A steam turbine control valve stem performance test device
A technology for regulating valves and valve stems, which is applied in the field of steam turbines to achieve the effects of preventing leakage, accurate test data, and convenient assembly
Inactive Publication Date: 2017-05-17
HANGZHOU DIANZI UNIV
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
However, the current test device for the valve stem of the steam turbine control valve is still in a technical blank, so it is of great significance to design and build a test bench that can quickly perform the performance test of the valve stem of the steam turbine control valve
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[0023] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0024] Such as figure 1 , a valve stem performance test device for a steam turbine control valve, characterized in that it includes a power unit, a valve stem test installation platform and a test steam supply recovery device.
[0025] The power device includes a motor 1, a frame 7, an eccentric shaft 2, a reciprocating slider 3, a spring 4, a first rolling bearing 5 and a second rolling bearing 6;
[0026] One end of the eccentric shaft 2 is set on the machine base through the first rolling bearing 5, and the other end is connected with the output shaft of the motor 1; the bottom of the reciprocating slider 3 has a groove, and the second rolling bearing 6 is fixed on the reciprocating slider through a pin 8. In the groove of the block 3, one end of the spring is connected to the top of the reciprocating slider 3, the other end of the spring is placed on the base 7, ...
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The invention discloses a performance test device for a valve rod of an adjusting valve of a turbine. The performance test device comprises a power device, a valve rod testing and mounting platform and a test steam supplying and recycling device, wherein the power device comprises a motor, a base, an eccentric shaft, a reciprocating sliding block, a spring, a first rolling bearing and a second rolling bearing; the valve rod testing and mounting platform comprises a connecting frame, a machine body, a valve rod, a connecting rod, a lower shaft sleeve, an upper shaft sleeve, a nut, an upper clamp ring, a leakproof metal bellows,a steam outlet, a steam inlet, an electromagnetism exciter, a gland, a first bolt, a displacement sensor, a flow sensor, a lower clamp ring, a connecting rod nut, a second bolt, a moving ring, a fixed ring and a stud; the test steam supplying and recycling device comprises a vapor generator, a condenser, a water pump, a non-return valve and an adjusting valve. The performance test device is capable of realizing performance tests for different vibration valve rods.
Description
technical field [0001] The invention relates to a steam turbine, in particular to a performance test device for a valve stem of a steam turbine regulating valve Background technique [0002] The control valve is an important steam distribution executive component of the steam turbine. It adjusts different intake air volumes by adjusting the valve stem up and down. Regulating valves operate in a high-temperature and high-pressure steam environment for a long time, requiring the valve to have good sealing and stability to prevent high-quality steam leakage from the valve, resulting in loss of efficiency and even safety accidents. [0003] In actual operation, the airflow excitation acts on the valve stem and the valve disc, which often causes the valve disc to vibrate and eventually leads to a decrease in the service life of the valve disc and the valve seat. The vibration of the valve stem itself and the vibration of the valve disc are transmitted to the valve stem, causing t...
Claims
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IPC IPC(8): G01M13/00
Inventor 许静倪敬吴参蒙臻
Owner HANGZHOU DIANZI UNIV