Valve Gear Box

The gearbox of a wind turbine is one of the key components in wind power generation equipment, used to transfer the kinetic energy of the rotating wind turbine to the generator, thereby generating electrical energy. It is usually composed of multiple gears, which increase the speed of the wind turbine through precise transmission ratios and convert it into a speed suitable for the operation of the generator. Usually, the speed of the wind turbine is very low and far from the required speed for the generator to generate electricity. It must be achieved through the speed increasing effect of the gearbox gear pair, so the gearbox is also called a speed increasing gearbox.

JH series gear reducers for cement kilnsare involute cylindrical gear units with parallel shafts which has four reduction stages.This series has four basic structure including over 50 types.Thanks to the standardized,series and modulated design,the reducers can be manufactured according to standard or specific requirements at customers'choice with good reliabiity and maintenance.

The latest XB series gear reducers for roller presses includes totaly 33 models with transmission powerup to 4,000kW and a torque transmission capacity up to 5300KN.m.

The variable pitch gear box is an important part of the fan variable pitch system, its main function is to increase the torque of the variable pitch motor on the variable pitch bearing, drive the blade to change the blade pitch Angle at different wind speeds, so that the blade is in the best state of absorbing wind energy, and can drive the blade feathering brake when the wind speed exceeds the cutting wind speed, so as to ensure the machine to run efficiently and smoothly.
The variable gear box transmission mechanism is composed of multiple planetary gear trains, usually 3 stages, and the planetary transmission form is NGW type.

Depending on your gearbox model, our engineers can often conduct repairs in situ to reduce downtime to its lowest level. If your gearbox cannot be repaired at site, our proposals team will strive to minimize the costs associated with removing your gearbox from its application and upgrade recommendations for gearboxes experiencing serial failure. Gearbox spares were used at Mill & Diffuser drives, Cooler drives, knife drives, Centrifuge & Shredder drives, Rotary vacuum filter drives and Generator drives.

1.Worm gear box adapts to i.S.O standard so that ia can change parts easily..
2.Housing of worm gear box made by casting, moreover.It bears up against thrust due to superior quality and sophisticated design.
3.Regarding gear, it makes the gear box relax from noise under optimum heat treatment & precise grinding.
4.Stem nut(bush) is not uni-body but separated so that isolable type enable bush to be convenient, efficient and so on.
5.Protection grade can be ip65.
6.Hand wheel is optional index.


Plywood carton

* The Gear Box Operated Gate Valve is exceptionally sturdy, rugged, and durable, with a reputation for quality, integrity, and long service.

* They are designed for tight sealing and ease of operation. The valves are available flanged & butt-weld ends in pressure rating from ASME Class 150 to Class 2500, and in a variety of materials of construction.

* Gate Valves are of flexible wedge design, outside screw and yoke, and bolted-bonnet construction. The valves conform to API 600.

Main features
* Bolted body-bonnet design,seal welded & Valves with pressure seal bonnet
* Bellows-sealed Gate and Globe valves available
* Bolted body-bonnet joints provided with spiral-wound stainless steel gasket and graphite filler for maximum protection against leaks
* Die-formed graphite inner packing rings and braided graphite end rings with Inconel wire reinforcement and corrosion inhibitor
* T-head stem-disc connection of gate valve fully meets strength requirements of API 602 and API 598
* Rolled ACME thread on stem for smooth operation
* Tapered shoulder on the stem for back seating
* Self-aligning type gland assembly with stud-and-nut tightening
* Integral hard-faced body seat for globe and check valves
* Spring-loaded disc on check valves suitable for no horizontal applications too
* Gate and globe valves can be offered with electrical actuators
* Austenitic SS forging for body and bonnet of Cryogenic valves, resulting in excellent impact strength, minimal heat loss and resistance to corrosion
* Valves can be offered to NACE MR-0175 and other special NACE requirements