WO2020009382A1

WO2020009382A1 - Fluid tank comprising internal pressurizer

Info

Publication number: WO2020009382A1
Application number: PCT/KR2019/007912
Authority: WO
Inventors: 박훈진; 박근오
Original assignee: 주식회사래티스테크놀로지
Priority date: 2018-07-02
Filing date: 2019-06-28
Publication date: 2020-01-09
Also published as: KR102101216B1; CN112384730B; KR20200003671A; EP3812642A1; JP2021529292A; EP3812642A4; JP7126023B2; CN112384730A

Abstract

The present invention relates to a fluid tank comprising an internal pressurizer and, more particularly, to a fluid tank capable of storing a liquid fluid such as liquefied natural gas, heating a part of the liquid fluid to generate an evaporation gas, and, through the resulting pressurization, sending the liquid fluid to the outside, wherein the fluid tank comprises an internal pressurizer which is excellent in safety and capable of quickly pressurizing the fluid tank.

Description

Fluid tank with internal pressurizer

The present invention relates to a fluid tank including an internal pressurizer, and more particularly, a liquid fluid such as liquefied natural gas may be stored, but a part of the liquid fluid is heated to generate an evaporation gas, and thus the liquid fluid is pressurized. It relates to a fluid tank including an internal pressurizer capable of sending out to the outside.

1 is a view showing a conventional fluid tank 10.

The conventional fluid tank 10 includes a tank body 1 capable of storing a liquid fluid such as liquefied natural gas. At this time, in order to send the liquid fluid stored in the tank body 1 to the outside by pressing the inside of the tank body 1, the liquid fluid is sent to the outside through the delivery pipe (5).

The conventional fluid tank 10 has a pressurizing means (3) such as an evaporator provided outside the tank body (1), and the lower pipe (2) connecting the tank body (1) and the pressurizing means (3) The liquid fluid is supplied to the pressurizing means 3 through the pressurization means 3, and the pressurizing means 3 evaporates the liquid fluid through an operation such as an evaporator to form an evaporation gas, and the tank body 1 through the upper pipe 4. By supplying to the furnace, the tank body 1 is pressurized.

That is, by supplying a part of the liquid fluid stored in the tank main body 1 to the pressurizing means 3, pressurizing the inside of the tank main body 1 through the evaporation gas generated through the operation of the pressurizing means 3, The liquid fluid is sent out.

At this time, since the conventional fluid tank 10 must supply the liquid fluid to the pressurizing means (3), in order to supply a smooth liquid fluid, the lower pipe (2) is connected to the lower part of the tank body (1), and the pressurizing means through this. (3) to supply a liquid fluid. However, in the above-described configuration, there is a fear that the fluid leaks from the connection portion between the lower part of the tank body 1 and the lower pipe 2.

This is when the liquid fluid stored in the fluid tank 10 is a cryogenic liquefied natural gas, there is a fear of explosion due to cryogenic brittleness and fire, there is a risk of safety accidents of the user.

In addition, the pressurizing means (3) is provided on the outside of the tank body (1), and the liquid or gaseous fluid flows through the lower pipe (2) and the upper pipe (4), etc., so that the pressurizing means (3) outside In addition to the need for a space to be provided in addition to the control means for the control of the fluid flowing around the pressurizing means (3) and the like, since the manufacturing cost and manufacturing time of the fluid tank 10 is increased There is a problem.

The present invention has been made to solve the problems as described above, the object of the present invention is to store a liquid fluid, such as liquefied natural gas, heating a portion of the liquid fluid to generate an evaporation gas, accordingly pressurized In the fluid tank that can send the liquid fluid to the outside through, it is to provide a fluid tank including not only excellent safety, but also an internal pressurizer that can quickly pressurize the fluid tank.

A fluid tank including an internal pressurizer according to the present invention includes a tank body 100 in which a liquid fluid is stored; It is formed through the tank body 100 in a selected position in the vertical direction, the lower side is selected, the pressure pipe 200 is located on the liquid fluid; Pressurizing means (300) for pressurizing the inside of the tank main body (100) by evaporating the liquid fluid contained in the pressurizing pipe (200); And a discharging pipe 400 installed at a lower side of the tank main body 100 so that the liquid fluid is introduced into the tank main body 100 so that the liquid fluid stored in the tank main body 100 can be discharged to the outside. It is done.

In addition, the pressure tube 200 is characterized in that the selected upper side is located above the liquid fluid stored in the tank body 100.

In addition, the pressurizing means 300 is characterized by consisting of any one or more means selected from a heating means using electrical energy, a heating means for heat exchange through a heating medium in the gas phase, a heating means for heat exchange through a liquid heating medium. It is done.

In addition, the pressure pipe 200 is formed of a heat insulating material, characterized in that formed by heat treatment.

In addition, the tank body 100 further includes a fluid remaining portion 110 which protrudes downward in correspondence with the position of the pressure pipe 200, the pressure pipe 200 is the fluid remaining portion ( Corresponding to 110, it is characterized in that it is formed extending in the lower direction.

The fluid tank including the internal pressurizer according to the present invention operates in the tank body to pressurize a liquid fluid, such as liquefied natural gas, so there is no fear of leakage of the liquid fluid.

In addition, since the fluid tank including the internal pressurizer according to the present invention does not need an external pressurization means for pressurizing the liquid fluid, it is excellent in space utilization, and also for flowing the liquid in the liquid phase and the gas phase through the pressurization means. Since there is no need to additionally provide a valve for piping and flow control, there is an advantage of reducing the manufacturing cost and manufacturing time of the fluid tank.

In addition, the fluid tank including the internal pressurizer according to the present invention has an advantage that the pressurization for the delivery of the liquid fluid is quickly generated by selectively heating the liquid fluid to generate an evaporation gas.

1 is a view showing a conventional fluid tank

2 is a view showing a fluid tank including an internal pressurizer according to the first embodiment of the present invention.

3 is yet another view showing a fluid tank including an internal pressurizer according to a first embodiment of the present invention

4 is a view showing a fluid tank including an internal pressurizer according to a second embodiment of the present invention.

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

2 is a view showing a fluid tank including an internal pressurizer according to a first embodiment of the present invention, Figure 3 is another view showing a fluid tank including an internal pressurizer according to a first embodiment of the present invention.

2 and 3, the fluid tank 1000 including the internal pressurizer according to the first embodiment of the present invention includes a tank body 100 in which a liquid fluid is stored and accommodated, and the tank body 100. It is formed to be able to send the liquid fluid stored inside through the pressurization to the outside (fluid demand destination).

At this time, the liquid fluid for storage and delivery in the fluid tank 1000 including the internal pressurizer according to the first embodiment of the present invention is liquefied natural gas (LNG), in addition to the liquefied natural gas in the tank body 100 If stored and can be sent to the outside by pressurization is possible embodiments of various liquid fluids, such as liquefied hydrogen gas.

The fluid tank 1000 including the internal pressurizer according to the first embodiment of the present invention is provided in the tank main body 100 and the tank main body 100 in which a liquid fluid such as liquefied natural gas is stored. It is provided in the pressure tube 200, the pressure tube 200 is formed to be accommodated by heating the liquid fluid, the pressure means 300 and the pressure means 300 that is provided to pressurize the inside of the tank body 100 It comprises a delivery pipe 400 is formed to be able to send the liquid fluid to the outside in accordance with the pressure of the tank body 100 by the.

That is, in the fluid tank 1000 including the internal pressurizer according to the first embodiment of the present invention, the pressurizing means 300 heats the liquid fluid contained in the pressurization tube 200 to form an evaporation gas, By pressurizing the inside of the tank body 100 according to the formation, it is possible to send the liquid fluid stored in the fluid tank 100 to the outside through the delivery pipe 400 by its pressure.

In more detail, the tank body 100 may be a tank for various uses, such as a general tank in which a liquid fluid is stored, a vehicle fuel tank, a fuel tank of a ship, a tank lorry, and the like.

The pressure tube 200 is formed in a shape that penetrates in the vertical direction at a position selected inside the tank body 100. Pressurized tube 200 is formed in a hollow shape in the vertical direction, a portion of the liquid fluid stored in the tank body 100 is accommodated, it can be pressed through the pressing means (300).

The pressurizing means 300 is located in the hollow of the pressurizing pipe 200 and heats the liquid fluid contained in the pressurizing pipe 200 to form an evaporation gas, thereby making it possible to pressurize the inside of the tank body 100.

The pressurizing means 300 may be composed of various means for heating the liquid fluid contained in the pressurizing pipe 200. For example, the pressurizing means 300 may be heated to evaporate the liquid fluid contained in the pressurizing pipe 200 through the supply of electric energy. It can be made by means capable of forming a gas.

Another example of the pressurizing means 300 consists of a means for heating the liquid fluid through heat exchange with the liquid fluid in the tank body 100 using a heating medium in a gas phase or a liquid heating medium, thereby forming an evaporation gas. In addition, various pressurization means are possible, such as to pressurize the inside of the tank main body 100 through the evaporation gas and to transmit the liquid fluid stored in the tank main body 100.

At this time, the pressure pipe 200 is heated by the pressurizing means 300 to press the tank body 100 by heating the liquid fluid contained in the hollow inside, is formed of a heat insulating material or heat insulation treatment for the heating efficiency of the liquid fluid It is desirable to be.

In addition, the pressure pipe 200 is selected to be formed on the lower side is located on the liquid fluid so that the liquid fluid flows from the bottom to be heated, as well as the evaporation gas formed by the pressing means 300 tank body ( 100) Since the pressurization of the tank main body 100 is efficient only when it is supplied onto the gaseous phase fluid inside, it is preferable that the selected upper side is formed to be located above the liquid phase fluid.

The discharge pipe 400 is provided with an inlet so that the liquid fluid flows into the lower side of the tank body 100, and is formed to be able to send the liquid fluid stored in the tank body 100 to the outside.

The delivery pipe 400 preferably has an inlet through which the liquid fluid flows in such a way that it can be sent to the outside even if the flow rate of the liquid fluid is small.

As described above, the fluid tank 1000 including the internal pressurizer according to the first embodiment of the present invention heats the liquid fluid using the pressurizing means 300, and the tank body through the evaporation gas generated by the heating. (100) By pressurizing the inside, since the liquid fluid contained in the tank body 100 can be sent to the outside, the storage of the liquid fluid safer than the prior art to pressurize the tank body in accordance with its operation by having an evaporator on the outside and There is an advantage that can be sent.

That is, in the method of pressurizing the evaporator to the outside, the fluid inside the tank main body must be supplied to the evaporator, so most of the tank main body is located under the tank main body, and there is a risk of fluid leakage from the tank main body. While there is a problem of exposure to the risk, the fluid tank 1000 including the internal pressurizer according to the first embodiment of the present invention heats the liquid fluid inside the tank body 100 without moving the fluid stored therein, There is an advantage that the risk of leakage of fluid is reduced.

In addition, the fluid tank 1000 including the internal pressurizer according to the first embodiment of the present invention does not need to include an additional pipe, a valve for controlling a fluid moving through the pipe, etc. provided with an external evaporator. The manufacturing cost and manufacturing time of the fluid tank 1000 can be shortened.

In addition, the fluid tank 1000 including the internal pressurizer according to the first embodiment of the present invention is not a method of heating the entire liquid fluid contained in the tank main body 100, but a liquid fluid contained in the pressure tube 200. By heating to pressurize the inside of the tank body 100, there is an advantage that can shorten the time for heating the fluid to form the evaporation gas.

In addition, referring to Figure 3, the pressure tube 200 is formed at a right angle to the vertical direction to increase the accuracy for heating the liquid fluid, it is preferable to accommodate the liquid fluid therein, the shape or position of the heating means 300 According to the shape or purpose of the tank body 100, a liquid fluid is introduced into and received from the bottom, and the evaporator gas formed by heating is discharged to the top to press the inside of the tank body 100, thereby enabling various shapes. Do.

Second Embodiment

Referring to FIG. 4, the tank body 100 of the fluid tank 1000 including the internal pressurizer according to the second embodiment of the present invention protrudes downward in correspondence to the position where the pressure pipe 200 is formed, thereby providing a groove. It may further include a fluid remaining portion 110 to form a.

In addition, the pressure tube 200 is formed to extend to the fluid remaining portion 110, it is formed to accommodate the liquid fluid contained in the fluid remaining portion 110 therein.

That is, when the amount of the liquid fluid contained in the tank body 100 is not large, it is difficult to be accommodated into the pressure tube 200, which is not easy to heat in the pressure tube 200, the tank body 100 Internal pressurization may be difficult.

To this end, the fluid tank 1000 according to the second embodiment of the present invention includes the fluid remaining part 110 in the tank body 100 so as to preferentially store the liquid fluid stored in the tank body 100. It is possible to facilitate the liquid-liquid heating inside the pressure tube (200).

In addition, the fluid remaining portion 110 is preferably to accommodate the liquid fluid of the maximum flow rate, but since the pressure tube 200 is to be extended and positioned, it should be formed larger than the diameter of the minimum pressure tube (200) Of course.

[Description of the code]

1000: fluid tank including internal pressurizer

100 tank body

110: fluid remaining part

200: pressure tube

300: pressurizing means

400: discharge pipe

Claims

Tank body 100 in which the liquid fluid is stored;

It is formed through the tank body 100 in a selected position in the vertical direction, the lower side is selected, the pressure pipe 200 is located on the liquid fluid;

Pressurizing means (300) for pressurizing the inside of the tank main body (100) by evaporating the liquid fluid contained in the pressurizing pipe (200); And

Including an inlet is installed so that the liquid fluid is introduced into the lower side of the tank body 100, the discharge pipe 400 is formed to be able to send out the liquid fluid stored in the tank body 100; Fluid tank comprising a.
The method of claim 1,

The pressure tube 200 is

Selected upper side is located above the liquid fluid stored in the tank body 100, the fluid tank including an internal pressurizer.
The method of claim 1,

The pressing means 300 is

A fluid tank comprising an internal pressurizer comprising at least one selected from a heating means using electrical energy, a heating means for heat exchange through a heating medium in a gas phase, and a heating means for heat exchange through a liquid heating medium.
The method of claim 1,

The pressure tube 200 is

A fluid tank including an internal pressurizer, which is formed of a heat insulating material or formed by heat insulation.
The method of claim 1,

The tank body 100 is

Further comprising a fluid remaining portion 110 is formed to protrude in a lower direction corresponding to the position of the pressure tube 200,

The pressurizing pipe (200) is a fluid tank including an internal pressurizer is formed to extend in the lower direction corresponding to the fluid remaining portion (110).