密不泄露Manifold Reducer异径接头/Spool Piece直通/短接/可拆短管

管汇中，Manifold Reducer/Spool Piece的出现是为了满足管道、阀门和设备网络中对多功能连接器和过渡点的需求。

异径接头术语、结构和注解

1、D2>D1时，xl惯称为“变径接头或大小头”，标准名“异径接头(Reducer)”。

2、D2=D1时，xl惯称为“直通”，标准名 “可拆短管(Spool Piece)”

自从OCIMF和CDI在2017年发布《油轮和化学品船管汇及附件建议》第一版之后(以下简称“建议”)，全球液货船关联行业单位，如港口、码头、船舶设计院、船舶建造厂、船级社、船公司等，对新建造的液货船都按“建议”的最新技术要求进行设计、建造及检验

典型油船的管汇接头形式及名称

(内外侧双面焊接，NDE:RT/UT/PT/MT/Hydro-Test,杜绝泄漏可能性)

(To provide a secure connection to other components-法兰工作面的加工光洁度完全满足LNG其他传输要求)

Transition spool pieces emerged as a response to the need for versatile connectors and transition points within the network of pipes, valves, and equipment.

Types of Transition Spool Pieces

Transition spool pieces come in various types, each designed for specific applications and scenarios. Some common types include:

1. Size Transition Spool Pieces

These spool pieces are used to connect pipes or equipment of different sizes. They are particularly useful when transitioning between wellhead components and pipelines of varying diameters.

2. Pressure Transition Spool Pieces

Pressure transition spool pieces are engineered to accommodate varying pressure ratings within an oil or gas system. They are crucial for maintaining the safety and integrity of the overall system.

3. Material Transition Spool Pieces

When different materials are used in different parts of a system, such as carbon steel, stainless steel, or corrosion-resistant alloys, material transition spool pieces ensure a seamless connection while preventing corrosion or material incompatibility issues.

4. Connection Type Transition Spool Pieces

In situations where equipment or piping systems have different connection types, such as flanged, threaded, or welded, connection type transition spool pieces bridge the gap and ensure a secure fit.

Applications of Transition Spool Pieces

Transition spool pieces find applications throughout the oil and gas industry, and their versatility makes them indispensable in various scenarios:

1. Wellhead Assembly

Transition spool pieces are often used in wellhead assemblies, connecting the wellhead equipment to the production or injection lines. This is critical for ensuring efficient fluid transfer and maintaining wellhead integrity.

2. Pipeline Construction and Repair

During the construction of pipelines or when repairing existing pipelines, transition spool pieces help connect different sections, sizes, or materials, ensuring a continuous flow path and preventing leaks or disruptions.

3. Pressure Management

In oil and gas processing facilities, pressure transition spool pieces are vital for managing variations in pressure levels between different equipment and systems. They facilitate safe and efficient fluid transfer while mitigating pressure-related risks.

4. Material Compatibility

Transition spool pieces play a crucial role in ensuring compatibility between different materials used in oil and gas operations. This is especially important in corrosive environments or when transitioning from downhole operations to surface facilities.