CN203739732U - Hydraulically powered LNG centrifugal pump - Google Patents
Hydraulically powered LNG centrifugal pump Download PDFInfo
- Publication number
- CN203739732U CN203739732U CN201320855393.5U CN201320855393U CN203739732U CN 203739732 U CN203739732 U CN 203739732U CN 201320855393 U CN201320855393 U CN 201320855393U CN 203739732 U CN203739732 U CN 203739732U
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- China
- Prior art keywords
- centrifugal pump
- hydraulic
- hydraulically powered
- pressure
- liquid
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- Expired - Lifetime
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- 239000007788 liquid Substances 0.000 claims abstract description 49
- 238000009413 insulation Methods 0.000 claims abstract description 22
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 21
- 239000003921 oil Substances 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000002828 fuel tank Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract 1
- 239000003949 liquefied natural gas Substances 0.000 description 17
- 108010066278 cabin-4 Proteins 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000006200 vaporizer Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000003532 endogenous pyrogen Substances 0.000 description 2
- 108010052620 leukocyte endogenous mediator Proteins 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002631 hypothermal effect Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a hydraulically powered LNG centrifugal pump. The hydraulically powered LNG centrifugal pump comprises a traction tanker head of a semi-trailer tanker, a vacuum insulation tank body, a valve cabin, an external pipeline, a walking mechanism and a cryopump liquid drainage system. The cryopump liquid drainage system comprises a hydraulic source, a high-pressure hydraulic oil pipe line and a centrifugal pump driven by a hydraulic motor. The vacuum insulation tank body is installed on the walking mechanism. The valve cabin is connected with a back head sealing part outside the vacuum insulation tank body. The external pipeline and the centrifugal pump driven by the hydraulic motor are placed inside the valve cabin. The hydraulic source is installed on the traction tanker head or the front portion of the semi-trailer tanker. The high-pressure hydraulic oil of the hydraulic source is conveyed to the centrifugal pump driven by the hydraulic motor through a high-pressure oil pipe on the side face of the vacuum insulation tank body. By means of the method, the loading size and transport efficiency of the semi-trailer tanker are increased, the weight and manufacturing cost of the semi-trailer tanker are reduced, the liquid drainage flow is large, liquid conveying pressure is high, the unloading speed is high, matched ground unloading and boosting vaporizers are not needed, self-boosting liquid and BOG losses do not exist, and the economic performance is good.
Description
Technical field
The utility model relates to vacuum insulation transportation tank field, particularly relates to a kind of hydraulically powered LNG centrifugal pump.
Background technology
Liquefied natural gas (LNG) is a kind of energy of clean and effective.In recent years, the production of China's liquefied natural gas, transport and use enter the fast-developing phase.The transportation tank (bicycle and superimposed trailer) of conveying liquified natural gas has three kinds to unload liquid mode at present: adopt vehicle-mounted liquid-unloading pump to unload liquid, adopt ground low-temperature centrifugal pump to unload liquid or adopt the differential liquid that unloads.
Vehicle-mounted immersed pump unloads liquid, and the feed flow of immersed pump is little, is not suitable for amount transport.
Ground low-temperature centrifugal pump unloads liquid, and tank car tank body is to centrifugal pump, and centrifugal pump is oversize to being unloaded between liquid two sections of LNG liquid lines, and being difficult to make system to enter normal work is critical defect, is not adopted in the industry so far.
Pressure differential method unloads liquid, and the tank car of conveying liquified natural gas arrives while unloading liquid point, and dependence ground boosting vaporizer is to tank car supercharging, when the pressure of tank car is when accepting the pressure of tank body, tank car is unloaded to liquid.Adopt pressure differential method to unload liquid, have following shortcoming:
1. while unloading liquid, need to cross blwr vaporization from extraction liquefaction natural gas via in tank car, the steam after vaporization returns to tank car endogenous pyrogen, and to improve the pressure of tank car endogenous pyrogen, the supercharging meeting of tank car causes the loss of liquefied natural gas; 2. when the pressure of receiving tank is during higher than the pressure of tank car, receiving tank must emission gases to reduce the pressure of storage tank; 3. it is longer to unload the liquid time, when the direct motor drive low-temperature centrifugal pump that uses ground unloads liquid, and distant between the liquid-unloading pump entrance of ground of tank car liquid outlet, the liquefied natural gas unloading in liquid flexible pipe is easily vaporized, and causes Cavitation Occurred in Centrifugal Pumps; 4. the motor of pump and control housing need to be explosion-proof, and manufacturing cost is high, use inconvenient.
For existing deficiency of unloading liquid technology, we need to research and develop and a kind ofly be applicable to carry hydraulic-driven low-temperature centrifugation pumping system inflammable, explosive medium, and can be used in the transportation tank of conveying liquified natural gas.
Utility model content
The technical matters that the utility model mainly solves is to provide a kind of hydraulically powered LNG centrifugal pump, can increase load volume and the conveying efficiency of superimposed trailer, reduce the own wt of superimposed trailer, reduce manufacturing cost, unload flow quantity large, conveying fluid pressure is high, unload vehicle speed fast, do not need the supporting ground boosting vaporizer of unloading, easy to use, there is no liquid and BOG loss from supercharging, good economy performance.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of hydraulically powered LNG centrifugal pump is provided, comprise: the tractor of semi-mounted tank car, vacuum insulation tank body, valve cabin, external pipe, traveling gear and cryopump unload liquid system, described cryopump unloads liquid system and comprises hydraulic power source, the centrifugal pump of high-pressure and hydraulic oil pipe line and fluid motor-driven, vacuum insulation tank body is arranged on traveling gear, valve cabin is connected with the external rear head part of vacuum insulation tank, the centrifugal pump of external pipe and fluid motor-driven is arranged in valve cabin, hydraulic power source is arranged on tractor or the front portion of semi-mounted tank car.
In preferred embodiment of the utility model, described external pipe comprises charging line, unloads liquid pipeline, overflow passage, gas discharging and overpressure relief pipeline, from pressure piping, liquidometer and compression indicator pipeline.
In preferred embodiment of the utility model, the centrifugal pump of described fluid motor-driven is fixed by bolt and the angle steel being welded on traveling gear.
In preferred embodiment of the utility model, described hydraulic power source is the HM Hydraulic Motor conveying high-pressure liquid oil to centrifugal pump by high-pressure and hydraulic oil pipe line.
In preferred embodiment of the utility model, the centrifugal pump of described hydraulic power source and fluid motor-driven is split type setting.
In preferred embodiment of the utility model, described hydraulic power source comprises hydraulic oil pump, fuel tank annex, pluger type hydraulic pump, electrical motor, filter, check valve, oil cooler and safety valve.
In preferred embodiment of the utility model, the propulsion source of described hydraulic oil pump is electrical motor.
The beneficial effects of the utility model are: the hydraulically powered LNG centrifugal pump of the utility model load volume is larger, improve the conveying efficiency of superimposed trailer, the own wt that has reduced superimposed trailer, has reduced manufacturing cost, unloads flow quantity large, conveying fluid pressure is high, unload vehicle speed fast, do not need the supporting ground boosting vaporizer of unloading, easy to use, there is no liquid and BOG loss from supercharging, good economy performance.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing, wherein:
Fig. 1 is the structural representation of hydraulically powered LNG centrifugal pump one preferred embodiment of the present utility model;
Fig. 2 is the structural representation of another preferred embodiment of hydraulically powered LNG centrifugal pump of the present utility model;
In accompanying drawing, the mark of each parts is as follows: 1, tractor, 2, hydraulic power source, 3, vacuum insulation tank body, 4, valve cabin, 5, centrifugal pump, 6, traveling gear.
Detailed description of the invention
To the technical scheme in the utility model embodiment be clearly and completely described below, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making all other embodiment that obtain under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1 to Fig. 2, the utility model embodiment comprises:
A kind of hydraulically powered LNG centrifugal pump, comprising: tractor 1, vacuum insulation tank body 3, valve cabin 4, external pipe, traveling gear 6 and the cryopump of semi-mounted tank car unload liquid system.
Described vacuum insulation tank body 3 is arranged on traveling gear 6, and valve cabin 4 is connected with the outer rear head part of vacuum insulation tank body 3, is placed on the crossbeam of traveling gear 6, and external pipe is placed in valve cabin 4.
Wherein, external pipe comprise charging line, unload liquid pipeline, overflow passage, gas discharging and overpressure relief pipeline, from pressure piping, liquidometer and compression indicator pipeline.Pipeline in external pipe and valve are supported on by angle steel and pipe clamp on the base plate in valve cabin 4, and valve operation handle tilts towards valve cabin 4 hatch doors, ensure that valve operation is more convenient.
Traveling gear 6 tops adopt connecting panels and vacuum insulation tank body 3 to assemble, and load onto the entirety that forms automobile superimposed trailer after residue parts, and vehicle frame and vacuum insulation tank body 3 are connected into firmly rigid construction, have played the effect of support vacuum insulation tank body 3.
In the utility model, described low-temperature centrifugal pump unloads liquid system hypothermia pump and unloads the centrifugal pump 5 that liquid system comprises hydraulic power source 2, high-pressure and hydraulic oil pipe line and fluid motor-driven, high pressure liquid force feed from hydraulic power source 2 is delivered to by being arranged on the high-pressure and hydraulic oil pipe line of vacuum insulation tank body 3 sides the HM Hydraulic Motor being contained in vacuum insulation tank body 3 afterbody valve cabins 4, thereby drives centrifugal pump 5.
The hydraulic oil delivery hose of hydraulic power source 2 is connected with the high pressure fuel pipe of vacuum insulation tank body 3 by the quick coupling being arranged on vacuum insulation tank body 3 front heads.
Hydraulic power source 2 connects the HM Hydraulic Motor of centrifugal pump 5 by high-pressure and hydraulic oil pipe line, to HM Hydraulic Motor conveying high-pressure liquid oil, form hydraulic oil circuit.
Described hydraulic power source 2 is split type setting with the centrifugal pump 5 of fluid motor-driven.Wherein, hydraulic power source 2 is arranged on tractor 1, as shown in Figure 1; Or hydraulic power source 2 is arranged on the front portion of semi-mounted tank car, as shown in Figure 2.
The centrifugal pump 5 of fluid motor-driven is arranged in valve cabin 4, fixes by bolt and the angle steel being welded on traveling gear 6.
Described hydraulic power source is made up of hydraulic oil pump, fuel tank annex, pluger type hydraulic pump, electrical motor, filter, check valve, oil cooler and safety valve etc.Wherein hydraulic oil pump is by direct motor drive, and electrical motor is by Xie Yezhan city electric drive, and hydraulic power source 2 is arranged on the tractor away from natural fuels dangerous area, has not needed to take flame proof measure.
The centrifugal pump 5 of described fluid motor-driven is directly driven by HM Hydraulic Motor, does not need electricity consumption, without electro spark ignite (quick-fried) reveal the potential risk of natural fuels.
The hydraulically powered LNG centrifugal pump of the utility model is applied to LNG conveying semi-trailer, and the working process that its cryopump unloads liquid system is:
Plunger type high-pressure hydraulic oil pump is from hydraulic reservoir liquid draw force feed, plunger pump converts the mechanical energy of motor to the liquid energy of liquid oil, more than the pressure of hydraulic oil is increased to 32MPa, the high pressure liquid force feed flowing out from hydraulic oil pump flows into high pressure fuel pipe through distributing valve, high-pressure and hydraulic flexible pipe and quick coupling, finally enters HM Hydraulic Motor.HM Hydraulic Motor can convert the liquid of liquid oil to the wheel rotation of mechanical energy driving centrifugal pump 5, the hydraulic oil warp refluxing from HM Hydraulic Motor, pressuring oil pipe enters oil strainer and oil cooler, final hydraulic return fuel tank, the hydraulic fluid flow rate of supply HM Hydraulic Motor and pressure are by long-range pneumatic proportional valve control, thereby flow and the delivery pressure of the centrifugal pump 5 to fluid motor-driven regulate.
The beneficial effect of the hydraulically powered LNG centrifugal pump of the utility model is:
Adopt HM Hydraulic Motor instead of electric motor to drive the pump housing of centrifugal pump, reduce the use of electric elements, improve safety and reliability, also greatly reduce manufacturing cost simultaneously;
HM Hydraulic Motor volume ratio electrical motor is much smaller, lightweight, by reducing the entirety deadweight of superimposed trailer, is conducive to increase internal dimensions of the loading space and the conveying efficiency of tank car;
When elevated pressures is accepted to storage tank topping up, storage tank, without step-down, has been realized without natural fuels and having been discharged;
The Centrifugal Pump of fluid motor-driven is large, pressure is high, unloads liquid speed fast, has improved and has unloaded liquid efficiency, unloads liquid time decreased approximately 40%.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model description to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Claims (7)
1. a hydraulically powered LNG centrifugal pump, it is characterized in that, comprise: tractor, vacuum insulation tank body, valve cabin, external pipe, traveling gear and the cryopump of semi-mounted tank car unload liquid system, described cryopump unloads the centrifugal pump that liquid system comprises hydraulic power source, high-pressure and hydraulic oil pipe line and fluid motor-driven, vacuum insulation tank body is arranged on traveling gear, valve cabin is connected with the external rear head part of vacuum insulation tank, the centrifugal pump of external pipe and fluid motor-driven is arranged in valve cabin, and hydraulic power source is arranged on tractor or the front portion of semi-mounted tank car.
2. hydraulically powered LNG centrifugal pump according to claim 1, is characterized in that, described external pipe comprises charging line, unloads liquid pipeline, overflow passage, gas discharging and overpressure relief pipeline, from pressure piping, liquidometer and compression indicator pipeline.
3. hydraulically powered LNG centrifugal pump according to claim 1, is characterized in that, the centrifugal pump of described fluid motor-driven is fixed by bolt and the angle steel being welded on traveling gear.
4. hydraulically powered LNG centrifugal pump according to claim 1, is characterized in that, described hydraulic power source is the HM Hydraulic Motor conveying high-pressure liquid oil to centrifugal pump by high-pressure and hydraulic oil pipe line.
5. hydraulically powered LNG centrifugal pump according to claim 1, is characterized in that, the centrifugal pump of described hydraulic power source and fluid motor-driven is split type setting.
6. hydraulically powered LNG centrifugal pump according to claim 1, is characterized in that, described hydraulic power source comprises hydraulic oil pump, fuel tank annex, pluger type hydraulic pump, electrical motor, filter, check valve, oil cooler and safety valve.
7. hydraulically powered LNG centrifugal pump according to claim 6, is characterized in that, the propulsion source of described hydraulic oil pump is electrical motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320855393.5U CN203739732U (en) | 2013-12-24 | 2013-12-24 | Hydraulically powered LNG centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320855393.5U CN203739732U (en) | 2013-12-24 | 2013-12-24 | Hydraulically powered LNG centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203739732U true CN203739732U (en) | 2014-07-30 |
Family
ID=51339577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320855393.5U Expired - Lifetime CN203739732U (en) | 2013-12-24 | 2013-12-24 | Hydraulically powered LNG centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203739732U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084289A (en) * | 2014-06-09 | 2014-10-08 | 灌阳县陈工选矿机械制造有限公司 | Ore washer |
| CN104709155A (en) * | 2015-04-10 | 2015-06-17 | 扬州中集通华专用车有限公司 | Heat-preservation milk transportation tank truck |
-
2013
- 2013-12-24 CN CN201320855393.5U patent/CN203739732U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084289A (en) * | 2014-06-09 | 2014-10-08 | 灌阳县陈工选矿机械制造有限公司 | Ore washer |
| CN104709155A (en) * | 2015-04-10 | 2015-06-17 | 扬州中集通华专用车有限公司 | Heat-preservation milk transportation tank truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
|
| CX01 | Expiry of patent term |