High precision adjustable automatic constant temperature test system for pump

Abstract

The invention relates to a high precision adjustable automatic constant temperature test system for a pump and belongs to the pump production technology field. The system comprises a liquid storage case, test medium, a temperature rising device, a cooling device, a compulsory convection device, a temperature measurement and analysis system, a temperature acquisition and control system, a pump inlet pipeline and a pump outlet pipeline, wherein the test medium is stored in the liquid storage case, the temperature rising device, the cooling device, the compulsory convection device, temperature sensors, the pump inlet pipeline and the pump outlet pipeline are mounted on the liquid storage case, the temperature rising device is mounted at the lower portion of the inner side of the liquid storage case, the cooling device is mounted at the upper portion of the inner side of the liquid storage case, the temperature measurement and analysis system is a sensor, the compulsory convection device is mounted at the bottom portion of the inner side of the liquid storage case, the temperature sensors are respectively mounted on the pump inlet pipeline, the upper portion of the temperature rising device and the lower portion of the cooling device, and the temperature acquisition and control system is for control. The system has advantages of high precision, high automation degree, long medium service life and wide market prospects.

Description

Technical field: [0001] The invention relates to the technical field of pump production, in particular to a high-precision adjustable automatic constant temperature test system for pumps. Background technique: [0002] The pump test device generally requires that the temperature of the test medium (water, oil or emulsion) should be kept constant, which is conducive to ensuring the accuracy of the test or the consistency of the test data. At present, the temperature adjustment of the pump test device is generally divided into the following situations: [0003] no temperature control [0004] This kind of test system has no way to talk about temperature control, and the temperature of the test medium is in a follow-up state. The test device has no precision at all, and many test items cannot be carried out. This test device is also used in small quantities. [0005] Manual intervention side mounted temperature control device [0006] The heating, cooling and stopping of t...

AI Technical Summary

Problems solved by technology

[0014] This temperature control system does not need manual control, the system automatically collects the temperature of the medium and controls it automatically. The degree of automation is improved, but the control accuracy is not high.

[0015] Regardless of the temperature control method, there are the following functional defects or deficiencies, which seriously affect the test accuracy and degree of automation, and even cannot carry out some specific tests

[0016] 1. Both the heating device and the cooling device are in local and scattered distribution, and there is no potential difference between the heating device and the cooling device. The distribution of the heat source (cold source) generated in this way is unreasonable, which is not conducive to heat transfer, and the heat transfer speed and intensity are small. The heat transfer time is long and the temperature difference is large, resulting in poor heat transfer effect, which is not conducive to heat transfer and inaccurate temperature data, which is not conducive to precise control

[0017] 2. The heat transfer mode of the temperature rise device and the cooling device is natural convection, the heat transfer speed is slow, the temperature difference between the heat source (cold source) and the pump pipeline inlet and outlet medium is large, the temperature control hysteresis is serious, and it is easy to overheat or overcool

[0018] 3. Single temperature collection point

[0020] The speed is uncontrollable, which will cause great damage to the test medium, and the heat conduction is uneven, which is not conducive to the long-term maintenance of the test medium, which is not conducive to energy saving and environmental protection

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