Isothermal container

A container and isothermal technology, applied in mass flow measurement devices, detecting fluid flow by measuring differential pressure, indirect mass flow meters, etc., can solve problems that have not yet been discovered, and achieve low gas source capacity requirements, low gas consumption, and experimental devices simple effect

Inactive Publication Date: 2005-04-13
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In further literature search, no report identical or similar to the subject of the present invention has been found so far

Method used

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  • Isothermal container

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Embodiment Construction

[0011] Such as figure 1 As shown, the isothermal vessel of the present invention is a vertical flange connection, gasket-sealed pressure vessel, and the pressure vessel is mainly composed of a flange cover 1, a rubber sealing gasket 2, a container main body 4, and legs 6. The legs 6 are connected to the container The main body 4 is welded as a whole, the rubber sealing gasket 2 is placed on the container main body 4, and the flange cover 1 and the container main body 4 are connected by screws 9 . Three interfaces are welded on the container main body 4, one is the air inlet 3, the other is the exhaust outlet 7, and the other is the drain outlet 5, which is filled with phosphor copper wire 10 with a wire diameter of 30-50 μm.

[0012] The air inlet 3 and the exhaust port 7 are arranged symmetrically, and a gauze 8 is arranged at the exhaust port 7 . The drain port 5 is provided at the bottom of the container main body 4 .

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Abstract

The isothermal container used in measurement and control fields includes mainly container body, flange connected to the container body, sealing rubber washer and support legs welded to the container body. The container body has three welded ports, including air inlet, air outlet and water draining port, phosphor copper wire filled inside it, and gauze set in the air outlet. Based on the principle that during inflation and deflation, the temperature of air inside the isothermal container maintains unchanged basically, the present invention measures the deflation pressure of the container to obtain the mass flow rate and flow characteristic of the measured pneumatic element connected to the container while neglecting the temperature change. The present invention has simple structure, short measurement time, low air consumption and other advantages.

Description

technical field [0001] The invention relates to a measuring device, in particular to an isothermal container for measuring flow characteristics of pneumatic components. Used in the field of measurement control. Background technique [0002] The current international standardization draft ISO6358 for measuring the flow characteristics of actual pneumatic components has the disadvantages of complex test equipment, long measurement time, and high power consumption. For this reason, new test methods must be adopted. At present, the alternative test methods include the fixed container filling method and the discharge method. The isothermal container is an important tool to ensure the accuracy of the above replacement test methods. Therefore, it is very necessary to develop an isothermal container. The process of filling and deflation of the fixed volume is very short, it only takes a few seconds to complete, and its energy consumption is very small. If the flow characteristic o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/34G01F1/86
Inventor 叶骞孟国香谢文华刘成良冯正进
Owner SHANGHAI JIAO TONG UNIV
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