The price of grundfos pump seal wholesale in Guangzhou Lepu Seal Machinery Co., Ltd will always maximize customers' profitability. Our pricing involves capturing the value that customers place on this product, as opposed to the simple cost ourselves incurred to create and produce it. We deploy this strategy across a broader range of customers and markets in order to establish value-added supplier relationship, identify high-value customer segments and capture the maximum value of our product offering. Rest assured, the pricing of our product is favorable when considering all related values.

With years of experience and expertise in designing and manufacturing of Metal Bellows Seal 85N, Guangzhou Lepu Machinery CO., LTD has taken its place among manufacturers in the industry. burgmann mechanical seal is the main product of Lepu Seal Machinery. It is diverse in variety. The design of Lepu Seal cartridge mechanical seal is carried out around some fundamental considerations such as overall bag weight, overall shape and balance, type and configuration of zippers, etc. The product has stable machine performance. It always runs stably in the operation of start, brake speed adaptation, and open circuit losses. High density silicon for the seal face is adopted by Lepu.

We bear social responsibility. We create attempts in four priority areas of environment and resource security: reduction of energy demand, reduction of greenhouse gas emissions, reduction of freshwater consumption and material consumption.

Selection of mechanical seal structure type
　2017-08-18　　
Selection of mechanical seal structure type:
The selection of the mechanical seal structure type is an important step in the design process. When selecting the mechanical seal structure type, due to the diversity of the mechanical seal structure, it needs to be selected according to different purposes, specific use requirements and working conditions Appropriate structure type. In the preliminary selection, the following perspectives can be considered:
(1) Medium characteristics: concentration, viscosity, corrosiveness, presence or absence of solid particles and fiber impurities, whether it is easy to vaporize or crystallize, etc.;
(2) Working parameters: pressure and temperature of the sealed medium, shaft diameter and speed;
(3) The main engine (pump, kettle, process equipment, etc.) requirements for the allowable leakage volume and direction of the sealed medium, and the life and reliability requirements of the sealing device;
(4) The host's restriction on the structural size of the sealing device;
(5) Stability of operation and production process.
Flowserve RO-Bn mechanical seal 　　555.html,

The design sequence of mechanical seal 　　 mechanical seal selection-selection according to working parameters and shaft diameter

New Development of Modified Polytetrachloroethylene Mechanical Seal Materials
　2016-12-26　　
New development of modified polytetrachloroethylene mechanical seal materials. Polytetrachloroethylene (PTFE) has the advantages of good chemical stability, low friction coefficient, wide temperature range (-240~260T), no stickiness, no pollution, etc., making it another widely used sealing material material. However, as a sealing material, its large creep and poor resilience become the fatal injury of PTFE.
It used to be replaced by sandalwood instead of PTFE. This should be no problem in theory, but in fact, there are still problems such as difficult processing, surface buckling or damage to the coating layer, which causes media erosion. Therefore, it can only be changed The performance of PTFE can be improved by the method of sex or filling. For example, the expanded PTFE sealing tape introduced in the early years is one of the modified products. However, there are still two problems: First, due to process reasons, the filling material is difficult to disperse uniformly, resulting in temperature anisotropy and uneven points, which cannot reduce creep; second, it is difficult to make it due to traditional processing methods (molding and sintering) The large thin plate brings inconvenience to the gasket processing.
In recent years, Gore Company has introduced expanded polytetrachloroethylene sealing plate (丨.22mxl.42n〇, without any adhesive or filling material, and its compression performance (40%), high temperature resistance (315 degrees Celsius), Compared with pure tetrachloride, the creep relaxation rate is lower (32.8%/100°C*22h), and it is easy to cut and install, and the required gasket stress is small. 　　215.html,

Mechanical seal performance and structure are better. Which types of graphite gaskets have 　　 static sealing technology research progress of mechanical seal

The Science of Labyrinth Mechanical Seals: How Do They Work?

Introduction:

Mechanical seals are a critical component in many industrial applications, providing a secure and reliable solution for preventing leaks in pumps and rotating equipment. Among the various types of mechanical seals, labyrinth seals have gained significant popularity due to their exceptional performance and efficiency. In this article, we will explore the science behind labyrinth mechanical seals and delve into their inner workings. By understanding how these seals operate, engineers and industry professionals can make informed decisions about their implementation and ensure optimal performance in their applications.

The Basics of Mechanical Seals

Mechanical seals are devices that create a tight and secure seal between two components in a rotating system, such as a pump or compressor. They consist of stationary and rotating components, often made of materials like carbon, ceramic, or metal, which effectively prevent the leakage of fluids or gases. While there are various types of mechanical seals, labyrinth seals stand out as a reliable and efficient option for many industries.

What Sets Labyrinth Seals Apart?

Labyrinth seals derive their name from the intricate paths they feature within their design. Unlike other mechanical seals that rely on the compression of sealing surfaces to prevent leakage, labyrinth seals rely on a tortuous path system. The seal consists of a series of axial and radial channels, which create a barrier against the flow of fluids or gases. This unique design allows labyrinth seals to withstand high pressures and temperature differentials while maintaining low leakage rates.

The Working Principle of Labyrinth Seals

To understand how labyrinth seals work, it is crucial to comprehend the principle of fluid dynamics. When fluid or gas flows through a passage, it creates pressure differentials. In the case of labyrinth seals, the axial and radial channels create a tortuous path for the fluid to flow through. As the fluid passes through these channels, it encounters multiple changes in direction, resulting in a substantial pressure rise. This pressure difference effectively prevents leakage by keeping the fluid within the system.

A Look Inside the Labyrinth Seal

The inner geometry of labyrinth seals plays a crucial role in their effectiveness. The seal consists of alternating axial and radial grooves with specific dimensions, carefully calculated to optimize its performance. The axial grooves are designed to create resistance against fluid flow, which raises the pressure and forms a barrier. On the other hand, the radial grooves control fluid movement along the rotating member, further enhancing the seal's efficiency.

Factors Influencing Labyrinth Seal Performance

Several factors can impact the performance of labyrinth seals. One important consideration is the clearance between the stationary and rotating components. A smaller clearance provides better sealing but requires more energy to overcome the friction. The fluid properties, such as viscosity and density, also affect the seal's performance. Additionally, the surface roughness of the seal surfaces and the speed of rotation play a significant role in determining the efficiency and longevity of the labyrinth seal.

Conclusion:

Labyrinth seals are a remarkable example of engineering ingenuity, offering an efficient and reliable solution for preventing leaks in rotating systems. By understanding the science behind these seals and their inner workings, engineers can optimize their design and application. Labyrinth seals have proven their worth in various industries, including oil and gas, chemical processing, and power generation. With their ability to withstand high pressures and temperature differentials while maintaining low leakage rates, labyrinth seals continue to be a trusted choice for sealing applications in the modern industrial landscape.

Tungsten Carbide Seal Rings in Turbo Machinery: Applications and Benefits

Introduction

Turbo machinery is widely used in various industries, including power generation, oil and gas production, and chemical processing. One crucial component of turbo machinery is the seal ring, which prevents the leakage of fluids between rotating and stationary parts. Tungsten carbide seal rings have gained popularity for their exceptional properties and numerous applications in turbo machinery. This article explores the various applications and benefits of using tungsten carbide seal rings in turbo machinery.

I. Understanding Tungsten Carbide

Tungsten carbide is a compound composed of tungsten and carbon atoms. It is renowned for its exceptional hardness, wear resistance, fracture toughness, and thermal stability. These properties make tungsten carbide an ideal material for seal rings in turbo machinery, where it needs to withstand extreme operating conditions.

II. Applications in Steam Turbines

One of the primary applications of tungsten carbide seal rings is in steam turbines. Steam turbines play a vital role in power generation, utilizing steam to rotate the turbine blades and generate electricity. Tungsten carbide seal rings are used in various locations within a steam turbine, including the high-pressure and low-pressure sections. These seal rings provide excellent leakage control and wear resistance, ensuring the optimal efficiency of the turbine.

III. Benefits in Centrifugal Compressors

Centrifugal compressors are widely employed in industries for compressing gases. They can handle large volumes of gas and provide higher efficiency compared to other compressor types. Tungsten carbide seal rings in centrifugal compressors offer superior resistance to corrosion and wear, providing extended service life. They ensure the reliable operation of the compressor by minimizing leakage and reducing the risk of contaminant ingress into the gas stream.

IV. Implications in Turboexpanders

Turboexpanders are used in various processes, such as natural gas processing and cryogenic refrigeration systems. These machines convert high-pressure gas into mechanical energy, recovering the energy stored in the gas. Tungsten carbide seal rings find applications in turboexpanders due to their exceptional toughness and resistance to thermal shocks. These seal rings maintain the necessary gas integrity and prevent unwanted gas leakage during the expansion process.

V. Refinery Applications

In the oil and gas industry, refineries play a crucial role in processing crude oil into valuable products. Turbo machinery, such as centrifugal pumps and compressors, are extensively employed in refinery operations. Tungsten carbide seal rings offer excellent resistance to abrasive fluids, acids, and harsh chemicals typically encountered in refinery processes. The superior durability of these seal rings helps minimize downtime and maintenance costs, ensuring smooth refinery operations.

VI. Other Industrial Applications

Apart from the above-mentioned applications, tungsten carbide seal rings have found uses in various other industrial sectors. They are widely employed in chemical processing plants, wastewater treatment facilities, and pharmaceutical manufacturing. These seal rings provide reliable sealing in challenging environments and help minimize fluid leakage, ensuring safe and efficient operation of industrial equipment.

Conclusion

Tungsten carbide seal rings offer numerous advantages in turbo machinery applications. Their exceptional hardness, wear resistance, and thermal stability make them highly desirable for maintaining sealing integrity in demanding operating conditions. Whether it is steam turbines, centrifugal compressors, turboexpanders, or various industrial applications, tungsten carbide seal rings are the preferred choice for ensuring efficient and reliable performance. With continuous research and development, these seal rings are expected to further improve, meeting the evolving needs of the turbo machinery industry.