JP3132897B2 - Ice transport method for cold heat transport device and PI tank thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention transfers ice or water cooled by ice to a remote area, and uses the cold heat for cooling.
Alternatively, the present invention relates to a multipurpose cold and hot transport apparatus for directly using cold water or the like.

[0002]

2. Description of the Related Art Ice provided for cooling or chilled water demand in remote areas by a cold transport apparatus is transported over long distances by long conduits.

In this case, the state of the ice in this case is generally such that ice is made into a slurry or a harvest, and the ice is made to flow into a transport pipe together with transport water by a transport pump. The pumped ice is then supplied to local demands for cooling and other heat exchange media. Note that the slurry state is a state in which a so-called sherbet is fluidized, in which microscopically irregular (and thus irregular) ice pieces are randomly and continuously collected. And ice chips of irregular size.

[0004] The ice transported to a remote place is once stored in a tank called a PI tank, and then supplied to the demand destination by a supply means, such as a pump, together with the transport water.

FIG. 12 is a longitudinal sectional view of a conventional PI tank, 5 is a PI tank, 13 is carrier water, and 21 is a PI (PLUG IC).
E: plug ice). Here, the conventional PI means ice including solid ice, columnar ice, and the like. Even if the columnar ice defined in claims 1 and 2 stays in the conventional PI tank for a long time, it is bridged. In the sense of having concerns about occurrence,
In the PI tank of claim 3, it is regarded as conventional ice. In the figure, for simplicity, a plurality of rectangles are shown. The figure shows that the PIs 21 floating on the transport water 13 during the long-term storage in the PI tank 5 freeze each other,
This is a state in which a bridge phenomenon called a bridge occurs, and after that, even if the transport water 13 is supplied to a demand destination and the water level decreases, it cannot follow the level. This state causes a problem for the cold transport device as described later.

[0006]

The above-mentioned conventional cold transport apparatus has the following problems to be solved.

That is, in the conventional apparatus, since the slurry ice and the harvest ice have a sherbet shape, the ice ratio (ice / water) is lowered, that is, the flow rate is increased by increasing the amount of water. There was a problem that it became large.

[0008] In addition, since the slurry has a large particle size because it is left behind and aggregates on the upper surface of the tube, a bridge is formed at the upper portion of the tube, and the water flows in the lower portion of the tube, and the bridge grows one after another. There is a problem that blockage occurs.

In order to increase the ice ratio, an additive such as a fluidity improver is required, and there is a problem in terms of quality of cold water, cost and the like.

Further, since the conventional PI tank is merely a container, its contents are separated into a PI layer and a transport water layer by the difference in density between ice and water, so that the PI layer is closed (bridge).
As the blockage progresses, as shown in FIG. 12, the closed PI 21 adheres to the inner wall of the PI tank 5 to form a gap K with the 13 layers of the transport water, or at the top of the PI tank 5,
There has been a problem that the PI tank 5 is clogged and a subsequent PI that has been conveyed cannot be put into the tank.

An object of the present invention is to provide an ice transport method that does not generate a bridge in a transport pipe and a PI tank that does not generate a bridge during storage of ice in order to solve the above problems.

[0012]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problems by providing the following method (1) to (3) for transporting ice of a cold heat transport apparatus and its PI tank. . (1). An ice transport method for a cold transport apparatus, wherein the ice is cylindrically solid ice and transported together with transport water to a remote PI tank by transport means in a cold transport apparatus with remote transport of ice. . (2). The ice transport method of the cold transport apparatus according to the above (1), wherein the ice shape is any one of a simple cylinder type, a conical head at both ends, a small cylinder at both ends, and a triangular marit head.

[Note] In the present invention, the term "simple columnar type" refers to the shape shown in FIG. 2 in the front view, and the term "conical head at both ends" refers to the shape shown in FIG. The "small columnar type" has a front view as shown in FIG. 4, and the "triangular mitt head type" has a front view as shown in FIG.
The present invention also includes a double-sided mitt head).
And the side view shows the shape shown in FIG.5 (b), respectively. (3). The ice transport method of the cold heat transport device according to the above (1)
Wherein the PI tank is provided with a perforated container having an upper surface opened substantially horizontally suspended by a plurality of weight balance springs and having a plurality of holes on the bottom surface and side surfaces. PI tank for cold transport equipment.

In the present specification, solid ice, particularly cylindrical ice, is referred to as PI.

[0015]

The present invention is configured as described above and has the following effects.

(1). In the configuration of the above (1), since the ice shape is cylindrical solid ice, and the inside of the transport pipe is transported together with the transport water to the remote PI tank by the transport means, the columnar solid ice is, for example, When the cylinders are arranged in parallel in the axial direction, they come into contact with each other in a straight line, and there is no unevenness that hinders mutual displacement. Therefore, the movements of the ice pieces are always guaranteed, and they do not stick to each other. Also, there is no sticking to the tube wall or the like.

Similarly, when the cylindrical surface and the cylindrical end surface come into contact with each other, they are in line contact and do not adhere to each other. When the end surfaces of the cylinders are in contact with each other, there is no unevenness on the contact surfaces, and a water film is formed between both surfaces by the transport water, so that they do not adhere to each other.

Therefore, no ice bridge is formed in the transfer pipe or the like.

(2). In the configuration of the above (2), the shape of the ice in the configuration of the above (1) is any one of a simple columnar type, a conical head type at both ends, a small columnar type at both ends, and a triangular marit head type. Ice will always come into contact with any combination of line-to-line, line-to-line, line-to-line, line-to-point, surface-to-surface, surface-to-point, and point-to-point, as in the case of slurry or harvest. Therefore, there is no occurrence of a state in which the concave portion and the convex portion come into contact with each other to restrict the mutual movement.

As a result, the movement between the ices is always guaranteed,
They do not stick to each other. Therefore, no bridge of ice is formed in the transfer pipe or the like.

(3). In the configuration of the above (3), P
The I tank, since the upper surface is suspended substantially horizontally perforated container having a plurality of holes in the apertured bottom and side surfaces by weight balance spring, P in the ice transportation method for cold transport device of the above (1)
Carrier water flows in with ice (PI) from above using as I tank
Then, the ice (PI) that flows in with the carrier water is
The transport water stays in the lower part of the PI tank.

If this state continues, ice (P
I) increases and the weight increases. As a result, the perforated container sinks into the carrier water to a depth that balances the buoyancy and spring force, and the ice is constantly immersed in the carrier water and continues to cool the carrier water,
In addition, unlike a conventional case, a bridge does not form a gap with the water surface and does not hinder the subsequent inflow of ice.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First and second embodiments of the present invention will be described with reference to FIGS. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted unless necessary.

(First Embodiment) A method according to a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a system diagram of a cold heat transport apparatus according to the method of the first embodiment, and FIGS. 2 to 10 are schematic views showing various shapes of ice used in the method of the first embodiment.

In FIG. 1, reference numeral 1 denotes an ice making facility for producing ice (hereinafter referred to as PI) 20 to be conveyed to a PI tank 5 or the like, which will be described later, and 2 denotes a mixture of PI 20 supplied from the ice making facility 1 and carrier water. The transfer equipment for sending out to the transfer pipe 4, the transfer pump 3 for sending PI 20 together with the transfer water to the transfer pipe 4 in the transfer equipment 2, and the transfer pump 4 for transferring the PI 20 to the transfer pipe 4.
A transfer pipe for transferring to the I tank 5, a PI tank 5 for storing the PI 20, which is provided in a relatively remote place, and a transfer water 6 to the chilled water heat exchanger 7 of the cold heat demand destination, a PI 20, etc. A circulating pump for feeding the chilled water, a chilled water heat exchanger for cooling the refrigerant for cooling, for example, and a circulating pump 8 for returning the transported water or the like after the heat exchange to the transport equipment 2, From there, a return tank for returning the transport water as regulated water to the PI tank 5, a return pump 9 for returning excess transport water or the like in the PI tank 5 to the transport equipment 2, and a return tank 8. And a pipe communicating with the PI tank 5.

Next, the operation of the above configuration will be described.

The PI 20 produced as columnar solid ice by the ice making equipment 1 is pumped through the transfer pipe 4 by the transfer pump 3 of the transfer equipment 2 and stored in the PI tank 5.

In the PI tank 5, the PI layer A accumulates in the upper part and the transport water layer B accumulates in the lower part of the tank and becomes cold water.

When there is a demand in the area, the water is sent to the chilled water heat exchanger 7 of the demand destination by the circulating pump 6 to be used for cooling or the like, and then temporarily stored in the return tank 8. Then, it merges with the surplus cold water in the PI tank 5, is returned to the transport equipment 2 by the return pump 9, is circulated again as transport water, or becomes raw water of the PI 20. Part of the water is returned from the return tank 8 to the PI tank 5 through the pipe 10 and becomes the regulated water for the PI tank 5.

As described above, according to the present embodiment, the PI 20 to be transported to the PI tank 5 together with the transport water is cylindrical ice, so that the surface thereof has no irregularities and the shape is uniform. Therefore, for example, a phenomenon occurs in which a certain period of time elapses in a state where the other protrusions are caught in the recesses on the other side of the PIs 20 and the mutual displacement and movement are prevented, and finally the two stick together. There is an advantage that a large number of phenomena occur between a large number of parts, and a bridging phenomenon that occurs due to the end portion sticking to the wall surface of the transport pipe 4 or the like does not occur, and the transport pipe 4 or the like is not blocked by the PI 20.

The PI 20 has no irregularities on its surface.
In addition, since the particle sizes are uniform, for example, adjacent P
Since a large number of other irregularly shaped fine ice chips enter the gaps between the I20s, filling the gaps and finally fusing together to prevent mutual movement, the fluidity is very good. Also, there is an advantage that pumping, transportation and the like are performed smoothly. Further, for the same reason, there is an advantage that a bridge is not easily generated even in the PI tank 5.

Although the PI 20 is typically shown as a simple columnar example, the shape is not limited to a simple columnar shape, and any of the types shown in FIGS. Is also good.

That is, FIGS. 2 to 5 show cylindrical solid ice PI2.
2 is a diagram showing the shape of 0, 20 in FIG. 2 is a simple columnar type, 20a in FIG. 3 is a conical head at both ends, 20b in FIG.
And 20c of FIG. 5 is a one-sided maritt head type,
(A) is a front view, (b) is a right side view of (a). By adopting these shapes, even if the PIs 20 to 20c come into contact with each other, there will be no trouble such as a bridge for the above-mentioned reason.

6 to 10 show examples in which grooves are provided on the entire circumference of the cylindrical side surface of the PI 20. 20d is a square groove, 20e is a V-shaped groove, 20f is a straight groove of these grooves, and 20g is a straight groove. Are examples provided in an oblique manner. However, a slanted groove is more preferable than a straight groove because there is no concern that adjacent grooves mesh with each other. Adopting such a shape has the advantage that the adjacent portions are in point contact with each other, and the fixation of the ice pieces or the fixation to the tube wall or the like is further prevented. When 20g rotates as shown in the example of the arrow in the figure, it is spirally advanced in the axial direction, so that adhesion to other PIs is further prevented.

(Second Embodiment) A second embodiment according to the third aspect of the present invention will be described with reference to FIG.

FIG. 11 is a longitudinal sectional view of the PI tank according to the second embodiment. Reference numeral 4 denotes a transport pipe into which the transport water 13 and the PI 20 flow.
a is a PI tank, which is the first embodiment described with reference to FIG.
Used in place of PI tank 5 in FIG. 1 in the method
It is. 6a is a supply port for supplying the transport water 13 to the demand destination, 9a is a circulation port for returning excess transport water 13 to the transport equipment, 11 is open at the top, and has many holes in the side wall and the bottom plate. A porous container, which is suspended substantially horizontally by a plurality of weight balance springs 12 relatively upward in the PI tank 5a. 13 PI20 on the water surface
Is a weight balance spring that suspends the porous container 11 from the ceiling of the PI tank 5a in four directions so as to sink and sink to an appropriate depth not to deviate and deviate.

Next, the operation of the above configuration will be described.

The transport water 1 is supplied from the transport pipe 4 to the porous container 11.
The PI 20 conveyed together with the PI 3 is stored. When a gap is formed between the bottom of the porous container 11 and the water surface of the transport water 13, the porous container 11 descends by its own weight and the transport water 13
Immerse in

In this manner, the group of PIs 20 is always together with the porous container 11 in a form substantially corresponding to the water level of the transport water 13.
There is an advantage that no reaction occurs and no bridge occurs in the PI tank 5a.

A gap S is provided between the porous container 11 and the side wall of the PI tank 5a. When the porous container 11 is immersed in the carrier water 13, the gap S
No bridge occurs between the PI 20 and the PI tank 5a because 3 flows around.

[0042]

The present invention has the following effects because it is configured as described above.

That is, according to the first and second aspects, cold transport
In the ice transport method of the apparatus, since the ice to be transported is columnar solid ice, no bridge is generated. Also, since the ice ratio of water to ice can be increased, the amount of transported water may be small. Therefore, the transfer pump power may be small.

Further, ice has a lower density than water, and furthermore, is in contact with the upper part of the inside of the tube because of its cylindrical shape, and is conveyed while slightly melting the surface, so that it comes into contact with the metal surface (the inner wall of the tube). And the transport resistance is reduced.

In addition, sufficient fluidity can be maintained without using a fluidity improver as in the case of slurry ice.

According to the third aspect, the cold heat transport of the first aspect is provided .
When used for the ice transport method of the device , the porous container is suspended by a spring in the PI tank, and the PI is received by this. Therefore, the PI bridges with the inner wall of the PI tank to form a gap between the surface of the transport water and the PI tank. Disappears.

In addition, the problem that the conveyed PI is clogged because no bridge is formed and cannot be put into the PI tank is also solved. Therefore, the operation of the ice transport system is not hindered, and the cold transport device and the ice transport device are not hindered.
The reliability of the transmission method is improved.

[Brief description of the drawings]

FIG. 1 is a system diagram of a cold heat transport device according to a method of a first embodiment of the present invention,

FIG. 2 is a front view of a simple cylindrical PI used in the first embodiment,

FIG. 3 is a front view of a double-sided conical head type PI used in the first embodiment;

FIG. 4 is a front view of a small-column PI at both ends used in the first embodiment,

FIGS. 5A and 5B are views of a one-sided maritt head PI used in the first embodiment, where FIG. 5A is a front view, FIG. 5B is a right side view of FIG.

FIG. 6 is a side view of a surfaceless grooved PI used in the first embodiment;

FIG. 7 is a side view of a PI having a square groove used in the first embodiment,

FIG. 8 is a side view of a PI having a V-shaped groove used in the first embodiment.

FIG. 9 is a front view of a PI used in the first embodiment and having a straight groove in a cylindrical axis direction;

FIG. 10 is a front view of a PI having an oblique groove with respect to a cylindrical axis used in the first embodiment;

FIG. 11 is a longitudinal sectional view of a PI tank according to a second embodiment of the present invention;

FIG. 12 is a longitudinal sectional view of a conventional PI tank.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 ice making equipment 2 transfer equipment 3 transfer pump 4 transfer pipe 5,5a PI tank 6 circulation pump 6a supply port 7 cold water heat exchanger 8 return tank 9 return pump 9a circulation port 10 pipe 11 perforated container 12 weight balance spring 13 transfer water 20 ~ 20g PI

Claims (3)

(57) [Claims] 1. A cold transport apparatus for remotely transporting ice, wherein the ice is cylindrical solid ice and transported in a transport pipe together with transport water to a remote PI tank by transport means. How to transport the ice on the device. 2. The ice transport method according to claim 1, wherein the ice shape is any one of a simple columnar type, a conical head type at both ends, a small columnar shape at both ends, and a triangular malt head type. . 3. The method for transporting ice in a cold transport apparatus according to claim 1.
The PI tank to be used , comprising: a perforated container having an upper surface opened substantially horizontally suspended by a plurality of weight balance springs above the inside and having a plurality of holes on the bottom surface and side surfaces. PI tank of transportation equipment.