SLGD Series Vertical Multistage Centrifugal Pump

What are the cooling methods of SLGD series vertical multistage centrifugal pumps?

Internal circulation cooling method
Internal circulation cooling method is a cooling solution widely used by Jiangsu Double Wheel Pump Machinery Manufacturing Co., Ltd. SLGD series vertical multistage centrifugal pumps in various applications. This cooling method achieves heat dissipation of pump bearings and seals through the flow of liquid inside the pump. Specifically, when the liquid in the pump body flows through various components, it can effectively take away the heat generated by these components, thereby achieving efficient cooling. The significant advantage of internal circulation cooling is that it does not need to rely on external cooling equipment or media, which not only effectively reduces energy consumption, but also reduces the maintenance cost of equipment. Through the fine design of the internal flow channel and cooling channel of the pump body, Jiangsu Double Wheel Pump Machinery Manufacturing Co., Ltd. ensures that the flow rate and temperature change of the internal liquid are always kept within a safe range when the pump is running at high load.
In the internal cooling design of the SLGD series pumps, special attention is paid to the temperature control of key components such as the pump shaft, pump cover and bearing seat. The flow of fluid in the pump body can not only effectively take away heat, but also prevent premature wear of components caused by overheating, thereby extending the service life of the equipment. In addition, Jiangsu Double Wheel Pump Machinery Manufacturing Co., Ltd. introduced advanced sealing technology in the design, which significantly reduced the risk of liquid leakage inside the pump and further improved the stability of the cooling effect. The design of the internal circulation cooling method enables the SLGD series pumps to continue to work efficiently in high-temperature environments, especially suitable for industrial environments with strict requirements on the stability and durability of the pump.
External cooling method
For some special working conditions, especially when handling high-temperature media or the pump is running under high-load conditions for a long time, the internal circulation cooling may not fully meet the needs. In this case, the external cooling method is particularly important. The external cooling system usually includes a cooling water system, an air cooling system or a dedicated liquid cooling system. The external cooling method of the SLGD series vertical multistage centrifugal pump mainly relies on the cooling water system, which flows through the heat dissipation device outside the pump to help the pump body dissipate heat and ensure that each component will not be damaged due to overheating.
In the design of external cooling, Jiangsu Double Wheel Pump Machinery Manufacturing Co., Ltd. uses advanced heat exchange technology and precisely designs the cooling water flow channel to ensure the maximum cooling effect. The cooling water enters various parts of the pump through the cooling pipe of the pump, absorbs the heat generated by the pump body and the flow of liquid inside it, and takes it away. The temperature of the cooling water flowing out is low, ensuring the normal operation of the pump body under high load and high temperature environment.
In addition, under special circumstances, the SLGD series pump can also be assisted by installing an air cooler for cooling. The air cooling system removes the heat generated by the pump components through air flow, which is suitable for application scenarios where a large amount of cooling water source cannot be provided or the water source in the environment is limited. The air cooling system is simple and flexible in design, which can effectively reduce the dependence on external cooling equipment and reduce the complexity of the system.
Composite cooling method
In some extreme working conditions, a single cooling method is often difficult to meet the high standard requirements of pump performance. In response to this technical challenge, Jiangsu Double Wheel Pump Machinery Manufacturing Co., Ltd. has developed a composite cooling method that combines internal circulation cooling with external cooling to meet specific application requirements. This innovative cooling solution not only optimizes the heat dissipation performance of the pump, but also significantly improves the reliability and service life of the equipment.
The core of the composite cooling method is that it can give full play to the respective advantages of internal circulation cooling and external cooling. Internal circulation cooling quickly removes the heat generated by the pump body through the fluid circulation inside the pump, ensuring that the pump maintains a suitable temperature during operation. External cooling uses the external environment or a specially designed cooling medium to further enhance the heat dissipation effect. This dual cooling mechanism enables the pump to effectively prevent overheating when it is running at high load for a long time.
In practical applications, the composite cooling method is particularly suitable for pump systems that need to operate at high load for a long time. Such systems usually face more stringent working conditions and require the pump to have excellent durability and stability. By adopting the composite cooling method, Jiangsu Double Wheel Pump Machinery Manufacturing Co., Ltd. can ensure the excellent working condition of the equipment in various complex environments and meet the user's strict requirements for pump performance.
In addition, the composite cooling method also has good adaptability and can be adjusted according to different working environments and load conditions. Whether it is high temperature, high pressure, or in highly corrosive media, the composite cooling system of Jiangsu Double Wheel Pump Machinery Manufacturing Co., Ltd. can respond flexibly to ensure the stable operation of the pump. This high adaptability makes Jiangsu Double Wheel Pump Machinery Manufacturing Co., Ltd. more competitive in the market and able to meet the needs of a wide range of industries.

What are the specific types of mechanical seals for SLGD series vertical multistage centrifugal pumps?

Mechanical seals are a vital component of centrifugal pumps, and their main function is to effectively prevent liquid leakage in the pump. During the operation of the pump, the liquid flows in the pump body, and the mechanical seal prevents the liquid from escaping from the shaft seal by ensuring the sealing between the pump shaft and the pump body, thereby maintaining the stability of the system's pressure and flow. Especially for equipment such as the SLGD series vertical multistage centrifugal pumps that require long-term high-load operation, the reliability of the mechanical seal directly affects the pump's operating stability, failure rate and maintenance cost.
In the design of the SLGD series pumps, Jiangsu Double Wheel Pump Machinery Manufacturing Co., Ltd. uses a variety of types of mechanical seals according to different working conditions and medium characteristics to ensure that the pump can maintain excellent sealing performance under various working environments.
What are the types of mechanical seals for SLGD series vertical multistage centrifugal pumps?
Single-end mechanical seal
Single-end mechanical seal is the most common form of sealing, suitable for most standard working conditions, especially in working environments with low pressure and relatively stable temperature. The single-end mechanical seal of the SLGD series vertical multistage centrifugal pump has a simple structural design and stable performance, and is widely used in the transportation of clean water and slightly polluted liquids. Its sealing surface is composed of a pump shaft and a sealing ring. When the pump shaft rotates, the friction between the sealing ring and the shaft generates pressure, thereby effectively preventing liquid leakage.
In terms of material selection, Jiangsu Double Wheel Pump Machinery Manufacturing Co., Ltd. uses high-quality alloy materials and ceramic sealing surfaces to ensure the stability of sealing performance. In addition, the single-end mechanical seal can be combined with the lubrication and cooling system to reduce the temperature of the sealing surface through liquid circulation, reduce friction and wear, and thus extend the service life of the pump. Therefore, in the conventional application of the SLGD series pumps, the single-end mechanical seal is an important technical guarantee for achieving efficient operation.
Double mechanical seals
For working conditions that require high sealing performance and longer running time, Jiangsu Double Wheel Pump Machinery Manufacturing Co., Ltd. uses double mechanical seals in the SLGD series pumps. This seal consists of two sealing surfaces, one at each end of the pump shaft. Compared with single seals, double seals perform better in withstanding higher working pressures and temperatures, can effectively reduce liquid leakage, and show excellent performance in the transportation of high-viscosity or easily scaling liquids.
Double seals have the characteristics of self-balancing. The two sealing surfaces support each other through the balance ring, which significantly reduces the wear of the sealing components and reduces energy loss, thereby improving the operating stability of the pump. The double seals used by Jiangsu Double Wheel Pump Machinery Manufacturing Co., Ltd. in the SLGD series pumps can effectively deal with leakage problems under harsh working conditions and ensure long-term stable operation of the pump under high pressure and large flow conditions.
Hermetic seals
Hermetic seal technology (hermetic seal) is a specially designed sealing solution that is widely used in industry scenarios where liquid contamination and gas leakage need to be prevented, especially in the fields of chemical, pharmaceutical and food processing. Its core function is to ensure absolute isolation between the liquid and the external environment, thereby effectively maintaining the purity and safety of the product.
In the SLGD series pumps developed by Jiangsu Double Wheel Pump Machinery Manufacturing Co., Ltd., the use of hermetic sealing technology embodies advanced engineering design concepts. This technology forms a reliable isolation interface between the pump shaft and the sealing ring through gas pressure to ensure effective separation of the sealing surface. This design not only significantly reduces the risk of liquid leakage, but also prevents the intrusion of external gas, thereby maintaining the pressure in the pump stable. This feature enables the SLGD series pumps to maintain excellent performance under a variety of extreme working conditions.
Hermetic sealing technology is particularly suitable for high temperature, high pressure and volatile or corrosive liquid delivery applications. In these harsh environments, traditional sealing methods often fail to meet the requirements of safety and reliability, while hermetic sealing provides a superior solution. Through precise gas pressure control, hermetic sealing not only enhances the sealing effect, but also extends the service life of the equipment and reduces maintenance costs.