CN110031262A - A kind of low disturbance layered sampling device of low discharge and its method of sampling - Google Patents
A kind of low disturbance layered sampling device of low discharge and its method of sampling Download PDFInfo
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- CN110031262A CN110031262A CN201910243793.2A CN201910243793A CN110031262A CN 110031262 A CN110031262 A CN 110031262A CN 201910243793 A CN201910243793 A CN 201910243793A CN 110031262 A CN110031262 A CN 110031262A
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- 238000005070 sampling Methods 0.000 title claims abstract description 257
- 238000000034 method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 239000000523 sample Substances 0.000 claims abstract description 41
- 238000012544 monitoring process Methods 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 239000004576 sand Substances 0.000 claims abstract description 8
- 210000001320 hippocampus Anatomy 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 239000003673 groundwater Substances 0.000 description 7
- 238000003911 water pollution Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000003032 molecular docking Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000000126 substance Substances 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
-
- 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
- G01N2001/1418—Depression, aspiration
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of low disturbance layered sampling device of low discharge and its method of samplings, it includes: power supply unit, frequency-variable controller, sample water storage device, array sampling apparatus sum number covers Self-expandable packer, each group sampling apparatus respectively includes sampling pump, sampling pipe, cable, monitoring probe and data line, the inlet of the liquid outlet connection sampling pipe of sampling pump, the liquid outlet of sampling pipe is connected to sampling water storage device, power supply unit and frequency-variable controller pass through cable connection, frequency-variable controller passes through the sampling pump of cable connection each group sampling apparatus respectively, monitoring probe connects computer by data line, sampling pump and monitoring probe correspond to water-bearing layer, Self-expandable packer corresponds to sealing layer, Self-expandable packer is fixed on be arranged sampling pipe by pallet grippers group, each sampling pump includes the spiral shell that envelope outer diameter is less than or equal to 50mm Bar immersible pump and drop stream sand control installation, so that the sampling pump flow control, in 0-5L/min, the sampling pipe of each group sampling apparatus is fixed at well head by well head fixture.
Description
Technical field
The invention belongs to underground water pollution monitoring and prevention and control fields more particularly to a kind of low disturbance stratified sampling of low discharge to fill
It sets and its method of sampling.
Background technique
Underground water is as important drinking water source, especially in Beijing-tianjin-hebei Region, underground water account for the 70% of drinking water ratio with
On, protection work is particularly important.As the basic link in underground water pollution monitoring net, sampling and monitoring device are to determine ground
One of the key link of lower water pollution monitoring accuracy.
Traditional single mixed layer sample mode is larger by the seasonal fluctuations or precipitation influence of fluctuations of direction of groundwater flow, and
There are the cone of depression of large area in the underground water of Beijing-tianjin-hebei Region, significant by Rainfall Influence fluctuation, have to Groundwater chemical fields
Significantly affect, to underground water Pollution Plume and pollution level description can generate more serious deviation.Therefore, to the same sampled point
Different depth carry out stratified sampling and monitoring more accurately and reliably can monitor and verify pollutant actual migration spy
Sign.
Meanwhile common groundwater sampling equipment domestic at present is mainly Beile's pipe, gripping-type sampler, negative pressure hoisting type
Sampler, high-power electric immersible pump, inertia elevator pump etc., sampled part passes through water-bearing layer or strong repeatedly in sampling process
Water-bearing layer is stirred, it is larger to water table disturbance, so that the organic pollutant volatilization contained in water, and lead to Different Strata or contain
The cross contamination of underground water water sample between water layer, the water sample of acquirement are not enough to represent the practical pollution condition of a certain depth.
Therefore, it is the different depth stratified sampling for realizing the same sampled point, more accurately understands and verify pollutant
Actual migration feature, be badly in need of carrying out low discharge low disturbance layered sampling device research and development, improve what China's underground water pollution monitored
Technical level provides technical support and equipment Safeguard to establish the construction of Jing-jin-ji region underground water pollution monitoring net.
Summary of the invention
The object of the present invention is to provide a kind of low disturbance layered sampling device of low discharge and its method of samplings, relative to tradition
Sampling apparatus and the method for sampling, to underground reservoir disturb it is smaller, can satisfy inorganic component, organic component, microorganism,
The acquisition of the test samples such as dissolved oxygen requires, and sampling is continuous reliable, and obtaining in the slave monitoring well of energy efficient has each layer generation
The groundwater sample of table.
To reach above-mentioned purpose, the invention adopts the following technical scheme:
A kind of low disturbance layered sampling device of low discharge, it include: power supply unit, frequency-variable controller, sampling water storage device,
Array sampling apparatus sum number covers Self-expandable packer, and each group sampling apparatus respectively includes sampling pump, sampling pipe, cable, monitoring spy
Head and data line, the inlet of the liquid outlet connection sampling pipe of sampling pump, the liquid outlet of sampling pipe and the sampling water storage device
The corresponding connection of memory space, by cable connection, which passes through respectively for the power supply unit and the frequency-variable controller
The sampling pump of cable connection each group sampling apparatus, the monitoring probe connect computer, sampling pump and monitoring probe by data line
Corresponding water-bearing layer, the Self-expandable packer correspond to sealing layer, and the Self-expandable packer is fixed on institute by pallet grippers group
On the sampling pipe being arranged, respectively the sampling pump is the screw submersible pump that envelope outer diameter is less than or equal to 50mm, screw submersible pump installation
There is drop stream sand control installation, so that the Minimum Flow Control of the sampling pump is in 0-5L/min, the sampling of sampling apparatus described in each group
Pipe is fixed at well head by well head fixture.
Preferably, titting water outlet, the screw rod diving are connected in the top end cap of the pump case of the screw submersible pump
The motor bottom of pump is equipped with bottom fitting；The titting water outlet and the motor bottom connector are for installing drop stream sand control dress
Set, which includes toroidal shell, which includes connected shell and inner casing, the shell and the inner casing it
Between form first annular channel, which is located in the annular housing of the inner casing, shape between the inner casing and the screw pump
At the second circular passage, it is equipped with level-one filter pipe in the lower end of the shell, the upper end of the inner casing is equipped with second level filter pipe.
Preferably, interval is arranged two sets of drop stream devices on the transmission shaft of the upper end of the water inlet pipe of the screw submersible pump, should
The pump case of drop stream device and the screw submersible pump is connected, and respectively the drop stream device opens up vertical drop discharge orifice, at the bottom of vertically drop discharge orifice
Portion and top are equipped with the strainer for reducing water flow, are arranged on the transmission shaft of the lower end of the water inlet pipe of the screw submersible pump
There is the sealing device for preventing sandstone from entering motor.
Self-expandable packer is equipped with several holes for passing through for sampling pipe, data line and cable, several holes respectively with this from
The position that expansion insulates each through-hole in corresponding pallet grippers group corresponds.
The sampling apparatus is three groups, and the Self-expandable packer is two sets, the sampling pump and prison of first group of sampling apparatus
Probing head corresponds to the water-bearing layer above first set Self-expandable packer, and the sampling pump and monitoring probe of second group of sampling apparatus are located at
Water-bearing layer between first set Self-expandable packer and second set of Self-expandable packer, the sampling pump and prison of third group sampling apparatus
Water-bearing layer below the corresponding second set of Self-expandable packer of probing head, the pallet grippers include single tube pallet grippers group and two-tube
Pallet grippers group, first set Self-expandable packer are fixed in the sampling of second group of sampling apparatus by two-tube pallet grippers group
On the sampling pipe of pipe and the third group sampling apparatus, the sampling of second set of sampling apparatus and third set sampling apparatus
Pipe, data line and cable both pass through first set Self-expandable packer and two-tube pallet grippers group, and second set of Self-expandable packer is logical
It crosses single tube pallet grippers group to be fixed on the sampling pipe of third group sampling apparatus, sampling pipe, the electricity of the third set sampling apparatus
Cable and data line both pass through second set of Self-expandable packer and single tube pallet grippers group.
The two-tube pallet grippers group includes the identical two-tube pop-up plate clamp of structure and two-tube subiculum plate clamp, this is two-tube
Pop-up plate clamp is pressed against above first set Self-expandable packer, which supports seals in the first set self-expanding
Below device, which includes two two-tube half pallet grippers units being correspondingly connected with, two-tube half tray clamps
Tool unit includes two-tube half limit supporting plate and two-tube half tube body clamping plate, the two-tube half tube body clamping plate is corresponding be connected in this two-tube half
The roof of supporting plate is limited, the wall surface of the two-tube half limit supporting plate is pressed against the top of first set Self-expandable packer, this is two-tube
Half limit supporting plate sets that there are two the through-hole that the arcuate slot A being spaced and several current supply cables and data line pass through, two-tube half tube bodies
Clamping plate includes two connected curved splint A, and interior connecting plate is equipped between the inside of two curved splint A, and two curved splint A's is outer
Side is separately connected outside link plate, the wall surface of two arcuate slot A of the two-tube half limit supporting plate and the inner wall of two curved splint A
Face corresponds, and is equipped with the perforation worn for bolt on the interior connecting plate and the outside link plate.
The single tube pallet grippers group includes the identical single tube pop-up plate clamp of structure and single tube subiculum plate clamp, the single tube
Pop-up plate clamp is pressed against above second set of Self-expandable packer, which supports in second set of self-expanding envelope
Below device, which includes two single tubes being correspondingly connected with, half pallet grippers unit, half pallet grippers of single tube
Unit includes that single tube half limits supporting plate and half tube body clamping plate of single tube, and the half tube body clamping plate of single tube correspondence is connected in single tube and partly limits support
The roof of plate, the wall surface that the single tube half limits supporting plate are pressed against the top of second set of Self-expandable packer, and the single tube half limits
Supporting plate is equipped with several through-holes that an arcuate slot B and current supply cable and data line pass through, which includes an arc
The two sides of clamping plate B, curved splint B are respectively equipped with connecting plate, and the single tube half limits the wall surface and arc of the arcuate slot B of supporting plate
The inner wall of clamping plate B is corresponding, is respectively equipped with the perforation worn for bolt on the connecting plate.
The well head fixture includes the hole passed through for sampling pipe, cable and data line, across the well head fixture of sampling pipe
Aperture it is consistent with the outer diameter of the sampling pipe, the female connector outer diameter of the sampling pipe is greater than the aperture of well head fixture corresponding aperture, should
The female connector of sampling pipe is stuck in the top of the well head fixture.
The sampling pipe of the sampling apparatus be several sampling pipe units formed by male and female screwed connection, by O-ring into
Row sealing, each material for sampling pipe unit are PVC-U.
Use the method for sampling of the low disturbance layered sampling device of low discharge described in any of the above-described technical solution:
A. according to drilling stratified sampling requirement, determining needs the low disturbance layered sampling device quantity of low discharge to be mounted.By
On down, tripping in third covers layered sampling device (bottommost) first, after sampling pump is connect with outlet pipe in lower going-into-well, and
Corresponding bottom water sealing horizon is set and installs second set of Self-expandable packer and single tube pallet grippers group on the sampling pipe at place, installation
After the completion, continue second set of layered sampling device of tripping in, after transferring to predetermined position, by the sampling of second set of layered sampling device
Pump is connect with outlet pipe, together with first set layered sampling device in lower going-into-well, and installs second in corresponding sealing position
Self-expandable packer is covered, is fixed on outlet pipe with pallet grippers, and so on, until in whole lower going-into-wells, it will be more with fixture
The low disturbance layered sampling device of group low discharge is fixed on well head.
B. after the installation is completed, 48-72h is stood, after Self-expandable packer expands completely, examines circuitry connection and pipe
After road system, valve and instrument are all normal, the power supply unit for starting earth's surface makes the low disturbance sampling pump start-up operation of low discharge, first
It is adjusted to maximum by pump discharge is sampled by frequency-variable controller, original mixed sample in well casing is displaced, passes through monitoring probe
Water quality and SEA LEVEL VARIATION are observed with landscape display apparatus, after being determined as the true water sample in stratum, by frequency-variable controller by flow tune
Section carries out water sampling to 0-5L/min.After work of drawing water, closing power supply unit makes sampling pump stop working, and closes
Landscape display apparatus.
Beneficial effects of the present invention:
1) the low disturbance layered sampling device of low discharge of the invention disturbs aquifer smaller, can satisfy inorganic
The acquisition of the test samples such as component, organic component, microorganism, dissolved oxygen requires, and obtaining in the slave monitoring well of energy efficient has
Each representative groundwater sample of layer.
2) the low disturbance layered sampling device of low discharge of the invention has the advantages such as easy for installation, sealing is reliable, is applicable in deep
Degree is within 120m.
3) the low disturbance layered sampling device of low discharge of the invention can collect different water cut layer water from one borehole
Sample can effectively save drilling occupied area and construction cost.
4) the low disturbance layered sampling device of low discharge of the present invention connects remote automatic control device, may be implemented remotely to control
Sampling and monitoring reduce interference from human factor, time saving and energy saving.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the low disturbance layered sampling device of low discharge of the present invention.
Figure 1A is the structural schematic diagram of sampling pump.
Fig. 2A is the schematic view of the front view of the two-tube pop-up plate clamp of two-tube pallet grippers group.
Fig. 2 B is the overlooking structure diagram of Fig. 2A.
Fig. 2 C is the schematic view of the front view of first set Self-expandable packer of the invention.
Fig. 2 D is the overlooking structure diagram of Fig. 2 C.
Fig. 3 A is the schematic view of the front view of the single tube pop-up plate clamp of single tube pallet grippers group.
Fig. 3 B is the overlooking structure diagram of Fig. 3 A.
Fig. 3 C is the schematic view of the front view of second set of Self-expandable packer of the invention.
Fig. 3 D is the overlooking structure diagram of Fig. 3 C.
Fig. 4 is the structural schematic diagram of well head fixture.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described further.
As shown in Figures 1 to 4, the low disturbance layered sampling device of a kind of low discharge, it includes: power supply unit 1, frequency control
Device 2, sampling water storage device 3, array sampling apparatus sum number cover Self-expandable packer, and each group sampling apparatus 4 respectively includes sampling pump
41, the liquid outlet of sampling pipe 42, cable 43, monitoring probe 44 and data line 45, sampling pump 41 passes through ring flange or screwed connection
The inlet of sampling pipe 42, the connection corresponding with the sampling memory space of water storage device 3 of the liquid outlet of sampling pipe 42, the power supply
Equipment 1 and the frequency-variable controller 2 are connected by cable 43, which connects each group sampling cartridge by cable 43 respectively
The motor for the sampling pump 41 set, the monitoring probe 44 connect computer 46, sampling pump 41 and monitoring probe 44 by data line 45
Corresponding water-bearing layer 4A, the corresponding sealing layer 6 of Self-expandable packer 5, which is expanded rubber bucket, rubber strip or two
Person's combination；The Self-expandable packer 5 is fixed on be arranged sampling pipe 42 by pallet grippers group, and respectively the sampling pump 41 is
Envelope outer diameter is less than or equal to the screw submersible pump of 50mm, which is equipped with drop stream sand control installation, so that the sampling
In 0-5L/min, the sampling pipe of sampling apparatus described in each group is fixed at well head the Minimum Flow Control of pump by well head fixture 9.
Frequency-variable controller 2 has the function of adjusting sampling pump motor speed, the Minimum Flow Control of sampling pump can be arrived
0-5L/min, the minimum discharge is very small to ground disturbance, can satisfy inorganic component, organic component, microorganism, dissolved oxygen etc.
Test sample acquisition requires, and realizes the low disturbance sampling of low discharge.
As shown in Figure 1A, the sampling pump 41 is drop stream sand control screw submersible pump, on the top of the pump case of the screw submersible pump
Portion's end cap is connected with titting water outlet 413, and the motor bottom of the screw submersible pump is equipped with bottom fitting 414；The outlet pipe
Connector 413 and the bottom fitting 414 are for installing drop stream sand control installation, which includes toroidal shell, the ring
Shape shell includes shell 411 and inner casing 412, forms first annular channel between the shell 411 and the inner casing 412, and the screw rod is latent
Water pump is located in the annular housing of the inner casing 412, forms the second circular passage between the inner casing 412 and the screw submersible pump,
The lower end of the shell 411 is equipped with level-one filter pipe 4111, and the upper end of the inner casing 412 is equipped with second level filter pipe 4121.
The toroidal shell uses half box-like structure, is connect by the bottom that screw is fixed in titting water outlet and motor
Head.
The screw submersible pump includes pump case 411A, rubber bushing 411B, screw rod 411C, eccentric shaft coupling 411D, transmission
Axis 411E and motor 411F；The end cap lower part is axially arranged with rubber bushing, and screw slot, the screw rod are equipped with inside the rubber bushing
Slot for installing screw rod, the screw rod by with transmission axis connection, which is connected to motor.
Interval is arranged two sets of drop stream devices on the transmission shaft 411E of the upper end of the water inlet pipe 4110 of the screw submersible pump
4113, the pump case of the drop stream device and the screw submersible pump is connected, and respectively the drop stream device opens up vertical drop discharge orifice 4114, vertical
Biography of the bottom and top of discharge orifice equipped with the strainer for reducing water flow, in the lower end of the water inlet pipe of the screw submersible pump drops
The sealing device 4115 for preventing sandstone from entering motor 411F is arranged on moving axis 4112.
As shown in Fig. 2A to Fig. 3 D, the Self-expandable packer is passed through equipped with the hole passed through for sampling pipe, for data line
Hole and the hole that passes through of current supply cable distinguish each lead to the hole site in corresponding pallet grippers group and correspond up and down.
The sampling pipe of the sampling apparatus is that several sampling pipe units are formed by screwed connection, each material for sampling pipe unit
Matter is PVC-U.
Preferably, as shown in Figure 1, the sampling apparatus 4 is three groups, the Self-expandable packer 5 is two sets, from top to bottom
Successively it is known as the sampling pump of the first, second, third, the first group of sampling apparatus and monitoring probe corresponds to first set Self-expandable packer
The water-bearing layer of top, the sampling pump and monitoring probe of second group of sampling apparatus be located at first set Self-expandable packer and second set from
Water-bearing layer between swell packers, the corresponding second set of Self-expandable packer of the sampling pump and monitoring probe of third group sampling apparatus
The water-bearing layer of lower section, the pallet grippers include single tube pallet grippers group and two-tube pallet grippers group, first set self-expanding packing
Device 51 is fixed in the sampling pipe and the third group sampling apparatus of second group of sampling apparatus by two-tube pallet grippers group 7
On sampling pipe, sampling pipe, data line and the cable of second set of sampling apparatus and third set sampling apparatus both pass through first
Cover Self-expandable packer and its two-tube pallet grippers group, second set of Self-expandable packer is fixed in the by single tube pallet grippers group
On the sampling pipe of three groups of sampling apparatuses, sampling pipe, cable and the data line of the third set sampling apparatus both pass through second set certainly
Swell packers and its single tube pallet grippers group.
Layering sealing is carried out by Self-expandable packer 5, the material of Self-expandable packer 5 can be hydro-expansive rubber cylinder
Or rubber strip, it is able to carry out permanent envelope and sets every, installation site with drilling water sealing horizon corresponding, be fixed on pair by pallet grippers
On the sampling pipe 2 answered.
As shown in Fig. 2 C, Fig. 2 D, Fig. 3 C and Fig. 3 D, Self-expandable packer 5 is needed according to sampling pipe 42, the cable 43 passed through
And the quantity of data line 45 shifts to an earlier date the quantity of providing holes, the diameter in hole sampling pipe 42, cable 43 and data line 45 can be passed through,
It can guarantee that packing effect is advisable again.
The two-tube pallet grippers group includes the identical two-tube pop-up plate clamp of structure and two-tube subiculum plate clamp, this is two-tube
Pop-up plate clamp is pressed against above first set Self-expandable packer, which supports seals in the first set self-expanding
Below device, as shown in Figure 2 A and 2 B, which includes the two-tube half pallet grippers unit of two docking
71, two two-tube half pallet grippers units 71 are adopted by the common clamping sampling pipe and third set in second set of sampling apparatus of bolt
The outer wall of the sampling pipe of sampling device, the two-tube half pallet grippers unit 71 include two-tube half limit supporting plate 711 and two-tube half tube body
Clamping plate 712 can be integrally formed, the corresponding roof for being connected in the two-tube half limit supporting plate 711 of the two-tube half tube body clamping plate 712,
The wall surface of the two-tube half limit supporting plate 711 is pressed against the top of first set Self-expandable packer 5, the two-tube half limit supporting plate
711 include arc platysome, opened up at the straight flange of the arc platysome there are two be spaced arcuate slot A7110, in the arc
The through-hole that several current supply cables and data line pass through separately is opened up on shape platysome, which is in the plate of bending-like
Sheet is equipped with interior connecting plate 7121 including two connected curved splint A7120 between the inside of two curved splint A7120, and two
Outside link plate 7122 is separately connected on the outside of curved splint A7120, two arcuate slot A7110's of the two-tube half limit supporting plate
The inner wall of wall surface and two curved splint A7120 correspond, and are all provided on the interior connecting plate 7121 and the outside link plate 7122
There is a perforation worn for bolt, the sampling pipe of second set of sampling apparatus and the sampling pipe of third set sampling apparatus are corresponding across docking
Two two-tube half pallet grippers units be formed by two ducts.The two-tube subiculum plate clamp and the two-tube pop-up plate clamp are symmetrical
The upper and lower that first set Self-expandable packer is set.What two-tube pallet grippers group was passed through for sampling pipe, cable and digit punch
Hole is corresponding with the hole of corresponding Self-expandable packer.
The single tube pallet grippers group includes the identical single tube pop-up plate clamp of structure and single tube subiculum plate clamp, the single tube
Pop-up plate clamp is pressed against second set of Self-expandable packer, 5 top, which supports in second set of self-expanding
Below packer, as shown in Figure 3A and Figure 3B, which includes the half pallet grippers unit of single tube of two docking
81, half pallet grippers unit 81 of single tube includes that single tube half limits supporting plate 811 and half tube body clamping plate 812 of single tube, half tube body of single tube
The corresponding roof for being connected in single tube half and limiting supporting plate 812 of clamping plate 812, the wall surface that the single tube half limits supporting plate 812 are pressed against the
The top of two sets of Self-expandable packers 5, the single tube half limit supporting plate 811 be equipped with an arcuate slot B8110 and several current supply cables and
The through-hole that data line passes through, the half tube body clamping plate 812 of single tube include a curved splint B8120, and the two sides of curved splint B are distinguished
Equipped with connecting plate 8121, the wall surface for the arcuate slot B that the single tube half limits supporting plate 811 is corresponding with the inner wall of curved splint B, respectively
The perforation worn for bolt is equipped on the connecting plate 8121.The sampling pipe of third group sampling apparatus passes through two connected single tubes
Half pallet grippers unit is formed by duct.The single tube subiculum plate clamp and the single tube pop-up plate clamp are symmetrically arranged in second
Cover the upper and lower of Self-expandable packer.The hole that single tube pallet grippers group is passed through for sampling pipe, cable and digit punch with it is corresponding from
The hole of swell packers is corresponding.
As shown in figure 4, the well head fixture 9 includes pallet 91, offered on the pallet 91 for sampling pipe, cable sum number
The through-hole passed through according to line；The size of the pallet is greater than the size of well head, and the aperture across the well head fixture of sampling pipe is adopted with this
The outer diameter of sample pipe is consistent, and the female connector outer diameter of the sampling pipe is greater than the aperture of well head fixture corresponding aperture, the female thread of the sampling pipe
Connector is taken in the top of the well head fixture.
The present invention can carry out the quantity of sampling layering, such as two layers of sampling as the case may be, and three layers of sampling or multilayer are adopted
Sample, corresponding sampling apparatus is arranged.
The application method of the low disturbance layered sampling device of low discharge of the invention is described below, it includes the following steps:
A. according to drilling stratified sampling requirement, from bottom to top, the sampling apparatus (bottommost) of tripping in third group first, by it
After sampling pump is connect with sampling pipe in lower going-into-well, and second set of self-expanding packing is installed at corresponding bottom sealing position
Device, and be fixed on corresponding sampling pipe with single tube pallet grippers group, after being installed, continue tripping in third group sampling apparatus,
After transferring to predetermined position, the sampling pump of second group of sampling apparatus is connect with sampling pipe, is removed with third group sampling apparatus one
Enter in well, and first set Self-expandable packer is installed in corresponding sealing position, is fixed on sampling with two-tube pallet grippers group
Guan Shang, and so on, until the low disturbance layered sampling device of low discharge is fixed on well with well head fixture in whole lower going-into-wells
Mouthful.
B. after the installation is completed, stand 48h-72h, after Self-expandable packer expand completely, examine circuitry connect and
After pipe-line system is all normal, the power supply unit for starting earth's surface makes sampling pump start to work, and will be sampled by frequency-variable controller first
Pump discharge is adjusted to maximum, displaces original mixed sample in well casing, observes water quality and water by monitoring probe and computer
Flow after being determined as the true water sample in stratum, is adjusted to minimum (0-5L/min) by frequency-variable controller, carries out water sample by position variation
Acquisition.After work of drawing water, closing power supply unit makes sampling pump stop working, and closes landscape display apparatus.
The low mechanism for disturbing layered sampling device and method of low discharge of the present invention are as follows: will be each aqueous by Self-expandable packer
Layer is permanent to be separated, and carries out big flow well-flushing by the low disturbance sampling pump of low discharge, until after the true water sample in stratum is cemented out,
Flow is adjusted to minimum (0-5L/min) by frequency-variable controller, carries out the low disturbance sampling of low discharge, the slave prison of efficient
Obtaining in well logging has the representative groundwater sample of each layer, meets the inspection such as inorganic component, organic component, microorganism, dissolved oxygen
Sample acquisition requires, and provides technical support for groundwater monitoring and prevention and cure of pollution.
The above is presently preferred embodiments of the present invention and its technical principle used, for those skilled in the art
For, without departing from the spirit and scope of the present invention, any equivalent change based on the basis of technical solution of the present invention
Change, simple replacement etc. is obvious changes, all fall within the protection scope of the present invention.
Claims (10)
1. a kind of low disturbance layered sampling device of low discharge, it is characterised in that: it includes: power supply unit, frequency-variable controller, sampling
Water storage device, array sampling apparatus sum number cover Self-expandable packer, and each group sampling apparatus respectively includes sampling pump, sampling pipe, electricity
Cable, monitoring probe and data line, the inlet of the liquid outlet connection sampling pipe of sampling pump, the liquid outlet of sampling pipe and the sampling
The corresponding connection of the memory space of water storage device, the power supply unit and the frequency-variable controller pass through cable connection, the frequency-variable controller
Respectively by the sampling pump of cable connection each group sampling apparatus, which connects computer by data line, sampling pump with
Monitoring probe corresponds to water-bearing layer, and the Self-expandable packer corresponds to sealing layer, and the Self-expandable packer passes through pallet grippers group
It is fixed on be arranged sampling pipe, respectively the sampling pump is the screw submersible pump that envelope outer diameter is less than or equal to 50mm, and the screw rod is latent
Water pump is equipped with drop stream sand control installation, so that the Minimum Flow Control of the sampling pump is in 0-5L/min, sampling cartridge described in each group
The sampling pipe set is fixed at well head by well head fixture.
2. the low disturbance layered sampling device of low discharge according to claim 1, it is characterised in that: in the screw submersible pump
The top end cap of pump case be connected with titting water outlet, the motor bottom of the screw submersible pump is equipped with bottom fitting；It is described go out
For installing drop stream sand control installation, which includes toroidal shell, should for water pipe head and the motor bottom connector
Toroidal shell includes connected shell and inner casing, and first annular channel is formed between the shell and the inner casing, the screw submersible pump
In the annular housing of the inner casing, the second circular passage is formed between the inner casing and the screw pump, is set in the lower end of the shell
There is level-one filter pipe, the upper end of the inner casing is equipped with second level filter pipe.
3. the low disturbance layered sampling device of low discharge according to claim 2, it is characterised in that: the screw submersible pump
Interval is arranged two sets of drop stream devices on the transmission shaft of the upper end of water inlet pipe, and the pump case of the drop stream device and the screw submersible pump is solid
Even, respectively the drop stream device opens up vertical drop discharge orifice, is equipped in the bottom and top of vertically drop discharge orifice for reducing water flow
Strainer is arranged with the sealing dress for preventing sandstone from entering motor on the transmission shaft of the lower end of the water inlet pipe of the screw submersible pump
It sets.
4. the low disturbance layered sampling device of low discharge according to claim 1, it is characterised in that: set on Self-expandable packer
There are a several holes passed through for sampling pipe, data line and cable, several holes pallet grippers group corresponding with self-expanding packing respectively
On each through-hole position correspond.
5. the low disturbance layered sampling device of low discharge according to claim 4, it is characterised in that: the sampling apparatus is three
Group, the Self-expandable packer are two sets, and the sampling pump and monitoring probe of first group of sampling apparatus correspond to first set self-expanding and seal
Water-bearing layer above device, the sampling pump and monitoring probe of second group of sampling apparatus are located at first set Self-expandable packer and second
Cover the water-bearing layer between Self-expandable packer, the corresponding second set of self-expanding envelope of the sampling pump and monitoring probe of third group sampling apparatus
Water-bearing layer below device, the pallet grippers include single tube pallet grippers group and two-tube pallet grippers group, first set self-expanding
Packer is fixed in the sampling pipe and the third group sampling apparatus of second group of sampling apparatus by two-tube pallet grippers group
Sampling pipe on, sampling pipe, data line and the cable of second set of sampling apparatus and third set sampling apparatus both pass through the
A set of Self-expandable packer and two-tube pallet grippers group, second set of Self-expandable packer are fixed in by single tube pallet grippers group
On the sampling pipe of three groups of sampling apparatuses, sampling pipe, cable and the data line of the third set sampling apparatus both pass through second set certainly
Swell packers and single tube pallet grippers group.
6. the low disturbance layered sampling device of low discharge according to claim 5, it is characterised in that: the two-tube pallet grippers
Group includes the identical two-tube pop-up plate clamp of structure and two-tube subiculum plate clamp, which is pressed against first set certainly
Above swell packers, which is supported below the first set Self-expandable packer, the two-tube pop-up disk folder
Tool includes two two-tube half pallet grippers units being correspondingly connected with, which includes two-tube half limit supporting plate
With two-tube half tube body clamping plate, the corresponding roof for being connected in the two-tube half limit supporting plate of the two-tube half tube body clamping plate, this two-tube half
The wall surface of limit supporting plate is pressed against the top of first set Self-expandable packer, which sets that there are two be spaced
The through-hole that arcuate slot A and several current supply cables and data line pass through, the two-tube half tube body clamping plate include two connected arc folders
Plate A is equipped with interior connecting plate between the inside of two curved splint A, is separately connected outside link plate on the outside of two curved splint A, this pair
The wall surface of two arcuate slot A of half limit supporting plate of pipe is corresponded with the inner wall of two curved splint A, the interior connecting plate and
The perforation worn for bolt is equipped on the outside link plate.
7. the low disturbance layered sampling device of low discharge according to claim 5 or 6, it is characterised in that: the single tube pallet
Fixture group includes the identical single tube pop-up plate clamp of structure and single tube subiculum plate clamp, which is pressed against second
It covers above Self-expandable packer, which supports below second set of Self-expandable packer, the single tube pop-up
Plate clamp includes two single tubes being correspondingly connected with, half pallet grippers unit, and half pallet grippers unit of single tube includes that single tube partly limits support
Half tube body clamping plate of plate and single tube, the corresponding roof for being connected in single tube half and limiting supporting plate of the half tube body clamping plate of single tube, the single tube half limit
The wall surface of position supporting plate is pressed against the top of second set of Self-expandable packer, and the single tube half limits supporting plate and is equipped with an arcuate slot B
The several through-holes passed through with current supply cable and data line, the half tube body clamping plate of single tube include a curved splint B, curved splint B's
Two sides are respectively equipped with connecting plate, and the wall surface for the arcuate slot B that the single tube half limits supporting plate is corresponding with the inner wall of curved splint B,
Respectively the perforation worn for bolt is equipped on the connecting plate.
8. the low disturbance layered sampling device of low discharge according to claim 1, it is characterised in that: the well head fixture includes
Pallet offers the hole passed through for sampling pipe, cable and data line on the pallet, across the aperture of the well head fixture of sampling pipe
Consistent with the outer diameter of the sampling pipe, the female connector outer diameter of the sampling pipe is greater than the aperture of well head fixture corresponding aperture, the sampling pipe
Female connector block the top of the well head fixture.
9. the low disturbance layered sampling device of low discharge according to claim 1, it is characterised in that: the sampling apparatus is adopted
Sample pipe is that several sampling pipe units are formed by male and female screwed connection, is sealed by O-ring, each material for sampling pipe unit
For PVC-U.
10. a kind of use claim 1 to the sampling of the low disturbance layered sampling device of the described in any item low discharges of claim 9
Method:
A. according to drilling stratified sampling requirement, determining needs the low disturbance layered sampling device quantity of low discharge to be mounted.By lower
On, tripping in third covers layered sampling device (bottommost) first, after sampling pump is connect with outlet pipe in lower going-into-well, and opposite
It answers bottom water sealing horizon to set and second set of Self-expandable packer and single tube pallet grippers group is installed on the sampling pipe at place, be installed
Afterwards, continue second set layered sampling device of tripping in, after transferring to predetermined position, by the sampling pump of second set of layered sampling device and
Outlet pipe connection together with first set layered sampling device in lower going-into-well, and installs second set certainly in corresponding sealing position
Swell packers are fixed on outlet pipe with pallet grippers, and so on, until in whole lower going-into-wells, it is with fixture that multiple groups are low
The low disturbance layered sampling device of flow is fixed on well head.
B. after the installation is completed, 48-72h is stood, after Self-expandable packer expands completely, examines circuitry connection and pipeline system
System, after valve and instrument are all normal, the power supply unit for starting earth's surface makes the low disturbance sampling pump start-up operation of low discharge, passes through first
Frequency-variable controller is adjusted to maximum for pump discharge is sampled, and displaces original mixed sample in well casing, passes through monitoring probe and ground
Table shows equipment observation water quality and SEA LEVEL VARIATION, after being determined as the true water sample in stratum, is adjusted to flow by frequency-variable controller
0-5L/min carries out water sampling.After work of drawing water, closing power supply unit makes sampling pump stop working, and closes earth's surface
Show equipment.
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| CN111549743A (en) * | 2020-05-13 | 2020-08-18 | 交通运输部天津水运工程科学研究所 | Water pumping type profile sediment automatic monitoring method and monitoring device thereof |
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| CN112557107A (en) * | 2020-10-30 | 2021-03-26 | 上海市政工程设计研究总院（集团）有限公司 | Underground water layered sampling system and method for layered sampling by using same |
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| CN111549743A (en) * | 2020-05-13 | 2020-08-18 | 交通运输部天津水运工程科学研究所 | Water pumping type profile sediment automatic monitoring method and monitoring device thereof |
| CN111663929A (en) * | 2020-05-25 | 2020-09-15 | 中国石油天然气股份有限公司 | Multi-section fractured horizontal well production profile testing pipe column |
| CN112557107A (en) * | 2020-10-30 | 2021-03-26 | 上海市政工程设计研究总院（集团）有限公司 | Underground water layered sampling system and method for layered sampling by using same |
| CN113340659A (en) * | 2021-06-09 | 2021-09-03 | 扬州市职业大学(扬州市广播电视大学) | Environment monitoring river silt sampling device |
| CN114660254A (en) * | 2022-04-01 | 2022-06-24 | 中国地质调查局水文地质环境地质调查中心 | In-situ layered online monitoring system and prediction method for field groundwater pollution |
| WO2024026961A1 (en) * | 2022-08-02 | 2024-02-08 | 中国地质调查局水文地质环境地质调查中心 | Portable intelligent low-disturbance sampling apparatus |
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| CN116480343A (en) * | 2023-06-14 | 2023-07-25 | 山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队) | Underground water layering monitoring well and well forming method thereof |
| CN116480343B (en) * | 2023-06-14 | 2023-09-05 | 山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队) | Underground water layering monitoring well and well forming method thereof |
| CN116448624B (en) * | 2023-06-16 | 2023-09-29 | 山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队) | Soil stratum pollutant monitoring system and method |
| CN116448624A (en) * | 2023-06-16 | 2023-07-18 | 山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队) | Soil stratum pollutant monitoring system and method |
| CN118443384A (en) * | 2024-07-04 | 2024-08-06 | 山东省地矿工程勘察院(山东省地质矿产勘查开发局八〇一水文地质工程地质大队) | Continuous sampling device for groundwater analysis and detection |
| CN118443384B (en) * | 2024-07-04 | 2024-09-03 | 山东省地矿工程勘察院(山东省地质矿产勘查开发局八〇一水文地质工程地质大队) | Continuous sampling device for groundwater analysis and detection |
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