| 产品名称 | 管束 | 材料 | 碳钢，不锈钢，合金钢，铜合金 |
|---|---|---|---|
| 尺寸 | As Buyer’s Drawing Requirements | 申请： | Tubular Heat Exchanger， Chemical Production ，Petroleum Industry， Energy Power， Pharmaceutical |
| 强光 | Heat Exchanger Stainless Steel Tube Bundle， TP316L Stainless Steel Tube Bundle， Heat Exchanger Parts ASME SA213 | ||
ASME SA213 TP316L Stainless Steel Tube Bundle Heat Exchanger Parts
Heat exchanger tube bundle manufacturing process:
1. Material preparation: Select the right material for production. Commonly used tube bundle materials are stainless steel， copper alloy， etc.， according to the working conditions and fluid properties to choose the appropriate material.
2. Processing tube bundle: According to the design requirements， the pipe will be cut into the required size of the pipe segment. Use welding
The pipe sections are connected into bundles by means of extension， etc.
Foot tube east welding: all parts of the tube bundle are welded. Ensure the quality of welding. 煋 The welding process shall be carried out in accordance with the corresponding welding process specifications to ensure the depth and width of the weld.
4. Cleaning treatment: The welded tube bundle is cleaned to remove welding slag and other impurities generated during the welding process. At the same time， it is also necessary to prevent corrosion and dust inside the tube bundle.
5. Testing and inspection: non-destructive testing of the bundle to ensure that the quality of the bundle meets the requirements.
Commonly used detection methods include X-ray， ultrasonic and so on.
6. Surface treatment: anti-corrosion treatment of the outer surface of the tube bundle. Common treatment methods are spraying anti-corrosion paint， galvanized and so on.
7. Packaging and transportation: packaging and transportation of the completed tube bundle to prevent it from being transported
Damaged.
Heat exchanger tube bundle installation process:
1. Preparation before installation: Check the heat exchanger tube bundle and related equipment to ensure that there is no damage or loosening. Prepare required tools and installation materials.
2. Installation positioning: According to the design requirements and actual construction situation， determine the installation of heat exchanger tubes
Location and direction. Ensure installation accuracy by measuring and marking.
3. Installation sample: Install the support frame and support device on the installation position of the heat exchanger tube bundle to ensure the stability and balance of the tube bundle.
4. Connect the pipeline: according to the design requirements， connect the import and export pipeline and the corresponding valve. Select suitable connection methods， such as welding， threading， etc.
5. Tube bundle installation: Locate the made tube bundle to the support frame and pay attention to maintaining the level of the tube bundle
And perpendicularity. Secure the tube bundle to the support frame using appropriate tools.
6. Pipeline connection: According to the design requirements， the pipeline is connected to ensure that the connection is tight and sealed. The pipe connection is secured by tightening the bolts.
7. Inspection test: After installation， check and test the heat exchanger tube bundle. Check whether there is loosening or leakage phenomenon， test the bearing capacity and corrosion resistance of the tube bundle.
8. Protective measures: After the installation is completed， the heat exchanger tube bundle is protected. The pipe insulation， heat preservation， installation of protection， etc.， to protect the tube bundle from the influence of the external environment.
我们进行的部分质量检测包括
| 腐蚀测试 | 仅在客户特别要求时进行 |
| 化学分析 | 按照规定的质量标准进行测试 |
| 破坏性/机械测试 | 拉伸 | 硬度 | 压平 | 扩口 | 法兰 |
| 反向弯曲和反向平面测试 | 完全符合相关标准和 ASTM A-450 和 A-530 规范，可确保无故障膨胀、焊接和客户端使用 |
| 涡流测试 | 利用数字瑕疵标记检测系统检测地下的均匀性 |
| 水压试验 | 100% 静水压力测试根据 ASTM-A 450 标准进行，用于检查管子的泄漏情况，我们可支持的最大压力为 20Mpa/7s。 |
| 空气压力测试 | 检查是否有漏气迹象 |
| 目视检查 | 经过钝化处理后，每根管材都要由经过培训的员工进行彻底的目视检查，以发现表面缺陷和其他瑕疵。 |
U-tube heat exchanger
A kind of shell and tube heat exchanger， which belongs to petrochemical equipment， is composed of main components such as tube box， shell and tube bundle， and is named because its heat exchange tube is U-shaped. U-shaped tube heat exchanger has only one tube plate， and both ends of the pipe are fixed on the same tube plate.
The characteristic of this kind of heat exchanger is that the tube bundle can be freely telescoped， and the thermal stress will not be caused by the temperature difference between the tube and the shell， and the thermal compensation performance is good; The pipe length is double， the flow rate is long， the flow rate is high， the heat transfer performance is good; Strong bearing capacity; The tube bundle can be drawn from the shell， easy to repair and clean， and the structure is simple and the cost is cheap. However， the tube cleaning is inconvenient， the tube in the middle part of the tube bundle is difficult to replace， and because the bending radius of the innermost tube can not be too small， the distribution tube in the center of the tube plate is not compact， so the number of tubes can not be too much， and there is a gap in the center part of the tube bundle， so that the shell flow is easy to short circuit and affect the shell heat transfer. In addition， in order to compensate for the thinning of the pipe wall after bending， the straight pipe part needs to use a pipe with a thicker wall. This affects its use， only suitable for the shell wall temperature difference is large， or the shell medium easy to scale and the pipe medium clean and not easy to scale， high temperature， high pressure， corrosive situation.
