CN219415132U

CN219415132U - Intelligent exhaust system capable of monitoring and controlling concentration of waste gas in laboratory in real time

Info

Publication number: CN219415132U
Application number: CN202223171878.0U
Authority: CN
Inventors: 杜青平; 乐家奕; 张蔚华; 王菁彤; 罗清宝; 黄文涛; 黄思敏
Original assignee: Guangdong University of Technology
Current assignee: Guangdong University of Technology
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-07-25
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses an intelligent exhaust system capable of monitoring and controlling the concentration of waste gas in a laboratory in real time, which relates to the technical field of exhaust systems and adopts the technical scheme that: the automatic exhaust system comprises a laboratory, wherein a plurality of exhaust gas concentration sensors are fixedly arranged on the inner wall of the laboratory and used for identifying exhaust gas generated in the laboratory, an exhaust manifold is fixedly arranged on the top of the laboratory and fixedly connected with an exhaust main pipe, and the exhaust manifold is used for conveying exhaust gas inside the laboratory into the exhaust main pipe.

Description

Intelligent exhaust system capable of monitoring and controlling concentration of waste gas in laboratory in real time

Technical Field

The utility model relates to the technical field of exhaust systems, in particular to an intelligent exhaust system capable of monitoring and controlling the concentration of waste gas in a laboratory in real time.

Background

The exhaust system of the existing laboratory is basically controlled to be opened and closed by hand, but the perception of people is inaccurate and delayed, so that when people feel peculiar smell in the laboratory, the concentration of waste gas is far beyond the emission standard, and polluted gas is inhaled, so that the harm to human health is generated; and if the concentration of the waste gas is reduced, but the exhaust system is not closed in time, the waste of the energy consumption of the indoor air conditioner and the energy consumption of exhaust can be caused.

The prior art has the following defects: the existing laboratory exhaust system mainly controls manually, actively perceives and starts a ventilation device through workers, inconvenient intelligent real-time detection of VOC waste gas concentration in experiments is achieved, automatic exhaust ventilation is achieved, physical health of operators in a laboratory is not guaranteed, personnel can be possibly injured, meanwhile, waste of certain energy sources can be caused if ventilation devices such as an air conditioner are started for a long time for ventilation, energy conservation and environmental protection are not facilitated, and use cost is increased.

Therefore, it is necessary to invent an intelligent exhaust system capable of monitoring and controlling the concentration of exhaust gas in a laboratory in real time.

Disclosure of Invention

Therefore, the intelligent exhaust system capable of monitoring and controlling the concentration of the waste gas in the laboratory in real time is provided, and the VOC concentration sensor is arranged to conveniently detect the laboratory waste gas generated in the laboratory in real time, so that the laboratory waste gas concentration signal identified by the waste gas concentration sensor is transmitted to the variable air valve, the VCO waste gas in the laboratory is conveniently and automatically controlled to be discharged, and the safety of operators in the laboratory is maintained, so that the problems in the background technology are solved.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides an intelligent exhaust system that can real-time supervision control laboratory waste gas concentration, includes the laboratory, the laboratory is equipped with a plurality of, laboratory inner wall fixed mounting waste gas concentration sensor, waste gas concentration sensor is arranged in discernment laboratory and produces waste gas, laboratory top fixed mounting exhaust manifold, a plurality of exhaust manifold top fixed connection is responsible for airing exhaust, exhaust manifold is arranged in carrying laboratory inside waste gas to the responsible for airing exhaust, the end fixed mounting glass steel centrifugal fan that is responsible for airing exhaust, glass steel centrifugal fan top fixed connection blast pipe.

Preferably, the variable air volume valves are fixedly installed on the outer walls of the exhaust manifolds, the output ends of the exhaust gas concentration sensors are electrically connected with the first signal wire, one end of the signal wire is electrically connected with the variable air volume valve, and the exhaust gas concentration sensors control the variable air volume valve to adjust the opening degree by identifying the concentration of the exhaust gas in a laboratory.

Preferably, a static pressure sensor is fixedly arranged on the inner wall of the main exhaust pipe, and the static pressure sensor is used for detecting the static pressure value in the main exhaust pipe.

Preferably, the output end of the static pressure sensor is electrically connected with the second signal wire, the two end parts of the signal wire are electrically connected with the fan frequency converter, and the output end of the fan frequency converter is electrically connected with the third signal wire.

Preferably, the three ends of the signal line are electrically connected with the glass fiber reinforced plastic centrifugal fan, and the fan frequency converter is used for controlling the frequency conversion of the glass fiber reinforced plastic centrifugal fan to adjust the wind speed.

Preferably, the electromagnetic valve is fixedly arranged on the outer wall of the exhaust main pipe and used for controlling the on-off of the exhaust main pipe, and the electromagnetic valve is positioned between the static pressure sensor and the glass fiber reinforced plastic centrifugal fan.

The beneficial effects of the utility model are as follows:

1. the VOC concentration sensor is arranged to conveniently detect experimental waste gas generated in a laboratory in real time, so that the experimental waste gas concentration signal in the laboratory identified by the waste gas concentration sensor is transmitted to the variable air volume valve, the opening degree of the variable air volume valve is dynamically controlled according to the waste gas concentration in the laboratory, the exhaust manifold is arranged to conveniently guide the waste gas in the laboratory into the exhaust main pipe, and the exhaust main pipe is arranged to conveniently connect with the glass fiber reinforced plastic centrifugal fan, so that the VCO waste gas in the laboratory is conveniently and automatically discharged, and the safety of operators in the experiment is maintained;

2. the variable air volume valve is convenient to adjust the opening of the variable air volume valve according to the exhaust gas concentration condition in a laboratory detected by the exhaust gas concentration sensor, so that the speed of exhaust gas discharged in an exhaust manifold passage can be conveniently and adaptively adjusted, the glass fiber reinforced plastic centrifugal fan can be conveniently and automatically opened and closed, the energy consumption can be conveniently saved, and the economical efficiency of equipment use can be improved.

Drawings

FIG. 1 is a schematic diagram of a front view structure provided by the present utility model;

fig. 2 is a flow chart of the operation provided by the present utility model.

In the figure: laboratory 1, exhaust gas concentration sensor 2, signal line one 21, exhaust manifold 3, variable air volume valve 4, exhaust main pipe 5, static pressure sensor 6, signal line two 61, solenoid valve 7, glass steel centrifugal fan 8, fan converter 9, signal line three 91.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Referring to fig. 1-2, the utility model provides an intelligent exhaust system capable of monitoring and controlling the concentration of exhaust gas in a laboratory in real time, and in order to achieve the above purpose, the utility model provides the following technical scheme: the intelligent exhaust system capable of monitoring and controlling the concentration of the exhaust gas in the laboratory in real time comprises a laboratory 1, wherein the laboratory 1 is provided with a plurality of exhaust gas concentration sensors 2 fixedly arranged on the inner wall of the laboratory 1, the exhaust gas concentration sensors 2 are used for identifying the exhaust gas generated in the laboratory 1, an exhaust manifold 3 is fixedly arranged on the top of the laboratory 1, the tops of the exhaust manifolds 3 are fixedly connected with an exhaust main pipe 5, the exhaust manifold 3 is used for conveying the exhaust gas in the laboratory 1 into the exhaust main pipe 5, a glass fiber reinforced plastic centrifugal fan 8 is fixedly arranged at the end part of the exhaust main pipe 5, the top of the glass fiber reinforced plastic centrifugal fan 8 is fixedly connected with an exhaust pipe (not labeled in the drawing), in particular, the laboratory 1 is a place for conveniently carrying out the operation of researching chemical related experiments, a plurality of groups of laboratories 1 are simultaneously arranged, the intelligent exhaust system capable of conveniently carrying out a plurality of experiments simultaneously, the exhaust gas concentration in the laboratory is beneficial to saving cost, simultaneously or independently exhausting waste gas to one laboratory 1 or a plurality of laboratories 1, improving the practicability and energy-saving and environment-friendly performance of equipment use, wherein the waste gas concentration sensor 2 is a VOC concentration sensor, the VOC concentration sensor is set to be SKA/NE-301, the VOC concentration sensor is suitable for the VOC gas concentration and leakage of volatile organic matters in various environments and special environments, the on-line detection and on-site audible and visual alarm are realized, the early warning function is realized for the operation safety of dangerous sites, the instrument adopts the imported electrochemical sensor and microcontroller technology, has the advantages of stable signal, high precision, good repeatability and the like, is suitable for various dangerous sites, is compatible with various controllers, control systems such as a PLC, a DCS and the like, can realize on-site alarm and remote monitoring simultaneously, the experiment waste gas that produces in the laboratory 1 is convenient to detect in real time through setting up VOC concentration sensor to the experiment waste gas concentration signal transmission in laboratory 1 that discerned through exhaust gas concentration sensor 2 is to become blast volume valve 4, thereby according to the aperture of waste gas concentration dynamic control blast volume valve 4 in laboratory 1, have the effect of conveniently connecting glass steel centrifugal fan 8 through setting up the main pipe that airs exhaust 5 in conveniently leading-in the air-out being responsible for 5 with the waste gas in the laboratory 1 through setting up the air-out, thereby conveniently regard as the power supply through glass steel centrifugal fan 8, the waste gas that produces in the extraction laboratory 1, thereby reduce waste gas content in the laboratory 1, have the effect of conveniently discharging waste gas through setting up the blast pipe.

The variable air volume valve 4 is fixedly installed on the outer wall of the exhaust manifold 3, the output end of the exhaust gas concentration sensor 2 is electrically connected with the first signal line 21, the end part of the first signal line 21 is electrically connected with the variable air volume valve 4, the exhaust gas concentration sensor 2 controls the variable air volume valve 4 to adjust the opening degree by identifying the exhaust gas concentration in the laboratory 1, the variable air volume valve 4 is a pressure-independent variable air volume valve, the variable air volume valve 4 is arranged to conveniently adjust the opening degree of the variable air volume valve 4 according to the exhaust gas concentration condition in the laboratory 1 detected by the exhaust gas concentration sensor 2, so that the exhaust gas speed in a channel of the exhaust manifold 3 can be conveniently adjusted, and the glass fiber reinforced plastic centrifugal fan 8 has the effect of conveniently extracting the exhaust gas in the laboratory 1, so that the exhaust gas concentration value in the laboratory 1 is reduced to be within a safety value.

The static pressure sensor 6 is fixedly arranged on the inner wall of the main exhaust pipe 5, the static pressure sensor 6 is used for detecting the static pressure value in the main exhaust pipe 5, the output end of the static pressure sensor 6 is electrically connected with the second signal wire 61, the end of the second signal wire 61 is electrically connected with the fan frequency converter 9, the output end of the fan frequency converter 9 is electrically connected with the third signal wire 91, the end of the third signal wire 91 is electrically connected with the glass fiber reinforced plastic centrifugal fan 8, the fan frequency converter 9 is used for controlling the variable frequency regulation wind speed of the glass fiber reinforced plastic centrifugal fan 8, specifically, the static pressure sensor 6 is PTC201-1, the static pressure sensor 6 is arranged to conveniently detect the static pressure of a pipeline in the main exhaust pipe 5, the total wind volume of the system is regulated according to the static pressure value, so that the total wind volume of the system is consistent with the total wind volume of the laboratory, the glass fiber reinforced plastic centrifugal fan 8 is automatically started, the total wind volume of any laboratory 1 is automatically triggered, the system automatically operates according to the total wind volume of each laboratory 1, and when the waste gas concentration of all laboratory 1 is reduced to the health index, the system automatically stops running, the fan frequency converter 9 is a special frequency converter for customizing the various wind volume of the glass fiber reinforced plastic centrifugal fans, the system is changed, the wind volume is adjusted, and the wind volume is changed, and the wind speed is pumped by adopting the variable frequency converter control device, and the glass fiber reinforced plastic centrifugal fan 8 is changed, and the wind speed is suitable for the wind speed.

The electromagnetic valve 7 is fixedly arranged on the outer wall of the air exhaust main pipe 5, the electromagnetic valve 7 is used for controlling the on-off of the air exhaust main pipe 5, the electromagnetic valve 7 is positioned between the static pressure sensor 6 and the glass fiber reinforced plastic centrifugal fan 8, and particularly, the speed of exhaust gas in the air exhaust main pipe 5 is conveniently controlled by arranging the electromagnetic valve 7.

The application process of the utility model is as follows: when a person skilled in the art uses the device, the VCO waste gas concentration in each laboratory 1 is detected through the waste gas concentration sensor 2, when the VCO waste gas concentration in the laboratory 1 reaches a preset value, a VCO concentration signal is transmitted to the variable air valve 4 through the waste gas concentration sensor 2 to adjust the opening degree, the glass fiber reinforced plastic centrifugal fan 8 is automatically driven to work, meanwhile, the static pressure value of a pipeline in the air exhaust main pipe 5 is detected in real time through the static pressure sensor 6, the detection signal is transmitted to the fan frequency converter 9 in real time through the static pressure sensor 6, the glass fiber reinforced plastic centrifugal fan 8 is controlled to automatically convert frequency through the fan frequency converter 9, the rotation speed of the glass fiber reinforced plastic centrifugal fan 8 is adjusted, and when the VCO waste gas concentration detected by the waste gas concentration sensor 2 is lower than a safety value, the glass fiber reinforced plastic centrifugal fan 8 is stopped, so that the VCO waste gas in the laboratory 1 is automatically discharged, and the waste gas content in the laboratory 1 is processed within a safety range.

The above description is only of the preferred embodiments of the present utility model, and any person skilled in the art may modify the present utility model or make modifications to the present utility model equivalent thereto using the technical solutions described above. Therefore, any simple modification or equivalent made according to the technical solution of the present utility model falls within the scope of the protection claimed by the present utility model.

Claims

1. The utility model provides an intelligent exhaust system that can real-time supervision control waste gas concentration in laboratory, includes laboratory (1), laboratory (1) are equipped with a plurality of, laboratory (1) inner wall fixed mounting waste gas concentration sensor (2), its characterized in that: the exhaust gas concentration sensor (2) is used for identifying exhaust gas generated in a laboratory (1), an exhaust manifold (3) is fixedly installed at the top of the laboratory (1), a plurality of exhaust manifolds (3) are fixedly connected with an exhaust main pipe (5), the exhaust manifolds (3) are used for conveying exhaust gas inside the laboratory (1) into the exhaust main pipe (5), a glass fiber reinforced plastic centrifugal fan (8) is fixedly installed at the end part of the exhaust main pipe (5), and an exhaust pipe is fixedly connected with the top of the glass fiber reinforced plastic centrifugal fan (8).

2. The intelligent exhaust system capable of monitoring and controlling the concentration of the exhaust gas in the laboratory according to claim 1, wherein a plurality of variable air volume valves (4) are fixedly installed on the outer walls of the exhaust manifolds (3), the output ends of the exhaust gas concentration sensors (2) are electrically connected with a first signal wire (21), the end parts of the first signal wire (21) are electrically connected with the variable air volume valves (4), and the exhaust gas concentration sensors (2) control the variable air volume valves (4) to adjust the opening degree by identifying the concentration of the exhaust gas in the laboratory (1).

3. The intelligent exhaust system capable of monitoring and controlling the concentration of the exhaust gas in the laboratory in real time according to claim 1, wherein a static pressure sensor (6) is fixedly arranged on the inner wall of the exhaust main pipe (5), and the static pressure sensor (6) is used for detecting the static pressure value in the exhaust main pipe (5).

4. The intelligent exhaust system capable of monitoring and controlling the concentration of the exhaust gas in the laboratory in real time according to claim 3, wherein the output end of the static pressure sensor (6) is electrically connected with a second signal line (61), the end part of the second signal line (61) is electrically connected with a fan frequency converter (9), and the output end of the fan frequency converter (9) is electrically connected with a third signal line (91).

5. The intelligent exhaust system capable of monitoring and controlling the concentration of the exhaust gas in the laboratory in real time according to claim 4, wherein the end part of the signal wire III (91) is electrically connected with the glass fiber reinforced plastic centrifugal fan (8), and the fan frequency converter (9) is used for controlling the glass fiber reinforced plastic centrifugal fan (8) to adjust the frequency conversion and the wind speed.

6. The intelligent exhaust system capable of monitoring and controlling the concentration of the exhaust gas in the laboratory in real time according to claim 1, wherein an electromagnetic valve (7) is fixedly arranged on the outer wall of the exhaust main pipe (5), the electromagnetic valve (7) is used for controlling the on-off of the exhaust main pipe (5), and the electromagnetic valve (7) is positioned between the static pressure sensor (6) and the glass fiber reinforced plastic centrifugal fan (8).