Wind speed and wind volume measuring device based on static pressure principle

A measurement device and principle technology, which is applied in the direction of measuring fluid velocity by pressure difference, volume/mass flow generated by mechanical effects, and detecting fluid flow by measuring pressure difference, which can solve the problems of inaccurate testing and large resistance of the testing device itself

Inactive Publication Date: 2013-10-02
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The differential pressure flowmeter is a commonly used wind speed measurement device, but the current differential pressure flow device is installed on the field equipment because there is no long straight pipe

Method used

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  • Wind speed and wind volume measuring device based on static pressure principle
  • Wind speed and wind volume measuring device based on static pressure principle
  • Wind speed and wind volume measuring device based on static pressure principle

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Embodiment Construction

[0013] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.

[0014] Example: such as figure 1 As shown in -4, the wind speed and air volume measuring device based on the principle of static pressure includes a box body with open ends, one port is an air inlet, and the other port is an air outlet. 1 Completely cover the air inlet. The inner space of the box at the rear of the rectifying grille 1 is the airflow channel 7, and the pitot tubes 3 are evenly distributed in the airflow channel 7. The total pressure collecting pipe 2 is connected, the pitot tube full pressure collecting pipe 2 is connected with the total pressure collecting pipe 5, and the total pressure collecting pipe 5 is equipped with a total pressure transfer pipe 6, which transmits the total pressure of the airflow to the differential pressure testing device for ...

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Abstract

The invention relates to a wind speed and wind volume measuring device based on the static pressure principle. The wind speed and wind volume measuring device comprises a box body with two openings at two ends; one opening is an air inlet, and the other opening is an air outlet; a rectification grating is arranged and mounted in the air inlet; the inner box body behind the rectification grating serves as an air flow channel; pitot tubes are uniformly laid in the air flow channel; each pitot tube is only provided with an air inlet and a full-pressure port; the full-pressure port of each pitot tube is communicated with a pitot tube full-pressure gathering tube; the pitot tube full-pressure gathering tube is communicated with a full-pressure gathering tube; a full-pressure conveying tube is arranged and mounted on the full-pressure gathering tube; a static pressure testing tube is laid in the air flow channel. The wind speed and wind volume measuring device combines two testing methods, namely an air channel surface test and a pitot tube static pressure testing hole test, utilizes testing air channel static pressure on the air channel surface to replace the pitot tube static pressure, and reduces route I pitot tube static pressure testing pipeline, so as to reduce air channel throttling; the box body is used to replace part of existing air channel, thereby solving the deficiency of lack of straight tube for wind speed measuring device in a large wind box structure.

Description

technical field [0001] The invention relates to a wind speed and volume measuring device based on the principle of static pressure. Background technique [0002] The combustion adjustment of pulverized coal boilers in thermal power plants mainly depends on adjusting the opening of the small dampers of each secondary air to change the wind speed of the secondary air nozzles. Stable, the test conditions for wind speed and air volume are not good, the test accuracy is poor, and it cannot meet the needs of guiding operation adjustments. Refined combustion adjustment is beneficial to reduce boiler NO X Emissions and prevention of boiler coking are very important to today's strict environmental protection requirements. Accurate and reliable air velocity measurement is a must for fine combustion tuning. [0003] The differential pressure flowmeter is a commonly used wind speed measurement device, but the current differential pressure flow device is installed on the field equipm...

Claims

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Application Information

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IPC IPC(8): G01P5/16G01F1/36
Inventor 景雪晖
Owner STATE GRID CORP OF CHINA
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