Measurement testing device of external characteristics and internal flow of fused salt model pump

A test device and internal flow technology, which is applied to components, pumps, and pump control of pumping devices for elastic fluids, and can solve problems such as inability to measure, single function, and unreasonable design of model pumps for testing, etc.

Inactive Publication Date: 2013-05-22
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In recent years, researchers at home and abroad have developed some pump performance test devices, and conducted a lot of research on the external characteristics and internal flow of the pump. However, the existing test devices have the following shortcomings: (1) Single function, such as: only The external characteristics can be measured, or only one measurement flow measurement technology can be used for internal flow measurement; (2) The design of the model pump used in the test is not reasonable enough, the measurable range of internal flow is small, and it is impossible to measure the entire flow field in the pump ; (3) Complex operation and low degree of automation

Method used

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  • Measurement testing device of external characteristics and internal flow of fused salt model pump
  • Measurement testing device of external characteristics and internal flow of fused salt model pump
  • Measurement testing device of external characteristics and internal flow of fused salt model pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] The test device for measuring the external characteristics and internal flow of the molten salt model pump includes 5 main parts: pipeline system, power transmission system, model pump, external characteristic data acquisition and analysis system, and internal flow measurement system. The test device has three functions: measurement of the external characteristics of the model pump, PIV measurement of the internal velocity field of the model pump, and high-speed imaging measurement of the internal flow of the model pump, which can realize the experimental research on the external characteristics of the pump and the internal full flow field.

[0068] exist figure 1 Among them, the pipeline system of the present invention is composed of a storage tank (15), a ball valve (17), a pump inlet hose (28), a pump outlet hose (4), a regulating valve (6) and corresponding connecting pipelines. All flow parts except hoses are made of stainless steel to prevent rust from polluting ...

Embodiment 2

[0078] The main steps of external characteristic measurement are:

[0079] 1) Remove the sundries in the storage tank (15), and fill the test medium into the storage tank to an appropriate level.

[0080] 2) Check whether the equipment is normal.

[0081] 3) Separate the torque speed sensor (9) from the transmission shaft (7), adjust the motor (18) to the test speed through the frequency converter, and then zero-adjust the torque speed sensor (9).

[0082] 4) Connect the motor (18) to the transmission shaft (7), remove the impeller (41) in the pump, adjust the frequency converter to adjust the motor to the test speed, and record the no-load torque of the model pump.

[0083] 5) Open the ball valve (17) to prime the pump.

[0084] 6) Turn on the power supply of each instrument, the instrument switch is in the "OFF" position, press the motor start button, and start the model pump (27). Adjust the frequency converter so that the speed gradually increases from small to large ...

Embodiment 3

[0094] The main steps of the PIV measurement of the pump internal velocity field are:

[0095] 1) Arrange the PIV measurement system.

[0096] When measuring the velocity field inside the impeller channel and pressurized water chamber, the layout of the PIV system is as follows: Figure 5 shown. The trigger signal sent by the Hall sensor (23) controls the CCD camera (49) and the laser (50) simultaneously through the synchronous controller (47), and the CCD camera (49) transmits the pictures taken to the computer unit (48). The thickness of the sheet light emitted by the laser (50) is controlled within 1mm, and the interior of the model pump is irradiated from the side of the volute (37), and the CCD camera (49) is facing the area illuminated by the laser sheet light, keeping an appropriate distance from the laser sheet light ( about 500 mm), adjust the focus until the image is clear. Because the blade is a binary blade, the main flow surface in the impeller is parallel to...

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Abstract

The invention provides a measurement testing device of external characteristics and internal flow of a fused salt model pump. The measurement testing device of external characteristics and internal flow of the fused salt model pump is mainly used for measuring the external characteristics and an internal velocity field of the fused salt model pump, and carrying out shooting and research of high-speed flow inside the fused salt model pump. The measurement testing device of external characteristics and internal flow of the fused salt model pump mainly comprises a pipeline system, a power transmission system, a model pump, an external characteristic data acquisition and analysis system and an internal flow measurement system. Arrangement of the pipeline system ensures an enough operating space, high measurement accuracy and convenience of testing when tests are carried out. The power transmission system provides power for stable operation of the fused salt model pump. An impeller and a pump supporting seat of the fused salt model pump are made of stainless steel, other components of the fused salt model pump are made of organic glass, and the fused salt model pump has the advantages of being good in hydraulic performance, high in strength, wide in measurable area and the like. The external characteristic data acquisition and analysis system collects signals of pressure, revolving speed, torque, flow and the like, the signals are processed and analyzed, and the external characteristics of the fused salt model pump are obtained. The internal flow measurement system can carry out peak inverse voltage (PIV) measurement to the internal velocity field of the fused salt model pump, carries out internal peeping high-speed imaging to internal flow of the fused salt model pump, and achieves research of an internal whole flow field of fused salt model pump.

Description

[0001] technical field [0002] The invention relates to a pump test device, in particular to a test device for measuring the external characteristics and internal flow of a molten salt model pump. Flow for filming research. Background technique [0003] Molten salt pump is a kind of centrifugal pump, which is used to transport high-temperature molten salt (nitrate). It is suitable for fine chemical industries such as melamine projects, alumina projects, caustic soda projects, and energy storage medium transportation in solar thermal power generation projects. . [0004] The external characteristics of the molten salt pump (mainly including: head, flow rate, shaft power and efficiency, etc.) are the main basis for pump selection, which directly affects the working parameters in the production process; , impeller channel and flow in the pressurized water chamber) directly affect the external characteristics of the molten salt pump, and the external characteristics of the pu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D15/00F04D29/42F04D29/22
Inventor 邵春雷顾伯勤董金善周剑锋程文洁
Owner NANJING UNIV OF TECH
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