Mass flow characteristic testing device for coolant of liquid-cyclic throttle mechanism

A technology of throttling mechanism and characteristic testing, applied in the direction of mass flow measurement device, indirect mass flowmeter, etc., can solve the problem of not eliminating nitrogen test flow error, etc., and achieve significant social and economic benefits, easy to control, and easy working conditions. stable effect

Inactive Publication Date: 2005-05-11
SHANGHAI JIAO TONG UNIV +1
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Problems solved by technology

[0003] After searching the literature of the existing technology, it is found that the utility model name: electronic expansion valve flow test system, patent number: ZL03232300.X, this patent uses nitrogen for flow test, improves the accuracy and test efficiency of nitrogen flow test, and eliminates the The influence of human factors, but does not eliminate the error between the nitrogen test flow and the actual refrigerant test flow

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  • Mass flow characteristic testing device for coolant of liquid-cyclic throttle mechanism
  • Mass flow characteristic testing device for coolant of liquid-cyclic throttle mechanism

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Embodiment Construction

[0014] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0015] Such as figure 1As shown, the present invention includes a main circuit 1 , a refrigeration circuit 2 , a hot water circulation circuit 3 , an ethylene glycol solution circulation circuit 4 , and an operation console 5 . The main circuit 1 is the core component of the flow characteristic test device, which consists of a magnetic pump 7, a mass flow meter 8, a refrigerant flow path of a high-pressure heat exchanger 9, a test section 6, a refrigerant flow path of a low-pressure heat exchanger 11, and a storage tank. Liquid container 12, filter 13, bypass valve 14 is composed. The test section 6 includes a throttling mechanism 10 to be tested, a sight glass 15 arranged at both ends of the throttle mechanism 10 to be tested, and a ball valve 16 arranged at the inlet and outlet of the test section 6. The main circuit 1 passes through a...

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Abstract

A test unit comprises main loop, refrigerating loop, hot water circulating loop, ethylene glycol circulating loop and control station. It is featured as connecting main loop to hot water circulating loop through high pressure heat exchanger, to ethylene glycol circulating loop through low pressure heat exchanger; connecting ethylene glycol circulating loop to refrigerating loop through ethylene glycol box. The main loop comprises magnetic pump, mass flow meter, refrigerant flowing path for low and high pressure heat exchanger, test section, liquid container, filter and by pass valve.

Description

technical field [0001] The invention relates to a refrigerant mass flow characteristic testing device, in particular to a refrigerant mass flow characteristic testing device for liquid ring throttling mechanism used in testing small and medium-sized refrigeration and air-conditioning devices, and belongs to the technical field of air-conditioning and refrigeration. Background technique [0002] As one of the four major parts of the refrigeration circuit, the throttling mechanism plays a very important role in the system, and it has an important impact on the operation stability and refrigeration effect of the system. In recent years, electronic expansion valves in throttling mechanisms have been widely used in various refrigeration circuits due to their characteristics of wide flow adjustment range, high control precision, fast response and suitable for automatic control. However, when implementing control, no matter what kind of control algorithm is used, it must be applied...

Claims

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Application Information

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IPC IPC(8): G01F1/88
Inventor 马善伟张川陈文勇陈江平陈芝久
Owner SHANGHAI JIAO TONG UNIV
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