CN201688131U - Automobile-used LNG horizontal welding thermal-insulation gas cylinder self-pressurization device - Google Patents
Automobile-used LNG horizontal welding thermal-insulation gas cylinder self-pressurization device Download PDFInfo
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- CN201688131U CN201688131U CN2010201398352U CN201020139835U CN201688131U CN 201688131 U CN201688131 U CN 201688131U CN 2010201398352 U CN2010201398352 U CN 2010201398352U CN 201020139835 U CN201020139835 U CN 201020139835U CN 201688131 U CN201688131 U CN 201688131U
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Abstract
The utility model discloses an automobile-used LNG horizontal welding thermal-insulation gas cylinder self-pressurization device, which comprises a self-pressurization device, wherein a liquid outlet is formed on a distributing head of a gas cylinder, one end of a liquid-taking pipe extends into the gas cylinder through the liquid outlet, and the other end of the liquid-taking pipe is connected to an inlet of the self-pressurization device through a first pipeline and a first valve; a second pipeline communicated with the liquid-taking valve is arranged between the first pipeline and the first valve; the self-pressurization device is lower than the bottom of the gas cylinder, an outlet of the self-pressurization device is communicated to the gas cylinder through a third pipeline and a gas return valve, and a liquid drain valve is connected between the outlet and the gas return valve through a fourth pipeline. The utility model realizes the continuous self-pressurization by utilizing siphon action, and has the advantages of simple structure and long service life of the gas cylinder.
Description
Technical field
The utility model relates to a kind of automobile-used LNG gas cylinder self-supercharging device, particularly a kind of LNG horizontally welded insulated gas cylinder self-boosting device for vehicle.
Background technique
At present, the fuel gas supply system of known gas-fueled vehicles mainly contains two kinds of compressed natural gas (CNG) and LNG Liquefied natural gas (LNG).LNG Liquefied natural gas is to change rock gas into liquid state and carry out accumulating and use by compression and cooling, and volume ratio is 1:625, is three times of compressed natural gas, thereby it is big to have a filling weight, the advantage that continual mileage is long.
Along with the concern of the whole world to carbon emission, the use of clean energy resource LNG more and more comes into one's own, and the user cost of LNG is lower than fuel oil, and automobile-used LNG gas cylinder is applied on city bus rapidly, the trend of the oriented taxi of the use of LNG gas cylinder, lorry development.
Because the requirement of motor or gas cylinder maintenance in the gas filling of liquefied natural gas station, automobile using process, might cause LNG fluid pressure in the gas cylinder to be lower than the usage requirement of motor car engine, the working pressure 0.3～0.7MPa of motor does not wait at present.Continue supercharging for reaching in the short time supercharging of LNG gas cylinder or automobile in exercising, some gas cylinder has been provided with automatic pressure intensifier to solve the low problem of LNG pressure, but automobile-used LNG welded insulated gas cylinder is generally horizontal, owing to considering reasons such as cold damage, intensity and manufacturing, each outlet all is arranged on the end socket of side, so that can't be arranged to extreme lower position from the supercharging liquid taking port.Now, generally adopt 4 kinds of forms shown in Figure 2 that the supercharging liquid taking port is set, can not realize from supercharging when the LNG liquid level is lower than the supercharging liquid taking port among Fig. 2 (a), (c); Among Fig. 2 (b), (d) one section pressure inlet is arranged in the gas cylinder interlayer, has increased loss of refrigeration capacity, LNG gas cylinder multilayer heat insulation wrapping difficulty, assembling difficulty; Fig. 2 (c), (d) establish the supercharging liquid taking port in addition in end socket position on the lower side, get the weak link that the liquid place is fatigue ruption, get liquid interface and have increased by a cold leak path owing to increased.
The model utility content
Goal of the invention of the present utility model is: at the problem of above-mentioned existence, provide a kind of LNG horizontally welded insulated gas cylinder self-boosting device for vehicle.This LNG horizontally welded insulated gas cylinder self-boosting device for vehicle is skillfully constructed, simple in structure, utilize siphonage, realize continuing from supercharging; Made full use of the intensity of distributing head, had that gas cylinder is simple in structure, the characteristics of long service life.
For achieving the above object, the utility model solves the technological scheme that its technical problem adopts and is:
A kind of LNG horizontally welded insulated gas cylinder self-boosting device for vehicle, comprise automatic pressure intensifier, the distributing head of described gas cylinder is provided with liquid taking port, one end of liquid flowing tube stretches into gas cylinder from liquid taking port, the other end of described liquid flowing tube connects the automatic pressure intensifier import by first pipeline, first valve, be provided with the second pipeline connection liquid taking valve between described first pipeline and first valve, the position of described automatic pressure intensifier is lower than the gas cylinder bottom, described outlet also feeds in the gas cylinder by the 3rd pipeline, return-air valve, is connected with liquid discharging valve by the 4th pipeline between outlet and the return-air valve.
As optimal way, described first pipeline is a vacuum tube.
As optimal way, described first valve is a vacuum valve.
As optimal way, described automatic pressure intensifier is single thorn sheet heat exchanging tube or many root thorns sheet heat exchanging tube in parallel.
As optimal way, the outlet of described automatic pressure intensifier is higher than import.
As optimal way, the afterbody that described liquid flowing tube stretches into gas cylinder one end is inverted U-shaped, and the end of U-shaped stretches in the liquid phase of gas cylinder.
As optimal way, described the 3rd pipeline is entered in the gas cylinder by the pipeline of drawing of safety valve opening.
Adopt said structure, key is:
1, utilizes the position of automatic pressure intensifier to be lower than the gas cylinder bottom, behind the introducing liquid, produce siphonage.The outlet of automatic pressure intensifier is higher than import, makes the LNG after the gasification flow to the automatic pressure intensifier outlet, can not occur backflowing, and can continue to carry out from pressurization.
2, the liquid flowing tube afterbody that stretches into gas cylinder one end is inverted U-shaped, and the end of U-shaped stretches in the liquid phase of gas cylinder, forms sealing gland when automobile is stopped transport, and reduces cold damage, prolongs harmless memory time.
3, liquid taking port is arranged on the gas cylinder distributing head, makes full use of the intensity of distributing head, effectively prolongs the working life of gas cylinder, does not establish the supercharging liquid taking port in addition and can reduce cold damage.
4,, siphonage is continued because first pipeline is a vacuum tube, and first valve is a vacuum valve, and after siphonage formed, liquid flowing tube sealing gland section did not have gas phase.
5, the 3rd pipeline is entered in the gas cylinder by the pipeline of drawing of safety valve opening, need not other opening in gas cylinder, effectively reduces cold damage.
In sum, owing to adopted technique scheme, the beneficial effects of the utility model are:
1, utilizes siphonage, make from pressurization can continue to carry out.
2, reduce cold damage, prolong harmless memory time;
3, made full use of the intensity of distributing head, had that gas cylinder is simple in structure, the characteristics of long service life.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is a structural representation of getting liquid in the prior art from supercharging.
Mark among the figure: 1 gas cylinder, 2 liquid flowing tubes, 3 liquid taking valves, 4 first pipelines, 5 first valves, 6 automatic pressure intensifiers, 7 liquid discharging valves, 8 return-air valves, 9 distributing heads.
Embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
In order to make the purpose of this utility model, technological scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Embodiment: as shown in Figure 1, a kind of LNG horizontally welded insulated gas cylinder self-boosting device for vehicle, comprise automatic pressure intensifier, the distributing head of described gas cylinder is provided with liquid taking port, one end of liquid flowing tube stretches into gas cylinder from liquid taking port, the other end of described liquid flowing tube is by first pipeline, first valve connects the automatic pressure intensifier import, be provided with the second pipeline connection liquid taking valve between described first pipeline and first valve, the position of described automatic pressure intensifier is lower than the gas cylinder bottom, described outlet is also by the 3rd pipeline, return-air valve feeds in the gas cylinder, is connected with liquid discharging valve by the 4th pipeline between outlet and the return-air valve.Wherein, preferred first pipeline is a vacuum tube, first valve is a vacuum valve, automatic pressure intensifier is single thorn sheet heat exchanging tube or many root thorns sheet heat exchanging tube in parallel, be inclined upwardly several angle (with the angle of substantially horizontal) or straight up of automatic pressure intensifier outlet, the afterbody that liquid flowing tube stretches into gas cylinder one end is inverted U-shaped, and the end of U-shaped stretches in the liquid phase of gas cylinder.The 3rd pipeline is entered in the gas cylinder by the pipeline of drawing of safety valve opening.
Because first pipeline is a vacuum tube, first valve is a vacuum valve, and siphonage forms the back, liquid flowing tube sealing gland section does not have gas phase, and siphonage is continued.Be inclined upwardly several angle (with the angle of substantially horizontal) or straight up, like this, the outlet of pressurized machine is higher than import of automatic pressure intensifier outlet makes the LNG after the gasification flow to the automatic pressure intensifier outlet, can not occur backflowing, and can continue to carry out from pressurization.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. LNG horizontally welded insulated gas cylinder self-boosting device for vehicle, comprise automatic pressure intensifier, the distributing head of described gas cylinder is provided with liquid taking port, one end of liquid flowing tube stretches into gas cylinder from liquid taking port, it is characterized in that: the other end of described liquid flowing tube is by first pipeline, first valve connects the automatic pressure intensifier import, be provided with the second pipeline connection liquid taking valve between described first pipeline and first valve, the position of described automatic pressure intensifier is lower than the gas cylinder bottom, the outlet of described automatic pressure intensifier is also by the 3rd pipeline, return-air valve feeds in the gas cylinder, is connected with liquid discharging valve by the 4th pipeline between the outlet of automatic pressure intensifier and the return-air valve.
2. a kind of LNG horizontally welded insulated gas cylinder self-boosting device for vehicle as claimed in claim 1 is characterized in that: described first pipeline is a vacuum tube.
3. a kind of LNG horizontally welded insulated gas cylinder self-boosting device for vehicle as claimed in claim 1 is characterized in that: described first valve is a vacuum valve.
4. a kind of LNG horizontally welded insulated gas cylinder self-boosting device for vehicle as claimed in claim 1 is characterized in that: described automatic pressure intensifier is single thorn sheet heat exchanging tube or many root thorns sheet heat exchanging tube in parallel.
5. a kind of LNG horizontally welded insulated gas cylinder self-boosting device for vehicle as claimed in claim 1 is characterized in that: the outlet of described automatic pressure intensifier is higher than import.
6. as claim 1,2,3,4 or 5 described a kind of LNG horizontally welded insulated gas cylinder self-boosting device for vehicle, it is characterized in that: the afterbody that described liquid flowing tube stretches into gas cylinder one end is inverted U-shaped, and the end of U-shaped stretches in the liquid phase of gas cylinder.
7. a kind of LNG horizontally welded insulated gas cylinder self-boosting device for vehicle as claimed in claim 1 is characterized in that: described the 3rd pipeline is entered in the gas cylinder by the pipeline of drawing of safety valve opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201398352U CN201688131U (en) | 2010-03-25 | 2010-03-25 | Automobile-used LNG horizontal welding thermal-insulation gas cylinder self-pressurization device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201398352U CN201688131U (en) | 2010-03-25 | 2010-03-25 | Automobile-used LNG horizontal welding thermal-insulation gas cylinder self-pressurization device |
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| CN201688131U true CN201688131U (en) | 2010-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201398352U Expired - Fee Related CN201688131U (en) | 2010-03-25 | 2010-03-25 | Automobile-used LNG horizontal welding thermal-insulation gas cylinder self-pressurization device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798972A (en) * | 2010-03-25 | 2010-08-11 | 四川空分设备(集团)有限责任公司 | LNG horizontally welded insulated gas cylinder self-boosting device for vehicle and application method thereof |
| CN102954345A (en) * | 2011-08-17 | 2013-03-06 | 总装备部工程设计研究总院 | Pressurization system of low-temperature heat-insulation storage tank |
| CN104500971A (en) * | 2014-12-25 | 2015-04-08 | 十堰厚发汽车零部件有限公司 | LNG (Liquefied Natural Gas) vehicle-mounted gas cylinder system capable of automatically supercharging |
-
2010
- 2010-03-25 CN CN2010201398352U patent/CN201688131U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798972A (en) * | 2010-03-25 | 2010-08-11 | 四川空分设备(集团)有限责任公司 | LNG horizontally welded insulated gas cylinder self-boosting device for vehicle and application method thereof |
| CN102954345A (en) * | 2011-08-17 | 2013-03-06 | 总装备部工程设计研究总院 | Pressurization system of low-temperature heat-insulation storage tank |
| CN102954345B (en) * | 2011-08-17 | 2015-09-02 | 总装备部工程设计研究总院 | A kind of pressurization system of low-temperature heat-insulation storage tank |
| CN104500971A (en) * | 2014-12-25 | 2015-04-08 | 十堰厚发汽车零部件有限公司 | LNG (Liquefied Natural Gas) vehicle-mounted gas cylinder system capable of automatically supercharging |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20130325 |