JPS62170834A - Collector of slime, sludge water or the like at original position - Google Patents

Abstract

PURPOSE:To collect slime, and sludge water at an original position where a sample is to be collected by executing a descent into the water by a chain, and drawing-up of a collector which has a pressure leading-in hole, and an intake hole provided with a valve for opening and closing in accordance with a variation of pressure. CONSTITUTION:A collector A and a pressure supply source D, etc. are provided on a marine vessel and a valve 20 is closed and a valve 18 is opened in a desired water area, and from a pressure supply source D, compressed air is fed into a container E through a pressure leading-in hole 7 and pressure is applied. In such a state, the vessel E is made to descend to a prescribed water depth by a chain 11, and when the pressure is reduced in this position, a ball valve 15 is opened, and a sample of sea water or sludge, etc. in the vicinity of an intake hole 13 flows in. After collecting it, the valve 15 is closed by applying the pressure into the vessel E, the collector A is drawn up, the valve 20 is opened and the valve 18 is closed on the sea or an land, and the inside of the vessel E is brought to pressure reduction, and the sample is extracted by opening the valve 15.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention collects samples of water from oceans, lakes, rivers, water tanks, etc. and sludge such as slime and sludge deposited at the bottom of these water, and collects samples of various types of water. This relates to a device for collecting slime, sludge water, etc. in situ for the purpose of measuring, analyzing, and investigating the composition.

[Conventional technology]

Conventionally, when collecting samples of seawater at a certain depth in shallow seas or sludge on the seabed to investigate water pollution, etc., a collection tool connected to a chain such as a bailer or bucket is lowered below the sea surface. After collecting samples at the specified depth, they quietly pulled up the sampling equipment. They then measured and analyzed the specific gravity, PH1 salt concentration, etc. of the collected samples.

[Problem that the invention seeks to solve]

In the conventional technology described above, even if a sample is obtained at a predetermined water depth, seawater, etc. at the halfway depth gets mixed into the sampling tool while the sampling tool is being pulled up, and the original sample collection at the original location where the sample should be taken is delayed. was not carried out. For this reason,
The measured values of measurement and analysis surveys regarding water pollution conditions, etc.
There is a problem in that accurate measurement values cannot be obtained at the original location where the sample should be taken.

[Means for solving problems]

The present invention solves the above problems and provides an in-situ sampler for collecting slime, sludge water, etc., which collects only samples at a predetermined water depth and prevents contamination with seawater, etc. at other water depths during retrieval after collection. This is what we provide. The specific means for this purpose was constructed as follows.

That is, a collector consisting of a sealed container connected to a chain to be lowered into water and pulled up from the water has a pressure introduction hole for introducing and discharging pressure from a pressure supply source, and a target slime. In-situ slime 2 sludge water characterized by forming intake holes for introducing sludge water, etc., and providing an on-off valve that opens and closes the intake holes according to pressure changes in the collector. It was used as a sampling device.

[Effect]

The in-situ slime of the present invention having the above configuration.

According to a sampler for sludge water, etc., when collecting a sample, the on-off valve is removed by applying pressure higher than the water pressure at a predetermined water depth into the container of the sampler from a pressure supply source through a pressure introduction hole. Close the entrance hole to prevent seawater, etc. from entering the container during descent. In the above state, the collector is lowered below the water surface, and at a predetermined water depth or at the bottom, the pressure inside the container is reduced through the pressure introduction hole, and the pressure is made equal to the outside water pressure.
The on-off valve opens and a sample of water, sludge, etc. flows into the container through the intake hole and the sample is collected.

After a certain period of time has elapsed in the above state, the on-off valve closes the intake hole by pressurizing the inside of the container to a level higher than the outside water pressure, thereby preventing water from other depths from entering the container during subsequent lifting of the collector. When taking out the collected sample, the pressure inside the container is reduced through the pressure introduction hole on the ship or on land.
By making the pressure equal to atmospheric pressure, the on-off valve is opened and a sample is extracted.

〔Example〕

Embodiments of the present invention will be described based on the drawings.

FIG. 1 is a vertical cross-sectional view of the slime, sludge water, etc. collector in its original position, and FIG. 2 is a perspective view thereof.

The collector A is composed of a collector body B and legs C. The collector body B has an upper plate 2 removably fixed to the upper part of a cylindrical part 1 made of a steel pipe for pressure piping, with a sealing material 3 interposed therebetween.
A bottom body 4 is fixed to the lower part. Further, a bottom plate 6 is fixed to the lower part of the bottom body 4 via a rubber packing 5.

At the center of the upper plate 2, a pressure supply source D (
A pressure introduction hole 7 is formed for introducing and discharging compressed air from (see Fig. 3), a bamboo shoot plug 8 is screwed into the pressure introduction hole 7, and a connection part 8a on one side of the plug 8 is connected to the pressure introduction hole 7. , and the pressure supply source are connected to each other by a high net hose 9. Furthermore, two hanging rings 10.10 are attached to the upper part of the upper plate 2.
A chain 11 for lowering and lifting the collector A is connected thereto.

The upper surface of the portion of the bottom body 4 that fits inside the cylindrical portion 1 is
It is hollowed out in the shape of an inverted truncated cone, with a large diameter hole 4 in the center.
It forms a. A piece 12 made of resin molded from Teflon is fitted into the hole 4a. The upper surface shape of the piece 12 is formed at the same angle as the concave shape of the bottom body 4, that is, the slope angle, and is made to be on the same plane as the concave shape of the bottom body 4 on an extension line. Furthermore, an intake hole 13 is formed in the center of the piece 12 and extends vertically and communicates with the outside of the collector body B. According to this embodiment, since the piece 12 is made of Teflon, it is possible to increase the contact surface with a ball valve 15 (described later) when pressurizing the container E, thereby improving liquid tightness.

At the bottom of the bottom body 4, a bottom plate 5, which has a portion that fits into the shape of the lower part of the piece 12, is integrally connected to the bottom body 4 by means of hexagon socket head bolts 14.

The rubber gasket 5 described above is interposed between the bottom body 4 and the bottom plate 6 to improve the liquid tightness of the collector body B.

Furthermore, a container E has a cylindrical portion 1 divided by an upper plate 2 and a bottom body 4.
Inside, a steel ball valve 15 is accommodated in a free state,
The container E is sealed. The ball valve 15 is larger in diameter than the intake hole 13 and has a size such that the upper surface of the piece 12 and the circumferential surface of the ball valve 15 can come into contact with each other. Therefore, the ball valve 15 functions as an on-off valve that opens or closes the intake hole 13 based on the pressure difference between the inside and outside of the container E.

On the other hand, the lower part of the main body B of the detector, that is, the outer peripheral surface of the bottom plate 5, constitutes the leg part C. The leg portion C is fixed to the outer peripheral surface of the bottom plate 6 by fitting the disk body 16 for stabilization and softness of the collector A onto the outer peripheral surface of the bottom plate 6. A plurality of depressions 16a are formed on the surface of the disc body 16 to reduce water resistance.

Further, legs 17 made of square pipe material are fixed to the lower surface of the disk body 16 in a radial pattern extending at right angles in all directions, with the longitudinal direction of the legs 17 being the upper and lower surfaces. Since the leg portion C has the above structure, it can be stably and softly attached even on deposits such as sludge without falling sideways.

In the collector A configured as described above, the chain 11 is attached to the hanging ring 10, 10 to an effective length, for example, 100 mm.
m minutes, and the base end side of the chain 11 is connected to a ship or a hoist. In addition, the one side connecting portion 8a of the plug 8 has a
Connect a high net hose 9 of a length that communicates with a pressure supply source such as a compressor or an oxygen cylinder.

Further, as shown in FIG. 3, on the pressure supply source side of the high net hose 9, the following pressure adjustment mechanism is provided from the pressure supply source side. That is, a magnetic 1 valve 18 that opens and closes the pipe line of the high net hose 9, a pressure gauge 19, and an 11kL2 valve 20 that connects the pipe line with the atmosphere are installed.

Next, the manner in which the sampler A is used will be explained based on FIGS. 3 to 7, taking sample collection in shallow water as an example.

Equip the vessel with extractor A and a pressure supply source, and move to the desired water area. Since the sampler A has a pressure-resistant function, it is possible to collect samples up to a depth of about 100 m.

First, at sea, close the 2nd valve 20, open the I'kl valve 18, and use the baby compressor (7kg/cJ).
Alternatively, compressed air PO is supplied from a pressure supply source such as an oxygen cylinder (10 kg/cJ) to a high net hose 9. Air is sent into the container E through the plug 8 and the pressure introduction hole 7 of the extractor A. At this time, the container E is pressurized to a level higher than the water pressure at the predetermined water depth at which the sample is to be collected. The above state is shown in FIG. As a result, the pressure inside the container E becomes higher than the atmospheric pressure P, and the ball valve 15 closes the intake hole 13.

If you lower the chain below the sea surface in the state described in 2 and mark the water depth mark on the chain 1 in advance, it will be possible to stop the descent at a predetermined water depth. As shown in FIG. 5, the ball valve 15 keeps the intake hole 13 closed because the water pressure P at a predetermined water depth for collecting the sample is applied to the container E for the sampler.

Next time you collect a sample, at the specified water depth,
The pressure inside container E is reduced. This state is shown in FIG. The second valve 20 is opened and the second valve 18 is closed for the container E which was pressurized until just before.

At this time, the pressure gauge 19 displays Okr/cJ. Due to the above condition, the water pressure P at the predetermined water depth becomes higher than the air pressure inside the container E, the ball valve 15 opens, and the sample S of seawater or sludge near the intake hole 13 flows into the container E.
Flow into the room as if inhaling, and begin collecting samples.

The waiting time for sample collection varies depending on the water depth and the diameter of the intake hole 13, but in the case of this embodiment, it is sufficient to wait for about 30 seconds.

Next, after the waiting time has elapsed, the ball valve 15 closes the intake hole 1.
Close 3. This state is shown in FIG. This has N1
12 valve 20 is closed, the 1lhl valve 18 is opened, compressed air Po is sent into the container E, and the inside of the container E is raised to a water pressure P at the water depth or higher at the predetermined position where the sample S is being collected. Apply pressure. This causes the ball valve 15 to close the intake hole 13 and interrupt sample collection.

Pull up the collector A in the above state. Even while the collector A is being pulled up, the pressure inside the container E is higher than the water pressure at the original position, so the ball valve 15 is opened and seawater that is being pulled up does not mix into the container E.

When removing the target sample S from the sampler A that was finally brought up to sea or land, use the N12 valve 20.
The ball valve 15 is opened by opening the first valve and closing the first valve 18 to reduce the pressure inside the container E and make it equal to the atmospheric pressure. The collected samples are extracted and used as samples for various measurements.

Note that cleaning the container E can be easily done by removing the top plate 2 from the cylindrical portion 1.

〔Effect of the invention〕

Since the present invention is configured as described above, it has the following effects.

1) Since a pressure higher than the water pressure at the predetermined water depth for sampling is applied from the pressure supply source to the container of the collector via the pressure introduction hole, the on-off valve tightly closes the intake hole and Since it descends to the depth of the water and there is no water intrusion into the container, it is possible to collect only the sample at the depth of the water.

2) Even after collecting the sample according to 1) above, the on-off valve tightly closes the intake hole by pressurizing the inside of the container with a pressure higher than the water pressure, so that water at other depths does not come in while the sampler is being pulled up. Samples can be collected in situ without contaminating the container.

3) According to 1) and 2) above, in-situ samples collected at a specified water depth can be collected in perfect condition in the container of the sampler, so when performing sample measurement and analysis,
Accurate in-situ measurements can be obtained.

[Brief Description of the Drawings] Figure 1 of the embodiment is a longitudinal sectional view of the collector, Figure 2 is a perspective view thereof, Figure 3 is an explanatory diagram when the collector is used, and Figures 4 to 7. FIG. 2 is an explanatory diagram showing a state in which a sample is collected. A... Sampler B... Sampler body C... Legs D... Pressure supply source E... Container

Claims (1)

[Claims] A pressure introduction hole for introducing and discharging pressure from a pressure supply source into a collector consisting of a sealed container that connects a chain and lowers into water and pulls it up from water, and slime to be targeted;
In addition to forming intake holes for introducing sludge water, etc.,
An in-situ slime, comprising an on-off valve that opens and closes the intake hole according to pressure changes within the collector;
A collector for collecting sludge water, etc.