CN113252860A - Water quality detection system and water quality detection method - Google Patents

Abstract

The invention particularly discloses a water quality detection system and a water quality detection method. The water quality detection system comprises at least one set of sampling device, a sample separation device, at least two sets of analysis devices and a control device, wherein each set of sampling device is provided with a first sample introduction end and a first sample discharge end; the sample separation device is provided with a second sample introduction end and at least two second sample outlet ends, and the second sample introduction end is communicated with the first sample outlet end; the number of the analysis devices is the same as that of the second sample outlet ends, and each set of analysis devices is communicated with one of the second sample outlet ends; the control device is respectively connected with the sampling device, the sample separating device and the analysis device to control the sampling device, the sample separating device and the analysis device to work. The water quality detection system and the water quality detection method provided by the invention can realize one-time multi-parameter detection of water quality and can effectively improve the efficiency of water quality detection.

Description

Water quality detection system and water quality detection method

Technical Field

The invention relates to the technical field of water quality detection, in particular to a water quality detection system and a water quality detection method.

Background

In industrial production processes, water is often required as a raw material, as a working fluid, as a waste, and the like. The quality requirements of water participating in different production processes are different. After the water which does not reach the standard enters the production process, the product quality is influenced and production safety accidents are caused. Therefore, it is necessary to detect characteristic parameters of industrial water including physical, chemical, biological and the like.

The presently disclosed water quality detection method and device can well detect one parameter in physicochemical and biological characteristics. If another parameter needs to be detected, another set of detection method and apparatus needs to be used. In industrial production, various parameters are required to be detected simultaneously. Therefore, it is necessary to arrange a plurality of sets of detection devices in an industrial site, which results in an increase in production costs. More importantly, after a plurality of detection devices are arranged, manual meter reading needs to be carried out on the plurality of devices respectively, so that the efficiency is low, the real-time analysis is inconvenient, and the user can not make a water use decision quickly.

Disclosure of Invention

One of the purposes of the embodiments of the present invention is to provide a water quality detection system, which aims to at least solve the problems of low efficiency and the like of the existing water quality detection.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:

a water quality detection system comprising:

at least one set of sampling devices, each set of sampling device having a first sample introduction end and a first sample discharge end;

the sample separation device is provided with a second sample inlet end and at least two second sample outlet ends, and the second sample inlet ends are communicated with the first sample outlet ends;

the number of the analysis devices is the same as that of the second sample outlet ends, and each analysis device is communicated with one of the second sample outlet ends;

and the control device is respectively connected with the sampling device, the sample separating device and the analysis device so as to control the sampling device, the sample separating device and the analysis device to work.

In one embodiment, the water quality detection system further comprises a first recovery device, each set of the sampling device comprises an input pipe, a detection device, a first reversing valve, a sample separation conveying pipe and a first recovery conveying pipe, the detection device is arranged on the input pipe and used for detecting parameters of a water sample, the input pipe is connected with the sample separation conveying pipe and the first recovery conveying pipe in a reversing manner through the first reversing valve, the end part, far away from the first reversing valve, of the sample separation conveying pipe is communicated with the second sample introduction end, and the end part, far away from the first reversing valve, of the first recovery conveying pipe is communicated with the first recovery device;

the control device is in communication connection with the detection device and is used for controlling the first reversing valve to conduct the input pipe and the sample separation conveying pipe or conduct the input pipe and the first recovery conveying pipe according to information fed back by the detection device.

In one embodiment, the detection means comprises a temperature sensor and/or a pressure sensor; and/or the presence of a gas in the atmosphere,

each set of sampling device all includes more than two the input tube, just detection device first switching-over valve divide the appearance conveyer pipe and the quantity of first recovery conveyer pipe with the quantity of input tube is the same, every be equipped with one on the input tube respectively detection device.

In an embodiment, the sample separation device further comprises sample separation assemblies with the same number as the sampling devices, the number of the second sample introduction ends is the same as the number of the sampling devices, and each second sample introduction end is connected with each second sample introduction end in a reversing mode through one sample separation assembly.

In one embodiment, the water quality detection system further comprises first recovery devices, each sample dividing assembly comprises second reversing valves, second recovery conveying pipes and flow dividing pipes, the number of the flow dividing pipes is the same as that of the analysis devices, the flow dividing pipes are used for serially connecting the second reversing valves in sequence, and the number of the flow dividing pipes is one less than that of the second reversing valves; the second sample introduction end is through one the second switching-over valve switching-over is connected one the second goes out appearance end and one the shunt tubes, the shunt tubes is through another the second switching-over valve switching-over is connected another the second goes out appearance end and another the shunt tubes or switching-over are connected another the second go out appearance end with the conveyer pipe is retrieved to the second, the second is retrieved keeping away from of conveyer pipe the tip of second switching-over valve with first recovery unit is connected.

In one embodiment, the water quality detection system further comprises a first recovery device and a second recovery device; each set of the analysis device comprises a first analysis tube, a flow cell, a second analysis tube, an analyzer, a third recovery delivery tube and a waste liquid discharge tube;

the flow cell is provided with a sample inlet, a sample outlet and an overflow port;

the first analysis tube is communicated with the second sample outlet end and the sample inlet; the second analysis tube is communicated with the sample outlet and the analyzer; the third recovery conveying pipe is communicated with the overflow port and the first recovery device; the waste liquid discharge pipe is communicated with the analyzer and the second recovery device;

the control device is in communication connection with the analyzer and is used for collecting sample information obtained by analysis of the analyzer.

In one embodiment, each set of the analysis devices further comprises a flow sensor and a throttle valve, wherein the flow sensor and the throttle valve are both arranged on the first analysis tube, and the throttle valve is arranged between the flow sensor and the sample inlet; the control device is in communication connection with the flow sensor, the throttle valve and the analyzer respectively, and controls the throttle valve to work according to information fed back by the flow sensor.

In one embodiment, the water quality detection system further comprises a human-computer interaction device and a gateway for communication connection with a remote server, the human-computer interaction device is connected with the control device, and the gateway is connected with the control device.

The second purpose of the embodiment of the invention is to provide a water quality detection method.

The water quality detection method comprises the following steps:

controlling at least one set of sampling device to collect water samples;

controlling the sample separation device to drain the water sample collected by the sampling device to at least two sets of analysis devices;

and controlling two sets of analysis devices to respectively detect the water sample flowing into the analysis devices.

In one embodiment, the controlling at least one set of sampling devices to collect the water sample includes:

controlling the water sample to be input into the sampling device from an input pipe;

acquiring parameter feedback information of the water sample conveyed by the input pipe by the detection device, judging whether the parameter of the water sample conveyed by the input pipe is within a preset threshold value, and controlling the first reversing valve to guide the water sample conveyed by the input pipe to a sample separation conveying pipe communicated with the sample separation device if the parameter of the water sample conveyed by the input pipe is within the preset threshold value; and if the water sample is not within the preset threshold value, controlling the first reversing valve to guide the water sample conveyed by the input pipe to a first recovery conveying pipe communicated with the first recovery device.

In one embodiment, the controlling the sample separation device to drain the water sample collected by the sampling device to at least two sets of analysis devices comprises:

and controlling at least two second reversing valves in the sample dividing device to divide the water sample conveyed by the sample dividing conveying pipe into at least two branches, wherein each branch flows into one set of analysis device from the second sample outlet end.

The invention has the beneficial effects that:

the water quality detection system and the water quality detection method provided by the embodiment of the invention can input a plurality of water samples at one time, can realize the analysis and detection of a plurality of parameters on one water sample at one time, and can automatically generate the parameter result of the detected water sample by the control device, thereby not only shortening the time of water sample detection, but also saving the input cost of equipment, simultaneously needing no manual meter reading, saving a large amount of manpower, bringing great convenience to the comprehensive analysis of water quality such as industrial process water and the like, and improving the efficiency of water quality detection; in addition, the water quality detection system can measure a plurality of parameters at one time, is more convenient and faster than the prior device which can only detect one parameter, and greatly reduces the space occupied by the installation of the water quality detection system.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of a water quality detection system according to an embodiment of the present invention;

FIG. 2 is a schematic control diagram of a water quality detection system according to an embodiment of the present invention;

FIG. 3 is a simplified schematic diagram of a sampling device according to an embodiment of the present invention;

FIG. 4 is a simplified schematic diagram of a sample separation device according to an embodiment of the present invention;

FIG. 5 is a simplified schematic diagram of an analysis device provided in accordance with an embodiment of the present invention;

FIG. 6 is a schematic diagram of a control relationship of a water quality detecting system according to an embodiment of the present invention;

FIG. 7 is a schematic flow chart of a water quality detection method according to an embodiment of the present invention;

fig. 8 is a schematic workflow diagram of a sampling apparatus according to an embodiment of the present invention;

fig. 9 is a schematic view of a working flow of the sample separation device and the analysis device according to the embodiment of the present invention.

Reference numerals:

1. a water quality detection system;

11. a sampling device; 1101. a first sample introduction end; 1102. a first sample outlet end; 111. an input tube; 112. a detection device; 1121. a temperature sensor; 1122. a pressure sensor; 113. a first direction changing valve; 114. a sample separation conveying pipe; 115. a first recovery delivery pipe;

12. a sample separating device; 1201. a second sample introduction end; 1202. a second sample outlet end; 121. a sample separating assembly; 1211. a second directional control valve; 1212. a second recovery duct; 1213. a shunt tube;

13. an analysis device; 131. a first analysis tube; 132. a flow-through cell; 1321. a sample inlet; 1322. a sample outlet; 1323. an overflow port; 133. a second analysis tube; 134. an analyzer; 135. a third recovery duct; 136. a waste liquid discharge pipe; 137. a flow sensor; 138. a throttle valve;

14. a control device; 15. a first recycling device; 16. a second recovery device; 17. provided is a human-computer interaction device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 to 6 are schematic structural diagrams of a water quality detection system 1 according to an embodiment of the present invention, and fig. 8 to 9 are schematic flow diagrams of a water quality detection method according to an embodiment of the present invention.

Referring to fig. 1 and 2, a water quality detecting system 1 of the present embodiment includes a sampling device 11, a sample separating device 12, an analyzing device 13, a control device 14, a first recycling device 15, a second recycling device 16, and a human-computer interaction device 17. The number of the sampling devices 11 is at least one, and each set of sampling device 11 has a first sample inlet end 1101 and a first sample outlet end 1102; the sample separation device 12 has a second sample inlet 1201 and at least two second sample outlets 1202, and the second sample inlet 1201 communicates with the first sample outlet 1102; the number of the analysis devices 13 is at least two, the number of the analysis devices 13 is the same as that of the second sample outlet ends 1202, and each set of the analysis devices 13 is communicated with one of the second sample outlet ends 1202; the first recovery device 15 is respectively communicated with each set of sampling device 11, each set of sample separation device 12 and each set of analysis device 13, and is used for recovering water samples in each set of sampling device 11, each set of sample separation device 12 and each set of analysis device 13; the second recovery device 16 is communicated with each set of analysis device 13 and is used for recovering the water sample analyzed by each set of analysis device 13; the control device 14 is connected with each set of sampling device 11, each set of sample separating device 12 and each set of analysis device 13 to control each set of sampling device 11, each set of sample separating device 12 and each set of analysis device 13 to work, and meanwhile, the control device 14 is also connected with the human-computer interaction device 17, so that the human-computer interaction control of the water quality detection system 1 is realized.

Referring to fig. 3, 1 and 6, each set of sampling devices 11 includes an input tube 111, a detection device 112, a first reversing valve 113, a sample separation delivery tube 114 and a first recovery delivery tube 115. The detecting device 112 is disposed on the input tube 111 for detecting parameters of a water sample entering the sampling device 11, the input tube 111 is connected to the sample separation delivery tube 114 and the first recovery delivery tube 115 through the first reversing valve 113 in a reversing manner, an end portion of the input tube 111 far away from the first reversing valve 113 is a first sample introduction end 1101, an end portion of the sample separation delivery tube 114 far away from the first reversing valve 113 is communicated with the second sample introduction end 1201 (i.e., the first sample introduction end 1102 is communicated with the second sample introduction end 1201), and an end portion of the first recovery delivery tube 115 far away from the first reversing valve 113 is communicated with the first recovery device 15. The control device 14 is connected to the detection device 112 in communication, so as to control the first direction valve 113 to conduct the input pipe 111 and the sample delivery pipe 114 or conduct the input pipe 111 and the first recovery delivery pipe 115 according to the information fed back by the detection device 112. In some embodiments, the first direction valve 113 is a three-way solenoid valve, and it is convenient to control whether the sampled water entering the input pipe 111 flows to the sample separation conveying pipe 114 or the first recovery conveying pipe 115. In some embodiments, the detection device 112 includes a temperature sensor 1121 and a pressure sensor 1122, the temperature sensor 1121 and the pressure sensor 1122 are disposed on the input pipe 111 along the flow direction of the water sample, the temperature sensor 1121 is used for detecting the temperature of the water sample in the input pipe 111, and the pressure sensor 1122 is used for detecting the water pressure of the water sample in the input pipe 111, and transmitting the detected temperature and water pressure to the control device 14.

Referring to fig. 1, 2 and 3, in some embodiments, each set of sampling devices 11 includes more than two input tubes 111, and the number of the detecting devices 112 is the same as that of the input tubes 111, and each detecting device 112 is correspondingly disposed on one input tube 111; the number of the first direction valves 113 is the same as the number of the input pipes 111; the number of the sample separation conveying pipes 114 is the same as that of the input pipes 111; the number of first recovery ducts 115 is the same as the number of input ducts 111. Fig. 3 shows a case that the number of the input pipes 111 is three, in the embodiment of the present invention, the number of the input pipes 111 of each set of sampling device 11 is not limited to three, and more input pipes 111 may be additionally provided according to the requirement of water quality detection, so that the sampling device 11 has more first sample injection ends 1101, which is convenient for collecting multiple water samples. Fig. 2 shows the water quality detecting system 1 including three sets of sampling devices 11 in parallel, but the sampling devices 11 of the water quality detecting system 1 of the present invention are not limited to three sets, and n sets of sampling devices are possible in parallel, where n is a positive integer.

Referring to fig. 1 and 4, the sample dividing device 12 includes sample dividing assemblies 121, the number of the sample dividing assemblies 121 is the same as that of the sampling devices 11, the number of the second sample inlets 1201 is the same as that of the sampling devices 11, and each second sample inlet 1201 is connected to each second sample outlet 1202 by reversing one sample dividing assembly 121.

Referring to fig. 1, 4 and 6, in some embodiments, each sample splitting assembly 121 includes a second reversing valve 1211, a second recovery duct 1212 and branch pipes 1213, wherein the number of the second reversing valves 1211 is the same as that of the analyzing devices 13, the number of the second recovery duct 1212 is one, the number of the branch pipes 1213 is one less than that of the second reversing valves 1211, and all the branch pipes 1213 are used for connecting the plurality of second reversing valves 1211 in series. The second sample inlet 1201 is connected with a second sample outlet 1202 and a shunt pipe 1213 in a reversing way through a second reversing valve 1211, the shunt pipe 1213 is connected with another second sample outlet 1202 and another shunt pipe 1213 in a reversing way through another second reversing valve 1211 or connected with another second sample outlet 1202 and a second recovery delivery pipe 1212 in a reversing way, and the end of the second recovery delivery pipe 1212 far away from the second reversing valve 1211 is connected with the first recovery device 15. The control device 14 is communicatively connected to the second reversing valve 1211 to control operation of the second reversing valve 1211.

For the sake of clarity of the structure and connection relationship of the sample dividing device 12, fig. 4 illustrates a simplified schematic diagram of the sample dividing device 12 including three sample dividing assemblies 121, and each illustrated sample dividing assembly 121 includes three second reversing valves 1211, one second recovery delivery pipe 1212 and two shunt pipes 1213, and correspondingly, there are a total of three second sample outlets 1202 in the illustration, and the three second reversing valves 1211 are named as a first second reversing valve 1211, a second reversing valve 1211 and a third second reversing valve 1211 in series in a front-to-back order; the two shunt tubes 1213 are named as a first shunt tube 1213 and a second shunt tube 1213 in series in sequence; the three second sample outlets 1202 are named as a first second sample outlet 1202, a second sample outlet 1202 and a third second sample outlet 1202 in sequence according to the sequence of the second reversing valve 1211, then the second sample inlet 1201 is connected with the first second sample outlet 1202 and a first shunt pipe 1213 in a reversing way through the first second reversing valve 1211, the end of the first shunt pipe 1213 away from the first second reversing valve 1211 is connected with the second sample outlet 1202 and a second shunt pipe 1213 in a reversing way through the second reversing valve 1211, and the end of the second shunt pipe 1213 away from the second reversing valve 1211 is connected with the third second sample outlet 1202 and a second recovery delivery pipe 1212 in a reversing way through the third second reversing valve 1211. In the embodiment of the present invention, the number of the second reversing valves 1211, the number of the branch pipes 1213, the number of the sampling devices 11, the number of the second sampling ends 1202, and the number of the analyzing devices 12 have the following relationship: the number of the second reversing valves 1211 is n, the number of the shunt tubes 1213 is n-1, the number of the sampling devices 11 is n, the number of the second sampling ends 1202 is n, the number of the analyzing devices 12 is n, and n is an integer not less than 3, and all the components can be extended and expanded according to the connection relationship illustrated in fig. 4, and the details are not repeated herein. In some embodiments, the second reversing valve 1211 is a three-way solenoid valve.

Referring to fig. 5, fig. 1 and fig. 6, each set of analysis devices 13 includes a first analysis tube 131, a flow cell 132, a second analysis tube 133, an analyzer 134, a third recovery duct 135 and a waste liquid discharge tube 136; the flow cell 132 has a sample inlet 1321, a sample outlet 1322, and an overflow 1323. Specifically, the first analysis tube 131 communicates with the second sample outlet 1202 and the sample inlet 1321, so that the sample water flowing from the second sample outlet 1202 of the sample dividing device 12 into the first analysis tube 131 flows from the sample inlet 1321 to the flow cell 132; the second analysis tube 133 is communicated with the sample outlet 1322 and the analyzer 134, so that the water sample flowing into the flow cell 132 is conveyed to the analyzer 134 for analysis, and the waste liquid discharge tube 136 is communicated with the analyzer 134 and the second recovery device 16, so that the water sample analyzed by the analyzer 134 is recovered, and the water sample after analysis is prevented from flowing randomly to affect the water quality detection system 1; the third recycling delivery pipe 135 communicates with the overflow port 1323 and the first recycling device 15, so that the excessive water sample flowing into the flow cell 132 can be recycled, and the water sample is prevented from overflowing into the water quality detection system 1 to affect the water quality detection system 1. The control device 14 is communicatively connected to the analyzer 134 for controlling the operation of the analyzer 134 and feeding back information about the water samples analyzed by the analyzer 134.

Referring to fig. 5 and 6, in some embodiments, each set of analysis devices 13 further includes a flow sensor 137 and a throttle valve 138, wherein the flow sensor 137 and the throttle valve 138 are both disposed on the first analysis tube 131, and the throttle valve 138 is disposed between the flow sensor 137 and the sample inlet 1321, that is, the flow sensor 137 and the throttle valve 138 are disposed on the first analysis tube 131 along the direction of the water flow of the first analysis tube 131; the control device 14 is in communication connection with the flow sensor 137 and the throttle valve 138 respectively to collect the water sample flow information detected by the flow sensor 137, and control the throttle valve 138 to work according to the fed back water sample flow information, and if the water sample flow is small, adjust the throttle valve 138 to increase the flow; when the flow rate of the sampled water is large, the throttle valve 138 is adjusted so that the flow rate becomes small.

Referring to fig. 6, the water quality detecting system 1 further includes a gateway (not shown), and the gateway is connected to the control device 14 to be in communication connection with the remote server, so as to implement remote control, for example, the gateway can be connected to the remote server through a terminal device, and the terminal device controls the operation of the water quality detecting system 1 and obtains the water sample information fed back by the water quality detecting system 1. Through the human-computer interaction device 17 or the terminal device, the information of the water quality detection system 1, including state information of various instruments, early warning information, real-time data information, historical data information, report generation, data refreshing, maintenance and management, can be obtained, thereby greatly facilitating the detection of water quality and simultaneously saving manpower and material resources.

Referring to fig. 6, the human-computer interaction device 17 provides a display, touch, and acousto-optic indicator light human-computer interaction method, and through the human-computer interaction device 17, an operator can view historical data of parameters obtained by analyzing each water quality by the water quality detection system 1, and can also regulate and control internal parameters of the control device 14.

Since the remote server is remote from the site of the site, it is connected to the control device 14 through ethernet. The remote server is equipped with a server-specific operating system, and runs service software adapted to the control device 14 on the operating system, the service software providing a graphical operating interface. The operator can read the internal data of the control device 14 and write the internal parameters of the control device 14 in a place far away from the water sample collection site through the network.

The terminal device is generally a mobile device such as a smart phone or a tablet computer, and is connected with the remote server through the ethernet. The terminal equipment can run application software adaptive to the remote server, and can use the network release service provided by the remote server. The application software provides a graphical operation interface, and an operator can read the internal data of the control device 14 through a network at any time and any place in an unfixed place far away from a water sample collection site.

The sub-modules contained in the information service platform program installed on the remote server include an instrument state sub-module, an early warning information sub-module, a real-time data sub-module, a historical data sub-module, a report generation sub-module, a data refreshing sub-module, a maintenance management sub-module, a parameter management sub-module and the like, and the functions realized by each sub-module are as follows:

an instrument status submodule: and monitoring the state information of the instrument in real time, highlighting the abnormal state in an obvious mode, and reminding related personnel of the abnormal state information of the instrument in a mode of issuing early warning information.

The early warning information submodule: the method comprises two types of information of water quality detection parameter threshold early warning and instrument state early warning. The early warning information is displayed in a mode of interface pop-up window, and a user can manually close the pop-up window or select to enter an early warning information page. In the page, historical early warning information can be viewed and processed, and the processed information is not displayed on the home page any more.

A real-time data submodule: and displaying the latest water quality parameter analysis result data, and if the data exceeds a set threshold, highlighting in a remarkable mode.

A historical data submodule: a user can inquire the water quality parameter analysis result data of any time period in the module, and the data are displayed in the form of a table and a line graph.

A report generation submodule: the user can generate a report form in the module according to time spans of year, quarter, month, week and the like by combining different water sources and parameter results which are freely combined, and can generate a corresponding two-dimensional code to share the report form.

The data refreshing submodule comprises: the real-time data of the platform home page is refreshed after a certain time interval, the value is set by a user, and the user can click a refresh data button on an interface to refresh manually.

And a maintenance management submodule: the user may enter and query maintenance information in the module.

A parameter management submodule: the user can manage the detection parameter information in the module, including parameters such as parameter names, detection methods, detection ranges, measurement accuracy and detection limits.

In addition to the water quality detecting system 1, the embodiment of the present invention further provides a method for detecting water quality by using the water quality detecting system 1.

Referring to fig. 7, fig. 1 and fig. 6, the water quality detecting method includes the following steps:

controlling at least one set of sampling device 11 to collect water samples;

controlling the sample separation device 12 to drain the water sample collected by the sampling device 11 to at least two sets of analysis devices 13;

and controlling two sets of analysis devices 13 to respectively detect the inflowing water samples.

Referring to fig. 8, 3 and 6, the step of controlling at least one set of sampling device 11 to collect a water sample includes:

controlling the water sample to be input into the sampling device 11 from the input pipe 111;

acquiring parameter feedback information of the water sample conveyed by the input pipe 111 by the detection device 112, judging whether the parameter of the water sample conveyed by the input pipe 111 is within a preset threshold value, and if so, controlling the first reversing valve 113 to guide the water sample conveyed by the input pipe 111 to a sample separation conveying pipe 114 communicated with the sample separation device 12; if the water sample is not within the preset threshold value, the first reversing valve 113 is controlled to guide the water sample conveyed by the input pipe 111 to a first recovery conveying pipe 115 communicated with the first recovery device 15.

Referring to fig. 9, 4, 5 and 6, the step of controlling the sample separation device 12 to drain the water sample collected by the sampling device 11 to at least two sets of analysis devices 13 includes:

the at least two second reversing valves 1211 in the sample splitting device 12 are controlled to split the sampled water conveyed by the sample splitting conveying pipe 114 into at least two sub-streams, and each sub-stream flows into a corresponding set of analysis devices 13 from one second sample outlet end 1202. When a water sample entering the analysis device 13 flows through the first analysis tube 131, the control device 14 obtains flow parameters of the water sample conveyed by the first analysis tube 131, if the flow parameters are within a preset threshold value, the water sample is controlled to flow into the flow cell 132 and conveyed to the analyzer 134 through the second analysis tube 133 for analysis, the data of the water sample obtained by the analysis of the analyzer 134 is fed back to the control device 14, and the data information obtained by the analyzer 134 is analyzed, summarized and the like by the control device 14; if the flow rate parameter is not within the preset threshold, the control device 14 adjusts the flow rate of the water sample delivered by the first analyzing tube 131, so that the water sample delivered by the first analyzing tube 131 is within the preset threshold, thereby facilitating the analysis of the analyzer 134.

The method for detecting water quality can compile a detection program in a human-computer interaction device 17 according to the quantity of parameters of water quality to be detected, and set a temperature allowable threshold range, a pressure allowable threshold range, a flow allowable threshold range of each set of analysis device 12, a detection trigger condition, a detection sequence, detection times and the like of each water sample, so that the working condition of the water quality detection system 1 can be flexibly adjusted according to actual needs, meanwhile, because the gateway can be connected with an internal server and a remote server, and the remote server can be connected with terminal equipment, the full intellectualization, unattended operation and remote control of water quality detection can be realized, the risks of occupational diseases and the like caused by the long-term direct contact of operators and chemicals in the water quality detection process are avoided, and the water quality detection system 1 can be suitable for the detection and analysis of various water qualities, the method is particularly suitable for detection and analysis based on electrochemical method and wet chemistry detection principle.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (11)

1. Water quality testing system, its characterized in that includes:

at least one set of sampling devices, each set of sampling device having a first sample introduction end and a first sample discharge end;

the sample separation device is provided with a second sample inlet end and at least two second sample outlet ends, and the second sample inlet ends are communicated with the first sample outlet ends;

the number of the analysis devices is the same as that of the second sample outlet ends, and each analysis device is communicated with one of the second sample outlet ends;

and the control device is respectively connected with the sampling device, the sample separating device and the analysis device so as to control the sampling device, the sample separating device and the analysis device to work.

2. The water quality detection system according to claim 1, further comprising a first recovery device, wherein each set of the sampling device comprises an input pipe, a detection device, a first reversing valve, a sample separation conveying pipe and a first recovery conveying pipe, the detection device is arranged on the input pipe and is used for detecting parameters of a water sample, the input pipe is connected with the sample separation conveying pipe and the first recovery conveying pipe in a reversing way through the first reversing valve, the end part, far away from the first reversing valve, of the sample separation conveying pipe is communicated with the second sample introduction end, and the end part, far away from the first reversing valve, of the first recovery conveying pipe is communicated with the first recovery device;

the control device is in communication connection with the detection device and is used for controlling the first reversing valve to conduct the input pipe and the sample separation conveying pipe or conduct the input pipe and the first recovery conveying pipe according to information fed back by the detection device.

3. The water quality detecting system according to claim 2, wherein the detecting means comprises a temperature sensor and/or a pressure sensor; and/or the presence of a gas in the atmosphere,

each set of sampling device all includes more than two the input tube, just detection device first switching-over valve divide the appearance conveyer pipe and the quantity of first recovery conveyer pipe with the quantity of input tube is the same, every be equipped with one on the input tube respectively detection device.

4. The water quality detecting system according to any one of claims 1 to 3, wherein the sample dividing device further comprises sample dividing assemblies with the same number as the sampling devices, the number of the second sample introduction ends is the same as the number of the sampling devices, and each second sample introduction end is connected with each second sample discharge end in a reversing way through one sample dividing assembly.

5. The water quality detecting system according to claim 4, wherein the water quality detecting system further comprises a first recovery device, each sample dividing assembly comprises a number of second reversing valves which is the same as the number of the analysis devices, a second recovery conveying pipe and a number of shunt pipes which are used for serially connecting the second reversing valves in sequence, and the number of the shunt pipes is one less than that of the second reversing valves; the second sample introduction end is through one the second switching-over valve switching-over is connected one the second goes out appearance end and one the shunt tubes, the shunt tubes is through another the second switching-over valve switching-over is connected another the second goes out appearance end and another the shunt tubes or switching-over are connected another the second go out appearance end with the conveyer pipe is retrieved to the second, the second is retrieved keeping away from of conveyer pipe the tip of second switching-over valve with first recovery unit is connected.

6. A water quality detecting system according to any one of claims 1 to 3, wherein the water quality detecting system further comprises a first recovery device and a second recovery device; each set of the analysis device comprises a first analysis tube, a flow cell, a second analysis tube, an analyzer, a third recovery delivery tube and a waste liquid discharge tube;

the flow cell is provided with a sample inlet, a sample outlet and an overflow port;

the first analysis tube is communicated with the second sample outlet end and the sample inlet; the second analysis tube is communicated with the sample outlet and the analyzer; the third recovery conveying pipe is communicated with the overflow port and the first recovery device; the waste liquid discharge pipe is communicated with the analyzer and the second recovery device;

the control device is in communication connection with the analyzer and is used for collecting sample information obtained by analysis of the analyzer.

7. The water quality detecting system according to claim 6, wherein each set of the analyzing device further comprises a flow sensor and a throttle valve, the flow sensor and the throttle valve are both disposed on the first analyzing tube, and the throttle valve is disposed between the flow sensor and the sample inlet; the control device is in communication connection with the flow sensor, the throttle valve and the analyzer respectively, and controls the throttle valve to work according to information fed back by the flow sensor.

8. The water quality detection system of any one of claims 1 to 3, further comprising a human-computer interaction device and a gateway for communication with a remote server, wherein the human-computer interaction device is connected with the control device, and the gateway is connected with the control device.

9. The water quality detection method is characterized by comprising the following steps:

controlling at least one set of sampling device to collect water samples;

controlling the sample separation device to drain the water sample collected by the sampling device to at least two sets of analysis devices;

and controlling two sets of analysis devices to respectively detect the water sample flowing into the analysis devices.

10. The method for detecting water quality according to claim 9, wherein the controlling at least one set of sampling devices to collect the water sample comprises:

controlling the water sample to be input into the sampling device from an input pipe;

acquiring parameter feedback information of the water sample conveyed by the input pipe by the detection device, judging whether the parameter of the water sample conveyed by the input pipe is within a preset threshold value, and controlling the first reversing valve to guide the water sample conveyed by the input pipe to a sample separation conveying pipe communicated with the sample separation device if the parameter of the water sample conveyed by the input pipe is within the preset threshold value; and if the water sample is not within the preset threshold value, controlling the first reversing valve to guide the water sample conveyed by the input pipe to a first recovery conveying pipe communicated with the first recovery device.

11. The water quality detection method according to any one of claims 9 to 10, wherein the controlling the sample separation device to drain the water sample collected by the sampling device to at least two sets of analysis devices comprises:

and controlling at least two second reversing valves in the sample dividing device to divide the water sample conveyed by the sample dividing conveying pipe into at least two branches, wherein each branch flows into one set of analysis device from the second sample outlet end.

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