CN118443384A - Continuous sampling device for groundwater analysis and detection - Google Patents
Continuous sampling device for groundwater analysis and detection Download PDFInfo
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- CN118443384A CN118443384A CN202410888384.9A CN202410888384A CN118443384A CN 118443384 A CN118443384 A CN 118443384A CN 202410888384 A CN202410888384 A CN 202410888384A CN 118443384 A CN118443384 A CN 118443384A
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- 238000005070 sampling Methods 0.000 title claims abstract description 113
- 238000004458 analytical method Methods 0.000 title claims abstract description 81
- 238000001514 detection method Methods 0.000 title claims abstract description 10
- 239000003673 groundwater Substances 0.000 title claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 223
- 238000000605 extraction Methods 0.000 claims abstract description 32
- 238000005086 pumping Methods 0.000 claims description 29
- 238000000926 separation method Methods 0.000 claims description 26
- 238000002955 isolation Methods 0.000 claims description 11
- 230000000630 rising effect Effects 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 4
- 238000004457 water analysis Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 239000010985 leather Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- 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
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- 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
- G01N1/16—Devices for withdrawing samples in the liquid or fluent state with provision for intake at several levels
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the field of water quality analysis, in particular to a continuous sampling device for underground water analysis and detection, which comprises an inflow sample micro-control extraction part and a layered inflow source drainage part, wherein an inner water sample interception part is arranged between the inflow sample micro-control extraction part and the layered inflow source drainage part, and a disturbance end quantitative interception part is arranged at the top of the inflow sample micro-control extraction part; after the upper water layer and the lower water layer are intercepted by the analysis source end expansion unit and the expansion air source supply unit, the bucket-shaped diversion surface formed between the water bearing skin cavity and the unidirectional self-locking connecting part is expanded through the cut-off surface to naturally flow and converge towards the direction of the unidirectional input unit of the intercepting analysis source, so that a water sample enters the inner side of the layered water inlet source diversion part in a small flow manner under the condition that additional supply pressure is not needed, the influence of the inverted disturbance on the water sample is reduced, the stability of volatile substances of the water sample is ensured, and the accuracy of the analysis result of the water sample is improved.
Description
Technical Field
The invention relates to the field of water quality analysis, in particular to a continuous sampling device for groundwater analysis and detection.
Background
The traditional sampling method is to preset a sampling pipe or a sampling well to construct a sampling aquifer, and then send the sampling end along the inside of the sampling pipe or the sampling well until the sampling end reaches the preset fixed-point aquifer to extract water samples, wherein, because the sampling port of the sampling pipe is smaller, in order to keep the sampling end stably reaching the fixed-point aquifer to be sampled, a certain space for yielding is reserved between the sampling end and the inner wall of the sampling pipe, after the sampling end reaches the fixed-point aquifer, a smaller flowing gap is formed between the sampling end and the inner wall of the sampling pipe due to the existence of the space for yielding, and then the fixed-point aquifer and an upper water layer and a lower water layer at the position of the fixed-point aquifer are mutually converged, so that the singleness of the required segmented water source sampling is easily influenced, and the deviation of the fixed-point sampling of a water source is caused. Especially when the sampling end is positioned in the fixed-point aquifer to perform high-flow suction sampling, the existence of the flowing gap can enable the flowing pressure of the water sample at the confluence position to be additionally increased when the water sample is sucked by the sampling end, so that the entering quantity of water sources of the upper and lower water layers positioned in the fixed-point aquifer to the inside of the sampling end is increased, and multiple error accumulation easily occurs after continuous sampling. Meanwhile, as the flow pressure of the water sample at the confluence part is additionally increased when the water sample is sucked by the sampling end, the disturbance of the water sample before being sucked into the sampling end can be further increased, and a large amount of volatile substances of the water sample are more easily separated out. Due to the influence, the traditional sampling method can not obtain a layering water sample with higher representativeness, so that the accuracy of the final analysis result of the water sample is poor, and the method is not suitable for the requirement of high-precision underground water layering sampling.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a continuous sampling device for analyzing and detecting groundwater.
The technical scheme adopted for solving the technical problems is as follows: the continuous sampling device for groundwater analysis and detection comprises an inflow sample micro-control extraction part and a layered inflow water source drainage part, wherein an inner water sample interception part is arranged between the inflow sample micro-control extraction part and the layered inflow water source drainage part, a disturbance end quantitative interception part is arranged at the top of the inflow sample micro-control extraction part, and the inner water sample interception part and the disturbance end quantitative interception part are used for intercepting a water source converging from the upper end and the lower end of the inflow sample micro-control extraction part to the layered inflow water source drainage part;
The inner water sample intercepting part comprises an adherence support gasket part, a stop surface expansion water bearing skin cavity and an analysis source end expansion unit, the analysis source end expansion unit is fixedly connected with the adherence support gasket part, a bucket-shaped guide cavity propelling part is arranged on one side of the layered water sample intercepting part, the output end of the bucket-shaped guide cavity propelling part is fixedly connected with the analysis source end expansion unit, the bucket-shaped guide cavity propelling part is used for pushing the analysis source end expansion unit to obliquely ascend, after the stop surface expansion water bearing skin cavity is synchronously expanded along the ascending path of the analysis source end expansion unit, a bucket-shaped guide surface is formed along the direction of the water inlet end of the layered water sample intercepting part by the stop surface expansion water bearing skin cavity, so that water samples intercepted between the inner water sample intercepting part and the quantitative intercepting part of the disturbance end are guided to flow to the inner side of the layered water sample intercepting part by the guide surface, and further, the circulation disturbance when a sampling water source enters the layered water sample intercepting part is reduced, and layered water samples are obtained in the layered water sample intercepting part.
Preferably, the disturbance end quantitative shutoff portion comprises an expansion air source supply unit, a breaking isolation unit and a shutoff source end expansion unit, the expansion air source supply unit is arranged at the top of the inflow sample micro-control extraction portion, the outer wall of the expansion air source supply unit is fixedly connected with the breaking isolation unit, the shutoff source end expansion unit is fixedly connected with the breaking isolation unit, and the suction supply end of the expansion air source supply unit is respectively connected with the shutoff source end expansion unit and the analysis source end expansion unit.
Preferably, the stratified water inflow source is provided with a unidirectional self-locking connecting part, an automatic-flowing-side-tilting guiding unit and a cut-off analysis source unidirectional input unit from the drainage part, the inflow sample micro-control pulling-out part is detachably connected with the unidirectional self-locking connecting part, the automatic-flowing-side-tilting guiding unit is arranged at the top end of the stratified water inflow source, the automatic-flowing-side-tilting guiding unit is fixedly connected with the cut-off analysis source unidirectional input unit, the input end of the cut-off analysis source unidirectional input unit is communicated with the stratified water inflow source from the drainage part, the stratified water inflow source bottom of the drainage part is provided with an analysis water source sampling end guiding module, the analysis water source sampling end guiding module is used for guiding the stratified water inflow source from the drainage part to be transmitted to a sampling aquifer, and the cut-off surface expansion water bearing leather cavity is arranged between the adherent support gasket part and the automatic-flowing-side-tilting guiding unit.
Preferably, the analysis water source sampling end guide module comprises a water logging sensor unit, a sampling pipe diameter calibration guide unit, a collection source end positioning unit and a forward joint surface guide unit, wherein the water logging sensor unit is fixedly connected to the bottom of the layered water inflow source drainage part, the sampling pipe diameter calibration guide unit is sleeved on the outer side of the water logging sensor unit, the collection source end positioning unit and the forward joint surface guide unit are both arranged on the outer side of the sampling pipe diameter calibration guide unit, the water logging sensor unit and the forward joint surface guide unit are used for sliding guide when the layered water inflow source drainage part conveys to a sampling aquifer, the water logging sensor unit is provided with an electromagnetic opening and closing guide hole, and the electromagnetic opening and closing guide hole and the collection source end positioning unit are both used for confirming whether the layered water inflow source drainage part reaches the sampling aquifer.
Preferably, the sample separation lifting unit is installed on the inflow sample micro-control separation part, and after the inflow sample micro-control separation part is detached from the unidirectional self-locking connecting part, the inflow sample micro-control separation part is independently taken out from the sampling aquifer through the sample separation lifting unit.
Preferably, the alignment signal analysis module and the pressure contact sensing unit are embedded in the inner side of the unidirectional self-locking connecting part, the pressure contact sensing unit senses the contact pressure surface of the inflow sample micro-control pumping part and the unidirectional self-locking connecting part, and the alignment signal analysis module analyzes whether the inflow sample micro-control pumping part and the unidirectional self-locking connecting part are aligned according to the contact pressure surface.
Compared with the prior art, the invention has the beneficial effects that: after the micro-control pumping part of the inflow sample and the layered inflow water source drainage part reach the sampling aquifer, the bucket-shaped guide cavity pushing part pushes the analysis source end expansion unit to incline and rise, so that the water-bearing leather cavity with the expanded cut-off surface forms a bucket-shaped guide surface along the direction of the layered inflow water source drainage part inflow end, the aquifer with the layered inflow water source drainage part is segmented and intercepted by the interception source end expansion unit and the analysis source end expansion unit, the confluence of the fixed-point aquifer and the upper and lower aquifers at the position of the fixed-point aquifer is blocked, the limitation of water sample collection singleness caused by the confluence of the upper and lower aquifers during sampling is avoided, the fixed-point sampling accuracy of the water source is ensured, meanwhile, after the analysis source end expansion unit and the interception source end expansion unit intercept the upper water layer and the lower water layer, the layered water inflow is generated by the flowing pressure when the water samples in the water-bearing layer where the drainage part is located are not subjected to confluence of the upper water layer and the lower water layer, the bucket-shaped diversion surface formed between the water-bearing skin cavity and the unidirectional self-locking connection part is expanded through the cut-off surface to naturally flow and converge towards the direction of the unidirectional input unit of the interception analysis source, so that the water samples enter the layered water inflow from the inner side of the drainage part in a small flow under the condition that additional supply pressure is not needed, the influence of the inverted disturbance of the water samples is reduced, the stability of volatile substances of the water samples is ensured, and the accuracy of the analysis result of the water samples is improved.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the second embodiment of the present invention.
Fig. 3 is a schematic diagram of a third embodiment of the present invention.
In the figure: 1. a micro-control pumping part for an inflow sample; 11. the sample is separated from the lifting unit; 2. an inner layer water sample interception part; 21. an adherence support washer section; 22. the cut-off surface expands the water-bearing skin cavity; 23. analyzing a source end expansion unit; 24. a bucket-shaped guide cavity propelling part; 3. the stratified inflow is from the drainage part; 31. a unidirectional self-locking connecting part; 311. an alignment signal analysis module; 312. a pressure contact sensing unit; 32. a self-flowing roll guide unit; 33. a truncated analysis source unidirectional input unit; 4. a disturbance end quantitative shutoff part; 41. an expansion air source supply unit; 42. breaking the isolation unit; 43. a cut-off source end expansion unit; 5. analyzing a water source sampling end guide module; 51. a water immersion sensing unit; 511. electromagnetic opening and closing the guide hole; 52. a sampling pipe diameter calibration guide unit; 53. a source end positioning unit is collected; 54. forward joint guide unit.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1-3, the continuous sampling device for analyzing and detecting groundwater provided by the invention comprises an inflow sample micro-control extraction part 1 and a layered water inflow source drainage part 3, wherein an inner water sample interception part 2 is arranged between the inflow sample micro-control extraction part 1 and the layered water inflow source drainage part 3, a disturbance end quantitative interception part 4 is arranged at the top of the inflow sample micro-control extraction part 1, and the inner water sample interception part 2 and the disturbance end quantitative interception part 4 are used for intercepting a water source converging from the upper end and the lower end of the inflow sample micro-control extraction part 1 to the position of the layered water inflow source drainage part 3.
In an alternative implementation manner of this embodiment, the sample separation lifting unit 11 is installed on the inflow sample micro-control separation part 1, and after the inflow sample micro-control separation part 1 is detached from the unidirectional self-locking connection part 31, the inflow sample micro-control separation part 1 is independently taken out from the sampling aquifer through the sample separation lifting unit 11.
In the embodiment, the layered water inlet source drainage part 3 is fixed with the delivery joint of the paying-off device, and the layered water inlet source drainage part 3 is delivered to the inner side of the sampling tube through the winding or stretching of the paying-off device. The sample separation lifting unit 11 is sleeved outside a thread of the paying-off device, the surface of the sample separation lifting unit 11 is connected with an independent winding drum through a wire harness, after the fact that the layered inflow water is conveyed to a sampling position from the drainage part 3 is determined, the sample separation lifting unit 11 is synchronously conveyed to the sampling position along the thread of the paying-off device until the inflow sample micro-control withdrawing part 1 reaches the upper side of the layered inflow water from the drainage part 3, and then sampling can be started.
In this embodiment, the tail end of the inflow sample micro-control pumping part 1 and the head end of the layered water inflow source drainage part 3 are both provided with electromagnetic valves, so that the electromagnetic valves are in a closed state when the inflow sample micro-control pumping part 1 and the layered water inflow source drainage part 3 are thrown into the sampling tube in order to maintain the tightness of the inflow sample micro-control pumping part 1 and the layered water inflow source drainage part 3 during sampling transmission.
The inner water sample intercepting part 2 comprises an adherence support gasket part 21, a stop surface expansion water bearing skin cavity 22 and an analysis source end expansion unit 23, the analysis source end expansion unit 23 is fixedly connected with the adherence support gasket part 21, a bucket-shaped guide cavity propelling part 24 is arranged on one side of the layered water sample intercepting part 2 and the disturbance end quantitative intercepting part 4, the output end of the bucket-shaped guide cavity propelling part 24 is fixedly connected with the analysis source end expansion unit 23, the bucket-shaped guide cavity propelling part 24 is used for pushing the analysis source end expansion unit 23 to obliquely ascend, after the stop surface expansion water bearing skin cavity 22 synchronously expands along the ascending path of the analysis source end expansion unit 23, a bucket-shaped guide surface is formed along the direction of the water inlet end of the layered water sample intercepting part 2 and the layered water sample intercepting part 4 by the stop surface expansion water bearing skin cavity 22, so that the water sample intercepted between the inner water sample intercepting part 2 and the layered water sample intercepting part 4 flows to the inner side of the layered water sample intercepting part 3 by the guide surface, and the disturbance end quantitative intercepting part is fixed on the inner side of the layered water sample intercepting part 3, and the layered water sample intercepting part 3 is further lowered, the circulation disturbance caused by the guide surface when the sampling water source enters the layered water sample intercepting part 3 is started in the layered water sample intercepting part 3 is obtained in the layered water sample intercepting part 3.
In this embodiment, after the micro-control pumping-out portion 1 of the inflow sample and the layered inflow source drainage portion 3 reach the sampling aquifer, the bucket-shaped guiding cavity pushing portion 24 pushes the analysis source end expansion unit 23 to obliquely rise, so that the cut-off surface expansion water-bearing skin cavity 22 forms a bucket-shaped guiding surface along the direction of the inflow end of the layered inflow source drainage portion 3, after the upper and lower water layers are intercepted by the analysis source end expansion unit 23 and the expansion air source supply unit 41, the water sample in the aquifer where the layered inflow source drainage portion 3is located is not subjected to the flowing pressure when the upper and lower water layers are converged, and the bucket-shaped guiding surface formed between the cut-off surface expansion water-bearing skin cavity 22 and the unidirectional self-locking connection portion 31 naturally flows and converges in the direction of the cut-off analysis source unidirectional input unit 33, so that the water sample enters the inner side of the layered inflow source drainage portion 3 in a small flow under the condition that no additional supply pressure is needed, the influence of the inverted disturbance is reduced, the stability of the volatile matter of the water sample is ensured, and the accuracy of the analysis result of the water sample is improved.
In an alternative implementation manner of this embodiment, the disturbance end quantitative shutoff portion 4 includes an expansion air source supply unit 41, a breaking isolation unit 42 and a shutoff source end expansion unit 43, the expansion air source supply unit 41 is disposed at the top of the inflow sample micro-control pumping portion 1, the outer wall of the expansion air source supply unit 41 is fixedly connected with the breaking isolation unit 42, the shutoff source end expansion unit 43 is fixedly connected with the breaking isolation unit 42, and the suction supply end of the expansion air source supply unit 41 is respectively connected with the shutoff source end expansion unit 43 and the analysis source end expansion unit 23.
In the present embodiment, the output end of the expansion gas source supply unit 41 is connected to the interception source end expansion unit 43 and the analysis source end expansion unit 23 through two independent gas supply pipes, respectively (this connection gas supply mode is a conventional technology and is not explicitly shown in the figure), and after the stratified water flows from the drainage portion 3 and the inflow sample micro-control extraction portion 1 reach the sampling area, the expansion gas source supply unit 41 outputs the gas source supply analysis source end expansion unit 23 and the interception source end expansion unit 43 for expansion. After the interception source end expansion unit 43 and the analysis source end expansion unit 23 are attached to the inner wall of the sampling tube, the water flow at the upper and lower positions of the sampling layer is intercepted by the matched sealing of the separation unit 42 and the cutoff surface expansion water bearing skin cavity 22, so that the water sample sampled by the layered water inlet source drainage part 3 is only a water source positioned in the interception space of the interception source end expansion unit 43 and the analysis source end expansion unit 23, and the singleness of the water source during sampling can be ensured.
In an alternative implementation manner of this embodiment, the unidirectional self-locking connection portion 31, the self-flowing and side-tipping guiding unit 32 and the cut-off analysis source unidirectional input unit 33 are installed on the layered water inflow source drainage portion 3, the inflow sample micro-control withdrawing portion 1 is detachably connected with the unidirectional self-locking connection portion 31, the self-flowing and side-tipping guiding unit 32 is arranged at the top end of the layered water inflow source drainage portion 3, the self-flowing and side-tipping guiding unit 32 is fixedly connected with the cut-off analysis source unidirectional input unit 33, the input end of the cut-off analysis source unidirectional input unit 33 is communicated with the layered water inflow source drainage portion 3, the analysis water source sampling end guiding module 5 is installed at the bottom of the layered water inflow source drainage portion 3 and used for guiding the layered water inflow source drainage portion 3 to be transmitted to a sampling aquifer in a directional mode, and the cut-off surface expansion water bearing leather cavity 22 is arranged between the wall-attaching support gasket portion 21 and the self-flowing and side-tipping guiding unit 32.
In this embodiment, after the layered inflow source drainage portion 3 is conveyed to the sampling position in the sampling tube through the paying-off device, the sample separation lifting unit 11 can be slid to the top of the layered inflow source drainage portion 3 along the paying-off device, at this time, electromagnetic valves of the inflow sample micro-control drainage portion 1 and the layered inflow source drainage portion 3 are in a closed state, the inflow sample micro-control drainage portion 1 and the layered inflow source drainage portion 3 are not communicated with each other until the bottom of the inflow sample micro-control drainage portion 1 reaches the inner side of the unidirectional self-locking connection portion 31, the unidirectional self-locking connection portion 31 locks and positions the inflow sample micro-control drainage portion 1 and the layered inflow source drainage portion 3, so that the cut-off source end expansion unit 43 and the analysis source end expansion unit 23 are kept at the upper end and the lower end of the fixed point aquifer, the cut-off analysis source unidirectional input unit 33 is an electromagnetic valve port, after the unidirectional self-locking connection portion 31 positions the inflow sample micro-control drainage portion 1 and the layered inflow source drainage portion 3, the cut-off analysis source unidirectional input unit 33 is electrically opened, so that the input end of the layered inflow source drainage portion 3 is in a conducting state, the water sample is in a small-level flow expansion direction, the water sample is required to be supplied to the inner side of the fixed point aquifer flow expansion unit through the cut-off section, and the water sample flow expansion unit is in a small-free section, and the cut-off flow expansion unit is in the direction of the water sample flow expansion unit, and the flow is in the direction of the flow direction of the sample.
In this embodiment, a suction pump is disposed in the inflow sample micro-control pumping part 1, and an output end of the suction pump is provided with a telescopic tube, where, in order to ensure that the telescopic tube can extend from the inner side of the inflow sample micro-control pumping part 1 to the inner side of the layered inflow source drainage part 3, a micro electric push rod is installed in the inflow sample micro-control pumping part 1, so that after the output end of the electric push rod is connected with a telescopic tube head, the telescopic tube is pushed to extend to the inner side of the layered inflow source drainage part 3 or shrink to the inner side of the inflow sample micro-control pumping part 1. After the water sample is collected from the inside of the drainage part 3, the solenoid valves of the inflow sample micro-control pumping part 1 and the stratified inflow sample micro-control pumping part 3 can be opened, the stratified inflow sample is led to the inner side of the drainage part 3 through the telescopic pipe, the water sample from the inner side of the drainage part 3 is collected into the inflow sample micro-control pumping part 1, wherein the solenoid valve of the inflow sample micro-control pumping part 1 is a one-way valve port, when the suction pump in the inner part of the inflow sample micro-control pumping part 1 collects the stratified inflow sample from the inner side of the drainage part 3 into the inflow sample micro-control pumping part 1, the water sample can be prevented from flowing back to the inner side of the stratified inflow sample from the drainage part 3, after the extraction of the collected water sample in the inflow sample micro-control pumping part 1 is completed, gas in the cut-off source end expansion unit 43 can be pumped out through the expansion gas source supply unit 41, then the one-way self-locking connecting part 31 can be used for positioning the inflow sample micro-control pumping part 1, the inflow sample micro-control pumping part 1 is carried out to the outer side of the sampling pipe through the pulling sample separation lifting unit 11, the inflow sample micro-control pumping part 1 can be screwed out from the inner side of the sample micro-control pumping part 1 through the thread separation unit 42.
In an alternative implementation manner of this embodiment, the analysis water source sampling end guiding module 5 includes a water logging sensing unit 51, a sampling pipe diameter calibration guiding unit 52, a sampling source end positioning unit 53 and a forward joint guiding unit 54, the water logging sensing unit 51 is fixedly connected to the bottom of the layered water inlet source drainage portion 3, the sampling pipe diameter calibration guiding unit 52 is sleeved on the outer side of the water logging sensing unit 51, the sampling source end positioning unit 53 and the forward joint guiding unit 54 are both disposed on the outer side of the sampling pipe diameter calibration guiding unit 52, the water logging sensing unit 51 and the forward joint guiding unit 54 are used for sliding guiding when the layered water inlet source drainage portion 3 conveys to the sampling aquifer, the water logging sensing unit 51 is provided with an electromagnetic opening and closing guide hole 511, and the electromagnetic opening and closing guide hole 511 and the sampling source end positioning unit 53 are both used for confirming whether the layered water inlet source drainage portion 3 reaches the sampling aquifer.
In this embodiment, the sampling pipe diameter calibration guide unit 52 functions as a lateral support for the stratified charge water source drain 3 when the stratified charge water source drain 3 is transported to the aquifer, for reducing the amount of inclination of the stratified charge water source drain 3 inside the sampling pipe. The forward joint guide unit 54 serves to reduce the contact sliding resistance effect when stratified inflow water is fed from the drain 3 along the inside of the sampling tube. The collecting source end positioning unit 53 is used for positioning the conveying position of the layered water inlet source drainage part 3, so that the collecting source end positioning unit 53 can stably reach the sampling area. After the acquisition source end positioning unit 53 reaches the sampling area, the electromagnetic opening and closing guide hole 511 is opened, the water immersion sensing unit 51 senses whether the water source is immersed in the cavity of the electromagnetic opening and closing guide hole 511, and whether the layered water source from the drainage part 3 reaches the sampling water source is confirmed, wherein the sensing structure of the water immersion sensing unit 51 and the sensing mode thereof are all known in the art, and are not improvement points of the invention, so the specific principle thereof is not repeated herein.
In an optional implementation manner of this embodiment, an alignment signal analysis module 311 and a pressure contact sensing unit 312 are embedded inside the unidirectional self-locking connection portion 31, the pressure contact sensing unit 312 senses a contact pressure surface of the inflow sample micro-control extraction portion 1 and the unidirectional self-locking connection portion 31, and the alignment signal analysis module 311 analyzes whether the inflow sample micro-control extraction portion 1 and the unidirectional self-locking connection portion 31 are aligned according to the contact pressure surface, so as to ensure that the assembly positions of the inflow sample micro-control extraction portion 1 and the layered inflow source drainage portion 3 are stable.
In this embodiment, the unidirectional self-locking connection portion 31 is an existing electromagnetic locking sleeve, and after the inflow sample micro-control extraction portion 1 is placed inside the unidirectional self-locking connection portion 31, the unidirectional self-locking connection portion 31 is clamped by an inner ring to achieve positioning between the inflow sample micro-control extraction portion 1 and the layered inflow source drainage portion 3.
The working principle and the using steps of the invention are as follows:
step a, the layered water inflow source drainage part 3 and the water logging sensing unit 51 are placed inside the sampling tube, the layered water inflow source drainage part 3 is sent to the sampling point through the thread extension of the thread setting-out device until the acquisition source end positioning unit 53 confirms that the layered water inflow source drainage part 3 reaches the sampling point inside the sampling tube.
And b, after the layered water inflow source drainage part 3 reaches a sampling point, sleeving the sample separation lifting unit 11 on the outer side of a thread of the paying-off device, and synchronously transmitting the sample separation lifting unit 11 to a sampling position along the thread of the paying-off device until the bottom of the inflow sample micro-control extraction part 1 reaches the inner side of the unidirectional self-locking connection part 31.
Step c, after the bottom of the inflow sample micro-control pumping part 1 reaches the inner side of the unidirectional self-locking connection part 31, the alignment signal analysis module 311 confirms whether the unidirectional self-locking connection part 31 keeps alignment with the inflow sample micro-control pumping part 1 after the pressure contact sensing unit 312 acquires a pressure signal by receiving the contact pressure transmitted by the bottom of the inflow sample micro-control pumping part 1;
Step d, after the unidirectional self-locking connection part 31 is aligned, the unidirectional self-locking connection part 31 locks and positions the inflow sample micro-control extraction part 1 and the layered water inflow source drainage part 3, and at the moment, electromagnetic valves of the inflow sample micro-control extraction part 1 and the layered water inflow source drainage part 3 are in a closed state, and the inflow sample micro-control extraction part 1 and the layered water inflow source drainage part 3 are not communicated with each other.
Step e, after the layered water inflow source is positioned between the drainage part 3 and the inflow sample micro-control pumping part 1 through the unidirectional self-locking connection part 31, the analysis source end expansion unit 23 is pushed to obliquely rise through the bucket-shaped guide cavity pushing part 24, so that the blocking surface expansion water bearing skin cavity 22 forms a bucket-shaped guide surface along the direction of the water inflow end of the layered water inflow source drainage part 3, and then the expansion air source supply unit 41 outputs an air source to supply the expansion of the analysis source end expansion unit 23 and the closure source end expansion unit 43, so that the expanded analysis source end expansion unit 23 and closure source end expansion unit 43 are matched with the blocking surface expansion water bearing skin cavity 22 of the breaking isolation unit 42 to seal and cut off water flow at the upper and lower positions of the sampling layer.
And F, after the water flow at the upper and lower positions of the sampling layer is closed and cut off, opening the valve port of the one-way input unit 33 of the cut-off analysis source, and naturally flowing and converging the water source positioned at the inner side of the cut-off region in the direction of the one-way input unit 33 of the cut-off analysis source through the bucket-shaped flow guide, so that the water sample enters the inner side of the layered water inlet self-guiding part 3 in a small flow under the condition of no additional supply pressure, the influence of the inverted disturbance on the water sample is reduced, and the stability of volatile substances of the water sample is ensured.
And G, after the sampling time length is reached, a water sample extraction signal can be sent to the inflow sample micro-control extraction part 1 through a PC end, so that the inflow sample micro-control extraction part 1 and an electromagnetic valve of the layered inflow source drainage part 3 are synchronously opened, and the water sample of the layered inflow source drainage part 3 is extracted to the inner side of the inflow sample micro-control extraction part 1 through a suction pump in the inflow sample micro-control extraction part 1.
And the H, PC end is used for pumping out the gas in the cut-off source end expansion unit 43 by controlling the expansion gas source supply unit 41, controlling the electromagnetic valves of the inflow sample micro-control pumping-out part 1 and the layered inflow source drainage part 3 to be closed, then controlling the unidirectional self-locking connecting part 31 to release the positioning of the inflow sample micro-control pumping-out part 1, winding the wire harness connected with the surface of the sample separation lifting unit 11 by the winding drum, taking out the sample separation lifting unit 11 and the inflow sample micro-control pumping-out part 1 from the pipeline, and taking out the water sample in the inflow sample micro-control pumping-out part 1.
And I, during continuous sampling, the inflow sample micro-control pumping-out part 1 is thrown into the sampling tube for the second time, and the above steps are repeated until the number of the extracted water source samples can meet the analysis requirement.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing examples, and that the foregoing description and description are merely illustrative of the principles of this invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a groundwater analysis detects with continuous sampling device, includes inflow sample micro-control pumping off portion (1) and layering water inlet source drainage portion (3), its characterized in that: an inner water sample interception part (2) is arranged between the inflow sample micro-control extraction part (1) and the layered inflow water source drainage part (3), a disturbance end quantitative interception part (4) is arranged at the top of the inflow sample micro-control extraction part (1), and the inner water sample interception part (2) and the disturbance end quantitative interception part (4) are used for intercepting a water source converging from the upper end and the lower end of the inflow sample micro-control extraction part (1) to the position of the layered inflow water source drainage part (3);
The inner water sample interception part (2) comprises an adherence support gasket part (21), a cut-off surface expansion water bearing skin cavity (22) and an analysis source end expansion unit (23), wherein the analysis source end expansion unit (23) is fixedly connected with the adherence support gasket part (21), a bucket-shaped guide cavity propelling part (24) is arranged on one side of the stratified water inflow source drainage part (3), the output end of the bucket-shaped guide cavity propelling part (24) is fixed with the analysis source end expansion unit (23), the bucket-shaped guide cavity propelling part (24) is used for pushing the analysis source end expansion unit (23) to obliquely rise, after the cut-off surface expansion water bearing skin cavity (22) synchronously expands along the rising path of the analysis source end expansion unit (23), a bucket-shaped guide surface is formed by the cut-off surface expansion water bearing skin cavity (22) along the direction of the stratified water inflow source drainage part (3), so that the intercepted water sample is led to the water inflow source from the stratified water inflow part (3) through the guide surface between the inner layer water sample interception part (2) and the disturbance end quantitative part (4), and the water sample inflow source (3) is led into the stratified water inflow source (3) from the stratified water inflow source (3) through the guide surface.
2. The continuous sampling device for groundwater analysis and detection according to claim 1, wherein: the disturbance end quantitative shutoff portion (4) comprises an expansion air source supply unit (41), a breaking isolation unit (42) and a shutoff source end expansion unit (43), wherein the expansion air source supply unit (41) is arranged at the top of the inflow sample micro-control extraction portion (1), the outer wall of the expansion air source supply unit (41) is fixedly connected with the breaking isolation unit (42), the shutoff source end expansion unit (43) is fixedly connected with the breaking isolation unit (42), and the suction supply end of the expansion air source supply unit (41) is respectively connected with the shutoff source end expansion unit (43) and the analysis source end expansion unit (23).
3. The continuous sampling device for groundwater analysis and detection according to claim 2, wherein: the device is characterized in that the stratified inflow source is provided with a unidirectional self-locking connecting part (31), an automatic inflow side-tipping guiding unit (32) and a cutoff analysis source unidirectional input unit (33) from the drainage part (3), the inflow sample micro-control extracting part (1) is detachably connected with the unidirectional self-locking connecting part (31), the automatic inflow side-tipping guiding unit (32) is arranged at the top end of the stratified inflow source drainage part (3), the automatic inflow side-tipping guiding unit (32) is fixedly connected with the cutoff analysis source unidirectional input unit (33), the input end of the cutoff analysis source unidirectional input unit (33) is communicated with the stratified inflow side-tipping guiding unit (3), an analysis water source sampling end guiding module (5) is arranged at the bottom of the stratified inflow side-tipping guiding unit (3), the analysis water source sampling end guiding module (5) is used for guiding the stratified inflow side-tipping guiding unit (3) to be transmitted to a sampling water-containing layer, and the cutoff surface expansion water-bearing skin cavity (22) is arranged between the adherence support part (21) and the automatic inflow side-tipping guiding unit (32).
4. A continuous sampling device for groundwater analysis and detection according to claim 3, wherein: the water sampling end guiding module (5) comprises a water logging sensing unit (51), a sampling pipe diameter calibration guiding unit (52), a sampling source end positioning unit (53) and a forward joint guiding unit (54), wherein the water logging sensing unit (51) is fixedly connected to the bottom of the layered water inflow source guiding part (3), the sampling pipe diameter calibration guiding unit (52) is sleeved on the outer side of the water logging sensing unit (51), the sampling source end positioning unit (53) and the forward joint guiding unit (54) are arranged on the outer side of the sampling pipe diameter calibration guiding unit (52), the water logging sensing unit (51) and the forward joint guiding unit (54) are used for sliding guiding when the layered water inflow source guiding part (3) conveys to a sampling aquifer, the water logging sensing unit (51) is provided with an electromagnetic opening and closing guide hole (511), and the electromagnetic opening and closing guide hole (511) and the sampling source end positioning unit (53) are used for confirming whether the layered water inflow source guiding part (3) reaches the sampling aquifer.
5. The continuous sampling device for groundwater analysis and detection according to claim 4, wherein: the sample separation lifting unit (11) is arranged on the inflow sample micro-control separation part (1), and after the inflow sample micro-control separation part (1) is detached from the unidirectional self-locking connecting part (31), the inflow sample micro-control separation part (1) is independently taken out from the sampling aquifer through the sample separation lifting unit (11).
6. The continuous sampling device for groundwater analysis and detection according to claim 5, wherein: the device is characterized in that an alignment signal analysis module (311) and a pressure contact sensing unit (312) are embedded in the inner side of the unidirectional self-locking connecting portion (31), the pressure contact sensing unit (312) senses the contact pressure surface of the inflow sample micro-control withdrawing portion (1) and the unidirectional self-locking connecting portion (31), and the alignment signal analysis module (311) analyzes whether the inflow sample micro-control withdrawing portion (1) and the unidirectional self-locking connecting portion (31) are aligned according to the contact pressure surface.
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2024
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| CN110779772A (en) * | 2019-10-10 | 2020-02-11 | 刘福东 | Soil underground water layered monitoring well system and well building method thereof |
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