JP2017078475A - Intermediate medium type gas vaporizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intermediate medium type gas vaporizer which enables reduction of a diameter of a housing of a warmer.SOLUTION: An intermediate medium type gas vaporizer includes: a housing part (10); an intermediate medium evaporation part (E1); a low temperature liquified gas vaporization part (E2); a housing (31); a gas heating part (E3); a first heat source medium supply passage (41); a second heat source medium supply passage (42); and a gas passage (50). The housing (31) includes: a trunk part (32); a first inflow part (32a) which is provided at one side end part of the trunk part (32); a second inflow part (32b) which is provided at the other side end part of the trunk part (32); and an outflow part (32c) provided at a portion of the trunk part (32) which is located between the one side end part and the other side end part. The gas passage (50) has: a first gas passage (50a) which supplies a part of a gas to the first inflow part (32a); and a second gas passage (50b) which supplies the other part of the gas to the second inflow part (32b).SELECTED DRAWING: Figure 1

Description

  The present invention relates to an intermediate medium gas vaporizer.

  Conventionally, an intermediate-medium gas vaporizer (IFV) that vaporizes a low-temperature liquefied gas such as liquefied natural gas (LNG) using an intermediate medium (propane or the like) is known. For example, Patent Document 1 discloses a gas including a shell that stores an intermediate medium, an intermediate medium evaporation tube, a heat transfer tube, an NG heater, an NG conduit, a heat source medium supply tube, and a heat source medium conduit. A vaporizer is disclosed.

  The intermediate medium evaporator tube is disposed in the lower part of the shell. A heat source medium is supplied into the intermediate medium evaporation pipe. The intermediate medium evaporation pipe evaporates the intermediate medium by exchanging heat between the heat source medium flowing in the intermediate medium evaporation pipe and the liquid intermediate medium.

  The heat transfer tube is disposed at an upper portion in the shell. LNG is supplied into the heat transfer tube. The heat transfer tube vaporizes LNG by exchanging heat between the LNG flowing in the heat transfer tube and the gas phase intermediate medium.

  The NG heater has a plurality of heat source tubes and a housing that accommodates these heat source tubes. A heat source medium is supplied to each heat source pipe through a heat source medium supply pipe, and NG that has flowed out of the heat transfer pipe is guided into the casing through an NG conduit. The housing is separated from the shell.

  The heat source medium conduit guides the heat source medium flowing out from the heat source pipe of the NG warmer into the intermediate medium evaporation pipe in the shell. That is, the heat source medium flows in series in this order through the heat source pipe and the intermediate medium evaporation pipe.

JP 2001-200995 A

  In the intermediate-medium gas vaporizer described in Patent Document 1, the NG heater is increased in size. Specifically, the amount of heat necessary for heating NG in the heat source tube and the amount of heat necessary for evaporating the liquid phase intermediate medium in the intermediate medium evaporation tube are smaller than the former, but the intermediate medium In the gas vaporizer, since the heat source medium flows in series through the heat source pipe and the intermediate medium evaporation pipe, the heat source medium is supplied with the same flow rate as the flow to the intermediate medium evaporation pipe. For this reason, since the number of heat source tubes of the warmer increases, the casing (NG warmer) has a large diameter.

  An object of the present invention is to provide an intermediate-medium gas vaporizer capable of reducing the diameter of a casing.

  In order to solve the above problems, supplying a heat source medium in parallel to a heat source pipe (hereinafter referred to as “gas heating section”) and an intermediate medium evaporation pipe (hereinafter referred to as “intermediate medium evaporation section”), that is, It is conceivable to provide a first heat source medium supply channel for supplying the heat source medium to the intermediate medium evaporation unit and a second heat source medium supply channel for supplying the heat source medium to the gas heating unit. In this way, it is possible to set the flow rate of the heat source medium supplied to the gas heating unit independently of the flow rate of the heat source medium required for the intermediate medium evaporation unit. As a result, the number of heat source tubes of the gas heating unit can be reduced, so that the diameter of the casing of the heater can be reduced. However, since the flow velocity of the gas flowing in the casing increases due to the reduction in the diameter of the casing, there is a concern that the gas heating unit vibrates due to the energy of the gas.

  Therefore, as a result of intensive studies, the present inventors increased or decreased the energy with the increase or decrease of the flow rate of gas per cross section of the casing, so that this flow rate was reduced, that is, the low temperature liquefied gas vaporization part flowed out. It was conceived that the vibration of the gas heating unit can be suppressed by dividing the gas flow path in the housing instead of the entire amount of gas flowing uniformly in the housing.

  The present invention has been made from such a viewpoint, and is an intermediate medium gas vaporizer that vaporizes a low-temperature liquefied gas using an intermediate medium having a boiling point higher than that of the low-temperature liquefied gas. A storage unit for storing a medium, an intermediate medium evaporation unit that is disposed in the storage unit and into which the heat source medium is introduced, and a low-temperature liquefied gas vaporization that is disposed in the storage unit and into which the low-temperature liquefied gas is introduced A casing in which gas generated by vaporization of the low-temperature liquefied gas in the low-temperature liquefied gas vaporization section, a gas heating section that is disposed in the casing and into which the heat source medium is introduced, The first heat source medium supply flow path for supplying the heat source medium to the intermediate medium evaporation section, the second heat source medium supply flow path for supplying the heat source medium to the gas heating section, and the low-temperature liquefied gas vaporization section Gas A gas flow path leading to the intermediate medium evaporating unit, wherein the intermediate medium evaporating unit exchanges heat between the heat source medium flowing in the intermediate medium evaporating unit and the intermediate medium existing outside the intermediate medium evaporating unit. The low-temperature liquefied gas vaporization section evaporates at least a part of Vaporizing at least part of the low-temperature liquefied gas, the gas heating unit heats the gas by causing heat exchange between the heat source medium flowing in the gas heating unit and the gas existing outside the gas heating unit; The casing is provided at a barrel portion that houses the gas heating portion, an end portion on one side of the barrel portion, a first inflow portion that allows the gas to flow into the barrel portion, Between the second inflow part for allowing the gas to flow into the body part, and the one side end part and the other side end part of the body part. And an outflow portion for allowing the gas to flow out of the body portion, and the gas flow path allows a part of the gas flowing out of the low-temperature liquefied gas vaporization portion to the first inflow portion. An intermediate medium type gas carburetor having a first gas flow path for supplying and a second gas flow path for supplying the remaining gas flowing out from the low-temperature liquefied gas vaporization section to the second inflow section is provided.

  In this intermediate medium type gas vaporizer, the heat source medium is supplied in parallel to the gas heating unit and the intermediate medium evaporation unit through the first heat source medium supply channel and the second heat source medium supply channel. The diameter can be reduced, and the gas flow path in the housing is separated, so that vibration of the gas heating unit is suppressed. Specifically, a part of the gas flowing out from the low temperature liquefied gas vaporization part flows into the trunk part from the first gas flow path and the first inflow part and then goes to the outflow part, while the remaining part of the gas is the second Since the gas flow path and the second inflow portion flow into the body portion and then go to the outflow portion, the gas flow rate per cross section of the body portion is reduced. Therefore, the vibration of the gas heating unit is suppressed.

  In this case, the heat source medium is provided in the common heat supply channel for supplying the heat source medium to the first heat source medium supply flow channel and the second heat source medium supply flow channel, and the first heat source medium supply flow channel. A first opening / closing valve capable of adjusting the degree of opening, and a second opening / closing valve provided in the second heat source medium supply flow path, the opening degree of which can be adjusted. It is preferable that the supply ratio of the supply amount of the heat source medium to the intermediate medium evaporation unit to the supply amount of the heat source medium to the gas heating unit is set to 3 or more and 5 or less.

  In this way, both reduction in the diameter of the housing and suppression of vibration of the gas heating unit can be effectively achieved.

  Furthermore, in this case, it is preferable to further include a heat source medium merging channel for merging the heat source medium flowing out from the gas heating unit with the first heat source medium supply channel.

  In this way, since the supply amount of the heat source medium to the intermediate medium evaporation unit is ensured, the supply amount of the heat source medium to the gas heating unit can be increased within the range of the supply ratio. As a result, the amount of heat given to the gas by the heat source medium in the gas heating unit increases, so that the degree of freedom in designing the gas heating unit such as reducing the heat transfer area of the gas heating unit is improved.

  In the intermediate medium gas vaporizer, the ratio of the length of the body portion to the diameter of the body portion is preferably set to 5 or more and 10 or less.

  In the intermediate medium type gas vaporizer, the ratio of the diameter of the body portion to the diameter of the housing portion is preferably set to 0.5 or less.

  In the intermediate medium type gas vaporizer, the ratio of the length of the housing portion to the length of the body portion is preferably set to 1.3 or less.

  Further, in the intermediate medium type gas vaporizer, connected to one end of the barrel, communicated with the inside of the gas heating unit, and connected to one end of the barrel, the gas An outlet chamber communicating with the inside of the heating unit, connected to one end of the barrel, a partition wall partitioning the inlet chamber and the outlet chamber, connected to the other end of the barrel, A folding chamber communicating with the inside of the gas heating unit may be further provided.

  In this way, since the length of the gas heating part is substantially halved, the entire length of the heater is shortened.

  Further, the present invention is an intermediate medium type gas vaporizer for vaporizing a low-temperature liquefied gas using an intermediate medium having a boiling point higher than the boiling point of the low-temperature liquefied gas, containing the intermediate medium, An intermediate medium evaporation section that is disposed in the housing section and into which the heat source medium is introduced, a low-temperature liquefied gas vaporization section that is disposed in the housing section and into which the low-temperature liquefied gas is introduced, and is separated from the housing section. A casing into which gas generated by vaporization of the low-temperature liquefied gas in the low-temperature liquefied gas vaporization section, a gas heating section that is arranged in the casing and into which the heat source medium is introduced, The first heat source medium supply flow path for supplying the heat source medium to the intermediate medium evaporation section, the second heat source medium supply flow path for supplying the heat source medium to the gas heating section, and the low-temperature liquefied gas vaporization section Gas into the housing A gas flow path, wherein the intermediate medium evaporation section exchanges heat between the heat source medium flowing in the intermediate medium evaporation section and the intermediate medium existing outside the intermediate medium evaporation section. The low temperature liquefied gas vaporization unit evaporates at least a part, and the low temperature liquefied gas vaporization unit heat-exchanges the low temperature liquefied gas flowing in the low temperature liquefied gas vaporization unit and the intermediate medium existing outside the low temperature liquefied gas vaporization unit. Vaporizing at least part of the liquefied gas, the gas heating unit heats the gas by exchanging heat between the heat source medium flowing in the gas heating unit and the gas existing outside the gas heating unit, The casing is provided at a barrel portion that houses the gas heating unit, an end portion on one side of the barrel portion, a first outflow portion that allows the gas to flow out of the trunk portion, and the trunk portion A second outflow portion that is provided at an end portion on the other side and allows the gas to flow out from the body portion; and a portion between the end portion on the one side and the end portion on the other side of the body portion. An intermediate medium type gas carburetor provided at the downstream end of the gas flow path and connected to the inflow portion. provide.

  Also in this intermediate medium type gas vaporizer, the casing can be reduced in diameter, and the gas flow path in the casing is separated, so that the vibration of the gas heating unit is suppressed.

  As described above, according to the present invention, it is possible to provide an intermediate-medium gas vaporizer capable of reducing the diameter of the housing and suppressing the vibration of the gas heating unit.

It is a figure which shows the outline of a structure of the intermediate | middle medium type gas vaporizer of one Embodiment of this invention. It is a top view of the intermediate | middle medium type gas vaporizer shown by FIG. It is a figure which shows the modification of the intermediate | middle medium type gas vaporizer shown by FIG. It is a figure which shows the modification of the arrangement | positioning relationship between an accommodating part and a housing | casing. It is a figure which shows the modification of a warmer.

  An intermediate medium type gas vaporizer 1 according to an embodiment of the present invention will be described with reference to FIGS. The intermediate medium gas vaporizer 1 is an intermediate medium gas vaporizer (IFV) that vaporizes a low-temperature liquefied gas using an intermediate medium having a boiling point higher than that of the low-temperature liquefied gas. In the present embodiment, liquefied natural gas (LNG) is used as the low-temperature liquefied gas, and propane is used as the intermediate medium. However, the low temperature liquefied gas may be ethylene, liquefied oxygen, liquefied nitrogen or the like. Further, the intermediate medium is not limited to propane. In the intermediate medium gas vaporizer 1, the intermediate medium is heated by a heat source medium (seawater, air, etc.).

  As shown in FIG. 1, the intermediate medium type gas vaporizer 1 includes an intermediate medium 2, a storage unit 10 that stores the intermediate medium 2, an intermediate medium evaporation unit E <b> 1, a low-temperature liquefied gas vaporization unit E <b> 2, and heating. A heat source medium supply channel 41, a second heat source medium supply channel 42, and a gas channel 50.

  The accommodating part 10 is formed of a single casing that collectively accommodates the intermediate medium 2, the intermediate medium evaporating part E1, and the low-temperature liquefied gas vaporizing part E2. The accommodating part 10 is formed in a cylindrical shape.

  The intermediate medium evaporating unit E1 is disposed in the accommodating unit 10. More specifically, the intermediate medium evaporating unit E1 is disposed in a lower part (a position where the intermediate medium 2 in the liquid phase is immersed) in the housing unit 10. The intermediate medium evaporation part E1 is configured by a bundle of a plurality of heat transfer tubes. A heat source medium is introduced into the intermediate medium evaporation section E1. The intermediate medium evaporating unit E1 evaporates at least a part of the intermediate medium 2 by exchanging heat between the heat source medium flowing in the intermediate medium evaporating unit E1 and the liquid intermediate medium 2 existing in the lower part of the storage unit 10. Let

  The low-temperature liquefied gas vaporization part E <b> 2 is disposed in the housing part 10. More specifically, the low temperature liquefied gas vaporization part E2 is arrange | positioned in the upper part in the accommodating part 10 (area | region where the gaseous-phase intermediate medium 2 exists). In this embodiment, the low temperature liquefied gas vaporization part E2 is comprised by the heat exchanger tube formed in the U-shape. A low-temperature liquefied gas is introduced into the low-temperature liquefied gas vaporization section E2. The low-temperature liquefied gas vaporization section E2 vaporizes at least a part of the low-temperature liquefied gas by exchanging heat between the low-temperature liquefied gas flowing in the low-temperature liquefied gas vaporization section E2 and the gas phase intermediate medium 2 in the storage section 10. Let

  An inlet chamber 21 and an outlet chamber 22 that are partitioned by a partition plate 20 are connected to a lower portion of one end portion of the accommodating portion 10. The inlet chamber 21 and the outlet chamber 22 communicate with the intermediate medium evaporator E1. A folding chamber 23 is connected to the lower part of the other end of the housing part 10. The folding chamber 23 communicates with the inside of the intermediate medium evaporator E1. That is, the intermediate medium evaporation unit E1 is a so-called two-pass method.

  An inlet chamber 25 and an outlet chamber 26 that are partitioned by a partition plate 24 are connected to the upper portion of the accommodating portion 10. One end of the low-temperature liquefied gas vaporization section E2 is connected to the inlet chamber 25 so that the inside of the low-temperature liquefied gas vaporization section E2 and the inside of the inlet chamber 25 communicate with each other. The other end of the low temperature liquefied gas vaporization part E2 is connected to the outlet chamber 26 so that the inside of the low temperature liquefied gas vaporization part E2 and the inside of the outlet chamber 26 communicate.

  The warmer 30 heats the gas generated by the vaporization of the low-temperature liquefied gas. The warmer 30 includes a gas heating unit E3 into which a heat source medium is introduced, and a housing 31 that houses the gas heating unit E3.

  The gas heating unit E3 is configured by a bundle of a plurality of heat transfer tubes. The gas heating unit E3 heats the gas by exchanging heat between the heat source medium flowing in the gas heating unit E3 and the gas supplied into the housing 31.

  The housing 31 includes a body portion 32, a first inflow portion 32a, a second inflow portion 32b, and an outflow portion 32c.

  The trunk | drum 32 is formed in the cylindrical shape which can accommodate the gas heating part E3. The first inflow portion 32 a is provided at an end portion on one side of the body portion 32 and allows gas to flow into the body portion 32. The second inflow portion 32 b is provided at the other end portion of the body portion 32 and allows gas to flow into the body portion 32. The outflow portion 32 c is provided in a portion between the end portion on one side and the end portion on the other side of the body portion 32, and allows gas to flow out from the body portion 32.

  An inlet chamber 36 and an outlet chamber 37 that are partitioned by a partition plate 35 are connected to one end portion of the body portion 32. The inlet chamber 36 and the outlet chamber 37 communicate with the inside of the gas heating unit E3. A folding chamber 38 is connected to the other end portion of the body portion 32. The folding chamber 38 communicates with the gas heating unit E3. That is, the gas heating unit E3 is a so-called two-pass method.

  As shown in FIG. 2, the warmer 30 is placed on the upper portion of the housing unit 10. In the present embodiment, the ratio L3 / D3 of the length L3 of the body portion 32 to the diameter D3 of the body portion 32 is set to 5 or more and 10 or less. A ratio D3 / D1 of the diameter D3 of the trunk portion 32 to the diameter D1 of the accommodating portion 10 is set to 0.5 or less. A ratio L1 / L3 of the length L1 of the accommodating portion 10 to the length L3 of the trunk portion 32 is set to 0.8 or more and 1.3 or less.

  The first heat source medium supply channel 41 is a channel for supplying the heat source medium to the intermediate medium evaporation unit E1. The first heat source medium supply channel 41 is connected to the inlet chamber 21 connected to the housing unit 10. The first heat source medium supply channel 41 is provided with a first on-off valve V1 whose opening degree can be adjusted.

  The second heat source medium supply channel 42 is a channel for supplying the heat source medium to the gas heating unit E3. The second heat source medium supply flow path 42 is connected to an inlet chamber 36 connected to the trunk portion 32. The second heat source medium supply channel 42 is provided with a second on-off valve V2 capable of adjusting the opening degree.

  In the present embodiment, a common supply channel 40 and a heat source medium merging channel 43 are further provided.

  The common supply channel 40 is a channel that supplies the heat source medium to the first heat source medium supply channel 41 and the second heat source medium supply channel 42. The common supply channel 40 is provided with a flow rate adjusting unit (an on-off valve, a flow meter, etc.) that can adjust the flow rate of the heat source medium. The opening degree of each on-off valve V1, V2 is merged with the first heat source medium supply channel 41 through the heat source medium flow rate branched from the common supply channel 40 to the first heat source medium supply channel 41 and the heat source medium merge channel 43. The ratio of the combined amount of the heat source medium to the flow rate of the heat source medium branched from the common supply channel 40 to the second heat source medium supply channel 42, that is, the supply amount of the heat source medium to the intermediate medium evaporation unit E1 The supply ratio with respect to the supply amount of the heat source medium to the gas heating unit E3 is set to be 3 or more and 5 or less.

  Each of the on-off valves V1, V2 may be a restrictive orifice that has a preset opening degree and can be replaced.

  The heat source medium merge channel 43 is a channel that merges the heat source medium flowing out from the gas heating unit E3 with the first heat source medium supply channel 41. Specifically, the upstream end of the heat source medium merging flow path 43 is connected to an outlet chamber 37 connected to the body 32. The downstream end of the heat source medium merge channel 43 is connected to a portion of the first heat source medium supply channel 41 between the first on-off valve V1 and the inlet chamber 21. The downstream end of the heat source medium merge channel 43 may be directly connected to the inlet chamber 21.

  The gas flow path 50 is a flow path that guides the gas flowing out from the low-temperature liquefied gas vaporization section E2 to the housing 31. The upstream end portion of the gas flow path 50 is connected to the outlet chamber 26 connected to the accommodating portion 10. In the present embodiment, the downstream portion of the gas flow path 50 is bifurcated. Specifically, the gas flow path 50 includes a first gas flow path 50a that supplies a part (half in this embodiment) of the gas flowing out from the low temperature liquefied gas vaporization section E2 to the first inflow section 32a, and a low temperature liquefaction. A second gas flow path 50b for supplying the remaining gas flowing out from the gas vaporization section E2 to the second inflow section 32b. The downstream end of the first gas passage 50a is connected to the first inflow portion 32a, and the downstream end of the second gas passage 50b is connected to the second inflow portion 32b.

  When the intermediate medium gas vaporizer 1 is driven, the heat source medium is supplied to the inlet chamber 21 through the first heat source medium supply flow path 41 and the heat source medium is supplied to the inlet chamber 36 through the second heat source medium supply flow path 42. On the other hand, LNG is supplied to the inlet chamber 25.

  The heat source medium supplied to the inlet chamber 21 flows through the intermediate medium evaporator E1, the folding chamber 23, the intermediate medium evaporator E1, and the outlet chamber 22 in this order, and then is discharged to the outside. At this time, the heat source medium heats the liquid-phase intermediate medium 2 in the intermediate medium evaporation section E1, whereby at least a part of the intermediate medium 2 evaporates. The heat source medium supplied to the inlet chamber 36 flows through the gas heating unit E3, the folding chamber 38, the gas heating unit E3, and the outlet chamber 37 in this order, and then the first heat source medium supply channel 41 through the heat source medium merge channel 43. To join. At this time, the heat source medium heats the gas (NG) in the gas heating unit E3.

  On the other hand, the LNG supplied to the inlet chamber 25 is vaporized by receiving heat from the vapor phase intermediate medium 2 in the accommodating portion 10 in the process of passing through the low temperature liquefied gas vaporizing portion E2. The low-temperature NG that has flowed out of the low-temperature liquefied gas vaporization section E <b> 2 flows into the housing 31 through the outlet chamber 26 and the gas flow path 50. Specifically, 50% of the low temperature NG flowing out from the outlet chamber 26 flows into the body portion 32 via the first gas flow path 50a and the first inflow portion 32a and flows out from the outlet chamber 26. The remaining 50% flows into the body portion 32 via the second gas flow path 50b and the second inflow portion 32b. The low-temperature NG that has flowed into the body portion 32 from the first inflow portion 32a and the low-temperature NG that has flowed into the body portion 32 from the second inflow portion 32b respectively travel through the gas heating portion E3 in the process toward the outflow portion 32c. After being heated by the flowing heat source medium, it flows out as NG at room temperature from the outflow part 32c.

  As described above, in the intermediate medium type gas vaporizer 1, the first heat source medium supply channel 41 and the second heat source medium supply channel 42 are connected in parallel to the gas heating unit E3 and the intermediate medium evaporation unit E1. Since the heat source medium is supplied to the casing 31, the casing 31 can be reduced in diameter, and the gas flow path in the casing 31 is separated, so that the vibration of the gas heating section E3 is suppressed. Specifically, about half of the gas flowing out from the low temperature liquefied gas vaporization section E2 flows into the trunk section 32 from the first gas flow path 50a and the first inflow section 32a and then goes to the outflow section 32c. The remaining half of the gas flows from the second gas flow path 50b and the second inflow portion 32b into the trunk portion and then toward the outflow portion, so that the gas flow rate per cross section of the trunk portion 32 is reduced. Therefore, the energy of the gas flowing in the body 32 is about one-fourth that in the case where the entire amount of the gas flowing out from the low temperature liquefied gas vaporization section E2 flows in the body 32, so that the gas heating unit The vibration of E3 is suppressed.

  Since the number of heat transfer tubes constituting the gas heating unit E3 is reduced by supplying the heat source medium in parallel to the gas heating unit E3 and the intermediate medium evaporation unit E1, Manufacturing costs are greatly reduced due to the reduced thickness of the tube sheet.

  In the present embodiment, the opening degree of each on-off valve V1, V2 is set so that the supply ratio is 3 or more and 5 or less, so that the diameter of the casing 31 is reduced and the vibration of the gas heating unit E3 is reduced. Both deterrence is effectively achieved.

  In the present embodiment, since the heat source medium merging flow path 43 is provided, the supply amount of the heat source medium to the intermediate medium evaporation unit E1 is ensured. For this reason, the supply amount of the heat source medium to the gas heating unit E3 can be increased within the range of the supply ratio. As a result, the amount of heat given to the gas by the heat source medium in the gas heating unit E3 increases, so that the degree of freedom in designing the gas heating unit E3 such as reducing the heat transfer area of the gas heating unit E3 is improved.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, as shown in FIG. 3, the inlet chamber 36 a may be connected to one end portion of the trunk portion 32, and the outlet chamber 37 a may be connected to the other end portion of the trunk portion 32. That is, the gas heating unit E3 may be a so-called one-pass method. The same applies to the intermediate medium evaporation unit E1.

  Further, as shown in FIG. 4, the warmer 30 may be placed on the side of the housing unit 10.

  Further, as shown in FIG. 5, the casing 31 includes a trunk portion 32, a first outflow portion 32 d provided at one end portion of the trunk portion 32, and an end portion on the other side of the trunk portion 32. You may have the 2nd outflow part 32e provided, and the inflow part 32f provided in the site | part between the edge part of one side among the trunk | drum 32, and the edge part of the other side. In this case, the downstream portion of the gas flow path 50 is connected to the inflow portion 32f without branching into two branches.

DESCRIPTION OF SYMBOLS 1 Intermediate | middle medium type gas vaporizer 2 Intermediate | middle medium 10 Accommodating part 30 Heater 31 Case 32 Trunk part 32a 1st inflow part 32b 2nd inflow part 32c Outflow part 35 Partition wall 36 Inlet room 37 Outlet room 38 Folding room 40 Common Supply flow path 41 First heat source medium supply flow path 42 Second heat source medium supply flow path 43 Heat source medium merge flow path 50 Gas flow path 50a First gas flow path 50b Second gas flow path E1 Intermediate medium evaporation section E2 Low temperature liquefied gas Vaporization part E3 Gas heating part V1 1st on-off valve V2 2nd on-off valve

Claims (8)

An intermediate-medium gas vaporizer that vaporizes a low-temperature liquefied gas using an intermediate medium having a boiling point higher than that of the low-temperature liquefied gas,
An accommodating portion for accommodating the intermediate medium;
An intermediate medium evaporation section that is disposed in the housing section and into which the heat source medium is introduced;
A low-temperature liquefied gas vaporization section, which is disposed in the housing section and into which the low-temperature liquefied gas is introduced;
A casing into which gas generated by vaporization of the low-temperature liquefied gas in the low-temperature liquefied gas vaporization unit is introduced;
A gas heating unit disposed in the housing and into which the heat source medium is introduced;
A first heat source medium supply flow path for supplying the heat source medium to the intermediate medium evaporation section;
A second heat source medium supply channel for supplying the heat source medium to the gas heating unit;
A gas flow path for guiding the gas flowing out from the low-temperature liquefied gas vaporization section to the housing,
The intermediate medium evaporation section evaporates at least a part of the intermediate medium by exchanging heat between the heat source medium flowing in the intermediate medium evaporation section and the intermediate medium existing outside the intermediate medium evaporation section,
The low-temperature liquefied gas vaporization unit exchanges heat between the low-temperature liquefied gas flowing in the low-temperature liquefied gas vaporization unit and the intermediate medium existing outside the low-temperature liquefied gas vaporization unit, thereby at least part of the low-temperature liquefied gas Vaporize,
The gas heating unit heats the gas by exchanging heat between the heat source medium flowing in the gas heating unit and the gas existing outside the gas heating unit,
The housing is
A body portion for accommodating the gas heating unit;
A first inflow portion that is provided at an end portion on one side of the body portion and allows the gas to flow into the body portion;
A second inflow portion that is provided at an end portion on the other side of the body portion and allows the gas to flow into the body portion;
An outflow portion that is provided at a portion between the end portion on the one side and the end portion on the other side of the body portion, and causes the gas to flow out from the body portion;
The gas flow path is
A first gas flow path for supplying a part of the gas flowing out from the low-temperature liquefied gas vaporization section to the first inflow section;
An intermediate medium type gas vaporizer, comprising: a second gas flow path for supplying the remaining part of the gas flowing out from the low-temperature liquefied gas vaporization section to the second inflow section. The intermediate medium gas vaporizer according to claim 1,
A common supply channel for supplying the heat source medium to the first heat source medium supply channel and the second heat source medium supply channel;
A first on-off valve provided in the first heat source medium supply flow path and capable of adjusting an opening;
A second on-off valve provided in the second heat source medium supply flow path and capable of adjusting an opening;
The opening degree of each on-off valve is set such that the supply ratio of the supply amount of the heat source medium to the intermediate medium evaporation section to the supply amount of the heat source medium to the gas heating section is 3 or more and 5 or less. Intermediate medium gas vaporizer. The intermediate medium gas vaporizer according to claim 2,
An intermediate-medium gas vaporizer further comprising a heat source medium merging channel that merges the heat source medium flowing out from the gas heating unit into the first heat source medium supply channel. The intermediate-medium gas vaporizer according to any one of claims 1 to 3,
The ratio of the length of the trunk portion to the diameter of the trunk portion is an intermediate medium gas vaporizer set to 5 or more and 10 or less. The intermediate-medium gas vaporizer according to any one of claims 1 to 4,
The ratio of the diameter of the trunk portion to the diameter of the housing portion is an intermediate medium gas vaporizer set to 0.5 or less. The intermediate medium gas vaporizer according to any one of claims 1 to 5,
The ratio of the length of the accommodating portion to the length of the trunk portion is an intermediate medium gas vaporizer set to 1.3 or less. The intermediate medium gas vaporizer according to any one of claims 1 to 6,
An inlet chamber connected to one end of the barrel and communicating with the gas heating unit;
An outlet chamber connected to one end of the barrel and communicating with the gas heating unit;
A partition wall connected to an end portion on one side of the body portion and partitioning the inlet chamber and the outlet chamber;
An intermediate-medium gas vaporizer, further comprising: a folding chamber connected to the other end of the body and communicating with the gas heating unit. An intermediate-medium gas vaporizer that vaporizes a low-temperature liquefied gas using an intermediate medium having a boiling point higher than that of the low-temperature liquefied gas,
An accommodating portion for accommodating the intermediate medium;
An intermediate medium evaporation section that is disposed in the housing section and into which the heat source medium is introduced;
A low-temperature liquefied gas vaporization section, which is disposed in the housing section and into which the low-temperature liquefied gas is introduced;
A casing into which gas generated by vaporization of the low-temperature liquefied gas in the low-temperature liquefied gas vaporization unit is introduced;
A gas heating unit disposed in the housing and into which the heat source medium is introduced;
A first heat source medium supply flow path for supplying the heat source medium to the intermediate medium evaporation section;
A second heat source medium supply channel for supplying the heat source medium to the gas heating unit;
A gas flow path for guiding the gas flowing out from the low-temperature liquefied gas vaporization section to the housing,
The intermediate medium evaporation section evaporates at least a part of the intermediate medium by exchanging heat between the heat source medium flowing in the intermediate medium evaporation section and the intermediate medium existing outside the intermediate medium evaporation section,
The low-temperature liquefied gas vaporization unit exchanges heat between the low-temperature liquefied gas flowing in the low-temperature liquefied gas vaporization unit and the intermediate medium existing outside the low-temperature liquefied gas vaporization unit, thereby at least part of the low-temperature liquefied gas Vaporize,
The gas heating unit heats the gas by exchanging heat between the heat source medium flowing in the gas heating unit and the gas existing outside the gas heating unit,
The housing is
A body portion for accommodating the gas heating unit;
A first outflow part that is provided at one end of the body part, and causes the gas to flow out of the body part;
A second outflow portion that is provided at an end portion on the other side of the body portion, and causes the gas to flow out of the body portion;
An inflow portion that is provided at a portion between the one end portion and the other end portion of the body portion, and that allows the gas to flow into the body portion;
The intermediate-medium gas vaporizer, wherein the downstream end of the gas flow path is connected to the inflow portion.