boiler feed water pump mechanical seal factory

These are usually used in some standard pumps and industries like grundfous pump, textile industries, boiler feed pumps. These seals have some special design and arrangement that fits to particular pump and application to reduce cost, space and time.

Mechanical seal designed is a unique seal developed to meet stringent technical requirements of Boiler feed water pumps. Rotating stationary ring design makes it suitable for high speed application & avoids critical requirement of stuffing box face squareness. Both the faces are having strong positive drive & locking arrangement which make seal very strong and sturdy. Thermodynamic circulation grooves inscribed on the rotating faces boost the cooling of the sliding faces by reducing the coefficient of friction and protecting the seal against thermal over loading. Increased coolant flow effected by the pumping screw & the fluid guiding channel combine to force the cold water into the gap between dynamic ring & stationary ring, blowing out gas bubbles and dirt particles & picking up frictional heat. In view of risk dynamic distortion because of high sliding velocity of over 25 m/sec the springs are located in the stationary part.

We recognize and understand the vital role of boiler feed water pump mechanical seal in their application. With purposes including securely fastening components within systems, and contaminants prevention such as gases and liquids from navigating through enclosed and sealed areas. That is why we offer wholesale boiler feed water pump mechanical seal in different variations and diversities to ensure the integrity and efficiency of systems they will be applied to will function successfully and optimally. The different seals" types available include static that does not move along with other seals and dynamic seals that move collaboratively.

Depending on the industry and selected purpose, we consider boiler feed water pump mechanical seal requirements. Requirements are like pressure, that is pressure changes, to ensure they can withstand and do not deform by the sealed fluid, the load and how it can withstand deflection, dynamics such as the alignment and vibration, and temperature covering the environmental conditions and the heating arising from the friction of the seal operation and fluid movement.

The seals are either bolts, nuts, or washers. Seal bots are commonly used because of their benefits in being reusable, preventing fluids and contaminants from escaping even under high pressure. Nuts are essential on temperature withstanding and compatibility with screws, studs, and bolts, in addition to, easy installation. Moreover, washers can withstand high pressures and are compatible with other seals.

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Since 2007, the hot-filament Chemical Vapor Deposition (CVD) technology for crystalline diamond thin-film coatings has found its way into the mechanical seal market to combat the problems of dry running, corrosion and abrasion. This new technology has proved successful in hundreds of pumping applications in a wide range of services and duties. The reliability and lifetime of mechanical seals are improved by using diamond-coated faces. One such application involved the sealing of large boiler feed and steam generator pumps in power plants. The duty conditions for the pump’s seals can be as high as pressures up to 580 psig (40 bar), shaft RPMs up to 6,500 and temperatures up to 400˚F (200˚C). Consequently, the mechanical seal faces are highly loaded in a fluid with far less than ideal lubricating qualities. It is evident, therefore, that these applications are technologically challenging for mechanical seal manufacturers not only from a tribological perspective, but also from a corrosion viewpoint when the feed water has a low electrical conductivity or is free of impurities. This paper discusses a new seal-face treatment using hotfilament CVD manufacturing technology tested in a lab for 16,000 hours and currently used in feed pump operations in several power stations in the USA and Europe.

The Pumps & Systems editorial staff receives many reader requests for articles on pump fundamentals. What follows is a series of answers to questions about boiler feedwater pump basics, why these pumps are important and more.

John Morton: Industrial power generation is important, and demand is growing. And at the heart of any power station’s pre-boiler system is the boiler feed pump. Most of these pumps are between-bearings, multistage centrifugal designs with mechanical seals installed at each end of the pump.

Boiler feedwater pumps are used to increase the discharge pressure of the feedwater to the boiler. Boiler feed pumps serve to feed a steam generator such as a boiler or a nuclear reactor with a quantity of feedwater that corresponds to the quantity of steam emitted. To deliver the feedwater into the boiler steam drum, the boiler feed pump has to raise the pressure beyond the boiler steam drum pressure.

JM: Boiler feed pumps are critical assets to steam plants, and keeping them up and running is paramount to plant operations. These pumps must be reliable—rugged—to withstand continuous high pressure pumping operation and be suitable to cope with additional variable conditions. For example, the changing of water quality during operations has the potential to impact pump performance, especially if using a cooler on the pump.

JM: The typical solution to keep boiler feedwater pumps running is using an American Petroleum Institute (API) piping Plan 23 and cooling the water in the vicinity of the seal to provide a lubricating medium. API Plan 23—the traditional method—relies on a cooling circuit to keep an area of the pump and the water in that area cool to prevent vaporization at the seal faces. This is done by circulating a quasi-closed loop of process water from the seal to a heat exchanger, then back to the seal. API Plan 23 is the most energy efficient and reliable method of sealing boiler feedwater.

JM: As with every method when it comes to maintaining proper sealing temperature, there can be an array of issues that present themselves and must be taken into account.

Safety: The pressure of boiler feedwater is very high. When cracking any vent valves, a jet of water and vapor can be released causing a safety hazard if not addressed with proper engineering controls and operator training. Boiler feedwater can also be at dangerously high temperatures, and releasing a stream of hot water or steam into the plant itself can seriously injure those personnel in proximity. Steam burns present unique risks to plant workers since steam can be invisible, and steam burns release much more heat into skin due to the release of latent heat.

Reliability: Operating a conventional mechanical seal on air for even a few seconds can shorten the life of the seal or cause complete seal failure. Too much venting has the ability to draw hot process water past the throat bushing and into the Plan 23 loop, causing an increase of temperature of the water at the seal and O-rings.

Environment: It is a poor practice to discharge any process fluids to the environment even if the fluid is water. Stray moisture can enter bearing housings or electric motors. Water can also cause instrument or structural components to rust.

JM:An API piping Plan 11 may also be employed. This solution eliminates the need for separate cooling and relies solely on a recirculation line from a higher pressure zone in the pump back to the stuffing box. This line provides flow to remove heat generated by the seal and also ensures the ambient temperature levels are maintained. This is usually only used in low duty boiler feedwater applications and would typically be in concert with a higher leakage seal.

JM: For a plant that is upgrading from packing or older seal technology, the cost of an API piping Plan 23 system may seem excessive. However, this solution has proven countless times to be the lowest life cycle cost while also capitalizing on reliability, safety and environmental factors.

1. Different models of mechanicals seals for a wide variety of Grundfos® pumps, among them: CR(N), NB, NK, CLM, LP, TP, etc. Available in diverse combinations of materials and different diameters: 12, 16, 22, 28, 33, etc. Also mechanical seals for Sarlin®. Division of waster pumps. Available in various materials: silicon-graphite carbide, silicon carbide-silicon carbide; combined with EPDM and FKM elastomers.

2. Mechanical seals are available for different references Gorman-Rupp® pumps. Special models for the transfer of clean water, sewage, oil industry, agriculture and others.

3. Mechanical seals for Fristam® pumps. Wide range of models and materials in the most standard diameters: 22,30 and 35 mm. Different assembly possibilities for the most well-known pump models: FP, FL and FT.

4. Broad range of mechanical seals compatible with Flygt® and Grindex® waste water pumps. These mechanical seals are characterized by their easy and fast installation, without having to make any modification to the pump. Manufactured in stainless steel and in solid tungsten carbide. Special tools are not necessary for their installation.

6. Different designs of mechanical seals for Ebara® pumps, single and double seals in combinations carbide-silicon carbide and graphite-aluminium oxide.

7. Mechanical seals for all types of Calpeda® pumps: centrifugal pumps, multistage, submersible. Different models of mechanical seals in a wide range of materials.

8. Mechanical seals compatible for APV® pumps, among them: Puma, ZMA, ZMB, ZMD, ZMS, ZMH, ZMK. Rosista® and Pasilac®, W and W+. Some designs with wave spring like the special seals for APV Howard® pumps and Crepaco Clean Line®. All of them have been manufactured in materials suitable for working with fluids such as juices, milk and drinks in general.

10. Different models of mechanical seals compatible for Alfa-Laval® pumps series CM, FM, MR, LKH,GM and ALC. Also the models for the range of lobular SSP and SR pumps. Mechanical seals in different combination of materials tungsten carbide, silicon carbide, graphite; combined with different types of elastomers: NBR, EPDM and FKM.

11. Mechanical seals for ABS® submergible pumps specific wastewater treatment. Different models of mechanical seal available: oil chamber mechanical seal and water mechanical seal.

The boiler feed pump is a multistage centrifugal pump used to increase the discharge pressure of the feed water to the boiler. To deliver the feed water into the boiler steam drum, it has to raise the pressure beyond the boiler steam drum pressure. Because of the high pressure and temperature involved, boiler feed water pumps are made up of cast steel casings and shafts along with an impeller made up of stainless steel.

To achieve this condition, the multistage centrifugal pumps are used where the discharge of the first stage becomes the suction of the second stage. Such pumps are provided with the diffuser rings around each impeller that serve to increase discharge pressure. This type of pump is thus often referred as a “turbine pump.”

The shaft is protected in the way of bearings by stainless steel sleeves, where we normally use a mechanical seal to the high pressure for liquid handling. So we provide a separate lubricating arrangement. The oil within the seal chamber is maintained constantly one bar above the discharge pressure by an accumulator containing a plunger which is operated by air or nitrogen pressure.

It is preferable on a vertical pump to have shaft sealing at the pump upper end only. Mechanical seals are spring loaded to hold the sealing faces together. It is important that cooling and lubrication liquid is led to the mechanical seal from the lowest point on the pressure side of the pump to ensure that some liquid reaches there even when priming.

Special header tanks have been installed for seal lubrication in some applications. They must not run dry, and care must be taken to prevent ingress of foreign matter. Many mechanical seals incorporate a carbon face, and there is a possibility of electrolytic action in the presence of sea water. Normally this does not take place in boiler feed water pumps because we use the fresh water treated dosed with corrosion preventing chemicals as the boiler feed.

In the case of sea water pumps, we do not use the mechanical sealing arrangement- instead we use a soft packing arrangement. Stuffing box type glands may be packed with soft or metal foil type packing. The pump internal bearings may be lubricated and cooled by pumping liquid that is always available when the pump is running. A lubricator for the application of grease is also fitted in some circumstances.

The image below shows a mechanical seal arrangement. (Click to enlarge and then use the Back button in your browser to return to the same place in this article.) In the image, elements d1 and a1 bear and slide on each other, creating a seal at their interface. One group of parts is connected to the rotating shaft and the other to the machine’s case. The spring keeps the elements tight against each other, maintaining the seal and allowing for wear.

Shaft should be clearly examined especially in the area of mechanical seal arrangement if excessive wear has taken place the quality of packing used should be investigated and a larger amount of lubricant should be used while running.

Engineered Mechanical SealsPioneers in the industry, we offer boiler feed pump mechanical seal, boiler feed pump seal, high pressure mechanical seal, vacuum processing unit mechanical seal, tunnel drill machine mechanical seal and extruder mechanical seal from India.

We are a highly acclaimed company for offering boiler feed pump"s mechanical seal to the clients. This mechanical seals are available for any kind of high pressure application, like chemical, water, steam, petrol, diesel, oil & gas etc. Offered product is designed and developed by a team of expert professionals so that they can be easily used in heavy industries. In addition, customers can avail custom-made mechanical seals from us.

We are a highly acclaimed company for offering boiler feed pump"s mechanical seal to the clients. This mechanical seals are available for any kind of high pressure application, like chemical, water, steam, petrol, diesel, oil & gas etc. Offered product is designed and developed by a team of expert professionals so that they can be easily used in heavy industries. In addition, customers can avail custom-made mechanical seals from us.

We are a highly acclaimed company for offering Boiler feed pump"s mechanical seal to the clients. This mechanical seals are available for any kind of high pressure application, like Chemical, Water, Steam, Petrol, Diesel, Oil & Gas etc. Offered product is designed and developed by a team of expert professionals so that they can be easily used in heavy industries. In addition, customers can avail custom-made mechanical seals from us.

ApplicationBoiler Feed Water Pumps, Oil Pipeline Pumps, HSD Pumps, Booster Pumps, Drip Pumps, Condensate Pumps, Fuel Oil Pumps & High Pressure Pumps Etc.

Incorporated in 2012, Gipfel Engineering is a widely accomplished manufacturer, exporter and service providerof Chemical Process Pumps & Mechanical Seals. Our product line includes Component Mechanical Seal, Bellow Mechanical Seal, and Cartridge Mechanical Seal. Owing to the qualitative fabrication, our range is widely known among the clients for its attributes such as dimensional accuracy, robustness, high tolerance capacity, leakage proofing and longer shelf life. We serve in various process industries including refineries, petrochemicals, food processing, beverage industries, paint industries & pharmaceuticals. Our products with high technology and excellent quality are in all over India with prompt services. We have partnered with the industry"s best vendors, to obtain the machinery used in our production units. Our installation and repairing services are provided by assiduous professionals. All these products are made under the expert guidance to deliver maximum quality to our esteemed client base. We have made a recognizable growth in our domain in by supplying our Chemical Process Pumps & Mechanical Seals all over India.

Incorporated in 2012, Gipfel Engineering is a widely accomplished manufacturer, exporter and service providerof Chemical Process Pumps & Mechanical Seals. Our product line includes Component Mechanical Seal, Bellow Mechanical Seal, and Cartridge Mechanical Seal. Owing to the qualitative fabrication, our range is widely known among the clients for its attributes such as dimensional accuracy, robustness, high tolerance capacity, leakage proofing and longer shelf life. We serve in various process industries including refineries, petrochemicals, food processing, beverage industries, paint industries & pharmaceuticals. Our products with high technology and excellent quality are in all over India with prompt services. We have partnered with the industry"s best vendors, to obtain the machinery used in our production units. Our installation and repairing services are provided by assiduous professionals. All these products are made under the expert guidance to deliver maximum quality to our esteemed client base. We have made a recognizable growth in our domain in by supplying our Chemical Process Pumps & Mechanical Seals all over India.

Incorporated in 2012, Gipfel Engineering is a widely accomplished manufacturer, exporter and service providerof Chemical Process Pumps & Mechanical Seals. Our product line includes Component Mechanical Seal, Bellow Mechanical Seal, and Cartridge Mechanical Seal. Owing to the qualitative fabrication, our range is widely known among the clients for its attributes such as dimensional accuracy, robustness, high tolerance capacity, leakage proofing and longer shelf life. We serve in various process industries including refineries, petrochemicals, food processing, beverage industries, paint industries & pharmaceuticals. Our products with high technology and excellent quality are in all over India with prompt services. We have partnered with the industry"s best vendors, to obtain the machinery used in our production units. Our installation and repairing services are provided by assiduous professionals. All these products are made under the expert guidance to deliver maximum quality to our esteemed client base. We have made a recognizable growth in our domain in by supplying our Chemical Process Pumps & Mechanical Seals all over India.

Incorporated in 2012, Gipfel Engineering is a widely accomplished manufacturer, exporter and service providerof Chemical Process Pumps & Mechanical Seals. Our product line includes Component Mechanical Seal, Bellow Mechanical Seal, and Cartridge Mechanical Seal. Owing to the qualitative fabrication, our range is widely known among the clients for its attributes such as dimensional accuracy, robustness, high tolerance capacity, leakage proofing and longer shelf life. We serve in various process industries including refineries, petrochemicals, food processing, beverage industries, paint industries & pharmaceuticals. Our products with high technology and excellent quality are in all over India with prompt services. We have partnered with the industry"s best vendors, to obtain the machinery used in our production units. Our installation and repairing services are provided by assiduous professionals. All these products are made under the expert guidance to deliver maximum quality to our esteemed client base. We have made a recognizable growth in our domain in by supplying our Chemical Process Pumps & Mechanical Seals all over India.

Incorporated in 2012, Gipfel Engineering is a widely accomplished manufacturer, exporter and service providerof Chemical Process Pumps & Mechanical Seals. Our product line includes Component Mechanical Seal, Bellow Mechanical Seal, and Cartridge Mechanical Seal. Owing to the qualitative fabrication, our range is widely known among the clients for its attributes such as dimensional accuracy, robustness, high tolerance capacity, leakage proofing and longer shelf life. We serve in various process industries including refineries, petrochemicals, food processing, beverage industries, paint industries & pharmaceuticals. Our products with high technology and excellent quality are in all over India with prompt services. We have partnered with the industry"s best vendors, to obtain the machinery used in our production units. Our installation and repairing services are provided by assiduous professionals. All these products are made under the expert guidance to deliver maximum quality to our esteemed client base. We have made a recognizable growth in our domain in by supplying our Chemical Process Pumps & Mechanical Seals all over India.

HST offers Boiler Feed pumps for high pressure multistage pump mechanical seals Suitable for KSB, Sulzer & KBL Make Pumps, these seals are used in power plants, steel Industries, pharma, oil and gas and sugar industries.

Buy the leading boiler feed water pump mechanical seal at Tradechina.com and perfect the way you seal your products for better safety and efficiency. The boiler feed water pump mechanical seal come in the most diverse selection that comprises numerous different types and sizes so that all users’ needs and specifications are adequately met. The boiler feed water pump mechanical seal are offered at unbelievable discount deals especially when considering their value in terms of performance.

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Structural Features:single end and multiple springs, balanced, dependent rotary direction and coil driven. The coil driven structure is simple and reliable. This seal component is easy to install and the sealing performance is stable and reliable and has a longer life time. Pumping screw/ring arrangement enhances the flow of media.

Scopes of Application:widely used in boiler feed pumps deployed in power plants, booster pumps and other medium pressure and high speed applications. It is specifically designed for boiler feed pumps, booster pumps, clean water pumps, chemical pumps and other rotary devices.

Our Metal or Resin Impregnated Graphite Parts are widely used in equipments of modern industry, such as seal rings for centrifugal pumps reacting kettle for chemical engineering, hydraulic generators and rotate baking furnaces; piston rings and bushings for compressors oxygen machines and bellows, bearings for screen motors and other types of instruments; slides for motors, subways and mine brushes of electrical machinery and slides for trolleybuses, etc.