Exhaust flow readable type anti-clogging pulverized coal constant-speed sampling system and working method

A technology of pumping air flow and constant velocity sampling, which is applied in the direction of sampling, sampling devices, measuring devices, etc., can solve the problems of difficult control and easy blockage of the measuring device in the sampling state, so as to prevent blockage, solve the difficult control of the sampling state, and ensure the speed measurement normal effect

Pending Publication Date: 2020-12-22
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention is to completely solve the problem that the measurement device is easy to block and the sampling state is difficult to control, and provides a readable air extraction flow type anti-blocking type coal powder constant velocity sampling system

Method used

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  • Exhaust flow readable type anti-clogging pulverized coal constant-speed sampling system and working method
  • Exhaust flow readable type anti-clogging pulverized coal constant-speed sampling system and working method
  • Exhaust flow readable type anti-clogging pulverized coal constant-speed sampling system and working method

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0026] see Figure 1 to Figure 3 , an anti-blocking pulverized coal isokinetic sampling system with readable air extraction flow rate, comprising a pulverized coal sampling gun 3, an anemometer 6, a primary pulverized coal separator 7, a pulverized coal secondary separator 8, and an air extraction flowmeter 9. No. 1 valve 10, exhaust fan 12, No. 1 flow meter 13, No. 1 flow pipe 14, No. 4 flow pipe 21, No. 2 flow meter 15, No. 2 flow pipe 19, three No. flow pipe 20 and flow fan 18; flow fan 18 connects No. 1 flow meter 13 and No. 2 flow flow meter 15 through No. 4 flow pipe 21 and No. 3 flow pipe 20 respectively, and No. Flow flow meter 13 and No. 2 flow flow meter 15 are respectively connected to No. 1 through-flow...

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Abstract

The invention discloses an exhaust flow readable type anti-clogging pulverized coal constant-speed sampling system and a working method, and belongs to the field of coal pulverizing system test measurement. The system comprises a pulverized coal sampling gun, a wind speed measuring instrument, a first-stage pulverized coal separator, a second-stage pulverized coal separator, an air exhaust flowmeter, a first valve, an air exhaust fan, a first through-flow flowmeter, a first through-flow pipeline, a fourth through-flow pipeline, a second through-flow flowmeter, a second through-flow pipeline, athird through-flow pipeline and a through-flow fan. Due to the adoption of measures such as through-flow media and readable exhaust flow, the problems that a pressure measuring hole of an existing sampling device is easy to block and the sampling state is not easy to control can be thoroughly solved.

Description

technical field [0001] The invention relates to an anti-clogging pulverized coal constant-speed sampling system and a working method with a readable air extraction flow rate, belonging to the field of test and measurement of pulverizing systems. Background technique [0002] Coal-fired power plant boilers are basically pulverized coal boilers, and the pulverizing system is an important auxiliary equipment for the boiler. The safety and economy of boiler operation are closely related to the operating parameters of the pulverizing system. An important parameter for evaluating the pulverizing system is the fineness and uniformity index of pulverized coal, so how to carry out isokinetic sampling to obtain qualified pulverized coal for laboratory analysis is extremely important. [0003] The current national standard stipulates that the pressure measuring hole is easy to be blocked during use, and there is no effective means to judge whether it is blocked during the sampling proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/14
CPCG01N1/14G01N2001/1006
Inventor 黄建平胡志勇陈炜聪陈广伟金李唐秀能
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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