JP4908832B2 - Liquefied gas container heating / cooling device and gas supply device - Google Patents

Description

  The present invention relates to a device for heating or cooling a liquefied gas container filled with a liquefied gas with a heating medium or a refrigerant, and a gas supply device in which a liquefied gas container is placed.

  Gases typified by ammonia and hydrogen chloride are widely used in these manufacturing apparatuses (hereinafter referred to as gas using apparatuses) as process gases in semiconductor manufacturing and raw material gases for electronic devices. When supplying the gas to the gas using device, it is most common to prepare a general-purpose 47 L capacity gas cylinder for each gas using device and perform the supplying operation individually. However, in recent years, with an increase in the number of gas use devices installed in one factory, there is an increasing demand for bulk supply for supplying gas from a large gas container to a large number of gas use devices through piping.

  Gases such as ammonia and hydrogen chloride are filled in the gas container in a liquefied state at a high pressure of several MPaG to several tens of MPaG. In order to extract gas from a gas container (liquefied gas container) filled with such a high-pressure gas and efficiently supply it to the gas using device, a gas phase pressure of about 0.5 MPaG is generally required at the outlet of the liquefied gas container. It becomes.

When the gas filled in the liquefied gas container is taken out in the gas phase, the liquefied gas can be vaporized only by releasing the high filling pressure inside the container. Therefore, if the secondary side (downstream side) pressure of the pressure reducing valve provided at the outlet of the liquefied gas container is set to 0.5 MPaG, for example, the gas phase gas adjusted to such pressure can be taken out.
However, since the liquefied gas takes vaporization latent heat from the surroundings when vaporized, if the bulk supply by the gas phase is continuously performed, the temperature of the liquefied gas gradually decreases and the saturated vapor pressure decreases. When the saturated vapor pressure falls below a desired outlet pressure (for example, the above 0.5 MPaG), the gas phase gas cannot pass through the pressure reducing valve, and the gas supply to the gas using device is stopped.

  For this reason, when gas phase gas is supplied in bulk to a gas using device by a natural vaporization method that does not use forced heating means, the liquefied gas whose normal temperature is the initial state lowers its temperature and the saturated vapor pressure is reduced. The time required to reach a temperature (gas supply possible temperature) equal to the desired outlet pressure is short, and there is a problem that bulk supply can be performed only for such a short time. Further, once the bulk supply is stopped due to the temperature drop of the liquefied gas, there is a problem that the liquefied gas cannot be resumed until the temperature of the liquefied gas is recovered to a temperature higher than the gas supply possible temperature by the normal temperature atmosphere. Furthermore, if the outside air temperature falls below the temperature at which gas can be supplied, such as in winter, bulk supply with a desired outlet pressure cannot be performed in the first place.

In addition, in general, bulk supply is performed by extracting liquid phase gas from the liquefied gas container, evaporating it with an evaporator, and supplying it to the gas using device. In this case, the liquefied gas in the liquefied gas container is also used. It is preferable to supply while heating. This is because the liquefied gas is rapidly vaporized in the liquefied gas container so as to follow the decrease in the remaining amount of the liquefied gas, and if the gas phase pressure in the container is not maintained above a predetermined value, This is because the negative pressure prevents the smooth outflow of the liquid phase gas.
From the above, when gas is supplied in bulk from a liquefied gas container, regardless of whether the gas to be extracted is in the gas phase or in the liquid phase, the temperature is kept at a predetermined temperature in order to maintain the saturated vapor pressure of the liquefied gas inside the container. Or it needs to be heated.

  On the other hand, when there is a possibility that the liquefied gas is heated and rises to a predetermined temperature or more, it is desired to cool it efficiently. For example, when gas phase gas is liquefied under high pressure and filled into a liquefied gas container, the liquefied gas is heated by adiabatic compression and generation of cohesive heat. In addition, when bulk supply is performed in summer when the outside air temperature is high, it is required to cool the liquefied gas to a predetermined temperature for safety.

  Conventionally, in order to cope with these problems, for example, a heater such as a pipe through which hot water or hot air circulates or a ribbon heater is brought into contact with the outer surface of the liquefied gas container to heat the liquefied gas inside the container. There have been used a method, a heating method in which a liquefied gas container is immersed in a hot water tank and heating it, or a cooling method in which these are performed with cold water or cold air.

  For example, Patent Document 1 below describes an invention of a hot water jacket that covers the outer peripheral surface of a liquid cylinder (liquefied gas container). Non-Patent Document 1 below describes that a metal plate provided with a press groove for circulating hot water (cold water) is formed into a half-cylindrical shape, and the placed liquefied gas container is heated (cooled). An invention of a heat exchanger that can be described is described.

JP-A-8-228594 Transter PHE Inc. "PLATECOIL", [online], [searched on November 29, 2005], Internet <URL: http://us.tranterphe.com/phe/platecoil/platecoil.htm>

  However, the hot water jacket described in Patent Document 1 requires a large number of work steps for attaching to and detaching from the liquid cylinder. Usually, there are many minute irregularities on the surface of the liquid cylinder, and it is difficult to sufficiently bring the liquid cylinder and the hot water jacket into close contact with only the restraining force of the locking member of the hot water jacket. There is a problem that the heat transfer efficiency is lowered by the air layer interposed therebetween, and the heating efficiency by the hot water is insufficient. On the other hand, the heat exchanger described in Non-Patent Document 1 can perform the heat exchange operation simply by placing the liquefied gas container on the half-divided cylindrical metal plate, and can easily attach and detach the liquefied gas container. There is an advantage of being.

However, in such a heat exchanger, the half-cylindrical shape of the metal plate on which the liquefied gas container is placed is fixed, so that the curve (curvature) of the metal plate at normal temperature and the shape of the outer peripheral surface of the liquefied gas container are Even if they are molded with the same precision, if the outside air temperature changes or the liquefied gas cools, both of them will undergo thermal deformation with their own thermal expansion coefficient and change the curvature. There is a problem that it is difficult to maintain the sex.
Also, even in the case of liquefied gas containers of the same standard, the curvature of the outer shape is slightly different for each manufacturer, so a metal plate that suits one product may not necessarily fit another product. The heat exchanger is inferior in versatility. Furthermore, even in the case of liquefied gas containers of the same specification, the curvature and the shape of the unevenness are always accompanied by a predetermined variation due to manufacturing errors. Therefore, in the above heat exchanger, a constant heat exchange efficiency is not always obtained. Therefore, when continuously supplying a bulk while replacing a plurality of liquefied gas containers, there may be a problem that a predetermined heating efficiency cannot be obtained for any of the liquefied gas containers.

  In order to solve such a problem, conventionally, an attempt has been made to attach the heat exchange metal plate and the outer peripheral surface of the liquefied gas container with heat transfer cement to improve the contact between them. When the liquefied gas container is detached, it is necessary to remove or re-apply the heat transfer cement, and a new problem has arisen that such work requires a considerable cost and the number of steps.

  In recent years, it has not been recognized in Japan by the High Pressure Gas Safety Law that an electric heater is brought into direct contact with the outer peripheral surface of a liquefied gas container to heat it. In addition, the conventional method of immersing the liquefied gas container in the hot water tank requires an enormous amount of hot water to be supplied, which requires a lot of energy costs, and there is a possibility that the liquefied gas container which is generally made of metal may be corroded. Have a problem.

  Based on the above, in the present invention, a heating / cooling device having high heat exchange efficiency with a mounted liquefied gas container, versatility, and easy replacement of the liquefied gas container, and bulk of liquefied gas over a long period of time It aims at providing the gas supply apparatus which enables supply.

The heating and cooling device according to the present invention is:
( 1 ) A heating / cooling device for heating or cooling a horizontally placed liquefied gas container having a circular cross section filled with liquefied gas, wherein a plurality of rigid pipes through which a heat exchange medium flows are arranged in the longitudinal direction. A pipe bundle that is joined to flexible binding bands provided in a direction crossing each other and the mounting surface of the liquefied gas container is formed in a concave shape, and a gantry that suspends both ends of the binding band of the pipe bundle , A heating and cooling device for a liquefied gas container,
( 2 ) The heating and cooling device according to (1), wherein the pipe bundle and the mount are connected by an elastic body;
( 3 ) The heating / cooling device according to (1) or (2) above, wherein the cross-sectional shape of the pipe is an ellipse, an oval, or an arcuate shape;
( 4 ) The heating and cooling device according to any one of (1) to ( 3 ), wherein the pipe bundle is provided with a heat conductive filler on a mounting surface of the liquefied gas container;
Is the gist.

Moreover, the gas supply device according to the present invention includes:
( 5 ) A gas supply device in which a liquefied gas container filled with a liquefied gas is placed on a pipe bundle of the heating / cooling device according to any one of (1) to ( 4 ) above;
(6) A gas supply device comprising a heat exchange medium supply means for supplying water at 0 ° C. to 40 ° C. to the piping of the heating / cooling device according to any one of (1) to ( 4 );
(7) A gas supply device according to the above ( 5 ), characterized in that it includes a pressing means for pressing the pipe bundle against the liquefied gas container.

In the heating / cooling device according to the present invention, the flexible pipe bundle has a concave mounting surface , so that it conforms to the outer shape of the horizontally placed liquefied gas container having a circular cross section mounted thereon. A mounting surface can change a shape flexibly and can obtain high contact property with this container. For this reason, the heat exchange efficiency between the heat exchange medium flowing in the pipe bundle and the liquefied gas container is extremely high.

Further, because of the flexibility of the mounting surface, even when the external dimensions of the liquefied gas containers to be mounted can be individually absorbed, high versatility can be obtained. For the same reason, even when a pipe bundle or a liquefied gas container is thermally deformed during bulk supply, high contactability can be maintained. Moreover, such good contact properties because of the pipe bundle and liquefied gas container, becomes unnecessary both paste by heat transfer cement, also starts heating or cooling operations by simply placing the liquefied gas container placed face Therefore, there is an advantage that the replacement operation of the liquefied gas container is easy.

  In addition, according to the gas supply apparatus in which the liquefied gas container is placed on the bundle of pipes of the heating and cooling apparatus according to the present invention, the liquefied gas can be maintained at a predetermined temperature and saturated vapor pressure. A continuous bulk supply of gas is possible. Moreover, since the mounting operation is completed simply by placing the liquefied gas container on the pipe bundle, the operation cost required to replace the container can be reduced. Furthermore, this invention which distribute | circulates a heat exchange medium only inside the piping is excellent in energy cost.

  Hereinafter, the best mode for carrying out the present invention will be specifically described with reference to the drawings. 1A and 1B are three views of a heating and cooling apparatus according to the present invention, in which FIG. 1A is a plan view, FIG. 1B is a front view, and FIG. 1C is a side view. 10 is a heating / cooling device, 12 is a pedestal, 14 is a pipe bundle, 16 is a suspended portion, 20 is a pipe, 22 is a binding band, and 24 is a spring. 26a is a heat exchange medium supply port for introducing the heat exchange medium into the heating and cooling device 10, 26b is a heat exchange medium discharge port for discharging the heat exchange medium from the heating and cooling device 10, and 28 is the liquefied gas container 30 for the pipe bundle 14. It is a band for tightening.

  The heating / cooling device 10 according to the present embodiment performs heat exchange between a heat exchange medium that circulates inside the pipe 20 and a liquefied gas container that is mounted.

  As the heat exchange medium, a gas phase medium such as hot air, hot air, or cold air, or a liquid phase medium such as hot water, hot water, hot oil, cold water, or antifreeze can be used. The heat exchange medium is supplied to the pipe 20 from the heat exchange medium supply port 26a, and the heat exchange medium subjected to heat exchange with the liquefied gas container is provided outside the heating / cooling device 10 through the heat exchange medium discharge port 26b. Discharged.

The liquefied gas container 30 heated or cooled by the heating / cooling device 10 is of a horizontal type having a circular cross section .
The material of the liquefied gas container 30 is preferably a metal having excellent thermal conductivity, strength, and pressure resistance, and stainless steel (SUS) or manganese steel is particularly preferable. The liquefied gas to be filled is not particularly limited as long as it is a gas such as ammonia, hydrogen chloride, chlorine, nitrous oxide, etc., and is present as a liquid inside the high-pressure liquefied gas container 30.

In the heating / cooling device 10 according to the present invention, a plurality of rigid pipes 20 (excluding connecting portions) for circulating a heat exchange medium are connected in the width direction to form a mounting surface for the liquefied gas container 30. And a flexible pipe bundle 14.
In the pipe bundle 14, for example, the following two systems can be adopted as a mode for circulating the heat exchange medium through the pipe 20.
(1) The heat exchange medium introduced into the heating / cooling device 10 from the heat exchange medium supply port 26 a is distributed and supplied to a plurality of pipes 20 provided in parallel, and heat is exchanged with the liquefied gas container 30. A method in which after being used for replacement, it is integrated again and discharged to the outside of the heating / cooling device 10 through the heat exchange medium discharge port 26b. That is, in the case of such a system, in the heating / cooling device 10 shown in FIG. 1A, the direction in which the heat exchange medium flows in each pipe is the same.
(2) The ends of the adjacent pipes 20 are connected to each other by a flexible tube so that the flow path of the heat exchange medium is connected in series, and the inlet of the serial flow path is heated from the heat exchange medium supply port 26a. A method of supplying a heat exchange medium introduced into the cooling device 10. In this case, the outlet of the serial channel and the heat exchange medium discharge port 26b are connected to discharge the heat exchange medium subjected to heat exchange. That is, in the case of such a system, in the heating and cooling device 10 shown in FIG. 1A, the direction in which the heat exchange medium circulates in each pipe is alternated, and the supplied heat exchange medium is all pipes. Pass through. In such a method, the ends are connected to each other by the flexible tube so that the flexibility of the pipe bundle 14 is not hindered by the rigidity of the pipe 20 having the ends connected to each other. preferable.
In addition, you may form the flow path inside the pipe bundle 14 in the aspect which combined the method of said (1) and (2).

  The plurality of pipes 20 constituting the pipe bundle 14 are not limited to those having the same shape, the same diameter, the same length, and the same material, and any one or more of these may be different. The material of the pipe 20 is preferably a metal material such as SUS or aluminum alloy from the viewpoint of thermal conductivity, strength, workability, and the like. A suitable cross-sectional shape of the pipe 20 will be described later.

As a method of connecting a plurality of pipes 20 in the width direction to obtain a flexible planar pipe bundle 14, in the present embodiment shown in FIG. A mode in which they are connected and integrated with three flexible binding bands 22 provided in parallel with each other will be exemplified.
The pipe bundle 14 connected in the width direction by the binding band 22 is suspended in a concave shape as a whole by fixing both ends of the binding band 22 to the opposite hanging portions 16 of the gantry 12. In this state, the pipe bundle 14 has flexibility in the vertical direction. The suspension portion 16 is provided at three locations on one side along the longitudinal direction of the gantry 12 in order to hold both ends of the three binding bands 22.
In addition, about the longitudinal direction and the width direction of the heating-cooling apparatus 10, it shows with the arrow in a figure.

  When the liquefied gas container 30 filled with the liquefied gas is placed on the pipe bundle 14, the binding band 22 easily bends and deforms due to the weight, and changes the angle at which the adjacent pipes 20 are connected to each other. Can do. The specific material, dimensions, Young's modulus, and the like of the binding band 22 can be appropriately selected depending on the standard of the liquefied gas container 30 to be placed, the filling amount of the liquefied gas, and the like, but metal materials such as SUS, carbon fiber reinforced plastic, etc. A thin plate made of the above resin material is preferably used. Since the binding band 22 is a thin single plate, it has low bending rigidity and has a predetermined flexibility in the bending direction. For this reason, when the pipe bundle 14 is obtained by joining a plurality of pipes to the binding band 22 provided in a direction crossing the longitudinal direction, the pipe 20 itself has high rigidity but the width of the pipe bundle 14 is Good flexibility in the direction of bending along the direction. In particular, the flexible pipe bundle 14 can be suitably obtained by arranging the pipes 20 parallel to each other at a predetermined interval and joining the pipes 20 to the binding bands 22 provided perpendicular to the longitudinal direction. In addition, since the binding band 22 needs to hold | maintain the weight of the liquefied gas container 30 mounted, it has sufficient intensity | strength in the tension | pulling direction. Therefore, the binding band 22 is preferably a thin plate having a predetermined cross-sectional area and a shape having a small cross-sectional second moment in order to obtain flexibility.

However,
1) A method of tightly binding pipes with a string-like member;
2) A system in which piping is embedded inside a plate made of a flexible material such as resin;
3) A method of connecting by a hinge mechanism that can flexibly change the angle between pipes;
A method of obtaining a flexible pipe bundle by connecting a plurality of pipes to each other in the width direction of the pipe is not limited to the present embodiment shown in FIG. It is preferable that the pipes are connected with their longitudinal directions aligned in substantially the same direction .

  In order to improve the fit between the liquefied gas container 30 and the pipe bundle 14, bands 28 may be provided at both ends in the longitudinal direction of the heating / cooling device 10 as pressing means for fastening the pipe bundle 14.

Next, functions and effects of the pipe bundle 14 according to the present invention will be described with reference to a schematic cross-sectional view shown in FIG. 2A is a vertical sectional view showing the state of the pipe bundle 14 before the liquefied gas container 30 is placed, and FIG. 2B shows the pipe bundle 14 with the liquefied gas container 30 placed thereon. It is a vertical sectional view. The binding band 22 is not shown.
In the pipe bundle 14, a plurality of pipes 20 are connected to each other in the width direction to form a flexible curled surface. The upper surface of the pipe bundle 14 serves as a mounting surface 32 for the liquefied gas container 30. The pipe bundle 14 has low bending rigidity in the vertical vertical direction shown in FIG. 2 (the direction of bending along the width direction of the pipe bundle 14), and adjacent pipes 20 can change the connection angle within a predetermined range.

  The pipe bundle 14 is held by the hanging portion 16 of the gantry 12 via springs 24 at both ends in the width direction. The pipe bundle 14 pulled on both sides by the spring 24 and suspended from the mount 12 has a shape that hangs in a curved shape from both ends in the width direction toward the center, and the center is suspended in the air.

  In the initial state shown in FIG. 2A, the pipe bundle 14 is bent in a concave shape with a larger radius of curvature than the outer peripheral surface of the liquefied gas container 30 so that the liquefied gas container 30 can be easily set. It is open with an open mouth.

  FIG. 2B shows a state in which the liquefied gas container 30 is lowered from this state in the direction of the arrow in the figure and placed on the pipe bundle 14. The own weight (indicated by the downward arrow G) of the liquefied gas container 30 filled with liquefied gas is as large as 2 [t] depending on the container specifications. Since the pipe bundle 14 has flexibility in a direction in which the mounting surface 32 bends out of the plane along the width direction thereof, the pipe bundle 14 is strongly pulled by the own weight of the liquefied gas container 30, thereby Like a hammock, it wraps around the liquefied gas container 30 and deforms so as to wrap it. Specifically, the pipe bundle 14 bends in accordance with the connection angle between the pipes 20 in accordance with the tangential angle of the outer peripheral surface of the liquefied gas container 30, and the mounting surface 32 and the liquefied gas container 30 fit well. As a result, the pipe bundle 14 that is largely open upward in the initial state (FIG. 2A) is deformed so that the mouth is squeezed according to the diameter of the liquefied gas container 30. When the liquefied gas container 30 is placed on the pipe bundle 14, the vertical bundle force indicated by the arrow N in the figure is generated from the pipe bundle 14 to the liquefied gas container 30, thereby causing the liquefied gas container. The self weight of 30 (arrow G) is offset. Due to the good fit between the pipe bundle 14 and the liquefied gas container 30, the vertical drag is not concentrated only on the pipe located at the center of the pipe bundle 14, but is distributed along the outer peripheral direction of the liquefied gas container 30.

  In addition, springs 24 are provided at both ends in the width direction of the pipe bundle 14. When the liquefied gas container 30 is placed by suspending the pipe bundle 14 from the suspending portion 16 of the gantry 12 through an elastic body represented by the spring 24, the elastic body expands and the pipe bundle 14 and the liquefied gas are expanded. The fit with the container 30 can be improved. This is due to the following reason.

That is, assuming that the pipe bundle 14 is rigidly coupled to the hanging portion 16, the angle and position of the pipe 20 located at both ends in the width direction of the pipe bundle 14 are fixed, so that the shape of the outer peripheral surface of the liquefied gas container 30 is met. The deformation of the pipe bundle 14 is suppressed. On the other hand, as shown by the arrow K in the figure, the angle and position of the pipe 20 located at the end can be changed by interposing an elastic body at the end as in the pipe bundle 14 according to the present embodiment. Can be changed. As a result, the entire pipe bundle 14 rotates and moves, and the pipe bundle 14 is drawn along the outer peripheral surface of the liquefied gas container 30 and flexibly deformed to fit therewith.
That is, when the pipe bundle 14 is rigidly coupled to the hanging portion 16, the deformation of the pipe bundle 14 trying to fit the outer peripheral surface of the liquefied gas container 30 is performed by the flexibility of the pipe bundle 14 itself. In the case of the present embodiment in which the pipe bundle 14 is connected to the suspension portion 16 via an elastic body, the liquefied gas container 30 can be deformed by rotation and movement of the pipe bundle 14 and its own flexibility. The fitting property with respect to the outer peripheral surface is further improved.

In addition, although an elastic body can be provided in the width direction of the pipe bundle 14 at both ends in the width direction, the left and right balance in the width direction can be satisfactorily achieved, but the elastic body can also be provided in only one of them. Further, as to the direction in which the elastic body is elastically deformed, as shown in FIG. 2, in addition to a system that can deform both in the vertical direction and the width direction of the gantry 12, only one of them may be possible.
When the end of the pipe bundle 14 is rotatably connected to an elastic body that can be deformed in the vertical direction of the gantry 12, the pipe bundle 14 promotes deformation of bending along the outer peripheral surface of the liquefied gas container 30, and liquefied gas. The impact load at the moment when the container 30 is placed on the pipe bundle 14 can be absorbed.
If an elastic body that can be deformed in the width direction of the gantry 12 is provided, the flexibility of the elastic body is added to the flexibility of the pipe bundle 14 when the pipe bundle 14 is pushed downward by the liquefied gas container 30. Thus, it is more preferable that the pipe bundle 14 is wound around the outer peripheral surface of the liquefied gas container 30 to be deformed.

  Moreover, what is necessary is just to pull up the liquefied gas container 30 upward, when removing the liquefied gas container 30 from the heating-cooling apparatus 10. FIG. When the load of the load by the liquefied gas container 30 is removed, the pipe bundle 14 wound around in a curled shape is pulled at both ends by springs 24 and immediately opened in the width direction (FIG. 2). Return to (a)). For this reason, the pipe 30 and the liquefied gas container 30 can be easily detached without interfering with each other.

  As shown in FIG. 2, the heating and cooling device 10 according to the present embodiment allows the pipe bundle 14 and the liquefied gas container 30 to contact each other over a rotation angle of about 180 degrees corresponding to the 3 o'clock to 9 o'clock position. is there. In general, the liquefied gas may be filled up to about 85% of the internal volume of the liquefied gas container 30, and the liquid level of the liquefied gas in this case exceeds the region where the pipe bundle 14 contacts and performs heat exchange. It becomes. However, when the amount of liquefied gas is large, the heat capacity of the liquefied gas is proportionally larger.For example, even if the liquefied gas is cooled by the bulk supply of liquefied gas, the temperature change is slow. It is. Therefore, in such a case, the temperature of the entire liquefied gas can be maintained by heating the liquefied gas container 30 only from below with the heating / cooling device 10, and the saturated vapor pressure of the liquefied gas can be prevented from becoming below a predetermined value. Can do. On the contrary, the same applies to the case where the liquefied gas may be overheated by a high outside air temperature. When the amount of liquefied gas is sufficient, this can be prevented by cooling only from below the liquefied gas container 30. Can do.

On the other hand, when the filling amount of the liquefied gas is reduced, the heat capacity becomes small and the temperature fluctuation becomes abrupt. Therefore, it is necessary to quickly perform heating or cooling by the heating and cooling device 10 following the temperature fluctuation. Generally, when the filling amount becomes about 10 to 30%, the bulk supply becomes the most critical. However, also in this case, since the amount of liquefied gas filling is small, the height of the liquid level is lower than the center of the liquefied gas container 30, and the entire area of the liquefied gas is obtained by the pipe bundle 14 shown in FIGS. It is fully covered.
When the amount of the filled liquefied gas is reduced, the liquefied gas container 30 placed on the pipe bundle 14 is pulled up by the spring 24 because the total weight is reduced, so that the pipe bundle 14 is gradually lifted. The area covering 30 becomes narrower. However, since the container weight of the liquefied gas container 30 is generally the same as the filling amount of the liquefied gas, even if the liquefied gas is empty, the liquefied gas container 30 is sufficiently submerged in the pipe bundle 14, In the critical state, the contact width between the pipe bundle 14 and the liquefied gas container 30 is not sufficient, so that the heat exchange efficiency does not decrease.
In addition, in order to further improve the heat exchange efficiency by the heating / cooling device 10 according to the present invention, the upper half of the liquefied gas container 30 may be heated or cooled. Specific examples of such means will be described later.

  FIG. 3 is a conceptual diagram of a gas supply device 50 in which a liquefied gas container 30 is placed on the heating / cooling device 10 shown in a partially cutaway view. The gas supply apparatus 50 according to the present invention includes a heating / cooling apparatus 10 having a flexible pipe bundle and a gantry for suspending the flexible pipe bundle, and a liquefied gas container 30. Further, the gas supply device 50 may include a liquefied gas lead-out line, a heat exchange medium supply means, and a control device therefor.

  Inside the gantry 12, a pipe bundle 14, in which a plurality of pipes 20 are connected in the width direction via a tie band 22, is provided by a suspension 16 provided at three locations on one side along the longitudinal direction of the gantry 12. It is suspended and forms a half cylinder. A liquefied gas container 30 laid sideways is placed on the pipe bundle 14, and the upper part is covered with a heat insulating cover 34. The heat insulating cover 34 is a covering member that blocks heat from entering and exiting the liquefied gas container 30 and increases the heat retaining or cooling efficiency.

  From the liquefied gas container 30, a gas phase gas outlet line 80 and a liquid phase gas outlet line 82 extend, respectively, and supply the liquefied gas to the same or different gas use devices (not shown). The gas-phase gas lead-out line 80 is provided with a pressure reducing valve 84, and the liquid-phase gas lead-out line 82 is provided with a constant flow valve 86 so that the liquefied gas can be controlled to a predetermined pressure and flow rate.

  In the gas supply device 50, bands 28 are provided at both ends in the longitudinal direction of the gantry 12, and the pipe bundle 14 is fastened to the liquefied gas container 30 to enhance the contact between them. As long as the band 28 does not interfere with the suspended portion 16, the number and tightening position of the band 28 are not limited to the embodiment shown in the figure. For example, three or more bands 28 may be used and the heat retaining cover 34 may be pressed. . Further, the function of the band 28 can be provided by adopting a method in which the heat retaining cover 34 is applied around the liquefied gas container 30 with a predetermined tension.

  As an example of the heat exchange medium and heat exchange medium supply means supplied to the pipe 20, FIG. 3 shows a hot water 62 heated by a heater 64 and a hot water tank 60 that circulates and supplies this. The hot water 62 stored in the hot water tank 60 is driven by a pump 66 and introduced into the heat exchange medium supply port 26a (see FIG. 1) of the gantry 12 through the medium circulation pipe 68. The hot water 62 subjected to the heat exchange is discharged to the medium circulation pipe 68 from the heat exchange medium discharge port 26b (see FIG. 1) and returned to the hot water tank 60. The hot water tank 60 is heated to a predetermined temperature by a heater 64 and is supplied again to the pipe 20 as a heat exchange medium. The temperature of the hot water 62 and the speed of the hot water supplied to the pipe 20 are controlled by the control panel 70. By adopting such a circulation method, the temperature of the heat exchange medium can be finely controlled, and the amount of the hot water 62 to be circulated can be reduced, and the energy cost can be reduced.

  The temperature of the hot water 62 is preferably 0 ° C. to 40 ° C. In particular, water at 35 ° C. to 40 ° C. is suitable as a heat medium when supplying a liquefied gas such as ammonia in bulk. In addition, use of water at 0 ° C. to 20 ° C. is suitable as a refrigerant for cooling the liquefied gas.

  According to the gas supply device 50 of the present invention, high heat exchange efficiency can be obtained due to good contact between the pipe bundle 14 and the liquefied gas container 30. For this reason, temperature compensation of the liquefied gas, which is gradually cooled by being deprived of vaporization latent heat during the bulk supply to the gas using apparatus, is performed quickly and efficiently, and the bulk supply over a long time is realized.

  Other modes for carrying out the heating / cooling device 10 and the gas supply device 50 according to the present invention will be described below.

  The shape of the cross section (transverse cross section) obtained by cutting the pipe 20 that circulates the heat exchange medium in the width direction may be a general circle, a rectangle, or other shapes.

  FIG. 4 is an example of a suitable cross-sectional shape of the pipe 20, wherein FIG. 4A is a circle, FIG. 4B is an ellipse, FIG. 4C is an oval, and FIG. In the case of a circle, it is excellent in the availability of piping and scooping in the heating / cooling device 10. The oval shape and the oval shape have better contact with the liquefied gas container 30 than the circular shape, and the same heat exchange efficiency can be obtained with a smaller number of pipes than the circular cross section. In the case of an arcuate shape, by setting the concave surface side as the mounting surface 32 of the liquefied gas container 30, high contactability with the container and heat exchange efficiency can be obtained. The curvature of the concave surface may be matched with the curvature of the outer peripheral surface of the liquefied gas container 30 to be placed.

FIG. 5 is a partial enlarged view of a cross section obtained by cutting the pipe bundle 14 in the width direction. A pipe 20 having an arcuate cross section is joined side by side with a predetermined interval on the upper surface of a binding band 22 made of a thin metal plate. A gel-like thermally conductive filler 36 is provided on the upper surface of the pipe bundle 14.
The thermally conductive filler 36 can be crushed and deformed by its own weight of the liquefied gas container 30 placed on the pipe bundle 14 to fill a minute gap with the pipe 20.
Thereby, the favorable contact property of the flexible pipe bundle 14 concerning this invention and the liquefied gas container 30 is further improved, and the heat exchange efficiency by a heat exchange medium can be improved.
The thermally conductive filler 36 can be widely used as long as it is a gel material having high thermal conductivity. For example, a rubber material such as silicone rubber or fluororubber, or a resin material containing a heat conductive material such as metal is used in a sheet form. It can be used after being molded. Moreover, it is preferable not to melt | dissolve with the heat of about 40 degreeC warm water generally used as a heat medium.
Also, by using the rubber material as the heat conductive filler 36 and making it detachable, it is different from the conventional method of fixing the heat exchanger and the liquefied gas container with heat transfer cement. The high heat exchange performance of the heating and cooling device 10 according to the present invention can be enjoyed without impairing the easy replacement workability of the liquefied gas container 30.

In addition to the linear spring illustrated in FIG. 2, a torsion spring, a leaf spring, or the like can be used as the elastic body that couples the pipe bundle 14 and the gantry 12. Further, the elastic body can be provided inside the pipe bundle 14 in addition to the aspect provided between the pipe bundle 14 and the suspended portion 16 as schematically shown in FIG. That is, in the pipe bundle 14 in which the pipes 20 aligned in the longitudinal direction are joined to the flexible binding band 22 in the width direction, the entire binding band 22 is formed from a resin material having a low tensile rigidity. The bending rigidity in the out-of-plane direction in which the connection angle between the pipes can be changed and the tensile rigidity in the in-plane direction in which the interval between the pipes 20 can be extended can be made low. The effect of fitting to the outer peripheral surface of the container 30 is obtained.
In addition, in the binding band 22, by providing a portion having a low tensile rigidity in a stripe shape between the adjacent pipes 20, the interval and the connection angle between the pipes 20 can be changed, and the same effect can be obtained.

In the present invention, it is also preferable that the elastic modulus of the elastic body is adjustable. Thereby, a suitable elastic modulus can be selected according to the standard of the liquefied gas container 30 placed on the pipe bundle 14 and the mass of the liquefied gas to be filled. For example, when the large liquefied gas container 30 is placed, the elastic modulus is set to a predetermined value so that the tensile deformation amount of the elastic body does not become too large, and when the small liquefied gas container 30 is placed, the pipe bundle 14 In order to promote flexible deformation, it is preferable to reduce the elastic modulus.
Further, the elastic modulus of the elastic body may be dynamically adjustable during the bulk supply of the liquefied gas. In this case, the mounting weight (see arrow G in FIG. 2) that gradually decreases as the filling amount of the liquefied gas decreases is measured with a load cell or the like, and the fitting property between the pipe bundle 14 and the liquefied gas container 30 is always optimal. The elastic modulus can be controlled to be

  In the present invention, the position of the suspending portion 16 that suspends the pipe bundle 14 may be movable in the vertical vertical direction or the width direction of the gantry 12. For example, when the liquefied gas container 30 having a large diameter is placed on the pipe bundle 14, the interval between the suspending portions 16 facing each other in the width direction of the gantry 12 is increased, and the position of the suspending portion 16 is increased. When a small liquefied gas container 30 is placed, the heating / cooling device 10 can cope with a plurality of standards of the liquefied gas container 30 by reducing the interval between the suspended portions 16 and lowering the position of the suspended portion 16. Thus, the versatility is improved.

  Further, in the heating and cooling apparatus 10 according to the present invention, the upper pipe bundle 38 that covers the upper portion of the liquefied gas container 30 to be placed is used in place of or in combination with the heat insulating cover 34 (see FIG. 3). It may be provided.

FIG. 6 is a schematic diagram showing a specific example of the upper pipe bundle 38. A liquefied gas container 30 is placed on the pipe bundle 14 whose both ends are held by the hanging portion 16. A pair of upper pipe bundles 38 are rotatably connected to the pipe bundle 14 via a hinge mechanism (not shown). The upper pipe bundle 38 is a curved heat exchange member formed by connecting a plurality of pipes in the width direction through which a heat exchange medium such as hot water can flow. The curved shape of the upper pipe bundle 38 is a curvature that matches the outer peripheral shape of the upper part of the liquefied gas container 30.
As shown in the figure, when the liquefied gas container 30 is mounted, the pair of upper pipe bundles 38 open upward. When the liquefied gas container 30 passes through and is placed on the pipe bundle 14, the upper pipe bundle 38 rotates around the hinge mechanism in the direction indicated by the arrow in the drawing, and the upper part of the liquefied gas container 30 is moved. Cover. As a result, the lower part of the liquefied gas container 30 is heated or cooled by the pipe bundle 14 and the upper part by the upper pipe bundle 38, and the heat exchange efficiency of the heating and cooling device 10 is improved.

It is a three-plane figure of the heating-cooling apparatus concerning this invention, (a) Top view, (b) Front view, (c) Side view. It is a cross-sectional schematic diagram of a pipe bundle, and represents (a) a pipe bundle before placing the liquefied gas container and (b) a pipe bundle in a state where the liquefied gas container is placed. It is a conceptual diagram of the gas supply apparatus concerning this invention. (A)-(d) It is sectional drawing which shows the suitable cross-sectional shape of piping. It is the elements on larger scale of the cross section of a pipe bundle. It is a schematic diagram which shows the specific example of an upper piping bundle.

Explanation of symbols

Heating and cooling device 10
Mount 12
Pipe bundle 14
Suspended lower part 16
Piping 20
Cable tie 22
Spring 24
Band 28
Liquefied gas container 30
Mounting surface 32
Thermal insulation cover 34
Thermally conductive filler 36
Upper pipe bundle 38
Gas supply device 50
Hot water tank 60
Piping for medium circulation 68
Gas phase gas outlet line 80
Liquid phase gas outlet line 82

Claims (7)

A heating / cooling device for heating or cooling a horizontal type liquefied gas container filled with liquefied gas and having a circular cross section, in which a plurality of rigid pipes through which a heat exchange medium flows traverses the longitudinal direction thereof A pipe bundle in which the mounting surface of the liquefied gas container is formed in a concave shape, and a gantry that suspends both ends of the bundle band of the pipe bundle. A heating and cooling device for a liquefied gas container. The heating / cooling device according to claim 1, wherein the pipe bundle and the mount are connected by an elastic body. The heating / cooling device according to claim 1 or 2 , wherein the cross-sectional shape of the pipe is elliptical, oval, or arcuate. The heating and cooling device according to any one of claims 1 to 3 , wherein the pipe bundle is provided with a heat conductive filler on a mounting surface of the liquefied gas container. The pipe bundle of heating and cooling device according to any one of claims 1 to 4, a gas supply apparatus formed by placing a liquefied gas container liquefied gas is filled. A gas supply device comprising heat exchange medium supply means for supplying water at 0 ° C to 40 ° C to the piping of the heating and cooling device according to any one of claims 1 to 4 . 6. The gas supply device according to claim 5 , further comprising pressing means for pressing the pipe bundle against the liquefied gas container.

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