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Testing device for external characteristics of high-temperature molten salt pump

A test device, high-temperature molten salt technology, applied in pump testing, liquid variable-capacity machinery, machines/engines, etc., can solve the problems of less research, impact on measurement accuracy, and difficulty in performance testing, and achieve high efficiency.

Inactive Publication Date: 2015-02-25
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The performance test of the pump using water as the medium is less difficult, and there are many types of test devices, but the performance test of the molten salt pump for conveying high-temperature molten salt is relatively high due to its high operating temperature (up to over 500°C), and there are few related studies. There is currently no dedicated test facility
Manufacturers of molten salt pumps usually use water instead of molten salt for molten salt pump performance tests, and then obtain the performance of the pump when transporting molten salt through conversion, which avoids the problem of high temperature, but the measurement accuracy is affected. There is a certain deviation between the performance and the actual performance

Method used

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  • Testing device for external characteristics of high-temperature molten salt pump
  • Testing device for external characteristics of high-temperature molten salt pump
  • Testing device for external characteristics of high-temperature molten salt pump

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Experimental program
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Effect test

Embodiment 1

[0094] exist figure 1 Among them, the device of the present invention includes six systems, which are power transmission system, hydraulic system, gas system, heating system, heat preservation and heat tracing system, and data acquisition and analysis system.

[0095] The power transmission system of the present invention comprises a motor (12), a shaft coupling (14), a motor support (11), and a transmission shaft (10). Motor (12) is installed on the molten salt pump fixed plate (15) by motor support (11), and molten salt pump fixed plate (15) is fixed on molten salt tank cover plate (16) top by bolt. The motor (12) and the transmission shaft (10) are connected through a coupling (14) to realize power transmission.

[0096] exist figure 1 Among them, the liquid circuit system of the present invention includes molten salt tank (19), molten salt pump (26), molten salt pump outlet pipe (31), valve (6), expansion joint (34), reducing pipe (9), U-shaped jacketed pipe (2). The g...

Embodiment 2

[0103] The main steps of molten salt pump performance test are:

[0104] 1) Remove the sundries in the molten salt tank (19), especially without leaving organic matter and combustibles. The three components of molten salt are all strong oxidizers, which are easy to decompose to release oxygen and heat. It is not flammable itself, but it can cause Combustibles burn and are sensitive to friction and thermal shock.

[0105] 2) Connect the motor (12) to the pump shaft, remove the impeller of the molten salt pump (26), adjust the frequency converter to adjust the motor (12) to the test speed, and record the no-load torque of the pump.

[0106] 3) Install the entire power transmission system on the molten salt tank cover (16).

[0107] 4) Check whether all instruments and equipment are working normally.

[0108] 5) Add molten salt powder into the molten salt tank (19).

[0109] 6) Turn on the steam tracing circuit and the electric heating belt (7) of the jacketed pipe (2), prehea...

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Abstract

The invention provides a testing device for the external characteristics of a high-temperature molten salt pump. The testing device is mainly used for measuring the external characteristics of the molten salt pump when the molten salt pump conveys high-temperature molten salt. The testing device mainly comprises a power transmission system, a liquid path system, a gas path system, a heating system, a heat insulation heat tracing system and a data collection and analysis system. The power transmission system provides power for stable operation of the molten salt pump. The liquid path system forms a molten salt circulation loop and guarantees that the testing device has high measurement precision and operates safely. The gas path system provides protective gas for the molten salt. The heating system heats the molten salt directly and has the advantage of being efficient. The heat insulation heat tracing system carries out heat insulation through alumina silicate fibers in the mode of combining steam heat tracing and electric heat tracing so as to prevent the molten salt from solidifying. The data collection and analysis system is used for collecting pressure signals, rotation speed signals, flow rate signals, temperature signals, current signals, voltage signals and other signals and analyzing the collected data to obtain the external characteristics of the molten salt pump.

Description

technical field [0001] The invention relates to a test device for a high-temperature molten salt pump, which is mainly used for measuring the external characteristics of the high-temperature molten salt pump. Background technique [0002] The molten salt pump is a pump specially used to transport high temperature molten salt. The medium movement in the molten salt pump is very complicated. At present, the design of the pump is still completed by experience, or semi-empirical and semi-theoretical methods. These theories and experiences are derived from scientific experiments and production practices. Therefore, the test of the molten salt pump is of great significance to the design, production and use of the pump. The performance test of the molten salt pump can not only provide a reliable technical basis for product improvement and production, but also play an extremely important role in the research and development of the basic theory of the molten salt pump, the improveme...

Claims

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Application Information

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IPC IPC(8): F04B51/00
Inventor 邵春雷黄思杰顾伯勤周剑锋程文洁
Owner NANJING UNIV OF TECH
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