CN202928928U

CN202928928U - PM2.5 monitor with aerosol humidity controller

Info

Publication number: CN202928928U
Application number: CN 201220643499
Authority: CN
Inventors: 陈建设; 吕长彬
Original assignee: Anhui Landun Photoelectron Co Ltd
Current assignee: Anhui Landun Photoelectron Co Ltd
Priority date: 2012-11-29
Filing date: 2012-11-29
Publication date: 2013-05-08
Anticipated expiration: 2022-11-29

Abstract

The utility model discloses a PM2.5 monitor with an aerosol humidity controller. The PM2.5 monitor with the aerosol humidity controller comprises a cutter (1) and a measuring unit (8), and is characterized in that an aerosol humidity controller (7) is in series connected on a channel at the inlet end of the measuring unit (8), wherein the aerosol humidity controller is used for carrying out dehumidification drying to the gas entering the measuring unit (8). According to the PM2.5 monitor disclosed by the utility model, the air does not need to be heated up and dried, thereby avoiding volatilization of matters and ensuring the measuring accuracy.

Description

The PM2.5 monitor of gasoloid humidity controller is housed

Technical field

The utility model relates to the PM2.5 monitor, especially PM2.5 monitor gasoloid humidity conditioner.

Background technology

The groundwork principle of oscillating balance method PM2.5 atmosphere particulate matter monitoring instrument is the concentration of utilizing taper oscillating tube frequency change that the mass accumulation of particle causes to convert Atmospheric particulates PM2.5.PM2.5 Atmospheric particulates complicated component, noxious material in surrounding air is gathered in this substantially, and directly being sucked lung by the mankind less than the fine particle of 2.5um, the particle diameter enters blood circulation, accurately PM2.5 concentration is measured obviously extremely importantly, directly concerned the mankind's health and existence.In the oscillating balance method atmosphere particulate matter monitoring instrument process that the content of PM2.5 is monitored in to surrounding air, complicacy due to PM2.5 fine particulates constituent, particle on the sampling membrane of accumulation can cause the loss of part volatility and half volatile material due to the high-temperature heating dehumidification process of vibration main body, thereby affects the PM2.5 concentration accuracy of actual measurement.

The utility model content

The purpose of this utility model is exactly to solve the PM2.5 monitor to cause the loss of part volatility and half volatile material because of the high-temperature heating dehumidification process, affects the problem of the PM2.5 concentration accuracy of actual measurement.

The technical solution adopted in the utility model is: the PM2.5 monitor that the gasoloid humidity controller is housed, it comprises cutter and measuring unit, it is characterized in that being serially connected with the gasoloid humidity controller on described measuring unit inlet end passage, the gas that enters measuring unit is carried out removal moisture drying.

Described gasoloid humidity controller comprises condensation cycle pipe and refrigeration machine, and described condensation cycle pipe and refrigeration machine pipe connect and compose refrigeration cycle.

The exit of described condensation cycle pipe is serially connected with the sample gas spout member, in the sample gas spout member, temperature sensor is housed, and temperature signal is transferred to refrigeration machine, thereby temperature control parameter is automatically adjusted.

The utility model beneficial effect is: sample gas enters the condensation cycle pipe by the sampling air intake opening, gas can produce condensate water when meeting low temperature environment, condensate water is along the landing of condensation cycle device inner tubal wall, thereby the gas that passes through is dried, and the gas after being dried is discharged by the sample gas outlet, then enters into measuring unit, because gas becomes dry, do not need to carry out heating and dehumidification, therefore just do not have the devolatilization of material yet, thereby make monitoring result accurate.

Description of drawings

Fig. 1 is the utility model schematic diagram.

Fig. 2 is the enlarged diagram of gasoloid humidity controller in Fig. 1.

Embodiment

Below in conjunction with description of drawings, the utility model is further described.

As shown in Figure 1, the PM2.5 monitor of gasoloid humidity controller is housed, it comprises cutter 1, outdoor temperature sensor 2 and measuring unit 8, cutter 1, outdoor temperature sensor 2 are fixed on station roof 4 by tripod 3, outdoor temperature sensor 2 is transferred to control box 11 by outdoor temperature sensor line 5 with signal, be serially connected with gasoloid humidity controller 7 on measuring unit 8 inlet end passages, the gas that is entered measuring unit 8 by sampling entrance 13 is carried out removal moisture drying.Measuring unit 8 is connected with controller with signal wire 10 by the sampling tracheae.In Fig. 16 is secondary flow buret road, and 9 is vacuum air pump.

As shown in Figure 2, the gasoloid humidity controller of the present embodiment comprises condensation cycle pipe 18 and refrigeration machine 12, and condensation cycle pipe 18 connects and composes refrigeration cycle with refrigeration machine 12 pipes.The exit of condensation cycle pipe 18 is serially connected with sample gas spout member 20, in sample gas spout member 20, temperature sensor is housed, and temperature signal is transferred to refrigeration machine, thereby temperature control parameter is automatically adjusted.

As shown in Figure 2, in Fig. 2,14 is gasoloid humidity controller sense line, and 15 is the condensed water discharge pipe road, and 16 is the liquid input tube road, and 17 is the liquid output pipe road.14,15,16,17 use thermal insulation casing 19 parcels.

The utility model is work like this, surrounding air is entered by PM2.5 cutter 1 and the particle size is separated, PM2.5 sample gas after cut imports the condensation cycle pipe of gasoloid gasoloid humidity controller 7 into through sample lines, discharged the sample gas that has satisfied humidity requirement by the condensation cycle pipeline, enter apparatus measures unit 8 and carry out the particle mass measurement, measured gas is connected to control box 11 via sampling tracheae and signal wire 10, in control box 11 inside, the sample gas velocity is controlled in real time.Vacuum air pump 9 provides driving force for the whole system gas circuit.

Claims

1. the PM2.5 monitor of gasoloid humidity controller is housed, it comprises cutter (1) and measuring unit (8), it is characterized in that being serially connected with gasoloid humidity controller (7) on described measuring unit (8) inlet end passage, the gas that enters measuring unit (8) is carried out removal moisture drying.

2. the PM2.5 monitor that the gasoloid humidity controller is housed according to claim 1, it is characterized in that described gasoloid humidity controller comprises condensation cycle pipe (18) and refrigeration machine (12), described condensation cycle pipe (18) connects and composes refrigeration cycle with refrigeration machine (12) pipe.

3. the PM2.5 monitor that the gasoloid humidity controller is housed according to claim 1 and 2, the exit that it is characterized in that described condensation cycle pipe (18) is serially connected with sample gas spout member (20), the sample gas spout member is equipped with temperature sensor in (20), temperature signal is transferred to refrigeration machine (12), thereby temperature control parameter is automatically adjusted.