JP2002161693A - Water sampler and water sampling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water sampler capable of economically using the existing wire line sampling system in a state to remain unchanged at a working site, surely sampling water at a scheduled position and submitting for an examination of water by completely keeping the water in an original state of sampling. SOLUTION: The water sampler includes a top plug for storing the sampler equipped with a channel connecting to the inside and outside thereof, a valve, a check valve to an opening section, a pipe engaging the top plug with the front end section in a detachable manner and engaging a hanger body with the rear end section, the front end section is connected to the top plug by passing through the inside of the pipe and the hanger body and, at the same time, a spear shaft having the hanger body and a slidable stepped fitting section with a different diameter in a backward section, the pipe is set to the inside of the front end of an outer tube for the geological sampling wire line sampling system, at the same time, the rear end section of the spear shaft is held by an overshot of the wire line sampling system to hang down from the ground and wind up, and accordingly the top plug is opened and tightly closed from the front end of the pipe to enable ground water to take as sample into the pipe to seal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water sampling device and a water sampling method for sampling groundwater, such as a percussion wire line sampling method.

[0002]

2. Description of the Related Art In the percussion wire line sampling method, a system for collecting groundwater has not been developed so far. On the other hand, there has been a method in which a crane (baler) is suspended from a ground or the like with a rope or the like in an excavation hole or a rod to collect water.

[0003] Such a conventional technique has the following disadvantages. (1) When collecting water while continuing excavation work, separate wire hoisting cannot be used for elevating the vine, because a wire sampling system for sampling geological samples cannot be used or a water sampling device is not directly connected to the overshot. Either installation of a device or connection of a water sampling device requires complicated work. For this reason, the work efficiency was poor and uneconomical.

(2) In the method of sampling water at Turbe, the sample cannot be sealed at the sampling position, so that groundwater or drilling water during the ascent and descent of Turbe may be mixed and volatile substances contained in the groundwater may be removed. The problem of contact with the atmosphere occurs. This is a fatal disadvantage for water quality testing of groundwater contamination.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems by providing an economical wire line sampling system existing at a work site as it is, and at a predetermined position. An object of the present invention is to provide a water sampling device that can surely collect water, completely save a state at the time of water sampling, and use it for a water quality test.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a wire sampling system which is one type of a geological survey system, and has a pipe shape gripped by an overshot connected to a wire line and a hoist. Is mounted inside the distal end of the outer tube assembly of the wireline sampling system,
A top plug is provided movably on a pipe, which is a main component of the water sampler, and the top plug opens the opening of the pipe by suspending the overshot, and winds the pipe by winding the overshot. It is characterized by moving so as to be sealed.

The pipe engages the top plug at a tip end thereof, and a hanger body for sealing at a rear end portion, penetrates through the inside of the pipe and the hanger body, and attaches the tip end to the pipe. A spear shaft connected to a top plug, wherein the pipe is set inside a distal end of an outer tube assembly of the wire sampling system for geological sampling, and a rear end of the spear shaft is an overshot of the wire sampling system. And suspended from the ground and wound up.

The spear shaft has a stepped fitting portion of a different diameter slidable with the hanger body at a rear portion,
When the water dispenser is suspended and reaches a set position of the outer tube assembly at a depth to be dispensed, the top plug, a spear shaft and an overshot or the like are axially loaded to load the pipe by weight. And at the same time, the seal with the hanger body is opened by the small diameter portion of the stepped fitting portion of the different diameter of the spear shaft, and the air in the pipe is released and the front portion of the outer tube assembly is released. By collecting groundwater and then winding the water sampler, the pipe and the top plug are brought into close contact with each other, and the large-diameter portion of the stepped fitting portion of the spear shaft with a different diameter is brought into close contact with the hanger body, thereby obtaining a sample. Is collected from the water sampling position on the ground while being sealed in the pipe and the top plug.

The top plug contains a sample container having a check valve in an opening therein, and has a flow path and a valve communicating with the inside and the outside. When the sample container is attached to the sample container, the inside of the sample container communicates with the inside of the pipe, and when the sample container is taken out from the top plug, the check valve seals the inside of the sample container.

[0010] Further, the sample sealed in the water sampler using the water sampler is inserted into a valve of the top plug, and a required amount of the sample is separated into a separate container while maintaining the sealed state. The water sampling method is characterized in that the water can be transferred to the water sampling method.

[0011]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In sampling of groundwater such as a percussion wire line sampling method, the water sampler 10 according to one embodiment of the present invention includes:
As shown in FIG. 1, the top plug 1 is mainly set inside a distal end of an outer tube assembly 22 of a wire sampling system (percussion wire line sampler) 20 for sampling a geological sample existing at a work site.
1, a spear shaft 12, a pipe 13, and a hanger body 14.

The rear end of the spear shaft 12 is gripped by the overshot 21 of the wire line sampling system 20, and the wire line sampling system 2
0 allows the water sampler 10 to be suspended from the ground and wound up via the wire 30.

As shown in FIGS. 1 to 3, a sample container such as a test tube having a check valve 17 in an opening is provided in a storage chamber 11a formed in the pivot of the top plug 11. Fifteen
And cushion rubber 1 for protecting sample container 15
6 and a flow path 11b and a valve 18 communicating with the inside and the outside. The check valve 17 is
The plug 17a is composed of a plug 17a, a valve element 17b, a retainer 17c, and a spring 17d. As shown in FIG. 5, the plug 17a is normally pressed against the tip of the valve element 17b by a spring 17d and hermetically closed. The valve 18 is composed of a valve rubber 18a and a spring 18b. As shown in FIGS. 4 and 5, the valve rubber 18a is normally pressed by the spring 18b against the crimped outer opening of the flow path and hermetically closed. ing.

The tip of the pipe 13 is shown in FIGS.
As shown in FIG.
1c, and are detachably engaged with each other.
A hanger body 14 is detachably engaged with the rear end of the pipe 13 by a set screw 14a.

The spear shaft 12 is connected to the pipe 1
The rear end of the top plug 11 is detachably connected to the front end of the spear shaft 12 by a set screw 19, penetrating inside the seal 3 and the seal portion 14 b of the hanger body 14. The top plug 11 is a spear shaft 12
When connected to as shown in FIGS.
The check valve 17 of the sample container 15 is opened by the spring 17d being compressed by the tip of the spear shaft 12 via the retainer 17c and the valve element 17b being pushed forward.

Also, at the rear of the spear shaft 12,
As shown in FIGS. 1 and 2, stepped fitting portions (large-diameter portions 1) of different diameters slidable with the seal portion 14 b of the hanger body 14.
2a and a small diameter portion 12b). Large diameter part 12a
Then, as shown in FIG. 1, the seal portion 14b of the hanger body 14 is sealed via an O-ring 14c,
The inside of the pipe 13 is closed. As shown in FIG. 2, the small diameter portion 12b is not sealed with the seal portion 14b and is in an open state.

When the water sampler 10 is suspended by the wire 30 and reaches the set position of the outer tube assembly 22 at a depth at which water is to be sampled, as shown in FIG. The top plug 11 is separated from the tip of the pipe 13 by axially applying a weight such as the shaft 12 and the overshot 21. At the same time, the hanger body 14 is formed by the small diameter portion 12b of the different diameter stepped fitting portion of the spear shaft 12.
To release the air in the pipe 13 and collect groundwater in front of the core bit 23 at the distal end of the outer tube assembly 22.

Thereafter, the water sampling device 10 is wound up by the wire 30 so that the front end of the pipe 13 and the rear end of the top plug 11 are brought into close contact with each other, as shown in FIG. The large-diameter portion 12a and the seal portion 14b of the hanger body 14 are brought into close contact with each other, and the water sampling device 10 is wound up as it is, and the sample is collected from the water sampling position on the ground while being sealed in the pipe 13 and the top plug 11. .

As a first embodiment of a method for taking out a sealed sample of the water sampler 10, as shown in FIG.
The required amount of sample can be transferred to another container while the hermetic state is maintained, by inserting the tip of the removal tool 100 having a function like a syringe into the valve 18 of the top plug 11. That is, the removal tool 100 is connected to the valve 18.
The spring 18 of the valve 18 is inserted by inserting the tip of
b is compressed, the valve rubber 18a is pushed down to be in an open state, and the sample can be sucked out of the valve 18 communicating with the flow path 11b by the removal tool 100.

Next, a second embodiment of the method for removing the sample will be described. In the case where the sample in the water sampler 10 contains no volatile substance and there is no problem even if it is exposed to the air, as shown in FIG.
By pushing the top plug 11 in the distal direction through the pipe 2, the distal end of the pipe 13 and the top plug 1 are pushed out.
A sample can be collected in another container 101 from the gap 40 with the rear end of the first container.

Further, a third embodiment of the method for removing the sample will be described below. As shown in FIG. 4, the top plug 11 is separated from the spear shaft 12.
Is disassembled, the sample container 15 is taken out, and the sample can be transferred to a predetermined place while maintaining the hermetic condition.

[0022]

According to the present invention described in detail above,
The following excellent effects are provided. The water sampler 10 of the present invention is provided inside the distal end of an outer tube assembly 22 of a wire sampling system 20 for sampling geological samples already existing at a work site, and the water sampler 10 is suspended from the ground by the wire line sampling system 20. Top plug 11 at the tip of water dispenser 10 as it is lowered and wound
Are open and closed from the pipe tips with which they engage, respectively, so that groundwater is sampled and sealed in the pipes. (1) The existing wireline sampling system at the work site can be used as it is. It is economical.

(2) Water can be reliably collected at a predetermined position, and the state at the time of water collection can be completely preserved and used for a water quality test.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing a set state of a water dispenser according to one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a water sampling state of the water sampling apparatus according to one embodiment of the present invention.

FIG. 3 is a partial longitudinal sectional view showing a sample removing method according to the first embodiment using the water sampler of the present invention.

FIG. 4 is a partial longitudinal sectional view showing a sample removing method according to a second embodiment using the water sampler of the present invention.

FIG. 5 is a partial longitudinal sectional view showing a sample removing method according to a third embodiment using the water sampler of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Sampling device 11 Top plug 11a Storage chamber 11b Flow path 11c, 14c O-ring 12 Spear shaft 12a Large-diameter portion of different-diameter stepped fitting portion (of spear shaft) 12b of different-diameter stepped fitting portion (of spear shaft) Small diameter part 13 Pipe 14 Hanger body 14a, 19 Set screw 14b Seal part 14c O-ring 15 Sample container 16 Cushion rubber 17 Check valve 17a Plug 17b Valve 17c Retainer 17d, 18b Spring 18 Valve 18a Valve rubber 20 Wire line sampling system ( Percussion wire line sampler) 21 Overshot 22 Outer tube assembly 23 Core bit 30 Wire 40 Gap (between tip of pipe 13 and rear end of top plug 11) 100 Extractor 101 Container

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masayuki Ogawa 1-29-15 Chuo, Nakano-ku, Tokyo F-term (reference) 2D043 AC01 BA09 BB09

Claims (5)

[Claims] 1. A wire sampling system, which is one type of a geological survey system, wherein a pipe-shaped water sampler gripped by an overshot connected to a wire line and a hoist is a tip of an outer tube assembly of the wire line sampling system. A top plug is mounted inside and is movably attached to a pipe which is a main component of the water sampling device. The top plug opens the opening of the pipe by suspending the overshot and collects the inside of the pipe. A water dispenser characterized in that the dispenser moves so as to seal the pipe by watering and winding the overshot. 2. The pipe engages the top plug at a front end thereof and a hanger body for sealing at a rear end thereof, penetrates through the inside of the pipe and the hanger body, and connects the front end with the hanger body. A spear shaft connected to a top plug, wherein a rear end of the spear shaft is gripped by an overshot of the wireline sampling system and is suspended and hoisted from the ground. Water sampler. 3. The spear shaft has a stepped fitting portion of a different diameter slidable with the hanger body at a rear portion, wherein the outer tube is suspended at a depth at which the water sampler is hung and water is to be collected. When the set position of the assembly is reached, the top plug is separated from the pipe by axially applying a weight such as the spear shaft and the overshot, and at the same time, the spear shaft is fitted with a step of different diameter. By opening the seal with the hanger body by the small diameter part of the part, discharging the air in the pipe and collecting groundwater in front of the outer tube assembly, and then winding up the water sampling device, With the top plug and the large diameter part of the spear shaft with a different diameter stepped fitting part and the hanger body to sample water. Dispensing device according to claim 1 or claim 2 and collecting on the ground while sealed in place al the pipe and the top within the plug. 4. The top plug contains a sample container having a check valve in an opening therein, and has a flow path and a valve communicating with the inside and the outside, and the top plug is provided inside the water sampler. When attached to
The check valve according to claim 1, wherein the inside of the sample container and the pipe communicate with each other, and when the sample container is taken out from the top plug, the check valve seals the inside of the sample container. 5. The sampler described. 5. The water sampler according to any one of claims 1 to 4, wherein the sample sealed in the water sampler is inserted into a valve of the top plug, and a removal tool is inserted. A water sampling method characterized in that a required amount of a sample can be transferred to another container while maintaining hermeticity.