An engineering friend of mine once told me that the only way to ensure that concrete never breaks is to never pour concrete. He also told me that if I never want to maintain a door, don’t put it in. These seem to be common and sometimes even humorous considerations, but in reality, they are teaching us all the lessons about engineering, planning and design work. If you don’t need to do something, don’t do it. Yes, this concept is very basic, but it is often lost in daily work.
One of the many basic principles of sand transportation is that as the distance of product transportation increases, the product speed usually increases. In order to make more sand go further indefinitely, people usually think it is easy to just increase the pressure and allow compressed air to do all the work.
But what can actually be done by increasing the pressure and flow in the pneumatic conveying pipeline? In many cases, the work done due to the increase in compressed air is transformed into wear at the bend of the conveying pipe and degradation of the conveyed material. It is not a job that people want and cannot be identified immediately. Therefore, there is no need to make further corrections initially before unforeseen problems are exposed.
Another basic principle to consider is pipe wiring. If the pipe is leaning against the wall, it is usually easier for the installer to see the pipe wiring, thereby reducing the length of support required and reducing the work that the installer must provide to complete the pipe hanging task.
However, hanging the pipe tightly against the wall time and time again resulted in additional bends at the end of the pipe before the pipe reached the delivery line to the discharge fitting connected to the day storage tank.
For most companies that provide pipe installation services, when these companies install pipes for liquid or air, there is no need to consider adding elbows, because with the appropriate fittings installed, the operation of the entire system may not be significantly different. . However, the moving sand is slightly different. The extra bend at the end of the pipe will reduce the transportation speed, increase the pipe resistance, and provide a point for the wear of the pipe when the product is transported at the fastest speed.
It should also be considered that additional pipe elbows and accompanying wear must be performed on the conveyed product. It is not only the cost of the product, but also the specification that the product must meet when it is provided to and submitted to the customer. The costly finding is that the characteristics of these purchases have been altered by conveying the product in a more torturous way, which may be due to increased use of compressed air or possible avoidance of the final conveying line bending.
In a new facility without obstacles, the sky is the limit when laying the pipeline path. The basic knowledge of pneumatic pipe layout can be easily applied and followed. However, these basic principles are often lost in older facilities, where tangled pipes, dust collection and wiring make the task of determining the path of the pipe difficult.
Our experience tells us that frequent deviations from the basic principles of pipeline layout can cause problems after a period of time. In these cases, the problem is usually solved at a higher cost some time after installation and commissioning.
With years of experience and past work experience, we often review past installations and can remember numerous installations. When designing and installing, the customer decides based on the current cost and schedule instead of moving a piece of equipment or creating more Good pipeline route, they think it is acceptable to add elbows at the end of the new pipeline.
Customers truly believe that they can solve any future maintenance problems, because maintenance costs are usually determined to have been included in the indirect costs of company operations. They essentially think that the final accessory is a calculated consumable, which customers think is acceptable.
None of these ideas are completely wrong. Many customers are willing to accept this calculated consumable accessories, because for them, the initial cost is an acceptable “purpose”. A few years later, our historical experience brought us back to the same customer’s factory, when the company no longer accepted the replacement of the consumables specified by the customer. At this point, customers are faced with the trouble of rearranging pipelines, moving machinery or purchasing special accessories. Usually at a lower total cost and the resulting increase in conveying speed, it is easy to easily complete the repositioning of the conveying line during the initial installation.
Of course, the goal of this article is not to undermine the customer’s decision, because the customer knows best how each company operates. In turn, this article reminds you that sometimes the final fitting is not added to “finish” the attempt. This is a complication of the project. It only requires another observation to come up with the definition of the problem when we return to the basics and apply to simple solutions. .
Post time: Feb-22-2021