单波纹管轴向补偿
01 球面角向运动：球体与球座或壳体发生受控相对转动，用于适应管段角向变化和旋转运动。
产品概述
产品概述
Spherical / Ball Joint Compensator
Spherical Expansion Joint
A spherical expansion joint uses controlled rotation between a ball-shaped pipe section and a sealed socket or housing to provide angular and rotational flexibility in piping systems. One unit can work as a sealed swivel joint; two or more units can be arranged in an engineered offset layout to convert thermal growth, lateral movement, equipment movement or settlement into angular rotation. Final rotation angle, sealing construction, compensation layout and load limits must follow the confirmed drawing.
Structure & Working Principle
Construction and Working Principle
A typical spherical expansion joint includes a ball pipe section, casing or socket, sealing rings or packing, gland or retaining flange, support parts, end connections and fastening hardware. Movement is produced by spherical rotation, not by bellows deformation or sleeve sliding.
Basic Construction
Pipe end
Casing / socket
Ball pipe section
Seal and gland area
Material grade, packing, support details and gland construction should be confirmed by order drawing.
Spherical Rotation and Linkage Compensation
Neutral
Joint remains at installed center position.
Angular rotation
The ball rotates inside the sealed socket.
Offset layout
Multiple joints convert linear movement into angular rotation.
When the pipe moves because of heat, equipment movement or settlement, the ball rotates around its center while the sealing system maintains the pressure boundary.
Engineering note: Allowable angle, friction torque, seal material and pressure-load data are not confirmed in the current product file, so this page does not borrow angle or movement values from other manufacturers.
Product Features
Features and Engineering Value
01
Angular ball movement
The ball-and-socket structure accommodates controlled angular pipe movement.
02
Offset compensation layout
Two or more joints can be arranged to handle larger lateral or thermal movement.
03
Flanged or welded ends
The current product record supports flanged or welded connections.
04
Project-based confirmation
Size, pressure, material, length and sealing construction are confirmed by project data.
Technical Specifications
Specifications and Selection Data
The values below come from the current product record and saved product detail source. They are used as a quotation and selection starting point only. Final supply data, component materials, sealing construction, flange standard, rotation angle and inspection requirements must follow the approved technical datasheet and manufacturing drawing.
| Item | Current Record | Page Treatment |
|---|---|---|
| Nominal size range | 1/2"-48" (DN15-DN1200) | Used from current record |
| Nominal pressure | PN10 / PN16 / PN25 | Used from current backend parameters |
| Connection | Flanged / welded | Used from current record |
| Material record | SS304 / 316L | Component-level BOM to be confirmed |
| Length | Custom Length | Confirmed by project drawing |
| Allowable rotation angle | To be confirmed by manufacturer | No invented angle value |
| Seal material | To be confirmed by manufacturer | Selected by medium, temperature and pressure |
| Flange standard / test pressure | To be confirmed by manufacturer | Confirmed during RFQ review |
| Information Type | Required Details |
|---|---|
| Pipe and connection | DN/NPS, pipe OD, wall thickness, flange standard or welded-end dimensions. |
| Operating conditions | Medium, design pressure, operating pressure, design temperature and temperature fluctuation. |
| Movement and layout | Angular movement, lateral movement, thermal growth, number of joints, offset length and space limits. |
| Engineering constraints | Anchors, guides/supports, allowable loads, installation direction and maintenance space. |
Applications
Typical Applications
District heating lines
Used on steam, hot-water and heating pipelines with thermal growth and angular layout needs.
Industrial process piping
Suitable for process pipe sections where angular movement must be released through a sealed ball joint.
Equipment connection areas
Can be evaluated near equipment where relative movement or settlement needs to be handled.
Retrofit and maintenance projects
Useful when existing piping space requires a reviewed compensation layout.
Installation
Installation and Use Requirements
Check before installation
Confirm model, connection dimensions, sealing area, orientation and visible condition.
Do not force alignment
Do not use the joint to pull, twist or correct severe pipe misalignment.
Follow the layout design
Distance, angle and supports for two or more joints should follow piping calculation.
Reserve maintenance space
Allow access for seal adjustment, packing replenishment or inspection where applicable.
Installation boundary: A spherical expansion joint is not a universal axial expansion device. Anchors, supports, guides and piping loads should be confirmed by the project designer.
Quality Control
Quality Control and Shipment Checks
Dimension and appearance
Check connection dimensions, seal/gland area, ball surface condition and fasteners.
Sealing and pressure checks
Confirm sealing, pressure or performance inspection items according to the order and applicable standard.
Packing and marking
Confirm packing and labels according to size, weight, end protection and shipping method.
FAQ
Frequently Asked Questions
What movement does a spherical expansion joint mainly absorb?
One unit mainly provides angular and rotational movement. Larger linear thermal movement normally requires two or more ball joints arranged with an offset pipe section.
Can it replace an axial bellows expansion joint directly?
Not directly. A spherical joint works by ball rotation, while an axial bellows joint works by bellows compression or extension. Their layout and support requirements are different.
How should flanged and welded ends be selected?
Flanged ends are convenient for removal and maintenance. Welded ends are used when the piping layout requires welded connection. Final selection depends on standard, rating and maintenance access.
What information is important for quotation?
Please provide DN/NPS, pressure, temperature, medium, connection type, movement direction, required rotation angle, number of joints, installation space, quantity and drawings or site sketches.
Can seal material and rotation angle be selected from a general value?
No. Seal material, rotation angle and test pressure depend on medium, temperature, pressure and construction. They must follow the confirmed datasheet and manufacturing drawing.
Request Spherical Expansion Joint Selection Support
Share pipe size, pressure, temperature, medium, connection type, movement requirement and drawings so the required number of ball joints, layout, seal design and quotation range can be reviewed.
Send RFQRelated Products
Related Products
Sleeve, Rotary and Spherical Compensators
View related compensator products.
Single Axial Expansion Joint
For straight axial pipe movement compensation.
C2F Double Flanged Dismantling Joint
For valve installation, removal and force transmission.
Drawing-Based Customization
Send drawings or conditions for structure review.
结构组成与工作原理
结构组成与工作原理
典型球形补偿器由球体或球头接管、球座或壳体、压紧或保持结构、密封组件及端部连接组成。产品通过球面配合实现受控角向转动，具体内部结构以制造图纸为准。
球形补偿器结构组成图，展示球体、球座壳体、密封压紧区域和端部连接，不含文字
球形补偿器球面转动与偏置组合补偿工作原理图，不含文字
结构组成：重点识别球体或球头接管、球座或壳体、压紧保持结构、密封区域和端部连接。具体密封形式、压盖结构及部件材料以制造图纸和BOM为准。
压力推力提示：
工作原理：管道产生角向或相对位移时，球体围绕球心在球座或壳体内受控转动；成对或多点布置时，偏置管段可把线性位移转换为各接头的角向运动。
产品特点
产品特点
球形补偿器通过球面转动为刚性管路提供可设计的角向和旋转自由度，并可结合管道几何形成组合位移补偿方案。
运动方向便于控制
02 组合补偿布置：两个或多个球形接头结合偏置管段，可将较大的线性热位移或相对位移转换为角向运动。
连接结构可选
03 连接方式可选：当前资料显示可采用法兰端或焊接端，具体接口尺寸和连接标准按项目确认。
按项目工况设计
04 按工况确认结构：尺寸、压力、材料、密封、允许转角及组合方式需要结合介质、温度、位移和系统受力确认。
选型边界：如项目只需要明确的直线轴向伸缩，应同时评估套筒式或轴向波纹管膨胀节，不应仅因名称相近而直接替换。
技术规格与选型
技术规格与选型
参考尺寸仅供选型。可根据项目定制尺寸和法兰标准。
| 技术规格 | |||
|---|---|---|---|
| 连接方式 | 法兰 / 焊接 | 材料选项 | 不锈钢 304 / 316L |
| 尺寸范围 | 1/2英寸–48英寸（DN15–DN1200） | 压力等级 | PN10 / PN16 / PN25 |
| 结构长度 | 支持定制 | 定制服务 | 按项目和订单要求确认 |
| 原产地 | 中国河南 | 包装方式 | 木箱 |
| 允许转角 | 未确认 | 密封材料 / 试验压力 | 未确认，按订单技术文件确认 |
选型说明：以上规格按当前提供的产品参数截图整理，并清除了明显不适合作为工程技术参数的电商字段。具体DN与压力等级组合、允许转角、设计温度、密封材料、试验压力及执行标准，应以厂家正式技术数据表、制造图纸和订单技术文件为准。
应用领域
应用领域
球形补偿器适用于需要角向转动、热位移转换或适应相对位移的管道系统。行业名称仅用于说明典型方向，实际适用性仍取决于介质、压力、温度、位移、材料和系统受力。
蒸汽与热水管道
球形补偿器用于城镇供热或热力管网的真实工业现场
电力与能源设施
球形补偿器用于蒸汽或热水热力管道的真实工业现场
石油化工装置
球形补偿器用于钢铁冶金或工业设备连接管路的真实工厂现场
钢铁与冶金管路
球形补偿器用于基础沉降或相对位移管段的真实现场
热力与供热管网：通过经过设计的偏置或组合布置处理热力管线的热伸长和方向变化。蒸汽与热水管道：适用于经介质、压力、温度和密封条件确认的热力管线。工业设备连接：用于设备与管道之间存在受控相对角向运动的位置。沉降与相对位移管段：可用于需要适应基础或相邻管段相对运动的连接位置。应用边界：特殊介质、高温或腐蚀工况应单独确认材料、密封、压力和温度条件。
安装使用
安装使用
安装重点是确认球心位置、管道中心线、连接方式、组合偏置和固定支撑关系与批准图纸一致。
核对规格、连接方式、安装方向和可用空间。
检查球面、密封区域、压紧结构和连接端是否完好。
按图纸确认球心位置、管道中心线和偏置关系。
不得通过强行偏转补偿器修正严重不同轴或连接错位。
吊装、焊接和现场施工时保护球面、密封及连接区域。
避免焊渣、砂粒、硬物或碰撞进入或损伤球面密封区域。
确认固定、支撑、密封状态、初始位置和允许运动空间。
系统试验前检查连接状态和球形接头运动是否符合项目文件。
安装边界：不得把球形补偿器作为承重支撑件，也不得超过厂家确认的允许转角；成对或多点组合方案不得在现场随意改变接头间距、偏置方向或连接关系。
质量控制
质量控制
质量控制应覆盖连接和结构尺寸、球面与密封区域、装配和动作状态以及成品包装。具体试验项目和验收标准按订单与质量计划确认。
尺寸与外观检查
中国工厂技术人员对球形补偿器进行尺寸和外观检查
性能试验
中国工厂检查球形补偿器球面、密封区域和动作状态
包装与出货检查
球形补偿器木箱或托盘出口包装与出货检查
尺寸与外观检查：核对连接尺寸、结构长度、装配状态和可见加工表面。球面与性能检查：检查球面、球座壳体、压紧结构和密封区域；动作、压力或密封试验是否执行以及验收参数按订单确认。包装与出货检查：保护球面、密封区域和连接端，降低装卸、运输和仓储过程中的机械损伤风险。
常见问题
常见问题
How does Spherical Expansion Joint compensate pipeline movement?⌄
Sleeve, rotary and spherical compensators absorb thermal movement through sliding, rotation or multi-directional turning structures, suitable for thermal, steam and long-distance pipelines.
How is the sealing structure confirmed?⌄
Seal material and structure should be confirmed by medium, temperature, pressure, movement frequency and maintenance conditions.
Does maintenance-free mean no inspection?⌄
Maintenance-free means reduced daily lubrication or frequent maintenance under design conditions, but connection, sealing and supports should still be inspected according to the project plan.
What site conditions should be confirmed before installation?⌄
Confirm pipeline route, compensation amount, anchors, guides, installation space, medium, temperature, pressure and welded/flanged connection requirements.
What information is needed for a quotation?⌄
Please provide DN/NPS, pressure class, working temperature, medium, connection type, movement, quantity and application position for Spherical Expansion Joint. Drawings or site photos help speed up confirmation.
Can this product be customized by project drawing?⌄
Yes. Spherical Expansion Joint can be confirmed according to drawings, operating conditions, flange standard, material, installation space and packing requirements. Final specifications follow the confirmed drawing and order.
What inspections are made before shipment?⌄
Typical checks include appearance, key dimensions, connection areas, sealing surfaces, welding or assembly quality and packing condition. Pressure, airtightness or material checks can be added when required by the order.
How are packing and export documents confirmed?⌄
Packing can be confirmed according to product size, weight, shipping method and destination requirements. Packing list, invoice and project documents follow the confirmed order.
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