CN104235597A - Horizontal overcharge preventing LNG storage tank - Google Patents
Horizontal overcharge preventing LNG storage tank Download PDFInfo
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- CN104235597A CN104235597A CN201410464556.6A CN201410464556A CN104235597A CN 104235597 A CN104235597 A CN 104235597A CN 201410464556 A CN201410464556 A CN 201410464556A CN 104235597 A CN104235597 A CN 104235597A
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- liquid level
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- overcharge
- air cylinder
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Abstract
The invention discloses a horizontal overcharge preventing LNG storage tank, which comprises a tank body for storing LNG, a communication box body and a movable switch, wherein an inner liquid inlet pipe, an inner gas phase pipe, an inner liquid outlet pipe and an overcharge preventing device are arranged in the tank body; the overcharge preventing comprises a liquid level box which is fixed on the top of the inner wall of the storage tank; the cavity of the liquid level is communicated with the cavity of the tank body; the communication box body is fixed on the side wall of the liquid level box; a liquid inlet and a liquid outlet are formed in the communication box body; the inner liquid inlet pipe is abutted and communicated with the liquid inlet of the communication box body; the movable switch is rotatably arranged in the communication box and is provided with a matching part extending into the liquid level box; a floater the specific weight of which is lower than that of the LNG is arranged in the liquid level box; the floater is matched with the matching part, so as to control the movable switch to rotate to open or close the liquid outlet. According to the storage tank, no matter how much liquid is left, when the tank is filled with liquid, the originally designed safety space is not influenced and the use safety of the storage tank can be fully guaranteed.
Description
Technical field
The present invention relates to a kind of LNG air cylinder, refer to a kind of anti-overcharge horizontal LNG air cylinder especially.
Background technique
The structure of current horizontal LNG air cylinder comprises the bottle for splendid attire LNG, is provided with interior liquid inlet pipe, interior gas phase pipe, interior drain pipe and anti-overcharge device in this bottle.And anti-overcharge device has installed the reserved inner bag with a constant volume in bottle intracavity additional, and open an aperture in the bottom of reserved inner bag; When LNG air cylinder is at topping up, fast owing to filling speed, in a short period of time the bottle intracavity of LNG air cylinder can be full of, therefore only a small amount of liquid may be had to enter reserved inner bag by aperture in filling process, after filling terminates, liquid can progress into reserved inner bag, reaches both balances, to play the effect preventing gas cylinder from overcharging.Right said structure has the following disadvantages: 1, only fill under empty bottle state and could effectively play anti-overcharge effect; If when leaving certain LNG residual capacity in air cylinder, when again carrying out topping up, due to the design deficiency of former reserved inner bag, reach when being full of, the gas phase safety space reserved in gas cylinder will obviously be reduced, and this just there will be and overcharges phenomenon, there is potential safety hazard.If there is impurity in 2 extraneous liquid sources, easily there is the aperture on the reserved inner bag of blocking, make its anti-overcharge disabler.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of anti-overcharge horizontal LNG air cylinder, and this LNG air cylinder does not leave how many remaining liqs in phial and removes liquid feeding, all can not affect intrinsic safety space, fully ensure that the Security that air cylinder uses.
For solving the problems of the technologies described above, technological scheme of the present invention is: a kind of anti-overcharge horizontal LNG air cylinder, comprise the bottle for splendid attire LNG, interior liquid inlet pipe, interior gas phase pipe, interior drain pipe and anti-overcharge device is provided with in this bottle, described anti-overcharge device comprises the liquid level box being fixed on air cylinder inwall top, and the inner chamber of this liquid level box is communicated with bottle intracavity; Be fixed on the connection casing of liquid level box sidewall, this connection casing is provided with liquid entering hole and liquid outlet, described interior liquid inlet pipe is docked and connected with the liquid entering hole being communicated with casing; Rotate the movable switch being installed on and being communicated with in casing, described movable switch is provided with the auxiliary section stretched in liquid level box, be placed with the float of proportion lower than LNG in described liquid level box, this float coordinates with auxiliary section and controls movable switch and rotate and make described liquid outlet cut out or open.
As the preferred scheme of one, described movable switch comprises rotation and is installed on the movable valve plate be communicated with in casing, is fixedly connected with and the depending post extend in liquid level box or matching board with movable valve plate, and this depending post or matching board coordinate with float as auxiliary section.
As the preferred scheme of one, the closedown of described movable switch relies on depending post or matching board own wt to realize, and this depending post or matching board are greater than the gravitational moment of movable valve plate relative to the gravitational moment of center of rotation.
As the preferred scheme of one, the closedown of described movable switch relies on float to decline and realizes, and this depending post or matching board are fixed by pulling cable and float, and this float declines can drive depending post or the downward beat of matching board.
As the preferred scheme of one, the liquid outlet place of described connection liquid level casing is connected with drain pipe, this drain pipe to bottle intracavity top extend and the outlet of drain pipe towards bottle intracavity top.
As the preferred scheme of one, in this air cylinder, be provided with interior pressure inlet.
As the preferred scheme of one, described liquid level box comprises upper seal and the liquid level casing of lower openings, the guard be fixed on liquid level casing, this guard is provided with intercommunicating pore, and the top of described liquid level casing is provided with the fixed plate for being fixed on bottle intracavity.
After have employed technique scheme, effect of the present invention is: because described anti-overcharge device comprises the liquid level box being fixed on air cylinder inwall top, the inner chamber of this liquid level box is communicated with bottle intracavity, be fixed on the connection casing of liquid level box sidewall, this connection casing is provided with liquid entering hole and liquid outlet, described interior liquid inlet pipe is docked and connected with the liquid entering hole being communicated with casing, rotate the movable switch being installed on and being communicated with in casing, described movable switch is provided with the auxiliary section stretched in liquid level box, the float of proportion lower than LNG is placed with in described liquid level box, this float coordinates with auxiliary section and controls movable switch and rotate and make described liquid outlet cut out or open, this anti-overcharge device utilizes the lifting of float to drive movable switch beat, thus make movable switch be closed by liquid outlet or open, when liquid level in air cylinder arrives setting height, float in anti-overcharge device can float up to corresponding height and drive movable switch to cut out by liquid outlet, flow is caused to reduce rapidly, the water influent pipeline pressure be connected with gas station increases instantaneously, automatically jump rifle when pressure higher than air filling gun during setting pressure and stop liquid feeding, reach the effect preventing from overcharging.And the liquid feed liquor speed in liquid level box is without the need to controlling, therefore, the communicating passage of liquid level box and bottle intracavity can increase, thus there will not be blocking failure phenomenon.
Again because the closedown of described movable switch relies on depending post or matching board own wt to realize, the closedown of gravitational moment or described movable switch that this depending post or matching board are greater than movable valve plate relative to the gravitational moment of center of rotation relies on float to decline and realizes, this depending post or matching board are fixed by pulling cable and float, and this float declines can drive depending post or the downward beat of matching board.These two kinds of structures all can realize the opening and closing of movable switch, and the action of its movable switch adopts mechanical type to control, stable and reliable for performance.
Again because the liquid outlet place of described connection liquid level casing is connected with drain pipe, this drain pipe to bottle intracavity top extend and the outlet of drain pipe towards bottle intracavity top, make at topping up like this, LNG can produce shower phenomenon behind bottle intracavity top, reducing topping up makes the page fluctuate widely, LNG is avoided to discharge from interior gas phase pipe, reduce the waste of LNG, the temperature of the LNG simultaneously come in due to firm topping up is lower, cooling twice can be carried out for the rock gas gasified in bottle, thus the rock gas of gasification is liquefied again, thus reduce the discharge of gaseous natural gas.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structure sectional view of the embodiment of the present invention;
Fig. 2 is the structure sectional view of movable switch when opening of anti-overcharge device;
Structure sectional view when Fig. 3 is the movable switch closedown of anti-overcharge device;
Fig. 4 is the stereogram of anti-overcharge device;
In accompanying drawing: 1. bottle; 11. inner bottles; Rear head in 12.; Front head in 13.; 2. liquid inlet pipe in; 3. drain pipe in; 4. pressure inlet in; 5. gas phase pipe in; 6. anti-overcharge device; 61. liquid level casings; 62. are communicated with casing; 63. floats; 64. depending posts; 65. movable valve plates; 66. fixed plates; 67. liquid entering holes; 68. drain pipes; 69. guards; 7. level meter; 8. Saxboard.
Embodiment
Below by specific embodiment, the present invention is described in further detail.
As shown in Figure 1, a kind of anti-overcharge horizontal LNG air cylinder, comprises the bottle 1 for splendid attire LNG, is provided with interior liquid inlet pipe 2, interior gas phase pipe 5, interior drain pipe 3 and anti-overcharge device 6 in this bottle 1.This bottle 1 generally comprises external bottle 1, inner bottle 11 and is arranged at the thermal-protective coating of external bottle 1 and inner bottle 11, in order to make the structure of inner bottle 11 clearly, does not draw external bottle 1 and thermal-protective coating in Fig. 1.The front-end and back-end of described inner bottle 11 are fixed respectively by interior front head 13 and interior rear head 12.Described interior liquid inlet pipe 2, interior gas phase pipe 5 and interior drain pipe 3 are all concentrated by the collector termination being arranged on front end, and wherein, drain pipe 3 extends to the bottom of inner bottle 11, and interior liquid inlet pipe 2 and interior gas phase pipe 5 extend to the top of inner bottle 11.
As shown in Figures 2 to 4, described anti-overcharge device 6 comprises the liquid level box being fixed on air cylinder inwall top, the inner chamber of this liquid level box and bottle 1 inner space, described liquid level box comprises upper seal and the liquid level casing 61 of lower openings, the guard 69 be fixed on liquid level casing 61, this guard 69 is provided with intercommunicating pore, this intercommunicating pore is arranged on the bottom of guard 69, the top of described liquid level casing 61 is provided with the fixed plate 66 for being fixed on bottle 1 inner chamber, and this fixed plate 66 is fixed on the inwall of inner bottle 11 by the mode of welding.
Be fixed on the connection casing 62 of liquid level box sidewall, this connection casing 62 is provided with liquid entering hole 67 and liquid outlet, described interior liquid inlet pipe 2 is docked and connected with the liquid entering hole 67 being communicated with casing 62; This liquid entering hole 67 is arranged on upper end, and liquid outlet arranges lower end.Rotate the movable switch being installed on and being communicated with in casing 62, described movable switch is provided with the auxiliary section stretched in liquid level box, the float 63 of proportion lower than LNG is placed with in described liquid level box, this float 63 coordinates with auxiliary section and controls movable switch and rotate and make described liquid outlet cut out or open, in the present embodiment, float 63 adopts ball float, certainly must be not circular, can also be such as oval or other shapes, as long as the size of liquid level casing 61 is mated with float 63, and constraint float 63 only moves up and down and guarantees that the liquid level that float 63 contacts with auxiliary section does not change.Such as, when float 63 is oval, now, the width of liquid level casing 61 just can hold the short axis width of ellipsoid, such ellipsoid major axis is vertical, and ellipsoid can only the vertical knee-action of major axis, like this, liquid level when ellipsoid contacts with auxiliary section does not at every turn change, and guarantees that anti-overcharge degree is consistent.
And float 63 how to drive movable switch opening and closing, at least following two kinds of modes are disclosed: 1. movable switch described in comprises rotation and is installed on the movable valve plate 65 be communicated with in casing 62, is fixedly connected with and the depending post 64 extend in liquid level box or matching board with movable valve plate 65, and this depending post 64 or matching board coordinate with float 63 as auxiliary section in the present invention.The closedown of described movable switch relies on depending post 64 or matching board own wt to realize, and this depending post 64 or matching board are greater than the gravitational moment of movable valve plate 65 relative to the gravitational moment of center of rotation.So, when liquid level rises, float 63 can rise along with the rising of liquid level, rise to a certain degree, float 63 can continue to rise and drive depending post 64 or matching board action, thus liquid outlet is closed by driving activity valve plate 65, after this air cylinder uses, liquid level declines, thus float 63 declines, and depending post 64 or matching board are greater than the gravitational moment of movable valve plate 65 relative to the gravitational moment that center of rotation produces, therefore, whole movable switch can swing towards a side of depending post 64, so just makes movable valve plate 65 separate with liquid outlet.
The second structure is: the closedown of described movable switch relies on float 63 to decline and realizes, this depending post 64 or matching board are fixed by pulling cable and float 63, this float 63 declines can drive depending post 64 or the downward beat of matching board, so when liquid level declines, float 63 also declines with it, when dropping to a certain degree, movable switch can rely on the weight of float 63 and open.
The liquid outlet place of described connection liquid level casing 61 is connected with drain pipe 68, this drain pipe 68 to bottle 1 inner cavity top extend and the outlet of drain pipe 68 towards bottle 1 inner cavity top.The setting of this drain pipe 68 just makes to form spraying effect when topping up, reduces the level fluctuation in inner bottle 11, effectively decreases liquid and enters probability in interior gas phase pipe 5.Meanwhile, spray also to be lowered the temperature liquefaction to the rock gas of the gaseous state in inner bottle 11 again, cuts the waste.
Interior pressure inlet 4 is provided with in this air cylinder.This interior pressure inlet 4 can dock with pressurization system, the additional mechanical supercharging when pressure of the inside of a bottle reduces.
Also be fixed with the Saxboard 8 and level meter 7 that vertically arrange bottom the inwall of described inner bottle 11, the height of this Saxboard 8 is about 1/3 of inner bottle 11 height.
In the present invention, air cylinder is horizontal air cylinder, and this air cylinder can be used as car bottle or other purposes.
Claims (7)
1. an anti-overcharge horizontal LNG air cylinder, comprise the bottle for splendid attire LNG, interior liquid inlet pipe, interior gas phase pipe, interior drain pipe and anti-overcharge device is provided with in this bottle, it is characterized in that: described anti-overcharge device comprises the liquid level box being fixed on air cylinder inwall top, and the inner chamber of this liquid level box is communicated with bottle intracavity; Be fixed on the connection casing of liquid level box sidewall, this connection casing is provided with liquid entering hole and liquid outlet, described interior liquid inlet pipe is docked and connected with the liquid entering hole being communicated with casing; Rotate the movable switch being installed on and being communicated with in casing, described movable switch is provided with the auxiliary section stretched in liquid level box, be placed with the float of proportion lower than LNG in described liquid level box, this float coordinates with auxiliary section and controls movable switch and rotate and make described liquid outlet cut out or open.
2. a kind of anti-overcharge horizontal LNG air cylinder as claimed in claim 1, it is characterized in that: described movable switch comprises rotation and is installed on the movable valve plate be communicated with in casing, is fixedly connected with and the depending post extend in liquid level box or matching board with movable valve plate, and this depending post or matching board coordinate with float as auxiliary section.
3. a kind of anti-overcharge horizontal LNG air cylinder as claimed in claim 2, it is characterized in that: the closedown of described movable switch relies on depending post or matching board own wt to realize, and this depending post or matching board are greater than the gravitational moment of movable valve plate relative to the gravitational moment of center of rotation.
4. a kind of anti-overcharge horizontal LNG air cylinder as claimed in claim 2, it is characterized in that: the closedown of described movable switch relies on float to decline and realizes, this depending post or matching board are fixed by pulling cable and float, and this float declines can drive depending post or the downward beat of matching board.
5. the anti-overcharge horizontal LNG air cylinder of the one as described in claim 3 or 4, is characterized in that: the liquid outlet place of described connection liquid level casing is connected with drain pipe, this drain pipe to bottle intracavity top extend and the outlet of drain pipe towards bottle intracavity top.
6. a kind of anti-overcharge horizontal LNG air cylinder as claimed in claim 5, is characterized in that: be provided with interior pressure inlet in this air cylinder.
7. a kind of anti-overcharge horizontal LNG air cylinder as claimed in claim 6, it is characterized in that: described liquid level box comprises upper seal and the liquid level casing of lower openings, the guard be fixed on liquid level casing, this guard is provided with intercommunicating pore, and the top of described liquid level casing is provided with the fixed plate for being fixed on bottle intracavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410464556.6A CN104235597B (en) | 2014-09-12 | 2014-09-12 | A kind of anti-overcharge horizontal LNG air cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410464556.6A CN104235597B (en) | 2014-09-12 | 2014-09-12 | A kind of anti-overcharge horizontal LNG air cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104235597A true CN104235597A (en) | 2014-12-24 |
| CN104235597B CN104235597B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410464556.6A Active CN104235597B (en) | 2014-09-12 | 2014-09-12 | A kind of anti-overcharge horizontal LNG air cylinder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656601A (en) * | 2017-09-21 | 2018-02-02 | 曙光节能技术（北京）股份有限公司 | A kind of heat abstractor |
| CN114962990A (en) * | 2022-05-05 | 2022-08-30 | 北京福田戴姆勒汽车有限公司 | Automobile-used gas bomb and vehicle |
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| CN204083774U (en) * | 2014-09-12 | 2015-01-07 | 张家港富瑞特种装备股份有限公司 | A kind of anti-overcharge horizontal LNG air cylinder |
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2014
- 2014-09-12 CN CN201410464556.6A patent/CN104235597B/en active Active
Patent Citations (6)
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| GB2342647A (en) * | 1998-10-15 | 2000-04-19 | Mve Inc | Cryogenic liquid storage tank with integral ullage tank |
| JP4919618B2 (en) * | 2005-05-30 | 2012-04-18 | 株式会社森田鉄工所 | Float type water level adjustment valve |
| WO2010090054A1 (en) * | 2009-02-04 | 2010-08-12 | 中央精機株式会社 | Overfilling prevention device for dme fuel tank |
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| CN203571429U (en) * | 2013-09-27 | 2014-04-30 | 天津东轩燃气有限公司 | Anti-overfilling buzzer type LNG storage tank |
| CN204083774U (en) * | 2014-09-12 | 2015-01-07 | 张家港富瑞特种装备股份有限公司 | A kind of anti-overcharge horizontal LNG air cylinder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107656601A (en) * | 2017-09-21 | 2018-02-02 | 曙光节能技术（北京）股份有限公司 | A kind of heat abstractor |
| CN114962990A (en) * | 2022-05-05 | 2022-08-30 | 北京福田戴姆勒汽车有限公司 | Automobile-used gas bomb and vehicle |
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| Publication number | Publication date |
|---|---|
| CN104235597B (en) | 2016-03-30 |
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