技術利用成像板(簡稱IP板)代替膠片作為記錄介質,通過激光掃描轉換成數字信號;而DR技術則通過直接或間接轉換的方式,利用平板探測器快速獲取圖像。該文從2種檢測技術的成像原理、實際應用和成像質量等方面進行詳細對比,結果表明CR檢測技術雖然與膠片照相法的方式幾乎一致,但是這種檢測技術具有較高的檢測效率,并且環境適用性較強,可以滿足壓力管道中的日常檢測需要。而DR技術因其更高的成像效率和更佳的圖像分辨率,更適用于高吞吐量和高精度要求的場合。
關鍵詞:CR;DR;管道;焊縫檢測;應用對比
中圖分類號:TQ055.8 文獻標志碼:A 文章編號:2095-2945(2024)29-0193-04
Abstract: With the rapid development of science and technology in China, computer radiography and digital radiography have been widely used in the industrial field, especially in the non-destructive testing of pressure pipelines. CR technology uses imaging board (referred to as IP board) instead of film as recording medium to convert digital signals through laser scanning, while DR technology uses flat panel detectors to quickly obtain images by means of direct or indirect conversion. In this paper, the imaging principle, practical application and imaging quality of the two detection techniques are compared in detail. The results show that although the CR detection technology is almost the same as the film photography method, this detection technology has high detection efficiency and strong environmental applicability, which can meet the needs of daily inspection in pressure pipelines. DR technology is more suitable for situations with high throughput and high precision because of its higher imaging efficiency and better image resolution.
Keywords: CR; DR; pipeline; weld inspection; application comparison
我國經濟的快速發展使人們對資源的需求量不斷增加,而在液態或者汽態資源運輸過程中,經常出現因為壓力管道破裂造成的安全事故,這不僅會威脅工作人員的生命安全,還會對企業的日常運營造成影響。壓力管道作為輸送液體或氣體的關鍵設施,在石油、化工、核能等行業中具有舉足輕重的地位。這些管道在長期的運行過程中,經受著腐蝕、磨損、疲勞等多種負荷作用,可能引發管道的損傷和缺陷。因此,定期進行無損檢測以保證其安全運行是至關重要的。傳統的射線膠片檢測因其較低的靈敏度、復雜的化學處理過程和環境污染問題逐漸被現代數字射線檢測技術所取代。……