Equipment oil leakage is a common typical problem in the machinery industry, especially the equipment used in the gearbox to increase the speed of the unit, it is necessary to seriously consider the use of waterproof sealant which is better, because oil leakage often occurs on the gearbox. Oil leakage of gearbox will not only cause a large amount of oil loss and huge maintenance costs, but also may lead to insufficient lubrication of the gearbox and eventually damage, seriously affecting the progress of the operation. The accumulation of leaked oil can also lead to safety accidents.
Therefore, in the work of wind power industry units, the sealing of the gearbox is a problem that must be paid great attention to. Today, based on the maintenance work of wind turbines that I am engaged in, I summarize the parts of the gearbox that are prone to oil leakage, and share with you which is the best waterproof sealant and the corresponding solution.
1. Which parts of the gearbox are prone to oil leakage? Why should you consider which waterproof sealant is better.
In the wind turbine that I am more familiar with, the gearbox can almost be called the "seepage" of the entire unit, with a large amount of oil and complex lubricating oil circuits, so the probability of leakage is also relatively high. In my past work, I often encountered the following locations:
1. High-speed shaft end cover: If the oil thrown up by the oil throwing pan can not be refluxed in time, or the sealing effect is relatively poor, there is a risk of leakage at the high-speed shaft end cover.
2. Oil circuit distributor and each pipe joint: the leakage at this position is relatively easy to judge, usually only once, often due to problems in the early operation, such as improper installation, failure to seal, etc.
3. Shell or shell bonding surface: generally due to the damage of the box itself or the sealing of the junction surface is not tight.
4. Electric heater, observation hole cover plate and other fitting surfaces: usually caused by improper installation or seal failure.
In addition to the above problems, there is also a high possibility of leakage at low-speed shaft end covers, oil pipes, large gear ring pin holes and other parts.
Leakage in these parts can be summarized as unreasonable design, insufficient manufacturing accuracy, and failure to follow the assembly process requirements when the equipment is installed. For a crew, redesigning or reinstalling a gearbox is a huge drain and probably delays in production. Choosing to use waterproof sealant to seal the leak is a more effective way to solve the problem immediately.
2. Which is the best gearbox waterproof sealant? What are the precautions?
The use of waterproof sealant to plug leaks can achieve obvious results in a short time. However, it is important to note that this method is also very dependent on the operator's level of application and the quality of the sealant itself. Here is an example of the experience of sealing the flange leakage of the gearbox shell, and I will share with you which kind of waterproof sealant is good, and the sizing steps and precautions:
1. Cleaning treatment: remove the residual colloid, paint, etc. on the contact surface, if it is difficult to clean, you can choose Loctite SF 7365 parts cleaner or Loctite SF 7063 cleaner for assistance.
2. Apply waterproof sealant: According to the product manual guidelines, apply Loctite 515 flat sealant to the contact surface.
3. Stable reassembly: the cover plate and the gearbox flange are aligned and then bonded to avoid the fracture of the plane sealant caused by displacement. Tighten all bolts diagonally.
4. Precise touch-up paint: repair paint on the paint stripping part of the bolt surface.
3. Which is the best waterproof sealant? Loctite reveals it for you!
You should have noticed that whether it is a leak-prone part or a specific solution to leakage, "waterproof sealant" is the key. A high-quality waterproof sealant can effectively solve the problem of leakage in the gearbox. So, which is the best waterproof sealant?
When choosing, it is advisable to choose a big brand like Henkel Loctite. Just like the leakage of the gearbox of a wind turbine I once experienced, Loctite's team of experts quickly arrived at the factory to conduct a professional and comprehensive investigation of the unit, and held a maintenance and solution seminar with the factory maintenance department, forming a corresponding maintenance guide, making the whole solution process faster, more accurate and more effective.
In a repair solution, Loctite selects the most suitable one or more products from a range of products and explains why we chose that product. As mentioned above, Loctite 515 Flat Sealant, which is a waterproof sealant for machined metal flange flat surfaces, is suitable for use in sizes up to 0The 25mm clearance allows for a perfect seal between parts. The use of it on the flange of the gearbox housing of the wind turbine effectively reduces leakage, reduces the probability of downtime, and can also save the plant a lot of costs.
Choosing a high-quality waterproof sealant can effectively solve the problem of leakage in the gearbox. Which is the best waterproof sealant? Choosing Loctite not only means choosing a high-quality waterproof sealant, but also adds a professional and efficient "foreign aid department". As a wind turbine maintenance practitioner, we believe that Loctite will continue to bring innovative and effective solutions to the field of industrial repair and maintenance, and bring better technologies and products to the development of the industry.