CN116381171A - Flow detection cell, multichannel groundwater treatment system and hydraulic control method - Google Patents

Flow detection cell, multichannel groundwater treatment system and hydraulic control method Download PDF

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Publication number
CN116381171A
CN116381171A CN202310074484.3A CN202310074484A CN116381171A CN 116381171 A CN116381171 A CN 116381171A CN 202310074484 A CN202310074484 A CN 202310074484A CN 116381171 A CN116381171 A CN 116381171A
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China
Prior art keywords
sampling
channel
flow
sequence
water
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Inventor
李洗明
成一知
纪智慧
徐巍
王承刚
李坤林
肖潇
李晶
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Hunan Newworld Science And Technology Co ltd
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Hunan Newworld Science And Technology Co ltd
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Priority to CN202310074484.3A priority Critical patent/CN116381171A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F17D1/14—Conveying liquids or viscous products by pumping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state

Abstract

The invention provides a flow detection cell and a multi-channel groundwater treatment system and a hydraulic control method, wherein the flow detection cell comprises a flow detection cavity, a water inlet pipe and a collector, the bottom of the flow detection cavity is provided with a water outlet, the side wall of the flow detection cavity is provided with an overflow port, the collector is arranged in the flow detection cavity, the collection end of the collector is positioned between the water outlet and the overflow port, one end of the water inlet pipe is inserted into the flow detection cavity, and one end of the water inlet pipe positioned in the flow detection cavity is lower than the collection end of the collector. According to the invention, one end of the water inlet pipe is arranged in the flow detection cell and is lower than the acquisition end of the collector, so that the water flow of the water inlet pipe is prevented from directly impacting the acquisition end, the influence on the collector is avoided, the service life of the collector is prolonged, and the long-time collection of water samples in a plurality of channels is adapted.

Description

Flow detection cell, multichannel groundwater treatment system and hydraulic control method
Technical Field
The invention relates to a hydraulic control device and a hydraulic control method, in particular to a flow detection cell, a multichannel groundwater treatment system and a hydraulic control method.
Background
The groundwater needs to be monitored at multiple points in the repairing process, and the monitoring workload is large. The existing equipment can only adopt single-channel sampling monitoring, and can not realize multipoint sampling through one analyzer. When multiple points need to be measured, multiple analyzers need to be provided. Because the analyzer equipment is expensive, when the data change that needs to sample is less, can not give full play to its equipment ability, causes the waste of cost, traditional mode sampler and analyzer equipment are many simultaneously, and the space occupies greatly, needs dedicated analysis cabin to arrange equipment, and the space requirement is high.
In addition, groundwater is equipped with the detection pond in the repair process to detect groundwater quality, and is configured with high sensitivity, high accuracy's detection sensor in the detection pond, and detection sensor sensitivity is high, can not directly wash (wash), otherwise can lead to measurement deviation and influence monitoring sensor's life, often need to calibrate the back again and just can use, this can seriously influence multichannel detection's efficiency.
Disclosure of Invention
The invention provides a flow-through detection cell, a multichannel groundwater treatment system and a hydraulic control method, so as to realize effective collection of water samples of a plurality of channels.
The first aspect of the invention provides a flow detection cell, which comprises a flow detection cavity, a water inlet pipe and a collector, wherein a water outlet is formed in the bottom of the flow detection cavity, an overflow port is formed in the side wall of the flow detection cavity, the collector is arranged in the flow detection cavity, the collection end of the collector is positioned between the water outlet and the overflow port, one end of the water inlet pipe is inserted into the flow detection cavity, and one end of the water inlet pipe is positioned in the flow detection cavity and is lower than the collection end of the collector.
Further, the flow detection cell further comprises a flow equalization water distribution device which is arranged in the flow detection cavity and comprises a flow equalization disc, a plurality of flow equalization water distribution holes are formed in the flow equalization disc, and one end of the water inlet pipe, which is positioned in the flow detection cavity, is communicated with the lower space of the flow equalization disc.
Furthermore, the flow equalization water distribution device also comprises a bottom spray disk, wherein the bottom spray disk is positioned below the flow equalization disk and is communicated with the water inlet pipe.
Further, the spraying direction of the bottom spraying disk is downward.
Further, the spraying opening of the bottom spraying disc is a one-way non-return nozzle.
Further, the lower surface of the bottom spraying disc is of a downward cambered surface structure.
Further, the bottom of the circulation detection cavity is a funnel, and the water outlet is positioned at the bottommost position of the funnel.
Further, the bottom of the circulation detection cavity is a funnel, and the water outlet is positioned at the bottommost position of the funnel.
The invention also discloses a multichannel groundwater treatment system using the flow-through detection cell, which comprises a plurality of sampling structures, wherein each sampling structure comprises a sampling area and a channel, the sampling area is communicated with a water inlet pipe of the flow-through detection cell through the channel, and a sampling electromagnetic valve is arranged on the channel.
The invention provides a hydraulic control method for multichannel groundwater treatment, which is characterized by comprising the following steps of:
s101, determining a channel to be sampled;
s102, only a sampling electromagnetic valve of a sampling channel is opened, and a sampling area is cleaned for a first unit time;
s103, closing the emptying valve, and supplying water to the sampling area for a second unit time;
s104, collecting and analyzing the water sample in the sampling area in the second unit time;
s105, after the second unit time is finished, closing the sampling electromagnetic valve, and opening the emptying valve to empty the water sample in the sampling area.
Further, the hydraulic control method further comprises a cyclic sampling process:
s201, acquiring a sampling command and determining the sampling sequence of each current channel;
s202, identifying a sampling electromagnetic valve of a channel according to a sampling sequence, and executing a single-channel sampling process if the sampling electromagnetic valve meets the current channel in the sampling sequence;
s203, after the single-channel sampling process is completed, repeating S202 according to the sampling sequence until the sampling of each channel in the sampling sequence is completed.
Further, in S203, after the single-channel sampling process is completed, S202 is repeated, and in the single-channel sampling process, the first unit time is changed to the interval time, and the interval time is greater than the first unit time.
Further, after the single-channel sampling process is completed, repeating S202 according to the sampling sequence until the sampling of each channel in the sampling sequence is completed includes:
s2031, repeating S202 according to a sampling sequence after completing a single-channel sampling process;
s2032, determining the number of the current acquired channels, and matching the number of the channels with the number of the channels in the sampling sequence, and if the number of the current acquired channels is not smaller than the number of the channels in the sampling sequence, determining that the sampling of each channel in the sampling sequence is finished.
Further, the step S202 is to identify the sampling electromagnetic valve of the channel according to the sampling sequence, and if the sampling electromagnetic valve meets the current channel in the sampling sequence, the single channel sampling process is executed, which comprises the following steps:
s2021, identifying sampling electromagnetic valves of the channels according to the sampling sequence;
s2022, carrying out numerical designation on each channel in sequence as 1#, 2#, 3#, … and n#, according to a sampling sequence;
s2023, identifying a sampling electromagnetic valve of a current channel to be sampled according to the sampling sequence, and executing a single-channel sampling process if the current channel in the sampling sequence is met.
Further, the ratio of the first unit time to the second unit time is (1-3): 3.
further, the first unit time is 4-10 seconds.
Still further, the interval time is 5-15 minutes.
Further, the system also comprises a multichannel groundwater treatment system, wherein the multichannel groundwater treatment system comprises a flow-through detection cell, and the flow-through detection cell is used for collecting and analyzing water samples in a hydraulic control method; the flow detection cell is provided with a water inlet, the water inlet of the flow detection cell is positioned above 3/4 of the total height of the flow detection cell, and the flow detection cell is communicated with the sampling area through the water inlet.
Furthermore, the bottom of the flow detection cell is funnel-shaped, and a water outlet is arranged at the bottom of the flow detection cell.
Compared with the prior art, the invention avoids the impact of water flow of the water inlet pipe on the acquisition end directly by arranging one end of the water inlet pipe in the flow detection cell lower than the acquisition end of the acquisition device, avoids the influence on the acquisition device, prolongs the service life of the acquisition device and is suitable for long-time acquisition of water samples of a plurality of channels. Meanwhile, one end of the water inlet pipe is lower than the collecting end of the collector, a bottom water inlet structure is formed, and new water sample flows out from the lower part and upwards under the action of water flow, so that the collector can continuously obtain updated water sample.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a flow-through detection chamber according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a flow equalization water distribution device and a flow equalization plate and a bottom spray plate structure according to the embodiment of the invention;
FIG. 4 is a flow chart of the single channel analysis sampling system according to an embodiment of the present invention;
FIG. 5 is a flow chart of a single analyzer wheel inspection pretreatment sampling system according to an embodiment of the present invention.
1. A flow-through detection chamber; 11. a water outlet; 12. an overflow port; 2. a water inlet pipe; 3. a collector; 4. a flow equalizing water distribution device; 41. a flow equalizing disc; 411. flow equalizing water distribution holes; 42. a bottom spray tray.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution of the embodiments of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments.
The first aspect of the present invention provides a flow detection cell, as shown in fig. 1 and fig. 2, where the flow detection cell includes a flow detection chamber 1, a water inlet pipe 2, and a collector 3, a water outlet 11 is provided at the bottom of the flow detection chamber 1, an overflow port 12 is provided on a side wall of the flow detection chamber 1, the collector 3 is installed in the flow detection chamber 1, a collection end of the collector 3 is located between the water outlet 11 and the overflow port 12, one end of the water inlet pipe 2 is inserted into the flow detection chamber 1, and one end of the water inlet pipe 2 located in the flow detection chamber 1 is lower than a collection end of the collector 3.
As shown in fig. 2, the collector 3 is specifically a high-sensitivity and high-precision detection sensor, and in the embodiment of the present invention, the collector 3 includes a pH meter and an analyzer. The collection end of the collector 3 is specifically a detection end of the collector 3 for the water sample. The flow detection cell adopts a high-side inlet and a low-side outlet, the pipe diameter of the water outlet 11 is larger than the pipe diameter of the inlet pipe 2 by 1/4-1/3, the water outlet 11 of the water inlet pipe 2 is positioned in the flow detection cavity 1, the water inlet of the water inlet pipe 2 is higher than the water outlet 11 of the water inlet pipe 2, and the embodiment of the invention adopts a high-inlet low-outlet arrangement mode, so that the backflow of a water sample back to the water inlet end can be prevented.
In particular, the inflow water of the flow detection cell is drained to the inside of the flow cell by adopting a water pipe, the lowest point of the flow cell is 1/4 of the height of the flow detection cavity 1, the measures can prevent the splash of the inflow water sample, pollute the inner surface of the water sample of the flow cell, simultaneously avoid the fluctuation of the surface of the water sample,
according to the embodiment of the invention, the collecting end of the collector 3 is lower than one end of the water inlet pipe 2 in the flow detection cell, so that the water flow of the water inlet pipe 2 is prevented from directly impacting the collecting end, the influence on the collector 3 is avoided, the service life of the collector 3 is prolonged, and the long-time collection of water samples in a plurality of channels is adapted. Meanwhile, one end of the water inlet pipe 2 is lower than the collecting end of the collector 3, a bottom water inlet structure is formed, and new water samples flow out from the lower part and flow upwards under the action of water flow, so that the collector 3 can continuously obtain updated water samples.
Optionally, as shown in fig. 3, the flow detection cell further includes a flow equalization water distribution device 4, the flow equalization water distribution device 4 is installed in the flow detection cavity 1, the flow equalization water distribution device 4 includes a flow equalization disc 41, a plurality of flow equalization water distribution holes 411 are formed in the flow equalization disc 41, and one end of the water inlet pipe 2 located in the flow detection cavity 1 is communicated with a space below the flow equalization disc 41.
Wherein, the flow equalizing plate 41 is provided with flow equalizing holes according to a fluid simulation form. The water flow fed by the water inlet pipe 2 flows upwards and passes through the flow equalizing holes of the flow equalizing disc 41 so as to uniformly mix the water sample.
According to the embodiment of the invention, the flow equalizing water distribution disc is arranged, so that on one hand, water samples are uniformly mixed, monitoring data are more accurate, the impact of direct water inflow on a probe of a detection instrument is reduced, and the influence on the service life and monitoring precision of equipment is reduced; on the other hand, the turbulence of the water sample is prevented from being generated, so that the upper part of the side wall of the flow detection cavity 1 is influenced by water flow fluctuation, and the side wall is washed. In addition, the flow equalizing plate 41 of the embodiment of the invention realizes the up-down physical isolation of the flow detecting cavity 1, prevents the foreign matters on the upper part of the flow detecting cavity 1 from falling (the collector 3 is in a detachable structure, and the collector 3 falls due to unstable installation), blocks the lower emptying port, and plays a role in isolating the foreign matters. Meanwhile, the flow equalization water distribution device 4 is added, so that the uniformity of the upper liquid outlet can be always kept, the rapid entry of a new sample for the current detection can be quickened by the measure, the last sample is emptied, and the new water sample is not influenced by the last water sample in the same water inlet time.
In particular, the flow equalization water distribution device 4 further comprises a bottom spray disc 42, wherein the bottom spray disc 42 is positioned below the flow equalization disc 41, and the bottom spray disc 42 is communicated with the water inlet pipe 2.
In particular, the bottom shower tray 42 sprays downwardly.
In particular, the spray openings of the bottom spray tray 42 are unidirectional non-return spray nozzles.
The unidirectional non-return nozzle is a unidirectional non-return reducing hole, so that water can conveniently flow to the wall and the inside of the detection cavity 1 to wash on one hand, and the pressure of washing is increased on the other hand.
In particular, the lower surface of the bottom shower tray 42 is a downwardly curved surface.
The lower surface of the bottom spraying disk 42 is of a downward cambered surface structure, so that water flow sprayed by the bottom spraying disk 42 is in fan-shaped diffusion, and the bottom of the flow passing detection cavity 1 is effectively flushed at a large angle.
Optionally, the bottom of the flow detection cavity 1 is a funnel, and the water outlet 11 is located at the bottommost position of the funnel.
The flow detection cell adopts a bottom arc chamfer mode, so that liquid accumulation is effectively prevented, liquid accumulation at dead corners is avoided, and smooth discharge of fluid can be ensured; meanwhile, the circular arc chamfer can reduce turbulence generated when fluid encounters the bevel angle, and can also enhance the emptying speed of the fluid.
The bottom of the traditional flow detection cell is generally flat, accumulated water, silt and other impurities are easy to accumulate, and the sampling process of multiple samples is not facilitated. In addition, bubbles may be generated at the suction inlet or the water inlet in the traditional mode, or phenomena such as turbulence and laminar flow may occur to influence the measurement accuracy. The liquid to be detected in the embodiment of the invention can directly clean the flow detection cell, so that not only is the residual liquid sampled last time washed, but also the authenticity of the liquid to be detected is ensured, no additional washing equipment or water source is needed, and new sewage is avoided.
The second aspect of the embodiment of the invention also discloses a multichannel groundwater treatment system applying the flow-through detection cell, which comprises a plurality of sampling structures, wherein each sampling structure comprises a sampling area and a channel, the sampling area is communicated with a water inlet pipe 2 of the flow-through detection cell through the channel, and a sampling electromagnetic valve is arranged on the channel.
In a third aspect of the embodiment of the present invention, as shown in fig. 4, a hydraulic control method of a multichannel groundwater treatment system is provided, where the hydraulic control method includes a single channel sampling process:
s101, determining a channel to be sampled;
in the embodiment of the invention, n is 6, but in actual use, the channels can be expanded by matching with a multi-way valve, so that multi-channel detection of expansion of multiples of 6 of 12 channels, 18 channels and the like is realized; (illustration: infinite expansion at a multiple of 6 can be achieved.)
S102, only a sampling electromagnetic valve of a sampling channel is opened, and a sampling area is cleaned for a first unit time;
the structure of the embodiment of the invention is shown in fig. 4, and the risk of the change of the content of the water sample at the end part of the channel is found in the detection process, so that the water sample at the end part of the channel is discharged continuously for a first unit time to avoid interference;
s103, closing the emptying valve, and supplying water to the sampling area for a second unit time;
wherein S103 specifically further includes:
s1031, when the first unit time is not finished, opening a water supply channel of the sampling area;
s1032, after the first unit time is continued, the bottom valve of the sampling area is not closed, and the water supply channel of the sampling area is opened at the same time, and the third unit time is continued; according to the embodiment of the invention, the third unit time is overlapped with the first unit time and the second unit time, and the water supply in the period of time is increased to flush the last residual sample on the inner wall of the sampler by using the water sample, so that the current sampling is not interfered by the last sample;
s1033, before the third unit time is finished, closing a bottom valve of the sampling area, keeping a water supply channel of the sampling area open, supplying water to the sampling area, and continuing the second unit time to enable water samples in the channel to be accumulated in the sampling area, so that a sampling process is realized, when the water sample of the inflow water is excessive, the water sample can return to an original water supply sampling point through a water outlet, and real-time updating of the water sample is ensured while the inflow water and the outflow water are carried out, thereby avoiding full flow of the flow cell;
s104, collecting and analyzing the water sample in the sampling area from the end of the third unit time to the end of the second unit time;
the sampling device cannot work because the bottom valve is opened and cannot store water, the bottom valve is closed after the third unit time is up, the water sample slowly rises at the moment, the sampling port of the analysis instrument can be submerged after the water sample reaches a certain liquid level height, and the analysis instrument can collect and analyze the water sample;
s105, after the second unit time is finished, closing the sampling electromagnetic valve, and opening the emptying valve to empty the water sample in the sampling area.
Optionally, after completing the sampling, the water sample in the sampling area is emptied, so that the sampling area is in an emptying state, and the next sampling of the channel is facilitated.
Optionally, the ratio of the first unit time to the second unit time is (1-3): 3.
optionally, the first unit time is 4-10 seconds.
Optionally, the third unit time is 10-15 seconds.
According to the embodiment of the invention, the single-channel sampling process is adopted, so that when the analyzer is connected with multiple channels, water samples in corresponding channels can be automatically collected according to the needs, and the multiple-channel sampling of one analyzer is realized.
Optionally, as shown in fig. 5, the hydraulic control method further includes a cyclic sampling process:
s201, acquiring a sampling command and determining the sampling sequence of each current channel;
in the embodiment of the invention, the number of the channels is 6, and a user can set a specific sampling sequence for each channel according to specific commands;
s202, identifying a sampling electromagnetic valve of a channel according to a sampling sequence, and executing a single-channel sampling process if the sampling electromagnetic valve meets the current channel in the sampling sequence;
in the sampling process, channel identification is carried out according to the sampling sequence, and if the channel name of the current channel to be sampled is met, the sampling process is carried out on the channel;
s203, after the single-channel sampling process is completed, repeating S202 according to the sampling sequence until the sampling of each channel in the sampling sequence is completed.
According to the embodiment of the invention, by setting the cyclic sampling process, a worker can conveniently set each channel sequentially according to own needs, and the effect of sequential sampling is realized.
In particular, in S203, after the single channel sampling process is completed, S202 is repeated at intervals, and in the single channel sampling process, the first unit time is changed to the interval time.
In particular, the interval is greater than the first unit time, said interval being 25-30 minutes.
The interval time refers to the time of analyzing a sample by an analyzer, the time is not fixed and needs to be determined according to the requirement of each analyzer, for example, the interval time of the analyzer adopting a chemical analysis method is 25-30 minutes (for example, analysis of chromium salt, arsenic salt and the like), for some meters for sampling in real time, the interval time can be adjusted to be short or even does not need interval time (for example, PH meter, turbidity meter, densimeter and the like), and the person skilled in the art can select the interval time according to the specific condition of the analyzer, so the interval time is not a fixed value, and the interval time of the embodiment of the invention is the interval time value of the chromium salt analyzer.
After the water sample is sampled, the time required for the analyzer to analyze the water sample takes about 20 minutes by taking a chemical analyzer, namely chromium salt as an example, and the time for the analyzer to analyze the water sample can be customized or adjusted according to the characteristics of the analyzer when a person skilled in the art actually works, and the sampling analysis of the flowing water sample in the channel is stopped in the water sample analysis process.
In addition, the embodiment of the invention prolongs the flushing time (third unit time) of the water sample required to be sampled later by adopting the interval time, thereby reducing the interference of the previous water sample to the greatest extent.
Specifically, after the single-channel sampling process is completed, repeating S202 according to the sampling sequence until the sampling of each channel in the sampling sequence is completed includes:
s2031, repeating S202 according to a sampling sequence after completing a single-channel sampling process;
s2032, determining the number of the current acquired channels, and matching the number of the channels with the number of the channels in the sampling sequence, and if the number of the current acquired channels is not smaller than the number of the channels in the sampling sequence, determining that the sampling of each channel in the sampling sequence is finished.
If the number of channels in the sampling sequence is 6, the number of acquired channels is verified in the sampling process, and if the number of acquired channels is less than the number of channels in the sampling sequence in the verification process after the sampling sequence is executed, the error in the current sampling process is indicated, and the verification can be performed in an alarm mode.
In the embodiment of the invention, the sampling process is verified again by adopting the S2032, and if the detection process has missed detection, the detection process is convenient for staff to check in time.
Particularly, the step S202 is to identify the sampling electromagnetic valve of the channel according to the sampling sequence, and if the sampling electromagnetic valve meets the current channel in the sampling sequence, the single-channel sampling process is executed, which comprises the following steps:
s2021, identifying sampling electromagnetic valves of the channels according to the sampling sequence;
s2022, carrying out numerical designation on each channel in sequence as 1#, 2#, 3#, … and n#, according to a sampling sequence;
s2023, identifying a sampling electromagnetic valve of a current channel to be sampled according to the sampling sequence, and executing a single-channel sampling process if the current channel in the sampling sequence is met.
The embodiment of the invention realizes the cyclic sampling of the multichannel groundwater treatment system based on the cyclic sampling process.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the specific embodiments of the present invention after reading the present specification, and these modifications and variations do not depart from the scope of the invention as claimed in the pending claims.

Claims (10)

1. The utility model provides a circulation detection cell, its characterized in that, circulation detection cell includes circulation detection chamber, inlet tube, collector, circulation detection chamber bottom is equipped with the delivery port, circulation detection chamber lateral wall is equipped with the overflow mouth, the collector is installed in circulation detection intracavity, just the collection end of collector is located delivery port, overflow mouth between, inlet tube one end is inserted in circulation detection chamber, just the inlet tube is located the collection end that the one end that the circulation detected the intracavity was less than the collector, circulation detection cell still includes the water distribution device that flow equalizes, the water distribution device that flow equalizes is installed in circulation detection intracavity, the water distribution device that flow equalizes includes the dish that flow equalizes, be equipped with a plurality of water distribution hole that flow equalizes on the dish that flow equalizes, the inlet tube is located the one end that the circulation detected the intracavity and flow equalization dish lower part space is linked together.
2. The flow-through detection cell of claim 1, wherein the flow-through water distribution device further comprises a bottom spray tray, the bottom spray tray is located below the flow-through tray, and the bottom spray tray is communicated with the water inlet pipe.
3. The flow-through detection cell of claim 2, wherein the spray direction of the bottom spray disk is downward, and the spray opening of the bottom spray disk is a one-way non-return nozzle.
4. A flow-through assay cell as claimed in claim 3, wherein the lower surface of the bottom shower tray is a downwardly curved surface.
5. A multi-channel groundwater treatment system using the flow-through detection cell according to any one of claims 1-4, wherein the system comprises a plurality of sampling structures, the sampling structures comprise sampling areas and channels, the sampling areas are communicated with a water inlet pipe of the flow-through detection cell through the channels, and sampling electromagnetic valves are arranged on the channels.
6. A method of hydraulic control of a multi-channel groundwater treatment system according to claim 5, wherein the hydraulic control method comprises a single channel sampling process:
s101, determining a channel to be sampled;
s102, opening a sampling electromagnetic valve of a channel to be sampled, cleaning a sampling area, and continuously maintaining for a first unit time;
s103, closing the emptying valve, and supplying water to the sampling area for a second unit time;
s104, collecting and analyzing the water sample in the sampling area in the second unit time;
s105, after the second unit time is finished, closing the sampling electromagnetic valve, and opening the emptying valve to empty the water sample in the sampling area.
7. The hydraulic control method for multi-channel groundwater treatment according to claim 6, further comprising a cyclic sampling process:
s201, acquiring a sampling command and determining the sampling sequence of each current channel;
s202, identifying a sampling electromagnetic valve of a channel according to a sampling sequence, and executing a single-channel sampling process if the sampling electromagnetic valve meets the current channel in the sampling sequence;
s203, after the single-channel sampling process is completed, repeating S202 according to the sampling sequence until the sampling of each channel in the sampling sequence is completed.
8. The hydraulic control method according to claim 7, wherein in S203, after completing the single-channel sampling process, S202 is repeated, and in executing the single-channel sampling process, the first unit time is changed to each sampling interval time, and the interval time is greater than the first unit time, and the ratio of the first unit time to the second unit time is (1-3): 3.
9. the hydraulic control method for multi-channel groundwater treatment according to claim 10, wherein S203, after completing the single-channel sampling process, repeating S202 according to the sampling sequence until completing the sampling of each channel in the sampling sequence comprises:
s2031, repeating S202 according to a sampling sequence after completing a single-channel sampling process;
s2032, determining the number of the current acquired channels, and matching the number of the channels in the sampling sequence, wherein if the number of the current acquired channels is not smaller than the number of the channels in the sampling sequence, the sampling of each channel in the sampling sequence in one period is considered to be completed.
10. The hydraulic control method for multi-channel groundwater treatment according to claim 9, wherein the step s202 of identifying the sampling solenoid valves of the channels according to the sampling sequence, and executing the single-channel sampling process if the current channel in the sampling sequence is met comprises:
s2021, identifying sampling electromagnetic valves of the channels according to the sampling sequence;
s2022, carrying out numerical designation on each channel in sequence as 1#, 2#, 3#, … and n#, according to a sampling sequence;
s2023, identifying a sampling electromagnetic valve of a current channel to be sampled according to the sampling sequence, and executing a single-channel sampling process if the current channel in the sampling sequence is met.
CN202310074484.3A 2023-01-18 2023-01-18 Flow detection cell, multichannel groundwater treatment system and hydraulic control method Pending CN116381171A (en)

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CN202310074484.3A CN116381171A (en) 2023-01-18 2023-01-18 Flow detection cell, multichannel groundwater treatment system and hydraulic control method

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CN202310074484.3A CN116381171A (en) 2023-01-18 2023-01-18 Flow detection cell, multichannel groundwater treatment system and hydraulic control method

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