Modularized vacuum system of saturated vapor pressure and solid density of tested substance and applications

A vacuum system and vapor pressure technology, applied in the direction of measuring devices, specific gravity measurement, instruments, etc., can solve the problems of single test module and range, easy leakage, and many pipeline connection points, so as to reduce pipeline connection points and improve applicability Strong, easy to install and operate effect

Inactive Publication Date: 2012-07-25
SHANGHAI RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a modular vacuum device for testing the saturated vapor pressure and solid density of substances in order to overcome the above-mentioned defects

Method used

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  • Modularized vacuum system of saturated vapor pressure and solid density of tested substance and applications
  • Modularized vacuum system of saturated vapor pressure and solid density of tested substance and applications
  • Modularized vacuum system of saturated vapor pressure and solid density of tested substance and applications

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Embodiment

[0037] A modular vacuum device for testing the saturated vapor pressure and solid density of a substance, the structure of which is as follows figure 1 shown. It includes an integrated device 1, a constant temperature heating device 2, a quick connector 3, a vacuum valve 4, a vacuum gauge 5, a three-way valve 6, a buffer bottle 7, and a vacuum pump 8 connected in series. The integrated device 1 is placed in the constant temperature heating device 2, and different water bath or air bath temperatures are selected according to different samples. One to ten integrated devices 1 may be provided, and three are provided in this embodiment. Each integrated device 1 is connected to a vacuum valve 4 through a quick fitting 3, the vacuum valve 4 is connected to a vacuum gauge 5, the vacuum gauge 5 is connected to one end of the three-way vacuum valve 6, and the other end of the three-way vacuum valve 6 is connected to the buffer bottle 7 Connection, the buffer bottle 7 is connected wit...

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PUM

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Abstract

The invention relates to a modularized vacuum system of saturated vapor pressure and solid density of a tested substance and applications thereof. The system comprises constant temperature heating devices, integrated devices, quick couplers, vacuum valves and a three-way valve, wherein each integrated device consisting of a bottle, a valve and vacuum meters is arranged in a constant temperature heating device; the quick couplers, the vacuum valves and the three-way valve are sequentially connected with the integrated devices through pipelines; one joint of the three-way valve is connected with a buffer bottle connected with cascade vacuum pumps; and the system can be used for calculating the density of the substance. Compared with the prior art, the system has the advantages that the dead volume and the connecting point number of the system are furthest reduced by optimized design, and the problems of multiple pipeline connecting points, leakage and single test module and measuring range in the conventional saturated vapor pressure testing vacuum device are solved.

Description

technical field [0001] The invention relates to a device and application for measuring range, in particular to a modular vacuum system and application for testing the saturated vapor pressure and solid density of substances. Background technique [0002] Saturated vapor pressure represents the ability of liquid to evaporate and vaporize, and is an important indicator for evaluating the vaporization of volatile liquid fuels. The higher the vapor pressure, the easier the liquid is to vaporize. The higher the vapor pressure of the fuel, the easier it is to start the internal combustion engine at low temperatures. But on the other hand, the higher the vapor pressure of the fuel oil, the greater the possibility of forming a gas lock in the oil inlet system and the tendency of the loss of light fractions during storage and transportation, and the greater the evaporation loss. If the vapor pressure of vehicle fuel is too large, when the temperature is too high or the outside air ...

Claims

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Application Information

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IPC IPC(8): G01N9/02G01N7/14
Inventor 林建张春晖刘刚张小沁
Owner SHANGHAI RES INST OF CHEM IND
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