CN208058407U - A kind of LNG gas stations - Google Patents
A kind of LNG gas stations Download PDFInfo
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- CN208058407U CN208058407U CN201820601439.3U CN201820601439U CN208058407U CN 208058407 U CN208058407 U CN 208058407U CN 201820601439 U CN201820601439 U CN 201820601439U CN 208058407 U CN208058407 U CN 208058407U
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Abstract
The utility model provides a kind of LNG gas stations, including combined type storage tank and gas station ontology, and gas station ontology includes conveying hydrocarbon pump, tank car booster and the liquid filler connected by several pipelines；Gas station ontology is connected to by LNG input ducts, LNG outlet pipes, BOG pipelines with combined type storage tank；Liquid filler liquid phase pipeline is connected by immersed pump outlet conduit with conveying hydrocarbon pump；Liquid filler gas phase pipeline is connected by LNG input ducts with inlet under inlet, B under the upper inlet of inlet, B, A on the A of combined type storage tank；Conveying hydrocarbon pump is connected by BOG pipelines with the A gas phase mouths of combined type storage tank, B gas phase mouths；Conveying hydrocarbon pump is connected by LNG outlet pipes with the outlet of the medium A of combined type storage tank, medium B outlet.The utility model solves the problems, such as to can not achieve continuous aerating during LNG gas stations unload liquid solve the emission problem of the BOG when gas station aerating amount is little.
Description
Technical field
The utility model belongs to LNG gas stations field, more particularly, to a kind of LNG gas stations.
Background technology
LNG storage tank (LNG tank) is low-temperature storage tank, and the LNG temperature of storage is at -160 DEG C or so.LNG aeratings
It stands and just will produce BOG in the process of running, when the BOG amounts in storage tank are too big, saturated vapour pressure will be too high in LNG storage tank,
Pressure of storage tank height can cause immersed pump outlet pressure and aerating pressure exceeded, cause safety hidden pipe-line system and safety attachment
Suffer from；When the pressure of BOG is more than the setting value of tank safety valve in LNG storage tank, BOG will be discharged into air by safety valve
In, the discharge of BOG not only causes a large amount of wasting of resources, but also can be adversely affected to environment.Gas station was run
Cheng Zhong, when the saturated vapour pressure of LNG in storage tank is too low, immersed pump outlet pressure is not up to standard, and the aerating pressure low aerating time is long,
It will result in user's complaint.In practice, in order to ensure the stabilization of aerating pressure and ensure operational safety, need to adjust storage tank
The saturated vapour pressure of interior LNG is in a certain range.It is also desirable to buy special equipment carries out recycling to BOG, with
The loss of LNG is reduced, the adverse effect caused by environment is reduced.
In storage tank LNG it is fast close to unload liquid level when, unload LNG from LNG tank cars to LNG storage tank, this is known as LNG and unloads liquid stream
Journey.LNG is unloaded in liquid stream journey, is needed the saturated vapour pressure for reducing LNG in storage tank as far as possible, is improved the saturated vapor of LNG in tank car
Then pressure leans on the pressure difference of LNG saturated vapour pressures between LNG tank cars and LNG storage tank to carry out unloading liquid operation.The saturation of LNG in storage tank
When vapour pressure is reduced to normal range (NR) or less, be conducive to the operation of unloading of LNG, but aerating pressure will substantially reduce.Currently, plus
There are two types of common practices when gas station unload liquid stream journey, first, stopping aerating operation when unloading liquid, this can influence the pin of gas station
Amount while the complaint for causing user；Pipeline is switched when second is that unloading liquid and gives user's aerating from LNG tank cars, is not interrupted although doing so
Aerating, but also to make troubles to operation, danger is caused sometimes.
Invention content
In view of this, the utility model is directed to a kind of LNG gas stations, solve in LNG fueling process BOG discharges with
And LNG gas stations unload the problem of liquid can not achieve continuous aerating in the process.
In order to achieve the above objectives, the technical solution of the utility model is realized in：
A kind of LNG gas stations, including combined type storage tank and gas station ontology, gas station ontology include being connected by several pipelines
Conveying hydrocarbon pump, tank car booster and the liquid filler connect；
Gas station ontology is connected to by LNG input ducts, LNG outlet pipes, BOG pipelines with combined type storage tank；
Liquid filler liquid phase pipeline is connected by immersed pump outlet conduit with conveying hydrocarbon pump；Liquid filler gas phase pipeline passes through LNG
Input duct is connected with inlet under inlet, B under the upper inlet of inlet, B, A on the A of combined type storage tank；
Conveying hydrocarbon pump is connected by BOG pipelines with the A gas phase mouths of combined type storage tank, B gas phase mouths；
Conveying hydrocarbon pump is connected by LNG outlet pipes with the outlet of the medium A of combined type storage tank, medium B outlet；
Conveying hydrocarbon pump is connected by immersed pump outlet conduit with LNG input ducts；
Hydrocarbon pump is conveyed by being connected into hydrocarbon pump line road with the mouth of unloading of tank car；
Tank car booster into booster pipeline with into hydrocarbon pump line road by being connected；
Tank car booster is connected by going out booster pipeline with LNG input ducts, the gas phase mouth of tank car by pipeline with go out
Booster pipeline is connected, and the liquid phase mouth of tank car is communicated with into booster pipeline, immersed pump outlet conduit respectively by pipeline；
Liquid filler is connected by liquid filler gas phase pipeline with LNG input ducts；
Liquid filler gas phase pipeline and go out the tie point of booster pipeline and LNG input ducts than immersed pump outlet conduit with
The tie point of LNG input ducts is closer to combined type storage tank.
Further, liquid filler is set side by side with multiple.
Further, it is provided with check valve on immersed pump outlet conduit.
Further, combined type storage tank includes composite can and pipeline, and composite can includes inner tank body and outer tank body, inner tank body and
It is vacuum interlayer between outer tank body, inner tank body is divided into two tanks, respectively A tanks and B tanks, spaced between A tanks and B tanks to set
Set, the side of composite can be provided with the A that pipeline is connected to A tanks survey profusely, the outlet of A inlets, medium A, be connected to B tanks
B survey profusely, the outlet of B inlets, medium B, be both provided with valve on pipeline；
A tanks are responsible for by A and are connected to A tank regulating mechanisms, and the one end of A supervisors in A tanks is located at the top in A tanks, B
Tank is responsible for by B and is connected to B tank regulating mechanisms, and the one end of B supervisors in B tanks is located at the top in B tanks, and A supervisors and B are responsible for
Between be connected to by connecting tube, and be provided in connecting tube from B and be responsible for the pneumatic control valve be responsible for A；
A tank regulating mechanisms include A diffusion mouths and A gas phase mouths, and A diffusion mouths and A gas phase mouths pass through A desorption tubes and A gas respectively
Mutually pipe is connected with A supervisors, and A safety valves are provided on A desorption tubes；
B tank regulating mechanisms include B diffusion mouths and B gas phase mouths, and B diffusion mouths and B gas phase mouths pass through B desorption tubes and B gas respectively
Mutually pipe is connected with B supervisors, and B safety valves are provided on B desorption tubes.
Further, A tanks are connected with A tank liquid level sensing devices, and A tank liquid level sensing devices include A tank gas phase connecting pipes
Road, A tank liquid phases impulse piping, A tank liquid level teletransmissions gas phase mouth, A tank liquid level teletransmission liquid phase mouths, the both ends of A tank gas phase impulse piping
Be separately connected top and the A tank liquid level teletransmission gas phase mouths of A tanks, the both ends of A tank liquid phase impulse piping be separately connected A tanks lower part and
A tank liquid level teletransmission liquid phase mouths, are connected between A tank gas phase impulse piping and A tank liquid phase impulse piping by connection valve, A tank gas phases
Impulse piping and A tanks liquid phase impulse piping are located at the pipeline after connection valve and are connected with live liquid level meter, pressure gauge.
Further, B tanks are connected with B tank liquid level sensing devices, B tank liquid level sensing devices include B tank gas phases impulse piping,
B tank liquid phases impulse piping, B tank liquid level teletransmissions gas phase mouth, B tank liquid level teletransmission liquid phase mouths, the both ends difference of B tank gas phase impulse piping
The top and B tank liquid level teletransmission gas phase mouths, the both ends of B tank liquid phase impulse piping for connecting B tanks are separately connected lower part and the B tanks of B tanks
Liquid level teletransmission liquid phase mouth is connected between B tank gas phase impulse piping and B tank liquid phase impulse piping by connection valve, B tank gas phase pilots
Pipeline and B tank liquid pilot phase pipelines are located at the pipeline after connection valve and are connected with live liquid level meter, pressure gauge.
Further, A inlets include inlet under inlet and A on A, in the upper inlet connecting pipe connection A tanks of A
Top, the lower part under A in inlet connecting pipe connection A tanks.
Further, B inlets include inlet under inlet and B on B, in the upper inlet connecting pipe connection B tanks of B
Top, the lower part under B in inlet connecting pipe connection B tanks.
Further, the design pressure for the volume and A tanks that the volume of A tanks is less than B tanks is more than the design pressure of B tanks.
Further, it is provided with vacuum pumping valve in the outer tank body of composite can.
Further, between A desorption tubes and A gas phase pipes by valve be connected, be arranged in parallel on A desorption tubes there are two A pacify
Full valve, A safety valves are connected to by threeway with A desorption tubes.
Further, between B desorption tubes and B gas phase pipes by valve be connected, be arranged in parallel on B desorption tubes there are two B pacify
Full valve, B safety valves are connected to by threeway with B desorption tubes.
Compared with the existing technology, LNG gas stations described in the utility model have the advantage that：
It solves the problems, such as to can not achieve continuous aerating during LNG gas stations unload liquid, solve in gas station aerating amount
The emission problem of BOG when less, the discharge of BOG had not only caused energy waste but also had caused the destruction to ozone layer, while solving existing
BOG reclaimers are of high cost in technology, energy consumption height and complex structure and other problems.
Description of the drawings
The attached drawing for constituting the part of the utility model is used to provide a further understanding of the present invention, this practicality is new
The illustrative embodiments and their description of type are not constituted improper limits to the present invention for explaining the utility model.?
In attached drawing：
Fig. 1 is the simple structure schematic diagram of the LNG gas stations described in the utility model embodiment；
Fig. 2 is enlarged drawing at I in Fig. 1；
Fig. 3 is enlarged drawing at II in Fig. 1；
Fig. 4 is enlarged drawing at III in Fig. 1；
Fig. 5 is enlarged drawing at IV in Fig. 1；
Fig. 6 is enlarged drawing at V in Fig. 1.
Reference sign：
1- outer tank bodies；2-A tanks；3-B tanks；4-A is surveyed profusely；The upper inlets of 51-A；Inlet under 52-A；6-A media outlets；
7-B is surveyed profusely；The upper inlets of 81-B；Inlet under 82-B；9-B media outlets；10-A is responsible for；11-B is responsible for；12- pneumatic controls
Valve；13-A diffusion mouths；14-A gas phase mouths；15-A safety valves；16-B diffusion mouths；17-B gas phase mouths；18-B safety valves；19-A tanks
Liquid level teletransmission gas phase mouth；20-A tank liquid level teletransmission liquid phase mouths；21-B tank liquid level teletransmission gas phase mouths；22-B tank liquid level teletransmission liquid phases
Mouthful；23- conveys hydrocarbon pump；24- tank car boosters；25- liquid fillers；26-LNG input ducts；27-LNG outlet pipes；28-BOG
Pipeline；29- immersed pump outlet conduits；30- is into hydrocarbon pump line road；The mouth of unloading of 31- tank cars；32- is into booster pipeline；33- goes out to increase
Depressor pipeline；The gas phase mouth of 34- tank cars；The liquid phase mouth of 35- tank cars；36- liquid filler gas phase pipelines；37- liquid filler liquid-phase tubes
Road.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more this feature.It is in the description of the present invention, unless another
It is described, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in figures 1 to 6, a kind of LNG gas stations, including combined type storage tank and gas station ontology, gas station ontology include logical
Cross conveying hydrocarbon pump 23, tank car booster 24 and the liquid filler 25 of several pipeline connections；
Gas station ontology is connected to by LNG input ducts 26, LNG outlet pipes 27, BOG pipelines 28 with combined type storage tank；
Liquid filler liquid phase pipeline 37 is connected by immersed pump outlet conduit 29 with conveying hydrocarbon pump 23；Liquid filler gas phase pipeline 36
Pass through inlet under inlet 52, B under inlet 51, the upper inlets 81 of B, A on the A of LNG input ducts 26 and combined type storage tank
82 are connected；
Conveying hydrocarbon pump 23 is connected by BOG pipelines 28 with the A gas phase mouths 14 of combined type storage tank, B gas phase mouths 17；
Conveying hydrocarbon pump 23 is connected by LNG outlet pipes 27 with the medium A of combined type storage tank outlet 6, B media outlets 9；
Conveying hydrocarbon pump 23 is connected by immersed pump outlet conduit 29 with LNG input ducts 26；
Hydrocarbon pump 23 is conveyed by being connected into hydrocarbon pump line road 30 with the mouth 31 of unloading of tank car；
Tank car booster 24 into booster pipeline 32 with into hydrocarbon pump line road 30 by being connected；
Tank car booster 24 is connected by going out booster pipeline 33 with LNG input ducts 26, and the gas phase mouth 34 of tank car passes through
Pipeline is connected with booster pipeline 33 is gone out, and the liquid phase mouth 35 of tank car is gone out with into booster pipeline 32, immersed pump respectively by pipeline
Mouth pipeline 29 communicates；
Liquid filler 25 is connected by liquid filler gas phase pipeline 36 with LNG input ducts 26；
Liquid filler gas phase pipeline 36 and the tie point for going out booster pipeline 33 and LNG input ducts 26 are exported than immersed pump
The tie point of pipeline 29 and LNG input ducts 26 is closer to combined type storage tank.
There are two above-mentioned liquid filler 25 is set up in parallel.
It is provided with check valve on above-mentioned immersed pump outlet conduit 29.
Said combination formula storage tank includes composite can and pipeline, and composite can includes inner tank body and outer tank body 1, inner tank body and outer tank
It is vacuum interlayer between body 1, inner tank body is divided into two tanks, respectively A tanks 2 and B tanks 3, spaced between A tanks 2 and B tanks 3 to set
Set, the side of composite can be provided with the A that pipeline is connected to A tanks 2 survey profusely 4, A inlets, medium A outlet 6, with B tanks 3
The B of connection survey profusely 7, B inlets, medium B outlet 9, be both provided with valve on pipeline；
A tanks 2 are connected to by A supervisors 10 with A tank regulating mechanisms, and the one end of A supervisors 10 in A tanks 2 is located in A tanks 2
Top, B tanks 3 are connected to by B supervisors 11 with B tank regulating mechanisms, and the one end of B supervisors 11 in B tanks 3 is located at upper in B tanks 3
Portion is connected between A supervisors 10 and B supervisors 11 by connecting tube, and the gas that 11 to A supervisors 10 are responsible for from B is provided in connecting tube
Dynamic control valve 12；
A tank regulating mechanisms include A diffusion mouths 13 and A gas phase mouths 14, and A diffusion mouths 13 and A gas phase mouths 14 are diffused by A respectively
Pipe and A gas phases pipe are connected with A supervisors 10, and A safety valves 15 are provided on A desorption tubes；
B tank regulating mechanisms include B diffusion mouths 16 and B gas phase mouths 17, and B diffusion mouths 16 and B gas phase mouths 17 are diffused by B respectively
Pipe and B gas phases pipe are connected with B supervisors 11, and B safety valves 18 are provided on B desorption tubes.
Above-mentioned A tanks 2 are connected with A tank liquid level sensing devices, and A tank liquid level sensing devices include A tank gas phases impulse piping, A tanks
Liquid phase impulse piping, A tank liquid level teletransmissions gas phase mouth 19, A tank liquid level teletransmissions liquid phase mouth 20, the both ends point of A tank gas phase impulse piping
Not Lian Jie A tanks 2 top and A tank liquid level teletransmissions gas phase mouth 19, the both ends of A tank liquid phase impulse piping be separately connected the lower part of A tanks 2
With A tank liquid level teletransmissions liquid phase mouth 20, it is connected to by connection valve between A tank gas phase impulse piping and A tank liquid phase impulse piping, A tanks
Gas phase impulse piping and A tanks liquid phase impulse piping are located at the pipeline after connection valve and are connected with live liquid level meter, pressure gauge.
Above-mentioned B tanks 3 are connected with B tank liquid level sensing devices, and B tank liquid level sensing devices include B tank gas phases impulse piping, B tanks
Liquid phase impulse piping, B tank liquid level teletransmissions gas phase mouth 21, B tank liquid level teletransmissions liquid phase mouth 22, the both ends point of B tank gas phase impulse piping
Not Lian Jie B tanks 3 top and B tank liquid level teletransmissions gas phase mouth 21, the both ends of B tank liquid phase impulse piping be separately connected the lower part of B tanks 3
With B tank liquid level teletransmissions liquid phase mouth 22, it is connected to by connection valve between B tank gas phase impulse piping and B tank liquid phase impulse piping, B tanks
Gas phase impulse piping and B tank liquid pilot phase pipelines are located at the pipeline after connection valve and are connected with live liquid level meter, pressure gauge.
Above-mentioned A inlets include inlet 52 under inlet 51 and A on A, in upper 51 connecting pipe of the inlet connection A tanks of A 2
Top, the lower part under A in 52 connecting pipe of inlet connection A tanks 2.
Above-mentioned B inlets include inlet 82 under inlet 81 and B on B, in upper 81 connecting pipe of the inlet connection B tanks of B 3
Top, the lower part under B in 82 connecting pipe of inlet connection B tanks 3.
The volume of above-mentioned A tanks 2 is less than the volume of B tanks 3.
The design pressure of above-mentioned A tanks 2 is more than the design pressure of B tanks 3.
1 is provided with vacuum pumping valve in the outer tank body of said combination tank.
It is connected by valve between above-mentioned A desorption tubes and A gas phase pipes, is arranged in parallel on A desorption tubes there are two A safety valves
15, A safety valves 15 are connected to by threeway with A desorption tubes.
It is connected by valve between above-mentioned B desorption tubes and B gas phase pipes, is arranged in parallel on B desorption tubes there are two B safety valves
18, B safety valves 18 are connected to by threeway with B desorption tubes.
Workflow：
In the utility model LNG gas stations adjust storage tank saturated vapor pressure workflow specifically, composite can B tanks 3
In operating status in fueling process, A tanks 2 are in standby.B tanks 3 will produce BOG in operational process, with BOG amounts
The LNG saturated vapor pressures of increase B tanks 3 can increase, will when the LNG saturated vapor pressures of B tanks 3 are increased to beyond normal value
Have an adverse effect to the fueling process of LNG, the exceeded alarm of aerating pressure, filling machine safety valve superpressure take-off is caused to diffuse and add
The problems such as air pipe superpressure.The pneumatic control valve 12 that B is responsible between 11 and A supervisors 10 is opened at this time, and the BOG in B tanks 3 will
By B supervisors 11, pneumatic control valve 12 and A supervisors 10, the top of A tanks 2 is entered, when the saturated vapor pressure in B tanks 3 drops to
After normal value, pneumatic control valve 12 is closed, realizes the effect for reducing LNG saturated vapor pressures in B tanks 3.
When LNG gas stations aerating amount is larger, the LNG saturated vapour pressures in B tanks 3 can continuously decrease, as LNG in B tanks 3
When saturated vapour pressure is too low, the relatively low Dewar bottle that cannot fill it up with LNG automobiles of 25 outlet pressure of liquid filler even can not when serious
Filling operation is completed, the normal operation for seriously affecting gas station carries out.It is pneumatic between 10 and B of opening A supervisors supervisors 11 at this time
The BOG of control valve 12,2 internal upper part of A tanks will be responsible for 10, pneumatic control valve 12 and B supervisors 11 by A, enter in B tanks 3
Pneumatic control valve 12 is closed in top after the saturated vapor pressure in B tanks 3 is raised to normal value, completes to increase LNG saturations in B tanks 3
The adjustment effect of vapour pressure.Such regulative mode carries out supercharging by booster gasification LNG than in the prior art and has saved cold
Loss, be the adjusting method of energy-conservation of consumption reduction.
The workflow of combined type storage tank BOG recycling is specifically, B tanks 3 are in operating status in fueling process, at A tanks 2
In standby mode.B tanks 3 will produce BOG in operational process, as the LNG saturated vapor pressures of the increase B tanks 3 of BOG amounts can increase,
The temperature of the LNG of B tanks 3 also can accordingly rise, in order to avoid the BOG in discharge B tanks 3 causes unnecessary waste and is made to environment
At pollution, the valve V8 being located on B supervisors 11 is opened at this time, then opens the valve exported positioned at medium A on 6 pipelines, in B tanks 3
BOG gone out by B supervisors 11, valve V8, B gas phase mouth 17, BOG pipelines 28, conveying hydrocarbon pump 23, LNG outlet pipes 27, medium A
Valve on mouth 6 and its pipeline, enters the lower part of A tanks 2, the temperature due to the LNG temperature of A tanks 2 less than the generation of B tanks 3 BOG,
The BOG that A tanks 2 are entered by B tanks 3 is liquefied again by the LNG of A tanks 2, and BOG is recycled recycling.Reduce expensive BOG to return
The investment of special equipment is received, meanwhile, save the power consumption of BOG special equipments.
LNG unloads workflow specifically, when the LNG of B tanks 3 is in low liquid level, and LNG tank cars, which drive into, to be unloaded parking stall connection and unload
Vehicle hose is ready for LNG and unloads operation.A tanks 2 are in operating status at this time, and A tanks 2 may be implemented to LNG during unloading
Automobile carries out aerating.Since the operating pressure of A tanks 2 is after being adjusted saturated vapor pressure and recycling BOG, higher than B tanks 3
Operating pressure needs the saturated vapour pressure for suitably reducing A tanks 2, so as to normally add before LNG tank cars unload LNG to B tanks 3
Gas.Specific operation is the valve V1 opened on inlet 51 on the A of A tanks 2, opens LNG tank car liquid phase hand-operated valves
SV02 opens 24 entrance autocontrol valve PSV01 of tank car booster, opens the BOG to unload in autocontrol valve PSV03, A tank 2
By the upper inlet 51 of upper liquid feed valve V1, A, LNG input ducts 26, the autocontrol valve PSV03 that unloads, immersed pump outlet conduit
29,24 entrance autocontrol valve PSV01, LNG tank car liquid phase hand-operated valve SV02 of tank car booster, then by unload liquid phase hose and
The liquid phase mouth 35 of tank car, enters the lower part of LNG tank cars, and the BOG of A tanks 2 is cooled down again by the lower LNG of LNG slot vehicle interior temperatures
Again be liquefied as LNG, when in A tanks 2 pressure reach normal value, LNG tank car pressure reaches unload pressure after, close LNG liquid phases
Hand-operated valve SV02 stops the BOG reclaimer operations of A tanks 2.The manual liquid valve SV01 of LNG are opened, the valve SV04 that unloads manually is opened, beats
Start discharging vehicle autocontrol valve PSV03, opens turbocharger inlet valve PSV01, starts to unload LNG in B tanks 3, until the liquid level of B tanks 3
Reach the upper limit and unloads full LNG.At this point, B tanks 3 enter working condition, remaining LNG is discharged to A tanks 2 by LNG tank cars, and completion is entirely unloaded
Liquid process.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (9)
1. a kind of LNG gas stations, it is characterised in that：Including combined type storage tank and gas station ontology, gas station ontology includes passing through
Conveying hydrocarbon pump (23), tank car booster (24) and the liquid filler (25) of several pipeline connections；
Gas station ontology is connected by LNG input ducts (26), LNG outlet pipes (27), BOG pipelines (28) and combined type storage tank
It is logical；
Liquid filler liquid phase pipeline (37) is connected by immersed pump outlet conduit (29) with conveying hydrocarbon pump (23)；Liquid filler gas phase pipeline
(36) pass through inlet under inlet (51), the upper inlets of B (81), A on the A of LNG input ducts (26) and combined type storage tank
(52), inlet (82) is connected under B；
Conveying hydrocarbon pump (23) is connected by BOG pipelines (28) with the A gas phase mouths (14) of combined type storage tank, B gas phase mouths (17)；
It conveys hydrocarbon pump (23) and (9) phase is exported by LNG outlet pipes (27) and the medium A outlet (6) of combined type storage tank, medium B
Even；
Conveying hydrocarbon pump (23) is connected by immersed pump outlet conduit (29) with LNG input ducts (26)；
Hydrocarbon pump (23) is conveyed by being connected into hydrocarbon pump line road (30) with the mouth of unloading (31) of tank car；
Tank car booster (24) into booster pipeline (32) with into hydrocarbon pump line road (30) by being connected；
Tank car booster (24) is connected by going out booster pipeline (33) with LNG input ducts (26), the gas phase mouth (34) of tank car
Be connected with booster pipeline (33) is gone out by pipeline, the liquid phase mouth (35) of tank car by pipeline respectively with into booster pipeline
(32), immersed pump outlet conduit (29) communicates；
Liquid filler (25) is connected by liquid filler gas phase pipeline (36) with LNG input ducts (26)；
Liquid filler gas phase pipeline (36) and go out booster pipeline (33) and the tie point of LNG input ducts (26) goes out than immersed pump
The tie point of mouthful pipeline (29) and LNG input ducts (26) is closer to combined type storage tank.
2. LNG gas stations according to claim 1, it is characterised in that：Liquid filler (25) is set side by side with multiple.
3. LNG gas stations according to claim 2, it is characterised in that：It is provided on immersed pump outlet conduit (29) unidirectional
Valve.
4. LNG gas stations according to claim 3, it is characterised in that：Combined type storage tank includes composite can and pipeline, combination
Tank includes inner tank body and outer tank body (1), is vacuum interlayer between inner tank body and outer tank body (1), and inner tank body is divided into two tanks, respectively
For A tanks (2) and B tanks (3), spaced setting between A tanks (2) and B tanks (3), the side of composite can is provided with pipeline and A
The A of tank (2) connection surveys profusely (4), A inlets, medium A outlet (6), the B being connected to B tanks (3) and surveys profusely (7), B inlets, B
Media outlet (9) is both provided with valve on pipeline；
A tanks (2) are connected to by A supervisors (10) with A tank regulating mechanisms, and one end that A supervisors (10) are in A tanks (2) is located at A tanks
(2) top in, B tanks (3) are connected to by B supervisors (11) with B tank regulating mechanisms, and B supervisors (11) are in one end in B tanks (3)
Top in B tanks (3), A is responsible between (10) are responsible for (11) with B and is connected to by connecting tube, and is provided in connecting tube from B
It is responsible for the pneumatic control valve (12) that (11) are responsible for (10) to A；
A tank regulating mechanisms include A diffusion mouths (13) and A gas phase mouths (14), and A diffusion mouths (13) and A gas phase mouths (14) pass through A respectively
Desorption tube and A gas phases pipe are connected with A supervisors (10), and A safety valves (15) are provided on A desorption tubes；
B tank regulating mechanisms include B diffusion mouths (16) and B gas phase mouths (17), and B diffusion mouths (16) and B gas phase mouths (17) pass through B respectively
Desorption tube and B gas phases pipe are connected with B supervisors (11), and B safety valves (18) are provided on B desorption tubes.
5. LNG gas stations according to claim 4, it is characterised in that：A tanks (2) are connected with A tank liquid level sensing devices, A tanks
Liquid level sensing device includes A tank gas phases impulse piping, A tank liquid phases impulse piping, A tank liquid level teletransmission gas phase mouths (19), A tank liquid levels
The both ends of teletransmission liquid phase mouth (20), A tank gas phase impulse piping are separately connected top and the A tank liquid level teletransmission gas phase mouths of A tanks (2)
(19), the both ends of A tanks liquid phase impulse piping are separately connected lower part and the A tank liquid level teletransmission liquid phase mouths (20) of A tanks (2), A tank gas phases
It is connected to by connection valve between impulse piping and A tank liquid phase impulse piping, A tank gas phase impulse piping and A tank liquid phase impulse piping
Pipeline after connection valve is connected with live liquid level meter, pressure gauge.
6. LNG gas stations according to claim 4, it is characterised in that：B tanks (3) are connected with B tank liquid level sensing devices, B tanks
Liquid level sensing device includes B tank gas phases impulse piping, B tank liquid phases impulse piping, B tank liquid level teletransmission gas phase mouths (21), B tank liquid levels
The both ends of teletransmission liquid phase mouth (22), B tank gas phase impulse piping are separately connected top and the B tank liquid level teletransmission gas phase mouths of B tanks (3)
(21), the both ends of B tanks liquid phase impulse piping are separately connected lower part and the B tank liquid level teletransmission liquid phase mouths (22) of B tanks (3), B tank gas phases
It is connected to by connection valve between impulse piping and B tank liquid phase impulse piping, B tank gas phase impulse piping and B tank liquid pilot phase pipelines
Pipeline after connection valve is connected with live liquid level meter, pressure gauge.
7. LNG gas stations according to claim 4, it is characterised in that：A inlets include under inlet on A (51) and A into
Liquid mouth (52), the upper inlets of A (51) connecting pipe connect the top in A tanks (2), and inlet (52) connecting pipe connects A tanks under A
(2) lower part in.
8. LNG gas stations according to claim 4, it is characterised in that：B inlets include under inlet on B (81) and B into
Liquid mouth (82), the upper inlets of B (81) connecting pipe connect the top in B tanks (3), and inlet (82) connecting pipe connects B tanks under B
(3) lower part in.
9. LNG gas stations according to claim 4, it is characterised in that：The volume of A tanks (2) is less than the volume and A of B tanks (3)
The design pressure of tank (2) is more than the design pressure of B tanks (3).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506721A (en) * | 2018-04-25 | 2018-09-07 | 天津良华新能源科技有限公司 | A kind of gas station with combined type storage tank |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506721A (en) * | 2018-04-25 | 2018-09-07 | 天津良华新能源科技有限公司 | A kind of gas station with combined type storage tank |
| CN108506721B (en) * | 2018-04-25 | 2023-10-10 | 天津良华新能源科技股份有限公司 | A kind of having Combined type filling station of storage tank |
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