CN209855912U - Mounting structure of cylinder head water-cooling exhaust valve seat - Google Patents
Mounting structure of cylinder head water-cooling exhaust valve seat Download PDFInfo
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- CN209855912U CN209855912U CN201920757976.1U CN201920757976U CN209855912U CN 209855912 U CN209855912 U CN 209855912U CN 201920757976 U CN201920757976 U CN 201920757976U CN 209855912 U CN209855912 U CN 209855912U
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- valve seat
- exhaust valve
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- cooling water
- peripheral wall
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Abstract
A mounting structure of a water-cooling exhaust valve seat of a cylinder cover comprises the cylinder cover and the exhaust valve seat, wherein a sealing ring is arranged on a small-diameter section of the peripheral wall of the exhaust valve seat, at least one circle of sealant is arranged on a large-diameter section of the peripheral wall of the exhaust valve seat, a cooling water ring groove is arranged on the small-diameter section of the peripheral wall of the exhaust valve seat, the inner space of the cooling water ring groove extends towards the sealing ring and the sealant respectively to separate the sealing ring and the sealant from an inner hole of the exhaust valve seat, a three-stage stepped hole is arranged on the cylinder cover, a first cooling water inlet hole and a second cooling water inlet hole and a water outlet, the large-diameter section of the outer peripheral wall of the exhaust valve seat is in interference fit with the large-diameter section of the three-stage stepped hole of the cylinder cover, so that the downstream end of the first cooling water inlet hole, the downstream end of the second cooling water inlet hole and the upstream end of the water outlet hole are respectively communicated with the cooling water ring groove of the exhaust valve seat.
Description
Technical Field
The utility model relates to a gas engine field, in particular to mounting structure of cylinder head water-cooling exhaust valve seat.
Background
The exhaust valve seat of the cylinder cover of the high-power gas engine generally has the problem of short service life (about 6000 hours) because of working in a high-temperature environment, and the gas engine needs to replace the exhaust valve seat after running for a certain time. If an integral high-temperature alloy valve seat is adopted, the cost is too high (the cost is 4 times that of the current exhaust valve seat). Therefore, the cylinder cover of the water-cooled exhaust valve seat is mostly adopted by the high-power gas engine on the market at present, and the exhaust valve seat is cooled by forced water cooling by circulating cooling water so as to prolong the service life of the exhaust valve seat. However, the problem of water leakage of the exhaust valve seat with the structure always troubles manufacturers of various high-power gas engines.
Disclosure of Invention
The utility model aims at prior art not enough, provide a mounting structure of cylinder head water-cooling exhaust valve seat, its simple structure, preparation are with low costs, and through the cooling chamber way that improves the cylinder head exhaust valve seat, prevent effectively that the exhaust valve seat leads to the cooling water gasification because of local overheat, arouse that the exhaust valve seat cools off badly, high temperature creep is serious, avoids appearing the exhaust valve seat and appears the problem of leaking under high temperature vibration environment.
The technical scheme of the utility model is that: a mounting structure of a cylinder cover water-cooling exhaust valve seat comprises a cylinder cover and an exhaust valve seat, wherein the peripheral wall of the exhaust valve seat is arranged in a secondary ladder shape, a sealing ring is arranged on a small-diameter section of the peripheral wall of the exhaust valve seat, at least one circle of sealant is arranged on a large-diameter section of the peripheral wall of the exhaust valve seat, a cooling water ring groove is arranged on the small-diameter section of the peripheral wall of the exhaust valve seat, the inner space of the cooling water ring groove extends towards the sealing ring and the sealant respectively to separate the sealing ring and the sealant from an inner hole of the exhaust valve seat, a tertiary ladder hole is arranged on the cylinder cover and is used for being communicated with a combustion chamber of a cylinder, a first cooling water inlet hole, a second cooling water inlet hole and a water outlet hole are arranged on the cylinder cover, the small-diameter section of the peripheral wall of the, and the downstream end of the first cooling water inlet hole, the downstream end of the second cooling water inlet hole and the upstream end of the water outlet hole are respectively communicated with the cooling water ring groove of the exhaust valve seat.
The small-diameter section of the outer peripheral wall of the exhaust valve seat is provided with a first annular groove, and the sealing ring is installed in the annular groove and fixed on the small-diameter section of the outer peripheral wall of the exhaust valve seat; the large-diameter section of the outer peripheral wall of the exhaust valve seat is provided with at least one second annular groove, and the sealant is filled in the second annular groove and fixed on the large-diameter section of the outer peripheral wall of the exhaust valve seat.
The connecting end faces of the large-diameter section and the small-diameter section of the peripheral wall of the exhaust valve seat are matched with the hole shoulders between the large-diameter section and the middle-diameter section of the cylinder cover, and the exhaust valve seat is axially limited.
Be equipped with the third annular on the connection terminal surface of exhaust valve seat periphery wall major diameter section, minor diameter section, it has sealed glue to fill in the third annular.
The flow area of the water outlet hole is larger than the sum of the flow areas of the first cooling water inlet hole and the second cooling water inlet hole.
The downstream end of the water outlet hole extends upwards in an inclined mode.
Adopt above-mentioned technical scheme to have following beneficial effect:
1. the mounting structure of the water-cooling exhaust valve seat of the cylinder cover comprises the cylinder cover and the exhaust valve seat, wherein the cylinder cover is mounted on a cylinder body and used for sealing a cylinder, and the exhaust valve seat is used for mounting an exhaust valve. The periphery wall setting of exhaust valve seat is the second grade echelonment, is equipped with the sealing ring on the path section of exhaust valve seat periphery wall, is equipped with sealed glue of at least round on the big path section of exhaust valve seat periphery wall, is equipped with the cooling water annular on the path section of exhaust valve seat periphery wall, the interior vacancy of cooling water annular is respectively towards sealing ring, sealed extension, separates sealing ring, sealed glue and exhaust valve seat's hole, and after the cooling water got into the cooling water annular, the cooling water was separated the hole (high temperature gas) and sealing ring, sealed glue of exhaust valve seat, effectively reduced the heat of transmitting to sealing ring, sealed glue, reduced sealing ring, sealed glue failure risk. Be equipped with tertiary shoulder hole on the cylinder head for with cylinder combustion chamber intercommunication, be equipped with first cooling inlet hole, second cooling inlet hole, apopore on the cylinder head, the path section interference fit of exhaust valve seat periphery wall is in the well footpath section of the tertiary shoulder hole of cylinder head, the big footpath section interference fit of exhaust valve seat periphery wall is in the big footpath section of the tertiary shoulder hole of cylinder head, make the low reaches end of first cooling inlet hole, the low reaches end of second cooling inlet hole, the upper reaches end of apopore communicate with the cooling water annular of exhaust valve seat respectively, the sealing ring is used for cutting off cooling water annular and combustion chamber, prevent that the cooling water from getting into the combustion chamber, guarantee gas engine normal work, sealed glue is used for cutting off cooling water annular and the cylinder body is external, avoid the cooling water to leak outward. The first cooling water inlet hole and the second cooling water inlet hole are filled with water simultaneously, so that the cooling water is enabled to be filled with the cooling water ring groove quickly, and the cooling efficiency is improved.
2. The flow area of the water outlet hole is larger than the sum of the flow areas of the first cooling water inlet hole and the second cooling water inlet hole, the flow resistance of the cooling water is small, the flow channel is smooth, the local temperature of the exhaust valve seat is prevented from being too high, and the generation of water vapor is reduced.
3. The low reaches end slope of apopore upwards extends, and the gaseous bubble that intensifies the production that the aquatic contains to and the steam that the cooling water was heated and is produced moves up, along the slope apopore that upwards extends smooth discharge, avoid bubble and vapor to remain and lead to the cooling effect especially to the thermal-insulated effect decline of sealing ring in the cooling water annular, effectively guarantee sealing performance.
The following further description is made with reference to the accompanying drawings and detailed description.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the exhaust valve seat of the present invention;
fig. 3 is a cross-sectional view of fig. 2.
In the attached drawing, 1 is the cylinder head, 2 is the exhaust valve seat, 3 is the sealing ring, 4 is sealed glue, 5 is the cooling water annular, 6 is tertiary shoulder hole, 7 is first cooling inlet opening, 8 is second cooling inlet opening, 9 is the apopore.
Detailed Description
Referring to fig. 1 to 3, a specific embodiment of a mounting structure of a water-cooled exhaust valve seat of a cylinder head is shown. The mounting structure of the water-cooled exhaust valve seat of the cylinder head comprises the cylinder head 1 and an exhaust valve seat 2. The outer peripheral wall of the exhaust valve seat 2 is arranged to be in a secondary ladder shape, a sealing ring 3 is arranged on a small-diameter section of the outer peripheral wall of the exhaust valve seat 2, at least one circle of sealing glue 4 is arranged on a large-diameter section of the outer peripheral wall of the exhaust valve seat 2, specifically, a first annular groove is arranged on a small-diameter section of the outer peripheral wall of the exhaust valve seat 2, the sealing ring 3 is installed in the annular groove and fixed on the small-diameter section of the outer peripheral wall of the exhaust valve seat 2, the sealing ring adopts a sealing ring in the conventional gas engine field, two second annular grooves are arranged on the large-diameter section of the outer peripheral wall of the exhaust valve seat 2 and have a spacing distance, the sealing glue 4 is filled in the second annular groove and fixed on the large-diameter section of the outer peripheral wall of the exhaust valve seat 2, the sealing glue adopts a high-temperature flexible sealing, the third annular grooves are filled with sealant, specifically, the number of the third annular grooves is two, the two third annular grooves have a spacing distance, and the sealant also adopts conventional high-temperature flexible sealant in the field of gas engines. Be equipped with cooling water ring groove 5 on the path section of 2 periphery walls of exhaust valve seat, cooling water ring groove 5's interior empty respectively towards sealing ring 3, sealed glue 4 extension, separates sealing ring 3, sealed glue 4 and exhaust valve seat 2's hole. Be equipped with tertiary shoulder hole 6 on the cylinder head 1, be used for with cylinder combustion chamber intercommunication, be equipped with first cooling inlet opening 7 on the cylinder head 1, second cooling inlet opening 8, apopore 9, in this embodiment, first cooling inlet opening 7, second cooling inlet opening 8 parallel arrangement, 9 low reaches of apopore end slopes upwards to extend, first cooling inlet opening, the low reaches of second cooling inlet opening end and the upstream end of apopore are located the both ends of the same diameter of tertiary shoulder hole intermediate diameter section, in order to reduce the cooling water flow resistance, the flow area of apopore 9 is greater than first cooling inlet opening 7, the flow area sum of second cooling inlet opening 8. The path section interference fit of 2 periphery walls of exhaust valve seat is in the pitch diameter section of the tertiary shoulder hole 6 of cylinder head, the path section interference fit of 2 periphery walls of exhaust valve seat is in the path section of the tertiary shoulder hole 6 of cylinder head, 2 periphery walls of exhaust valve seat section, the connection terminal surface and the cylinder head path section of path section, the hole shoulder cooperation between the pitch diameter section, it is spacing to form the axial to exhaust valve seat 2, make the downstream end of first cooling inlet opening 7, the downstream end of second cooling inlet opening 8, the upstream end of apopore 9 communicates with the cooling water ring groove 5 of exhaust valve seat respectively.
The utility model discloses an operating principle does, and during the cooling water ring groove that cooling water got into the exhaust valve seat through first cooling inlet opening, second cooling inlet opening, around the cooling water ring groove flow, and separate sealing ring, sealed glue and exhaust valve seat's hole, the heat was taken away to the cooling water after, discharged from the apopore. The heat of the inner hole of the exhaust valve seat is taken away by cooling water, bubbles generated after the temperature of gas contained in the cooling water is raised and vapor generated after the temperature of the cooling water is raised move upwards and are discharged along the drain hole, no residue is generated, the cooling dead angle is avoided, and the sealing effect of the sealing ring and the sealant is effectively ensured.
Claims (6)
1. The utility model provides a mounting structure of cylinder head water-cooling exhaust valve seat which characterized in that: comprises a cylinder cover (1) and an exhaust valve seat (2),
the peripheral wall of the exhaust valve seat (2) is arranged in a secondary ladder shape, a sealing ring (3) is arranged on the small-diameter section of the peripheral wall of the exhaust valve seat (2), at least one circle of sealant (4) is arranged on the large-diameter section of the peripheral wall of the exhaust valve seat (2),
a cooling water ring groove (5) is arranged on the small-diameter section of the peripheral wall of the exhaust valve seat (2), the inner space of the cooling water ring groove (5) extends towards the sealing ring (3) and the sealant (4) respectively to separate the sealing ring (3) and the sealant (4) from the inner hole of the exhaust valve seat (2),
the cylinder cover (1) is provided with three-level stepped holes (6) for communicating with a combustion chamber of the cylinder, the cylinder cover (1) is provided with a first cooling water inlet hole (7), a second cooling water inlet hole (8) and a water outlet hole (9),
the small-diameter section of the outer peripheral wall of the exhaust valve seat (2) is in interference fit with the middle-diameter section of the three-level stepped hole (6) of the cylinder cover, and the large-diameter section of the outer peripheral wall of the exhaust valve seat (2) is in interference fit with the large-diameter section of the three-level stepped hole (6) of the cylinder cover, so that the downstream end of the first cooling water inlet hole (7), the downstream end of the second cooling water inlet hole (8) and the upstream end of the water outlet hole (9) are communicated with the cooling water ring groove (5) of the exhaust valve seat respectively.
2. The mounting structure of the cylinder head water-cooled exhaust valve seat according to claim 1, characterized in that: a first annular groove is formed in the small-diameter section of the outer peripheral wall of the exhaust valve seat (2), and the sealing ring (3) is installed in the annular groove and fixed on the small-diameter section of the outer peripheral wall of the exhaust valve seat (2); be equipped with at least one second annular on the big footpath section of exhaust valve seat (2) periphery wall, sealed glue (4) is filled in the second annular, fixes on the big footpath section of exhaust valve seat (2) periphery wall.
3. The mounting structure of the cylinder head water-cooled exhaust valve seat according to claim 1, characterized in that: the connection end faces of the large-diameter section and the small-diameter section of the outer peripheral wall of the exhaust valve seat (2) are matched with the hole shoulders between the large-diameter section and the middle-diameter section of the cylinder cover, and axial limiting is formed on the exhaust valve seat (2).
4. The mounting structure of the cylinder head water-cooled exhaust valve seat according to claim 3, characterized in that: be equipped with the third annular on the connection end face of exhaust valve seat (2) periphery wall major diameter section, minor diameter section, it has sealed glue to fill in the third annular.
5. The mounting structure of the cylinder head water-cooled exhaust valve seat according to claim 1, characterized in that: the flow area of the water outlet hole (9) is larger than the sum of the flow areas of the first cooling water inlet hole (7) and the second cooling water inlet hole (8).
6. The mounting structure of the cylinder head water-cooled exhaust valve seat according to claim 1, characterized in that: the downstream end of the water outlet hole (9) extends upwards in an inclined way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920757976.1U CN209855912U (en) | 2019-05-23 | 2019-05-23 | Mounting structure of cylinder head water-cooling exhaust valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920757976.1U CN209855912U (en) | 2019-05-23 | 2019-05-23 | Mounting structure of cylinder head water-cooling exhaust valve seat |
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| Publication Number | Publication Date |
|---|---|
| CN209855912U true CN209855912U (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920757976.1U Active CN209855912U (en) | 2019-05-23 | 2019-05-23 | Mounting structure of cylinder head water-cooling exhaust valve seat |
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| CN (1) | CN209855912U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352428A (en) * | 2021-12-16 | 2022-04-15 | 中国船舶重工集团公司第七一一研究所 | Split type cylinder head and cylinder |
-
2019
- 2019-05-23 CN CN201920757976.1U patent/CN209855912U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352428A (en) * | 2021-12-16 | 2022-04-15 | 中国船舶重工集团公司第七一一研究所 | Split type cylinder head and cylinder |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 400000 block B, Jiulong Park, Jiulongpo District, Chongqing Patentee after: Chongqing Pushi New Energy Technology Co.,Ltd. Address before: 400000 block B, Jiulong Park, Jiulongpo District, Chongqing Patentee before: CHONGQING PUSH MECHANISM Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |