CN106499951A - A kind of liquefied natural gas carrier vehicle with pressure monitor function - Google Patents
A kind of liquefied natural gas carrier vehicle with pressure monitor function Download PDFInfo
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- CN106499951A CN106499951A CN201510557105.1A CN201510557105A CN106499951A CN 106499951 A CN106499951 A CN 106499951A CN 201510557105 A CN201510557105 A CN 201510557105A CN 106499951 A CN106499951 A CN 106499951A
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Abstract
The invention discloses a kind of liquefied natural gas carrier vehicle with pressure monitor function, including locomotive and the LNG storage tank being arranged on locomotive, the LNG storage tank includes interior tank body and outer tank body, is provided with closed vacuum heat-insulation interlayer between interior tank body and outer tank body；Which is provided with two pressure transducers, by pressure condition in two pressure transducer real-time monitoring inner canister bodies, plays a part of dual fail-safe；Vacuum detecting and control device is provided with, so as to ensure the vacuum heat-insulation of interlayer, prevents interior tank body thermal stress increase from producing dangerous；Liquid circulation line is provided with, vortex phenomenon is prevented；It is provided with liquid level detection device；It is additionally provided with inert gas import and air vent.
Description
Technical field
The invention belongs to technical field transported safely by liquefied natural gas, relate in particular to a kind of with pressure monitor function
Liquefied natural gas carrier vehicle.
Background technology
Natural gas is inflammable and explosive fuel, and natural gas will be liquefied as through ultralow temperature (- 162 DEG C) normal pressure in storage transport
Liquefied natural gas LNG (Liquefied Natural Gas), the storage temperature very bottom of LNG and the danger for being susceptible to explode
And there is no the certain potential safety hazard of person in its filling and storage transportation, this is just to its storage facilities and means of transport
Safe and reliable strict demand is just proposed.
Content of the invention
It is an object of the invention to overcoming the deficiencies in the prior art, there is provided a kind of liquefied natural gas with pressure monitor function
Transport vehicle.
The present invention employs the following technical solutions to realize：
A kind of liquefied natural gas carrier vehicle with pressure monitor function, including locomotive and the LNG being arranged on locomotive storages
Tank, the LNG storage tank include interior tank body and outer tank body, are provided with closed vacuum heat-insulation folder between interior tank body and outer tank body
Layer；
Interior tank body is provided with liquid entrance by pipeline, and arranges the first valve on pipeline,
The top of interior tank interior is provided with exhaust apparatus, and the exhaust apparatus air vent external with outer tank is connected by pipeline,
And the second valve and first pressure sensor and second pressure sensing is provided with air vent on the pipeline that exhaust apparatus is connected
Device；
The bottom of interior tank interior is provided with noble gases uniform distributor, and noble gases uniform distributor is external with outer tank
Inert gas import is connected by pipeline, and on the pipeline that noble gases uniform distributor is connected with inert gas import
It is provided with the 3rd valve；
Vacuum heat-insulation interlayer between interior tank body and outer tank body is provided with vacuumizing and exhausting mouth by pipeline, and on pipeline according to
Secondary it is provided with vacuum degree measurement sensor, the 4th valve and vacuum pump；
It is provided with liquid circulation lines in vacuum heat-insulation interlayer between interior tank body and outer tank body, liquid circulation lines are followed
Ring import is arranged on the bottom of interior tank body, and the loop exit of liquid circulation lines is arranged on the top of interior tank body, liquid circulation
The 5th valve and circulating pump are set gradually along circulation import to loop exit on pipeline；
One end of interior tank body and outer tank body is provided with level gauging pipeline, the top with interior tank body suitable for reading of level gauging pipeline
End is connected, and the Xia Kou of level gauging pipeline is connected with the bottom of interior tank body, on level gauging pipeline along suitable for reading under
Mouth is disposed with the 6th valve, liquidometer and the 7th valve；
The first pressure sensor, second pressure sensor and vacuum degree measurement sensor respectively be arranged on locomotive driving
First pressure on the console of room shows that table, second pressure show that table and vacuum show table electrical connection.
In above-mentioned technical proposal, outer tank body is provided with relief valve.
The advantages of the present invention are：
By pressure condition in first pressure sensor and second pressure sensor real-time monitoring inner canister body, when pressure is excessive
Control the second valve and open internal tank interior and deflated to prevent pressure increase and occur quick-fried to reduce the pressure in inner canister body
Fried；Being monitored using first pressure sensor and second pressure sensor simultaneously can prevent because of one of pressure sensing
Device failure and cause potential safety hazard, so as to increased the effectiveness of pressure monitoring, play a part of dual fail-safe.
(the situation that is especially canned first or there is more air in interior tank body when the canned work of natural gas is carried out
Under), noble gases are filled with into inner storage tank by inert gas import and noble gases uniform distributor, and pass through aerofluxuss
Air in inner storage tank is discharged by device from air vent, so that the content in the gas in inner canister body reaches safe requirement,
Prevent air and natural gas mixing from causing danger.
By the vacuum in vacuum degree measurement sensor real-time monitoring interlayer, (interior tank body and outer tank when vacuum declines
Between body, interlayer can not possibly be completely closed, and its vacuum slowly can decline under normal circumstances), vacuum simultaneously opened by the 4th valve
Pump work carries out evacuation, so as to ensure the vacuum heat-insulation of interlayer, prevents interior tank body thermal stress increase from producing dangerous.
The liquefied natural gas of the multiple filling in inner canister body can be made to be sufficiently mixed uniformly by open the circulation pump and the 5th valve,
Prevent vortex phenomenon (during LNG Storage, Transport, it may occur that a kind of non-stability phenomenon for being known as being vortexed.Whirlpool
Rotation be due to filling new LNG liquid in the low temperature storing tank for have been loaded with LNG, or due to LNG in nitrogen preferential evaporation
And it is layered the liquid in storage tank.Each layer liquid after layering is formed each solely under the heating that storage tank perisporium leaks heat
Vertical free convection circulation.The circulation makes the density of each layer liquid constantly change, when the density of adjacent two layers liquid near
During patibhaga-nimitta etc., two liquid layers will occur strong mixing, and so as to cause overheated liquefied natural gas in storage tank, evaporation is drawn in a large number
The accident of sending out).
The first pressure sensor of LNG storage tank, second pressure sensor and vacuum degree measurement sensor respectively be arranged on machine
First pressure on car driver's cabin console shows that table, second pressure show that table and vacuum show table electrical connection, so may be used
So that the safe condition of driver's convenient real-time monitoring LNG storage tank in driver's cabin in driving procedure.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of the LNG storage tank in the present invention.
Fig. 3 is the structural representation of the locomotive driving cabin console in the present invention.
Wherein：1 is locomotive, and 2 is LNG storage tank, and G-1 is interior tank body, and G-2 is outer tank body, and a is exhaust apparatus, b
For noble gases uniform distributor, K1 is liquid entrance, and K2 is air vent, and K3 is inert gas import, and K4 is
Vacuumizing and exhausting mouth, L1 is liquid circulation lines, and L2 is level gauging pipeline, and P1 is first pressure sensor, and P2 is
Second pressure sensor, R are vacuum degree measurement sensor, and LG is liquidometer, and D1 is vacuum pump, and D2 is circulating pump,
V1 is the first valve, and V2 is the second valve, and V3 is the 3rd valve, and V4 is the 4th valve, and V5 is the 5th valve, and V6 is the 6th valve,
V7 is the 7th valve, and S1 is relief valve, and P1-1 is that first pressure shows table, and P2-1 is that second pressure shows that table, R-1 are
Vacuum shows table.
Specific embodiment
Technical scheme is further illustrated with reference to specific embodiment.
As shown in Figure 1, a kind of liquefied natural gas carrier vehicle with pressure monitor function involved in the present invention includes machine
Car 1 and the LNG storage tank 2 being arranged on locomotive；As shown in Figure 2, the LNG storage tank 2 includes interior tank body G-1
With outer tank body G-2, interior tank body be used for store liquefied natural gas, be provided between interior tank body G-1 and outer tank body G-2 closed
Vacuum heat-insulation interlayer, realize that by vacuum heat-insulation interlayer the liquefied natural gas of interior tank interior is heat-insulated with the external world, with
Liquefied natural gas is avoided to raise the danger that vaporization causes the pressure of interior tank body to increase and blast occurs because of temperature.
Interior tank body G-1 is provided with liquid entrance K1 by pipeline, and arranges the first valve V1 on pipeline, by liquid
Import and export K1 and complete the canned and discharging operation to liquefied natural gas, the first valve V1 controls the unlatching of liquid entrance K1
And closed mode.
Top inside interior tank body G-1 is provided with exhaust apparatus a, and the exhaust apparatus a air vent K2 external with outer tank pass through
Pipeline is connected, and is provided with the second valve V2 and first pressure with air vent K2 on the pipeline that exhaust apparatus a is connected
Sensor P1 and second pressure sensor P2；In first pressure sensor P1 and second pressure sensor P2 real-time monitorings
Pressure condition in tank body G-1, control when pressure is excessive second valve V2 open deflated inside internal tank body G-1 with
Reducing the pressure in inner canister body prevents pressure increase and explodes；Sensed using first pressure sensor P1 and second pressure
Device P2 is monitored simultaneously can be prevented from causing potential safety hazard because of one of pressure transducer failure, so as to increased pressure
The effectiveness of power monitoring, plays a part of dual fail-safe.
Bottom inside interior tank body G-1 is provided with noble gases uniform distributor b, noble gases uniform distributor b with outer
Inert gas import K3 outside tank body is connected by pipeline, and in noble gases uniform distributor b and inert gas import
The 3rd valve V3 is provided with the pipeline that K3 is connected；When the canned work of natural gas is carried out (especially canned first or
In the case of there is more air in interior tank body), in order to ensure safety, by inert gas import K3 and noble gases
Uniform distributor b is filled with noble gases into inner storage tank, and by exhaust apparatus a by the air in inner storage tank from air vent
K2 is discharged, so that the content in the gas in inner canister body reaches safe requirement, prevents air and natural gas mixing from endangering
Danger.
Vacuum heat-insulation interlayer between interior tank body G-1 and outer tank body G-2 is provided with vacuumizing and exhausting mouth K4 by pipeline, and
Vacuum degree measurement sensor R, the 4th valve V4 and vacuum pump D1 is disposed with pipeline；Passed by vacuum degree measurement
Vacuum in sensor R real-time monitoring the interlayers, (interlayer between interior tank body G-1 and outer tank body G-2 when vacuum declines
Can not possibly be completely closed, its vacuum slowly can decline under normal circumstances), the 4th valve V4 opens vacuum pump D1 works simultaneously
Evacuation is carried out, so as to ensure the vacuum heat-insulation of interlayer, prevents interior tank body thermal stress increase from producing dangerous.
Liquid circulation lines L1 is provided with vacuum heat-insulation interlayer between interior tank body G-1 and outer tank body G-2, liquid is followed
The circulation import of endless tube road L1 is arranged on the bottom of interior tank body G-1, in the loop exit of liquid circulation lines L1 is arranged on
The top of tank body G-1, sets gradually the 5th valve V5 and circulation along circulation import to loop exit on liquid circulation lines L1
Pump D2；The liquefied natural gas of the multiple filling in inner canister body can be made abundant by open the circulation pump D2 and the 5th valve V5
Mix homogeneously, prevent vortex phenomenon (during LNG Storage, Transport, it may occur that a kind of be known as being vortexed non-steady
Property phenomenon.Vortex be due to filling new LNG liquid in the low temperature storing tank for have been loaded with LNG, or due to LNG in
Nitrogen preferential evaporation and be layered the liquid in storage tank.Each layer liquid after layering storage tank perisporium leak heat heating under,
Form each independent free convection circulation.The circulation makes the density of each layer liquid constantly change, when adjacent two layers liquid
During the density approximately equal of body, two liquid layers will occur strong mixing, so as to cause overheated liquefied natural gas in storage tank
Evaporate in a large number accidents caused).
The left end of interior tank body G-1 and outer tank body G-2 is provided with level gauging pipeline L2, level gauging pipeline L2's is upper
Mouth is connected with the top of interior tank body G-1, and the Xia Kou of level gauging pipeline L2 is connected with the bottom of interior tank body G-1,
The 6th valve V6, liquidometer LG and the 7th valve V7 are disposed with along mouth suitable for reading to lower on level gauging pipeline；By liquid
Liquid level in the meter LG detection inner canister bodies of position.
As shown in figure 3, first pressure sensor P1, the second pressure sensor P2 of LNG storage tank and vacuum degree measurement are passed
Sensor R respectively with the first pressure display table P1-1, second pressure display table P2-1 being arranged on locomotive driving cabin console
Show that the pressure signal of detection is passed to first pressure display table by table R-1 electrical connections, first pressure sensor P1 with vacuum
P1-1 shows that the pressure signal of detection is passed to second pressure display table P2-1 and shows pressure by pressure, second pressure sensor P2
The vacuum signal of detection is passed to vacuum display table R-1 and shows vacuum by power, vacuum display table R-1, so may be used
So that the safe condition of driver's convenient real-time monitoring LNG storage tank in driver's cabin in driving procedure.
Relief valve S1 is provided with outer tank body G-2.
Exemplary description has been done to the present invention above, it should explanation, in the case of the core without departing from the present invention,
Any simple deformation, modification or other skilled in the art can not spend the equivalent of creative work to fall
Enter protection scope of the present invention.
Claims (2)
1. a kind of liquefied natural gas carrier vehicle with pressure monitor function, including locomotive and the LNG being arranged on locomotive
Storage tank, it is characterised in that：The LNG storage tank includes interior tank body and outer tank body, is provided with close between interior tank body and outer tank body
The vacuum heat-insulation interlayer for closing, it is characterised in that：
Interior tank body is provided with liquid entrance by pipeline, and arranges the first valve on pipeline；
The top of interior tank interior is provided with exhaust apparatus, and the exhaust apparatus air vent external with outer tank is connected by pipeline,
And the second valve and first pressure sensor and second pressure sensing is provided with air vent on the pipeline that exhaust apparatus is connected
Device；
The bottom of interior tank interior is provided with noble gases uniform distributor, and noble gases uniform distributor is external with outer tank
Inert gas import is connected by pipeline, and on the pipeline that noble gases uniform distributor is connected with inert gas import
It is provided with the 3rd valve；
Vacuum heat-insulation interlayer between interior tank body and outer tank body is provided with vacuumizing and exhausting mouth by pipeline, and on pipeline according to
Secondary it is provided with vacuum degree measurement sensor, the 4th valve and vacuum pump；
It is provided with liquid circulation lines in vacuum heat-insulation interlayer between interior tank body and outer tank body, liquid circulation lines are followed
Ring import is arranged on the bottom of interior tank body, and the loop exit of liquid circulation lines is arranged on the top of interior tank body, liquid circulation
The 5th valve and circulating pump are set gradually along circulation import to loop exit on pipeline；
One end of interior tank body and outer tank body is provided with level gauging pipeline, the top with interior tank body suitable for reading of level gauging pipeline
End is connected, and the Xia Kou of level gauging pipeline is connected with the bottom of interior tank body, on level gauging pipeline along suitable for reading under
Mouth is disposed with the 6th valve, liquidometer and the 7th valve；
The first pressure sensor, second pressure sensor and vacuum degree measurement sensor respectively be arranged on locomotive driving
First pressure on the console of room shows that table, second pressure show that table and vacuum show table electrical connection.
2. a kind of liquefied natural gas carrier vehicle with pressure monitor function according to claim 1, it is characterised in that：
Outer tank body is provided with relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510557105.1A CN106499951A (en) | 2015-09-06 | 2015-09-06 | A kind of liquefied natural gas carrier vehicle with pressure monitor function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510557105.1A CN106499951A (en) | 2015-09-06 | 2015-09-06 | A kind of liquefied natural gas carrier vehicle with pressure monitor function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106499951A true CN106499951A (en) | 2017-03-15 |
Family
ID=58287617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510557105.1A Pending CN106499951A (en) | 2015-09-06 | 2015-09-06 | A kind of liquefied natural gas carrier vehicle with pressure monitor function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106499951A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113903140A (en) * | 2021-09-10 | 2022-01-07 | 武汉中极氢能源发展有限公司 | Method, device and system for prompting driving information, storage medium and processor |
| CN115234825A (en) * | 2022-07-21 | 2022-10-25 | 湖北锦盛天然气有限公司 | Remote control's vertical storage tank of LNG |
-
2015
- 2015-09-06 CN CN201510557105.1A patent/CN106499951A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113903140A (en) * | 2021-09-10 | 2022-01-07 | 武汉中极氢能源发展有限公司 | Method, device and system for prompting driving information, storage medium and processor |
| CN115234825A (en) * | 2022-07-21 | 2022-10-25 | 湖北锦盛天然气有限公司 | Remote control's vertical storage tank of LNG |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170315 |