Cylinder pipe structure with cooling function for diesel engine
By designing the combined structure of the inner and outer cylinder liners and coating treatment, the low heat dissipation efficiency and corrosion problems of the wet cylinder liner of the diesel engine are solved, the effects of efficient heat dissipation and corrosion prevention are achieved, and the service life of the cylinder liner is extended.
Patent Information
- Application Number
- CN202423160214.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The existing diesel engine wet cylinder liner has low heat dissipation efficiency and is easily corroded, making it difficult to meet the needs of long-term use.
A cylinder tube structure with an inner cylinder liner, a guide groove, a heat dissipation groove, an outer cylinder liner and a corrugated arc groove was designed. The heat dissipation area was increased by connecting the guide groove and the heat dissipation groove, and anti-wear and anti-corrosion coatings were applied inside the groove to improve the sealing and corrosion resistance.
It improves the heat dissipation efficiency, extends the service life of the cylinder liner, prevents corrosion caused by increased flow rate, and ensures the normal operation of the device in high temperature and high pressure environments.
Smart Images
Figure CN223482771U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine cylinder liner technology, specifically to a cylinder tube structure for a diesel engine with cooling function. Background Technology
[0002] The cylinder liner of a diesel engine is a crucial component of the combustion chamber. Its main function is to form a space with the cylinder head and piston for gas compression, combustion, and expansion, and to guide the reciprocating motion of the piston. During diesel engine operation, the cylinder liner also transfers some heat to cooling water or air to ensure the combustion chamber components function properly in a high-temperature, high-pressure environment.
[0003] Existing cylinder liners are divided into dry and wet types. Wet cylinder liners dissipate heat through coolant transfer during use, but the efficiency depends on the power of the cooling pump, resulting in low heat dissipation efficiency. Furthermore, after prolonged use, the surface is prone to corrosion, making it difficult to meet current requirements. Therefore, this application provides a cylinder tube structure for a diesel engine with a cooling function. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model proposes a cylinder pipe structure for diesel engines with cooling function that can increase the heat dissipation area and prevent flow-induced corrosion.
[0005] The technical solution of this utility model is implemented as follows:
[0006] A cylinder tube structure for a diesel engine with cooling function includes an inner cylinder liner. The inner cylinder liner includes a guide groove, a heat dissipation groove, an annular band, and a sealing water ring. The guide groove and the heat dissipation groove are interconnected. The diameter of the heat dissipation groove is slightly shorter than that of the guide groove. The structure also includes:
[0007] The outer cylinder liner is movably connected to the outside of the guide groove and the heat dissipation groove. The outer cylinder liner has corrugated arc grooves on its outside. The corrugated arc grooves are multiple and evenly distributed on the outside of the outer cylinder liner. The corrugated arc grooves are wavy in shape and connected to each other end to end. The outer cylinder liner is tightly fitted to the outside of the guide groove.
[0008] Furthermore, a flange is fixedly connected to the outside of the inner cylinder liner, and a heat dissipation ring is fixedly connected between the flange and the guide groove. The diameter of the flange is larger than that of the heat dissipation ring, and the diameter of the heat dissipation ring is equal to that of the outer cylinder liner.
[0009] Furthermore, the heat dissipation groove is formed in the middle of the inner cylinder liner, and there are multiple sets of heat dissipation grooves evenly distributed in the middle of the inner cylinder liner. The flow guide groove is formed at the edge of the heat dissipation groove, and there are two sets of flow guide grooves symmetrically distributed outside the heat dissipation groove. There are multiple sets of flow guide grooves distributed in a circle outside the heat dissipation groove.
[0010] Furthermore, the annular belt is fixedly connected to the bottom of the inner cylinder liner, and an installation groove is provided on the outside of the annular belt. The sealing water ring is movably connected to the outside of the installation groove, and a sealing flap is fixedly connected to the outside of the sealing water ring.
[0011] Furthermore, there are two sets of mounting grooves symmetrically distributed outside the annular belt, and multiple sets of sealing flaps are circumferentially distributed outside the sealing water ring.
[0012] Furthermore, the sealing flap is in contact with the inner wall of the mounting groove, and the sealing flap is relatively soft and easily deformable.
[0013] Furthermore, the outer surface of the guide channel is coated with an anti-wear coating, which increases the friction between the outer cylinder liner and the guide channel.
[0014] Furthermore, both the corrugated arc groove and the heat dissipation groove are coated with an anti-corrosion coating.
[0015] This utility model has the following beneficial effects:
[0016] 1. By setting up an inner cylinder liner, guide groove, heat dissipation groove and sealing flap, the device allows the sealing water ring to expand and seal through the installation groove during installation, while the deformation fills the seal, further improving the overall sealing performance of the inner cylinder liner. At the same time, it increases the external heat exchange area of the inner cylinder liner and improves the heat dissipation efficiency.
[0017] 2. By setting an outer cylinder liner, corrugated arc groove, anti-wear coating and anti-corrosion coating, the coolant can accelerate its flow rate through the corrugated arc groove by relying on the canyon effect, while reducing accelerated corrosion caused by increased flow rate and improving the service life of the device. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall appearance of this utility model;
[0019] Figure 2 This is a side sectional view of the internal structure of this utility model;
[0020] Figure 3 This is an exploded view of the overall structure of this utility model;
[0021] Figure 4 This is a utility model Figure 2 Enlarged view of the structure at point A in the image.
[0022] Among them: 1. Inner cylinder liner; 101. Flange; 102. Heat dissipation ring; 103. Guide groove; 104. Heat dissipation groove; 105. Circular belt; 106. Mounting groove; 107. Sealing water ring; 108. Sealing flap; 109. Anti-wear coating; 2. Outer cylinder liner; 201. Corrugated arc groove; 202. Anti-corrosion coating. Detailed Implementation
[0023] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0024] Example 1
[0025] Please see Figures 1 to 4 As shown, this utility model provides a cylinder tube structure for a diesel engine with a cooling function, including an inner cylinder liner 1. The inner cylinder liner 1 includes a guide groove 103, a heat dissipation groove 104, an annular belt 105, and a sealing water ring 107. The guide groove 103 and the heat dissipation groove 104 are interconnected. The diameter of the heat dissipation groove 104 is slightly shorter than that of the guide groove 103. It also includes:
[0026] The outer cylinder liner 2 is movably connected to the outside of the guide groove 103 and the heat dissipation groove 104. The outer cylinder liner 2 has corrugated arc grooves 201 on its outside. There are multiple layers of corrugated arc grooves 201 and they are evenly distributed on the outside of the outer cylinder liner 2. The corrugated arc grooves 201 are wavy in shape and connected to each other end to end. The outer cylinder liner 2 is tightly fitted to the outside of the guide groove 103.
[0027] Specifically, during installation, two sealing water rings 107 are installed on the outside of the mounting groove 106. At this time, the sealing petals 108 on the outside of the sealing water rings 107 contact the mounting groove 106 and deform and fill it under the action of elasticity, thereby sealing the mounting groove 106. Then, during installation, the sealing petals 108 are tightly contacted with the inner wall of the cylinder to complete the installation seal. The top flange 101 and the heat dissipation ring 102 are respectively engaged with the cylinder, thus completing the installation of the device.
[0028] Example 2
[0029] Please see Figures 1 to 4As shown in Embodiment 1, an outer flange 101 is fixedly connected to the inner cylinder liner 1. A heat dissipation ring 102 is fixedly connected between the flange 101 and the guide groove 103. The diameter of the flange 101 is larger than that of the heat dissipation ring 102. The diameter of the heat dissipation ring 102 is equal to that of the outer cylinder liner 2. A heat dissipation groove 104 is opened in the middle of the inner cylinder liner 1. There are multiple sets of heat dissipation grooves 104, which are evenly distributed in the middle of the inner cylinder liner 1. A guide groove 103 is opened at the edge of the heat dissipation groove 104. There are two sets of guide grooves 103, which are symmetrically distributed outside the heat dissipation groove 104. There are multiple sets of guide grooves 103, which are circumferentially distributed outside the heat dissipation groove 104. A circular ring 105 is fixedly connected to the bottom of the inner cylinder liner 1. An installation groove 106 is opened on the outside of the circular ring 105. A sealing water ring 107 is movably connected to the outside of the installation groove 106. A sealing flap 108 is fixedly connected to the outside of the sealing water ring 107.
[0030] By making the above settings, during the operation of the device, the coolant flows and soaks the inner cylinder liner 1 and the outer cylinder liner 2. After being wetted by the guide channel 103, the coolant enters the heat dissipation tank 104. The heat dissipation tank 104 increases the contact area between the inner cylinder liner 1 and the coolant, thereby increasing the heat exchange rate. Then it flows out from the guide channel 103 on the opposite side. In this process, the coolant between the inner cylinder liner 1 and the outer cylinder liner 2 acts as a heat channel, transferring some of the heat through flow. The other part is transferred to the outside of the outer cylinder liner 2 through the coolant and the heat dissipation ring 102, thus completing part of the heat transfer.
[0031] Example 3
[0032] Please see Figures 1 to 4 As shown in Example 2, there are two sets of mounting grooves 106 symmetrically distributed outside the annular belt 105, and multiple sets of sealing flaps 108 distributed circumferentially outside the sealing water ring 107. The sealing flaps 108 are in contact with the inner wall of the mounting groove 106. The sealing flaps 108 are relatively soft and easily deformable. The guide groove 103 is coated with an anti-wear coating 109. The anti-wear coating 109 increases the friction between the outer cylinder liner 2 and the guide groove 103. The corrugated arc groove 201 and the heat dissipation groove 104 are both coated with an anti-corrosion coating 202.
[0033] By making the above settings, when the coolant flows through the outside of the outer cylinder liner 2, the coolant flows into the inside of the corrugated arc groove 201. The flow rate is accelerated by the narrow tube effect of the corrugated arc groove 201, which speeds up the flow of the coolant through the outer cylinder liner 2, increases the heat exchange efficiency between the coolant and the outer cylinder liner 2, avoids coolant stagnation leading to heat backflow, and ensures the normal operation of the device's cooling rate. The anti-wear coating 109 is a metal-ceramic coating with good oil storage function, which can further reduce the wear of the cylinder liner. The anti-corrosion coating 202 is a nickel-phosphorus alloy plating. At the same time, the anti-corrosion coating 202 slows down the flow rate, increases the mechanical wear on the inner cylinder liner 1 and the outer cylinder liner 2, and improves the service life of the anti-cavitation device.
[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A cylinder manifold structure for a diesel engine with cooling function, comprising an inner cylinder liner (1), characterized in that, The inner cylinder liner (1) includes a guide groove (103), a heat dissipation groove (104), an annular belt (105), and a sealing water ring (107). The guide groove (103) and the heat dissipation groove (104) are interconnected. The diameter of the heat dissipation groove (104) is slightly shorter than that of the guide groove (103). It also includes: The outer cylinder liner (2) is movably connected to the outside of the guide groove (103) and the heat dissipation groove (104). The outer cylinder liner (2) has a corrugated arc groove (201) on its outside. The corrugated arc groove (201) has multiple layers and is evenly distributed on the outside of the outer cylinder liner (2). The corrugated arc groove (201) has a wave-shaped shape and is connected to each other end to end. The outer cylinder liner (2) is tightly fitted to the outside of the guide groove (103).
2. The cylinder pipe structure for a diesel engine with cooling function according to claim 1, characterized in that, The inner cylinder liner (1) is fixedly connected to a flange (101), and a heat dissipation ring (102) is fixedly connected between the flange (101) and the guide groove (103). The diameter of the flange (101) is larger than that of the heat dissipation ring (102), and the diameter of the heat dissipation ring (102) is equal to that of the outer cylinder liner (2).
3. The cylinder pipe structure for a diesel engine with cooling function according to claim 1, characterized in that, The heat dissipation groove (104) is formed in the middle of the inner cylinder liner (1). There are multiple sets of heat dissipation grooves (104) and they are evenly distributed in the middle of the inner cylinder liner (1). The guide groove (103) is formed at the edge of the heat dissipation groove (104). There are two sets of guide grooves (103) and they are symmetrically distributed outside the heat dissipation groove (104). There are multiple sets of guide grooves (103) and they are distributed in a circular pattern outside the heat dissipation groove (104).
4. A cylinder pipe structure for a diesel engine with cooling function according to claim 1, characterized in that, The annular belt (105) is fixedly connected to the bottom of the inner cylinder liner (1). An installation groove (106) is provided on the outside of the annular belt (105). The sealing water ring (107) is movably connected to the outside of the installation groove (106). A sealing flap (108) is fixedly connected to the outside of the sealing water ring (107).
5. A cylinder pipe structure for a diesel engine with cooling function according to claim 4, characterized in that, There are two sets of mounting grooves (106) symmetrically distributed outside the annular belt (105), and there are multiple sets of sealing flaps (108) circumferentially distributed outside the sealing water ring (107).
6. A cylinder manifold structure for a diesel engine with cooling function according to claim 4, characterized in that, The sealing flap (108) is in contact with the inner wall of the mounting groove (106), and the sealing flap (108) is relatively soft and easily deformable.
7. A cylinder pipe structure for a diesel engine with cooling function according to claim 1, characterized in that, The guide groove (103) is coated with an anti-wear coating (109) to increase the friction between the outer cylinder liner (2) and the guide groove (103).
8. A cylinder manifold structure for a diesel engine with cooling function according to claim 1, characterized in that, Both the corrugated arc groove (201) and the heat dissipation groove (104) are coated with an anti-corrosion coating (202).