- 用途Firstly, function
Steam turbine jack pump oil supply system is an oil supply unit designed to reduce motor’s starting torque when running turbine jigger and eliminate unlubricated friction between axle neck and axle bush in comply with its operating requirement and industrial standard. According to system’s flow requirement, there are two structures: 2 pumps (one for use and one for spare), 3 pumps (two for use and one for spare). When the pump is working, system will inject HP lube into axle bush to bear rotor’s weight so that all can work normally when running unit jigger and after it tripped.
For present jack pump system, mostly used is set pressure overflow system. The pump efficiency is low and the flow cannot meet system’s requirement, resulting in a low jack pressure and affecting rotor’s jiggering work, even producing corrosion on axle bush surface. In addition, using cut-off valve for outlet pressure adjustment is not precise and sensitive and makes oil pressure unstable. As the volume of newly operated unit increases, rotor’s weight increases as well and has higher requirement for jack pump system. In order to solve these problems, we design a new steam turbine jack pump oil supply system and supply in integrated form (with rack).
Our XHJP series jack pump system applies to new unit and restructure of current jack pump system.
- 特点Secondly, feature
Oil system uses constant pressure variable pump and output pressure keeps stable. Output flow varies as per system’s demand.
Add two accumulators when necessary so as to assure the stability and reliability of system’s oil pressure and flow.
The flow of each axle bush applies speed control valve to regulate, with high precision and low interference effect.
The inlet pipe of each pump has a magnetic filter to absorb metal substance in oil.
The inlet pipe of each pump has an inlet filter to protect pump from being damaged by big particles.
The outlet pipe of each pump has an outlet filter to filter out the lube sent to axle bush.
The outlet pipe of each pump has a flow gage to conveniently read outlet flow of the pump and know the pump’s working condition.
Safety devices like overflow valve and check valve are installed in system.
Pressure switch (optional) is installed in system to realize automatic transfer for pump under low oil pressure.
Attach pressure transmitter to transfer pressure signal of jack pump to remote monitoring system.
Main equipment parts inside of system are imported and the quality is reliable and difficult to damage.
Compact integrated oil supply structure is our standardized product with good after sales service.
- 技术参数 Thirdly, parameters
- 工作压力working pressure：18 MPa
- 工作流量working flow：0～107 L/min（每台油泵each pump）
- 电机参数motor parameter：30KW、380VAC、50HZ
- 吸油管路inlet pipe：Φ114mm
- 回油管路return pipe：Φ38mm
- 输出管路outlet pipe：8×Φ22mm
Out dimension: 1800mm(length)×2000mm(width)×1600mm(height)