JP3460053B2 - Underwater bubble rig - Google Patents

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] The present invention uses a pump 1 that pumps both gas and liquid (hereinafter referred to as gas-liquid) to pump gas-liquid into water, exerting an air-lifting effect, and whether it is shallow or shallow. The present invention relates to a water-bottom bubble excavator that effectively collects and lifts large-sized cobblestones, debris, and seafood in water, and aerates and cleans the bottom of the water with little water pollution.

[0002]

2. Description of the Related Art Conventionally, there has been a method of lifting by an air lift pump for excavation from deep water and lifting of resources, but since a blower and a compressor are used for air supply, the total cost for the amount of lift is However, there is another circumstance for its practical application because it has become large and its efficiency is low.

Conventionally, there have been air lift pumps,
Since a blower and a compressor are used for sending air, high-speed rotation at high pressure is required, noise and vibration are large, equipment for preventing noise and vibration is required, and there is a drawback that it is not used for general purposes.

Conventionally, there have been methods such as sand pumps for underwater excavation, dredging, and sampling. However, since turbo type pumps are often used and impellers exist as internal equipment, large gravel and cobblestones are used. It was difficult to use for mixing solids such as seafood and seafood, and was limited to mud sand. There was also a positive displacement pump, but it had screws, screws, pistons, gears, etc., so there was a drawback that it was difficult to use when large boulders of about 1/2 the diameter of the pressure-feeding pipe were mixed. there were.

Further, although there is a bucket method for underwater excavation and dredging, there is a drawback that since the bucket is put in and out of the water for each excavation, water pollution spreads to the whole and has a great influence on the environment. .

Conventionally, there have been many methods for aeration, but all of them require a high speed and high speed rotation because a blower or a compressor is used for sending water into the water like the above-mentioned excavation and dredging. Noise and vibration are large, and equipment for noise and vibration prevention is required, which has the drawback of increasing the total cost.

Conventionally, there have been many methods for aeration, but the aeration by the bubbles rising by injecting air into the water is the main, and the aeration effect of the upper layer but the aeration effect of the water bottom and the lower layer There were some shortcomings.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks of the prior art by using a simple structure without using conventional compressors and blowers that require large equipment, maintenance and power costs. It is in the development of a device that exerts the air lift effect.

Further, another object of the present invention is to develop an apparatus capable of sucking and lifting large-sized earth and sand or cobblestones having a diameter of about 1/2 of the pressure feeding port diameter instead of a system such as a sand pump.

Another object of the present invention is to develop an aerator which does not use a compressor or a blower, which has a large noise and vibration and a high total cost.

Another object of the present invention is to develop a technique of an aeration system that does not release air in water, instead of the conventional aeration method that releases air in water and raises bubbles.

Another object of the present invention is to develop an apparatus that exerts an aeration effect on a required place of a water bottom or a lower layer.

[0013]

In order to solve the above-mentioned problems, the present invention connects a gas-liquid pressure-feeding pipe 2 from water to a gas-liquid separation device 3 by extending a gas-liquid pressure-feeding pipe 2 into water. An inlet for one end of the siphon 4 is provided above the gas-liquid separation device 3 and extends downward, and the other end of the siphon 4 is connected to the air lift pipe 7 as a bubble extruding port 6. The suction pipe is connected to the lower end of the air lift pipe 7. 8 is connected in communication, and the other end of the suction pipe 8 is used as the suction port 9. With the above configuration, the gas / liquid pressure-fed from the pump 1 for pressure-feeding the gas-liquid is passed through the gas-liquid pressure-feed pipe 2 to generate a gas in water. The liquid enters the liquid separation device 3, separates and is discharged from the lower part into the outside water, the gas enters the upper siphon 4 to form a gas siphon, and the increase of the gas causes bubbles to form air bubbles from the gas extrusion port 6 and air lift. Enter pipe 7 and don't climb Luo airlift and effective, to cause a suction force to the suction port 9, is characterized from the suction port 9 liquid or together frying suction pull the aspirate 13 near the sea bed 14 in a liquid.

Further, according to the present invention, a return pipe 16 is connected to the lower part of the gas-liquid separation device 3 and the other end is further extended into water so that the dissolved oxygen from the suction port 9 of the pipe 8 is low in dissolved oxygen. The water is suctioned and pumped, and the rich dissolved oxygen water having a large amount of dissolved oxygen is pressure-fed from the pump 1 to be discharged from the gas-liquid separation device 3 through the return pipe 16 to the water requiring the rich dissolved oxygen water from the outlet 17. It is characterized by this.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first aspect of the present invention is, as shown in FIGS. 1 and 2, from a pump 1 for pumping gas and liquid together, to extend a gas-liquid pressure-feeding pipe 2 into water and connect it to a gas-liquid separator 3. An air lift pipe 7 is provided in which an inlet at one end of the siphon 4 is provided above the gas-liquid separation device 3 and extends downward, and the other end of the siphon 4 is connected to the air lift pipe 7 as a bubble extruding port 6 so as to communicate therewith.
The suction pipe 8 is connected to the lower end of the suction pipe 8, and the other end of the suction pipe 8 is used as the suction port 9. With the above configuration, the gas-liquid pressure-fed by the pump 1 for pressure-feeding the gas-liquid is the gas-liquid pressure-feed pipe 2 And then enters the underwater gas-liquid separation device 3, the liquid is separated and released from the lower part to the outside water, the gas enters the upper siphon 4 to form a gas siphon, and the gas is increased from the gas extruding port 6 As air bubbles enter the air lift pipe 7, the air lift effect is exerted while rising, and a suction force is generated in the suction port 9, and a liquid or a liquid bottom 14 is generated from the suction port 9.
The suction object 13 in the vicinity is sucked together and lifted up.

Further, as shown in FIG. 3, the second aspect of the present invention is to connect the return pipe 16 to the lower portion of the gas-liquid separation device 3 of the first aspect of the invention, and further extend the other end into water to form the pipe 8 The poorly dissolved oxygen water with a small amount of dissolved oxygen is sucked from the suction port 9 to pump up the water, and is contacted with the atmosphere to be enriched with oxygen, or
The pumped poorly-dissolved oxygen water is pumped from the pump 1 by gas-liquid mixing to increase the dissolved oxygen to make it into rich-dissolved oxygen water on the way of pumping, and the gas-liquid separation device 3 through the return pipe 16 and the outlet 1
It is released from 7 into the required water.

According to the first and second aspects of the present invention, the pump 1, the gas-liquid separating device 3 and the air lift pipe 7 are the main components of the present invention, but the pump 1 and the air lift pipe 7 have been conventionally used. With respect to the technical device, the center of the non-conventional technical configuration of the present invention lies in the gas-liquid separation device 3. Incidentally, in the present application, the inside of the gas-liquid separation device 3 is expressed as a room.

Further, the air lift pipe 7 exhibits an air lift effect, which is conventionally called a "bubble pump". As a method of increasing the air lift effect, the gas-liquid ratio of the pump 1 is changed. In some cases, the amount of gas is increased to enhance the effect.

The reason for separating the gas and liquid is that the liquid is mixed in the air lift pipe 7 to reduce the suction force at the suction port 9 and the air lift effect is also reduced. This is because the suction force concentrates only on the suction port 9 and exerts an effect, and a large effect is exerted by separating gas and liquid and putting only gas into the air lift pipe 7.

The siphon 4 is for automatically extruding only the gas from the gas-liquid separator 3 into the air lift pipe 7, and the gas-liquid sent to the gas-liquid separator 3 under pressure enters the gas-liquid separator 3. A water level is formed, and the indoor water level 11-1 is the gas extrusion port 6
When the temperature becomes lower than that, the gas is extruded from the gas extruding port 6 to the air lift pipe 7 and becomes air bubbles to rise in the air lift pipe 7 and exert an air lift effect.

As shown in FIGS. 1 and 2, the water level change in the gas-liquid separation device 3 changes depending on the internal pressure of the associated pipes. The indoor water level 1 (11-1) to the indoor water level 3 (11-3). )
Is a water level that is automatically formed in the gas-liquid separation device 3, and fluctuates up and down depending on the internal pressure of the associated pipe. The related pipes mean the gas-liquid pressure feeding pipe 2, the suction pipe 8, the air lift pipe 7, and the discharge port from the gas-liquid separating device 3 to the outside at four locations. For example, the air lift pipe 7
When it is blocked, the indoor water level 3 (11-3) is reached, and when the outlet from the gas-liquid separator 3 to the outside is blocked, the indoor water level 1 (11-1) is reached and the pump 1 becomes a state of the indoor water level 1 (11-1) even when 1 suddenly stops, and when the suction pipe 8 is closed, the indoor water level 1 (1-1)
In the state of 1-1), when the internal pressures at four locations are balanced, the indoor water level 2 (11-2) is reached. In this way, the water level in the gas-liquid separation device 3 fluctuates up and down due to changes in the internal pressure at the four associated locations. Even if this fluctuation occurs, the function of sending only the gas of the gas-liquid separation device 3 to the air lift pipe 7 is provided. In order to maintain this, the water head a (5-1) can be changed.
In addition, when the vertical width of the water head b (5-2) is required, when the water level fluctuation width a or b is small, when liquid (water) is mixed in the siphon 4 or air bubbles (air) are mixed in the return pipe 16. Occurs, which lowers the pumping function of the air lift pipe 7. These phenomena can be easily confirmed by experiments. On the other hand, when the gas is pushed out from the bubble extrusion port 6, the indoor water level 3 (11-3) is set, and when the gas is sucked from the air lift pipe 7 side, the indoor water level 3 (11-1) is set. It can be said that
Thus, the indoor water level (11-1 to 3) is automatically formed and changes up and down, shows the water level fluctuation widths a and b, and secures the gas-liquid separation function of the gas-liquid separation device 3. It is what you need.

The gas-liquid separation device 3 needs to have a size capable of coping with the fluctuation of the water level as described above. In terms of cross-section, a cross-sectional area capable of separating gas and liquid is required, and if the area is small, the separation of gas and liquid may not proceed smoothly. Also,
The vertical length is "water head a + water head b" that can respond to fluctuations in water level.
The width of the above length is required. When the head length b below the gas extrusion port 6 is small, the pressure-fed gas may flow out to the outside to waste the gas. When the head length a is small, when the suction port 9 is clogged, there is a risk that not only the gas of the gas-liquid separation device 3 but also the liquid is sucked to reduce the bubble effect. a and b
We think that the value of should be found by experiment.

Among the main factors affecting the effect of the water bottom bubble excavator, the air lift effect in the air lift pipe 7 is as follows. Increase the amount of gas-liquid pumped 2. 2. Increase the length of the air lift pipe 7 in water 3. 3. Reduce the height above the water surface. 4. Concerning the effect of transporting solids by increasing the diameter of the suction pipe 8 and shortening its length Increase the gas-liquid flow rate (greater than the sedimentation rate of solids) 6. 6. Reduce the diameter of the suction pipe and air lift pipe 7 (because the flow velocity becomes faster). Decrease the particle size of solids (because the sedimentation speed is low)

The water bottom means both shallow and shallow, and includes seawater and fresh water, and also includes water and the water bottom, and is also applied to the water bottom of natural and artificial lakes and seas. Also suction 13
The term is a solid, liquid, granular or mud-like material containing deep-water, such as earth and sand, cobblestones, seafood, garbage, etc. that are smaller than the diameter of an airlift pipe such as cuttings and collected materials, hot water, hot water, It includes liquids such as cold water, and also includes resource water in deep water.

Although details of the pump 1 are omitted here, the pump 1 is a device for alternately pumping gas and liquid and pumping them through the same pipe, and it is possible to increase the pressure of gas and liquid without using a conventional compressor or blower. Say a device that can.

The reason why the pump 1 is used is that both gas and liquid are compressed and pressure-fed by the same pipe, so that an air lift effect and a reverse air lift effect occur, and the pressure can be deeper than the conventional pressure.

Since the position of the bubble extruding port 6 moves up and down depending on the situation, it is effective to have a space above and below the gas-liquid separation device 3, that is, near the middle, and it may be a communication connecting portion between the suction pipe and the air lift pipe. The length of each pipe 8 determines the suction force in consideration of the depth of the suction port 9, the injection position of gas, the length of the air lift effect, the specific gravity and amount of the suctioned substance, the volume ratio and the amount of gas-liquid, and the like. It is necessary to determine the vertical length of the gas-liquid separation device 3 from the magnitude of the suction force.

As the bubbles rise near the water surface, the volume expansion coefficient of the bubbles is calculated from the above equation. However, the air-lift effect may be hindered because the gas-liquid volume ratio may change abruptly. An expansion gas adjusting unit may be provided near the water surface of the pipe to appropriately adjust the amount of gas-liquid. That is, an excess gas passage may be provided in order to discharge a part of the expanded gas through another route. The water depth of the gas-liquid separator 3 is 50
In case of 0m, when the volume in the atmosphere is 1, water depth is 10m
The volume is 1/2, the depth is 30 m, the volume is 1/4, 50 m is 1/6, 100 m is 1/11, and 500 m is 1/5.
It becomes 1. That is, the volume is 1/6 at 50m near the water surface.
It can be seen that the volume change is large, the change rate is not large at deeper depths, and the opposite volume change occurs when bubbles rise, and the volume increases 6 times at 50 m near the water surface of the upper layer.

As described above, the bubbles in the air lift pipe from a large depth rapidly expand when approaching the water surface. When a gas-liquid multiphase flow is discharged into deep water, the volume of the gas changes remarkably as the gas approaches the water surface, which causes volume expansion with depth. The relationship between water depth and bubble volume is

The submerged bubble excavating device may be installed on land, but it is effective to install it on a ship and close to the deep sea. There is also a method of floating the surface of the sea and installing it in the place where the bottom of the sea is excavated or fish and shellfish are collected.

The drive source of the pump 1 for pressure-feeding gas and liquid is not particularly limited, but is mainly driven by a motor.

As a device for easily sucking and lifting in water or the like according to claim 2, a remote control system for performing operations such as underwater monitoring, crushing, and excavation in the vicinity of the suction port 9 of the suction pipe 8. The sampling operation monitoring device 10 may be attached. It monitors the bottom of the water, drills,
It can be easily sucked from the suction port 9 of the air lift pipe 7 by various operations, such as subdivision, loosening, clogging prevention, and a partition at the inlet of the suction port to prevent clogging with oversized items. This is because

[0033]

According to the present invention, the conventional apparatus, which has a very small application only with the pump 1 for sending gas and liquid together and the air lift pipe 7 (bubble pump), is provided with the gas-liquid separation device 3 so that the Pioneered new uses for.

According to the present invention, it is possible to develop a technique with a small total cost by an easy method that does not use a blower or a compressor for air supply for a conventional bubble pump.
That is, the use of the pump 1 for sending gas and liquid eliminates the need for a cooling device, a compressor, and a blower required for normal compression work, thus saving equipment including power costs and maintenance costs.

According to the present invention, since no blower or compressor is used, no noise or vibration prevention equipment is required. Since noise and vibration are extremely small, there is an advantage that a facility to prevent them is unnecessary.

According to the present invention, it can be used together with a conventional inefficiency bubble pump to bring it to a practically large size and excavate the bottom of a deep water in a wide water depth range, lift deep sea water, aerate and clean it. It has the effect of being realized as a device that can be lifted to the ground. It has the effect of lifting the resources and materials that sleep on the bottom of the water to the ground in a wide range of water depth from small water depth to several thousand meters.

According to the present invention, if the size is equal to or smaller than the diameter of the air lift pipe 7 (however, 1/2 or less of the pipe diameter is preferable in consideration of safety), the solid, granular, mudous, It has the advantage that it can be used for lifting liquids.

According to the present invention, even when it is used for lifting solid matter such as the bottom of water or soil and sand, there is an effect that the work can be performed with the contamination of the bottom of the water being kept to a minimum. Most of the generated sewage is sucked in, which enables excavation without increasing the pollution of the water area during underwater excavation.

According to the present invention, not only freshwater but also seawater can be applied, and there is an advantage that it can be used for dredging of underwater water bottom in ponds, artificial lakes and the like.

According to the present invention, water hammer and cavitation are less likely to occur when a gas-liquid pump or the like is used, and therefore, there is an advantage that these countermeasure facilities are unnecessary.

Furthermore, the gas-liquid separation device, which is the core of the present invention, has the advantage that even if the pump 1 and the bubble pump are used in combination, all of them can be operated with only one power of the pump 1.

The features up to now are effectively used not only for clean water but also for aeration work by circulating a liquid containing a large amount of dirt and solids such as sewage which has been conventionally difficult due to clogging. Became possible.

According to the present invention, the conventional aeration method of injecting into water is not the aeration method utilizing the rising convection of bubbles, but the aeration effect is exerted on the way of passing through the pump and the pipe, and the It has become possible to discharge water to necessary water areas.

According to the present invention, after the poorly dissolved oxygen water at a necessary place (depth) such as the bottom of the water, which has been considered to be the most difficult in the past, is sucked and aerated in the passing pipe to obtain the rich dissolved oxygen water. It was also possible to discharge the product by piping to the required location (depth). In particular, it has become possible to suck poorly dissolved oxygen water in the deep bottom of a dam, aerate it into rich dissolved oxygen water, and then return it to the deep bottom of a dam.

[Brief description of drawings]

FIG. 1 shows an example of the case of claim 1 of the present invention, wherein (A) of the water bottom bubble excavating device is a gas-liquid separating device 3 and a siphon 4.
Fig. 2 is a detailed side view showing an example of a side sectional view, illustrating the principle of generation of the suction and air lift effects, which is installed by suspending in water and is equipped with the remote monitoring and sampling device 10, (b) is gas-liquid separation An example in which the device 3 is installed on the water bottom 14 and an air lift pipe 7 and a suction pipe 8 are provided inside the gas-liquid separation device 3 together with the gas extrusion port 6 is shown. (C) shows an example of a bucket or the like attached as the sampling operation monitoring device 10 in the vicinity of the suction port 9 of the present invention.

FIG. 2 is an example diagram showing an overall conceptual diagram of the same purpose as in FIG. 1 of the present invention. (A) is the one installed on the bottom 14 of the water.
An example figure is shown, and (b) shows an example figure in which the remote monitoring and sampling device 10 is installed in a suspended manner in water.

FIG. 3 shows an example in which the water bottom bubble excavation device is used for aeration of the water bottom in the case of claim 2 of the present invention, and (a) is a suspension type installation in water and is installed outside the gas-liquid separation device 3. The example figure which provided the air lift pipe 7 and was stored in the siphon cover 12.
(B) shows an example in which the gas-liquid separation device 3 is installed on the water bottom 14 and the air-lift pipe 7, the suction pipe 8 and the gas extrusion port 6 are provided inside the gas-liquid separation device 3. (C) is a partial detailed view of the gas extrusion port 6.

[Explanation of symbols]

1 pump 2 Gas-liquid pressure feed pipe 3 Gas-liquid separation device 4 siphon 5-1 Water head a 5-2 Hydro head b 6 Gas extrusion port 7 Air lift pipe 8 suction pipe 9 Suction port 10 Collection operation monitoring equipment 11-1 Indoor water level 1 11-2 Indoor water level 2 11-3 Indoor water level 3 12 siphon cover 13 aspirate 14 bottom 15 Expansion gas adjustment unit 16 Return pipe 17 Outlet

Claims (2)

(57) [Claims] 1. A pump 1 for pumping both gas and liquid,
The gas-liquid pressure-feeding pipe 2 is extended into water and connected to the gas-liquid separation device 3, an inlet at one end of the siphon 4 is provided at the upper part of the gas-liquid separation device 3 and extended downward, and the other end of the siphon 4 is bubble-pressed. With the above configuration, the outlet 6 is connected to the air lift pipe 7, the suction pipe 8 is connected to the lower end of the air lift pipe 7, and the other end of the suction pipe 8 is used as the suction port 9. The gas and liquid pressure-fed from the pump 1 are passed through the gas-liquid pressure feed pipe 2 and the gas-liquid separation device 3 in water.
Liquid enters and separates into the outside water from the bottom,
The gas enters the upper siphon 4 to form a gas siphon, and as the amount of gas increases, it becomes bubbles from the gas extrusion port 6 into the air lift pipe 7 and exerts an air lift effect while rising, and the suction force is applied to the suction port 9. The water bottom air bubble excavating device that raises and sucks the liquid or the suctioned material 13 near the water bottom 14 together from the suction port 9 and lifts the liquid. 2. A return pipe 16 is communicatively connected to the lower portion of the gas-liquid separation device 3, and the other end is further extended into water and a discharge port 17 is provided.
Then, the poorly-dissolved oxygen water or the like having a small amount of dissolved oxygen is sucked from the suction port 9 to pump water, and the rich dissolved oxygen water or the like having a large amount of dissolved oxygen is pressure-fed from the pump 1 to the gas-liquid separation device 3 via the return pipe 16. The water-bottom bubble excavating device according to claim 1, wherein the dissolved oxygen water is discharged from the discharge port 17 to a water area that requires it.