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A method and device for quickly balancing the temperature in a pvtt standard container

A standard container and balancing device technology, applied in the field of rapid temperature balancing in pVTt standard containers, can solve problems such as low detection efficiency of constant temperature methods, and achieve the effects of improving temperature consistency and constant speed, avoiding dead zones, and reducing the number of

Active Publication Date: 2017-06-20
BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a method and device for quickly balancing the temperature in a pVTt standard container, which effectively solves the problem of low detection efficiency of the constant temperature method in the prior art

Method used

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  • A method and device for quickly balancing the temperature in a pvtt standard container
  • A method and device for quickly balancing the temperature in a pvtt standard container

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Such as figure 1 and figure 2 As shown, a kind of pVTt standard container of the present invention uses temperature rapid balance device, and it comprises constant temperature water jacket 1, constant temperature water pipe 2, blower fan 3 and temperature sensor 4;

[0022] The constant temperature water jacket 1 is arranged outside the outer wall of the pVTt standard container, and the constant temperature water pipe 2 passes through the pVTt standard container and is located in the middle of the pVTt standard container;

[0023] The fan 3 is located at both ends of the pVTt standard container; the temperature sensor 4 is located inside the pVTt standard container;

[0024] Several middle partitions 6 are arranged inside the pVTt standard container, the inner side of the middle partition 6 is connected with the constant temperature water pipe 2, and the outer side of the middle partition 6 is connected with the inner wall of the pVTt standard container.

[0025] The...

Embodiment 2

[0030] Adopt the pVTt standard container of embodiment 1 device to use temperature fast balance method, it may further comprise the steps:

[0031] (a) Before using the pVTt standard container experiment and after the inflation is over, start the blower fan 3, so that the gas in the pVTt standard container is circulated along the circulation air duct formed by several intermediate partitions 6 arranged in the pVTt standard container to reach pVTt The purpose of rapid and uniform gas in the standard container;

[0032] (b) After the water circulation is carried out through the constant temperature water pipe 2 in the pVTt standard container and the water circulation connection pipe (5) in the constant temperature water jacket 1, the water in the constant temperature water jacket and the constant temperature water pipe is circulated, and the gas in the container is quickly exchanged with the outside world through the water circulation. heat exchange;

[0033] (c) When the tempe...

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Abstract

The present invention proposes a method and device for quickly balancing the temperature in a pVTt standard container. The constant temperature water is set outside the outer wall of the pVTt standard container, and the constant temperature water pipe passes through the pVTt standard container and is located in the middle of the pVTt standard container; the fan device at the two ends of the pVTt standard container; the temperature sensor is located inside the pVTt standard container; several intermediate partitions are arranged inside the pVTt standard container, the inner side of the intermediate partition is connected with the constant temperature water pipe, and the inner side of the intermediate partition The outer edge is in contact with the inner wall of the pVTt standard container. The present invention adopts the constant temperature water jacket instead of the constant temperature water tank, which occupies a small area and has low maintenance cost; a constant temperature water pipe with the same water source as the constant temperature water jacket is added in the container to balance the internal temperature of the container with the internal surface temperature of the container; Install a middle partition in the container to reduce the overall space in the container, form an air flow channel, accelerate the flow speed of the medium in the container, and avoid the dead zone caused by the vortex.

Description

technical field [0001] The invention belongs to the technical field of pVTt gas flow measurement, and in particular relates to a method and device for quickly balancing the temperature in a pVTt standard container, which is applied to the rapid temperature balance in the pVTt standard container. Background technique [0002] The pVTt method gas flow detection device is a high-precision primary flow standard device for measuring gas mass flow. Its main purpose is to verify critical flow Venturi nozzles and other high-precision flowmeters, as a part of the primary flow standard device It has the characteristics of high accuracy level and is the highest level detection device and equipment in the field of gas flowmeter detection. [0003] The standard container in the pVTt method gas flow detection device is one of the core components. At the beginning of the detection, it is required to measure the temperature and pressure of the medium in the standard container. Measure the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/32G01F25/00
Inventor 孙凤举王慧龙李东军焦鑫鑫张满正高炳涛钟山
Owner BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH