一、项目内容：

   Ф114—Ф820钢管3PE防腐生产线

二、设计依据：

钢管直径：Ф114—Ф820

钢管长度：8000㎜-12000㎜

工艺速度：1200㎜/min—3000㎜/min

三、管道传送架

根据用户要求，我公司Ф114—Ф820管道防腐生产线设计为以单轮为动力单元的传送线，这样使管道运行速度更加平稳并方便了大小管螺距的调整。传送架底座采用国标18＃槽钢、18＃方钢和 12㎜厚钢板焊接。此生产线传送架的规格为1600㎜×5000㎜×12个（每个架装三组轮胎）。1600㎜×800㎜×5个，（其中一个装高温轮，一个加装动力）。传送轮型号为600-9加重充气轮胎（比实心轮变形能力强，管道运行平稳），动力采用变频控制。传动轮底座用4个螺钉固定在孔间距一致的调节轨道上，方便大小管间距的调节；角度调节采用丝杠调节，提高了管道传送精度减少了劳动强度。             

四、除锈机：

本机是在引进美国、意大利的先进技术的基础上，采用现代计算机模拟技术，研制开发的一种新型钢管外壁抛丸清理设备，可去除钢管表面的锈和氧化皮，完全达到钢管外壁涂履前的清理要求，可满足小、中型工程钢管外壁清理需要。它具有以下优点：

1、采用大抛丸量、高抛射速度的国际上第五代悬臂离心式抛丸器，显著地提高了清理效率，获得满意的清理质量，属专利产品。

2、该设备是根据国内外先进技术重新设计而研制成功的，具有生产率高、操作方便、体积小的特点，属国内首创。

五、中频电源加热：

此生产线配置500KW（用户自备）和1000KW共二台中频加热设备。

1000kw参数：

500kw参数：

六、喷粉系统：

1、8枪控制中心。       DK型        1套                                

以上装置含自动喷枪8支，喷枪为内置高压，控制柜控制8支自动喷枪的电压、电流及气路系统。并控制8支文丘里供粉泵供粉系统。

以上装置含流化床供粉系统1套,流化床外形尺寸:(L×W×H)800×775×570(mm)含8支文丘里供粉泵。

七、挤塑机

此生产线须配置SJF180/30一台、SJF65/28一台防腐专用挤出机。

八、水冷却室：

  采用塑钢封闭，美观大方，便于观察。全部做成活动窗，方便进入。水泵采用流量为每小时100立方二台（一台备用）。冷却水管调节阀门装在操作柜一侧，便于调节。

九、 空压机及拨管机构：

本生产线配备一台6立方螺杆式空压机，一台6立方空气干燥机，1立方储气罐一台供喷粉设备用，但气量有富余，所以把拨管系统的油缸改为气缸，节省了液压站及液压油的投资和每年换液压油的费用。维修也干净、方便。共需要8个拨叉及气缸，2个举升机气缸。

十、 破口机、举升机和二次除锈机：

  破口机采用钢丝轮破口机，本套装置安装行走轮可移动工作。而且装有粉尘回收装置有效解决环保问题。

   举升机采用气缸升降，传动轮采用双轮举升两端动力传动的方式，保证了厚壁管的加工需要。

   二次除锈采用钢丝轮除锈及压缩空气吹扫，保证钢管外壁清洁度达到要求，提高环氧粉末的附着力。

十一、 放管平台

       上管、下管、过渡平台均采用18#国标工字钢焊接，保证了平台的坚固性。三个平台总长30米。

十二、  制造及安装工期

  制作工期为合同生效之日起40天制作完毕，安装工期20天（安装条件具备）。

3PE anti-corrosion pipeline production line Ф114—Ф820 steel pipe

1, the project content:

Ф114—Ф820 steel pipe 3PE anti-corrosion production line

2, the design basis:

Steel pipe diameter: Ф114—Ф820

Steel pipe length: 8000mm-12000mm

Process speed: 1200mm/min-3000mm/min

3, the pipeline conveyor

According to the user's requirements, our company's 114-Ф820 pipeline anti-corrosion production line is designed as a transmission line with a single wheel as the power unit, which makes the pipeline running speed more stable and facilitates the adjustment of the large and small pipe pitch. The base of the conveyor is welded by national standard 18# channel steel, 18# square steel and 12mm thick steel plate. The specifications of this line conveyor are 1600mm × 5000mm × 12 (three sets of tires per rack). 1600mm × 800mm × 5, (one of which is equipped with a high temperature wheel and one is equipped with power). The transmission wheel model is a 600-9 weighted pneumatic tire (stronger than the solid wheel, the pipeline runs smoothly), and the power is controlled by frequency conversion. The base of the transmission wheel is fixed on the adjusting rail with the same hole spacing by 4 screws to facilitate the adjustment of the size of the pipe. The angle adjustment adopts the screw adjustment, which improves the pipeline transmission precision and reduces the labor intensity.

4, the descaling machine:

This machine is based on the introduction of advanced technology from the United States and Italy, using a modern computer simulation technology, developed a new type of steel pipe outer wall shot blasting equipment, which can remove the rust and scale on the surface of the steel pipe, completely before the outer wall of the steel pipe is painted. The cleaning requirements can meet the needs of cleaning the outer wall of small and medium-sized engineering steel pipes. It has the following advantages:

1. The fifth-generation cantilever centrifugal blasting machine with large shot blasting and high throwing speed has significantly improved the cleaning efficiency and obtained satisfactory cleaning quality. It is a patented product.

2. The equipment has been successfully developed according to the redesign of advanced technology at home and abroad. It has the characteristics of high productivity, convenient operation and small volume, and is the first in China.

5, medium frequency power supply heating:

This production line is equipped with 500KW (user-supplied) and 1000KW two IF heating equipment.

1000kw parameters:

500kw parameters:

6, dusting system:

 8 gun control center. DK type 1 set

The above device contains 8 automatic spray guns, the spray gun is built-in high pressure, and the control cabinet controls the voltage, current and pneumatic system of 8 automatic spray guns. And control 8 venturi powder pump powder supply system.

The above device comprises a set of fluidized bed powder supply system. The size of the fluidized bed: (L×W×H) 800×775×570 (mm) contains 8 venturi powder pumps.

7, extrusion machine

This production line must be equipped with one SJF180/30 and one SJF65/28 anti-corrosion extruder.

8, water cooling room:

It is closed with plastic steel and is beautiful and easy to observe. All are made into a movable window for easy access. The pump uses a flow rate of 100 cubic meters per hour (one standby). The cooling water pipe regulating valve is installed on the side of the operation cabinet for easy adjustment.

9, air compressor and pipe mechanism:

The production line is equipped with a 6-cubic screw air compressor, a 6-cubic air dryer, and a 1-cubic gas storage tank for the powder spraying equipment. However, the gas volume is sufficient, so the cylinder of the pipe-cutting system is changed to a cylinder. It saves the investment in hydraulic stations and hydraulic oil and the cost of changing hydraulic oil every year. Maintenance is also clean and convenient. A total of 8 forks and cylinders and 2 lift cylinders are required.

10, breaking machine, lift and secondary descaling machine:

The breaking machine adopts a wire wheel breaking machine, and the set device is equipped with a walking wheel to be movable. Moreover, the dust recovery device is equipped to effectively solve environmental problems.

The lift adopts the cylinder lifting, and the transmission wheel adopts the double-wheel lifting power transmission at both ends to ensure the processing needs of the thick-walled pipe.

The secondary descaling adopts the wire wheel derusting and compressed air purging to ensure the cleanliness of the outer wall of the steel pipe meets the requirements and improve the adhesion of the epoxy powder.

11. Pipeline platform

The upper tube, the lower tube and the transition platform are all welded with 18# GB-shaped I-beam, which ensures the robustness of the platform. The three platforms have a total length of 30 meters.

12, manufacturing and installation schedule

The production period is 40 days from the effective date of the contract, and the installation period is 20 days (the installation conditions are available).