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Testing device and method for flow of multistage axial-flow fan of turbine generator

A flow test device, the technology of the turbine generator, applied in the direction of engine function, machine/engine, mechanical equipment, etc.

Inactive Publication Date: 2017-05-10
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] On the axial flow fan of the axial ventilation generator, from the analysis of the experimental cost and the feasibility of device installation, the two flow measurement methods specified in the national standard for conventional axial flow fan testing cannot be used

Method used

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  • Testing device and method for flow of multistage axial-flow fan of turbine generator
  • Testing device and method for flow of multistage axial-flow fan of turbine generator
  • Testing device and method for flow of multistage axial-flow fan of turbine generator

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Experimental program
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Embodiment

[0023] Such as figure 1 As shown, this embodiment provides a steam turbine generator multi-stage axial fan flow test device, which includes a main body 4 with the same shape as the fan blade to be tested. The front and rear edges of the main body 4 are symmetrically arranged There are five pairs of pressure measuring hole 1 and pressure measuring hole 2; the main body 4 has a pressure measuring hole 3 3 on both sides of the leaf surface, and the pressure measuring hole 3 3 is located at 1 / 2 of the height of the main body 4. Each pressure measuring hole is connected to the pressure measuring tube of the pressure measuring instrument through a respective measuring pipe in the main body 4.

[0024] A method for testing the flow rate of a multi-stage axial fan of a steam turbine generator: the above-mentioned multi-stage axial fan flow test device of the steam turbine generator is installed in parallel on one side of any blade of the fan to be tested, and the fan is turned on for test...

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Abstract

The invention discloses a testing device and method for the flow of a multistage axial-flow fan of a turbine generator. The testing device comprises a body, wherein the shape of the body is identical with the shape of each blade of the fan to be tested. The front edge and the back edge of the body are provided with at least one first pressure measuring hole and at least one second pressure measuring hole correspondingly. Each pressure measuring hole is connected with a pressure measuring pipe of a pressure measuring instrument through a respective measuring pipeline in the body. The testing method comprises the steps that at least one measuring device is adopted, the measuring device is installed on one side of any one blade of the fan to be tested in parallel, and the fan is switched on for testing; and according to the data measured by the pressure measuring instrument, a relevant calculation formula is adopted to calculate the total flow of the fan to be tested. According to the testing device and method for the flow of the multistage axial-flow fan of the turbine generator, the flow of the fan and the wind direction of an inlet are measured through a plurality of measuring points, in the blade height direction, of the testing device, and therefore an important function is achieved on the further improvement of the pneumatic performance of the fan, the improvement of the ventilation efficiency and temperature rising level of a generator and the decrease of the draft loss of the generator.

Description

Technical field [0001] The invention relates to a flow test device and method for a multi-stage axial flow fan of a steam turbine generator, which can be used for the performance design and optimization of the axial flow fan of a large steam turbine generator, and belongs to the technical field of generator ventilation cooling design. Background technique [0002] The test parameters, test methods, test instruments and test procedures of the ventilation and cooling system of large generators are important technical foundations in the development of generators. As the most important ventilation component in a generator with fan axial ventilation, the aerodynamic characteristics of the fan have a significant impact on the cooling capacity and temperature rise of the generator. The stator and rotor of the generator are highly integrated, and the space available for fan structure is limited. The design of test instruments that adapt to the generator structure, operating environment, ...

Claims

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Application Information

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IPC IPC(8): F04D27/00
CPCF04D27/001F05D2260/83
Inventor 胡磊咸哲龙张小虎梁旭彪戴韧陈榴
Owner SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD
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