本文選題：動力鼠洞 + 夾緊扶正�。� 參考：《長江大學(xué)》2017年碩士論文

【摘要】：鼠洞是石油鉆采過程中接單根的裝置,在整個石油鉆采過程中扮演著不可或缺的角色。而在我國傳統(tǒng)的石油鉆采過程中,鼠洞接單根過程需要鉆井工人手動操作,鉆井工人的勞動強(qiáng)度大,工作條件差,安全性較低,井口機(jī)械化的改進(jìn)迫在眉睫。另一方面頂驅(qū)的出現(xiàn)使得鉆采過程中接單根變接立根成為了可能,這樣可以節(jié)約非鉆進(jìn)時間,提高鉆井效率。這一切都促進(jìn)了新型動力鼠洞的研究,促使帶有可扶正和伸縮功能的鼠洞的出現(xiàn)。對目前已廣泛使用的最新型動力鼠洞,針對其無法保證鉆桿的垂直下落和鉆桿落入底部時對底部造成較大沖擊的缺點,在仔細(xì)查閱資料和相關(guān)文獻(xiàn)后,提出了改進(jìn)設(shè)計新型的動力鼠洞扶正夾緊裝置的建議。在檢索現(xiàn)有鼠洞的工作參數(shù)后,擬定新型的動力鼠洞裝置可處理的管柱直徑范圍為76mm—254mm。新型夾緊扶正裝置的主要零件是豎直面上上下布置的兩組滾軸裝置,當(dāng)鉆桿下放進(jìn)鼠洞后,兩組滾軸裝置在液壓缸的推動下同步向中間靠攏夾緊鉆桿,保證鉆桿的垂直下落,避免與鼠洞管內(nèi)壁之間的產(chǎn)生刮擦。其次是將滾軸裝置和液壓系統(tǒng)相連接,利用人工控制的液壓系統(tǒng)來制動滾軸的轉(zhuǎn)動,通過改變滾軸和鉆桿之間摩擦力的大小來達(dá)到對下落鉆桿減速的目的。在確定新型動力鼠洞的設(shè)計方案后對動力鼠洞夾緊鉗裝置的主要零部件進(jìn)行了詳細(xì)的計算和校核,對標(biāo)準(zhǔn)件進(jìn)行了計算和選型。確定完主要零件的尺寸后,繪制二維零件圖和裝配圖,三維的建模和裝配。對結(jié)構(gòu)的ANSYS仿真分析主要進(jìn)行了靜力學(xué)和動力學(xué)兩方面。靜力學(xué)分析主要是對受力復(fù)雜的零件,文中選取了滾軸和內(nèi)殼體兩個零件,參照設(shè)計過程中計算的受力情況對零件施加載荷,對計算結(jié)果輸出的應(yīng)力和位移云圖進(jìn)行分析,確保其可靠性。在對滾軸的計算中,由于滾軸的旋轉(zhuǎn),鍵槽的受力方向一直在變化,因此在分析完滾軸的初始位置(上下兩個鍵槽的中心線在一個垂直面上)后,分別分析滾軸旋轉(zhuǎn)45°,90°,135°的位移和應(yīng)力云圖。動力學(xué)分析主要是對夾緊扶正裝置中的齒輪進(jìn)行了模態(tài)分析,避免因齒輪的轉(zhuǎn)速和齒輪本身的固有頻率同步形成共振,對夾緊扶正裝置造成破壞。
[Abstract]:Rodent hole is a device with single root in the process of oil drilling and production, which plays an indispensable role in the whole process of oil drilling and production. In the traditional oil drilling and production process in China, the drilling workers need manual operation to connect the single root in the rat hole. The workers' labor intensity is high, the working conditions are poor, the safety is low, and the improvement of the mechanization of the wellhead is imminent. On the other hand, the emergence of top drive makes it possible to connect single root to vertical root in the process of drilling and production, which can save non-drilling time and improve drilling efficiency. All this contributed to the study of new dynamic rodents and the emergence of rodent caverns with rectifying and retractable functions. For the most new type of power rat hole which has been widely used at present, aiming at the disadvantage that it can not guarantee the vertical drop of drill pipe and the bigger impact on bottom when the drill pipe falls into the bottom, after carefully consulting the data and related literature, Some suggestions for improving the design of a new type of clamping device for power rodent hole are put forward. After retrieving the working parameters of the existing rodent holes, the diameter range of the new power rodent hole device is 76mm-254mm. The main parts of the new clamping and leveling device are two groups of rolling shaft devices arranged up and down the vertical plane. When the drill pipe is put down into the rat hole, the two groups of rolling shaft devices synchronously close the clamped drill pipe to the middle under the push of the hydraulic cylinder, so as to ensure the vertical drop of the drill pipe. Avoid scratching between the inner wall of the rat hole tube. Secondly, the roller device is connected with the hydraulic system, and the manual controlled hydraulic system is used to brake the rotation of the roller shaft. The purpose of decelerating the falling drill pipe is achieved by changing the friction between the roller and the drill pipe. After determining the design scheme of the new power rodent hole, the main parts of the clamping clamp device of the power rodent hole are calculated and checked in detail, and the standard parts are calculated and selected. After determining the dimensions of the main parts, draw two-dimensional part drawings and assembly drawings, 3-D modeling and assembly. The ANSYS simulation analysis of the structure is mainly carried out in two aspects: statics and dynamics. Static analysis is mainly for the parts with complicated forces. Two parts, the roller and the inner shell, are selected in this paper. According to the calculated stress in the design process, the load is applied to the parts, and the stress and displacement cloud diagram of the output of the calculation results are analyzed. Ensure its reliability. In the calculation of the roller shaft, the stress direction of the keyway is always changing because of the rotation of the roller shaft, so after analyzing the initial position of the roller shaft (the center line of the upper and lower keyways is on a vertical plane), The displacement and stress cloud images of 45 擄~ 90 擄~ (135 擄) rotation of the roller shaft are analyzed respectively. The main purpose of dynamic analysis is to analyze the mode of the gear in the clamping and leveling device to avoid resonance caused by the speed of the gear and the inherent frequency of the gear itself and damage to the clamping and leveling device.
【學(xué)位授予單位】：長江大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TE9

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本文編號：2055005