行业组件数据 · 2026

热电偶套管主体

A protective cylindrical housing that shields temperature sensors from harsh process conditions while allowing accurate temperature measurement.

技术定义与适配语境
典型 热电偶套管主体 会按材料、尺寸公差、适配关系和失效风险在 化学制造 中评估。

The thermowell body is a precision-engineered cylindrical component designed to isolate temperature sensors (thermocouples, RTDs, resistance thermometers) from direct contact with process media. It provides mechanical protection against flow-induced vibration, corrosion, erosion, and high pressure while maintaining thermal conductivity for accurate temperature readings. The body features standardized mounting threads or flanges for installation into process vessels, pipelines, or reactors.

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组件规格

定义
The thermowell body is a precision-engineered cylindrical component designed to isolate temperature sensors (thermocouples, RTDs, resistance thermometers) from direct contact with process media. It provides mechanical protection against flow-induced vibration, corrosion, erosion, and high pressure while maintaining thermal conductivity for accurate temperature readings. The body features standardized mounting threads or flanges for installation into process vessels, pipelines, or reactors.
工作原理
The thermowell body operates on thermal conduction principles. It transfers heat from the process fluid through its wall to the temperature sensor inserted inside, while creating a sealed barrier that prevents media contamination. The design minimizes thermal lag through optimized wall thickness and material selection, ensuring the sensor reaches equilibrium temperature quickly. Pressure ratings and vibration resistance are achieved through mechanical engineering of the cylindrical structure.
材料
Stainless steel (316/316L304)Hastelloy C-276Inconel 600/625Monel 400Titanium Grade 2Carbon steel with protective coatings. Material selection depends on process temperature (-200°C to 1000°C)pressure (up to 10000 psi)and corrosion requirements.
Taper Design
Straight, tapered, or stepped profiles
Bore Diameter
6-12 mm for standard sensors
Surface Finish
Ra ≤ 3.2 μm for hygienic applications
Connection Type
Threaded (NPT, BSP, Metric), Flanged (ANSI, DIN, JIS), Weld-in
Pressure Rating
ASME B31.3 compliant, typically 150-2500 psi
Insertion Length
50-1000 mm standard
Temperature Range
-200°C to 1000°C
标准
ISO 2858ASME B40.9DIN 43772IEC 60751

行业分类与别名

热电偶套管主体 的常用贸易名称、技术标识和检索关键词。

thermowell bodytemperature sensor protectionprocess instrumentationindustrial thermowellthermowell specificationsASME B40.9chemical manufacturing热电偶套管主体Thermowell Body化学制造 热电偶套管主体

上级产品

该组件会出现在以下整机或工业产品中。

热电偶套管组件
用于高压化学反应器中容纳温度传感器的保护性组件
查看产品详情 ->

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Material incompatibility with process chemicals->Corrosion leading to wall penetration and process leakage->Conduct thorough material compatibility analysis and select corrosion-resistant alloys
Excessive flow velocity causing vortex shedding->Vibration-induced fatigue failure at the connection point->Implement tapered designs, calculate natural frequency, and follow ASME B31.3 installation guidelines
Thermal cycling beyond design limits->Thermal stress cracking and measurement inaccuracy->Select materials with appropriate thermal expansion coefficients and design for expected temperature ranges

工业生态与工程逻辑

兼容对象
Chemical reactorsDistillation columnsHeat exchangersPipeline systemsStorage tanks
可替换件
WIKAAshcroftEmerson/RosemountEndress+HauserYokogawa
0
Material corrosion in aggressive chemicals
1
Vibration-induced fatigue failure
2
Thermal stress cracking
3
Improper installation causing leakage
4
Inadequate pressure rating selection

合规与检测

tolerance
±0.5 mm on bore diameter, ±1° on thread pitch, surface roughness Ra ≤ 3.2 μm for clean-in-place applications
test method
Hydrostatic pressure testing per ASME BPVC Section VIII, material certification per ASTM standards, dimensional verification with calibrated instruments

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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。

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常见问题

What is the main purpose of a thermowell body?

To protect temperature sensors from direct exposure to process media while allowing accurate temperature measurement through thermal conduction.

How do I select the right thermowell material?

Consider process temperature, pressure, chemical compatibility, erosion potential, and required thermal response time. Common materials include 316 stainless steel for general use and exotic alloys for corrosive environments.

What standards govern thermowell design?

ASME B40.9 for pressure ratings, ISO 2858 for dimensions, and various material standards (ASTM, DIN) depending on the application.

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