WO2020009396A1

WO2020009396A1 - Fluid tank having internal evaporator

Info

Publication number: WO2020009396A1
Application number: PCT/KR2019/007993
Authority: WO
Inventors: 박훈진; 박근오
Original assignee: 주식회사래티스테크놀로지
Priority date: 2018-07-02
Filing date: 2019-07-02
Publication date: 2020-01-09
Also published as: JP7126024B2; KR20200003673A; JP2021529293A; EP3819532A1; KR102117852B1; CN112384731A; EP3819532A4

Abstract

The present invention relates to a fluid tank having an internal evaporator and, more specifically, to a fluid tank having an internal evaporator, which can convert a liquid-phase fluid stored inside a tank main body to a gas-phase fluid by means of a conversion means provided inside the tank main body and send the converted gas-phased fluid to a point of use by means of a sending means, and, thereby, has an excellent space utilization, while preventing ultra-low temperature brittleness from being induced.

Description

Fluid tank with internal evaporator

The present invention relates to a fluid tank having an internal evaporator, and more particularly, converts the liquid fluid stored in the tank body into gaseous fluid through a conversion means such as an evaporator provided in the tank body, and sends the converted gaseous fluid. The present invention relates to a fluid tank having an internal evaporator that can be sent to a place of use by means, thereby providing excellent space utilization and preventing ultra-cold brittleness.

1 is a view showing a conventional fluid tank 10.

Referring to FIG. 1, a conventional fluid tank 10 includes a tank body 11 in which a liquid fluid such as liquefied natural gas is stored.

At this time, in order to supply a gaseous fluid such as natural gas to the destination is provided with a sending means 13 for sending a liquid fluid stored in the tank body 11, it is sent to the outside through this. The liquid fluid sent to the outside is heated through an evaporator 12 provided outside the tank body 11 to be converted into a gaseous fluid, so that the gaseous fluid can be supplied to the place of use.

At this time, in order to stop the operation so that the gaseous fluid is not supplied to the place of use, the

valves

15 and 16 before and after the evaporator 12 are closed. At this time, the remaining liquid fluid should be discharged to the discharge portion through the control of the evaporator control valve 18 including the evaporator pressure reducing valve 18-1 or the evaporator safety valve 18-2.

In addition, since the liquid fluid flows out of the tank body 11 and is converted into the gaseous fluid through the evaporator 12, this is not only a risk of causing ultra low temperature embrittlement of the cryogenic liquid fluid, but also an evaporator for converting into a gaseous fluid. The problem which requires the separate space by provision of (12) arises.

The fluid tank 20 illustrated in FIG. 2 is designed to solve the problem of the fluid tank 10 illustrated in FIG. 1, and includes an evaporator 22 inside the tank body 21 and the evaporator 22. The gaseous fluid converted through the gas is sent to the gaseous fluid using place through the compressor 22-1.

However, in the case of the fluid tank 20 shown in FIG. 2, since the entire liquid fluid inside the tank body 21 needs to be heated through the evaporator 22, there is a problem in that a lot of energy for converting into a gaseous fluid is consumed. In addition, when the operation is stopped, the

valves

25 and 26 before and after the compressor 22-1 are locked, and the remaining liquid fluid is an evaporator including an evaporator pressure reducing valve 28-1 or an evaporator safety valve 28-2. It should be discharged to the discharge part through the control of the control valve (28).

In addition, since the compressor 22-1 for transmitting the gaseous fluid converted in the tank body 21 to the destination must be separately provided, not only a separate space for the compressor 22-1 is required. Due to frequent failure of the compressor 22-1, maintenance costs are increased.

17-1, 17-2, 27-1, and 27-2 shown in FIGS. 1 and 2 are tank pressure reducing valves 17-1 and 27-1 and tanks for pressure control of the

tank bodies

11 and 21.

Tank control valves

17 and 27 including safety valves 17-2 and 27-2.

The present invention has been made to solve the problems described above, the object of the present invention is to provide a natural fluid, such as natural gas through the conversion means such as evaporator provided in the tank body of liquid fluid, such as liquefied natural gas stored inside the tank body It is to provide a fluid tank having an internal evaporator that can be converted to the gaseous fluid of the, and the converted gaseous fluid to the place of use through the delivery means, to prevent the ultra-low temperature brittleness of the liquefied natural gas.

It is also an object of the present invention to provide a fluid tank having an internal evaporator which can not only provide excellent space utilization, but also reduce manufacturing cost and manufacturing time, since a control means for discharging or controlling a liquid fluid is not required. .

In addition, an object of the present invention is configured so that the liquid fluid stored in the tank body is not affected by the conversion means provided inside the tank body, thereby preventing the conversion of the liquid fluid, such as liquefied natural gas, and to the liquid phase It is to provide a fluid tank having an internal evaporator that can minimize the energy consumption to maintain.

A fluid tank having an internal evaporator according to the present invention includes a tank body 100 in which a liquid fluid is stored; A conversion means (200) provided inside the tank main body (100) to supply a liquid fluid and converting the liquid fluid into a gaseous fluid by exchanging a heating medium supplied from the outside with the liquid fluid; And supplying the liquid fluid inside the tank body 100 to the converting means 200, and sending the gaseous fluid converted by the converting means 200 to an external place of use through the gaseous fluid pipe 300. It is characterized in that it comprises a; transmitting means (400).

In addition, the gas fluid pipe 300 is characterized in that it comprises a gaseous fluid piping control valve 310 that can control the gaseous fluid flowing to the destination.

In addition, the fluid tank 1000 further includes a pressure control unit 500 including a tank pressure reducing valve 510 and a tank safety valve 520 capable of controlling the pressure inside the tank body 100. It is done.

In addition, the conversion means 200 is a conversion means body 210 for receiving a heating medium to convert the liquid fluid into a gaseous fluid, and a high temperature heating medium pipe that is supplied from the outside to the conversion means body 210 to the heating medium ( 220, and a low-temperature heating medium pipe 230 through which the heating medium heat-exchanged with the liquid fluid in the converting means body 210 is discharged to the outside, and heat insulating means provided to insulate the converting means body 210. It is characterized by.

In addition, the heat insulating means is a first heat insulating means 241 made of a heat insulating material on the outer circumference of the converting means body 210 or a second heat insulating means made of vacuum means to maintain the outer circumference of the converting means body 210 in a vacuum state. It is characterized by the (242).

In addition, the conversion means 200 is provided to be detachably attached to the conversion means body 210, further comprising a support 250 for fixing the conversion means body 210 inside the tank body 100; It features.

In addition, the tank body 100 is characterized in that it comprises a maintenance opening 110 which is provided to be opened and closed.

In addition, the conversion means 200 further includes an exhaust gas pipe 260 that allows the external gas to flow into the high temperature heating medium pipe 220, the exhaust gas pipe 260 is the high temperature heating medium pipe. It characterized in that it comprises a discharge gas control valve (261) that can control the outside gas flowing into the 220.

The fluid tank having an internal evaporator according to the present invention converts a liquid fluid such as liquefied natural gas stored in the tank body into a gaseous fluid such as natural gas through a conversion means provided inside the tank body, and sends the converted gaseous fluid. By sending to the place of use through the means, there is an advantage that can prevent the ultra-low temperature brittleness of the liquefied natural gas.

In addition, the fluid tank having an internal evaporator according to the present invention does not need a control means for discharging or controlling the liquid fluid, it is excellent in space utilization, and has the advantage of reducing the manufacturing cost and manufacturing time.

In addition, the fluid tank having an internal evaporator according to the present invention is configured so that the liquid fluid stored in the tank body is not affected by the conversion means provided inside the tank body, thereby preventing the conversion of the liquid fluid, such as liquefied natural gas In addition, there is an advantage that can minimize the energy consumption for maintaining it in the liquid phase.

1 is a view showing a conventional fluid tank

Figure 2 is another view showing a conventional fluid tank

3 is a view showing a fluid tank having an internal evaporator according to a first embodiment of the present invention.

4 is yet another view of a fluid tank having an internal evaporator according to a first embodiment of the present invention.

5 is a view showing a fluid tank having an internal evaporator according to a second embodiment of the present invention.

6 is yet another view of a fluid tank having an internal evaporator according to a second embodiment of the present invention.

7 is a view showing a fluid tank having an internal evaporator according to a third embodiment of the present invention.

8 is yet another view of a fluid tank having an internal evaporator according to a third embodiment of the present invention.

Hereinafter, a fluid tank having an internal evaporator according to the present invention as described above will be described in detail with reference to the accompanying drawings.

3 is a view showing a fluid tank having an internal evaporator according to a first embodiment of the present invention, Figure 4 is another view showing a fluid tank having an internal evaporator according to a first embodiment of the present invention.

3 and 4, the fluid tank 1000 having the internal evaporator according to the first embodiment of the present invention is a configuration for converting the stored liquid fluid into gaseous fluid and sending the gaseous fluid to a place of use. It comprises a tank body 100, a conversion means 200 and the sending means 400.

The tank body 100 is a configuration in which a liquid fluid is stored, in which case the liquid fluid stored in the tank body 100 may be liquefied natural gas (LNG), for this purpose, the tank body 100 stores the liquefied natural gas. It should be able to maintain the cryogenic temperature.

Of course, the tank body 100 of the fluid tank 1000 having an internal evaporator according to the first embodiment of the present invention is capable of storing various liquid fluids to be stored while maintaining ultra low temperature in addition to liquefied natural gas.

In addition, the tank body 100 may include an inlet (not shown) for supplying and storing the liquid fluid, the discharge portion for discharging the liquid fluid from the inside of the tank body 100 for any selected purpose ( Not shown). At this time, the inlet is composed of a nozzle to supply the liquid fluid into the tank body 100 in a spray method, or various other embodiments are possible, a detailed description as a known technique will be omitted.

The converting means 200 is provided inside the tank body 100 and heat exchanges with the liquid fluid using a heating medium supplied from the outside, thereby forming a gas phase fluid through heating of the liquid fluid.

At this time, the conversion means 200 is preferably made of an evaporator for heating the liquid fluid to convert to a gaseous fluid, of course, may be made of a variety of other means that can be converted to the gaseous fluid by heating the liquid fluid.

The heating medium in the conversion means 200 consisting of an evaporator may be a means for heating the liquid fluid through the supply of electrical energy, but heating in the fluid tank 1000 having the internal evaporator according to the first embodiment of the present invention. The medium is composed of a gas phase heating medium means or a liquid phase heating medium means, by heat exchange with the liquid fluid through it, it is preferable to heat the liquid fluid stored in the tank body 100 to form a gaseous fluid.

The sending means 400 supplies the liquid fluid inside the tank body 100 to the converting means 200, converts the liquid gas into gaseous fluid through heating of the liquid fluid, and converts the gaseous fluid from the outside through the gaseous fluid pipe 300. It is provided to send to a use place (engine etc.).

At this time, the sending means 400 may be made of a pump that supplies the liquid fluid to the conversion means 200, the gaseous fluid converted in the conversion means 200 can be supplied to the external place of use through the gaseous fluid pipe 300. have.

Another means of the delivery means 400 is to supply a liquid fluid to the conversion means 200, such as a heating pressurized device that can be heated to pressurize the inside of the tank body 100 by heating the liquid fluid to the outside, If the gaseous fluid converted by the converting means 200 can be sent to an external place of use through the gaseous fluid pipe 300, various embodiments are possible.

As described above, the fluid tank 1000 having the internal evaporator according to the first embodiment of the present invention is a tank body as a gaseous fluid through a conversion means 200 provided inside the tank body 100 for cryogenic liquid fluids. (100) by converting inside, and can be sent to the place of use through the gas phase fluid pipe 300, because the fluid in the liquid state does not flow outside the tank body 100, eliminating the occurrence of ultra-low temperature brittleness caused by the liquid Can be.

In addition, since the converting means 200 for converting the liquid fluid into the gaseous fluid is located inside the tank body 100, the converting means 200 for converting the liquid fluid into the gaseous fluid from the outside of the tank body 100 is not provided. There is an advantage to save space for providing it.

In addition, since the liquid fluid is converted into gaseous fluid through the conversion means 200 provided in the tank body 100, the liquid body is converted into gaseous fluid in order to supply the gaseous fluid to the place of use outside the tank body 100. It is not necessary to provide an external conversion means (evaporator), it is possible to eliminate the valve for controlling the flow of the liquid fluid, and the measuring device of the liquid fluid for controlling the valve, so that the manufacturing cost and manufacturing time of the fluid tank 1000 In addition, there is an advantage of excellent space utilization.

In addition, the fluid tank 1000 having the internal evaporator according to the first embodiment of the present invention through the gas phase fluid pipe 300 using the operation of the conversion means 200 and the sending means 400 as described above The gaseous fluid is supplied to the place of use, and the gaseous fluid pipe 300 may include a gaseous fluid pipe control valve 310 for controlling the gaseous fluid sent to the place of use.

The gas phase fluid pipe control valve 310 is not limited because it can be made of a variety of control valve means, if it can control the gas phase fluid flowing through the gas phase fluid pipe 300, the gas phase fluid control valve 310 is a In addition to flow control, a sensor may be further provided to measure the flow rate of the gaseous fluid.

In addition, the fluid tank 1000 having the internal evaporator according to the first embodiment of the present invention may further include a pressure control unit 500 for controlling the pressure inside the tank body 100, pressure control unit ( 500 may include a tank pressure reducing valve 510 and a tank safety valve 520 for reducing the pressure of the tank body 100.

The pressure control unit 500 including the tank pressure reducing valve 510 and the tank safety valve 520 may discharge the gaseous fluid in the tank body 100 to the discharge unit so as to control the pressure in the tank body 100. have.

Second Embodiment

5 is a view showing a fluid tank having an internal evaporator according to a second embodiment of the present invention, Figure 6 is another view showing a fluid tank having an internal evaporator according to a second embodiment of the present invention.

5 and 6, the converting means 200 of the fluid tank 1000 having the internal evaporator according to the second embodiment of the present invention converts the supplied liquid fluid and the heating medium into gaseous fluid. The converting means body 210, the high temperature heating medium pipe 220 to which the heating medium is supplied to the converting means body 210 from the outside, and the heating medium heat exchanged with the liquid fluid in the converting means body 210 are discharged to the outside. It is formed to surround the low temperature heating medium pipe 230 and the conversion means body 210 is made of a heat insulating means provided to insulate the conversion means body 210 and the tank body 100 inside.

To describe in more detail, the conversion means body 210 may be made of an evaporator, by heat exchange with the liquid fluid through a heating medium supplied through the high temperature heating medium pipe 220, and converts the liquid fluid into gaseous fluid , The heating medium converted to a relatively low temperature through heat exchange with the liquid fluid is discharged to the outside through the low temperature heating medium pipe 230.

At this time, the high temperature heating medium pipe 220 and the low temperature heating medium pipe 230 is a heating medium flows into the conversion means body 210 or is converted, each may be provided independently, otherwise, one heating medium circulation system The heating medium discharged through the low temperature heating medium pipe 230 may be heated to flow to the high temperature heating medium pipe 220, and the present invention is not limited thereto.

In addition, the high temperature heating medium pipe 220 may further include a high temperature heating medium control valve 221 for controlling the supply of the heating medium.

As described above, the conversion means body 210 is located inside the tank body 100, the temperature is increased in accordance with the inflow of the heating medium, the heat insulating to minimize the influence on the liquid fluid stored inside the tank body 100 Means may be provided.

As an embodiment of the heat insulating means may be a first heat insulating means 241 made of a heat insulating material, as shown in FIG.

The first heat insulating means 241 is made of a heat insulating material, it is possible to prevent the heat energy by the heating medium in the change means body 210 to be transferred to the liquid fluid stored in the tank body 100.

At this time, the heat insulating material of the first heat insulating means 241 can be made of various heat insulating materials, if it can prevent the heat energy from the conversion means body 210 is transferred to the liquid fluid stored in the tank body 100, of course. to be.

Another embodiment of the heat insulating means 240 may be a second heat insulating means 242 made of a vacuum means that can form the outer peripheral surface of the conversion means body 210 in a vacuum, as shown in FIG.

The second heat insulating means 242 is composed of a vacuum means to maintain the outer circumference of the conversion means body 210 in a vacuum state, so that the heat energy by the heating medium in the conversion means body 210 is stored in the tank body 100 It can be prevented from being delivered to the fluid.

The vacuum means constituting the second insulation means 242 may be configured by various means such as a vacuum chamber, a vacuum insulation jacket.

That is, the fluid tank 1000 having the internal evaporator according to the second embodiment of the present invention includes a heat insulating means consisting of the first heat insulating means 241 or the second heat insulating means 242, the conversion means body 210 It is possible to prevent the transfer of heat energy generated by the heating medium in the liquid phase to the liquid fluid, thereby preventing the liquid fluid from being converted into the gas phase by maintaining the drooping temperature, and minimizing the energy loss for maintaining the fluid in the liquid state. have.

In addition, the converting means 200 of the fluid tank 1000 having an internal evaporator according to the second embodiment of the present invention supports the support 250 provided to support the converting means body 210 inside the tank body 100. It may further include.

The shape of the support 250 is not limited, but the position of the conversion means body 210 in the tank body 100 is easy to be fixed, and is formed to facilitate attachment and detachment with the conversion means body 210 for maintenance. It is desirable to.

In addition, the tank body 100 is detached from the support 250 for the maintenance of the conversion means body 210 made of an evaporator, etc., and comprises a maintenance opening 110 for repair or replacement thereof.

Since the maintenance opening 110 is formed to be openable and open, the conversion means 200 may be moved to the outside by opening, thereby facilitating maintenance or replacement of the conversion means 200.

The shape of the maintenance opening 110 is not limited, but, of course, it must be larger than the size of the conversion means 200 to facilitate insertion and withdrawal of the conversion means 200 into the tank body 100. Of course, it should be formed in a structure that can prevent the leakage of the liquid or gaseous fluid stored in the main body 100.

Third Embodiment

7 is a view showing a fluid tank having an internal evaporator according to a third embodiment of the present invention, Figure 8 is another view showing a fluid tank having an internal evaporator according to a third embodiment of the present invention.

7 and 8, the converting means 200 of the fluid tank 1000 having the internal evaporator according to the third embodiment of the present invention may introduce external gas into the high temperature heating medium pipe 220. It further includes an exhaust gas pipe (260).

That is, when the operation of the fluid tank stops without sending the gaseous fluid to the place of use, since the heating medium remains in the conversion means 200, in order to minimize the effect on the liquid fluid stored in the tank body 100, the heating medium Should be removed.

To this end, the converting means 200 of the fluid tank 1000 having the internal evaporator according to the third embodiment of the present invention provides an exhaust gas pipe 260 that can supply external gas to the high temperature heating medium pipe 220. By including, by discharging the heating medium to the outside through the low-temperature heating medium pipe 230 through the gas supplied from the outside, it is possible to minimize the influence on the liquid fluid by the heating medium.

In addition, the exhaust gas pipe 260 further includes an exhaust gas control valve 261 that can control an external gas introduced into the high temperature heating medium pipe 220.

That is, the fluid tank 1000 having the internal evaporator according to the third embodiment of the present invention locks the exhaust gas control valve 261 during operation to prevent external gas from flowing into the high temperature heating medium pipe 220. When the operation of the fluid tank 1000 is stopped, the external gas flows to the high temperature heating medium pipe 220 to be discharged together with the heating medium through the low temperature heating medium pipe 230, thereby converting the body 210 into the body. It is possible to minimize the effect on the liquid fluid by quickly removing the remaining heating medium in the

[Description of the code]

1000: fluid tank with internal evaporator

100 tank body

200: conversion means

210: conversion means body

220: high temperature heating medium piping

221: high temperature heating medium control valve

230: Low temperature heating medium piping

241: first insulation means

242: second insulation means

250: support

260: exhaust gas piping

261 exhaust gas control valve

300: meteorological fluid piping

310: meteorological fluid piping control valve

400: delivery means

500: pressure control unit

510: tank pressure reducing valve

520 tank safety valve

Claims

Tank body 100 in which the liquid fluid is stored;

A conversion means (200) provided inside the tank body (100) to supply a liquid fluid and converting the liquid fluid into a gaseous fluid by exchanging a heating medium supplied from the outside with the liquid fluid; And

Supplying the liquid to the liquid inside the tank body 100 to the conversion means 200, the gaseous fluid converted by the conversion means 200 is provided to send to the external use place through the gaseous fluid pipe 300 Means (400); comprising a fluid tank having an internal evaporator.
The method of claim 1,

The gas fluid pipe 300 is

A fluid tank having an internal evaporator comprising a gas phase fluid piping control valve 310 capable of controlling gaseous fluid flowing to the place of use.
The method of claim 1,

The fluid tank 1000 is

And a pressure control unit (500) including a tank pressure reducing valve (510) and a tank safety valve (520) capable of controlling the pressure inside the tank body (100).
The method of claim 1,

The conversion means 200 is

A conversion means body 210 which receives a heating medium and converts a liquid fluid into a gaseous fluid;

A high temperature heating medium pipe 220 through which a heating medium is supplied to the conversion means body 210 from the outside;

Low temperature heating medium pipe 230 for discharging the heating medium heat exchanged with the liquid fluid in the conversion means body 210 to the outside and

And a heat insulating means provided to insulate the converting means body 210, the fluid tank having an internal evaporator.
The method of claim 4, wherein

The insulation means

The first heat insulating means 241 made of a heat insulating material on the outer circumference of the converting means body 210 or the second heat insulating means 242 made of vacuum means to keep the outer circumference of the converting means body 210 in a vacuum state. Fluid tank with evaporator.
The method of claim 4, wherein

The conversion means 200 is

It is provided so as to be detachable from the conversion means body 210, and further comprising a support (250) for fixing the conversion means body (210) inside the tank body (100), the fluid tank having an internal evaporator.
The method of claim 6,

The tank body 100 is

A fluid tank having an internal evaporator, including a maintenance opening 110 provided to be openable.
The method of claim 4, wherein

The conversion means 200 is

Further comprising a discharge gas pipe 260 for introducing an external gas into the high temperature heating medium pipe 220,

The exhaust gas pipe (260) includes a discharge gas control valve (261) for controlling the outside gas flowing into the high temperature heating medium pipe 220, fluid tank having an internal evaporator.