CN108187452A - A kind of flue gas formula inert gas system suitable for crude oil carrier - Google Patents
A kind of flue gas formula inert gas system suitable for crude oil carrier Download PDFInfo
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- CN108187452A CN108187452A CN201711111834.XA CN201711111834A CN108187452A CN 108187452 A CN108187452 A CN 108187452A CN 201711111834 A CN201711111834 A CN 201711111834A CN 108187452 A CN108187452 A CN 108187452A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
- B01D2252/1035—Sea water
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a kind of flue gas formula inert gas system suitable for crude oil carrier, belong to field of ship equipment.The flue gas formula inert gas system includes flue gas scrubber, wind turbine, flue gas and takes air valve, intake valve, air outlet valve, detection module and control module.By setting detection module and control module, detection module part is used for the actual current value I of real-time detection blower fan1, control module is for the actual current value I according to wind turbine1With the load current value I of wind turbine0Difference absolute value e adjust air outlet valve connection area, when the actual current value of wind turbine is less than the load current value of wind turbine, then increase the connection area of air outlet valve, when the actual current value of wind turbine is more than the load current value of wind turbine, then reduce the connection area of air outlet valve, by the connection area for adjusting air outlet valve, the load of wind turbine can be changed, so as to change the electric current of wind turbine so that the electric current of wind turbine keeps stablizing, and prevents wind turbine from generating larger vibration and noise.
Description
Technical field
The present invention relates to shipborne equipment technical field, more particularly to a kind of flue gas formula inert gas system suitable for crude oil carrier.
Background technology
Crude oil carrier in charge of oil, emptying, in cargo tank can there are a large amount of oil gas, if at this point, full of large quantity of air in cargo tank,
Fluid generates electrostatic with cargo tank friction, it is easy to the oil gas for volatilization of igniting so that cargo tank explodes.In order to improve the peace of ship
Entirely, International Convention for the Safety of Life at Sea (SOLAS) mandatory provision is every using the crude oil carrier of crude oil washing and 20000 tons or more
New product carrier must be provided with inert gas system, the flue gas generated on crude oil carrier is filled with cargo tank by the inert gas system, due to
Flue gas content in flue gas is seldom, can be to avoid exploding in cargo tank.
Inert gas system is different according to the source of noble gas, can be divided into flue gas formula, generator formula and association type inert gas system.It is existing
Some flue gas formula inert gas system mainly include scrubbing tower, wind turbine etc..Its operation principle is that the boiler chimney on crude oil carrier generates
Flue gas enters flue, first pass through scrubbing tower cooled down, desulfurization and dedusting, flue gas is extracted out by wind turbine, is filled with oil storage chamber.
In the implementation of the present invention, inventor has found that the prior art has at least the following problems：
Existing flue gas formula inert gas system by adjusting the drain valve of fan outlet and regulating valve reaches control noble gas simultaneously
Manifold pressure maintains stable purpose, and still, this method can cause the electric current of wind turbine unstable so that wind turbine generates larger
Vibration and noise.
Invention content
In order to solve the problem of the unstable vibration for generating bigger of fan operation and noise in the prior art, the present invention is real
It applies example and provides a kind of flue gas formula inert gas system suitable for crude oil carrier.The technical solution is as follows：
The present invention provides a kind of flue gas formula inert gas system suitable for crude oil carrier, the flue gas formula inert gas system includes cigarette
Gas wash tower, wind turbine, flue gas take air valve, intake valve, air outlet valve, detection module and control module, and the air outlet valve is flow tune
Save valve；
The flue gas scrubber has air inlet, gas outlet, inlet and outlet, the water inlet of the flue gas scrubber
For the water filling into the flue gas scrubber, the water outlet of the flue gas scrubber for draining, the flue gas take air valve into
Gas port is used to connect the boiler chimney of crude oil carrier, and the flue gas takes the gas outlet of air valve to connect with the air inlet of the flue gas scrubber
It is logical；
The gas outlet of the flue gas scrubber is connected with the air inlet of the intake valve, the gas outlet of the intake valve and institute
The air inlet connection of wind turbine is stated, the gas outlet of the wind turbine is connected with the air inlet of the air outlet valve, the outlet of the air outlet valve
Mouth is connected with the air inlet of the main control valve, and the gas outlet of the main control valve is used to connect the oil storage chamber of the crude oil carrier；
The detection module is used for the actual current value I of real-time detection blower fan1；
The control module is used for the actual current value I according to the wind turbine1With the load current value I of wind turbine0Difference
Absolute value e adjusts the connection area of the air outlet valve；
As e ＞ IxAnd I0＞ I1When, by the connection area increase Δ S of the air outlet valve1,
As e ＞ IxAnd I0＜ I1When, the connection area of the air outlet valve is reduced into Δ S1,
Work as Iy＜ e≤IxAnd I0＞ I1When, by the connection area increase Δ S of the air outlet valve2,
Work as Iy＜ e≤IxAnd I0＜ I1When, the connection area of the air outlet valve is reduced into Δ S2,
As e≤IyWhen, the connection area for keeping the air outlet valve is constant, wherein, Ix＞ Iy, Iy≤ 5A, Δ S1For it is described go out
The 4% of the largest connected area of air valve, Δ S22% of largest connected area for the air outlet valve.
Further, the flue gas formula inert gas system further includes deck water seal and main shut-off valve, and the deck water seal includes
Flashback tank, the flashback tank have air inlet, gas outlet, water inlet, water outlet, the air inlet of the flashback tank and the master control
The gas outlet connection of valve processed, the gas outlet of the flashback tank are connected with the air inlet of the main shut-off valve, the main shut-off valve
Gas outlet is for connecting the oil storage chamber, and the water inlet of the flashback tank is for the water filling into the flashback tank, the flashback tank
Water outlet for draining, in the vertical direction, the air inlet of the flashback tank is located at the lower section of the gas outlet of the flashback tank.
Further, the deck water seal further includes heating unit, and the heating unit is used to heat in the flashback tank
Water.
Further, the flue gas formula inert gas system further includes hydroseal pump and deck water seal drain valve, the flashback tank
Water inlet is connect with the water outlet of the hydroseal pump, and the hydroseal pump is used for extracting seawater；The water outlet of the flashback tank and institute
State the water inlet connection of deck water seal drain valve.
Further, check-valves, the non-return are additionally provided between the water outlet of the flashback tank and the main shut-off valve
The air inlet of valve is connected with the gas outlet of the flashback tank, and the gas outlet of the check-valves and the air inlet of the main shut-off valve connect
It is logical.
Further, pressure transmitter, the air inlet of the main control valve are additionally provided at the gas outlet of the main shut-off valve
Mouth is also communicated with bleeder valve, and the air inlet of the bleeder valve is connected with the air inlet of the main control valve, and the bleeder valve goes out
Gas port and atmosphere.
Further, vent valve, the air inlet connection of the vent valve are additionally provided at the gas outlet of the main control valve
The gas outlet of the main control valve, the gas outlet of the vent valve and atmosphere.
Further, it is additionally provided with oxygen analyser at the air inlet of the main control valve.
Further, the flue gas formula inert gas system further includes blow down valve, the gas outlet of the blow down valve and the flue gas
The air inlet of air valve is taken to connect.
Further, the flue gas formula inert gas system further includes scrubbing tower feed water valve, scrubbing tower pump, scrubbing tower drain valve,
The water inlet of the flue gas scrubber is connected with the water outlet of the scrubbing tower feed water valve, the water inlet of the scrubbing tower feed water valve
Connect with the water outlet of scrubbing tower pump, scrubbing tower pump for extracting seawater, the water outlet of the flue gas scrubber and
The water inlet connection of the scrubbing tower drain valve.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：
By setting detection module and control module, detection module part is used for the actual current value I of real-time detection blower fan1,
Control module is used for the actual current value I according to wind turbine1With the load current value I of wind turbine0Difference absolute value e adjust outlet
The connection area of valve when the actual current value of wind turbine is less than the load current value of wind turbine, then increases the connection area of air outlet valve,
When the actual current value of wind turbine is more than the load current value of wind turbine, then reduce the connection area of air outlet valve, by adjusting outlet
The connection area of valve, thus it is possible to vary the load of wind turbine, so as to change the electric current of wind turbine so that the electric current of wind turbine keeps stablizing, and prevents
Only wind turbine generates larger vibration and noise.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of structure diagram of flue gas formula inert gas system suitable for crude oil carrier provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of structure diagram of flue gas formula inert gas system suitable for crude oil carrier provided in an embodiment of the present invention,
As shown in Figure 1, flue gas formula inert gas system includes flue gas scrubber 10, flue gas takes air valve 1a, wind turbine 20, intake valve 20a, air outlet valve
20b, detection module 30 and control module 40.
Flue gas scrubber 10 has air inlet, gas outlet, inlet and outlet, and the water inlet of flue gas scrubber 10 is used for
The water filling into flue gas scrubber 10, for the water outlet of flue gas scrubber 10 for draining, flue gas takes the air inlet of air valve 1a for connecting
The boiler chimney 100 of logical crude oil carrier, flue gas take the gas outlet of air valve 1a to be connected with the air inlet of flue gas scrubber 10.
In the present embodiment, the air inlet of flue gas scrubber 10 takes the gas outlet of air valve 1a to connect with two flue gases respectively,
Two flue gases take the air inlet of air valve 1a to be connected respectively with two boiler chimneys 100, then the flue gas in two boiler chimneys 100 is equal
Flue gas formula inert gas system can be supplied to, to ensure that the flue gas being finally passed into oil storage chamber is enough, and when one of boiler
When the damage of chimney 100 can not provide flue gas, another boiler chimney 100 can continue to provide flue gas.
Specifically, flue gas scrubber 10 for cooled down to flue gas in boiler chimney 100, dedusting, desulfurization.May be used also simultaneously
Play the role of dehumidifying.
Further, flue gas formula inert gas system further includes blow down valve 1b, purging branch shut-off valve 1c and seal gas valve 1d,
The gas outlet of blow down valve 1b is connected with purging the air inlet of branch shut-off valve 1c, the gas outlet of purging branch shut-off valve 1c and flue gas
The air inlet of air valve 1a is taken to connect.In the present embodiment, if the gas outlet there are two purging branch shut-off valve 1c, blow down valve 1b is divided
Air inlet not with two purging branch shut-off valve 1c connects.When the flue gas in boiler chimney 100, which flows through flue gas, takes air valve 1a,
Flue gas, which takes, can accumulate dust in air valve 1a, by setting blow down valve 1b, before flue gas takes air valve 1a to open or flue gas takes air valve
Before 1a is closed, air valve 1a is taken to purge to flue gas, can prevent flue gas from taking and more dust is accumulated in air valve 1a, influence to make
With.Purging branch shut-off valve 1c is used to that blow down valve 1b to be controlled to take the break-make of air valve 1a with flue gas.
Gas outlet of the air inlet of flue gas scrubber 10 also with seal gas valve 1d connects, the air inlet of seal gas valve 1d
With atmosphere.When flue gas takes air valve 1a to close, seal gas valve 1d is opened, when the flue gas that boiler chimney 100 generates passes through
When flue gas takes the air valve 1a to leak into flue gas formula inert gas system, seal gas valve 1d can will take the flue gas that air valve 1a is revealed by flue gas
Discharge flue gas formula inert gas system.
As shown in Figure 1, in the present embodiment, wind turbine 20 includes the first wind turbine 21 and the second wind turbine 22, intake valve 20a include
First intake valve 21a and the second intake valve 22a, air outlet valve 20b include the first air outlet valve 21b and the second air outlet valve 22b.Flue gas is washed
The gas outlet for washing tower 10 is connected with the air inlet of the first intake valve 21a, the gas outlet of the first intake valve 21b and the first wind turbine 21
Air inlet connects, and the gas outlet of the first wind turbine 21 is connected with the air inlet of the first air outlet valve 21b, the outlet of the first air outlet valve 21b
Mouth is connected with the air inlet of main control valve 3, and the gas outlet of main control valve 3 is connected with the oil storage chamber 200 of crude oil carrier.
Air inlet of the gas outlet of flue gas scrubber 10 also with the second intake valve 22a connects, the outlet of the second intake valve 22a
Mouth is connected with the air inlet of the second wind turbine 22, and the gas outlet of the second wind turbine 22 is connected with the air inlet of the second air outlet valve 22b, and second
The gas outlet of air outlet valve 22b is connected with the air inlet of main control valve 3.
Specifically, wind turbine 20 can come out the fume extraction in flue gas scrubber 10, and then flue gas is pressurizeed and exported.
Main control valve 3 is used for the oil storage chamber 200 whether gas that air outlet valve 20b is controlled to flow out leads to crude oil carrier.
Further, it is additionally provided with oxygen analyser 31 at the air inlet of main control valve 3.By setting oxygen analyser 31
The oxygen content percentage at the air inlet of main control valve 3 can be detected.
Further, bleeder valve 8, the air inlet and main control valve of bleeder valve 8 are additionally provided at the air inlet of main control valve 3
3 air inlet connection, the gas outlet of bleeder valve 8 and atmosphere, and gas is drained into the safety zone of crude oil carrier by bleeder valve 8.
Further, vent valve 32, the air inlet connection master control of vent valve 32 are additionally provided at the gas outlet of main control valve 3
The gas outlet of valve 3 processed, the gas outlet of vent valve 32 and atmosphere.When main control valve 3 is opened, vent valve 32 is closed.
Specifically, it is main when the oxygen content at the air inlet of the detection main control valve 3 of oxygen analyser 31 is higher than setting value
Control valve 3 is closed, and bleeder valve 8 and vent valve 32 are opened completely.The gas that air outlet valve 20b flows out can be discharged in air,
Without leading in the oil storage chamber 200 of crude oil carrier, prevent oxygen content in oil storage chamber 200 excessively high.In the present embodiment, main control is set
Oxygen content at the air inlet of valve 3 is not higher than 7%.
Detection module 30 is used for the actual current value I of real-time detection blower fan 201.Detection module 30 is electrically connected with wind turbine 20.
Control module 40 is used for the actual current value I according to wind turbine 201With the load current value I of wind turbine 200Difference it is exhausted
The connection area of air outlet valve 20b is adjusted to value e.The connection area of wherein air outlet valve 20b points out the air inlet and outlet of air valve 20b
The connection area of mouth.Control module 40 and detection module 30 are electrically connected.
As e ＞ IxAnd I0＞ I1When, by the connection area increase Δ S of air outlet valve 20b1；
As e ＞ IxAnd I0＜ I1When, the connection area of air outlet valve 20b is reduced into Δ S1。
Work as Iy＜ e≤IxAnd I0＞ I1When, by the connection area increase Δ S of air outlet valve 20b2；
Work as Iy＜ e≤IxAnd I0＜ I1When, the connection area of air outlet valve 20b is reduced into Δ S2。
As e≤IyWhen, the connection area for keeping air outlet valve 20b is constant.
Wherein, Ix＞ Iy, Iy≤ 5A, Δ S14% of largest connected area for air outlet valve 20b, Δ S2For air outlet valve 20b's
The 2% of largest connected area.
It should be noted that in the present embodiment, the initial connection area of air outlet valve 20b is 0, often detects primary air fan
20 actual current value I1The connection area of air outlet valve 20b is just increased or reduced into Δ S as stated above1Or it increases or reduces
ΔS2Or it remains unchanged.In another embodiment of the invention, can also in the connection area for adjusting air outlet valve 20b every time,
The connection area of air outlet valve 20b is increased or reduced into Δ S by per second1Or per second increase or reduce Δ S2Or it remains unchanged.
For the embodiment of the present invention by setting detection module and control module, detection module part is used for the reality of real-time detection blower fan
Border current value I1, control module is for the actual current value I according to wind turbine1With the load current value I of wind turbine0Difference it is absolute
Value e adjusts the connection area of air outlet valve, when the actual current value of wind turbine is less than the load current value of wind turbine, then increases air outlet valve
Connection area, when the actual current value of wind turbine is more than the load current value of wind turbine, then reduce the connection area of air outlet valve, lead to
Overregulate the connection area of air outlet valve, thus it is possible to vary the load of wind turbine, so as to change the electric current of wind turbine so that the electric current of wind turbine is protected
It is fixed to keep steady, and prevents wind turbine from generating larger vibration and noise.
Further, flue gas formula inert gas system further includes scrubbing tower feed water valve 11, auxiliary water supply shut-off valve 12, scrubbing tower pump
13rd, scrubbing tower drain valve 14, air intlet pipeline 15.
The water inlet of flue gas scrubber 10 is connected with the water outlet of scrubbing tower feed water valve 11, the water inlet of scrubbing tower feed water valve 11
Mouth is connected with the water outlet of scrubbing tower pump 13, and scrubbing tower feed water valve 11 washs conducting and the break-make of seawater for controlling.Scrubbing tower
Pump 13 is used for extracting seawater.The water outlet connection of scrubbing tower drain valve 14 arranges seawater there are one row's seawater pipe (not shown)
The water outlet of pipe is located at the lower section of the water line M of crude oil carrier at light load, arrange the water outlet of seawater pipe with crude oil carrier eating at light load
The distance of water M lines is Q, Q ＞ 3m.The water outlet of flue gas scrubber 10 is located above the water line N of crude oil carrier full load, and flue gas is washed
The distance for washing the water outlet of tower 10 and the water line N of crude oil carrier full load is P, P ＞ 2.5m.The setting utilizes atmospheric pressure principle,
The seawater in flue gas scrubber 10 can be prevented by suck-back.
The effect of auxiliary water supply shut-off valve 12 is when 13 failure of scrubbing tower pump cannot be in use, be ended by auxiliary water supply
The fire pump that valve 12 connects provides refrigerated sea water, ensures that entire inert gas system remains to work, in addition, when scrubbing tower pump 13 can
During normal work, it is desirable that auxiliary water supply shut-off valve 12 remains off.
Further, pressure sensor and warning device are equipped between scrubbing tower feed water valve 11 and flue gas scrubber 10
(not shown), by the way that pressure sensor is set to can detect the pressure of supply water of flue gas scrubber 10, when pressure of supply water is less than report
During alert value, water supply is smaller in flue gas scrubber 10, the flue gas being flowed into flue gas scrubber 10 can not adequately be washed, this
When wind turbine 20 is kept to close, in order to avoid the flue gas with impurity is entered in oil storage chamber.In the present embodiment, alarming value 1bar,
Warning device can be audible-visual annunciator.
Further, flue gas scrubber 10 is connect with liquid level detection device (not shown), when liquid level detection device is examined
It is more than when setting liquid level to measure the liquid level in flue gas scrubber 10, then warning device is alarmed, and wind turbine 20 stops
Work.And liquid level detection device can set it is two or more, when one of liquid level detection device breaks down, other liquid
Level detecting apparatus can proceed with detection, ensure the reliability of liquid level detection device.
Air intlet pipeline 15 is connected with flue gas scrubber 10, when flue gas formula inert gas system works in purging pattern or real ship
During debugging mode, flue gas takes air valve 1a that can close, and can pass through 15 air-breathing of air intlet pipeline at this time.
Further, flue gas formula inert gas system further includes deck water seal 40 and main shut-off valve 5, and deck water seal 40 includes water seal
Case (not shown), flashback tank have air inlet, gas outlet, water inlet, water outlet, the air inlet and main control valve of flashback tank
3 gas outlet connection, the gas outlet of flashback tank are connected with the air inlet of main shut-off valve 5, and the gas outlet of main shut-off valve 5 is used to connect
Oil storage chamber 200, the water inlet of flashback tank is for the water filling into flashback tank, and the water outlet of flashback tank is for draining, in vertical direction
On, the air inlet of flashback tank is located at the lower section of the gas outlet of flashback tank.Flashback tank is flooded when being filled to the water inlet of flashback tank
Air inlet, and when not flooding the gas outlet of flashback tank, the gas that the air inlet of flashback tank is passed through can be from the outlet of flashback tank
It is flowed out after mouthful, then the gas in the gas outlet of flashback tank will not flow back into the air inlet of flashback tank, can prevent gas backstreaming.
Specifically, deck water seal 40 is arranged on the deck of crude oil carrier.Main shut-off valve 5 is used to control going out for deck water seal 40
Can the flue gas of gas port outflow enter oil storage chamber 200.Flue gas is passed through after main shut-off valve 5 by the gas outlet of main shut-off valve 5
Lead to oil storage chamber 200 to each pipeline.
Further, it is connected in the gas outlet of main shut-off valve 5 on each pipeline between oil storage chamber 200 true equipped with pressure
Empty destructor 9, which is used to carry out pressure protection to each oil storage chamber 200, when some oil storage chamber 200
Pressure is more than the pressure (being generally higher than atmospheric pressure 2100mmWG) of setting or (is usually subatmospheric less than the pressure of setting
When 700mmWG), the pressure vacuum destructor 9 and atmosphere reduce or increase the pressure in oil storage chamber 200, prevent due to ring
Either ocean temperature changes the hypertonia or too low caused in oil storage chamber 200 border temperature.
Further, deck water seal 40 further includes heating unit (not shown), and heating unit is used to heat flashback tank
Interior water.In specific implementation, heating unit can be steam(-)coil, and the steam of heat is passed through in steam(-)coil,
It can be heated by the heat of steam for the water in flashback tank.When ship's navigation to cold area or ice formation, pass through
The heating unit can prevent the water freezing in flashback tank.
Further, flue gas formula inert gas system further includes hydroseal pump 41 and deck water seal drain valve 42, the water inlet of flashback tank
Mouth is connect with the water outlet of hydroseal pump 41, and hydroseal pump 41 is used for extracting seawater, water outlet and the deck water seal drain valve of flashback tank
42 water inlet connection.
Specifically, water seal feed water valve 43, water seal feed water valve are additionally provided between hydroseal pump 41 and the water inlet of flashback tank
43 water inlet is connected with the water outlet of hydroseal pump 41, and the water outlet of water seal feed water valve 43 is connected with the water inlet of flashback tank, is led to
The water filling into flashback tank can be controlled whether by crossing setting water seal feed water valve 43.
In the present embodiment, in the vertical direction, between the water outlet of water seal feed water valve 43 and the water inlet of flashback tank
The peak of pipeline is located at the top of the water inlet of flashback tank, and the distance of the water inlet of the peak and flashback tank of the pipeline is
L, L ＞ 2.5m.The setting utilizes atmospheric pressure principle, when can prevent the hydroseal pump 41 to be all stopped, water in flashback tank from its
Water inlet is flow backwards.
The water outlet of deck water seal drain valve 42 is connected with row's seawater pipe (not shown), arranges the water outlet position of seawater pipe
Below the lightwaterline M of crude oil carrier, and the distance for arranging the water outlet of seawater pipe and the lightwaterline M of crude oil carrier is D, D >=3m.
By this setting, the seawater in flashback tank can be effectively prevent by suck-back.
Further, check-valves 6, the air inlet of check-valves 6 are additionally provided between the water outlet of flashback tank and main shut-off valve 5
It being connected with the gas outlet of flashback tank, the gas outlet of check-valves 6 is connected with the air inlet of main shut-off valve 5, wherein, check-valves 6 is single
To valve, flue gas can only be flowed from the air inlet of check-valves 6 to gas outlet, therefore by setting check-valves 6 that can prevent flue gas from returning
Stream, with deck water seal 40 together, plays the role of duplicate protection.
Further, pressure transmitter 7 is additionally provided at the gas outlet of main shut-off valve 5, by setting pressure transmitter 7 can
To detect the gas pressure on the pipeline between main shut-off valve 5 and oil storage chamber 200, at the same pressure transmitter 7 and bleeder valve 8 with
One control module (not shown) connects, which can be according to the big of the gas pressure that pressure transmitter 7 detects
It is small to control the aperture of bleeder valve 8.
Specifically, the pressure control targe value on the pipeline between main shut-off valve 5 and each oil storage chamber 200 is set, then
The real-time pressure value on the pipeline between main shut-off valve 5 and each oil storage chamber 200 is detected in real time by pressure transmitter 7, when real-time
When pressure value is more than pressure control targe value, increase the aperture of bleeder valve 8, when real-time pressure value is less than pressure control targe value
When, reduce the aperture of bleeder valve 8, wherein bleeder valve 8 is adjustable valve, and the original state of bleeder valve 8 is opening.
It should be noted that in the flue gas formula inert gas system, check-valves 6 is check valve, and blow down valve 1b, flue gas take air valve
1a, seal gas valve 1d, main control valve 3, bleeder valve 8, scrubbing tower feed water valve 11, air outlet valve 20b, vent valve 32 all can be gas
Dynamic regulating valve, in order to control, other valves all can be manual modulation valve.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of flue gas formula inert gas system suitable for crude oil carrier, which is characterized in that the flue gas formula inert gas system includes flue gas
Scrubbing tower, wind turbine, flue gas take air valve, intake valve, air outlet valve, detection module and control module, and the air outlet valve is flow-rate adjustment
Valve；
The flue gas scrubber has air inlet, gas outlet, inlet and outlet, and the water inlet of the flue gas scrubber is used for
The water filling into the flue gas scrubber, for the water outlet of the flue gas scrubber for draining, the flue gas takes the air inlet of air valve
For connecting the boiler chimney of crude oil carrier, the flue gas takes the gas outlet of air valve to be connected with the air inlet of the flue gas scrubber；
The gas outlet of the flue gas scrubber is connected with the air inlet of the intake valve, the gas outlet of the intake valve and the wind
The air inlet connection of machine, the gas outlet of the wind turbine connects with the air inlet of the air outlet valve, the gas outlet of the air outlet valve and
The air inlet connection of the main control valve, the gas outlet of the main control valve are used to connect the oil storage chamber of the crude oil carrier；
The detection module is used to detect the actual current value I of the wind turbine in real time1；
The control module is used for the actual current value I according to the wind turbine1With the load current value I of the wind turbine0Difference
Absolute value e adjusts the connection area of the air outlet valve；
As e ＞ IxAnd I0＞ I1When, by the connection area increase Δ S of the air outlet valve1,
As e ＞ IxAnd I0＜ I1When, the connection area of the air outlet valve is reduced into Δ S1,
Work as Iy＜ e≤IxAnd I0＞ I1When, by the connection area increase Δ S of the air outlet valve2,
Work as Iy＜ e≤IxAnd I0＜ I1When, the connection area of the air outlet valve is reduced into Δ S2,
As e≤IyWhen, the connection area for keeping the air outlet valve is constant, wherein, Ix＞ Iy, Iy≤ 5A, Δ S1For the air outlet valve
Largest connected area 4%, Δ S22% of largest connected area for the air outlet valve.
2. flue gas formula inert gas system according to claim 1, which is characterized in that the flue gas formula inert gas system further includes first
Plate water seal and main shut-off valve, the deck water seal include flashback tank, and the flashback tank has air inlet, gas outlet, water inlet, goes out
The mouth of a river, the air inlet of the flashback tank are connected with the gas outlet of the main control valve, the gas outlet of the flashback tank and the master
The air inlet connection of shut-off valve, the gas outlet of the main shut-off valve are used to connect the oil storage chamber, the water inlet of the flashback tank
For the water filling into the flashback tank, the water outlet of the flashback tank is for draining, in the vertical direction, the flashback tank into
Gas port is located at the lower section of the gas outlet of the flashback tank.
3. flue gas formula inert gas system according to claim 2, which is characterized in that the deck water seal further includes heating dress
It puts, the heating unit is used to heat the water in the flashback tank.
4. flue gas formula inert gas system according to claim 2, which is characterized in that the flue gas formula inert gas system further includes water
Envelope pump and deck water seal drain valve, the water inlet of the flashback tank are connect with the water outlet of the hydroseal pump, and the hydroseal pump is used
In extracting seawater；The water outlet of the flashback tank is connected with the water inlet of the deck water seal drain valve.
5. flue gas formula inert gas system according to claim 2, which is characterized in that the water outlet of the flashback tank and the master
Check-valves is additionally provided between shut-off valve, the air inlet of the check-valves is connected with the gas outlet of the flashback tank, the non-return
The gas outlet of valve is connected with the air inlet of the main shut-off valve.
6. flue gas formula inert gas system according to claim 2, which is characterized in that also set at the gas outlet of the main shut-off valve
Pressure transmitter is equipped with, the air inlet of the main control valve is also communicated with bleeder valve, the air inlet of the bleeder valve and the master
The air inlet connection of control valve, the gas outlet of the bleeder valve and atmosphere.
7. flue gas formula inert gas system according to claim 1, which is characterized in that also set at the gas outlet of the main control valve
Be equipped with vent valve, the air inlet of the vent valve connects the gas outlet of the main control valve, the gas outlet of the vent valve with it is big
Gas connects.
8. flue gas formula inert gas system according to claim 1, which is characterized in that also set at the air inlet of the main control valve
It is equipped with oxygen analyser.
9. flue gas formula inert gas system according to claim 1, which is characterized in that the flue gas formula inert gas system, which further includes, blows
Valve is swept, the gas outlet of the blow down valve takes the air inlet of air valve to connect with the flue gas.
10. flue gas formula inert gas system according to claim 1, which is characterized in that the flue gas formula inert gas system further includes
Scrubbing tower feed water valve, scrubbing tower pump, scrubbing tower drain valve, the water inlet of the flue gas scrubber and the scrubbing tower feed water valve
Water outlet connects, and the water inlet of the scrubbing tower feed water valve is connected with the water outlet that the scrubbing tower pumps, and the scrubbing tower pump is used
In extracting seawater, the water outlet of the flue gas scrubber is connected with the water inlet of the scrubbing tower drain valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111834.XA CN108187452A (en) | 2017-11-13 | 2017-11-13 | A kind of flue gas formula inert gas system suitable for crude oil carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111834.XA CN108187452A (en) | 2017-11-13 | 2017-11-13 | A kind of flue gas formula inert gas system suitable for crude oil carrier |
Publications (1)
| Publication Number | Publication Date |
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| CN108187452A true CN108187452A (en) | 2018-06-22 |
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| CN201711111834.XA Pending CN108187452A (en) | 2017-11-13 | 2017-11-13 | A kind of flue gas formula inert gas system suitable for crude oil carrier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112265628A (en) * | 2020-11-25 | 2021-01-26 | 中船动力有限公司 | Waste heat comprehensive utilization system for crude oil transportation tug fleet |
| CN112619341A (en) * | 2020-11-30 | 2021-04-09 | 南通亚泰工程技术有限公司 | Nearly zero release's inert gas system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201472633U (en) * | 2009-09-15 | 2010-05-19 | 王德荣 | Marine inert gas system |
| CN104895820A (en) * | 2015-07-02 | 2015-09-09 | 东方日立(成都)电控设备有限公司 | Energy-saving optimization control method of moving-blade-adjustable axial flow fan variable-frequency energy-saving system |
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2017
- 2017-11-13 CN CN201711111834.XA patent/CN108187452A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201472633U (en) * | 2009-09-15 | 2010-05-19 | 王德荣 | Marine inert gas system |
| CN104895820A (en) * | 2015-07-02 | 2015-09-09 | 东方日立(成都)电控设备有限公司 | Energy-saving optimization control method of moving-blade-adjustable axial flow fan variable-frequency energy-saving system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112265628A (en) * | 2020-11-25 | 2021-01-26 | 中船动力有限公司 | Waste heat comprehensive utilization system for crude oil transportation tug fleet |
| CN112265628B (en) * | 2020-11-25 | 2024-05-14 | 中船动力有限公司 | Comprehensive utilization system for waste heat of crude oil transportation tugboat fleet |
| CN112619341A (en) * | 2020-11-30 | 2021-04-09 | 南通亚泰工程技术有限公司 | Nearly zero release's inert gas system |
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Application publication date: 20180622 |
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