Mounting device for pressure fluctuation sensor and combustion chamber equipped with the same

A technology of fluctuation sensor and installation device, applied in the direction of combustion chamber, continuous combustion chamber, combustion method, etc., can solve the influence of the stability and safety of the sensor cable 10 of the sensor body, the deviation of signal frequency, amplitude and phase, and high temperature. Air intrusion and other problems can reduce the possibility of shaking and damage, reduce the impact and prolong the service life.

Active Publication Date: 2017-03-01
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Application Information

AI Technical Summary

Problems solved by technology

But the disadvantage is: the pressure fluctuation sensor is not directly near the combustion area, and there is a certain difference between the signal it collects and the pressure fluctuation signal in the combustion area. Judgment of the true situation of fluctuation signals
The air velocity between the combustion tube 3 and the combustion chamber 12 is relatively high, and high-temperature air intrusion occurs at the position of the pressure introduction hole 7, which affects the stability and safety of the sensor body 9 and the sensor cable 10

Method used

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  • Mounting device for pressure fluctuation sensor and combustion chamber equipped with the same
  • Mounting device for pressure fluctuation sensor and combustion chamber equipped with the same
  • Mounting device for pressure fluctuation sensor and combustion chamber equipped with the same

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Embodiment Construction

[0031] Such as Figure 2~6 As shown, the installation device of this embodiment includes an installation seat 8 and an airflow baffle 16 .

[0032] There is a screw hole 20 for fixing the sensor 9 on the mounting base 8. A cooling cavity 18 is also provided inside the mounting base 8. The cooling cavity 18 is located near the screw hole 20 and is arranged around the screw hole 20. It is annular and is a cooling ring cavity. One side of the ring chamber communicates with the outside world through the air inlet 17, and the other side communicates with the outside world through the air outlet 19. Both the air inlet 17 and the air outlet 19 have multiple, so as to reduce the aperture of a single hole, which is conducive to increasing the wind speed , to speed up the cooling rate.

[0033]The airflow baffle 16 is installed on the top surface of the mounting base 8, and the windward side of the airflow baffle 16 is positioned at the same side of the screw hole 20 as the air inlet 1...

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Abstract

The invention discloses a pressure fluctuation sensor mounting device and a combustion chamber with the mounting device. the pressure fluctuation sensor mounting device comprises a mounting seat, and a screw hole for fixing a sensor is formed in the mounting seat; a cooling cavity is formed in the mounting seat and is located nearby the screw hole; and one side of the cooling cavity is communicated with the exterior through an air inlet hole, and the other side of the cooling cavity is communicated with the exterior through an exhaust hole. According to the mounting device, the cooling cavity is designed in the mounting seat, flowing of high-pressure air is utilized for reducing the temperature of the sensor, the sensor is protected against high-temperature damage, and the service life of the sensor is prolonged.

Description

technical field [0001] The invention belongs to the technical field of gas turbine experiment measurement, and in particular relates to a pressure fluctuation sensor installation device, which is suitable for installing the sensor under high temperature and high pressure conditions in a combustion chamber; the invention also relates to a combustion chamber. Background technique [0002] The gas turbine is the core equipment of the gas-steam combined cycle power generation unit. The combustion chamber uses natural gas and high-pressure air to generate high-temperature gas, which is the core high-temperature component of the gas turbine. At present, the advanced gas turbine combustors all adopt dry low pollution combustors (Dry Low NO X , DLN), its combustion method is mainly lean-burn premixed combustion, which is achieved by fully mixing natural gas and air before entering the combustion zone to react. However, premixed combustion is unstable and prone to large pressure fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23R3/16
Inventor 尹洪刘石邓小文田丰冯永新高庆水杨毅蔡笋
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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