This project is for online detection of toxic, harmful, flammable and explosive gases in restricted space operations, such as tunnels, culverts, storage rooms and other restricted spaces, the air cannot circulate, and gradually accumulates toxic, harmful, flammable and explosive gases. In the process of limited space operation, the gas concentration at the site usually exceeds the standard by several times or even dozens of times, which can cause poisoning, suffocation, etc. of on-site operators.

Reference Standard:

GB4208-2008 "Shell Protection Level (IP Code)"

GB15322.1-2019 "Combustible Gas Detector Part 1: Point-type Combustible Gas Detector for Industrial and Commercial Use"

GB15322.3-2019 "Combustible Gas Detector Part 3: Industrial and Commercial Portable Combustible Gas Detector"

JJG695-2003 "Hydrogen Sulfide Gas Detector"

GB12358-2006 "Worksite Environmental Gas Detection Report" General Technical Requirements for Alarm Instruments

GB 3836.1-2010 General Requirements for Electrical Equipment for Explosive Gas Environments

GB 3836.2-2010 Electrical Equipment for Explosive Gas Environment Explosion-proof "d"

GB 3836.4-2010 "Electrical Equipment for Explosive Gas Environment Intrinsic Safety Type "i""

GB/T 17626.2-2018/IEC 61000-4-2:2008 Electromagnetic Compatibility Test and Measurement Technology Electrostatic Discharge Resistance Test

GB/T 17626.3-2016/IEC 61000-4-3:2010 Electromagnetic and Capacity Test and Measurement Technology Radio Frequency Electromagnetic Field Radiation Interference Resistance Test

GB 4824-2013 Industrial, Scientific and Medical (ISM) Radio Frequency Equipment Electromagnetic Harassment Characteristics Limits and Measurement Methods

System introduction:

System implementation function:

◆ Multi-parameter monitoring:

The gas concentration status, temperature and humidity, etc. of each measured point are centrally displayed on the regional monitoring host; and can be viewed through the app

◆ All-round early warning interconnection function:

1) On-site inspection The meter concentration exceeds the standard alarm, fall alarm, SOS call alarm, displacement alarm and other prompts, and send the alarm

alarm information to other surrounding devices;

2) Other surrounding devices receive early warning information and issue alarms;

3) Regional monitoring host Receive early warning information and issue an alarm;

4) Mobile app or remote cloud monitoring receives early warning information and issue an alarm;

◆ Data storage function:

The instrument and equipment can store the concentration value of the measured point regularly or the alarm trigger for data query. It is equipped to store 100,000 pieces of data as standard, and the machine can also display real-time curves;

◆ Position tracking Tracking:

GPS/Beidou real-time positioning, control the location of workers and instruments through the app or background, and improve the efficiency of emergency rescue;

◆ Cloud platform system:

Transmission through 4G network To the cloud platform, you can realize remote monitoring of on-site conditions, and make quick decisions according to environmental monitoring data, positioning and other information; you can view the history under the system. The history of the cloud platform is saved for 2 months by default, and the history can be downloaded and saved in time according to requirements;

◆ When the distance is long, add data relay routing, which can provide data transmission relay for other devices, with high added value;

Operation process:

Pre Check:

Before starting the operation in the restricted space, use the pump suction PTM600-S to sample and test the restricted space to detect oxygen, hydrogen sulfide and flammable gas in the closed space, and also to detect VOC volatile organic compounds in the closed space. After confirming the safety, the workers can enter the operation.

Enter:

In the operation, monitor the host outside the restricted space. Construction workers wear a portable detector PTM600-S operates and detects the gas concentration of the environment at any time. Outside guardians can view the monitoring data through mobile phones or iPads. If necessary, relay equipment can be added internally to extend the transmission distance.

Linkage warning:

Once the gas concentration of any detection point exceeds the standard, the instrument will alarm. Through the internal wireless network of the instrument, the alarm signal will be quickly transmitted to other instruments in the network, forming a linkage warning, and all workers can evacuate at the same time.

Remote monitoring:

All device measurement data and video images can be remotely to the background. The management center can remotely detect and deal with on-site accidents in a timely manner. So as to ensure the safe and orderly operation of cleaning operations.

System product list:

The system consists of regional monitoring host, regional monitoring relay, portable gas detector, mobile APP and cloud platform and other parts. The diagram is as follows:

System equipment overview:

Monitoring items:

Hydrogen sulfide, carbon monoxide, oxygenGas, combustible gas (gas can be customized according to on-site demand)

Location monitoring

Detection method:

Gas sampling method: pump suction

Detection principle: electrochemistry, catalytic combustion, infrared, etc.

Introduction to Yiyuntian Big Data Remote Monitoring Cloud Platform

In enterprise safe production, monitoring of major hazardous sources, exhaust gas Emission, scientific and technological research and development, environmental protection, fire safety and other aspects require uninterrupted collection and monitoring of flammable gases, toxic and harmful gases, oxygen, temperature and humidity, pressure, wind, dust, liquid level, flow and other information.And it has the functions of long-distance information transmission, continuous recording, accident warning, information storage, alarm output and control.

Yiyuntian Smart Cloud Monitoring Platform is an all-round platform designed and developed for industrial applications based on the Internet of Things. It breaks through the service bottleneck of the original system, infinitely increases the monitoring coverage and service expandability, and is based on big data analysis. The system can provide users with real-time online monitoring, permission management, on-site leakage source analysis, data change trends and statistics, history query, track tracking and other functional applications.

Monitoring point 1 23.... Through GPRS transmission to the cloud platform, administrators can remotely log in to the platform account to view the real-time concentration detection of points, which can be viewed by mobile phones or PC terminals;

System function: