A quick heat dissipation cover plate of a gas engine and its mounting structure

Abstract

The present invention discloses a rapid heat dissipation cover plate for a gas engine, comprising an exhaust surface that is in direct contact with the high-temperature and high-pressure gas discharged from the gas engine and a heat dissipation surface that is not in direct contact with the high-temperature and high-pressure gas discharged from the gas engine, the exhaust surface is provided with a whirlpool structure that is in contact with the high-temperature and high-pressure gas in succession and is used to reduce the impact of the high-temperature and high-pressure gas on the exhaust surface layer by layer, and the heat dissipation surface is provided with a heat-conducting structure that is used to increase its area to achieve a rapid heat dissipation function. The rapid heat dissipation cover plate designed by the present invention is in direct contact with the high-temperature gas discharged from the exhaust port when the gas engine is working, and the high-temperature gas is depressurized layer by layer through the whirlpool structure, thereby reducing the impact of the high-temperature gas on the cover plate layer by layer. At the same time, the heat dissipation area is increased by the heat-conducting structure on the back of the cover plate, rapid heat dissipation of the cover plate is achieved, and the service life of the cover plate is improved.

Description

Technical Field

[0001] The invention relates to the technical field of engine equipment, and in particular to a rapid heat dissipation cover plate of a gas engine and a mounting structure thereof. Background Art

[0002] With the continuous development of engine technology and supercharging technology, the explosion pressure of the engine has gradually increased, and the temperature of the exhaust gas has also increased accordingly, which has put forward higher requirements on the sealing reliability of the exhaust system. Traditional engine exhaust system gaskets have always used a double-layer or multi-layer stainless steel pressed sealing rib structure. This structure has high production costs, and the sealing ribs are prone to lose elasticity at high temperatures, which will eventually lead to leakage of high-temperature exhaust gas.

[0003] The patent with application number 201320469804.7 and titled "Single-layer Metal Exhaust System Gasket for Engine" discloses a single-layer metal exhaust system gasket for engine, which has a gasket body, bolt holes and gas passage holes are arranged on the gasket body, and full corrugated sealing ribs are arranged around the corresponding gas passage holes on the gasket body. The special feature is that the gasket body is made of a layer of stainless steel material, and an annular corrugated sealing rib is pressed on the inner side of the full corrugated sealing rib around the corresponding gas passage hole on the gasket body. The advantages are: since the gasket body is made of only one layer of stainless steel plate, the manufacturing cost is greatly reduced; the annular corrugated sealing rib around the airway hole is both the first rigid sealing belt and protects the full corrugated sealing rib on the outside, making the gasket sealing performance more stable.

[0004] The patent with application number 201420476220.7 and name "Engine Exhaust Gasket" discloses an engine exhaust gasket, including a gasket body, on which bolt holes and gas passage holes are arranged, and the gasket body is composed of three layers of stainless steel plates: upper, middle and lower. The special feature is that trapezoidal sealing ribs are arranged around the upper and lower stainless steel plates corresponding to the gas passage holes, and the middle stainless steel plate is folded inwards at the edge of the gas passage hole to form a flange. The beneficial effect is that the middle stainless steel plate is a flange structure, so that a height difference is formed around the gas passage hole, and the height difference remains constant at high temperature, fully protecting the sealing ribs of the upper and lower stainless steel plates to be effective; the trapezoidal sealing ribs form double sealing belts in a tightened state, making the sealing performance more reliable.

[0005] The application number is 201510142214.7, and the name is "An engine exhaust sealing structure". It discloses an engine exhaust sealing structure, including multiple O-type rubber sealing rings between the engine body and the cylinder liner on both sides of the high-temperature exhaust port, a cooling water channel is provided on the outside of the high-temperature exhaust port between the engine body and the cylinder liner, and a cooling water channel is also provided on the outside of the high-temperature exhaust port on the engine body. The advantages and positive effects of the present invention are: by arranging cooling water channels on the outside of the radial O-type rubber sealing ring and the outside of the high-temperature exhaust port for forced cooling, it is ensured that the working environment of the O-type rubber sealing ring is always within the safe working temperature; and the matching clearance between the cylinder liner and the high-temperature exhaust port and the distance between the adjacent O-type rubber sealing ring and the high-temperature exhaust port are reasonably designed; the gap between the cylinder liner and the high-temperature exhaust port is eliminated, so that the high-temperature gas can pass through the high-temperature exhaust port smoothly without burning the rubber sealing ring.

[0006] The disadvantages of the exhaust gaskets designed in the above three patents are: the exhaust gaskets are all flat structures without heat dissipation grooves. Since the intermittent high-temperature and high-pressure gas discharged by the gas engine directly contacts the gasket, the gasket will be subjected to constant high-temperature and high-pressure impacts, and a large amount of oil and gas will adhere to the gasket at the same time, reducing the service life of the exhaust gasket. Summary of the invention

[0007] The purpose of the present invention is to solve the deficiencies of the above-mentioned background technology and to provide a rapid heat dissipation cover plate for a gas engine which can effectively prevent leakage of engine oil and efficiently dissipate heat from engine exhaust.

[0008] To achieve this purpose, the rapid heat dissipation cover plate of the gas engine designed in the present invention includes an exhaust surface that is in direct contact with the high-temperature and high-pressure gas discharged by the gas engine and a heat dissipation surface that is not in direct contact with the high-temperature and high-pressure gas discharged by the gas engine. The exhaust surface is provided with a convoluted structure that is in contact with the high-temperature and high-pressure gas in turn and is used to reduce the impact of the high-temperature and high-pressure gas on the exhaust surface layer by layer. The heat dissipation surface is provided with a heat-conducting structure that is used to increase its area to achieve a rapid heat dissipation function.

[0009] Furthermore, the heat dissipation surface includes a rapid heat dissipation surface located on the back of the exhaust surface and a side heat dissipation surface connected between the side edge of the exhaust surface and the side edge of the rapid heat dissipation surface; the heat conductive structure is arranged on the rapid heat dissipation surface.

[0010] Furthermore, a sealing structure is provided on the outer side of the last part of the swirl structure that contacts the high-temperature and high-pressure gas to prevent the oil carried by the high-temperature and high-pressure gas from overflowing.

[0011] Furthermore, the swirling structure includes a plurality of swirling grooves opened on the exhaust surface, and the plurality of swirling grooves are concentrically arranged along the center side of the exhaust surface toward the outer side of the exhaust surface at intervals.

[0012] Furthermore, the width and depth of the convoluted groove are both in the range of 1.5 mm to 2.5 mm.

[0013] Furthermore, the number of the convolution grooves is not less than three.

[0014] Furthermore, the sealing structure includes an annular sealing ring fixed on the exhaust surface.

[0015] Furthermore, the heat-conducting structure includes a plurality of heat-conducting grooves spaced apart along a height direction of the rapid heat dissipation surface.

[0016] Furthermore, the width of the heat conduction grooves ranges from 1.5 mm to 2.5 mm.

[0017] Furthermore, the installation structure of the rapid heat dissipation cover plate of the gas engine includes the rapid heat dissipation cover plate of the gas engine and the gas engine described above, the rapid heat dissipation cover plate of the gas engine is an inverted triangle structure, and a bolt sleeve with an internal thread is vertically fixed on the left and right sides of the top and the bottom, and the bolt is fixed to the gas engine through the bolt sleeve, and the convolute structure of the exhaust surface is arranged opposite to the exhaust port of the gas engine, and the exhaust surface covers the exhaust port of the gas engine.

[0018] The beneficial effects of the present invention are as follows: the fast heat dissipation cover plate designed by the present invention is in direct contact with the high-temperature gas discharged from the exhaust port of the gas engine cooler when it is working, and the high-temperature gas is depressurized layer by layer through the swirling structure, thereby reducing the impact of the high-temperature gas on the cover plate layer by layer. At the same time, the heat dissipation area is increased by the heat-conducting structure on the back of the cover plate, and the rapid heat dissipation of the cover plate is achieved, thereby increasing the life of the cover plate. The sealing structure prevents the oil carried by the high-temperature gas from overflowing and returns to the gas engine, ensuring that the oil inside the gas engine does not overflow while the gas engine is dissipating the heat through exhaust, thereby ensuring the stable function of the gas engine, saving costs, and preventing other components from being damaged by the overflowing oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A front view of a quick heat dissipation cover plate for a gas engine designed by the present invention;

[0020] Figure 2 for Figure 1 Middle AA section view;

[0021] Figure 3A rear view of the rapid heat dissipation cover plate of the gas engine designed for the present invention;

[0022] Figure 4 A front view of the installation structure of the rapid heat dissipation cover plate of the gas engine designed by the present invention;

[0023] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0024] Among them, 1 is the exhaust surface, 2 is the heat dissipation surface (2.1 is the rapid heat dissipation surface, 2.2 is the side heat dissipation surface), 3 is the convolution groove, 4 is the annular sealing ring, 5 is the heat conduction groove, 6 is the gas engine, 7 is the bolt sleeve, and 8 is the bolt. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] like Figure 1 —5 shows a rapid heat dissipation cover plate for a gas engine, comprising an exhaust surface 1 in direct contact with the high-temperature and high-pressure gas discharged from the gas engine and a heat dissipation surface 2 which is not in direct contact with the high-temperature and high-pressure gas discharged from the gas engine, wherein the heat dissipation surface 2 comprises a rapid heat dissipation surface 2.1 located on the back of the exhaust surface 1 and a side heat dissipation surface 2.2 connected between the side edge of the exhaust surface 1 and the side edge of the rapid heat dissipation surface 2.1.

[0027] The exhaust surface 1 is provided with a vortex structure which contacts with the high-temperature and high-pressure gas successively and is used to reduce the impact of the high-temperature and high-pressure gas on the exhaust surface 1 layer by layer. The vortex structure includes a plurality of vortex grooves 3 opened on the exhaust surface 1. The plurality of vortex grooves 3 are concentrically arranged from the center side of the exhaust surface 1 to the outer side of the exhaust surface 1, and the vortex grooves 3 are square. A sealing structure for preventing the oil carried by the high-temperature and high-pressure gas from overflowing is provided on the outer side of the vortex structure that contacts with the high-temperature and high-pressure gas at the end. The sealing structure includes an annular sealing ring 4 fixed on the exhaust surface 1, and the annular sealing ring 4 is square. Preferably, in the present invention, the width and depth of the vortex groove 3 are both 2 mm, and the number of the vortex grooves 3 is three.

[0028] The rapid heat dissipation surface 2.1 is provided with a heat conduction structure for increasing its area to realize the rapid heat dissipation function. The heat conduction structure includes a plurality of heat conduction grooves 5 spaced apart along the height direction of the rapid heat dissipation surface 2.1. The width of the heat conduction grooves 5 is 2 mm. The number of the heat conduction grooves 5 is designed to be 19.

[0029] like Figure 4 —5 shows the installation structure of the rapid heat dissipation cover plate of the gas engine, including the rapid heat dissipation cover plate of the gas engine and the gas engine 6 mentioned above. The rapid heat dissipation cover plate of the gas engine 6 is an inverted triangle structure, and a bolt sleeve 7 with an internal thread is vertically fixed on the left and right sides of the top and the bottom. The bolt 8 is fixed to the gas engine 6 through the bolt sleeve 7. The convolute structure of the exhaust surface 1 is arranged opposite to the exhaust port of the gas engine 6, and the exhaust surface 1 covers the exhaust port of the gas engine 6.

[0030] Embodiment 2:

[0031] Another quick heat dissipation cover plate for a gas engine of the present invention has a generally similar structure to that of the first embodiment, except that the swirl groove 3 is circular in shape, and correspondingly, the annular sealing ring 4 is also circular in shape.

[0032] Embodiment 3:

[0033] Another quick heat dissipation cover plate of a gas engine of the present invention has a generally similar structure to that of the first embodiment. The heat conduction groove 5 completely covers the arrangement range of the gyration groove 3 and the annular sealing ring 4. Figure 1 and 2 A plurality of heat-conducting grooves 5 are also provided on the upper portion of the rapid heat dissipation surface 2.1.

[0034] Embodiment 4:

[0035] Another quick heat dissipation cover plate for a gas engine of the present invention has an overall structure that is basically the same as that of Example 1, except that a plurality of heat conduction grooves 5 are also provided on the side heat dissipation surface 2.2, and the plurality of heat conduction grooves 5 are evenly spaced along the height direction of the side heat dissipation surface 2.2.

[0036] Embodiment 5:

[0037] Another quick heat dissipation cover plate of a gas engine of the present invention has an overall structure that is substantially the same as that of the first embodiment, except that the quick heat dissipation cover plate is an equilateral triangle structure or a trapezoidal structure.

[0038] In the present invention, it is necessary to seal the exhaust port of the front section of the cooler of the gas engine 6. Therefore, a rapid heat dissipation cover is designed for the exhaust port of the front section of the cooler. During operation, the gas engine 6 intermittently discharges 2500 bar high-temperature and high-pressure gas, and part of the gas acts on the swirling structure of the rapid heat dissipation cover, which reduces the pressure of the gas layer by layer by the swirling structure cover, thereby reducing the impact on the cover. The back side of the rapid heat dissipation cover adopts a heat conduction groove design to increase the heat dissipation area of ​​the cover, dissipate heat quickly, and increase the service life of the cover.

[0039] The fast heat dissipation cover plate designed by the present invention is in direct contact with the high-temperature gas discharged from the exhaust port of the gas engine cooler when it is working. The high-temperature gas is depressurized layer by layer through the swirling structure, and the impact of the high-temperature gas on the cover plate is reduced layer by layer. At the same time, the heat dissipation area is increased by the heat-conducting structure on the back of the cover plate, and the rapid heat dissipation of the cover plate is achieved, thereby improving the life of the cover plate. The sealing structure prevents the oil carried by the high-temperature gas from overflowing and returns to the gas engine 6, ensuring that the oil inside the gas engine 6 does not overflow while the gas engine 6 is dissipating the heat through exhaust, thereby ensuring the stable function of the gas engine 6, saving costs, and preventing other components from being damaged by the overflowing oil.

[0040] It should be noted that the description of the above technical solutions is exemplary, and this specification can be embodied in different forms and should not be interpreted as being limited to the technical solutions set forth herein. On the contrary, providing these descriptions will make the disclosure of the present invention thorough and complete, and will fully convey the scope disclosed in this specification to those skilled in the art. In addition, the technical solutions of the present invention are limited only by the scope of the claims. The shapes, sizes, ratios, angles and numbers disclosed in various aspects of the present specification and claims are merely examples, and therefore, the present specification and claims are not limited to the details shown. In the following description, when a detailed description of a related known function or configuration is determined to unnecessarily obscure the focus of the present specification and claims, the detailed description will be omitted. Finally, it should be noted that the above embodiments are only more representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments, and there may be many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall be deemed to belong to the protection scope of the present invention.

Claims

1. A rapid heat dissipation cover plate for a gas engine, comprising an exhaust surface (1) in direct contact with high-temperature and high-pressure gas discharged from the gas engine and a heat dissipation surface (2) not in direct contact with the high-temperature and high-pressure gas discharged from the gas engine, characterized in that: The exhaust surface (1) is provided with a swirling structure which contacts with the high-temperature and high-pressure gas successively and is used to reduce the impact of the high-temperature and high-pressure gas on the exhaust surface (1) layer by layer, and the heat dissipation surface (2) is provided with a heat-conducting structure which is used to increase its area to realize a rapid heat dissipation function.

2. The rapid heat dissipation cover plate of the gas engine according to claim 1, characterized in that: The heat dissipation surface (2) comprises a rapid heat dissipation surface (2.1) located on the back side of the exhaust surface (1) and a side heat dissipation surface (2.2) connected between the side edge of the exhaust surface (1) and the side edge of the rapid heat dissipation surface (2.1); the heat conduction structure is arranged on the rapid heat dissipation surface (2.1).

3. The rapid heat dissipation cover plate of the gas engine according to claim 1, characterized in that: A sealing structure for preventing the oil carried by the high-temperature and high-pressure gas from overflowing is arranged on the outer side of the last part of the swirl structure that contacts the high-temperature and high-pressure gas.

4. The rapid heat dissipation cover plate for a gas engine as claimed in claim 3, characterized in that: The swirling structure comprises a plurality of swirling grooves (3) opened on the exhaust surface (1), and the plurality of swirling grooves (3) are arranged concentrically and spaced apart from the center side of the exhaust surface (1) toward the outer side of the exhaust surface (1).

5. The rapid heat dissipation cover plate for a gas engine as claimed in claim 4, characterized in that: The width and depth of the convolution groove (3) are both in the range of 1.5 mm to 2.5 mm.

6. The rapid heat dissipation cover plate for a gas engine as claimed in claim 5, characterized in that: The number of the convolution grooves (3) is not less than three.

7. The rapid heat dissipation cover plate for a gas engine as claimed in claim 3, characterized in that: The sealing structure comprises an annular sealing ring (4) fixed on the exhaust surface (1).

8. The rapid heat dissipation cover plate for a gas engine as claimed in claim 2, characterized in that: The heat-conducting structure comprises a plurality of heat-conducting grooves (5) spaced apart along the height direction of the rapid heat dissipation surface (2.1).

9. The rapid heat dissipation cover plate for a gas engine as claimed in claim 8, characterized in that: The width of the heat-conducting groove (5) ranges from 1.5 mm to 2.5 mm.

10. A mounting structure for a quick heat dissipation cover plate of a gas engine, characterized in that: A gas engine quick heat dissipation cover plate and a gas engine (6) comprising any one of claims 1 to 9, characterized in that: the quick heat dissipation cover plate of the gas engine (6) is an inverted triangle structure, and a bolt sleeve (7) with an internal thread is vertically fixed on the left and right sides of the top and the bottom, and the bolt (8) passes through the bolt sleeve (7) and is fixed to the gas engine (6), and the convoluted structure of the exhaust surface (1) is arranged opposite to the exhaust port of the gas engine (6), and the exhaust surface (1) covers the exhaust port of the gas engine (6).

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