CN113586947A - C-type liquefied gas cabin pressure control system - Google Patents
C-type liquefied gas cabin pressure control system Download PDFInfo
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- CN113586947A CN113586947A CN202110884973.6A CN202110884973A CN113586947A CN 113586947 A CN113586947 A CN 113586947A CN 202110884973 A CN202110884973 A CN 202110884973A CN 113586947 A CN113586947 A CN 113586947A
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- pressure relief
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- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 86
- 108010066057 cabin-1 Proteins 0.000 description 9
- 239000000446 fuel Substances 0.000 description 8
- 230000007774 longterm Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 1
- -1 at this time Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
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- 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
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
-
- 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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of 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
- F17C2205/0323—Valves
- F17C2205/0332—Safety valves or pressure relief 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
-
- 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
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
-
- 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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0626—Pressure
-
- 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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0689—Methods for controlling or regulating
-
- 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
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/02—Improving properties related to fluid or fluid transfer
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a pressure control system of a C-shaped liquefied gas cabin, which relates to the technical field of oil and gas storage and transportation and comprises a pressure relief assembly; pressure release subassembly is connected with C type liquefied gas cabin, pressure release subassembly is used for controlling C type liquefied gas cabin internal pressure and is less than the design pressure in C type liquefied gas cabin, simultaneously pressure release subassembly's pressure release pressure value can be adjusted according to the operating mode, because C type liquefied gas cabin fills the dress rate and is related to pressure release pressure, pressure release subassembly's pressure is adjustable, consequently, C type liquefied gas cabin fills the dress rate and can change according to the pressure release pressure adjustment that pressure release subassembly set for through adjusting pressure release pressure C type liquefied gas cabin fills dress rate and the time of breathing out, and the user can select suitable pressure release pressure according to self demand, has improved the practical flexibility in C type liquefied gas cabin, has greatly improved user's experience and has felt.
Description
Technical Field
The invention relates to the technical field of oil and gas storage and transportation, in particular to a C-shaped liquefied gas cabin pressure control system.
Background
The C-type liquefied gas storage tank is used as a main pressure tank storage type of natural gas, and is used in more and more scenes along with the popularization of clean energy. The volume of the C-shaped chamber is directly determined by the requirements of users, and under the condition that the requirements of the users, the pressure setting and the filling rate of the tank are fixed, the size of the C-shaped tank is determined.
In the prior art, the ventilation pressure of a main stream C-type cabin is usually set at 4-4.5 bar, so that the filling rate of corresponding LNG (with the density of about 0.44t/m3) is usually about 90%, the use efficiency of a C-type tank is still improved, the filling rate is set to be single, and a user cannot select the filling rate according to the use condition of the user.
Disclosure of Invention
The invention aims to solve the following problems: the filling rate of the C-type liquefied gas cabin is improved, and a user can flexibly select the C-type liquefied gas cabin according to the self requirement.
(II) technical scheme
The invention provides a C-shaped liquefied gas cabin pressure control system, which comprises: a pressure relief assembly;
the pressure relief assembly is connected with the C-shaped liquefied gas cabin and used for controlling the pressure in the C-shaped liquefied gas cabin to be smaller than the design pressure of the C-shaped liquefied gas cabin, and meanwhile, the pressure relief pressure value of the pressure relief assembly can be adjusted according to the working condition.
Further, the pressure relief assembly comprises at least two first pressure relief valves, all the first pressure relief valves are connected with the C-shaped liquefied gas cabin in parallel, and the pressure relief pressure values of all the first pressure relief valves are arranged in a gradient manner from small to large;
the first pressure release valve is used for controlling the pressure in the C-shaped liquefied gas cabin to be smaller than the design pressure of the C-shaped liquefied gas cabin.
Furthermore, the pressure relief assembly further comprises at least two first front valves, one end of each first front valve is connected with the corresponding first pressure relief valve, and the other end of each first front valve is connected with the C-shaped liquefied gas cabin;
the first preposed valve is used for controlling the on-off of the pressure relief assembly.
Further, the first pressure relief valves and the first pre-valves correspond to each other one by one.
Further, the pressure relief assembly further comprises at least two second pressure relief valves, wherein the second pressure relief valves are backup valves of the first pressure relief valves;
all the second pressure relief valves are connected with the type C liquefied gas cabin and are connected with the first pressure relief valve in parallel;
the second pressure relief valve is disposed in correspondence with the first pressure relief valve.
Furthermore, the pressure relief assembly further comprises at least two second front valves, one end of each second front valve is connected with the C-shaped liquefied gas cabin, and the other end of each second front valve is connected with the second pressure relief valve;
the second preposed valve is used for controlling the on-off of the pressure relief assembly.
Further, a second pressure relief valve corresponds to the second pilot valve one to one.
Further, the pressure relief assembly comprises a first adjustable pressure relief valve, and the first adjustable pressure relief valve is connected with the C-shaped liquefied gas cabin;
the first adjustable pressure release valve is used for controlling the pressure in the C-shaped liquefied gas cabin to be smaller than the design pressure of the C-shaped liquefied gas cabin.
Further, the pressure relief assembly further comprises a third front valve, and the third front valve and the first adjustable pressure relief valve are sequentially arranged along the medium flowing direction in the C-shaped liquefied gas cabin;
the third preposed valve is used for controlling the on-off of the pressure relief assembly.
Further, the pressure relief assembly further comprises a second adjustable pressure relief valve and a fourth front valve, the second adjustable pressure relief valve is a standby valve of the first adjustable pressure relief valve, and the fourth front valve and the second adjustable pressure relief valve are sequentially arranged along the medium flowing direction in the C-shaped liquefied gas cabin;
the fourth prepositive valve is used for controlling the on-off of the pressure relief assembly.
The invention has the beneficial effects that: the invention provides a C-shaped liquefied gas cabin pressure control system, which comprises: c type liquefied gas cabin and pressure release subassembly, the pressure release subassembly with C type liquefied gas cabin is connected, the pressure release subassembly is used for controlling C type liquefied gas cabin internal pressure is less than the design pressure in C type liquefied gas cabin, simultaneously the pressure release pressure value of pressure release subassembly can be adjusted according to the operating mode.
The filling rate of the C-shaped liquefied gas cabin is related to the pressure relief pressure, and the pressure of the pressure relief assembly is adjustable, so that the filling rate of the C-shaped liquefied gas cabin can be adjusted according to the pressure relief pressure set by the pressure relief assembly, and when the consumption of liquefied gas is expected to be high, the pressure relief pressure of the pressure relief assembly can be reduced, so that the filling rate of the C-shaped liquefied gas cabin can be improved, the gas retaining time can be shortened, and the purpose of long endurance can be achieved by filling more liquefied gas; when anticipated liquefied gas consumption is slower, can improve pressure release component's pressure release pressure improves the time of breathing out, reduces the filling rate, can avoid the waste of fuel this moment. Change through adjustment pressure release pressure the filling rate and the time of breathing out of C type liquefied gas cabin, the user can select suitable pressure release pressure according to self demand, has improved the practical flexibility in C type liquefied gas cabin, has greatly improved user's experience and has felt.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a type C liquefied gas tank pressure control system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another type C liquefied gas tank pressure control system provided by an embodiment of the present invention;
fig. 3 is a table showing changes in LNG relative density and filling rate at a pressure relief pressure of 4.4bar according to an embodiment of the present invention;
FIG. 4 is a table showing the change in LNG relative density and filling rate at a pressure relief pressure of 0.7bar according to an embodiment of the present invention;
FIG. 5 is a graph showing the pressure and temperature variation curve and the density and temperature variation curve of LNG in a type C liquefied gas tank according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a pressure control system for actual use of a C-type liquefied gas tank according to an embodiment of the present invention.
Icon: type 1-C liquefied gas tank;
21-a first pressure relief valve; 22-a first pre-valve; 23-a second pressure relief valve; 24-a second pre-valve;
31-a first adjustable pressure relief valve; 32-a third pre-valve; 33-a second adjustable pressure relief valve; 34-fourth pre-valve.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
It should be noted that, in the description of the present invention, the terms "connected" and "mounted" should be interpreted broadly, for example, they may be fixedly connected, detachably connected, or integrally connected; can be directly connected or connected through an intermediate medium; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 2, an embodiment of the present invention provides a type C liquefied gas tank pressure control system, including: the pressure relief assembly is connected with the C-shaped liquefied gas cabin 1, the pressure relief assembly is used for controlling the pressure in the C-shaped liquefied gas cabin 1 to be smaller than the design pressure of the C-shaped liquefied gas cabin 1, and meanwhile the pressure relief value of the pressure relief assembly can be adjusted according to the working condition.
In the pressure control system for the C-type liquefied gas tank provided by this embodiment, the pressure relief component is a safety protection system for the C-type liquefied gas tank 1, and is configured to discharge a medium to the outside of the C-type liquefied gas tank 1 to prevent the C-type liquefied gas tank 1 from causing an accident due to an excessively high pressure when the medium pressure in the C-type liquefied gas tank 1 rises to exceed a predetermined value and a pressure relief pressure value set by the pressure relief component.
In this example, the LNG is taken as an example, and after the LNG is filled into the C-type liquefied gas tank 1, the initial general temperature in the tank is-163 ℃. Due to heat conduction, external heat can continuously enter the C-shaped liquefied gas cabin 1, the temperature in the C-shaped liquefied gas cabin 1 can rise, the temperature of LNG also rises, the density is reduced, the volume is increased, LNG begins to volatilize to become a gaseous state, the air pressure of the cabin top rises, and when the pressure of the cabin top rises to the pressure relief value set by the pressure relief assembly, the valve is opened, and volatilized gas is discharged.
As shown in fig. 3, according to an embodiment of the present invention, fig. 3 is a graph of LNG density versus filling rate at 4bar of the pressure relief assembly, and it can be concluded that as LNG density decreases, filling rate increases.
As shown in fig. 5, according to an embodiment of the present invention, the pressure-temperature curve shows that when the temperature is increased, the pressure in the type C lng tank 1 is increased.
As shown in fig. 5, according to an embodiment of the present invention, the first curve is a density-temperature relationship curve of LNG, and when the temperature is increased, the density of LNG is decreased due to vaporization of LNG.
As shown in fig. 3 and 5, it can be seen that, when the pressure relief pressure value set by the pressure relief component is reduced, the gas volatilized in the C-type liquefied gas tank 1 is discharged at a lower pressure outside the C-type liquefied gas tank 1, and the temperature in the C-type liquefied gas tank 1 is continuously raised due to heat conduction with the outside, so that the volatilization of the LNG is accelerated, at this time, the LNG density in the C-type liquefied gas tank 1 is lower, and the filling rate corresponding to the lower density is higher, so that the filling rate of the LNG can be improved by reducing the pressure relief pressure value of the pressure relief component.
As shown in fig. 4, according to another embodiment of the present invention, when the pressure relief value of the pressure relief assembly is set to 0.7bar, the corresponding filling rate versus density curve is obtained, and it can be concluded that the filling rate of LNG in the C-type LNG tank 1 is increased when the pressure relief value of the pressure relief assembly is set to be lower.
Therefore, the filling rate of the LNG in the C-type liquefied gas tank 1 can be changed by providing the pressure relief assembly capable of adjusting the pressure relief pressure.
According to an embodiment provided by the invention, taking a ship using the C-type liquefied gas tank 1 as an LNG fuel storage tank as an example, when the ship is filled with LNG fuel, if the ship needs to use LNG as fuel to sail after being filled with LNG fuel, at this time, LNG in the C-type liquefied gas tank 1 is consumed faster, a lower pressure relief pressure value can be set in the pressure relief assembly to improve the filling rate of the liquefied gas tank, fill more LNG fuel, and improve cruising power; after the LNG fuel is filled in the C-type liquefied gas tank 1, the ship may stay at a port or wait for a tide, and the LNG consumption rate is slow, a high pressure relief pressure value is set, so that the filling rate is reduced, but the LNG loss is reduced, thereby facilitating long-term storage. That is, the most advantageous adjustment can be made in accordance with the expected state of use of the ship when refueling; when the LNG is greatly consumed in a short time, the filling rate of the LNG can be improved by adopting a lower pressure relief pressure value, and more LNG is loaded; when long-term storage is needed, a higher pressure relief pressure value can be set, so that the purpose of long-term storage is achieved. In addition, in the middle stage of the ship navigation, the pressure relief pressure value can be gradually increased according to the residual amount of the LNG in the C-shaped liquefied gas tank 1 (but the proportion of the residual LNG is not more than the filling rate corresponding to the higher pressure relief pressure), so that the storage time of the LNG in the tank is prolonged, and the accidental waste of LNG fuel is avoided. It should be noted that the higher pressure relief value described herein is smaller than the actual pressure of the C-type lng tank 1, so as to prevent accidents due to the overhigh pressure in the C-type lng tank 1.
It can be understood that the outer wall of the C-shaped liquefied gas cabin 1 can be made of a heat insulation material, or a vacuum double-layer cabin wall is arranged on the side wall of the C-shaped liquefied gas cabin 1, so that the purpose of slowing down heat conduction is achieved, and the purpose of providing the filling rate is achieved by setting a lower pressure relief pressure value.
According to one embodiment of the invention, the pressure relief assembly can adjust the pressure relief value according to actual practical conditions, so as to adjust the filling rate of the LNG in the C-shaped liquefied gas tank 1.
Example one
As shown in fig. 1, the pressure relief assembly includes at least two first pressure relief valves 21, all the first pressure relief valves 21 are connected in parallel with the C-type liquefied gas tank 1, pressure relief values of all the first pressure relief valves 21 are different, and the first pressure relief valves 21 are configured to control a pressure in the C-type liquefied gas tank 1 to be smaller than a design pressure of the C-type liquefied gas tank 1.
According to an embodiment of the present invention, the pressure relief assembly is provided with two or more first pressure release valves 21 with different pressure relief values, so as to achieve the purpose of changing the filling rate, when a higher filling rate is required, a lower first pressure release valve 21 may be adopted, when a long-term storage is required, a first pressure release valve 21 with a higher pressure relief value may be adopted, the first pressure release valves 21 are connected in parallel, so that the first pressure release valves 21 do not affect each other during operation, and meanwhile, in order to avoid damage and safety accidents of the C-type liquefied gas tank 1, the highest pressure relief value of the first pressure release valve 21 needs to be smaller than the design pressure of the C-type liquefied gas tank 1.
As shown in fig. 1, the pressure relief assembly further includes at least two first front valves 22, one end of each first front valve 22 is connected to the first pressure relief valve 21, the other end of each first front valve 22 is connected to the C-type liquefied gas tank 1, and the first front valve 22 is used for controlling on/off of the pressure relief assembly.
According to an embodiment of the present invention, the first pre-valve 22 is disposed between the C-type liquefied gas tank 1 and the first pressure relief valve 21, when the first pressure relief valve 21 with a higher pressure relief value needs to operate, the first pre-valve 22 between the first pressure relief valve 21 with a lower pressure relief value and the C-type liquefied gas tank 1 is closed, and a pipeline is cut off, so that the first pressure relief valve 21 with a higher pressure relief value operates, when the first pressure relief valve 21 with a lower pressure relief value needs to operate, the operation mode is the same, and details are not repeated herein.
It can be understood that the function of the first front valve 22 is to cut off a pipeline, and meanwhile, the working pressure of the first front valve 22 cannot be lower than the pressure relief pressure of the first front valve 22, preferably, the first front valve 22 is a gate valve with a simple structure, so that the applicability is strong, and other parts such as a stop valve can be used as long as the on-off control of the pressure relief assembly can be achieved.
As shown in fig. 1, the first pressure relief valves 21 and the first pre-valves 22 correspond one to one. Namely, one first pre-valve 22 may be disposed between each first pressure relief valve 21 and the type C lng tank 1.
It is understood that two or more first pre-valves 22 may be disposed between the first pressure relief valve 21 and the type C LNG tank 1 to prevent LNG leakage due to the other first pre-valves 22 not being replaced in time due to damage.
As shown in fig. 1, the pressure relief assembly further includes at least two second pressure relief valves 23, the second pressure relief valves 23 are backup valves of the first pressure relief valves 21, the second pressure relief valves 23 are connected to the C-type liquefied gas tank 1 and are connected in parallel to the first pressure relief valves 21, and the second pressure relief valves 23 are disposed corresponding to the first pressure relief valves 21.
According to an embodiment of the present invention, since the pressure relief component needs to be periodically verified, that is, when the first pressure relief valve 21 is damaged or verified, the second pressure relief valve 23 is used for working, it should be noted that the number and the pressure relief value of the second pressure relief valve 23 and the first pressure relief valve 21 need to be in one-to-one correspondence, and the second pressure relief valve 23 is connected in parallel with the first pressure relief valve 21, so as to achieve the purpose of backup.
As shown in fig. 1, the pressure relief assembly further includes at least two second pre-valves 24, one end of each second pre-valve 24 is connected to the C-type liquefied gas tank 1, the other end of each second pre-valve 24 is connected to the second pressure release valve 23, and the second pre-valves 24 are used for controlling on/off of the pressure relief assembly.
According to an embodiment of the present invention, the number of the second pre-valve 24 is the same as the number of the second pressure relief valve 23, and the pre-valves are correspondingly arranged. The second pre-valve 24 has the same function as the first pre-valve 22, and will not be described herein.
In practical use, as shown in fig. 6, the pressure relief assembly can achieve more comprehensive change of the filling rate of the type C liquefied gas tank 1 by providing three first pressure relief valves 21 and three second pressure relief valves 23. The first pressure release valve 21 and the second pressure release valve 23 are connected in parallel, and the first pressure release valve 21 and the second pressure release valve 23 are arranged in a one-to-one correspondence manner, that is, the number and the pressure value are both arranged in a corresponding manner. The pressure of the three pressure release valves can be sequentially increased, and can also be selected according to the actual use condition (use environment and the like) of the C-shaped liquefied gas cabin 1, and only the requirement that the highest pressure release pressure value of the first release valve is smaller than the design pressure of the C-shaped liquefied gas cabin 1 is met.
Example two
As shown in fig. 2, the pressure relief assembly includes a first adjustable pressure relief valve 31, the first adjustable pressure relief valve 31 is connected to the C-type liquefied gas tank 1, and the first adjustable pressure relief valve 31 is configured to control a pressure in the C-type liquefied gas tank 1 to be smaller than a design pressure of the C-type liquefied gas tank 1.
According to an embodiment of the present invention, the first adjustable pressure relief valve 31 may be set within a certain range, in this embodiment, the pressure relief assembly needs to adjust a pressure relief value to achieve the purpose of changing the filling rate, and the pressure relief value of the first adjustable pressure relief valve 31 is adjusted to achieve the purpose.
As shown in fig. 2, the pressure relief assembly further includes a third pre-valve 32, and along the medium flowing direction in the C-type liquefied gas tank 1, the third pre-valve 32 and the first adjustable pressure relief valve 31 are sequentially arranged, and the third pre-valve 32 is used for controlling on/off of the pressure relief assembly.
According to an embodiment of the present invention, the third pre-valve 32 is used to control the on/off of the pressure relief assembly, when the first adjustable pressure relief valve 31 is repaired or verified, the third pre-valve 32 is closed to block the gas flow in the pipeline, and then the first adjustable pressure relief valve 31 is removed. The third pre-valve 32 has the same structure and function as those of the first embodiment, and will not be described herein again.
As shown in fig. 2, the pressure relief assembly further includes a second adjustable pressure relief valve 33 and a fourth pre-valve 34, the second adjustable pressure relief valve 33 is a backup valve of the first adjustable pressure relief valve 31, and along the medium flowing direction in the C-type liquefied gas tank 1, the fourth pre-valve 34 and the second adjustable pressure relief valve 33 are sequentially disposed, and the fourth pre-valve 34 is used for controlling on/off of the pressure relief assembly.
According to an embodiment of the present invention, the second adjustable pressure relief valve 33 is a backup valve of the first adjustable pressure relief valve 31, and functions the same as the second pressure relief valve 23 in the first embodiment, and thus, the detailed description thereof is omitted. It is noted that the first adjustable pressure relief valve 31 is connected in parallel with the second adjustable pressure relief valve 33.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A type C liquefied gas tank pressure control system, comprising: a pressure relief assembly;
the pressure relief assembly is connected with the C-shaped liquefied gas cabin (1), the pressure relief assembly is used for controlling the pressure in the C-shaped liquefied gas cabin (1) to be smaller than the design pressure of the C-shaped liquefied gas cabin (1), and meanwhile the pressure relief value of the pressure relief assembly can be adjusted according to the working condition.
2. The type-C liquefied gas tank pressure control system according to claim 1, wherein the pressure relief assembly comprises at least two first pressure relief valves (21), all the first pressure relief valves (21) are connected in parallel with the type-C liquefied gas tank (1), and pressure relief values of all the first pressure relief valves (21) are set in a gradient from small to large;
the first pressure release valve (21) is used for controlling the pressure in the C-shaped liquefied gas cabin (1) to be smaller than the design pressure of the C-shaped liquefied gas cabin (1).
3. Type C liquefied gas tank pressure control system according to claim 2, characterized in that the pressure relief assembly further comprises at least two first pre-valves (22), the first pre-valves (22) being connected to the first pressure relief valve (21) at one end and to the type C liquefied gas tank (1) at the other end;
the first front valve (22) is used for controlling the on-off of the pressure relief assembly.
4. Type C liquefied gas tank pressure control system according to claim 3, wherein the first pressure relief valve (21) and the first pre-valve (22) correspond one to one.
5. A liquefied gas tank C pressure control system according to claim 2, wherein the pressure relief assembly further comprises at least two second pressure relief valves (23), the second pressure relief valves (23) being backup valves for the first pressure relief valves (21);
all the second pressure relief valves (23) are connected with the type C liquefied gas tank (1) and are connected with the first pressure relief valve (21) in parallel;
the second pressure release valve (23) is provided in correspondence with the first pressure release valve (21).
6. Type C liquefied gas tank pressure control system according to claim 5, wherein the pressure relief assembly further comprises at least two second pre-valves (24), the second pre-valves (24) being connected to the type C liquefied gas tank (1) at one end and to the second pressure relief valve (23) at the other end;
the second front valve (24) is used for controlling the on-off of the pressure relief assembly.
7. Type C liquefied gas tank pressure control system according to claim 6, wherein a second pressure relief valve (23) and the second pre-valve (24) correspond one to one.
8. The type C liquefied gas tank pressure control system according to claim 1, wherein the pressure relief assembly includes a first adjustable pressure relief valve (31), the first adjustable pressure relief valve (31) being connected to the type C liquefied gas tank (1);
the first adjustable pressure release valve (31) is used for controlling the pressure in the C-shaped liquefied gas cabin (1) to be smaller than the design pressure of the C-shaped liquefied gas cabin (1).
9. Type C liquefied gas tank pressure control system according to claim 8, characterized in that the pressure relief assembly further comprises a third pre-valve (32), and the third pre-valve (32) and the first adjustable pressure relief valve (31) are arranged in sequence in the direction of medium flow in the type C liquefied gas tank (1);
the third front valve (32) is used for controlling the on-off of the pressure relief assembly.
10. The type C liquefied gas tank pressure control system according to claim 9, wherein the pressure relief assembly further includes a second adjustable pressure relief valve (33) and a fourth pre-valve (34), the second adjustable pressure relief valve (33) is a back-up valve for the first adjustable pressure relief valve (31), and the fourth pre-valve (34) and the second adjustable pressure relief valve (33) are sequentially disposed in a medium flow direction in the type C liquefied gas tank (1);
the fourth front valve (34) is used for controlling the on-off of the pressure relief assembly.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110884973.6A CN113586947A (en) | 2021-08-03 | 2021-08-03 | C-type liquefied gas cabin pressure control system |
| PCT/CN2022/108206 WO2023011282A1 (en) | 2021-08-03 | 2022-07-27 | Pressure control system of c-shaped liquefied gas tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110884973.6A CN113586947A (en) | 2021-08-03 | 2021-08-03 | C-type liquefied gas cabin pressure control system |
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| Publication Number | Publication Date |
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| CN113586947A true CN113586947A (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110884973.6A Pending CN113586947A (en) | 2021-08-03 | 2021-08-03 | C-type liquefied gas cabin pressure control system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113586947A (en) |
| WO (1) | WO2023011282A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023011282A1 (en) * | 2021-08-03 | 2023-02-09 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Pressure control system of c-shaped liquefied gas tank |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101706037A (en) * | 2007-02-12 | 2010-05-12 | 大宇造船海洋株式会社 | Liquefied natural gas tank |
| CN106051984A (en) * | 2016-07-15 | 2016-10-26 | 珠海格力电器股份有限公司 | Air conditioning system with liquid bypass device |
| CN107636381A (en) * | 2015-12-10 | 2018-01-26 | 三菱重工业株式会社 | The application method of safety valve system in safety valve system, storage tank, ship and ship |
| CN207145692U (en) * | 2017-09-13 | 2018-03-27 | 珠海格力电器股份有限公司 | Relief valve, air conditioner water system and air conditioner water machine |
| JP2019007511A (en) * | 2017-06-21 | 2019-01-17 | 三井Ｅ＆Ｓ造船株式会社 | Liquefied gas management system |
| CN109630875A (en) * | 2017-10-09 | 2019-04-16 | 张家港中集圣达因低温装备有限公司 | Liquefied gas bottle releasing pressure automatically system and liquified gas automobile |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456066A (en) * | 2014-12-26 | 2015-03-25 | 江苏大津重工有限公司 | Economic type fuel supply device applicable to small-size LNG power ship |
| US10400712B2 (en) * | 2015-04-30 | 2019-09-03 | Westport Power Inc. | Intelligent pressure management system for cryogenic fluid systems |
| CN113586947A (en) * | 2021-08-03 | 2021-11-02 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | C-type liquefied gas cabin pressure control system |
-
2021
- 2021-08-03 CN CN202110884973.6A patent/CN113586947A/en active Pending
-
2022
- 2022-07-27 WO PCT/CN2022/108206 patent/WO2023011282A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101706037A (en) * | 2007-02-12 | 2010-05-12 | 大宇造船海洋株式会社 | Liquefied natural gas tank |
| CN107636381A (en) * | 2015-12-10 | 2018-01-26 | 三菱重工业株式会社 | The application method of safety valve system in safety valve system, storage tank, ship and ship |
| CN106051984A (en) * | 2016-07-15 | 2016-10-26 | 珠海格力电器股份有限公司 | Air conditioning system with liquid bypass device |
| JP2019007511A (en) * | 2017-06-21 | 2019-01-17 | 三井Ｅ＆Ｓ造船株式会社 | Liquefied gas management system |
| CN207145692U (en) * | 2017-09-13 | 2018-03-27 | 珠海格力电器股份有限公司 | Relief valve, air conditioner water system and air conditioner water machine |
| CN109630875A (en) * | 2017-10-09 | 2019-04-16 | 张家港中集圣达因低温装备有限公司 | Liquefied gas bottle releasing pressure automatically system and liquified gas automobile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023011282A1 (en) * | 2021-08-03 | 2023-02-09 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Pressure control system of c-shaped liquefied gas tank |
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| Publication number | Publication date |
|---|---|
| WO2023011282A1 (en) | 2023-02-09 |
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