High-power gas engine cylinder head

Abstract

A high-power gas engine cylinder head, comprising a cylinder head body (1) provided with a water cavity, and a mounting seat (3) located in the water cavity, wherein an annular cavity is formed between the mounting seat (3) and the water cavity; a middle partition plate (2), which is of a spherical structure and divides the water cavity into an upper water cavity (11) and a lower water cavity (12), is provided in the water cavity; a cooling water hole (4) in communication with the lower water cavity (12) is provided in the bottom of the cylinder head body (1); and the lower water cavity (12) is in communication with the upper water cavity (11). The middle partition plate (2) realizes effective cooling of an exhaust valve mounting seat (32) by means of providing a cooling hole (321), and further improves cooling of the cylinder head body (1) by means of providing the cooling water hole (4), thereby reducing heat load; and the spherical middle partition plate (2) can uniformly disperse pressure, improve mechanical load bearing capacity, and further improve the rigidity and strength of the cylinder head, thereby improving the reliability of the cylinder head, and prolonging the service life of the cylinder head.

Description

A high-power gas engine cylinder head Technical Field

[0001] The present invention relates to the technical field of gas engines, and more particularly to a cylinder head of a high-power gas engine. Background Art

[0002] At present, the cylinder head of a high-power engine uses a flat baffle to support and fix the mounting base. The flat baffle has limited ability to withstand mechanical loads and is easily damaged. The mounting base is not effectively cooled, and the air valve is easily stuck during use. The gas and air cannot be fully mixed, resulting in incomplete combustion, which increases fuel consumption and usage costs.

[0003] Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a high-power gas engine cylinder head;

[0005] The solution adopted by the present invention to solve the technical problem is:

[0006] A high-power gas engine cylinder head comprises a cylinder head body provided with a water cavity, and a mounting seat located in the water cavity and forming an annular cavity between the water cavity and the mounting seat; a spherical partition is provided in the water cavity and divides the water cavity into an upper water cavity and a lower water cavity; a cooling water hole is provided at the bottom of the cylinder head body and communicates with the lower water cavity; the lower water cavity and the upper water cavity are communicated with each other.

[0007] The present invention divides the water chamber into an upper water chamber and a lower water chamber by providing a spherical middle partition. Since the middle partition has a spherical curved surface structure, it can achieve uniform distribution of surrounding pressure after being connected to the cylinder head body, thereby improving the cylinder head's ability to withstand mechanical loads.

[0008] By setting up cooling water holes, the cooling water from the engine body water channel first flows through the cylinder liner, passes through the water pipe between the cylinder liner and the cylinder head body, and enters the water cavity for cooling through the cooling water holes at the bottom of the cylinder head body; by increasing the number of water inlet holes, the flow capacity into the cylinder head is increased, effectively reducing the thermal load of the cylinder head.

[0009] In some possible implementations, in order to effectively install the intake valve, the exhaust valve, and the injector; and to achieve effective cooling of the exhaust valve;

[0010] The mounting seat includes an intake valve mounting seat and an exhaust valve mounting seat; a cooling hole communicating with the interior of the exhaust valve mounting seat and the annular cavity is provided on the cylinder head body.

[0011] In some possible implementations, the cooling hole is provided on a side of the exhaust valve mounting seat close to the bottom of the cylinder head body and is communicated with the lower water cavity.

[0012] In some possible implementations, in order to effectively cool the exhaust valve mounting seat;

[0013] The exhaust valve mounting seat is provided with a mounting hole 1 for mounting the exhaust valve seat, and the intake valve mounting seat is provided with a mounting hole 2 for mounting the intake valve seat; one end of the cooling hole is connected to the mounting hole 1 and the other end is connected to the annular cavity.

[0014] In some possible implementations, in order to effectively achieve air intake and exhaust, and to allow the gas and air to be fully mixed;

[0015] The cylinder head body is provided with an intake passage communicating with the intake valve mounting seat, an exhaust passage communicating with the exhaust valve mounting seat, and a fuel gas inlet communicating with the intake passage.

[0016] In some possible implementations, the axial direction of the gas inlet is parallel to the axial direction of the first mounting hole and is arranged outside the water cavity.

[0017] In some possible implementations, a connection structure for connecting the cylinder head body and the cover is provided on the top of the cylinder head body.

[0018] In some possible implementations, in order to effectively achieve a sealed connection between the cylinder head body and the cover;

[0019] The connection structure includes a plurality of bolt holes arranged on the cylinder head body, and a sealing ring installed on the cylinder head body and located between the cover and the cylinder head body.

[0020] In some possible implementations, the cooling water holes are at least six groups.

[0021] In some possible implementations, in order to effectively achieve communication between the upper water chamber and the lower water chamber;

[0022] The exhaust valve mounting seat and the intake valve mounting seat are both in two groups and are in a rectangular array. The exhaust valve mounting seat and the intake valve mounting seat are connected in sequence to form a mounting seat with a valve core in the middle. A mounting hole three for mounting the injector is provided in the valve core. The exhaust valve mounting seat and the intake valve mounting seat are both in two groups and are evenly arranged along the circumference of the valve core; the axial directions of the mounting hole one, the mounting hole two, and the mounting hole three are parallel to each other; the valve core is provided with a through hole one for connecting the mounting hole three with the lower water cavity, and a through hole two for connecting the mounting hole three with the upper water cavity.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention provides a spherical curved surface structure for the center baffle, wherein the inner side of the spherical curved surface is arranged on the side close to the top of the cylinder head body, and the outer side is arranged on the side close to the bottom of the cylinder head body; the center baffle is connected to the cylinder head body to form an integral body; compared with the flat center baffle in the prior art, the center baffle in the present invention can evenly distribute pressure, improve mechanical load bearing capacity, and thus improve the rigidity and strength of the cylinder head, thereby greatly improving the reliability and service life of the cylinder head;

[0025] The present invention effectively realizes cooling of the exhaust valve mounting seat by providing cooling holes, further improves cooling of the cylinder head body by providing cooling water holes, and reduces heat load;

[0026] The present invention provides a connecting structure on the cylinder head body to achieve connection with the cover through the connecting structure, thereby effectively preventing the problem of oil leakage on the top of the cylinder head;

[0027] The present invention provides a gas inlet connected to the air inlet, so that the gas and air are mixed more evenly, the combustion is more complete, the use cost is reduced, and the use safety is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a cross-sectional view of the present invention;

[0029] FIG2 is a top view of the present invention;

[0030] FIG3 is a cross-sectional view taken along line AA in FIG1 ;

[0031] FIG4 is a schematic diagram of a three-dimensional structure of the present invention;

[0032] FIG5 is a schematic diagram of the present invention connected to the cover;

[0033] FIG6 is a schematic diagram of the cooling hole and the annular cavity in the present invention;

[0034] Among them: 1. Cylinder head body; 11. Upper water cavity; 12. Lower water cavity; 2. Middle partition; 3. Mounting seat; 31. Intake valve mounting seat; 32. Exhaust valve mounting seat; 321. Cooling hole; 33 Valve core; 4. Cooling water hole; 5. Bolt hole; 6. Sealing ring; 7. Clamping bolt; 8. Intake duct; 9. Gas inlet; 10. Cover. DETAILED DESCRIPTION

[0035] In this application, unless otherwise specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integration; they can refer to direct connections or indirect connections through an intermediary; they can refer to internal communication between two components or interactions between two components. The terms "first," "second," and similar terms mentioned in this application do not denote any order, quantity, or importance; they are simply used to distinguish between different components. Similarly, terms such as "one" or "a" do not indicate a quantitative limitation; rather, they indicate the presence of at least one. In the implementation of this application, "and / or" describes an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. In the description of the embodiments of this application, unless otherwise specified, "plurality" means two or more. For example, "plurality" refers to two or more positioning posts. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0036] The present invention is described in detail below.

[0037] As shown in Figures 1 to 6:

[0038] A high-power gas engine cylinder head comprises a cylinder head body 1 provided with a water cavity, a mounting seat 3 located within the water cavity and forming an annular cavity therebetween; a spherical partition plate 2 is provided within the water cavity and divides the water cavity into an upper water cavity 11 and a lower water cavity 12; at least six groups of cooling water holes 4 are provided at the bottom of the cylinder head body 1, communicating with the lower water cavity 12; the lower water cavity 12 and the upper water cavity 11 are communicated with each other.

[0039] The water cavity has an opening, and the mounting seat 3 is located in the water cavity to close the opening of the water cavity and realize the communication between the upper water cavity 11 and the lower water cavity 12. The cooling water from the body water channel first flows through the cylinder liner, passes through the water pipe between the cylinder liner and the cylinder head, and enters the lower water cavity 12 through the cooling water hole 4 set at the bottom of the cylinder head body 1, and enters the upper water cavity 11 after passing through the mounting seat 3, thereby realizing the cooling of the corresponding cylinder head body 1; the present invention increases the flow capacity of the flow into the cylinder head by increasing the number of cooling water holes 4, thereby effectively reducing the heat load of the cylinder head.

[0040] The present invention divides the water chamber into an upper water chamber 11 and a lower water chamber 12 by providing a spherical middle partition 2. Since the middle partition 2 has a spherical curved surface structure, it can achieve uniform distribution of surrounding pressure after being connected to the cylinder head body 1, thereby improving the cylinder head's ability to withstand mechanical loads.

[0041] In some possible implementations, in order to effectively install the intake valve, the exhaust valve, and the injector; and to achieve effective cooling of the exhaust valve;

[0042] The mounting seat 3 includes an intake valve mounting seat 31 and an exhaust valve mounting seat 32; a cooling hole 321 is provided on the cylinder head body 1, which is connected to the inside of the exhaust valve mounting seat 32 and the annular cavity; the cooling hole 321 is provided on one side of the exhaust valve mounting seat 32 close to the bottom of the cylinder head body 1 and is connected to the lower water cavity 12.

[0043] In order to effectively cool the exhaust valve mounting seat 32 and effectively reduce the temperature at the exhaust valve mounting seat 32 during combustion and exhaust;

[0044] The exhaust valve mounting seat 32 is provided with a mounting hole 1 for mounting the exhaust valve seat, and the intake valve mounting seat 31 is provided with a mounting hole 2 for mounting the intake valve seat; one end of the cooling hole 321 is connected to the mounting hole 1 and the other end is connected to the annular cavity.

[0045] In order to effectively realize the communication between the upper water chamber 11 and the lower water chamber 12; the exhaust valve mounting seat 32 and the intake valve mounting seat 31 are both two groups and are in a rectangular array, the intake valve mounting seat 31 and the exhaust valve mounting seat 32 are connected in sequence to form a mounting seat 3 with a valve core 33 in the middle, and a mounting hole three for installing the injector is provided in the valve core 33. The exhaust valve mounting seat 32 and the intake valve mounting seat 31 are both two groups and are evenly arranged along the circumference of the valve core 33; the axial directions of the mounting hole one, the mounting hole two and the mounting hole three are parallel to each other; the valve core 33 is provided with a through hole one for connecting the mounting hole three with the lower water chamber 12, and a through hole two for connecting the mounting hole three with the upper water chamber 11.

[0046] The mounting seat 3 is identical to the mounting seat in the prior art and includes two sets of intake valve mounting seats 31 for mounting the intake valves, two sets of exhaust valve mounting seats 32 for mounting the exhaust valves, and a valve core 33 formed by the connection between the intake and exhaust valves. The axes of the first, second, and third mounting holes are parallel to each other, and the intake and exhaust valve mounting seats 31 and 32 are evenly arranged around the circumference of the valve core 33. A through hole 1 provided in the valve core 33 transports cooling water from the lower water chamber 12 into the valve core 33, and then transfers it to the upper water chamber 11 through the second through hole, so that the entire annular chamber is filled with cooling water, thereby cooling the cylinder head body 1 and reducing the heat load.

[0047] The arrangement of the cooling holes 321 allows the cooling water in the lower water chamber 12 to enter the exhaust valve mounting seat 32, thereby effectively cooling the exhaust valve mounting seat 32. The cooling holes 321 include a group of cooling holes 1, one end of which is connected to the lower water chamber 12 and the other end of which is connected to the mounting hole 1, and a group of cooling holes 2, one end of which is connected to the mounting hole 1 and the other end of which is connected to the mounting hole 3.

[0048] The cooling water flows from the lower water chamber 12 through the cooling hole 1 into the mounting hole 1 to cool the exhaust valve mounting seat 32, and then flows through the cooling hole 2 to the mounting hole 3 of the valve core 33, and then flows through the through hole 2 along with the cooling water in the mounting hole 3 into the upper water chamber 11;

[0049] In some possible implementations, in order to effectively achieve air intake and exhaust, and to allow the gas and air to be fully mixed;

[0050] The cylinder head body 1 is provided with an intake passage, an exhaust passage, and a fuel gas inlet communicating with the intake passage.

[0051] In some possible implementations, the axial direction of the gas inlet is parallel to the axial direction of the first mounting hole and is arranged outside the water cavity.

[0052] The intake passage includes an intake main pipe, an intake branch pipe connected to the intake main pipe and the intake valve mounting seat 31 respectively; the exhaust passage is communicated with the exhaust valve mounting seat 32.

[0053] Furthermore, the gas inlet is connected to the inlet section of the intake main pipe, and the gas and air are mixed at the inlet of the intake duct, which ensures uniform mixing and avoids leakage that may be caused by mixing on the intake branch pipe;

[0054] It should be noted that if the cylinder head is used for a pure diesel engine, it is only necessary to block the gas inlet.

[0055] In some possible implementations, in order to effectively achieve a sealed connection between the cylinder head body 1 and the cover 10;

[0056] A connecting structure for connecting the cylinder head body 1 and the cover 10 is provided on the top of the cylinder head body 1 .

[0057] The connection structure includes a plurality of bolt holes 5 provided on the cylinder head body 1 , and a sealing ring 6 installed on the cylinder head body 1 and located between the cover 10 and the cylinder head body 1 .

[0058] Furthermore, multiple groups of bolt holes 5 are evenly arranged, and there are at least four groups; the cover 10 is connected to the top of the cylinder head body 1 through at least four groups of clamping bolts 7, and a sealing ring 6 is arranged between the two, which ensures that the bottom of the cover 10 is evenly compressed and the sealing ring 6 is evenly deformed by force, effectively preventing the problem of oil leakage on the top of the cylinder head.

[0059] The present invention is not limited to the aforementioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A cylinder head of a high-power gas engine, characterized in that, It includes a cylinder head body provided with a water cavity, and a mounting seat located in the water cavity and forming an annular cavity with the water cavity; a middle partition plate in a spherical structure is arranged in the water cavity and divides the water cavity into an upper water cavity and a lower water cavity. Cooling water holes communicating with the lower water cavity are arranged at the bottom of the cylinder head body; the lower water cavity communicates with the upper water cavity.

2. The cylinder head of a high-power gas engine according to claim 1, characterized in that, The mounting seat includes an intake valve mounting seat and an exhaust valve mounting seat; cooling holes communicating with the inside of the exhaust valve mounting seat and the annular cavity are arranged on the cylinder head body.

3. A cylinder head of a high-power gas engine according to claim 2, characterized in that, The cooling holes are arranged on one side of the exhaust valve mounting seat close to the bottom of the cylinder head body and communicate with the lower water cavity.

4. A cylinder head of a high-power gas engine according to claim 2, characterized in that, The exhaust valve mounting seat is provided with a first mounting hole for mounting an exhaust valve seat, and the intake valve mounting seat is provided with a second mounting hole for mounting an intake valve seat; one end of the cooling hole communicates with the first mounting hole and the other end communicates with the annular cavity.

5. A cylinder head of a high-power gas engine according to claim 4, characterized in that, An intake passage, an exhaust passage, and a gas inlet communicating with the intake passage are arranged on the cylinder head body.

6. The cylinder head of a high-power gas engine according to claim 5, characterized in that, The axial direction of the gas inlet is parallel to the axial direction of the first mounting hole and is arranged outside the water cavity.

7. A cylinder head of a high-power gas engine according to any one of claims 1-6, characterized in that, A connecting structure for connecting the cylinder head body and a cover is arranged at the top of the cylinder head body.

8. A cylinder head of a high-power gas engine according to claim 7, characterized in that, The connecting structure includes a plurality of groups of bolt holes arranged on the cylinder head body, and a sealing ring installed on the cylinder head body and located between the cover and the cylinder head body.

9. A cylinder head of a high-power gas engine according to claim 8, characterized in that, The cooling water holes are at least six groups.

10. A cylinder head of a high-power gas engine according to claim 4, characterized in that, Both the exhaust valve mounting seat and the intake valve mounting seat are two groups and are arranged in a rectangular array. The exhaust valve mounting seat and the intake valve mounting seat are sequentially connected to form a mounting seat with a valve core in the middle. A third mounting hole for mounting an injector is arranged in the valve core. Both the exhaust valve mounting seat and the intake valve mounting seat are two groups and are evenly arranged along the circumferential direction of the valve core; the axes of the first mounting hole, the second mounting hole, and the third mounting hole are parallel to each other; a first through hole for communicating the third mounting hole with the lower water cavity and a second through hole for connecting the third mounting hole with the upper water cavity are arranged on the valve core.

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