CN204253962U - A kind of marine diesel engine air duct safety valve - Google Patents
A kind of marine diesel engine air duct safety valve Download PDFInfo
- Publication number
- CN204253962U CN204253962U CN201420669638.XU CN201420669638U CN204253962U CN 204253962 U CN204253962 U CN 204253962U CN 201420669638 U CN201420669638 U CN 201420669638U CN 204253962 U CN204253962 U CN 204253962U
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- China
- Prior art keywords
- valve
- valve body
- sleeve
- air duct
- diesel engine
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Abstract
A kind of marine diesel engine air duct safety valve, comprises valve body, valve seat, sleeve, clamping nut and spring; Wherein, valve body is tubular member, and its underpart has the escape orifice of some through valve walls, and middle part has the exhaust port of two through valve walls.Valve seat is fixed on the bottom of the inner chamber of valve body by interference fit, and be communicated with escape orifice, sleeve is arranged at the top of valve seat and can moves up and down in valve body, this sleeve or be close to valve seat escape orifice is blocked, or depart from valve seat and connect escape orifice, clamping nut is threaded connection the top of being fixed on valve body and by the bore seal of this valve body, and spring to be arranged in the inner chamber of valve body and to be pressed between sleeve and clamping nut, is close on valve seat by this sleeve.The utility model open after without the need to dismounting or change, can Reusability, have easy for installation, be convenient to batch production, strong adaptability, advantage that manufacturing cost and use cost is low, can be applicable in the air pipe line of different diesel engines.
Description
Technical field
The utility model relates to the valve member that a kind of marine diesel engine uses, and is specifically related to a kind of marine diesel engine air duct safety valve, belongs to Diesel Engine Technique Field.
Background technique
The main start mode of marine diesel engine is with pneumatic starting, and thus air actuation system is one of requisite component of marine diesel engine.The effect of the safety valve on marine diesel engine air pipe line is, when starting valve breaks down, the pressurized gas in cylinder just may be back in air duct, and now safety valve is opened and in time that high-pressure air is emptying, prevents explosion risk.Current marine diesel engine air duct safety valve major part all adopts rupture disk form, but needs dismounting after safety valve explosion and reinstall new rupture disk, or the safety valve directly more renewed; In addition, the rupture disk of each batch all needs to carry out pressure bursting test before use, and experimentation cost is very high; Therefore the manufacturing cost and use cost of existing safety valve is all very high.
Model utility content
The purpose of this utility model is, overcome the deficiency of existing diesel air duct safety valve, a kind of marine diesel engine air duct safety valve is provided, rupture disk is replaced with spring mechanism, safety valve is opened after pressure release completes and can return to original position again, and do not need again to change, in addition, safety valve is connected with air pipe line by screw thread transit joint, thus the diesel engine air system enabling the safety valve of same model adapt to for different model, reach structure simple, reduce user cost, be convenient to the effect produced in batches.
For achieving the above object, technical solution of the present utility model is as follows:
A kind of marine diesel engine air duct safety valve, it comprises valve body, valve seat, sleeve, clamping nut and spring;
Described valve body is tubular member, and its underpart has the escape orifice of some through valve walls, and middle part has the exhaust port of two through valve walls;
Described valve seat is fixed on the bottom of the inner chamber of described valve body by interference fit, and is communicated with described escape orifice;
Described sleeve is arranged at the top of described valve seat and can moves up and down in described valve body, this sleeve or be close to described valve seat and blocked by described escape orifice, or departs from described valve seat and connect described escape orifice;
Described clamping nut is threaded connection the top of being fixed on described valve body and by the bore seal of this valve body;
Described spring to be arranged in the inner chamber of described valve body and to be pressed between described sleeve and clamping nut, is close on described valve seat by this sleeve.
Further, described safety valve also includes conical valve rod, this valve rod is arranged in the inner chamber of described valve body, the top center of described clamping nut offers valve rod hole, the large end of described valve rod is connected to the center of described sleeve, small end through this valve rod hole and to this valve rod and sleeve move up and down carry out spacing.
Further, described valve body lower portion is connected with the transit joint that can be connected with described air duct.
Further, be provided with a lining between the internal chamber wall of described valve body and the outer circumferential face of sleeve, this lining and described valve body are interference fit, and this sleeve can move up and down in described lining.
Further, the pad for sealing is provided with between described clamping nut and valve body.
In the utility model, when the air in air pipe line is below safety value scope, the spring-force driven dual of Compress Spring is in sleeve, sleeve and valve base sealing are lived the air in pipeline and are not entered safety valve, when the air in pipeline meets or exceeds safety value, air overcomes spring force and backs down sleeve, and discharges from the escape orifice of valve body; When in pipeline, air pressure drops to below safety value, sleeve gets back to original position under spring force again, again seals the air in pipeline.
Compared with prior art, the beneficial effects of the utility model are:
1, instead of rupture disk with spring mechanism, safety valve is opened after pressure release completes and can return to original position again, and do not need again to change, thus change the disposable defect of existing ship diesel air tracheae safety valve, reduce user cost.
2, the utility model can be connected on different air pipe lines by the transit joint of different size, thus strong adaptability, is convenient to batch production, reduces manufacture cost.
3, described safety valve is independently arranged on air pipe line by transit joint, easy for installation, reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is installation of the present utility model and operating diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, marine diesel engine air duct safety valve described in the utility model is described in further detail, but protection domain of the present utility model should not be limited with this.
Refer to Fig. 1, Fig. 1 is the schematic diagram of embodiment of the present utility model, and diagram marine diesel engine air duct safety valve comprises valve body 1, valve seat 8, lining 6, sleeve 7, clamping nut 4, pad 2, valve rod 3, spring 5 and transit joint 9.
Described valve body 1 is tubular member, its underpart has the escape orifice 103 of some through valve walls, middle part has the exhaust port 104 of two through valve walls, described transit joint 9 is threaded connection the bottom in this valve body 1, and this transit joint 9 can be connected (see Fig. 2) with the air duct 10 of marine diesel engine.
Described valve seat 8 is fixed on the bottom of the inner chamber of described valve body 1 by interference fit, and is communicated with described escape orifice 103.
Described lining 6 is arranged in the inner chamber of described valve body 1 bottom, and is interference fit with described valve body 1.
Described sleeve 7 is arranged in the valve body 1 above described valve seat 8, and can move up and down in described lining 6; Just described escape orifice 103 is blocked when described valve seat 8 is close to downwards by this sleeve 7, just connect described escape orifice 103 when this sleeve 7 upwards departs from described valve seat 8.
Described clamping nut 4 is threaded connection the top being fixed on described valve body 1, and and be provided with pad 2 between valve body 1 by the bore seal of this valve body 1; The top center of this clamping nut 4 offers valve rod hole 101.
Described valve rod 3 is cone shape, be arranged in the inner chamber of described valve body 1, the large end of this valve rod 3 is threaded connection in the center of described sleeve 7 and moves therewith, small end is through the valve rod hole 101 of described clamping nut 4, diameter due to this valve rod hole 101 is greater than the small end of described valve rod 3 and is less than the large end of valve rod 3, therefore this valve rod hole 101 can to described valve rod 3 and sleeve 7 move up and down carry out spacing.
Described spring 5 is arranged in the inner chamber of described valve body 1, and be pressed between described sleeve 7 and clamping nut 4, this spring 5 is fixed in described sleeve 7 by described clamping nut 3, described sleeve 7 compression is fitted on described valve seat 8 by described spring 5 by this clamping nut 4, thus is closed by escape orifice 103.
Fig. 2 is installation of the present utility model and operating diagram, the air duct 10 of described marine diesel engine is connected with cylinder block by flange 11, be connected with described safety valve by transit joint 9, the Placement of air duct 10 and transit joint 9 and flange 11 can adopt welds, but is not limited only to that this is a kind of.Starting air is assigned to each cylinder by air duct 10, and air inlet is along the solid arrow direction in figure; When starting valve breaks down, the pressurized gas in cylinder back down sleeve 7 along dotted arrow direction in figure, and are discharged fast by escape orifice 103, and sleeve 7 rising simultaneously promotes pressurized air and discharges from exhaust port 104.
Be more than a best embodiment of the present utility model, protection domain of the present utility model can not be limited with this.What protection domain of the present utility model also comprised other is apparent conversion for those skilled in the art and substitutes.
The effect of described marine diesel engine air duct safety valve is, when marine diesel engine starting valve breaks down, described safety valve can be opened fast, and cylinder inner high voltage pressure of explosion can be released fast from safety valve.The utility model adopts spring mechanism to realize unlatching or the closedown of safety valve, when the air pressure in air pipe line meets or exceeds the safety value of setting, the high-pressure air pressure acted on sleeve bottom surface overcomes spring force makes safety valve open, and high-pressure air is emptying from escape orifice fast; When the air pressure in air pipe line drops to below setting value, sleeve under spring force, returns to again original state and is pressed on valve seat, makes the air in pipeline not enter safety valve.The utility model open after without the need to dismounting or change, can Reusability, have easy for installation, be convenient to the advantage produced in batches, manufacturing cost and use cost is low, can be applicable in different air pipe lines.
Claims (5)
1. a marine diesel engine air duct safety valve, is characterized in that: described safety valve comprises valve body, valve seat, sleeve, clamping nut and spring;
Described valve body is tubular member, and its underpart has the escape orifice of some through valve walls, and middle part has the exhaust port of two through valve walls;
Described valve seat is fixed on the bottom of the inner chamber of described valve body by interference fit, and is communicated with described escape orifice;
Described sleeve is arranged at the top of described valve seat and can moves up and down in described valve body, this sleeve or be close to described valve seat and blocked by described escape orifice, or departs from described valve seat and connect described escape orifice;
Described clamping nut is threaded connection the top of being fixed on described valve body and by the bore seal of this valve body;
Described spring to be arranged in the inner chamber of described valve body and to be pressed between described sleeve and clamping nut, is close on described valve seat by this sleeve.
2. marine diesel engine air duct safety valve according to claim 1, it is characterized in that: described safety valve also includes conical valve rod, this valve rod is arranged in the inner chamber of described valve body, the top center of described clamping nut offers valve rod hole, the large end of described valve rod is connected to the center of described sleeve, small end through this valve rod hole and to this valve rod and sleeve move up and down carry out spacing.
3. marine diesel engine air duct safety valve according to claim 1 and 2, is characterized in that: described valve body lower portion is connected with the transit joint that can be connected with described air duct.
4. marine diesel engine air duct safety valve according to claim 3, it is characterized in that: between the internal chamber wall of described valve body and the outer circumferential face of sleeve, be provided with a lining, this lining and described valve body are interference fit, and this sleeve can move up and down in described lining.
5. marine diesel engine air duct safety valve according to claim 4, is characterized in that: be provided with the pad for sealing between described clamping nut and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420669638.XU CN204253962U (en) | 2014-11-11 | 2014-11-11 | A kind of marine diesel engine air duct safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420669638.XU CN204253962U (en) | 2014-11-11 | 2014-11-11 | A kind of marine diesel engine air duct safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204253962U true CN204253962U (en) | 2015-04-08 |
Family
ID=52958269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420669638.XU Expired - Fee Related CN204253962U (en) | 2014-11-11 | 2014-11-11 | A kind of marine diesel engine air duct safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204253962U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370517A (en) * | 2022-01-11 | 2022-04-19 | 上海沪东造船油嘴油泵有限公司 | Air safety valve pressure regulating device and method |
-
2014
- 2014-11-11 CN CN201420669638.XU patent/CN204253962U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370517A (en) * | 2022-01-11 | 2022-04-19 | 上海沪东造船油嘴油泵有限公司 | Air safety valve pressure regulating device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20211111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |