CN112012807A - Cooling structure of valve seat ring - Google Patents
Cooling structure of valve seat ring Download PDFInfo
- Publication number
- CN112012807A CN112012807A CN202010145751.8A CN202010145751A CN112012807A CN 112012807 A CN112012807 A CN 112012807A CN 202010145751 A CN202010145751 A CN 202010145751A CN 112012807 A CN112012807 A CN 112012807A
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- CN
- China
- Prior art keywords
- valve seat
- cooling water
- cooling
- seat ring
- water outlet
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/12—Cooling of valves
- F01L3/16—Cooling of valves by means of a fluid flowing through or along valve, e.g. air
- F01L3/18—Liquid cooling of valve
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a cooling structure of a valve seat ring, which comprises two air inlets and two air outlets, wherein the two air inlets and the two air outlets are arranged on a cylinder cover body in a diamond shape; one side of the cooling water tank, which is far away from the cooling water inlet channel, is provided with a cooling water outlet channel, one end of the cooling water outlet channel is communicated with the cooling water tank, and the other end of the cooling water outlet channel is provided with a water outlet hole. According to the cooling structure of the valve seat ring, the cooling liquid area is integrated with the seat ring and the cylinder cover structure, and the cooling liquid directly contacts the cylinder cover and the seat ring, so that the cooling structure has better cooling capacity.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a cooling structure of a valve seat ring.
Background
When an exhaust valve of an exhaust valve seat ring of the internal combustion engine is opened at the tail of a power stroke, high-temperature and high-pressure gas directly acts on the exhaust valve seat ring, and meanwhile, the intake valve seat ring is also subjected to high temperature due to the fact that the intake valve seat ring is close to the exhaust valve seat ring. The exhaust valve seat and the intake valve seat are deformed by a high thermal load, and if the cooling effect is not good, cracks are easily generated.
The cooling structure of the existing valve seat ring includes: the cylinder cover body is provided with a first air inlet, a second air inlet, a first exhaust port and a second exhaust port which are arranged in a diamond shape, inlet valve seat rings, exhaust valve seat rings and cooling water channels are respectively and correspondingly arranged at the inlets of the inlet/exhaust ports, and the water channels are arranged between the adjacent exhaust valve seat rings, between the adjacent inlet valve seat rings and between the adjacent inlet/exhaust valve seat rings. The cooling structure of the valve seat ring dissipates heat through a cross cooling water channel processed between the exhaust valve seat ring and the intake valve seat ring.
The existing cooling structure mainly has the following three disadvantages:
1. the coolant liquid region is far away from the seat ring, the capacity of taking away the heat of valve seat ring by the coolant liquid of this cooling mode is not enough, and heat transfer effect is not good, causes the thermal stress of valve seat ring and peripheral structure to be heated and warp great, causes the unusual wearing and tearing to the seat ring from this, is unfavorable for the life of seat ring, has restricted the further promotion of internal-combustion engine performance to a certain extent.
2. High heat can cause local boiling of cooling water, easily cause cavitation erosion of a valve seat ring, and influence service performance, thereby influencing the reliability of an engine.
3. In the whole engine cooling system, the cylinder head in the high-temperature region cannot be cooled well preferentially, and the cooling capacity of the whole engine is poor.
Disclosure of Invention
In order to solve the problems, the invention provides a cooling structure of a valve seat ring, wherein a cooling liquid area is integrated with the seat ring and a cylinder cover structure, and the cooling liquid directly contacts the cylinder cover and the seat ring, so that the cooling structure has better cooling capacity.
The invention adopts the following technical scheme to realize the purpose:
a cooling structure of a valve seat ring comprises two air inlets and two air outlets which are arranged on a cylinder cover body in a diamond shape, wherein an air inlet valve seat ring is arranged on each air inlet, an air outlet valve seat ring is arranged on each air outlet, a cooling water tank is arranged on the outer wall of each air outlet valve seat ring, a cooling water inlet channel is arranged between the two air outlet valve seat rings, one end of each cooling water inlet channel is provided with a water inlet hole, and the other end of each cooling water inlet channel is communicated with the cooling water; one side of the cooling water tank, which is far away from the cooling water inlet channel, is provided with a cooling water outlet channel, one end of the cooling water outlet channel is communicated with the cooling water tank, and the other end of the cooling water outlet channel is provided with a water outlet hole.
Preferably, a water plug matched with the water inlet hole is arranged on the cooling water inlet channel.
Preferably, the cooling water inlet channel and the two cooling water outlet channels are arranged in a Y shape.
Preferably, the cooling water channel is annular and arranged around the exhaust valve seat ring.
The invention has the beneficial effects that:
the cooling structure of the valve seat ring can forcibly lead water to cool a high-temperature area, so that the thermal deformation of the exhaust valve seat ring and the peripheral structure is reduced, the abnormal abrasion caused by the thermal deformation is improved, and the service life of parts is prolonged. The independent water channel cooling structure can greatly improve the heat dissipation capability of the seat ring area. Compared with the traditional structure, the cooling structure has better cooling effect, can bear the secondary power-increasing development of the traditional engine, has huge potential, and has simple cooling structure and small processing difficulty.
Drawings
FIG. 1 is a cross-sectional view of a valve seat insert cooling arrangement provided by the present invention;
fig. 2 is a partial schematic view of a D-D direction rotation section of fig. 1.
In the figure, 1-cylinder cover body, 2-inlet valve seat ring, 3-exhaust valve seat ring, 4-cooling water tank, 5-cooling water inlet channel, 6-water inlet hole, 7-cooling water outlet channel, 8-water outlet hole and 9-water plug.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings 1-2 and the detailed description thereof.
Referring to fig. 1 and 2, an embodiment of the present invention provides a cooling structure for a valve seat insert, including two intake ports and two exhaust ports, which are arranged on a cylinder head body 1 and in a diamond shape, wherein each intake port is provided with an intake valve seat insert 2, and each exhaust port is provided with an exhaust valve seat insert 3. The outer wall of the exhaust valve seat rings 3 is provided with a cooling water tank 4, a cooling water inlet channel 5 is arranged between the two exhaust valve seat rings 3, one end of the cooling water inlet channel 5 is provided with a water inlet hole 6, and the other end of the cooling water inlet channel is communicated with the cooling water tank 4. One side of the cooling water tank 4 far away from the cooling water inlet channel 5 is provided with a cooling water outlet channel 7, one end of the cooling water outlet channel 7 is communicated with the cooling water tank 4, and the other end of the cooling water outlet channel is provided with a water outlet hole 8.
When the cooling structure of the valve seat ring is used, cooling water flows through a high-temperature area between the valve seat ring from the upper part of a cylinder cover through the water inlet hole 6 and the cooling water inlet channel 5 at a high flow speed, and meanwhile, the cooling water tank 4 is additionally arranged at the joint surface of the exhaust valve seat ring 3 with the highest temperature and the cylinder cover to forcibly feed water to cool the high-temperature area, so that the thermal deformation of the exhaust valve seat ring 3 and the peripheral structure is reduced, the abnormal abrasion caused by the thermal deformation is improved, and the service life of parts is prolonged. The independent water channel cooling structure can greatly improve the heat dissipation capability of the seat ring area. Compared with the traditional structure, the cooling structure has better cooling effect, can bear the secondary power-increasing development of the traditional engine, has huge potential, and has simple cooling structure and small processing difficulty.
Furthermore, a water plug 9 matched with the water inlet hole 6 is arranged on the cooling water inlet channel 5 to prevent water leakage.
Furthermore, the cooling water inlet channel 5 and the two cooling water outlet channels 7 are arranged in a Y shape, so that the cooling liquid area is integrated with the seat ring and the cylinder cover structure, and the cooling liquid directly contacts the cylinder cover and the seat ring, so that better cooling capacity is achieved.
Furthermore, the cooling water tank 4 is annular and is arranged around the exhaust valve seat ring 3, so that the heat dissipation effect is better achieved.
Although the invention has been described in detail above with reference to specific embodiments, it will be apparent to one skilled in the art that modifications or improvements may be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (4)
1. A cooling structure of a valve seat ring comprises two air inlets and two air outlets which are arranged on a cylinder cover body (1) in a diamond shape, wherein an air inlet valve seat ring (2) is arranged on each air inlet, and an exhaust valve seat ring (3) is arranged on each air outlet; one side of the cooling water tank (4) far away from the cooling water inlet channel (5) is provided with a cooling water outlet channel (7), one end of the cooling water outlet channel (7) is communicated with the cooling water tank (4), and the other end of the cooling water outlet channel is provided with a water outlet hole (8).
2. A valve seat insert cooling structure according to claim 1, wherein a water plug (9) fitted to the water inlet hole (6) is provided on the cooling water inlet passage (5).
3. A valve seat insert cooling structure according to claim 1, wherein the cooling water inlet passage (5) and the two cooling water outlet passages (7) are arranged in a "Y" shape.
4. A valve seat insert cooling structure according to claim 1, characterized in that the cooling water groove (4) is formed in a ring shape so as to surround the exhaust valve seat insert (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010145751.8A CN112012807A (en) | 2020-03-05 | 2020-03-05 | Cooling structure of valve seat ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010145751.8A CN112012807A (en) | 2020-03-05 | 2020-03-05 | Cooling structure of valve seat ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112012807A true CN112012807A (en) | 2020-12-01 |
Family
ID=73506999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010145751.8A Pending CN112012807A (en) | 2020-03-05 | 2020-03-05 | Cooling structure of valve seat ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112012807A (en) |
-
2020
- 2020-03-05 CN CN202010145751.8A patent/CN112012807A/en active Pending
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