行业组件数据 · 2026

上接头(母扣)

上接头(母扣)是钻杆方钻杆系统中的精密机械接口部件,用于连接方钻杆上端与钻机旋转驱动系统。

技术定义与适配语境
典型 上接头(母扣) 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

上接头(母扣)是一种精密加工的机械接口部件,专为钻井作业中的方钻杆系统设计。它是方钻杆上端与钻机旋转驱动系统之间的主要连接点,在极端作业条件下传递扭矩、轴向载荷和旋转运动,同时保持对中性和结构完整性。 上接头(母扣)基于机械耦合原理工作,利用精密加工的配合面和锁定机构形成刚性连接。它将转盘或顶驱的旋转扭矩传递给方钻杆,同时承受钻井作业中的轴向载荷。该接头设计有快速连接/断开和安全锁定功能,以防止作业中意外脱开。

组件规格

定义
上接头(母扣)是一种精密加工的机械接口部件,专为钻井作业中的方钻杆系统设计。它是方钻杆上端与钻机旋转驱动系统之间的主要连接点,在极端作业条件下传递扭矩、轴向载荷和旋转运动,同时保持对中性和结构完整性。

上接头(母扣)基于机械耦合原理工作,利用精密加工的配合面和锁定机构形成刚性连接。它将转盘或顶驱的旋转扭矩传递给方钻杆,同时承受钻井作业中的轴向载荷。该接头设计有快速连接/断开和安全锁定功能,以防止作业中意外脱开。
工作原理
The Upper Connection Box operates on mechanical coupling principles, utilizing precisely machined mating surfaces and locking mechanisms to create a rigid connection. It transfers rotational torque from the rotary table or top drive to the Kelly Bar while accommodating axial loads during drilling operations. The box design incorporates features for quick connection/disconnection and secure locking to prevent accidental separation during operation.
材料
高强度合金钢(通常为ASTM A514或同等材料)经热处理至HRC 28-32以获得最佳强韧比。材料成分:碳0.20-0.30%锰0.70-1.00%硅0.15-0.35%铬0.40-0.65%钼0.15-0.25%微量元素受控以保证可焊性和疲劳强度。
Thread Size
6-5/8" Reg (API Spec 7-2)
Torque Rating
40,000-80,000 ft-lbs
Surface Finish
Hard chrome plated (0.002-0.003" thickness)
Connection Type
Box-and-pin threaded
Weight Capacity
150-300 tons (depending on size)
Dimensional Tolerance
±0.005" on critical mating surfaces
Operating Temperature
-20°C to +150°C
标准
ISO 10424-2API Spec 7-2DIN 332ASTM A514

行业分类与别名

上接头(母扣) 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Improper make-up torque during connection->Thread stripping or connection separation under load->Implement torque monitoring systems, use calibrated torque tools, and follow manufacturer's torque specifications precisely
Cyclic loading and vibration during drilling->Fatigue cracking in the box body or thread roots->Regular non-destructive testing (magnetic particle or ultrasonic), proper material selection with adequate fatigue strength, and stress relief heat treatment
Abrasive drilling fluid and particulate contamination->Accelerated thread wear and sealing surface damage->Implement effective sealing systems, regular cleaning protocols, and protective thread compounds with anti-galling properties

工业生态与工程逻辑

0
Thread wear leading to connection failure
1
Fatigue cracking in high-stress areas
2
Improper torque application during connection
3
Corrosion in harsh environments
4
Misalignment causing premature wear

合规与检测

tolerance
Thread pitch diameter: ±0.003", Thread taper: 2° per foot ±0.0005" per inch, Concentricity: 0.005" TIR maximum
test method
Dimensional verification with calibrated thread gauges, magnetic particle inspection for surface defects, ultrasonic testing for internal flaws, torque-to-yield testing for connection integrity

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制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the primary function of the Upper Connection Box in Kelly Bar systems?

The Upper Connection Box serves as the critical interface that connects the Kelly Bar to the drilling rig's rotary drive system, transmitting torque for rotation while supporting axial loads during drilling operations.

What standards govern the manufacturing of Upper Connection Box components?

Primary standards include API Spec 7-2 for rotary drilling equipment, ISO 10424-2 for petroleum and natural gas industry equipment, and DIN 332 for mechanical connections, along with material standards like ASTM A514.

How often should Upper Connection Box components be inspected?

Regular visual inspections should occur before each drilling operation, with detailed dimensional and NDT inspections recommended every 500-1000 operating hours or as specified by the equipment manufacturer's maintenance schedule.

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CNFX Industrial Component Index · 机械和设备制造

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URN:CNFX:ME:UNIT:UPPER_CONNECTION_BOX_