RU2163011C1 - Measurement station to test quality of natural water - Google Patents

Abstract

FIELD: automatic inspection means. SUBSTANCE: invention can be used for hydrochemical analysis as part of systems monitoring natural environment. Measurement station for automatic test of quality of natural water has water sampler, measurement devices, communication equipment and controlling unit. Water sampler is fabricated in the form of stationary pipe-line located on bottom of water object over entire width of controlled range and fitted with system of branch pipes of different length. Measurement devices, controlling unit and communication equipment are positioned in coastal isothermal container equipped with autonomous power supply source. Automatic control controller is used as controlling unit. Measurement station tests water in any part of water object automatically independent of season and meteorological conditions. EFFECT: automatic hydrochemical analysis of natural water in any part of water object. 1 dwg

Description

 The invention relates to automatic control means and can be used for hydrochemical analysis as part of environmental monitoring systems.

 Known devices [1] that automatically control individual indicators of water quality.

 However, such devices in their metrological characteristics (measurement ranges, detection limits, errors, etc.) and operational properties (power supply, environmental protection, etc.) are intended for operation in a production environment.

 Known measuring systems located directly in aqueous media [2] and intended for automatic monitoring of the state of natural waters.

 Their main disadvantages are the impossibility of using in their composition most of the standard devices for water quality control and standard methods of chemical analysis, the difficulty of operation during flood periods or in the presence of ice cover, as well as the orientation mainly on hydrological and integral indicators.

 Closest to the proposed invention is the marine environmental complex "Water Area" [3], which includes a water sampling device, measuring instruments, a control device and communication equipment.

 The main disadvantages of this complex are the limited capabilities of the base vessel for examining water bodies, manual control of the complex and poor reproducibility of sampling conditions during repeated observations.

 The proposed invention solves the problem of monitoring the waters of any part of water bodies in automatic mode regardless of the time of year and weather conditions, as well as increasing the representativeness of the data due to the rigid configuration of the water sampling device.

 To achieve this technical result, as part of a measuring station for monitoring the quality of natural waters, containing a water sampling device, measuring instruments, a control device and communication equipment, a water sampling device is made in the form of a stationary pipeline located at the bottom of a water body across the entire width of the controlled site and equipped with a system of nozzles of different lengths, measuring instruments, a control device and communication equipment are located in a coastal insulated container, equipped nnom autonomous power supply source, and as a control device used in the controller of automatic control.

 Distinctive features of the proposed measuring station from the prototype are the implementation of a water sampling device in the form of a stationary pipeline along the entire width of the controlled alignment with a system of nozzles of different lengths, the placement of measuring instruments, a control device and communication equipment in an isothermal container equipped with an autonomous power source, and use as control device of the controller of automatic control.

 Due to the presence of these signs, the influence on fluctuations in the properties and composition of water due to sample averaging and the analysis error associated with the mismatch of the sampling points during repeated monitoring is excluded, automatic and autonomous operation of the post is provided regardless of the time of year, time of day, weather conditions, and the state of power networks, and the use of an automatic controller instead of a PC controlled by an operator allows the use of standard laboratory devices and analysis techniques, which reduces the cost of Rata on metrological support work of fasting.

 The drawing shows a block diagram of the proposed stationary coastal post for automatic quality control of natural waters, where it is indicated: 1 - control target of a water body; 2 - pipeline; 3 - pipe system; 4 - pump; 5 - flow-through analytical cell; 6 - measuring instruments; 7 - controller automatic control; 8 - communication equipment; 9 - power source; 10 - isothermal container.

 A measuring post for monitoring the quality of natural waters works as follows.

 In accordance with the established regulations, the automatic control controller 7 includes measuring devices 6 for heating and a pump 4 for reverse pumping to release the pipeline 2 and the pipe system 3 from stagnant water. Then, the automatic control controller 7 turns on the pump 4 for supplying water to the flow-through analytical cell 5. After establishing the readings of the measuring devices 6, the automatic control controller 7 interrogates them and stores the values of the water quality indicators in its RAM. From these indications, the automatic control controller 7 generates a message and transmits it through the communication equipment 8 to the subscriber until he confirms the receipt of the message.

 Next, the automatic control controller 7 compares the measured values of the water quality indicators with the data of previous measurements. In the case of receiving commands from the subscriber to repeat the entire cycle or individual measurements, the automatic control controller 7 ensures their execution and transmission of the results in the form of a message according to the above scheme.

 After taking measurements, the automatic control controller 7 disconnects the measuring devices 6 and pump 4 from the power source 9 until the next measurement cycle. The controller 7 and communication equipment 8 continue to work in standby mode.

Literature
1. An automatic analyzer for determining the content of total organic carbon in water. Astro 150 Auto Tok. (prospectus of the company "Technoprocur AG").

 2. Handbook of hydrometeorological instruments and installations. - Hydrometeoizdat. L., 1976, p. 221 - 224.

 3. Marine conservation complex "Water Area". Prospectus of the Federal Ecological Fund of the Russian Federation, (prototype), 1994.

Claims (1)

 A measuring station for automatic control of the quality of natural waters, comprising a water sampling device, measuring instruments, communication equipment and a control device, characterized in that the water sampling device is made in the form of a stationary pipeline located at the bottom of a water body across the entire width of the controlled site and equipped a system of nozzles of different lengths, measuring instruments, a control device and communication equipment are located in a coastal isothermal container equipped with an autonomous source chnikom power, and as a control device used controller automatic control.