Mazda Limited offers a complete range of equipment for Power Plant including Steam Surface Condenser, Complete Condensing System, Ejector Vacuum System, Gland Steam Condenser with Fan or Ejector, Low Pressure (LP) Feed Water Heater, High Pressure (HP) Feed Water Heater, Oil Coolers, Dump Tubes, Shell & Tube Heat Exchangers, Flash Tanks, Pressure Vessels etc.
Finding innovative ways to help the world meet its ever growing demand for power is a key focus for Mazda. Our ideas are helping to build more efficient equipment.
We have provided equipment for power generation and Mechanical drive solutions for virtually every kind of energy demanding industry:
When it comes to the performance of a turbine surface condenser in the operational field of a steam turbine cycle, you need utmost reliability and efficiency. Here’s where Mazda’s know how is invaluable. We create customise package solutions for each particular customer’s needs.
Our General Scope of Supply:
The steam surface condenser is a critical component of both the traditional coal fired power plant and the new generation co-generation and combined cycle power plants.
Main duties of any surface condenser are to convert the exhaust steam from its gaseous to its liquid state at certain under atmospheric pressure, and also, to release non-condensable presented in the steam cycle, together with vacuum unit.
Mazda designs and economically sized condenser suitable for smaller turbine ratings under 50 MW. The circular configuration is compact for easy shipping and maintains the level of quality afforded all of our condenser designs.
All of Mazda’s Surface Condensers are designed and built to the Heat Exchange Institute latest Standards. We also strive to meet all of our client’s project specific requirements.
Our condenser design can incorporate enhanced deaerating systems, and or a variety of turbine exhaust options including Axial and Top steam inlet design, which can assist greatly in improving plant layouts. We continually address and refine these and other considerations associated with circular designs where space is at a premium.
Mazda Surface Condensers are fabricated in-house state of the art fabrication facilities located in Ahmedabad. All of the fabrication facilities are according to ASME code and an impeccable reputation for quality fabrication and on time delivery.
Our Surface Condensers feature high overall heat transfer coefficient (which result in smaller heat transfer areas and thus optimal use of the available space) and extremely low oxygen concentrations in the condensate. They are designed to stand up to turbine and steam generator overloads and to variations in cooling water temperature at different times of the year.
Mazda Surface Condenser highlights:
Air cooling zone is provided in the coolest part of the condenser, which eliminates the carry over of the steam to the ejector vacuum system along with the non-condensable gases.
The steam jet ejectors are pumps that mix or compress different fluids.
They have no moving parts and operate by the action of one high pressure stream entraining steam ,air and other vapors (or liquids) at a lower pressure into the moving stream and there by removing them from the process system at an intermediate pressure higher than the suction pressure but many times lower than the motive steam pressure.
The main components of the steam jet ejectors are: the nozzle, the suction and mixing chamber, the diffuser.
Steam jet Ejectors have the following features which make them good choices for continuously producing economical vacuum conditions:
1. They handle wet, dry or corrosive vapor mixtures.
2. They develop any reasonable vacuum needed for industrial & other operations.
3. All sizes are available to match any small or large capacity requirements.
4. Their efficiency is good.
5. They have no moving parts, hence maintenance is low, and operation is fairly constant when corrosion is not a factor.
6. Stable operation within design range.
7. Installation costs relatively low when compared to mechanical vacuum pumps. Space requirements small.
8. Simple operation and maintenance.
Gland seal systems are very important to main and auxiliary turbines. Turbine shafts must exit their casings in order to couple up or connect with the unit that the turbines drive (reduction gears, pumps, etc.) The main and auxiliary gland seal systems enable the turbine to be sealed where the shaft exits the casing; in effect keeping “air out and steam in.” The purpose of gland seal system is to prevent the leakage of air from the atmosphere into turbine casings and prevent the escape of steam from turbine casings into the atmosphere.
The gland sealing system provides low pressure steam to the turbine gland in the final sets of labyrinth packing. This assists the labyrinth packing in sealing the turbine to prevent the entrance of air into the turbine, which would reduce or destroy the vacuum in the associated condenser. Excess pressure (excess gland seal) is removed by the gland seal unloader.
Since there are times when steam escapes from the seals, a gland exhaust system is provided. The gland exhaust system consists of low pressure piping connected to the gland area between the last two outer sets of labyrinths which receives and prevents steam from escaping to the atmosphere. This system collects the steam and directs it to a condenser for further use in the steam plant.
Steam leaking from the gland seal area of the shaft packing, steam leak off from the steam chest lift rods, and steam leak off from the trip throttle valve is drawn into the gland exhaust system and into the air ejector condenser.
The steam is condensed in the SSTG air ejector condenser. Air and non condensable gases are discharged to the atmosphere via the gland exhaust fan or Ejector which maintains a slight vacuum on the auxiliary air ejector condenser.
Most steam turbines have a shaft sealing system which uses carbon rings to isolate the rotor assemblies on both ends with steam injected to prevent air in-leakage in to the turbine. The leakage would reduce turbine efficiency and flow into the condenser downstream of the turbine further reducing system efficiency. This gland steam must be removed by an ejector or exhaust fan to prevent it from flowing back into the turbine.
Dump Condensers are used to recover large amounts of steam that may otherwise be vented to the atmosphere. During fluctuating steam loads, turbine trip off, turbine start-up, or bypass, the excess steam that would ordinarily be vented can be diverted to a dump condenser. Dump Condensers may also be used for process plants when upset demand conditions occur.
A dump condenser is required when the steam consumption needs to be drastically reduced in a very short period of time and when the boiler cannot follow this variation.
The needs of the power generation industry include year-in and year –out reliability, optimum performance for maximum efficiency, and absolute on-time delivery to meet plant outage schedules.
All of Mazda Feed Water Heaters are designed in accordance with HEI standards, TEMA and ASME section VIII code. Mazda uses state-of –the art computer programs to perform the thermal-hydraulic and mechanical design of each feed water heater we fabricate.
Mazda designs and manufactures both low pressure and high pressure feed water heaters which may be installed either vertically or horizontally , depending on the plant design requirements.
Each Mazda Feed water heater will contain from one to three separate heat transfer areas of zones including the Condensing, De-superheating and Sub-cooling zones. Our heaters can be provided with multiple zones within the shell side
Mazda’s engineers are always available to assist you in determining those design parameters and how they will impact performance in your power plant. Call today to experience the unique performance difference of Mazda. From engineering to manufacturing to installation to longer and more reliable service life from your Feed Water Heaters
Mazda understand the unique needs of the power generation industry and provides it Feed Water Heaters that withstand years of rigorous service.
All shell and tube heat exchangers, irrespective of the type of service for which they were designed, must withstand severe service conditions. The service life of feed water heaters, however, is one of the toughest because of the longevity and reliability factors inherent in power plant equipment designs.
Mazda Feed Water Heaters are designed for specific thermal conditions and manufactured for a singular purpose. Whether it be sophisticated designs involving extreme superheat, abnormal flow conditions or dissipation of high energy fluids. In addition , Mazda provides innovative and practical concepts to ensure peak heater performance from installation to testing through full or part-load operation.
We offer a multitude of design configurations for De-superheater and drains cooler zones as well as the latest in channel closure techniques.
Mazda has been melting the needs to the power generation industry for more than two decades. Mazda’s quality makes the company the most respected supplier of heat transfer equipment in India .
Feed Water Heater:
Lubricating oil reduces friction between moving mechanical parts and also removes heat from the components. As a result, the oil becomes hot. This heat is removed from the lube oil by a cooler to prevent both breakdown of the oil and damage to the mechanical components it serves. The lube oil temperature must be maintained within a specific operating band to ensure optimum equipment performance.
Lube oil coolers are designed based on the customer specifications. Designs are available as single coolers or duplex coolers with change over valves.
Duplex coolers can be supplied either in standard Horizontal design or vertical design if space is constrains.
Coolers can be designed according to good engineering practice or as per TEMA and ASME codes based on customer requirements.