35results about How to "Real-time monitoring of concentration changes" patented technology

The invention discloses an early-warning anti-blocking method for a column-type rakeless paste thickener, comprising the following steps: (1) determining the upper limit value of the slurry conveying concentration; (2) collecting the pressure values ​​at the lower end and the upper end of the thickener discharge well ; (3) Establish the relationship between the pressure gauge difference and the slurry concentration in the thickener discharge well; (4) Real-time monitoring and early warning type anti-blocking of the thickener underflow concentration; Each high-pressure water pressure pipeline is provided with an electric control valve, and the electric control valve is connected with the PLC control device; the pressure value measured by the first pressure gauge and the second pressure gauge is converted to obtain the real-time information of the slurry in the discharge well of the thickener. Concentration C x ;The PLC control device compares the pulp concentration C x with the set upper limit of concentration C 上 , to determine whether to issue an early warning or output a signal for the opening and closing of the high-pressure water valve. The present invention can realize real-time monitoring of the concentration of the thickener discharge, has strong operability, and can effectively avoid blockage.

A method for monitoring particulate matter in the atmospheric environment of highway engineering, characterized in that a monitoring device for particulate matter (PM2.5) in the atmospheric environment of highway engineering is used to monitor PM2.5 in the atmospheric environment of highway engineering, and the device includes a dust equipment chassis (1), a light receiving element (2), receiving plate (3), scattering plate (4), light emitting element (5), first exhaust pipeline (6), second exhaust pipeline (7), first fan motor (8), The second fan motor (9), the first exhaust port (10), the second exhaust port (11), the first exhaust channel (12), the second exhaust channel (13), the first air inlet ( 14), the second air inlet (15), the first gas collection port (16), the air supply channel (17), the second gas collection port (18), the gas distribution channel (19), and the particle retainer (20). The method can measure the PM2.5 concentration independently, and can also measure the PM2.5 concentration in a vehicle-mounted mobile type.

The invention discloses a highway engineering atmospheric-environment carbon-dioxide monitoring method. The method is characterized in that a carbon-dioxide monitoring device is employed for highway engineering atmospheric-environment carbon-dioxide monitoring; The device comprises an air collection port (1), an air inlet (2), a carbon-dioxide equipment box (3), a light receiving element (4), a first air exhausting port (5), a first fan motor (6), a first air exhausting pipeline (7), a second air exhausting pipeline (8), a second fan motor (9), a second air exhausting port (10), an infrared illuminating element (11), an absorbing plate (12), a first air exhausting passage (13), a second air exhausting passage (14), a data collection storage system and a power supply system; and the first air exhausting pipeline (7) has an automatic filtering function. The method can realize a self-cleaning function of equipment under a condition of heavy carbon-dioxide pollution. Independent measurement of carbon-dioxide concentration can be carried out, and vehicle-mounted-mobile-type measurement of the carbon-dioxide concentration can also be carried out.

The invention relates to a column plate temperature based distillation process global concentration online observer and method. The observer comprises temperature measuring devices, a local temperature measuring point offline selection analyzing module, a data storage device and a global concentration online observer. The local temperature measuring point offline selection analyzing module and thedata storage device are connected with the temperature measuring devices which are connected with a distillation column, and the global concentration online observer is connected with the data storage device. The local temperature measuring point offline selection analyzing module comprises a concentration distribution description module for generating analysis data, a concentration / temperature conversion module for converting concentration data into temperature data, a sensitivity matrix analysis module for first measuring point selection and a to-be-selected column plate correlation analysis module for selecting measuring points not exceeding concentration distribution parameter quantity. By local temperature measuring point selection analysis of the distillation column, online observation of material concentrations of all column plates can be realized through mounting of temperature measuring devices at limited column plate positions, and high accuracy in global concentration observation, small mounting quantity of the measuring devices and low cost are realized.

The invention provides a method for monitoring atmospheric environment dust in the engineering construction. The method is characterized by adopting a dust monitoring device for monitoring the atmospheric environment dust in engineering construction. The device comprises a dust equipment case (1), an acceptance element (2), a receiving plate (3), a scattering plate (4), a light emission element (5), a first exhaust pipeline (6), a second exhaust pipeline (7), a first fan motor (8), a second fan motor (9), a first exhaust opening (10), a second exhaust opening (11), a first exhaust passage (12), a second exhaust passage (13), a first air inlet (14), a second air inlet (15), an air production opening (16), a data acquisition and storage system and a power supply system. The method is simple,has high measurement precision, and can achieve a self-cleaning function of equipment under the condition of dust heavy pollution, and can be used for independently measuring the dust concentration and performing vehicle-mounted mobile dust concentration measurement.

A monitoring device for particulate matter in the atmospheric environment used in engineering construction, characterized in that the device includes a dust equipment chassis (1), a light-receiving element (2), a receiving plate (3), a scattering plate (4), and a light-emitting element ( 5), the first exhaust pipeline (6), the second exhaust pipeline (7), the first fan motor (8), the second fan motor (9), the first exhaust port (10), the second Exhaust port (11), first exhaust channel (12), second exhaust channel (13), first air inlet (14), second air inlet (15), first gas extraction port (16) , the air supply channel (17), the second gas extraction port (18), the gas distribution channel (19), the particle retainer (20), the data acquisition storage system and the power supply system. The instrument can meet the self-cleaning function of the equipment under the condition of PM2.5 heavy pollution. The concentration of PM2.5 can be measured independently, and the concentration of PM2.5 can also be measured on-board.

The invention discloses a vertical flow constructed wetland sewage treatment system and a method thereof for real-time control and management of nitrification and denitrification denitrification processes. The treatment system includes a vertical flow constructed wetland subsystem and a dynamic data acquisition subsystem; the vertical flow The constructed wetland subsystem includes wetland matrix and wetland plants; the vertical flow constructed wetland subsystem is provided with an adjustable water outlet connected to the bottom and higher than the bottom; the dynamic data collection subsystem includes The detection part in the middle of the matrix and the analysis part electrically connected with the detection part. The vertical flow constructed wetland sewage treatment system provided by the present invention can monitor the NH in the vertical flow constructed wetland system in real time 4 + -N, NO 3 ‑ ‑N concentration changes and water quality conditions such as DO, pH, and Eh can be used to adjust and respond to the reaction situation in a timely manner based on the basis when treating sewage with complex and variable water quality, improve the removal efficiency of nitrogen pollutants, and maintain The stability of system operation.

The invention discloses a Raman-fluorescent dual-mode nano-probe for detecting calcium ions in vitro and in living cells or imaging. The detection method is based on the "on-off" conversion of surface-enhanced Raman scattering and fluorescence resonance energy transfer, by assembling Ca on nano-venus 2+ The specific enzyme chain and its partially complementary substrate chain modified with fluorescent groups construct dual-mode nanoprobes. This method combines the advantages of SERS ultra-sensitivity and fluorescence visualization, has good specificity and sensitivity, and has good versatility in various cell lines.

The invention discloses a harmful gas blowing system applied to spud shoes of offshore platforms, comprising: an air delivery system, a gas delivery pipeline system, a monitoring device and a PLC controller, and the gas delivery pipeline system is used to deliver compressed gas Go to various places inside the spud can of the offshore platform to increase the air replacement rate inside the spud can of the offshore platform, and the PLC controller is used to control the working state of the air conveying system according to the concentration of harmful gases inside the spud can of the offshore platform. The invention has simple structure, easy installation, can realize intelligent operation, and has great economic value and social benefit.