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High temperature environmental pressure measuring system

A measurement system and technology for high temperature environments, applied in measurement devices, fluid pressure measurement, instruments, etc., to reduce amplitude-frequency and phase-frequency differences, prevent thermal shock, and improve thermal adaptability

Active Publication Date: 2017-07-14
HUANENG POWER INT INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to reduce the error of the dynamic pressure measurement of the unsteady fluid working medium in the existing high temperature environment, the present invention proposes a high temperature environment pressure measurement system

Method used

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Embodiment

[0041] In this embodiment, the cooling heat exchange structure 14 is 80 mm long, the outer wall 19 of the cooling chamber is coaxially arranged with the inner wall 20 of the cooling chamber, the outer diameter of the outer wall 19 of the cooling chamber is 25 mm, the inner diameter is 21 mm, and the wall thickness is 2 mm, and the outer diameter of the inner wall 20 of the cooling chamber is 9 mm. The inner diameter is 5mm and the wall thickness is 2mm. On the inner surface of the cooling cavity inner wall 20 and the cooling cavity bottom plate 21, there is a 15mm long M6×0.5 standard internal thread, and the cooling cavity bottom plate 21 and the cooling cavity cover plate 22 have a wall thickness of 2mm; The plate 17 is 70 mm long and 2 mm thick, and is connected with the outer wall 19 of the cooling chamber and the inner wall 20 of the cooling chamber, and divides the annular space formed between the outer wall 19 of the cooling chamber and the inner wall 20 of the cooling ch...

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Abstract

The invention discloses a high temperature environmental pressure measuring system which comprises a computer, a collector, a control unit, a temperature sensor, a test object, a sensor cooling device, a nitrogen shutoff valve and a pressure sensor. The sensor cooling device comprises a cooling heat exchange structure with a hollow cavity. The hollow cavity of the cooling heat exchange structure is divided into inner and outer cavities. The outer cavity is spaced into two parts, wherein the bottom parts of two parts are communicated. A temperature sensor mounting seat which passes through a part of the outer cavity and is communicated with the inner cavity, and a nitrogen supply pipe which passes through the other part of the outer cavity and is communicated with the inner cavity are arranged on the circumference of the cooling heat exchange structure. The output end of the temperature sensor is connected with the input end of the collector and the input end of the control unit. The output end of the control unit is connected with the control end of the nitrogen shutoff valve. The output end of the pressure sensor is connected with the input end of the collector. The output end of the collector is connected with the input end of the computer.

Description

[0001] Technical field: [0002] The invention relates to a pressure measurement system, in particular to a high temperature environment pressure measurement system. [0003] Background technique: [0004] Pressure is one of the important parameters in the industrial production process. In order to ensure the safe and reliable operation of production, the pressure must be monitored and controlled. The pressure in the field of industrial production, life and scientific research is usually a transient parameter, that is, the pressure of the working medium under study changes with time and has dynamic characteristics. For example, the pressure in internal combustion engines, gas turbines, steam turbines, and rocket engines is basically dynamic. The chamber pressure of guns and explosion shock waves are both dynamic pressures. The pulse pressure of hydraulic and pneumatic devices in various industrial control equipment and power machinery is also dynamic. pressure. Therefore, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L19/06
CPCG01L19/0681Y02E30/30
Inventor 肖俊峰李晓丰王玮王峰
Owner HUANENG POWER INT INC
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