KR20150114196A - Atmospheric Vaporizing System for Liquified Petroleum Gas - Google Patents

Atmospheric Vaporizing System for Liquified Petroleum Gas Download PDF

Info

Publication number
KR20150114196A
KR20150114196A KR1020140038475A KR20140038475A KR20150114196A KR 20150114196 A KR20150114196 A KR 20150114196A KR 1020140038475 A KR1020140038475 A KR 1020140038475A KR 20140038475 A KR20140038475 A KR 20140038475A KR 20150114196 A KR20150114196 A KR 20150114196A
Authority
KR
South Korea
Prior art keywords
liquefied petroleum
petroleum gas
liquid
gas
phase
Prior art date
Application number
KR1020140038475A
Other languages
Korean (ko)
Other versions
KR101575028B1 (en
Inventor
전승채
Original Assignee
전승채
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 전승채 filed Critical 전승채
Priority to KR1020140038475A priority Critical patent/KR101575028B1/en
Priority to PCT/KR2014/012520 priority patent/WO2015152496A1/en
Publication of KR20150114196A publication Critical patent/KR20150114196A/en
Application granted granted Critical
Publication of KR101575028B1 publication Critical patent/KR101575028B1/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/054—Size medium (>1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0382—Constructional details of valves, regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/033—Small pressure, e.g. for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/035—High pressure, i.e. between 10 and 80 bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0304—Heat exchange with the fluid by heating using an electric heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0302—Heat exchange with the fluid by heating
    • F17C2227/0309—Heat exchange with the fluid by heating using another fluid
    • F17C2227/0316—Water heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0337—Heat exchange with the fluid by cooling
    • F17C2227/0341—Heat exchange with the fluid by cooling using another fluid
    • F17C2227/0344—Air cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0388—Localisation of heat exchange separate
    • F17C2227/0393—Localisation of heat exchange separate using a vaporiser

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The present invention relates to a liquefied petroleum gas storage tank in which liquefied petroleum gas is stored; An atmospheric evaporation unit for vaporizing the liquid liquefied petroleum gas; A liquid discharge pipe having one end connected to the liquefied petroleum gas storage tank for discharging the liquid liquefied petroleum gas from the liquefied petroleum gas storage tank; A gas phase discharge pipe having one end connected to the liquefied petroleum gas storage tank for discharging vapor-phase liquefied petroleum gas from the liquefied petroleum gas storage tank; A liquid phase decompression unit provided at the other end of the liquid phase discharge pipe to decompress the pressure of the liquid phase liquefied petroleum gas; A vaporizing portion connection pipe provided to supply the liquid phase liquefied petroleum gas decompressed in the liquid phase decompression portion to the atmospheric vaporization portion; A gas-phase flow regulating valve provided between the other end of the gas-phase exhaust pipe and the vaporizing portion connecting pipe to regulate the flow rate of the gas-phase liquefied petroleum gas flowing from the gas-phase exhaust pipe to the vaporizing portion connecting pipe in accordance with the pressure of the gas- Part; And a control unit.

Figure P1020140038475

Description

{Atmospheric Vaporizing System for Liquefied Petroleum Gas}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for vaporizing liquefied petroleum gas, and more particularly, to a system for vaporizing liquefied petroleum gas by discharging gaseous liquefied petroleum gas from a storage tank to lower the temperature of the liquefied petroleum gas in the storage tank, And to a standby type vaporization system for liquefied petroleum gas capable of obtaining a wider heat transfer area required for vaporization of liquid liquefied petroleum gas and a higher temperature deviation with the atmosphere.

Generally, in order to increase the volume of gas such as liquefied petroleum gas (LPG), the gaseous state is concentrated to a high pressure to be liquefied in a liquid state.

A conventional technique for using liquefied petroleum gas in this manner will be described.

(1) When there is no separate vaporizer

FIG. 1 shows an example of using LPG in a small business area such as a restaurant.

The liquefied petroleum gas is stored in the LPG gas cylinder 1, and the customer uses the gas-phase liquefied petroleum gas directly above the inside of the LPG gas cylinder 1. That is, when the inside of the LPG gas cylinder 1 is maintained at a predetermined pressure, liquid liquefied petroleum gas is stored therein, and a certain amount of gaseous liquefied petroleum gas is present thereon. The petroleum gas is used directly, so that a separate vaporizer is not required.

When the vaporized liquefied petroleum gas in the LPG gas cylinder 1 flows out to the outside, the liquefied petroleum gas is vaporized by the amount of the vaporized liquefied petroleum gas exiting from the inside of the LPG gas cylinder 1 to maintain the internal steam pressure, The heat of the liquid liquefied petroleum gas is lowered due to the heat of vaporization due to the heat of vaporization. When the temperature of the liquefied petroleum gas is lowered, As a result, the temperature becomes lower than the boiling point with respect to the internal pressure, and the vaporization becomes impossible finally.

In this method, since sufficient heat transfer area can not be secured by the LPG gas cylinder 1 itself, sufficient heat exchange is not possible, and as a result, the temperature of the liquefied petroleum gas is lowered, resulting in only a small amount of vaporization. In particular, when the outside air temperature is low as in winter, the vaporization ability is further weakened.

Therefore, this method is used only at small-scale business sites, and can not be applied to customers who use large amounts of liquefied petroleum gas.

(2) When equipped with a standby type vaporizer

Figure 2 shows an atmospheric vaporizer used in the case where the storage temperature of liquefied gas is very low, such as LNG.

After the liquefied gas in the liquid storage tank 1 flows out to the outside, it is vaporized while passing through the atmospheric vaporizer 2, and the vaporized gas is used by the customer.

Such a method can be applied when there is a sufficient temperature deviation between the liquefied gas and the atmosphere.

That is, liquefied gas such as LNG stored at cryogenic temperature is not a problem in vaporization ability due to sufficient temperature deviation in the air even in winter. However, in case of liquefied petroleum gas stored at 7 bar and 12 ° C like LPG, Since it may be lower than the temperature of the liquefied petroleum gas, it is difficult to use the atmospheric vaporization apparatus in the case of the winter season and there is a problem that it is difficult to use the liquefied petroleum gas and the outside air because there is almost no temperature deviation between the liquefied petroleum gas and the outside air.

However, there is an advantage in that the standby type vaporization device does not require a separate maintenance cost.

Such an atmospheric evaporation apparatus is an important technical factor for the temperature deviation between the liquefied gas and the atmosphere, the heat transfer area, and the like.

(3) When equipped with an electrothermal heater type vaporizer

FIG. 3 shows an electrothermal heater type vaporizer for vaporizing and using liquefied petroleum gas stored at relatively high temperatures such as LPG.

Liquid liquefied petroleum gas inside the liquefied storage tank 1 is discharged to the outside and then vaporized through the electrothermal heater type vaporization apparatus 2 and then the vaporized gas is used.

At this time, the electrothermal heater type vaporization apparatus 2 includes a water tank 3 containing water for heat transfer, a heater 4 for heating the water, and the like. That is, when the heater device 4 operated by electricity or the like generates heat, the water 3 is heated and the liquid liquefied petroleum gas is vaporized by the heat of the water 3.

In the case of such an electrothermal heater type vaporization apparatus, electricity is required for the operation of the heater device 4, so energy is wasted, and the heat exchange coil for liquefied petroleum gas that is immersed in the water 3 comes into contact with the water 3, There arises a problem that the heat exchange coil for liquefied petroleum gas must be exchanged at a period of 2 to 3 years.

As described above, in the case of (1), the vaporized liquefied petroleum gas is directly used and a separate vaporizing device is unnecessary. In the case of (2) and (3), however, a separate vaporizing device is required because the liquid liquefied gas is used.

In the case of the systems (2) and (3), only the liquefied gas in the liquid phase is used, and no liquefied gas in the gas phase is used. However, in case that the pressure of the liquefied gas in the gas phase rises abnormally, .

Korean Patent Publication No. 10-2011-0097056 Korean Patent No. 10-1183214 Korea Utility Model Registration No. 20-0302865

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a standby type vaporization apparatus for liquefied petroleum gas, And to provide a standby type vaporization system for liquefied petroleum gas which can improve the performance of the atmospheric vaporization system because the temperature deviation and the heat transfer area can be ensured.

In order to solve the above problems, the present invention provides a liquefied petroleum gas storage tank in which liquefied petroleum gas is stored; An atmospheric evaporation unit for vaporizing the liquid liquefied petroleum gas; A liquid discharge pipe having one end connected to the liquefied petroleum gas storage tank for discharging the liquid liquefied petroleum gas from the liquefied petroleum gas storage tank; A gas phase discharge pipe having one end connected to the liquefied petroleum gas storage tank for discharging vapor-phase liquefied petroleum gas from the liquefied petroleum gas storage tank; A liquid phase decompression unit provided at the other end of the liquid phase discharge pipe to decompress the pressure of the liquid phase liquefied petroleum gas; A vaporizing portion connection pipe provided to supply the liquid phase liquefied petroleum gas decompressed in the liquid phase decompression portion to the atmospheric vaporization portion; A gas-phase flow regulating valve provided between the other end of the gas-phase exhaust pipe and the vaporizing portion connecting pipe to regulate the flow rate of the gas-phase liquefied petroleum gas flowing from the gas-phase exhaust pipe to the vaporizing portion connecting pipe in accordance with the pressure of the gas- Part; And a control unit.

The liquid flow rate regulator is provided between the vaporizing portion inlet pipe and the liquid pressure reducing portion, and the liquid flow rate regulator is controlled by the liquid flow rate regulator by the first buoyant, which is moved up and down according to the liquid level of the liquid liquefied gas. It is preferable that the amount of the liquid liquefied gas is controlled.

The liquid leakage preventing device may include a casing having an inlet formed at a lower portion thereof and an outlet formed at an upper portion thereof, and a second portion provided inside the casing, wherein the liquid leakage preventing device is provided at a rear end of the atmospheric evaporation portion, An outlet port closing member provided at an upper portion of the second buoyant member to cover the outlet port when the second buoyant member moves upward, and a closing member pushing bar provided at an upper portion of the casing, have.

As described above, according to the present invention, it is possible to use the atmospheric vaporization apparatus for liquefied petroleum gas even at low atmospheric temperatures as in the winter, and it is possible to secure sufficient temperature deviation and heat transfer area while taking advantage of the atmospheric vaporization apparatus, The performance of the vaporization system can be enhanced.

That is, the present invention relates to a method and an apparatus for vaporizing a liquid-phase liquefied petroleum gas naturally occurring in a liquefied petroleum gas storage tank, lowering the temperature of the liquid-phase liquefied petroleum gas in the liquefied petroleum gas storage tank, The vaporization capability of the atmospheric vaporization system for liquefied petroleum gas can be greatly increased by the vaporization of the petroleum gas, and it becomes possible to replace the conventional electric heater type vaporization apparatus using electricity.

FIGS. 1 to 3 conceptually illustrate a conventional method of using liquefied petroleum gas,
4 is a conceptual diagram of a standby type vaporization system for liquefied petroleum gas, which is an embodiment of the present invention,
Fig. 5 is an enlarged view of the liquid phase decompression section, the liquid phase flow rate regulator, and the gas phase flow rate regulator of Fig.
6A and 6B are enlarged views of the liquid flow rate adjusting portion of FIG. 5,
Figs. 7A and 7B are enlarged views of the vapor-phase flow rate regulating section of Fig. 5,
8A and 8B are enlarged views of the liquid leakage preventing device of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention in the drawings, portions not related to the description are omitted, and like reference numerals are given to similar portions throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

FIG. 4 is a conceptual diagram of an atmospheric vaporization system for liquefied petroleum gas, which is an embodiment of the present invention, FIG. 5 is an enlarged view of the liquid phase decompression unit, the liquid phase flow rate control unit and the gas phase flow rate control unit of FIG. FIG. 7A and FIG. 7B are enlarged views of the vapor-phase flow rate regulating section of FIG. 5, and FIGS. 8A and 8B are enlarged views of the liquid leakage preventing device of FIG.

Hereinafter, the detailed description will be omitted for the packing members, bolts, nuts, etc., which are necessary for assembly and sealing of the components, and the very common members will be omitted.

The present system mainly includes a liquefied petroleum gas storage tank 100, a liquid discharge pipe 110, a gas discharge pipe 120, a liquid pressure reducing unit 130, a liquid flow control unit 140, a gas flow control unit 150, A vaporizing portion coupling tube 160, an atmospheric vaporizing portion 300, a liquid leakage preventing device 400, and the like.

First, the system will be described with reference to FIG.

The liquefied petroleum gas is stored in the liquefied petroleum gas storage tank 100 and the liquid liquefied petroleum gas and the liquid liquefied petroleum gas are evaporated in the liquefied petroleum gas storage tank 100, do.

Generally, when the ambient temperature is 12 ° C, the internal pressure of the LPG is maintained at about 7 bar.

One end of the liquid phase discharge pipe 110 is connected to the liquefied petroleum gas storage tank 100 to discharge the liquid liquefied petroleum gas from the liquefied petroleum gas storage tank 100, One end of the vapor discharge pipe 120 is connected to the liquefied petroleum gas storage tank 100 to discharge the petroleum gas.

Of course, one end of the liquid discharge pipe 110 is connected to a lower portion of the liquefied petroleum gas storage tank 100 so that liquid liquefied petroleum gas can be introduced, and one end of the gas discharge pipe 120 can receive liquefied petroleum gas To the upper portion of the liquefied petroleum gas storage tank 100.

The liquid phase decompression unit 130 is provided at the other end of the liquid phase exhaust pipe 110. The liquid depressurization unit 130 shown in FIG. 5 and the like is a type of depressurization valve, and the depressurization valve is a very general technique, and a detailed description thereof will be omitted.

A pressure reducing valve refers to a valve that depressurizes the liquid when the pressure of the liquid is higher than the intended use, and also maintains the depressurized pressure constant.

The pressure reducing valve of the present embodiment can maintain the pressure of the secondary side (i.e., the pressure after the pressure reduction) at about 2 bar (this pressure can be adjusted according to the embodiment, of course).

The pressure reducing valve is a very general technology and is not limited to the drawings of the present embodiment, and a very wide variety of valves can be used, and thus a detailed description thereof will be omitted.

A liquid flow rate regulator 140 is provided at the rear end of the liquid phase decompression unit 130.

The liquid flow rate regulator 140 controls the amount of the liquid phase liquefied petroleum gas to be supplied to the atmospheric gasification unit 300, that is, the excessive amount of the liquid phase liquefied petroleum gas flows out from the liquefied petroleum gas storage tank 100 .

The structure of the liquid flow rate regulator 140 will be described later.

A vaporizing portion connecting pipe 160 is provided at a rear end of the liquid flow rate adjusting portion 140.

The vaporizing portion connecting pipe 160 is provided to supply the liquid phase liquefied petroleum gas decompressed in the liquid phase decompression portion 130 to the atmospheric vaporization portion 300.

Meanwhile, the vaporization unit connection pipe 160 is connected to the other end of the vapor phase discharge pipe 120 via the vapor phase flow rate control unit 150.

That is, the vaporizing portion connecting pipe 160 also has a role of supplying the gas-phase liquefied petroleum gas supplied from the gas-phase discharge pipe 120 to the atmospheric vaporizing unit 300.

The gas-phase flow rate regulator 150 is connected to the gas-phase discharge pipe 120 in accordance with the pressure of the gas-phase liquefied petroleum gas in the gas-phase discharge pipe 120 (which is substantially the same as the pressure of the gaseous liquefied petroleum gas in the liquefied- The amount of vaporized liquefied petroleum gas supplied to the vaporized portion connecting pipe 160 is controlled.

The gas flow rate regulator 150 according to the present embodiment includes a first body 151 having a first through hole 151a formed along a center thereof and an inner protrusion 151b protruding inward on one side of the first through hole 151a A sliding tube 152 which is slid along the inner surface protrusion 151b of the first body 151 and has a plurality of second through holes 152a formed on one side thereof, And a compression spring 154 for elastically supporting the sliding tube 152. The sealing member 153 is formed of a sealing member 153,

A plurality of second through holes 152a are formed along the main surface of the sliding tube 152 and a plurality of second through holes 152a are formed along the axial direction of the sliding tube 152. [

The gaseous flow rate regulator 150 closes the first through hole 151a while the sealing member 153 is brought into contact with the inner protrusion 151b by the elastic force of the compression spring 154 in the absence of external force ).

On the other hand, when the pressure of the vaporized liquefied petroleum gas becomes higher than the sum of the elastic force of the compression spring 154 and the pressure received from the liquid liquefied petroleum gas in the vaporized portion connecting pipe 160, the sliding pipe 152 moves to the left, The amount of movement of the sliding pipe 152 to the left changes according to the pressure of the petroleum gas, and thus the amount of the vapor-liquid liquefied petroleum gas flowing through the second through-hole 152a is changed (see FIG.

That is, when the pressure of the gas-phase liquefied petroleum gas increases, the amount of the gas-phase liquefied petroleum gas supplied to the vaporizing portion connecting pipe 160 increases. When the pressure of the gas-phase liquefied petroleum gas decreases, The amount of liquefied petroleum gas is reduced, and when the pressure of the gaseous liquefied petroleum gas is further lowered, the gaseous liquefied petroleum gas is no longer supplied.

Next, the liquid flow rate regulator 140 will be described.

In this embodiment, the liquid flow rate regulator 140 includes a casing 141, a first buoyant 142, a sealing rod 143, a guide tube 144, a guide plug 145, a sealing plate 146, A valve body 147, a valve spring 148, and the like.

The casing 141 is vertically long and has an outlet 141a at the bottom and an inlet 141b at the top.

The first buoyancy member 142 is provided inside the casing 141. The first buoyant material 142 floats along the liquid liquefied petroleum gas when liquid liquefied petroleum gas exists in the casing 141.

A sealing rod 143 is vertically fixed to the upper portion of the first buoyant material 142.

An inlet pipe 141b of the casing 141 is provided with a guide pipe 144 in a vertical direction.

A first flow hole 144a is formed in an upper side wall of the guide pipe 144 and a second flow hole 144b is formed in a lower side wall of the guide pipe 144. [

In addition, a valve seat surface 144c is formed inside the upper portion of the first flow hole 144a of the guide pipe 144.

A rod guide member 145 for guiding the vertical movement of the sealing rod 143 is fixed to the lower end of the guide tube 144.

A sealing plate 146 having an opening 146a formed therein is vertically provided in the guide tube 144.

The opening hole 146a of the sealing plate 146 is opened or closed by the sealing rod 143. [

A valve body 147 having a central through hole 147a is elastically supported by a valve spring 148 at an upper portion of the guide tube 144 in the vertical direction.

When there is no external force, the valve body 147 comes into contact with the valve seat surface 144c by the elastic force of the valve spring 148 to block the flow of the liquid liquefied petroleum gas.

6A, when the first buoyant material 142 rises, that is, when the level of the liquid liquefied petroleum gas in the casing 141 becomes high, the sealing rod 143 fixed to the upper portion of the first buoyant material 142, Thereby closing the opening 146a of the cap 146.

When the open hole 146a of the sealing plate 146 is blocked as described above, the valve body 147 contacts the valve seat surface 144c by the elastic force of the valve spring 148 to block the flow of the liquid liquefied petroleum gas So that further liquid liquefied petroleum gas is prevented from flowing into the casing 141.

6B, when the first buoyant 142 descends, that is, when the level of the liquid liquefied petroleum gas in the casing 141 is lowered, the sealing rod 143 fixed to the upper portion of the first buoyant material 142 And is released from the opening 146a of the sealing plate 146, and the opening 146a of the sealing plate 146 is opened.

When the open hole 146a of the sealing plate 146 is opened as described above, the liquid liquefied petroleum gas flows through the central through hole 147a of the valve body 147, the opening 146a of the sealing plate 146, The flow of the liquid liquefied petroleum gas causes a pressure difference across the valve body 147 to flow into the valve body 147 through the second flow hole 144b of the valve body 147, The liquid liquefied petroleum gas flows into the first flow hole 144a of the guide pipe 144 when the valve body 147 is separated from the valve seat surface 144c.

The liquid flow rate control unit 140 controls the amount of the liquid phase liquefied petroleum gas to be supplied to the atmospheric evaporation unit 300, that is, the amount of the liquid phase liquefied petroleum gas And serves to prevent gas from flowing out.

The liquid phase liquefied petroleum gas decompressed in the liquid phase decompression unit 130 and the gas phase liquefied petroleum gas supplied from the gas phase flow rate regulator 150 are supplied to the vaporization unit connection pipe 160 and are supplied to the atmospheric gasification unit 300 .

The atmospheric evaporation unit 300 is a very general technology for vaporizing the liquid liquefied petroleum gas by heat-exchanging with the atmosphere, so a detailed description is omitted.

In the atmospheric evaporation unit 300, vaporized liquefied petroleum gas flows through the liquid-phase liquefied petroleum gas so that vaporization of the liquid-liquefied petroleum gas occurs more actively.

In addition, a liquid leakage preventing device 400 is provided at the rear end of the atmospheric vaporizing unit 300.

The structure of the liquid leakage prevention device 400 will be described with reference to FIGS. 8A and 8B. FIG.

The liquid leakage preventing device 400 includes a casing 410, a second buoyant member 420, an outlet closing member 421, a closing member pushing bar 430, and the like.

The casing 410 has a vertically long cylinder, and has an inlet 411 formed at a lower portion thereof and an outlet 412 formed at an upper portion thereof.

The second booster member 420 is provided inside the casing 410. The second buoyant material 420 floats along the liquid liquefied petroleum gas when the liquid liquefied petroleum gas exists in the casing 410.

An outlet port closing member 421 for blocking the outlet port 412 is provided on the second booster member 420.

That is, when the second buoyant member 420 rises upward, the outlet closing member 421 closes the outlet 412. Of course, the guiding means for maintaining the posture of the second buoyant member 420 and the outlet closing member 421 are shown in the figure, but the guiding means is a general technique, and thus a detailed description will be omitted.

When the liquid liquefied petroleum gas is collected in the casing 410 and the liquid level of the liquefied petroleum gas is increased as described above, the second buoyant material 420 floats, and as a result, the outlet closure member 421 moves to the outlet 412 The liquid liquefied petroleum gas is prevented from escaping through the outflow port 412 to the outside.

On the other hand, the closing member pushing bar 430 is provided on the upper part of the casing 410, and the closing member pushing bar 430 is elastically supported by the auxiliary spring 431.

When the gaseous liquefied petroleum gas collects in the casing 410 while the outlet closing member 421 closes the outlet 412, the pressure of the gaseous liquefied petroleum gas is lower than the atmospheric pressure So that even when the level of the liquid liquefied petroleum gas is lowered, the outlet closing member 421 is still provided to prevent the outlet 412 from being blocked. By pushing the closing member pushing bar 430 downward, The outflow port 412 is opened while the outflow port closing member 421 moves downward, so that the liquefied petroleum gas in the vapor phase is normally discharged to the outside.

Hereinafter, the principle and performance of the present invention will be described in more detail by way of example. The following examples are only examples, and the operating conditions may vary according to the embodiment.

When the atmospheric evaporation unit 300 is not operated (that is, when the liquefied petroleum gas does not flow out), the inside of the liquefied petroleum gas storage tank 100 is maintained at a pressure of about 7 bar, 11.2 ° C (this is an example).

In this state, the gaseous liquefied petroleum gas is discharged through the gas discharge pipe 120. At this time, the liquefied petroleum gas in the gaseous phase is discharged to the atmospheric vaporization unit 300 through the vapor-phase flow rate regulator 150 and the vaporizer connection pipe 160 because the LP gas is relatively high in pressure.

As the gaseous liquefied petroleum gas is discharged from the liquefied petroleum gas storage tank 100, the internal pressure of the liquefied petroleum gas storage tank 100 can be gradually lowered.

For example, when the internal pressure of the liquefied petroleum gas storage tank 100 is lowered to 2 bar, the boiling point of the LPG is -25.9 ° C., that is, when the temperature of the liquefied petroleum gas is higher than -25.9 ° C., The vaporization occurs in the vaporizing chamber 100.

In this embodiment, when the liquid liquefied petroleum gas is vaporized in the atmospheric vaporizing unit 300, the liquid liquefied petroleum gas storage tank 100, the liquid discharge pipe 110, the liquid pressure reducing unit 130, And the liquid phase liquefied petroleum gas is supplied to the atmospheric vaporization unit 30 through the vaporization unit connection pipe 160 and the gasification unit connection pipe 160.

Of course, since the liquid-phase liquefied petroleum gas is supplied at a reduced pressure of 2 bar at the liquid-phase decompression unit 130, it is supplied to the atmospheric-type vaporization unit 30 at -25.9 ° C.

Since the temperature of the liquid liquefied petroleum gas at this time is -25.9 ° C, the temperature deviation between the liquid liquefied petroleum gas and the atmosphere in the atmospheric vaporizing unit 300 is at least the original temperature deviation (based on the temperature of the liquid liquefied petroleum gas at 11.2 ° C) (11.2 + 25.9) is generated as compared with the case where the temperature is raised to about 37.1 ° C.

Assuming that the atmospheric temperature is 11.2 ° C, vaporization of the normal liquid-phase liquefied petroleum gas is possible in this system, although vaporization does not occur in the conventional atmospheric vaporizer.

Assuming that the atmospheric temperature is 21.2 ° C, the temperature variation of the conventional atmospheric vaporization apparatus is only 10 ° C, but it is 47.1 ° C in the present system, so that the vaporization ability can be almost 5 times.

Also, in this system, the liquefied petroleum gas storage tank 100 in which the temperature of the liquid liquefied petroleum gas is lowered due to the discharge of the vaporized liquefied petroleum gas is utilized as the surface area and the heat exchange area with the atmosphere.

Thus, the present system can attain very high vaporization performance owing to a very high temperature variation with the atmosphere and an expanded heat exchange area compared with simply vaporizing liquid liquefied petroleum gas.

In this embodiment, 2 bar set as the reference pressure may be variously changed according to the embodiment and the like.

In order to clearly explain the advantages of the present invention, it has been described that the gas-phase liquefied petroleum gas is supplied at a pressure of 2 bar and the liquid-liquefied petroleum gas is also supplied at a pressure of 2 bar. However, The endothermic burden of the exhaust gas heat exchanger 100 is extremely high and sudden load fluctuations of the atmospheric vaporizing unit 300 may occur.

In practice, it is desirable to design the gas phase liquefied petroleum gas to be supplied at a pressure slightly higher than 2 bar, which is the pressure of the liquid liquefied petroleum gas (about 3 to 5 bar). That is, the gas-liquid liquefied petroleum gas is supplied at a pressure of about 3 to 5 bar (of course, the supply amount is changed depending on the pressure), and the liquid liquefied petroleum gas is decompressed to 2 bar while being maintained at 3 to 5 bar. The load variation of the liquid phase decompression unit 130 and the atmospheric evaporation unit 300 can be minimized. Of course, design criteria such as 3 to 5 bar, 2 bar, etc. can be variously varied depending on the embodiment.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the embodiments described above are intended to be illustrative, but not limiting, in all respects. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Liquefied petroleum gas storage tank
110: liquid phase discharge pipe 120:
130: Liquid pressure decompression unit
140: liquid flow rate regulator 141: casing
141a: Outlet 141b: Inlet
142: first buoyant material 143: sealing rod
144: guide tube 144a: first flow hole
144b: second flow hole 144c: valve seat surface
145: rod guide member 146: sealing plate
146a: opening hole 147: valve body
147a: central through hole 148: valve spring
150:
151: first body 151a: first through hole
151b: inner protrusion 152: sliding tube
152a: second through hole 153: sealing member
154: Compression spring
160: vaporizer connector
300: atmospheric vaporizer
400: liquid leakage prevention device 410: casing
420: second booster member 421: outlet port closing member
430: bar for closing member pushing 431: auxiliary spring

Claims (3)

A liquefied petroleum gas storage tank in which liquefied petroleum gas is stored;
An atmospheric evaporation unit for vaporizing the liquid liquefied petroleum gas;
A liquid discharge pipe having one end connected to the liquefied petroleum gas storage tank for discharging the liquid liquefied petroleum gas from the liquefied petroleum gas storage tank;
A gas phase discharge pipe having one end connected to the liquefied petroleum gas storage tank for discharging vapor-phase liquefied petroleum gas from the liquefied petroleum gas storage tank;
A liquid phase decompression unit provided at the other end of the liquid phase discharge pipe to decompress the pressure of the liquid phase liquefied petroleum gas;
A vaporizing portion connection pipe provided to supply the liquid phase liquefied petroleum gas decompressed in the liquid phase decompression portion to the atmospheric vaporization portion;
A gas-phase flow regulating valve provided between the other end of the gas-phase exhaust pipe and the vaporizing portion connecting pipe to regulate the flow rate of the gas-phase liquefied petroleum gas flowing from the gas-phase exhaust pipe to the vaporizing portion connecting pipe in accordance with the pressure of the gas- Part;
And a second gas supply line for supplying gas to the second gas supply line.
The method according to claim 1,
A liquid flow rate regulator is provided between the vaporizing portion inlet pipe and the liquid pressure reducing portion,
Wherein the liquid flow rate regulator regulates the amount of the liquid liquefied gas flowing into the liquid flow rate regulator by the first buoyancy material moving up and down according to the level of the liquid liquefied gas.
The method according to claim 1,
A liquid leakage preventing device is provided at a rear end of the atmospheric evaporation portion,
The liquid leakage preventing device includes a casing having an inlet formed at a lower portion thereof and an outlet formed at an upper portion thereof, a second booster member provided inside the casing, and a second booster member provided at an upper portion of the second booster member, And a closing member pushing bar provided on the upper portion of the casing, wherein the outlet closing member is provided to close the outlet when the liquid is moved.
KR1020140038475A 2014-04-01 2014-04-01 Atmospheric Vaporizing System for Liquified Petroleum Gas KR101575028B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020140038475A KR101575028B1 (en) 2014-04-01 2014-04-01 Atmospheric Vaporizing System for Liquified Petroleum Gas
PCT/KR2014/012520 WO2015152496A1 (en) 2014-04-01 2014-12-18 Atmospheric vaporizing method of liquefied petroleum gas and atmospheric vaporizing system for liquefied petroleum gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140038475A KR101575028B1 (en) 2014-04-01 2014-04-01 Atmospheric Vaporizing System for Liquified Petroleum Gas

Publications (2)

Publication Number Publication Date
KR20150114196A true KR20150114196A (en) 2015-10-12
KR101575028B1 KR101575028B1 (en) 2015-12-11

Family

ID=54240780

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140038475A KR101575028B1 (en) 2014-04-01 2014-04-01 Atmospheric Vaporizing System for Liquified Petroleum Gas

Country Status (2)

Country Link
KR (1) KR101575028B1 (en)
WO (1) WO2015152496A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11650008B2 (en) 2017-11-24 2023-05-16 Lg Chem, Ltd. Method for vaporizing liquid propane and vaporizing apparatus used therefor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200009416A1 (en) * 2022-05-06 2023-11-06 Pierluigi Paris Control unit for large LPG systems

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0662275U (en) * 1993-02-09 1994-09-02 日立化成工業株式会社 Float check valve
JP4596620B2 (en) * 2000-09-13 2010-12-08 伊藤工機株式会社 LPG vaporization mechanism
KR200421595Y1 (en) * 2006-04-14 2006-07-13 주식회사 유엔에스 LPG GAS gasification equipment
KR20080081571A (en) * 2007-03-06 2008-09-10 신용에너지주식회사 Liquid spill preventive device
KR101368379B1 (en) * 2012-12-26 2014-02-28 전승채 Cryogenic storage tank system and auto flow path selector valve therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11650008B2 (en) 2017-11-24 2023-05-16 Lg Chem, Ltd. Method for vaporizing liquid propane and vaporizing apparatus used therefor

Also Published As

Publication number Publication date
WO2015152496A1 (en) 2015-10-08
KR101575028B1 (en) 2015-12-11

Similar Documents

Publication Publication Date Title
US7195035B2 (en) In-tank hydrogen distribution valve
WO2019008923A1 (en) Ship
KR101346235B1 (en) Sea water heating apparatus and it used lng regasification system
US20170291486A1 (en) Hydrogen fuel supply system
US8459241B2 (en) Liquefied natural gas system for a natural gas vehicle
CN101533918B (en) Multiple phase transfer valve for liquid hydrogen tank
JP5706656B2 (en) Liquefied gas discharge equipment
WO2016056481A1 (en) Drainage recovery device
KR101575028B1 (en) Atmospheric Vaporizing System for Liquified Petroleum Gas
KR102050789B1 (en) Apparatus and Method for Regasification of Liquefied Gas
CN209740680U (en) Gas valve and water carbonation system including the same
WO2015128265A1 (en) Valve for lpg storage tank
KR101368379B1 (en) Cryogenic storage tank system and auto flow path selector valve therefor
KR101722751B1 (en) Apparatus for supplying Forced Boil Off Gas
KR101512799B1 (en) Atmospheric Vaporizing System and Vaporizing Method for Liquified Petroleum Gas
JP2009133438A (en) High-pressure liquefied gas storage vaporization device and high-pressure liquefied gas storage vaporization method
KR102606577B1 (en) Liquefied gas re-gasification system
KR20170044417A (en) Separator
KR101864744B1 (en) LNG regasification plant
JP3212480U (en) Automatic switching regulator
JP2002071095A (en) Liquefied gas feeder
KR101801906B1 (en) Liquid gas cargo tank
JP2009002396A (en) Lp gas supply system
KR101644343B1 (en) Regasification apparatus using circulating water
US20150355645A1 (en) Pressure Build-up Valve

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20181001

Year of fee payment: 4

FPAY Annual fee payment

Payment date: 20191127

Year of fee payment: 5