CN208267923U - Low speed machine double containment conical surface exhaust valve - Google Patents
Low speed machine double containment conical surface exhaust valve Download PDFInfo
- Publication number
- CN208267923U CN208267923U CN201820813657.3U CN201820813657U CN208267923U CN 208267923 U CN208267923 U CN 208267923U CN 201820813657 U CN201820813657 U CN 201820813657U CN 208267923 U CN208267923 U CN 208267923U
- Authority
- CN
- China
- Prior art keywords
- sealing cone
- seat ring
- conical surface
- air valve
- valve seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The purpose of this utility model is to provide low speed machine double containment conical surface exhaust valves, including valve disc, air valve seat ring, the first sealing cone is arranged in air valve race interior surface, second sealing cone, air valve seat ring outlet is provided with tubaeform duct, the exit cambered surface in duct is expanded outward, tighten middle section, annular water chamber is offered inside air valve seat ring, the gentle seat ring cooling water outlet of air valve seat ring cooling water intake is respectively set in annular water chamber, the third sealing cone of the setting of valve disc outer ring and the cooperation of the first sealing cone, with the 4th sealing cone of the second sealing cone cooperation, valve disc cooling water cavity is arranged in disk above the 4th sealing cone, the side of valve disc cooling water cavity is installed by water inlet pipe, the other side is installed by outlet pipe.Cooling water cavity is all arranged in the utility model air valve seat ring and valve disc, and double coolings can reduce valve disc and air valve seat ring temperature, and the setting of the air valve seat ring double containment conical surface keeps exhaust valve sealing more preferable, and sealing cone built-up welding special material can improve its corrosion-resistant and wearability.
Description
Technical field
The utility model relates to a kind of diesel engine air inlet and outlet devices, specifically exhaust valve.
Background technique
Air valve and seat ring are one of four big friction pairs of engine, are a pair of essential in I. C engine distribution mechanism
Pairing is secondary, and function is the sucking for controlling combustion gas and the discharge of exhaust gas.Wherein when exhaust valve operation, very high thermic load is born,
Air valve head directly with the contacts fuel gas of high temperature and pressure.Exhaust valve is once opening, and the gentle seat ring in air valve head is also by high temperature
Combustion gas is washed away.If valve disc different parts are heated, radiating condition is different, so that temperature distribution is non-uniform on valve disc circumference,
Temperature difference conference make valve disc deformation warpage and gas leakage.Ship major-minor diesel engine uses inferior heavy oil at present, and this kind of heavy oil often contains
There are the elements such as a large amount of vanadium, sodium and sulphur, the oxide and salt that these elements are formed in fuel combustion process are in molten condition,
It is easily adhered on exhaust valve when the temperature of exhaust valve is very high, even at this moment very corrosion resistant hard alloy or alloy
Steel also will receive corrosion.Corrosion the result is that on sealing cone formed point pit.Pit, which is connected, may will cause leakage
Gas.The hardness of standard valve sealing cone at the working temperature be not it is very high, the hard combustion product particle of deposition is in valve closing
Shock under, sealing surface can be made pit occur, equally will cause gas leakage.
Summary of the invention
The purpose of this utility model is to provide improve the leakproofness of exhaust valve, avoid becoming valve disc because of excessive temperature differentials
Shape warpage and gas leakage, the low speed machine double containment conical surface exhaust valve for being conducive to turbocharger acting.
Purpose of the utility model is realized as follows:
The utility model low speed machine double containment conical surface exhaust valve, including valve disc, air valve seat ring, it is characterized in that: air valve seat ring
The first sealing cone, the second sealing cone is arranged in inner surface, and the first sealing cone is located at below the second sealing cone, air valve seat ring
Outlet is provided with tubaeform duct, and the exit cambered surface in duct is expanded outward, and middle section is tightened, and offers inside air valve seat ring
The gentle seat ring cooling water outlet of air valve seat ring cooling water intake, valve disc outer ring is respectively set in annular water chamber, annular water chamber
The 4th sealing cone with the third sealing cone of the first sealing cone cooperation and with the cooperation of the second sealing cone is set, the
Valve disc cooling water cavity is arranged in disk above four sealing cones, and water inlet pipe is installed in the side of valve disc cooling water cavity, and the other side is installed out
Water pipe.
The utility model can also include:
1, the first sealing cone and the second sealing cone transition position are the first vertical section, third sealing cone and the 4th sealing
The transition position of the conical surface is the second vertical section, when valve disc is taken a seat, is agreed in the first sealing cone and third sealing cone, the second sealing
While the conical surface and the 4th sealing cone agree with, the first vertical section is matched with the second vertical section.
2, the first sealing cone is equal with the height of the second sealing cone, and cone angle is 30 °.
3, air valve seat ring cooling ring shape water cavity is located above the second sealing cone.
4, built-up welding high-chromium nickel-base alloy on the first-the four sealing cone.
The advantage of the utility model is: the utility model is all provided with cooling water cavity on air valve seat ring and valve disc, is arranging
When air valve works, to the gentle valve seat constant flow cooling water of valve disc, gas is effectively reduced so that cooling effect is especially good in double coolings
Seat ring temperature keeps valve disc circumference temp uniform, avoids making due to excessive temperature differentials valve disc deformation warpage and gas leakage.The double containment conical surface
With the setting of vertical section at conical surface transition, make sealing contact surface relative increase, avoid because a certain contact surface goes wrong make it is close
The decline of envelope property, improves the leakproofness of exhaust valve to a certain extent.The bell-mouthed setting of air valve seat ring, play one it is tapered gradually
Expand the effect of jet pipe so that gas is in the process being discharged from exhaust valve, the velocity of discharge is accelerated, and exhaust energy loss is reduced, if row
The external turbocharger of tracheae can be conducive to do work.High-chromium nickel-base alloy have operating temperature height, tissue stabilization, antioxygen, sulphur and
The advantages that hot corrosion resistance is good, one layer of high-chromium nickel-base alloy of built-up welding can improve its corrosion-resistant and wearability on sealing cone.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the valve disc structural schematic diagram of the utility model；
Fig. 3 is the air valve seat ring cooling water cavity sectional view of the utility model.
Specific embodiment
It illustrates with reference to the accompanying drawing and the utility model is described in more detail:
In conjunction with Fig. 1-3, the utility model discloses a kind of exhaust valves of low speed machine double containment conical surface.Exhaust valve includes air valve
Seat ring 1 and valve disc 2；Sealing cone 8 there are two setting on air valve seat ring 1, the first sealing cone is slightly than the second sealing cone area
Greatly, two sealing cone transition positions are vertical section 9, one layer of high-chromium nickel-base alloy of built-up welding on sealing cone 8；Air valve seat ring 1 exports
It is provided with tubaeform duct 6；A circle annular water chamber 5 is provided with inside air valve seat ring, left side is provided with water inlet 3, and right side is provided with out
The mouth of a river 4；Valve disc 2 is equally provided with two sealing cones matched with seat ring, is provided with together above the sealing cone in disk
Round water cavity 7, left side mouthful is for installing water inlet pipe, and right side mouthful is for installing outlet pipe.
On the inside of air valve seat ring, it is set as vertical section at two conical surface transitions, two sections of height is contour.The setting of vertical section increases
The contact area of valve disc Yu air valve seat ring is added, if a certain conical surface or other contact surfaces keep valve disc micro- because valve disc temperature is uneven
Light deformation warpage and the influence of gas leakage or high temperature corrosion causes contact surface point pit occur and gas leakage, valve disc and air valve seat
The increase of circle contact area can keep leakproofness to a certain extent, work normally exhaust valve.
On the inside of air valve seat ring, sealing cone is in 30 ° of angles
On the inside of air valve seat ring, it is provided with tubaeform outlet above second conical surface, leads to exhaust pipe.Exit cambered surface is outward
Expansion, middle section are tightened, a similar tapered divergent nozzle, so that gas is in the process excluded from exhaust valve, the velocity of discharge
Accelerate, reduces exhaust energy loss, if the external turbocharger of exhaust pipe, can be conducive to do work.
Air valve seat ring cooling ring shape water cavity will be opened in above two sealing cones, as close to the conical surface.Will not be to close
The envelope conical surface intensity while impact also can cooling effect to sealing cone it is quite a lot of.
One layer of high-chromium nickel-base alloy of built-up welding on sealing cone.High-chromium nickel-base alloy has operating temperature height, tissue stabilization, resists
The advantages that oxygen, sulphur and hot corrosion resistance are good.Its heap is welded in sealing cone, in face of high-temperature fuel gas and high temperature corrosion these severe works
The condition of work can improve its corrosion-resistant and wearability.
When the work of low speed machine enters instroke, the valve disc 2 of exhaust valve is moved downward, air valve seat ring 1 and valve disc 2 it is close
It seals the conical surface 8 to separate, exhaust gas is flowed into from air valve seat ring lower part, is flowed through sealing cone 8 and is come tubaeform air valve seat ring outlet 6.Loudspeaker
The outlet 6 of shape is similar to a tapered divergent nozzle, so that gas, in the process being discharged from exhaust valve, the velocity of discharge is accelerated,
Exhaust energy loss is reduced, if the external turbocharger of exhaust pipe, can be conducive to do work.After exhaust, valve disc 2 is taken a seat,
Valve disc 2 and the sealing cone 8 of air valve seat ring 1 agree with.The setting of vertical section 9 at the double containment conical surface 8 and conical surface transition, connects sealing
Contacting surface relative increase avoids declining leakproofness due to a certain contact surface goes wrong, improves exhaust valve to a certain extent
Leakproofness.Valve or valve closing are no matter opened, has cooling water to enter on the left of air valve seat ring from water inlet 3, flows through annular cooling water
Chamber 5 is flowed out from right side water outlet 4；Water inlet pipe, right side connected water outlet pipe are accessed also in left side mouthful on valve disc 2, cooling water flows through
Horizontal cavity 7 realizes the cooling to valve disc 2.The continual double coolings of the gentle seat ring of valve disc so that cooling effect is especially good,
Air valve seat ring temperature is effectively reduced, keeps valve disc circumference temp uniform, avoids making due to excessive temperature differentials valve disc deformation warpage and gas leakage.
One layer of high-chromium nickel-base alloy of built-up welding can improve its corrosion-resistant and wearability on sealing cone 8.
Claims (9)
1. low speed machine double containment conical surface exhaust valve, including valve disc, air valve seat ring, it is characterized in that: air valve race interior surface setting the
One sealing cone, the second sealing cone, the first sealing cone are located at below the second sealing cone, and air valve seat ring outlet is provided with loudspeaker
The exit cambered surface in the duct of shape, duct is expanded outward, and middle section is tightened, and offers annular water chamber, ring inside air valve seat ring
The gentle seat ring cooling water outlet of air valve seat ring cooling water intake is respectively set in shape water cavity, and valve disc outer ring is arranged and first is close
The third sealing cone of cone match and the 4th sealing cone with the cooperation of the second sealing cone are sealed, on the 4th sealing cone
Valve disc cooling water cavity is arranged in square plate face, and water inlet pipe is installed in the side of valve disc cooling water cavity, and outlet pipe is installed in the other side.
2. low speed machine double containment conical surface exhaust valve according to claim 1, it is characterized in that: the first sealing cone and second close
Sealing is the first vertical section at conical surface transition, and the transition position of third sealing cone and the 4th sealing cone is the second vertical section, valve disc
When taking a seat, agree in the first sealing cone and third sealing cone, while the second sealing cone and the 4th sealing cone agree with,
First vertical section is matched with the second vertical section.
3. low speed machine double containment conical surface exhaust valve according to claim 1 or 2, it is characterized in that: the first sealing cone and
The height of two sealing cones is equal, and cone angle is 30 °.
4. low speed machine double containment conical surface exhaust valve according to claim 1 or 2, it is characterized in that: air valve seat ring cooling ring shape
Water cavity is located above the second sealing cone.
5. low speed machine double containment conical surface exhaust valve according to claim 3, it is characterized in that: air valve seat ring cooling ring shape water cavity
Above the second sealing cone.
6. low speed machine double containment conical surface exhaust valve according to claim 1 or 2, it is characterized in that: the first-the four sealing cone
Upper built-up welding high-chromium nickel-base alloy.
7. low speed machine double containment conical surface exhaust valve according to claim 3, it is characterized in that: on the first-the four sealing cone
Built-up welding high-chromium nickel-base alloy.
8. low speed machine double containment conical surface exhaust valve according to claim 4, it is characterized in that: on the first-the four sealing cone
Built-up welding high-chromium nickel-base alloy.
9. low speed machine double containment conical surface exhaust valve according to claim 5, it is characterized in that: on the first-the four sealing cone
Built-up welding high-chromium nickel-base alloy.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018206487397 | 2018-05-03 | ||
| CN201820648739 | 2018-05-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208267923U true CN208267923U (en) | 2018-12-21 |
Family
ID=64685850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820813657.3U Expired - Fee Related CN208267923U (en) | 2018-05-03 | 2018-05-29 | Low speed machine double containment conical surface exhaust valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208267923U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533347A (en) * | 2018-05-03 | 2018-09-14 | 哈尔滨工程大学 | Low speed machine double containment conical surface air bleeding valve |
-
2018
- 2018-05-29 CN CN201820813657.3U patent/CN208267923U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533347A (en) * | 2018-05-03 | 2018-09-14 | 哈尔滨工程大学 | Low speed machine double containment conical surface air bleeding valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181221 Termination date: 20210529 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |