JP4541002B2 - Carbon dioxide spraying equipment - Google Patents

Description

  The present invention relates to a carbon dioxide spraying device for spraying droplets of carbon dioxide in the sea.

In recent years, global warming has become a major problem, and as a countermeasure, it is considered to suppress an increase in the concentration of carbon dioxide that brings about the greenhouse effect in the atmosphere.
As one method for suppressing the increase in carbon dioxide concentration, carbon dioxide gas emitted from fixed sources of carbon dioxide such as business establishments and thermal power plants is recovered and liquefied, and this liquid carbon dioxide is sent into the sea. The concept of isolating it from the atmosphere for a long time has been proposed.
Here, in this method, it is necessary to suppress the increase in the concentration of carbon dioxide in the seawater to an appropriate range so as not to destroy the ecosystem in the sea, so in order to store a larger amount of carbon dioxide in the sea, It is necessary to spread carbon dioxide over a wider area.

For this reason, a device for spraying carbon dioxide in the sea is required.
As such a carbon dioxide spraying device, for example, there is a dilution discharge device described in Patent Document 1 described later.
This dilution discharge apparatus is provided in a supply pipe suspended from a ship in the sea, and has a nozzle for spraying liquid carbon dioxide.

This dilution and discharge apparatus forms liquid droplets of carbon dioxide of a predetermined size in the sea by spraying liquid carbon dioxide from a nozzle while being towed by a ship. The diffusion of carbon dioxide not only in the horizontal direction but also in the vertical direction by using the gradual dissolution in the surrounding seawater while slowly rising due to the buoyancy caused by the specific gravity difference with the seawater Is to do.
Since the dissolution rate of carbon dioxide droplets is proportional to the contact area between the droplets and seawater, the distance to rise before the carbon dioxide droplets disappear is appropriate for controlling the carbon dioxide concentration in seawater. It is necessary to control the surface area of the droplet so that it falls within the range. Here, since the droplet is formed in a substantially spherical shape, the surface area of the droplet is controlled by controlling the diameter of the droplet.

JP 2001-187330 A (paragraphs [0012] to [0014] and FIG. 1)

However, since the dilution discharge apparatus is towed by a ship, the turbulence of the ocean current occurs behind the towing direction.
If this turbulence is large, the proper formation of carbon dioxide droplets sprinkled from the dilute discharge device may be hindered, making it impossible to generate droplets of a desired size.

Also, the pipe to which the carbon dioxide spraying device is attached receives fluid resistance during towing,
Since the lower end is inclined with respect to the upper end so that the lower end is located behind the towing direction, the dilution discharge device is also inclined by the inclination of the pipe.
When the dilution discharge device is inclined in this way, the fluid resistance of the dilution discharge device increases, and the turbulence of the ocean current that occurs behind the towing direction also increases, which may cause a large turbulence in the sprayed liquid carbon dioxide flow. .

  This invention is made | formed in view of such a situation, Comprising: It aims at providing the carbon dioxide spraying apparatus which can form the droplet of a carbon dioxide in a desired magnitude | size.

In order to solve the above problems, the carbon dioxide spraying apparatus of the present invention employs the following means.
That is, a carbon dioxide spraying device according to the present invention is a carbon dioxide spraying device provided in a pipe that is suspended from a ship and towed in the sea, and sprays liquid carbon dioxide supplied from the ship through the pipe. The piping is provided so as to be swingable about a horizontal axis perpendicular to the towing direction.

  Since the carbon dioxide spraying device configured as described above is provided so as to be swingable about a horizontal axis perpendicular to the towing direction with respect to the piping, at the time of towing, regardless of the magnitude of the inclination of the piping, Take the posture to minimize fluid resistance. Thereby, the disturbance of the ocean current behind the carbon dioxide spraying device can be minimized, and the liquid carbon dioxide can be sprayed satisfactorily.

  As a connection structure between the carbon dioxide spraying device and the pipe, for example, hinge coupling can be employed.

  Further, the carbon dioxide spraying device according to the present invention is the carbon dioxide spraying device, wherein the liquid carbon dioxide is supplied from the pipe and the liquid carbon dioxide is discharged, and provided between the pipe and the nozzle. And an apparatus main body that accommodates the piping equipment, and the apparatus main body is streamlined with respect to the towing direction.

  In the carbon dioxide spraying device configured in this way, the piping equipment provided between the pipe and the nozzle is housed in the device body that is streamlined with respect to the towing direction, so the fluid resistance of the carbon dioxide spraying device is Further, the turbulence of the ocean current occurring behind the carbon dioxide spraying device becomes smaller.

In this carbon dioxide spraying device, the nozzle may be provided on the upper surface side of the device main body.
In this case, since the nozzle is provided on the upper surface side of the apparatus main body, the liquid carbon dioxide sprayed from the nozzle is less likely to be caught in the turbulence of the ocean current generated behind the apparatus main body. Can be performed satisfactorily.

  Furthermore, in this carbon dioxide spraying device, a plurality of nozzles may be provided with their positions shifted in a direction crossing the towing direction.

  In this case, the region in which the liquid carbon dioxide is dispersed can be expanded in a direction crossing the towing direction, so that a larger amount of liquid carbon dioxide can be dispersed while suppressing an increase in the concentration of carbon dioxide in the sea. .

Moreover, the carbon dioxide spraying apparatus concerning this invention is a carbon dioxide spraying apparatus of Claim 1 , Comprising: The said nozzle is provided in the upper surface side and lower surface side of the said apparatus main body, It is characterized by the above-mentioned.

In the carbon dioxide spraying device configured in this way, nozzles are provided not only on the upper surface side of the device main body but also on the lower surface side.
For this reason, in this carbon dioxide spraying device, the number of nozzles can be increased without increasing the size of the device body, so that the amount of carbon dioxide spraying can be increased while minimizing the increase in fluid resistance. Can do.
Further, in this carbon dioxide spraying device, when the number of nozzles is the same, the device main body can be further downsized and the fluid resistance can be further reduced.

  Further, in this carbon dioxide spraying device, at least the nozzles provided on the upper surface side of the apparatus main body and the nozzles provided on the lower surface side of the apparatus main body are provided with their positions shifted in a direction intersecting the towing direction. May be.

  As described above, since the nozzle installation positions are shifted in the direction crossing the towing direction between the upper surface side and the lower surface side of the apparatus main body, the liquid is sprayed from the nozzles provided below the apparatus main body and rises by buoyancy. The droplets are less likely to come into contact with the carbon dioxide droplets sprayed from the nozzles provided above the apparatus main body, and the carbon dioxide droplets sprayed from each nozzle can be kept in an appropriate size.

  Further, in the carbon dioxide spraying apparatus having the above-described apparatus main body, the apparatus main body is provided with a pipe connection structure and a piping facility in the central part in the towing direction, and is provided with a flap for posture maintenance. It is good also as composition which has.

Here, the streamlined apparatus main body is thickest at the center in the towing direction. For this reason, if the member accommodated in an apparatus main body is installed in the towing direction center part of an apparatus main body, the thickness and length (length of the towing direction) of an apparatus main body can be reduced, and an apparatus main body can be reduced in size. .
However, when the connection structure with the pipe is provided in the central portion of the towing direction of the apparatus main body, the connection position with the pipe is deviated from the center of lift generated by the relative flow of the apparatus main body, and the apparatus main body There is a risk of tilting.
In the carbon dioxide spraying device according to the present invention, a connection structure with the piping and the piping equipment are provided at the center of the towing direction of the device main body, and further, a flap for maintaining the posture is provided in the device main body. Therefore, the apparatus main body can be held in a posture with less fluid resistance while reducing the size of the apparatus main body.

  In the carbon dioxide spraying apparatus having the above-described apparatus main body, the carbon dioxide spraying apparatus has a manifold provided to be swingable about a horizontal axis perpendicular to the towing direction with respect to the pipe, and the apparatus main body is A plurality of units may be provided in parallel.

  In the carbon dioxide spraying device configured as described above, since the width of each device main body as viewed from the towing direction is small, the posture of the device main body is not easily disturbed (for example, rolling) due to receiving fluid resistance, and the towing direction Since the turbulence of the ocean current at the rear is also reduced, carbon dioxide droplets can be formed satisfactorily.

  In the carbon dioxide spraying device, the manifold itself may be streamlined with respect to the towing direction, or the manifold may be provided with a fairing that is streamlined with respect to the towing direction.

  In the carbon dioxide spraying device configured in this way, the fluid resistance of the manifold is reduced, so that the fluid resistance of the carbon dioxide spraying device is further reduced, and the turbulence of the ocean current occurring behind the carbon dioxide spraying device is further reduced.

  According to the carbon dioxide spraying device configured in this manner, since the disturbance of the ocean current that occurs in the rear of the towing direction is reduced, the sprayed liquid carbon dioxide can be formed into droplets of a desired size. The carbon dioxide concentration inside can be controlled satisfactorily.

Embodiments and reference examples according to the present invention will be described below with reference to the drawings.
[ Reference Example 1 ]
Hereinafter, Reference Example 1 of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the carbon dioxide spraying device 1 according to the first reference example is provided in a pipe P that is suspended and towed from a marine vessel S that sails on the sea, and has an ocean middle layer (water depth 1000 to 2500 m). ).
The ship S is provided with a storage tank that stores liquid carbon dioxide and a pump that pumps the liquid carbon dioxide in the storage tank to the pipe P. The carbon dioxide spraying device 1 stores the liquid carbon dioxide through the pipe P. Liquid carbon dioxide in the tank is supplied.

  As shown in FIG. 2, the carbon dioxide spraying device 1 includes a device main body 2 attached to the lower end of the pipe P, and a plurality of nozzles 3 that are supplied with liquid carbon dioxide from the pipe P and spray this liquid carbon dioxide. Have. Here, the pipe P and each nozzle 3 are connected to each other through a pipe W.

The apparatus main body 2 is formed in a substantially rectangular plate shape in plan view, and a pipe P is connected to one long side of the central portion in the longitudinal direction. Further, the side cross section of the apparatus main body 2 is streamlined with respect to the towing direction in order to reduce the fluid resistance generated during towing.
The apparatus main body 2 is provided so as to be swingable about a horizontal axis perpendicular to the towing direction with respect to the pipe P. In the first reference example , a hinge 4 having a horizontal axis 4 a orthogonal to the towing direction is provided on the one long side of the apparatus body 2, and the apparatus body 2 is connected to the pipe P by hinge coupling by the hinge 4. On the other hand, it is connected to be swingable around a horizontal axis orthogonal to the towing direction.

  Here, in the pipe W connecting the pipe P and the nozzle 3, a flexible pipe having a pressure-resistant structure is used so that the vicinity of the hinge 4 can bend and stretch following the swing of the hinge 4. . As the flexible piping having a pressure-resistant structure, for example, one having a configuration in which the periphery of a flexible tube such as a rubber tube is covered with a wire, a metal mesh, or other reinforcing material is used.

Each nozzle 3 is provided in the apparatus main body 2 with a discharge port for discharging liquid carbon dioxide directed rearward in the towing direction.
Each of these nozzles 3 is provided with a plurality of positions shifted in the longitudinal direction (that is, the direction intersecting the towing direction) with respect to the upper surface side of the apparatus body 2. And attached in a state spaced apart from the apparatus main body 2 upward.
The nozzles 3 are streamlined with respect to the towing direction in order to reduce the fluid resistance during towing. Here, the diameter of the discharge port of each nozzle 3 is set to be approximately the same as the preferable size of the carbon dioxide droplet.

As shown in FIG. 3, various piping facilities are provided between the piping P and each nozzle 3, and these piping facilities are accommodated in the apparatus main body 2.
In this reference example 1 , as a piping facility, a manifold 6 constituting a part of a pipe W connecting the pipe P and each nozzle 3 and a reverse flow of seawater from the nozzle 3 provided in each pipe W are prevented. And a relief valve 8 that is provided in each pipe W and allows the liquid carbon dioxide to pass only when the back pressure of the liquid carbon dioxide supplied to the nozzle 3 becomes equal to or higher than the surrounding water pressure. Is provided.

As shown in FIG. 1, the carbon dioxide spraying device 1 configured as described above is towed by the ship S at a substantially constant speed while being suspended from the ship S through the pipe P in the sea.
The carbon dioxide spraying apparatus 1 discharges liquid carbon dioxide from the discharge port of the nozzle 3 by being supplied with liquid carbon dioxide from the storage tank on the ship S through the pipe P while being towed in the sea. Is.

Here, since the pressure in the pipe P is maintained by the relief valve 8, carbon dioxide is maintained in a liquid phase throughout the entire area of the pipe P.
Further, since the backflow of seawater from the nozzle 3 into the pipe P is prevented by the check valve 7, the formation of CO2 hydrate in the pipe P is prevented, and the clogging of the pipe P is prevented.
Further, since each nozzle 3 is connected to the pipe P via the manifold 6, liquid carbon dioxide is supplied to each nozzle 3 from the pipe P at an equal pressure, and the liquid dioxide from each nozzle 3 is supplied. Carbon is discharged uniformly.

The discharge speed of the liquid carbon dioxide from the nozzle 3 is substantially the same as the relative speed v of the liquid carbon dioxide discharge device 1 during towing with respect to the surrounding seawater. That is, the liquid carbon dioxide discharged from the nozzle 3 is almost stationary with respect to the surrounding seawater.
For this reason, when there is no disturbance in the flow of the surrounding seawater, the liquid carbon dioxide discharged from the nozzle 3 becomes droplets having a size almost the same as the diameter of the discharge port of the nozzle 3, and the carbon dioxide. It spreads in a strip shape along the trajectory of the carbon spraying device 1.

When these carbon dioxide droplets come into contact with the surrounding seawater, the surface is converted to CO2 hydrate.
Further, at this depth, the carbon dioxide droplets are slightly smaller in density than the surrounding seawater, and thus slowly rise after being sprayed from the nozzle 3. These droplets gradually melt into the surrounding sea and become smaller, and disappear when they rise to a predetermined height.
Here, assuming that the amount of liquid carbon dioxide sprayed by the carbon dioxide spraying device 1 per unit time is Q, the distance that has risen since the droplet was discharged is h, and the width of the droplet band is b, The dilution rate (initial dilution rate αS) of carbon dioxide in the stage before natural diffusion due to influence is expressed by the following equation (1).
αS = Q / bvh (1)
The upper limit of the value of the initial dilution rate αS is determined so that the increase in the carbon dioxide concentration in the seawater is within a range that does not destroy the ecosystem in the sea.
If the initial diameter of the carbon dioxide droplet is appropriate (about 20 mm), the droplet may rise up to about 1000 m from the spraying position. It is possible to dilute to

In the carbon dioxide spraying device 1 according to the first reference example , since each piping facility is accommodated in the device main body 2, the disturbance of the surrounding ocean current is reduced as compared with the configuration in which these are exposed in the sea. . Since the apparatus main body 2 is provided so as to be swingable around the horizontal axis orthogonal to the towing direction with respect to the pipe P, the fluid resistance is the smallest during towing regardless of the inclination of the pipe P. Take a posture.
Thereby, the disturbance of the ocean current behind the carbon dioxide spraying apparatus 1 is suppressed to the minimum.

Further, in the carbon dioxide spraying device 1 according to the first reference example , the device main body 2 and the nozzle 3 are streamlined with respect to the towing direction, so that the fluid resistance of the carbon dioxide spraying device 1 is further reduced, and the carbon dioxide The turbulence of the ocean current that occurs behind the towing direction of the spraying device 1 becomes smaller.

  Further, in the carbon dioxide spraying device 1, the nozzle 3 is provided on the upper surface side of the device main body 2, and the liquid carbon dioxide that is sprayed and rises from the nozzle 3 is disturbed in the ocean current that is generated behind the device main body 2 in the towing direction. It is hard to get caught in.

Thus, in this carbon dioxide spraying apparatus 1, since the liquid carbon dioxide discharged from the nozzle 3 is less likely to be affected by the disturbance of the ocean current, the liquid carbon dioxide discharged from the nozzle 3 is used as the diameter of the discharge port of the nozzle 3. The droplets can be approximately the same size.
That is, in this carbon dioxide spraying apparatus 1, since the diameter of the carbon dioxide droplet can be maintained at an appropriate size, the value of h shown in the above formula (1) is higher than that of the carbon dioxide spraying apparatus having the conventional configuration. Can be increased.

  Further, in this carbon dioxide spraying apparatus 1, since a plurality of nozzles 3 are provided with their positions shifted in the direction intersecting the towing direction, the area for spraying liquid carbon dioxide can be expanded in the direction intersecting the towing direction. it can. That is, in this carbon dioxide spraying apparatus 1, the value of b shown in the above formula (1) can be made larger than that of the carbon dioxide spraying apparatus having the conventional configuration.

  Thereby, in this carbon dioxide spraying apparatus 1, it is possible to increase the spraying amount Q of liquid carbon dioxide while suppressing an increase in the concentration of carbon dioxide in seawater to the same extent as before.

Here, in the first reference example , the example in which the nozzle 3 is provided only on the upper surface side of the apparatus main body 2 is shown, but the present invention is not limited thereto, and the nozzle 3 may be provided on the lower surface side of the apparatus main body 2.

[ Reference Example 2 ]
Next, Reference Example 2 of the present invention will be described with reference to FIGS.
As shown in FIGS. 4 and 5, the carbon dioxide sparging device 21 according to the present embodiment 2, the carbon dioxide distribution apparatus 1 shown in Reference Example 1, a nozzle 3, not only the upper surface of the apparatus body 2, The main feature is that it is also provided on the lower surface side.
Furthermore, in this carbon dioxide spraying device 21, as shown in FIG. 5, the nozzle 3 provided on the upper surface side of the apparatus main body 2 and the nozzle 3 provided on the lower surface side of the apparatus main body 2 are arranged in a direction intersecting the towing direction. The position is shifted.
In this reference example 2 , the apparatus body 2 is provided with nozzles 3 symmetrically with respect to the central portion in the longitudinal direction. Further, the apparatus main body 2 is alternately provided with the nozzle 3 on the lower surface side and the nozzle 3 on the upper surface side in this order from one end side in the longitudinal direction toward the center portion.
Here, the number of nozzles 3 installed on the upper and lower surfaces of the apparatus main body 2 is the same.

In the carbon dioxide spraying device 21 configured in this way, the number of nozzles 3 can be increased without increasing the size of the device body 2 in the direction crossing the towing direction. It is possible to increase the amount of carbon dioxide sprayed while suppressing the amount of carbon dioxide.
Further, in this carbon dioxide spraying device 21, when the number of nozzles 3 installed is the same as the number of carbon dioxide spraying devices 1 shown in Reference Example 1 , the size of the device body 2 in the direction intersecting the towing direction is further reduced. The fluid resistance can be further reduced.

  Further, since the installation positions of the nozzles 3 are shifted in the direction intersecting the towing direction on the upper surface side and the lower surface side of the apparatus main body 2 in this way, the nozzles 3 are sprayed from the nozzles 3 provided below the apparatus main body 2. The droplets rising due to buoyancy are difficult to come into contact with the carbon dioxide droplets sprayed from the nozzles 3 provided above the apparatus main body 2, so that the carbon dioxide droplets sprayed from the nozzles 3 are appropriately sized. Can be kept.

Here, in this reference example 2 , the nozzle 3 provided on the upper surface side of the apparatus main body 2 and the nozzle 3 provided on the lower surface side of the apparatus main body 2 are provided with their positions shifted in the direction intersecting the towing direction. Although shown, it is not restricted to this, For example, the nozzle 3 provided in the upper surface side of the apparatus main body 2 and the nozzle 3 provided in the lower surface side of the apparatus main body 2 like the carbon dioxide spraying apparatus 26 shown in FIG. The positions in the direction crossing the towing direction may be the same.
In this case, the balance of the fluid resistance applied to the nozzle 3 in the vertical direction of the apparatus main body 2 is maintained, so that the attitude of the apparatus main body 2 becomes more stable.

[ First embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 7, the carbon dioxide spraying device 31 according to this embodiment is the same as the carbon dioxide spraying device 1 shown in Reference Example 2 , in which the main body 2 is connected to the pipe P and the piping equipment is in the towing direction. The main feature is that a flap 32 for maintaining the posture is further provided in the central portion.
Hereinafter, about this Embodiment, about the structure same or similar to the carbon dioxide spraying apparatus 1 shown to the reference example 1 , it shows using the same code | symbol and abbreviate | omits detailed description.

In the apparatus main body 2, the manifold 6, the check valve 7, and the relief valve 8 are provided in the central portion in the towing direction, that is, the thickest part in the apparatus main body 2 that forms a side cross-sectional flow line shape (in FIG. 7, the manifold is Only 6 is shown).
Here, in the present embodiment, the manifold 6 is housed in the apparatus main body 2 only at the lower end. That is, the thickness of the apparatus main body 2 is set to be thinner than the thickness (height) of the manifold 6.
Further, in the manifold 6, a fairing 33 that forms a streamline with respect to the towing direction in a plan view is provided at an upper portion protruding from the apparatus main body 2 in order to reduce fluid resistance generated during towing.

  Furthermore, the apparatus main body 2 is provided with a flap 32 for maintaining a posture on the rear end side in the towing direction. The flap 32 is provided to be inclined so that the rear end in the towing direction faces upward. Here, this flap 32 is good also as a structure which can adjust the inclination-angle.

In the carbon dioxide spraying device 31 configured as described above, in the device main body 2, the piping equipment such as the manifold 6 is the thickest in the device main body 2 in which the central portion in the towing direction of the device main body 2, that is, the side section is streamlined. Since it is provided in a certain part, the thickness and length L (length in the towing direction) of the apparatus main body 2 can be reduced.
Thereby, the apparatus main body 2 can be reduced in size, fluid resistance can be made still smaller, and the turbulence of the ocean current which arises behind the towing direction of the carbon dioxide spraying apparatus 31 can be made small.
Moreover, since the distance between the manifold 6 and each nozzle 3 is reduced, the length of the pipe W can be shortened, and the layout of the piping facility is facilitated.
In the present embodiment, the manifold 6 is provided with the upper part protruding above the apparatus main body 2, but the apparatus main body 2 itself can be made smaller by that amount, so that the entire manifold 6 is accommodated in the apparatus main body 2. Compared with the case where it is set as the structure to do, fluid resistance becomes small.

Here, in the above configuration, the connection position with the pipe P and the lift center position generated by the relative flow of the apparatus main body 2 are deviated, so that the apparatus main body 2 may be inclined. Specifically, a force in a direction in which the front side in the towing direction is directed downward acts.
However, in the carbon dioxide spraying device 31 according to the present embodiment, the device main body 2 is provided with a flap 32 for maintaining the posture. The flap 32 receives a sea current relative to the apparatus body 2 when the apparatus body 2 is towed, so that a downward force F acts on the rear portion of the apparatus body 2 in the towing direction. In the spraying device 31, the device main body 2 can be held substantially horizontally to reduce the fluid resistance.

  Here, the force F acting on the flap 32 increases in proportion to the magnitude of the inclination angle of the flap 32 with respect to the horizontal plane and the speed of the ocean current relative to the carbon dioxide spraying device 31, but the carbon dioxide spraying device. Since the towing speed of 31 is substantially constant, the inclination angle of the flap 32 is fixed to an appropriate angle corresponding to the towing speed in advance.

[ Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 8 and 9, the carbon dioxide spraying device 41 according to the present embodiment is provided with a manifold 42 provided so as to be swingable around a horizontal axis perpendicular to the towing direction with respect to the pipe P, With respect to this manifold 42, a plurality of apparatus main bodies 2 of the carbon dioxide spraying apparatus 21 shown in Reference Example 2 including a plurality of nozzles 3 provided in the apparatus main body 2 are provided in parallel via a pipe 43. Is the main feature.

As shown in FIG. 8, the manifold 42 is provided with a hinge 44 having a horizontal axis 44 a orthogonal to the towing direction with respect to the pipe P, and the manifold 42 is connected to the pipe P by hinge coupling by the hinge 44. On the other hand, it is connected to be swingable around a horizontal axis orthogonal to the towing direction.
Here, in the pipe W connecting the pipe P and the manifold 42, a flexible pipe having a pressure-resistant structure is used so that the vicinity of the hinge 44 can bend and stretch following the swing of the hinge 44. .
Further, as shown in FIG. 9, the manifold 42 is provided with a fairing 46 that is streamlined with respect to the towing direction in a plan view.

As shown in FIGS. 8 and 9, the pipe 43 connecting the manifold 42 and each device main body 2 is configured by a rigid pipe body that protrudes backward from the manifold 42 in the towing direction or obliquely rearward. It also serves as a support member for the apparatus main body 2.
In the present embodiment, the pipe 43 extends from the manifold 42 toward an oblique rear in the towing direction (side or up and down with respect to the towing direction), and extends backward from the tip of the inclined portion 43a in the towing direction. And a straight pipe portion 43b.

Each device main body 2 is attached to each pipe 43 behind the manifold 42, and each device main body 2 is made of carbon dioxide discharged from a nozzle 3 provided in each device main body so that the device main bodies 2 do not contact each other. At least one of the vertical direction, the direction crossing the towing direction, and the position in the towing direction is changed so as not to contact carbon.
Each device main body 2 is connected to the pipe 43 by hinge coupling or the like, and can swing around a horizontal axis perpendicular to the towing direction.

  In the carbon dioxide spraying device 41 configured as described above, the width of each device body 2 viewed from the towing direction is smaller than that of the carbon dioxide spraying device 21 in which the same number of nozzles 3 are provided in one device body 2. Disturbance of posture (for example, rolling, etc.) due to receiving fluid resistance in the apparatus main body 2 is less likely to occur, and disturbance of ocean currents in the rear of the towing direction is reduced, so that carbon dioxide droplets can be formed satisfactorily. .

  Further, in this carbon dioxide spraying device 41, since the fluid resistance of the manifold 42 is reduced by the fairing 46, the fluid resistance of the carbon dioxide spraying device 41 as a whole is further reduced, and the turbulence of the ocean current that occurs behind the towing direction is further reduced. Get smaller.

Here, in the present embodiment, an example in which the fairing 46 that is streamlined with respect to the towing direction is provided in the manifold 42 is shown. However, the present invention is not limited to this example. It may be formed into a streamlined shape.
Moreover, in this Embodiment, although the example using the apparatus main body 2 of the carbon dioxide spraying apparatus 21 shown in the reference example 2 was shown as the apparatus main body 2, it is not restricted to this, Reference Example 1 and Reference Example 2 The apparatus main body 2 of the carbon dioxide spraying apparatus 1, 26, 31 shown in the first embodiment may be used.

It is a figure which shows roughly the usage pattern of the carbon dioxide spraying apparatus concerning the reference example 1 of this invention. It is a side view which shows the structure of the carbon dioxide spraying apparatus concerning the reference example 1 of this invention. It is a longitudinal cross-sectional view which shows the carbon dioxide spraying apparatus concerning the reference example 1 of this invention from the towing direction back. It is a side view which shows the structure of the carbon dioxide spraying apparatus concerning the reference example 2 of this invention. It is a figure which shows the carbon dioxide spraying apparatus concerning the reference example 2 of this invention from the towing direction back. It is a figure which shows the other example of a carbon dioxide spraying apparatus concerning the reference example 2 of this invention from the back of a towing direction. It is a side view showing composition of a carbon dioxide spraying device concerning a first embodiment of the present invention. It is a side view which shows the structure of the carbon dioxide spraying apparatus concerning 2nd embodiment of this invention. It is a top view which shows the structure of the carbon dioxide spraying apparatus concerning 2nd embodiment of this invention.

1, 2, 26, 31, 41 Carbon dioxide spraying device 2 Device body 3 Nozzle 4, 44 Hinge (connection structure)
32 Flap 42 Manifold 46 Fairing P Piping S Ship

Claims (3)

A carbon dioxide spraying device that is provided in a pipe that is suspended and towed from a ship in the sea, and sprays liquid carbon dioxide supplied from the ship through the pipe,
For the pipe, provided to be swingable around a horizontal axis perpendicular to the towing direction ,
A nozzle that is supplied with the liquid carbon dioxide from the pipe and discharges the liquid carbon dioxide;
Provided between the pipe and the nozzle;
A manifold connecting the pipe and the nozzle, a check valve, and a relief valve;
The apparatus main body is a carbon dioxide spraying apparatus characterized in that the piping, the connection structure, and the piping equipment are provided in a central portion in the towing direction . A carbon dioxide spraying device that is provided in a pipe that is suspended and towed from a ship in the sea, and sprays liquid carbon dioxide supplied from the ship through the pipe,
For the pipe, provided to be swingable around a horizontal axis perpendicular to the towing direction ,
A nozzle that is supplied with the liquid carbon dioxide from the pipe and discharges the liquid carbon dioxide;
The apparatus main body for accommodating piping equipment provided between the piping and the nozzle;
It has a manifold provided to be swingable about a horizontal axis perpendicular to the towing direction with respect to the pipe,
A carbon dioxide spraying device , wherein a plurality of the device main bodies are provided in parallel to the manifold . 3. The dioxide dioxide according to claim 2, wherein the manifold itself is streamlined with respect to the towing direction, or the manifold is provided with a fairing that is streamlined with respect to the towing direction. Carbon spraying device.

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