CN2709772Y - Protection device for preventing overfilling of liquified petroleum gas cylinder - Google Patents
Protection device for preventing overfilling of liquified petroleum gas cylinder Download PDFInfo
- Publication number
- CN2709772Y CN2709772Y CN 200420044321 CN200420044321U CN2709772Y CN 2709772 Y CN2709772 Y CN 2709772Y CN 200420044321 CN200420044321 CN 200420044321 CN 200420044321 U CN200420044321 U CN 200420044321U CN 2709772 Y CN2709772 Y CN 2709772Y
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- Prior art keywords
- piston
- annular
- drainage
- valve
- gas cylinder
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- Expired - Fee Related
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a protection device for preventing the overfilling of a liquefied petroleum gas cylinder, comprising a valve body (5), a valve opening (6) and a valve cavity (17). The side wall of the upper part of the valve cavity is provided with a liquid discharging opening (8), the inner of the valve cavity is provided with a piston (9) with a restoring spring (11), and a lower valve opening (13) which is arranged at the bottom of the valve cavity is provided with a valve (12) inside. The lower end of the valve, which extends from the lower valve opening of the valve body, acts on the edge of a cam (3), the cam is connected with a float through a float rod (4), and a drainage head (7) is arranged below the valve opening. The utility model is characterized in that the lower part of the drainage head is a drainage head supporter (7a) with a contractible diameter, the lower part of the drainage head supporter is integrally connected with the piston (9), and a through hole (10) which is communicated with the upper and the lower parts is arranged in the piston; the drainage head supporter is sheathed with a sealing ring (16), wherein, the diameter of the drainage head is less than the diameter of the sealing ring, and an annular upper end plane and an annular lower end plane of the sealing ring are respectively compacted face to face and connected with an annular lower end face (7b) of the drainage head and an annular upper end face of the piston. The sealing ring is difficult to be drawn radially, deformed and damaged, so that the sealing performance and the service life of the valve body are improved.
Description
Technical field
The utility model belongs to a kind of excessive protective gear that LP gas cylinder fills that is used for.
Background technique
In order to improve Security; LP gas cylinder is when filling liquid gas; the overfilling protective gear is installed; its function is: close inflation inlet under the normal conditions; when needing inflation, utilize the high-pressure liquefaction pneumatic jack to open the inside unidirectional inflation of valve, when liquid gas reaches the safe liquid level of setting; the self acting stop valve body seals inflation inlet.The deficiency of existing this class protective gear is: the O-ring seals in the filling valve is easy to radially be pulled out deformed damaged because of impacted by the high pressure liquid gasification, influences the sealability and the working life of valve body.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of LP gas cylinder overfilling protective gear that can improve sealability and working life.
The technological scheme that addresses the above problem is (referring to implementing illustration): the utility model is provided with valve body (5), liquid entering hole (18), valve port (6), valve pocket (17), the valve pocket upper portion side wall is provided with liquid outlet (8), the piston (9) of band Returnning spring (11) is housed in the valve pocket, valve pocket bottom lower valve port (13) is built-in with valve (12), the valve lower end is stretched out lower valve port and is connected with the contact of cam (3) wheel rim, cam is connected with float (4a) by the float lever (4) that can drive its swing, valve port (6) below is provided with drainage head (7), a drainage bottom is a drainage support (7a) of reduced, piston (9) in a drainage support bottom and the valve pocket is connected as a single entity, be provided with the through hole (10) that is communicated with up and down in drainage head and the piston, it is characterized in that: described drainage head (7) is forming drainage headring shape lower end surface (7b) with the crosslinked position of a drainage support (7a) of reduced, be with the seal ring (16) of diameter on the drainage support (7a) greater than the drainage head, seal ring (16) is provided with Transverse plane under annular upper end plane and the annular, on, contact is connected with piston (9) annular upper end face face with drainage headring shape lower end surface (7b) respectively on following annular end plane.
Working principle of the present utility model is: generally, seal ring (16) withstands on the valve port (6), with valve seal in the elasticity that makes progress under the effect of spring (11); During inflation; charge into the high pressure liquid gasification from liquid entering hole (18); back down the drainage head downwards; open valve port (6); a liquid gas part flows into valve pocket (17); flow out from the liquid outlet (8) of valve pocket sidewall; enter gas cylinder, another part flows to the valve pocket bottom from the through hole (10) of drainage head and piston, gives the downward pressure of valve (12); valve this moment (12) is withstood on upper by cam (3); lower valve port (13) is in opening state, and liquid gas flows into gas cylinder from lower valve port, float lever (4) under the effect of float with bottle in the rising of liquid level drive cam (3) and rotate; liquid reaches when setting liquid level in the bottle; the recess of cam forwards the valve lower end to, and valve (12) moves to the next under the pressure of liquid gas, has sealed lower valve port (13); the savings fluid pressure raises in the through hole (10); piston and drainage head are moved upward, and seal ring (16) elasticity is withstood valve port (6), with valve seal; automatically stop inflation, play the effect of excessive protection.
Seal ring of the present utility model is sandwiched between drainage head and the piston, and the set annular upper end plane of seal ring is connected with the face contact of piston annular upper-end surface with drainage headring shape lower end surface respectively with annular Transverse plane down, improved the radially friction of seal ring, make seal ring be difficult for radially being pulled out deformed damaged, improved the sealability and the working life of valve body by high-pressure liquid gas.
Description of drawings
Fig. 1, the utility model are installed in the structural representation on the liquefaction gas bottle
Fig. 2, the utility model embodiment 1 structural representation
Fig. 3, the utility model embodiment 2 structural representations
1-LP gas cylinder 2-overfilling protective gear 3-cam 4-float lever 5-valve body 6-valve port
A 7-drainage 7a-drainage support 7b-drainage headring shape lower end surface 8-liquid outlet 9-piston 10-through hole
11-spring 12-valve 13-lower valve port 14-Y shape seal ring 15-damping hole 16-seal ring
16a-seal ring skeleton 17-valve pocket 18-liquid entering hole 19-lower valve port seal ring
Specific embodiments
Embodiment 1
Be provided with liquid entering hole 18 in valve body 5 upper ends, be provided with valve port 6 on the liquid chunnel below the liquid entering hole, the valve port below is the valve pocket 17 of enlarged-diameter, and the valve pocket upper portion side wall is provided with liquid outlet 8.
Valve port 6 belows are provided with drainage 7, drainage 7 sidewall are up-small and down-big circular cone, a drainage bottom is a drainage support 7a of reduced, piston 9 upper-end surfaces are inserted in a drainage support lower end, and be connected (but also drive fit connects) with piston thread, the drainage head forms drainage headring shape lower end surface 7b in the cross-linking part with the drainage support of reduced, be with seal ring 16 on the drainage support 7a, seal ring 16 sidewalls are up-small and down-big circular cone, the tapered sidewalls of drainage 7 and the tapered sidewalls of seal ring 16 form with the valve pocket internal face of liquid outlet 8 tops and are bordering on parallel liquid chunnel, thereby can reduce the flow resistance of liquid gas, reduce the impact force of liquid gas seal ring.
Seal ring 16 is provided with Transverse plane under annular upper end plane and the annular, annular Transverse plane internal ring portion position down is provided with protruding annular table terrace, this protruding annular table terrace embeds in the outer annular recess of drainage headring shape lower end surface 7b, the internal ring portion position on annular upper end plane also is provided with the annular table terrace of projection, this protruding annular table terrace embeds in the outer annular recess of piston 9 annular upper end faces, thereby the radially retention force from upper and lower two sides have strengthened seal ring makes seal ring be difficult for radially being pulled out deformed damaged by the high pressure liquid gasification.
Be with the y-shaped ring 14 that Open Side Down in the annular groove at piston 9 outer side walls middle part, have the damping hole 15 that is communicated with piston inner via hole 10 on the sidewall at this position, y-shaped ring 14 is provided with the annular retaining ring 14a that extends upward formation, and annular retaining ring inwall elasticity is attached on the damping hole.The y-shaped ring that Open Side Down has reverse seal action, prevents that the liquid gas of valve pocket bottom is up, and the effect of damping hole is when gas pressure is excessive in the piston hole, can back down back-up ring 14a by damping hole and flow out pressure release.
Spring 11 upper ends withstand on the interior ring-shaped step of piston hole 10 end openings, the lower end withstands on the annular table terrace of valve pocket inwall, valve 12 upper diameter are greater than lower valve port 13, place in the lower valve port, the bottom is stretched out lower valve port 13 and is withstood on cam 3 wheel rims, on the annular table terrace that makes progress in the lower valve port O-ring seals 19 is housed.
Embodiment 2
These routine seal ring 16 bottoms are enclosed within on the ring skeleton 16a, seal ring and the sulfuration of skeleton junction surface are one, seal ring that is connected as a single entity and ring skeleton are enclosed within on the drainage support 7a, the skeleton outer wall is provided with the convex portion that embeds seal ring coil, the skeleton lower end surface is stretched out the seal ring lower end surface downwards, and face inserts in the outer annular recess of piston upper-end surface contiguously.The seal ring upper-end surface is a planar annular, compresses with the contact of drainage headring shape lower end surface 7b face to be connected.
This example has further been strengthened the radially retention force of seal ring, and installation and processing is convenient simultaneously.
Claims (10)
1; LP gas cylinder overfilling protective gear; be provided with valve body (5); liquid entering hole (18); valve port (6); valve pocket (17); the valve pocket upper portion side wall is provided with liquid outlet (8); the piston (9) of band Returnning spring (11) is housed in the valve pocket; valve pocket bottom lower valve port (13) is built-in with valve (12); the valve lower end is stretched out lower valve port and is connected with the contact of cam (3) wheel rim; cam is connected with float (4a) by the float lever (4) that can drive its swing; valve port (6) below is provided with drainage head (7); it is characterized in that: a described drainage bottom is a drainage support (7a) of reduced; piston (9) in a drainage support bottom and the valve pocket is connected as a single entity; be provided with the through hole (10) that is communicated with up and down in drainage head and the piston; drainage head (7) is forming drainage headring shape lower end surface (7b) with the crosslinked position of a drainage support (7a) of reduced; be with the seal ring (16) of diameter on the drainage support (7a) greater than the drainage head; seal ring (16) is provided with Transverse plane under annular upper end plane and the annular, on; contact is connected with piston (9) annular upper end face face with drainage headring shape lower end surface (7b) respectively on following annular end plane.
2, LP gas cylinder overfilling protective gear according to claim 1 is characterized in that: described seal ring (16) sidewall is up-small and down-big conical surface.
3, LP gas cylinder overfilling protective gear according to claim 1 and 2; it is characterized in that: described seal ring (16) upper-end surface and/or lower end surface are provided with the annular table terrace of projection, and the annular table terrace of described projection embeds in the annular groove of corresponding drainage headring shape lower end surface (7b) and/or piston (9) annular upper end face.
4, LP gas cylinder overfilling protective gear according to claim 1 and 2; it is characterized in that: described seal ring (16) bottom is enclosed within on the ring skeleton (16a); the junction surface sulfuration of seal ring and skeleton is one; seal ring that is connected as a single entity and ring skeleton are enclosed within on the drainage support (7a); the skeleton outer wall is provided with the convex portion that embeds seal ring coil; the skeleton lower end surface is stretched out the seal ring lower end surface downwards; and face inserts in the outer annular recess of piston upper-end surface contiguously, and the seal ring upper-end surface is a planar annular.
5, LP gas cylinder overfilling protective gear according to claim 1 and 2 is characterized in that: piston (9) upper-end surface is inserted in a described drainage support (7a) lower end, and is connected with piston thread or drive fit.
6, LP gas cylinder overfilling protective gear according to claim 3 is characterized in that: piston (9) upper-end surface is inserted in a described drainage support (7a) lower end, and is connected with piston thread or drive fit.
7, LP gas cylinder overfilling protective gear according to claim 4 is characterized in that: piston (9) upper-end surface is inserted in a described drainage support (7a) lower end, and is connected with piston thread or drive fit.
8, LP gas cylinder overfilling protective gear according to claim 1 and 2; it is characterized in that: be with the y-shaped ring that Open Side Down (14) in the annular groove at described piston (9) outer side wall middle part; have the damping hole (15) that is communicated with piston inner via hole (10) on the sidewall at this position; y-shaped ring (14) is provided with the annular retaining ring (14a) that extends upward formation, and annular retaining ring inwall elasticity is attached on the damping hole.
9, LP gas cylinder overfilling protective gear according to claim 3; it is characterized in that: be with the y-shaped ring that Open Side Down (14) in the annular groove at described piston (9) outer side wall middle part; have the damping hole (15) that is communicated with piston inner via hole (10) on the sidewall at this position; y-shaped ring (14) is provided with the annular retaining ring (14a) that extends upward formation, and annular retaining ring inwall elasticity is attached on the damping hole.
10, LP gas cylinder overfilling protective gear according to claim 4; it is characterized in that: be with the y-shaped ring that Open Side Down (14) in the annular groove at described piston (9) outer side wall middle part; have the damping hole (15) that is communicated with piston inner via hole (10) on the sidewall at this position; y-shaped ring (14) is provided with the annular retaining ring (14a) that extends upward formation, and annular retaining ring inwall elasticity is attached on the damping hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420044321 CN2709772Y (en) | 2004-04-05 | 2004-04-05 | Protection device for preventing overfilling of liquified petroleum gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420044321 CN2709772Y (en) | 2004-04-05 | 2004-04-05 | Protection device for preventing overfilling of liquified petroleum gas cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2709772Y true CN2709772Y (en) | 2005-07-13 |
Family
ID=34850911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420044321 Expired - Fee Related CN2709772Y (en) | 2004-04-05 | 2004-04-05 | Protection device for preventing overfilling of liquified petroleum gas cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2709772Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390128A (en) * | 2014-11-20 | 2015-03-04 | 四川兴良川深冷科技有限公司 | LNG form type pneumatic liquid adding gun |
| CN105143743A (en) * | 2013-03-15 | 2015-12-09 | 胡戈·安东尼奥·穆诺茨·阿科斯塔 | Double action float valve |
| CN107231809A (en) * | 2014-12-17 | 2017-10-03 | 沃尔纳私人有限公司 | System is protected in container spill-over |
| CN108425904A (en) * | 2018-05-14 | 2018-08-21 | 张家港富瑞阀门有限公司 | A kind of novel liquid level control device and its operation principle |
| CN110371914A (en) * | 2019-07-24 | 2019-10-25 | 青岛金黄海集装箱有限公司 | A kind of tank oiling oil overfill protection system and its working method |
| CN112032312A (en) * | 2020-08-25 | 2020-12-04 | 上海百图低温阀门有限公司 | A limit for filling device for low temperature storage tank |
-
2004
- 2004-04-05 CN CN 200420044321 patent/CN2709772Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105143743A (en) * | 2013-03-15 | 2015-12-09 | 胡戈·安东尼奥·穆诺茨·阿科斯塔 | Double action float valve |
| CN105143743B (en) * | 2013-03-15 | 2017-03-15 | 胡戈·安东尼奥·穆诺茨·阿科斯塔 | Double acting float-controlled valve |
| CN104390128A (en) * | 2014-11-20 | 2015-03-04 | 四川兴良川深冷科技有限公司 | LNG form type pneumatic liquid adding gun |
| CN107231809A (en) * | 2014-12-17 | 2017-10-03 | 沃尔纳私人有限公司 | System is protected in container spill-over |
| CN107231809B (en) * | 2014-12-17 | 2019-09-20 | 沃尔纳私人有限公司 | System is protected in container spill-over |
| CN108425904A (en) * | 2018-05-14 | 2018-08-21 | 张家港富瑞阀门有限公司 | A kind of novel liquid level control device and its operation principle |
| CN110371914A (en) * | 2019-07-24 | 2019-10-25 | 青岛金黄海集装箱有限公司 | A kind of tank oiling oil overfill protection system and its working method |
| CN112032312A (en) * | 2020-08-25 | 2020-12-04 | 上海百图低温阀门有限公司 | A limit for filling device for low temperature storage tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |