CN111912663A - Depth-setting water sample collecting device and method thereof - Google Patents

Abstract

The invention provides a depth-setting water sample collecting device and a method thereof, wherein the device comprises: the device comprises a lifting assembly and a fixed-depth sampling assembly, wherein one end of the lifting assembly is connected with the fixed-depth sampling assembly; the depthkeeping sample subassembly includes: the sampler comprises a sampler and a fixed-depth sealing assembly arranged on a sampling port of the sampler, wherein the fixed-depth sealing assembly is used for controlling the opening and closing of the sampling port of the sampler at a preset depth; the depthkeeping water sample collection system passes through depthkeeping sample subassembly and is connected with the lifting means, has realized the purpose of depthkeeping sample, has solved the relatively poor problem of depthkeeping sample reliability when drilling depth surpasses 100 meters that mentions among the prior art.

Description

Depth-setting water sample collecting device and method thereof

Technical Field

The invention belongs to the field of stratum water sample collection, and particularly relates to a depth-setting water sample collection device and a depth-setting water sample collection method.

Background

In order to research and analyze the water quality change rule of each aquifer in the stratum, the ground hydrological observation hole needs to be subjected to depth-fixed sampling.

At present, water level on-line monitoring equipment is all installed to huai nan mining area ground hydrology observation hole, and drilling depth is in several hundred meters deeply, along with drilling depth's the downthehole quality of water change greatly, need carry out the quality of water of the different degree of depth of depthkeeping sample analysis degree of depth. In the prior art, the depth of water is judged by depending on human hearing so as to carry out depth-fixed sampling in a drill hole, but when the depth of the drill hole exceeds 100 meters, the human hearing is difficult to distinguish due to small sound, so that the reliability of the depth-fixed sampling is poor.

Disclosure of Invention

The invention provides a fixed-depth water sample collecting device and a method thereof, which are used for solving the problem of poor reliability of fixed-depth sampling when the drilling depth exceeds 100 meters in the prior art.

In a first aspect, an embodiment of the present invention provides a depth-fixed water sample collecting device, including: the device comprises a lifting assembly and a fixed-depth sampling assembly, wherein one end of the lifting assembly is connected with the fixed-depth sampling assembly;

the depthkeeping sample subassembly includes: the sampler with establish depthkeeping seal subassembly on the sampler sample connection, depthkeeping seal subassembly is used for control the sampler sample connection is opening and is closing at the predetermined degree of depth.

As above depthkeeping water sample collection system, it is optional, the depthkeeping seal subassembly includes appearance end and appearance end, wherein, the appearance end is equipped with the first sealing that can take place elastic deformation, the appearance end is equipped with the second sealing, first sealing is used for taking place deformation under preset pressure, so that the appearance end opening is opened, the second sealing is used for control appearance end open-ended closure.

According to the depth-setting water sample collecting device, optionally, the first sealing member is an elastic member, and the second sealing member is a magnetic member.

As above depth-fixing water sample collection system, optional, the depth-fixing seal subassembly includes that each other overlap and establish and inside communicating sample inlet and can take place elastic deformation's a sample outlet, wherein, a sample outlet with the sampler links to each other, just first seal is established sample inlet on the inside opening of introduction end, the second seal is established sample outlet go out on the appearance end.

The fixed-depth water sample collecting device is optional, the sample inlet end of the sample inlet part is of a round-mouth structure, and the sample outlet end of the sample outlet part is of a flat-mouth structure.

According to the depth-fixed water sample collecting device, optionally, the outer surface of the sample outlet piece is tightly attached to the inner wall of the sampler, a first flanging is arranged at one end, close to the sample inlet piece, of the sample outlet piece, and the first flanging abuts against the inner wall or the outer edge of the sampler;

the sample injection part is close to be equipped with on the surface of introduction end and be used for right the spacing second turn-ups of sample injection part.

As above depth water sampling device, optionally, the lifting unit includes: rope, transmission group, handle and fixed bolster with scale, wherein, the transmission group is established on the fixed bolster, the one end of rope with the transmission group links to each other, the other end of rope with depthkeeping sample subassembly links to each other, the handle with the transmission group links to each other.

As above depth water sample collection system, optional, still include: the guide assembly is arranged at the top end of the drilling sleeve and used for guiding the rope;

further comprising: a tension measuring member for measuring tension on the rope during acquisition.

According to the depth-fixed water sample collecting device, optionally, the guide assembly comprises a pulley and a fixing piece, the fixing piece is used for fixing the pulley at the top end of the drilling sleeve, and the pulley is located right above the cable preformed hole;

the fixing member includes: dead lever, drive division, fixed part and removal portion, wherein the pulley with the fixed part is established on the dead lever, the removal portion is in under the drive of drive division slide the setting on the dead lever, so that the dead lever passes through the removal portion with the fixed part is fixed on the drilling sleeve.

In a second aspect, an embodiment of the present invention provides a method for collecting a fixed-depth water sample, where the method for collecting a fixed-depth water sample is performed by using the fixed-depth water sample collecting device described above, and the method includes:

putting the depth-fixing sampling assembly in the depth-fixing water sample acquisition device into the drilling sleeve through the lifting assembly in the depth-fixing water sample acquisition device;

when the fixed-depth sampling assembly reaches a preset distance from the water surface, reducing the descending speed of the fixed-depth sampling assembly, and detecting the tension on the lifting assembly in a preset period;

marking the rope scale in the lifting assembly as L1 when the tension is reduced, and continuing to lower the depth-setting sampling assembly;

when the tension is increased, the rope scale in the lifting assembly is marked as L2, and the depthkeeping sampling assembly is lifted out of the borehole sleeve, and the sampling depth is obtained according to the difference between the L1 and the L2.

According to the depth-fixed water sample collecting device and the method thereof, one end of a lifting assembly is connected with a depth-fixed sampling assembly, a depth-fixed sealing assembly is arranged on a sampling port of a sampler of the depth-fixed sampling assembly, and when the sampler reaches a preset depth in a drill hole, the depth-fixed sealing assembly is used for controlling the opening of the sampling port of the sampler in the sampler under the action of the thrust of water with the preset depth; after sampling, the depth-fixed sealing assembly is used for controlling the closing of a sampling port of the sampler; therefore, the purpose of depthkeeping sample has been realized to the depthkeeping water sample collection system that this embodiment provided, has solved the problem that the reliability is relatively poor when the drilling depth of mentioning exceeds 100 meters and carries out depthkeeping sample among the prior art.

Drawings

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

Fig. 1 is a schematic structural diagram of a depth-fixed water sample collecting device according to a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a depth-fixed sampling assembly according to an embodiment of the present invention

FIG. 3 is a schematic view of a connection between a lifting assembly and a fixing bracket according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a guide assembly according to a second embodiment of the present invention;

fig. 5 is a schematic flow chart of a collecting method of the depth-fixed water sample collecting device provided by the third embodiment of the present invention.

Description of reference numerals:

1: a handle;

2: a transmission set;

3: a fixed frame;

4: a rope;

5: a fixing member;

6: drilling a sleeve;

7: a support frame;

8: a sampler;

9: a depth setting sealing component;

10: a fixing plate;

11: a cable preformed hole;

12: a sample outlet part;

13: a sample inlet piece;

14: a first closure member;

15: a second closure member;

16: a first flanging;

17: second flanging;

18: a driving gear;

19: a driven gear;

20: a winding shaft;

21: hooping;

22: a tension member;

23: a pulley;

24: fixing the rod;

25: a fixed part;

26: a moving part;

27: a connecting portion;

28: a drive section.

Detailed Description

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

The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this invention and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In order to research and analyze the water quality change rule of each aquifer in the stratum, the ground hydrological observation hole needs to be subjected to depth-fixed sampling. At present, water level on-line monitoring equipment is all installed to huai nan mining area ground hydrology observation hole, and drilling depth is in several hundred meters deeply, along with drilling depth's change, and the water quality also will take place very big change in the drilling, consequently, for the water quality change law of each aquifer in the research and analysis stratum, need carry out the quality of water of the different degree of depth of depthkeeping sample analysis degree of depth. However, in the prior art, the depth of water is often judged by depending on human hearing so as to perform depth-fixed sampling in the borehole, but when the depth of the borehole exceeds 100 meters, the human hearing is difficult to distinguish due to small sound, and the reliability of the depth-fixed sampling is often poor. In order to realize depth-setting sampling in a drill hole, the embodiment of the invention provides a depth-setting water sample collecting device.

Example one

Fig. 1 is a schematic structural diagram of a depth-setting water sample collection device according to an embodiment of the present invention.

The depthkeeping water sample collection system that this embodiment provided can be used for the collection of stratum water sample, is particularly useful for the collection of the depthkeeping water sample in the drilling, and the purpose of depthkeeping sample has been realized when drilling depth surpasses the distinguishable degree of depth of human ear to the depthkeeping water sample collection system that this embodiment provided, has solved among the prior art when drilling depth surpass 100 meters carry out the relatively poor problem of depthkeeping sample reliability through human ear.

In a first aspect, as shown in fig. 1, a depth-setting water sample collecting device includes: the device comprises a lifting assembly and a fixed-depth sampling assembly, wherein one end of the lifting assembly is connected with the fixed-depth sampling assembly and is used for descending the fixed-depth sampling assembly to a preset depth through the lifting assembly to collect a water sample;

the depthkeeping sample subassembly includes: sampler 8 and establish depthkeeping seal assembly 9 on sampler 8 sample connection, depthkeeping seal assembly 9 is used for controlling 8 sample connections of sampler and opens and close at the preset degree of depth, and when avoiding the depthkeeping sample, the water sample of other depths is to the pollution of the sample that the preset degree of depth was gathered, ensures the purity of the water sample that the preset degree of depth was gathered, has improved the accuracy and the reliability of the sample of gathering.

Specifically, when the fixed-depth sampling assembly descends to the front of the preset depth through the lifting assembly, the fixed-depth sealing assembly 9 closes the sampling port of the sampler 8, so that water samples with other depths are prevented from entering the sampler 8 and polluting the sampled sample; when depthkeeping sampling component descends to preset the degree of depth through lifting means, depthkeeping seal assembly 9 opens 8 thief hatches of sampler, and the groundwater of presetting the degree of depth enters into sampler 8 through depthkeeping seal assembly 9 and carries out the collection of the water sample of presetting the degree of depth to after the sample, depthkeeping seal assembly 9 is used for controlling closing of 8 thief hatches of sampler, thereby improves the accuracy and the reliability of the sample.

In this embodiment, the sampler 8 includes any structural container with a holding cavity inside, including but not limited to a sampling cylinder.

In this embodiment, the depth-fixed sealing assembly 9 may include a valve body capable of controlling the opening and closing of the sampling port of the sampler 8 at a predetermined depth or a structural member capable of implementing the above function, and the valve body includes but is not limited to an electromagnetic valve.

Therefore, the depth-fixed water sample collecting device provided by the embodiment is connected with the depth-fixed sampling assembly through one end of the lifting assembly, and the depth-fixed sealing assembly is arranged on the sampling port of the sampler of the depth-fixed sampling assembly, so that when the sampler reaches the preset depth in the drill hole, the depth-fixed sealing assembly controls the opening of the sampling port of the sampler in the sampler under the action of the thrust of the water with the preset depth; after sampling, the depth-fixed sealing assembly is used for controlling the closing of a sampling port of the sampler; therefore, the purpose of depthkeeping sample has been realized to the depthkeeping water sample collection system that this embodiment provided, has solved the problem that the reliability is relatively poor when the drilling depth of mentioning exceeds 100 meters and carries out depthkeeping sample among the prior art.

Fig. 2 is a schematic structural diagram of a depth-fixing sampling assembly according to an embodiment of the present invention.

Further, on the basis of the above embodiment, in this embodiment, as shown in fig. 2, the depth-fixed sealing assembly 9 includes a sample inlet end and a sample outlet end, wherein the sample inlet end is provided with a first sealing member 14 capable of generating elastic deformation, the sample outlet end is provided with a second sealing member 15, the first sealing member 14 is configured to deform under a preset pressure so as to open an opening of the sample inlet end for collecting an underground water sample under the preset pressure or the preset depth, and the second sealing member 15 is configured to control a closing of the opening of the sample outlet end for closing the sample outlet end after the preset pressure and the sampling are reached, so that a purity of the collected sample with the preset depth can be ensured, and thus accuracy and reliability of the sampled sample can be improved.

Specifically, when the depth-fixed sampling assembly is close to the preset depth underwater, the depth-fixed sampling assembly continues to descend under the action of the lifting assembly, and due to the action of water pressure, the first sealing member 14 can be subjected to certain pressure or thrust, and when the pressure or the thrust reaches the preset pressure, the first sealing member 14 can deform under the action of the water pressure, so that the opening of the sampling end is opened, and then the second sealing member 15 can control the opening of the sampling end to be opened under the action of the water pressure for collecting a water sample under the preset pressure; along with the water sample gets into sampler 8, the air in sampler 8 is discharged gradually, and the buoyancy that sampler 8 received disappears, and the interior outer differential pressure of sampler 8 equals after the sample, and second sealing 15 controls the opening of appearance end and closes to improve the accuracy and the reliability of the sample.

The water level depth in the well drilling is monitored on line by water level on-line monitoring equipment, 1 kilogram of thrust required by the preset depth is calculated according to the pressure of every 9.8 meters in pure water, the thrust pushed away by the first sealing piece 14 is tested by a thrust meter, the thrust numerical value required by the error is recorded in 0.1 kilogram of the thrust numerical value, and therefore the size and the thickness of the first sealing piece 14 are changed according to the thrust required by the preset depth.

Wherein, in this embodiment, the first sealing member 14 can be an elastic member, the second sealing member 15 can be a magnetic member, such that when the sampler 8 reaches a predetermined depth, the water pressure in the drilling sleeve elastically deforms the first sealing member 14, such that the opening of the sampling end of the depth-setting sealing assembly 9 is opened, such that the sample to be tested enters from the sampling end, and under the action of the sample to be tested, the second sealing member 15 is opened, such that the opening of the sampling end is also opened, such that the sample to be tested enters the sampler 8 from the depth-setting sealing assembly 9, when the sampler 8 is filled with the sample to be tested, the internal and external pressures of the sampler 8 are consistent, such that the opening of the sampling end of the depth-setting sealing assembly 9 is closed, the opening of the sampling end is still in an open state due to the deformation of the elastic member, and since the opening of the sampling end of the depth-setting sealing assembly 9 is in a closed state under the attraction effect of the magnetic member, like this during sampler 8 rises the water sample of all the other water depths of in-process and can't enter into sampler 8 to realized taking a sample to the accuracy of depthkeeping water sample, wherein, in this embodiment, as second sealing 15 is the magnetic part, this moment, the magnetic part can be established on appearance end open-ended outer wall, perhaps can establish on appearance end open-ended inner wall, the quantity that the magnetic part set up as long as can guarantee that the magnetic part attracts mutually makes depthkeeping seal assembly 9's appearance end opening closed can.

Further, in this embodiment, the first sealing member 14 may be a silicon sheet or another device capable of generating elastic change, wherein in this embodiment, as shown in fig. 2, the first sealing member 14 is specifically a circular silicon sheet, it should be noted that the first sealing member 14 may also be in other shapes, that is, in this embodiment, the shape of the second sealing member 14 includes but is not limited to a circle, wherein in this embodiment, the structure of the second sealing member 15 may be a strip-shaped magnetic member, such as a strip-shaped magnet, or in this embodiment, the second sealing member 15 may be a sheet-shaped magnetic sheet, in this embodiment, when the second sealing member 15 is a magnetic member, the magnetic member includes but is not limited to a magnet or a magnetic sheet, and in this embodiment, as long as it is ensured that the opening of the sampling end of the depth-fixing sealing assembly 9 is closed when the magnetic members attract each other.

Further, on the basis of the above embodiment, in this embodiment, the depth-setting sealing assembly 9 includes a sample inlet 13 and a sample outlet 12 that are sleeved and communicated with each other and can elastically deform, wherein, the sample outlet 12 is connected with the sampler 8, and the first sealing member 14 is arranged on the inner opening of the sample inlet end of the sample inlet 13 for controlling the opening or closing of the inner opening of the sample inlet end of the sample inlet 13, thereby controlling the opening and closing of the sampling port of the sampler 8, the second sealing member 15 is arranged on the sampling end of the sampling member 12, the second sealing member 15 is arranged on two sides of the sampling end in the embodiment and has smaller magnetism, when the first sealing member 14 is elastically deformed under a predetermined pressure or thrust force so that the sample introduction end of the sample introduction member 13 is opened, under the action of water pressure, the second sealing member 15 is opened, and when the pressure disappears, the second sealing members 15 on the two sides close the sample outlet end of the sample outlet member 12.

In this embodiment, in order to facilitate the first sealing member 14 to be disposed at the inner opening of the sample inlet end of the sample inlet member 13, and to be stressed uniformly under a preset pressure, the inner opening of the sample inlet end of the sample inlet member 13 is an annular opening, the bottom of the first sealing member 14 is exposed at the sample inlet end of the sample inlet member 13, and the periphery of the first sealing member is clamped on the sample inlet end of the sample inlet member 13 through the annular opening, the width of the sample inlet end affects the diameters and the sizes of the first sealing member 14 under different thrusts, in this embodiment, when the width of one side of the sample inlet end is 1mm, the sizes and the thicknesses of the first sealing member 14 under different thrusts are explained. Specifically, after multiple measurements, when the required thrust is 2 kg, the diameter of the first sealing member 14 is 35mm, and the thickness is 2 mm; when the required thrust is 3 kilograms, the diameter of the first sealing member 14 is 36mm, and the thickness is 2 mm; when the required pushing force is 3.5 kilograms, the diameter of the first sealing part 14 is 37mm, and the thickness is 2 mm; when the required pushing force is 4 kg, the first sealing member 14 has a diameter of 38mm and a thickness of 2 mm.

Wherein, in this embodiment, the appearance end that advances of appearance piece 13 is round mouth structure, the appearance end that goes out of appearance piece 12 is flat mouthful of structure for when second sealing 15 is the magnetic part, the magnetic part is changeed automatic actuation and is closed with the appearance end that goes out of appearance piece 12, second sealing 15 is located the both sides of the appearance end that goes out of appearance piece 12, in order to prevent the gliding of sealing, second sealing 15 can fix the both sides at the appearance end that goes out of appearance piece 12, fixed mode includes but not only is limited to the bonding.

In the embodiment, in order to prevent water from entering the sampler 8 from the connecting gap between the sample outlet member 12 and the sampler 8, the outer surface of the sample outlet member 12 is closely attached to the inner wall of the sampler 8, and a first flange 16 is arranged at one end of the sample outlet member 12 close to the sample inlet member 13, and the first flange 16 abuts against the inner wall or the outer edge of the sampler 8;

in order to avoid the up-and-down displacement of the sample inlet piece 13 in the sample outlet piece 12, a second flanging 17 for limiting the sample inlet piece 13 is arranged on the outer surface of the sample inlet piece 13 close to the sample inlet end, and the sample inlet piece 13 is relatively fixed in the sample outlet piece 12 up and down through the second flanging 17.

In this embodiment, the sample outlet member 12 is made of an elastic material, which includes but is not limited to silica gel, specifically, the sample outlet member may be a silica gel barrel, or in this embodiment, the sample outlet member may also be an elastic barrel or an elastic tubular structure that can deform when the magnetic members attract each other.

In this embodiment, the first flange 16 includes a flange structure adapted to the structure of the sampling opening of the sampler 8, and the sample outlet 12 is closely attached to the inner wall or the outer edge of the sampler 8 through the first flange 16.

In this embodiment, when the sample piece 13 is assembled in the sample outlet 12, the sample piece 13 is embedded in the sample outlet 12 through the body of the sample piece 13 or the second flange 17, and the second flange 17 is located at the top of the first flange 16.

In this embodiment, the sample injection member 13 includes a barrel-shaped structure made of a metal material, the metal material includes but is not limited to iron, in this embodiment, the sample injection member may specifically be an iron barrel,

fig. 3 is a schematic view illustrating a connection between a lifting assembly and a fixing bracket according to an embodiment of the present invention.

Further, on the basis of the above embodiment, in this embodiment, as shown in fig. 3, the lifting assembly includes: rope 4, transmission group 2, handle 1 and fixed bolster with scale, wherein, transmission group 2 establishes on the fixed bolster, and the one end of rope 4 links to each other with transmission group 2, and the other end of rope 4 links to each other with depthkeeping sample subassembly, and handle 1 links to each other with transmission group 2, and during the use, rotation handle 1 passes through transmission group 2 and rope 4 and descends the predetermined depth in the drilling or upwards promotes depthkeeping sample subassembly from the predetermined depth with depthkeeping sample subassembly.

Wherein, in this embodiment, transmission group 2, rope 4, handle 1 and fixed bolster have constituted the hand capstan winch structure of auto-lock, in order to improve sampling speed, transmission group 2 includes driving gear 18, driven gear 19 and kinking axle 20, driven gear 19 and the meshing of driving gear 18, driven gear 19 and 20 synchronous motion of kinking axle, rope 4 twines on the winding axle of the hand capstan winch structure of auto-lock, when turning handle 1, under the drive of transmission group 2, drive the decline or the rising of depthkeeping sampling subassembly in the drilling through rope 4.

In this embodiment, the fixing bracket includes a fixing frame 3, a supporting frame 7 and a fixing member 5, the transmission set 2 is fixed in the fixing frame 3, the fixing frame 3 is fixed on the ground through the supporting frame 7, and plays a supporting role for the fixing frame 3, and the fixing frame 3 is also detachably connected with a drilling sleeve 6 located in a drilling hole through the fixing member 5.

In the present embodiment, the supporting frame 7 includes, but is not limited to, a triangular supporting frame 7. The one end and the fixed frame 3 of mounting 5 are fixed or can be dismantled and be connected, the other end passes through staple bolt 21 and wears to locate the taut 22 at staple bolt 21 both ends and can dismantle with drilling sleeve 6 and be connected, the transportation of the collection system of being convenient for ensures the stability of lifting means, staple bolt 21 encircles on drilling sleeve 6 outer wall, when needs are dismantled mounting 5 or are taken off drilling sleeve 6, with taut 22 from the both ends back-out of staple bolt 21, taut 22 assembly at the both ends of staple bolt 21 and with staple bolt 21 threaded connection. In this embodiment, the hoop 21 preferably includes two semicircular steel rings, and the tightening member 22 may be any one of a screw and a bolt.

Wherein, in this embodiment, in order to measure the pulling force on the lifting unit, still include: the tension measuring piece is used for measuring tension on the rope 4 in the collecting process, the change of the position of the sampler 8 in the drilling sleeve can be accurately obtained through the tension change measured by the tension measuring piece, the scale on the rope 4 is marked according to the tension change, and finally the actual depth of the sample in the sampler 8 is obtained according to the scale mark on the rope 4, so that the purpose of accurately measuring the actual depth of the obtained sample is realized.

In this embodiment, the tension measuring device is preferably a tension meter.

It should be noted that the lifting assembly in this embodiment is a very mature assembly in the prior art, and specific positions and connection relationships thereof are not further described in this embodiment.

Therefore, according to the depth-fixed water sample collecting device provided by the embodiment, one end of the lifting assembly is connected with the depth-fixed sampling assembly, and the depth-fixed sealing assembly 9 is arranged on the sampling port of the sampler 8 of the depth-fixed sampling assembly, so that when the sampler 8 reaches the preset depth in the drill hole, the depth-fixed sealing assembly 9 is used for controlling the opening of the sampling port of the sampler 8 in the sampler 8 under the action of the thrust of the water with the preset depth; after sampling is finished, the depth-fixed sealing assembly 9 is used for controlling the closing of a sampling port of the sampler 8; therefore, the purpose of depthkeeping sample has been realized to the depthkeeping water sample collection system that this embodiment provided, has solved the problem that the reliability is relatively poor when the drilling depth of mentioning exceeds 100 meters and carries out depthkeeping sample among the prior art.

Example two

Fig. 4 is a schematic structural diagram of a guide assembly according to a second embodiment of the present invention.

Further, on the basis of the above embodiment, in this embodiment, as shown in fig. 4, in order to avoid the rope 4 from being entangled with other cables in the cable preformed hole 11 during the lifting process, the rope 4 needs to be put into a drill hole from the center of the cable preformed hole 11, a fixing plate 10 is disposed at the top end of the drill sleeve 6, the cable preformed hole 11 is disposed on the fixing plate 10, and in order to ensure that the depth-fixing sampling assembly can be put into the drill hole from the center of the cable preformed hole 11, in this embodiment, the method further includes: a guide assembly provided at the top end of the drill sleeve 6 for guiding the rope 4.

In the embodiment, the guiding assembly comprises a pulley 23 and a fixing member 5, the fixing member 5 is used for fixing the pulley 23 at the top end of the drilling sleeve 6, and the pulley 23 is located right above the cable preformed hole 11, so that a certain guiding effect on the rope 4 is facilitated; wherein, the fixing member 5 includes: the fixing rod 24, the driving part 28, the fixing part 25 and the moving part 26, wherein the pulley 23 and the fixing part 25 are arranged on the fixing rod 24, the moving part 26 is arranged on the fixing rod 24 in a sliding manner under the driving of the driving part 28, so that the fixing rod 24 fixes the pulley on the drilling sleeve 6 through the moving part 26 and the fixing part 25, and the pulley is located at the center position of the cable preformed hole 11.

In the embodiment, the fixing portion 25 and the pulley are sleeved on the fixing rod 24 and detachably connected with the fixing rod 24, the driving portion 28 is assembled at the end of the fixing rod 24 through the connecting portion 27, and the driving portion 28 is in threaded connection with the connecting portion 27; one side wall of the drilling sleeve 6 is positioned between the fixed part 25 and the movable part 26, and the movable part 26 is pushed to move towards the fixed part 25 by rotating the driving part 28 so as to clamp the drilling sleeve 6; conversely, when it is desired to remove the guide assembly from the drill sleeve 6, the guide assembly can be easily installed and removed from the drill sleeve 6 by rotating the drive portion 28 in the opposite direction.

In the present embodiment, the driving portion 28 is preferably a rocking handle, the connecting portion 27 and the fixing rod 24 may be of a separate structure or an integrated structure, and when the connecting portion 27 and the fixing rod 24 are of an integrated structure, the connecting portion 27 and the fixing rod 24 are of an integrated structure.

EXAMPLE III

Fig. 5 is a schematic flow chart of a collecting method of the depth-fixed water sample collecting device provided by the third embodiment of the present invention.

The present embodiment provides a method for collecting a fixed depth water sample, which uses the device for collecting a fixed depth water sample described in any one of the above embodiments to collect, as shown in fig. 5, the method includes:

step 101: the depth-fixed sampling assembly in the depth-fixed water sample acquisition device is placed into the drilling sleeve 6 through the lifting assembly in the depth-fixed water sample acquisition device, so that samples of groundwater in a drilled hole can be conveniently acquired;

step 102: when the depth-setting sampling assembly reaches a preset distance from the water surface, the descending speed of the depth-setting sampling assembly is reduced, and the tension on the lifting assembly is detected in a preset period, wherein the tension is the total weight of the rope 4 and the depth-setting sampling assembly;

step 103: when the tension is reduced, marking the scale L1 of the rope 4 in the lifting assembly, and continuing to lower the depth-setting sampling assembly;

step 104: when the tension increases, the rope 4 in the marking hoist assembly is marked as L2 and the depthkeeping sampling assembly is lifted out of the borehole casing 6, and the sampling depth is obtained from the difference between L1 and L2.

In this embodiment, the preset distance is preferably 10 meters, when the depth-fixing sampling assembly descends to the preset distance from the water surface, the descending speed of the depth-fixing sampling assembly is reduced, the total weight of the rope 4 and the depth-fixing sampling assembly is measured by the tension measuring part every several meters, after the depth-fixing sampling assembly enters the water, the detected tension is reduced due to the buoyancy effect of the water, at this time, the scale of the rope 4 in the lifting assembly is marked and recorded as L1, and the detection is stopped (namely, a preset period). Then, the depth-setting sampling assembly is further lowered to a preset distance (ten meters before the expected depth), and the total weight of the rope 4 and the depth-setting sampling assembly is measured by the tension measuring member again at intervals of several meters. When the first closure member 14 is pressed open by the pressure of the water, the water simultaneously presses open the second closure member 15 into the sampler 8, and the pressure in the sampler 8 rises, at which time the air in the sampler 8 will exit the sampler 8 through the gap between the sampler 8 and the outlet member 12. When the air in the sampler 8 is exhausted and the buoyancy disappears, the tension detected by the tension measuring piece will increase, at this moment the rope 4 in the marking lifting assembly is marked with L2, and the depth-fixing sampling assembly is lifted out of the drilling sleeve 6 by the lifting assembly, and the sampling depth is obtained according to the difference between L1 and L2. Wherein, 8 internal and external pressure differentials of sampler after the sample are equal, go out two second sealing 15 of the appearance end of appearance 12 and seal the appearance end of appearance 12 by magnetic force, avoid the in-process that depthkeeping sampling subassembly is ascending, other degree of depth water samples get into sampler 8, cause the pollution to the sample of predetermineeing the degree of depth, improved the accuracy and the reliability of the sample of.

The method for collecting the fixed-depth water sample provided by the embodiment of the invention realizes the purpose of fixed-depth sampling. The method can be used for sampling at a fixed depth when the drilling depth exceeds 100 meters, and has higher reliability.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral to one another; either directly or indirectly through intervening media, such as through internal communication or through an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a depthkeeping water sample collection system which characterized in that: the device comprises a lifting assembly and a fixed-depth sampling assembly, wherein one end of the lifting assembly is connected with the fixed-depth sampling assembly;

the depthkeeping sample subassembly includes: the sampler with establish depthkeeping seal subassembly on the sampler sample connection, depthkeeping seal subassembly is used for control the sampler sample connection is opening and is closing at the predetermined degree of depth.

2. The depthkeeping water sample collecting device of claim 1, characterized in that: the depthkeeping seal subassembly includes appearance end and appearance end, wherein, the appearance end is equipped with the first sealing that can take place elastic deformation, the appearance end is equipped with the second sealing, first sealing is used for taking place deformation under the pressure of predetermineeing, so that the appearance end opening is opened, the second sealing is used for control appearance end open-ended closure.

3. The depthkeeping water sample collecting device of claim 2, characterized in that: the first sealing piece is an elastic piece, and the second sealing piece is a magnetic piece.

4. The depthkeeping water sample collecting device of claim 3, characterized in that: the depthkeeping seal subassembly establishes and inside communicating appearance piece of advancing and the appearance piece of play that can take place elastic deformation including overlapping each other, wherein, go out the appearance piece with the sampler links to each other, just first seal is established advance the appearance piece on the internal opening of introduction end, the second seal is established go out the appearance piece go out on the appearance end.

5. The depthkeeping water sample collecting device of claim 4, characterized in that: the sample inlet end of the sample inlet part is of a round-mouth structure, and the sample outlet end of the sample outlet part is of a flat-mouth structure.

6. The depthkeeping water sample collecting device of claim 5, characterized in that: the outer surface of the sample outlet piece is tightly attached to the inner wall of the sampler, a first flanging is arranged at one end, close to the sample inlet piece, of the sample outlet piece, and the first flanging abuts against the inner wall or the outer edge of the sampler;

the sample injection part is close to be equipped with on the surface of introduction end and be used for right the spacing second turn-ups of sample injection part.

7. A depthkeeping water sample collection device according to any one of claims 1-6, characterized in that: the lifting assembly comprises: rope, transmission group, handle and fixed bolster with scale, wherein, the transmission group is established on the fixed bolster, the one end of rope with the transmission group links to each other, the other end of rope with depthkeeping sample subassembly links to each other, the handle with the transmission group links to each other.

8. The depthkeeping water sample collecting device of claim 7, characterized in that: further comprising: the guide assembly is arranged at the top end of the drilling sleeve and used for guiding the rope;

further comprising: a tension measuring member for measuring tension on the rope during acquisition.

9. The depthkeeping water sample collecting device according to claim 8, characterized in that: the guide assembly comprises a pulley and a fixing piece, the fixing piece is used for fixing the pulley at the top end of the drilling sleeve, and the pulley is positioned right above the cable preformed hole;

the fixing member includes: dead lever, drive division, fixed part and removal portion, wherein the pulley with the fixed part is established on the dead lever, the removal portion is in under the drive of drive division slide the setting on the dead lever, so that the dead lever passes through the removal portion with the fixed part is fixed on the drilling sleeve.

10. A method for collecting a fixed depth water sample by using the fixed depth water sample collecting device according to any one of claims 1 to 9, comprising the steps of: the method comprises the following steps:

putting the depth-fixing sampling assembly in the depth-fixing water sample acquisition device into the drilling sleeve through the lifting assembly in the depth-fixing water sample acquisition device;

when the fixed-depth sampling assembly reaches a preset distance from the water surface, reducing the descending speed of the fixed-depth sampling assembly, and detecting the tension on the lifting assembly in a preset period;

marking the rope scale in the lifting assembly as L1 when the tension is reduced, and continuing to lower the depth-setting sampling assembly;

when the tension is increased, the rope scale in the lifting assembly is marked as L2, and the depthkeeping sampling assembly is lifted out of the borehole sleeve, and the sampling depth is obtained according to the difference between the L1 and the L2.

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