Observation structure for condensation water in a marine engine intake chamber
Patent Information
- Application Number
- CN202522238642.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-10-22
AI Technical Summary
在这一降温过程中，增压空气中的气态水通过冷凝作用形成液态水，尤其是船用发动机，在江面或海洋环境中运行，面临更高的环境湿度，极易形成冷凝水，目前无法有效避免冷凝水的形成
[0018]本实用新型的船用发动机进气腔冷凝水的观察结构包括透明观察管，透明观察管与进气腔相连通。由于发动机在船舱内安装后，发动机不会完全处于水平位置，而是会随整个船体向尾部倾斜，即发动机会向飞轮端倾斜，因此，将透明观察管安装在飞轮端且靠近进气腔的底部，利于进气腔有冷凝水的情况下，最早流入透明观察管，能及时发现进气腔内冷凝水的情况。
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Figure CN224885683U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine manufacturing technology, specifically to an observation structure for condensate in the intake chamber of a marine engine. Background Technology
[0002] With the increase in power output per liter, existing engines all employ turbocharging technology. The turbocharger compresses air, increasing the oxygen content entering the engine cylinders. However, this turbocharged air also experiences a rise in temperature. To address the issue of high turbocharged air temperature, engines use intercoolers to cool the air. During this cooling process, gaseous water in the turbocharged air condenses into liquid water. This is especially problematic for marine engines operating in river or ocean environments with higher humidity, making them highly susceptible to condensation. Currently, there is no effective way to completely prevent condensation formation.
[0003] In existing technologies, to address the issue of engine condensate, a drain hole is typically installed in the engine intake chamber to release condensate. The diameter of this drain hole should not be too large to avoid leakage of pressurized air, which could affect engine performance. However, if the drain hole is too small, it is often blocked by foreign objects that are difficult to detect. Over time, this condensate accumulates in the engine intake chamber. If there is excessive condensate, it can enter the cylinder through the intake manifold, causing serious engine malfunctions such as cylinder head injury during the compression process.
[0004] This proposal provides a simple device that can observe whether there is condensation in the engine intake chamber, prompting the user to clean the condensation in time, thereby protecting the engine. Utility Model Content
[0005] In view of the above-mentioned defects in the prior art, the technical problem to be solved by this utility model is to provide an observation structure for condensate in the intake chamber of a marine engine, which can observe whether there is condensate in the engine intake chamber, so that users can clean the condensate in time, thereby protecting the engine and avoiding engine failure due to condensate accumulation in the intake chamber.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0007] An observation structure for condensate in the intake chamber of a marine engine is installed on the engine. The engine has an intake chamber, and one end of the engine with a flywheel is called the flywheel end. The observation structure for condensate in the intake chamber includes a transparent observation tube. The transparent observation tube and a drain pipe, which are respectively connected to the intake chamber, are fixed on the engine. The transparent observation tube has a free end and a connecting end connected to the intake chamber. The connecting end is installed on the flywheel end and near the bottom of the intake chamber. The free end is positioned higher than the connecting end. The free end has a first hole communicating with the atmosphere, and the connecting end has a second hole communicating with the intake chamber. The second hole is larger than the first hole.
[0008] Preferably, the first hole is a round hole, the second hole is a round hole, the diameter of the first hole is 0.5mm to 1mm, and the diameter of the second hole is 8mm to 10mm.
[0009] Preferably, the transparent observation tube includes a lower horizontal tube section, a middle vertical tube section, an upper horizontal tube section, and an end vertical tube section. The two ends of the middle vertical tube section are respectively connected to the lower horizontal tube section and the upper horizontal tube section. The end vertical tube section is connected to the upper horizontal tube section. The connecting end is located at the lower horizontal tube section, and the free end is located at the end vertical tube section.
[0010] Preferably, the connection between the middle vertical pipe section and the lower horizontal pipe section and the connection between the upper horizontal pipe section are both rounded, and the connection between the upper horizontal pipe section and the end vertical pipe section is also rounded.
[0011] Preferably, the transparent observation tube is L-shaped and includes a first horizontal tube segment and a first vertical tube segment that are connected to each other. The free end of the first vertical tube segment gradually tapers and the first hole is provided at the top.
[0012] Preferably, the transparent observation tube includes an observation tube section and a pressurized air anti-leakage tube section. The diameter of the pressurized air anti-leakage tube section is smaller than the diameter of the observation tube section. The connection between the pressurized air anti-leakage tube section and the observation tube section is close to the tail end of the observation tube section. The first hole is located at the top end of the pressurized air anti-leakage tube section.
[0013] Preferably, the observation tube is a horizontal circular tube, and the pressurized air anti-leakage tube is fixedly connected to the periphery of the observation tube.
[0014] Preferably, the pressurized air anti-leakage pipe is configured as a vertical circular pipe, or the pressurized air anti-leakage pipe is configured as a J-shaped pipe.
[0015] Preferably, the observation tube (305) is a horizontal circular tube, and the pressurized air anti-leakage tube (306) is fixedly installed at the tail end of the observation tube (305).
[0016] Preferably, the pressurized air anti-leakage pipe section (306) is configured as an L-shaped pipe.
[0017] The beneficial effects of this utility model after adopting the above technical solution are:
[0018] This utility model discloses a structure for observing condensate in the intake chamber of a marine engine, which includes a transparent observation tube connected to the intake chamber. Since the engine, after installation in the hull, is not perfectly horizontal but tilts towards the stern along with the hull, specifically towards the flywheel end, installing the transparent observation tube at the flywheel end and near the bottom of the intake chamber allows condensate to flow into it first, enabling timely detection of any condensate buildup within the intake chamber.
[0019] The transparent observation tube has a free end and a connecting end that connects to the intake chamber. The connecting end is installed on the flywheel end near the bottom of the intake chamber, while the free end is positioned higher than the connecting end. The free end has a first hole communicating with the atmosphere, and the connecting end has a second hole communicating with the intake chamber, which is larger than the first hole. The purpose of the first hole is to allow condensate in the intake chamber to flow into the transparent tube. The diameter of the hole should not be too large, typically between 0.5mm and 1mm. Because the first hole is relatively small, less pressurized air flows out through it, thus not affecting the actual intake volume of the engine. Simultaneously, the smaller volume and lower velocity of air flowing through the transparent tube prevent small foreign objects from being carried into the first hole and blocking it. The second hole has a relatively larger diameter, typically between 8mm and 10mm, to prevent foreign objects in the intake chamber from clogging it. It also facilitates observation of any foreign objects inside the transparent observation tube, allowing for timely cleaning.
[0020] In summary, the observation structure for condensate in the intake chamber of a marine engine of this utility model can observe whether there is condensate in the engine intake chamber, making it convenient for users to clean the condensate in a timely manner, thereby protecting the engine and preventing engine failure due to condensate accumulation in the intake chamber. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the marine engine of this utility model after installation inside the ship's cabin.
[0022] Figure 2 This is a schematic diagram of the observation structure for the condensate in the intake chamber of a marine engine, as described in Embodiment 1 of this utility model, installed on the engine.
[0023] Figure 3 This is a cross-sectional view of the observation structure for the condensate in the intake chamber of a marine engine, as described in Embodiment 1 of this utility model, mounted on the engine.
[0024] Figure 4 This is a cross-sectional structural diagram of the drainage pipe of this utility model installed at the air intake cavity of a marine engine.
[0025] Figure 5 This is a cross-sectional view of the observation structure for the condensate in the intake chamber of a marine engine, as described in Embodiment 2 of this utility model, mounted on the engine.
[0026] Figure 6 This is a cross-sectional view of the observation structure for the condensate in the intake chamber of a marine engine, as described in Embodiment 3 of this utility model, mounted on the engine.
[0027] Figure 7 This is a cross-sectional view of the observation structure for the condensate in the intake chamber of a marine engine, as described in Embodiment 4 of this utility model, mounted on the engine.
[0028] Figure 8 This is a cross-sectional view of the observation structure for the condensate in the intake chamber of a marine engine, as described in Embodiment 5 of this utility model, mounted on the engine.
[0029] Figure 9 This is a cross-sectional view of the observation structure for the condensate in the intake chamber of a marine engine, as described in Embodiment Six of this utility model, mounted on the engine.
[0030] In the diagram: 1. Engine; 101. Intake chamber; 102. Intercooler rear air intake; 2. Flywheel; 3. Transparent observation tube; 31. First hole; 32. Second hole; 301. Lower horizontal pipe section; 302. Middle vertical pipe section; 303. Upper horizontal pipe section; 304. End vertical pipe section; 305. Observation tube section; 306. Pressurized air anti-leakage pipe section; 308. First horizontal pipe section; 309. First vertical pipe section; 4. Drain pipe. Detailed Implementation
[0031] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of this utility model, but it is not intended to limit the scope of protection of the appended claims of this utility model.
[0032] In the description of this utility model, it should be noted that the terms "front", "rear", "center", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0033] Furthermore, although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used in this document do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.
[0034] Example 1
[0035] like Figures 1 to 4 The observation structure for the condensate in the intake chamber of the marine engine shown is installed on the engine 1. The engine 1 has an intake chamber 101. One end of the engine 1 with a flywheel 2 is called the flywheel end. The flywheel end is provided with an intercooled air intake port 102. The observation structure for the condensate in the intake chamber of the marine engine includes a transparent observation tube 3. The engine 1 is fixed with a transparent observation tube 3 and a drain pipe 4 that are respectively connected to the intake chamber 101. The transparent observation tube 3 has a free end and a connecting end that is connected to the intake chamber 101. The connecting end is installed on the flywheel end and is close to the bottom of the intake chamber 101. The free end is higher than the connecting end. The free end is provided with a first hole 31 that is connected to the atmosphere. The connecting end is provided with a second hole 32 that is connected to the intake chamber 101. The second hole 32 is larger than the first hole 31.
[0036] Preferably, the first hole 31 is a round hole and the second hole 32 is a round hole. The diameter of the round hole 31 is 0.5mm to 1mm and the diameter of the round hole 32 is 8mm to 10mm.
[0037] like Figure 1 As shown, after the engine is installed in the cabin, it will not be in a completely horizontal position, but will tilt towards the stern along with the entire hull, that is, the engine will tilt towards the flywheel end. Therefore, the transparent observation tube 3 is installed at the flywheel end, located at the bottom of the air intake chamber 101 near the flywheel end. This allows condensate to flow into the transparent observation tube 3 first when there is condensate in the air intake chamber 101, so that the condensate situation in the air intake chamber 101 can be detected in time.
[0038] The observation structure for the condensate in the intake chamber of a marine engine allows for observation of the water level within the chamber. The connecting end of the transparent observation tube 3 is equipped with a second hole 32 that communicates with the intake chamber 101. The second hole 32 has a relatively large diameter, typically 8mm to 10mm, to prevent foreign objects in the intake chamber 101 from clogging it. Simultaneously, it facilitates observation of any foreign objects within the transparent observation tube 3, allowing for timely cleaning.
[0039] A valve is usually installed on the drain pipe 4. When drain pipe 4 does not need to drain, closing the valve can reduce the loss of boosted air. Before each engine start, check the intake chamber 101 for condensation through the transparent sight tube 3. If condensation is found, the valve on the drain pipe 4 should be opened to drain the water.
[0040] If drain pipe 4 is blocked by debris, or if the user connects a flexible hose to drain pipe 4 and the hose becomes blocked or bent, the condensate cannot drain. If the condensate enters the cylinder, it can cause engine cylinder scoring, cylinder liner cracking, and other problems. Therefore, if condensate is observed in the transparent observation tube 3 but not drained from drain pipe 4, it is necessary to blow away the impurities in drain pipe 4 to allow the condensate to drain smoothly.
[0041] The transparent observation tube 3 includes a lower horizontal tube section 301, a middle vertical tube section 302, an upper horizontal tube section 303, and an end vertical tube section 304. The two ends of the middle vertical tube section 302 are connected to the lower horizontal tube section 301 and the upper horizontal tube section 303, respectively. The end vertical tube section 304 is connected to the upper horizontal tube section 303. The connecting end is located at the lower horizontal tube section 301, and the free end is located at the end vertical tube section 304.
[0042] Since the lower horizontal pipe section 301 is horizontal, any condensate in the air intake chamber will flow into this area, allowing for observation of the water level. The middle vertical pipe section 302 is vertically upward and has a certain length, forming a 90° angle with the lower horizontal pipe section 301. If a small foreign object flows to this point with the airflow, its kinetic energy is reduced by colliding with the wall, and the airflow direction is altered, preventing it from continuing to flow upward. This means that the small foreign object cannot reach the first hole 31 of the end vertical pipe section 304, preventing the first hole 31 from becoming blocked.
[0043] The first hole 31 is open to the atmosphere, allowing condensate in the intake chamber to flow into the transparent tube. The diameter of the hole should not be too large, and is set to 0.5mm to 1mm. Due to the small size of the first hole 31, less pressurized air flows out through it, thus not affecting the actual intake volume of the engine. At the same time, the small volume and low velocity of air flowing through the transparent tube prevent small foreign objects from being brought into the first hole 31 and thus blocking the opening.
[0044] The connection points between the middle vertical pipe section 302 and the lower horizontal pipe section 301, and between the upper horizontal pipe section 303 and the end vertical pipe section 304, are all rounded. These rounded transitions serve two purposes: firstly, they prevent stress concentration in the transparent observation tube 3, enhancing structural strength; secondly, they prevent the accumulation of small foreign objects at the corners. In this embodiment, the transparent observation tube 3 can be integrally molded, ensuring high reliability and making it easy to observe whether condensation is present.
[0045] The observation structure for the condensate in the intake chamber of the marine engine in this embodiment utilizes the principle of airflow to avoid blockages, ensuring structural safety and reliability.
[0046] Example 2
[0047] The difference between Example 2 and Example 1 lies in the structure of the transparent observation tube 3:
[0048] like Figure 5 As shown, the transparent observation tube 3 is L-shaped, including a first horizontal tube section 308 and a first vertical tube section 309 connected to each other. The free end of the first vertical tube section 309 gradually tapers and a first hole 31 is provided at the top. The transparent observation tube 3 of this embodiment can be integrally molded, has high reliability, and has a large area for observing condensate. Once there is condensate in the transparent observation tube 3, it can be easily observed.
[0049] Example 3
[0050] The difference between Example 3 and Example 1 lies in the structure of the transparent observation tube 3:
[0051] like Figure 6 As shown, the transparent observation tube 3 includes an observation tube section 305 and a pressurized air anti-leakage tube section 306. The diameter of the pressurized air anti-leakage tube section 306 is smaller than that of the observation tube section 305. The connection between the pressurized air anti-leakage tube section 306 and the observation tube section 305 is close to the tail end of the observation tube section 305. The first hole 31 is located at the top end of the pressurized air anti-leakage tube section 306.
[0052] The observation tube 305 is a horizontal circular tube, and the pressurized air anti-leakage tube 306 is fixedly connected to the periphery of the observation tube 305. The pressurized air anti-leakage tube 306 is configured as a vertical circular tube. In this embodiment, the structure of the transparent observation tube 3 is relatively simple. The pressurized air anti-leakage tube 306 can be fixed to the periphery of the observation tube 305 by means of heat fusion, adhesive bonding, threaded connection, etc. The pressurized air anti-leakage tube 306 is located on the circumferential surface of the observation tube 305.
[0053] Example 4
[0054] The difference between Example 4 and Example 3 lies in the structure and fixing position of the pressurized air anti-leakage pipe 306:
[0055] like Figure 8 As shown, the booster air anti-leakage pipe section 306 is configured as a J-shaped pipe. If there is condensate in the intake chamber, it will flow into the horizontal observation pipe section 305. The condensate in the observation pipe section 305 will enter the lower end of the J-shaped pipe. The presence of a certain amount of water at the lower end of the J-shaped pipe can completely prevent the booster air from being lost through the J-shaped pipe.
[0056] Example 5
[0057] The difference between Example 5 and Example 3 lies in the structure and fixing position of the pressurized air anti-leakage pipe 306:
[0058] like Figure 7 As shown, the observation tube 305 is a horizontal circular tube, and the pressurized air anti-leakage tube 306 is fixedly installed at the tail end of the observation tube 305. The pressurized air anti-leakage tube 306 is configured as an L-shaped tube. The L-shaped tube is fixed to the tail end face of the horizontal circular tube by means of heat fusion, adhesive bonding, threaded connection, etc.
[0059] Example 6
[0060] The only difference between Embodiment Six and Embodiment Five is the structure and fixing position of the pressurized air anti-leakage pipe 306:
[0061] like Figure 9 As shown, the observation tube 305 is a horizontal circular tube, and the pressurized air anti-leakage tube 306 is fixedly installed at the tail end of the observation tube 305. The pressurized air anti-leakage tube 306 is configured as an irregularly shaped thin bend. The irregularly shaped thin bend increases the flow resistance of the gas, which can reduce the pressurized air lost through the pressurized air anti-leakage tube 306, thereby not affecting the actual intake volume of the engine.
[0062] This invention uses a transparent observation tube 3 to observe the liquid level to determine the water level in the air intake chamber, which is safer and more reliable than using a sensor to monitor the liquid level. It also has a simpler structure and lower cost.
[0063] The second hole 32, connecting the transparent observation tube 3 to the air intake chamber 101, is large-diameter, preventing foreign objects from blocking the connection and causing condensate to fail to flow into the transparent observation tube 3, thus preventing observation failure. The free end of the transparent observation tube 3 has a first hole 31 connected to the atmosphere. This first hole 31 is a very small hole, communicating with atmospheric pressure, facilitating liquid flow and solving the problem of inaccurate liquid level observation due to pressure difference. Simultaneously, the first hole 31 is a tiny hole, resulting in minimal leakage of boosted air and not affecting the engine's air intake.
[0064] This utility model is not limited to the above embodiments. All improvements made based on the concept, principle, structure and method of this utility model are within the protection scope of this utility model.
Claims
1. An observation structure for condensate in the intake chamber of a marine engine, mounted on an engine (1), wherein the engine (1) is provided with an intake chamber (101), and one end of the engine (1) on which a flywheel (2) is mounted is the flywheel end, characterized in that: The observation structure for the condensate in the intake chamber of the marine engine includes a transparent observation tube (3). The engine (1) is fixed with the transparent observation tube (3) and the drain pipe (4) respectively connected to the intake chamber (101). The transparent observation tube (3) has a free end and a connecting end connected to the intake chamber (101). The connecting end is installed on the flywheel end and close to the bottom of the intake chamber (101). The free end is higher than the connecting end. The free end is provided with a first hole (31) connected to the atmosphere. The connecting end is provided with a second hole (32) connected to the intake chamber (101). The second hole (32) is larger than the first hole (31).
2. The observation structure for condensate in the intake chamber of a marine engine as described in claim 1, characterized in that: The first hole (31) is a round hole, and the second hole (32) is a round hole. The diameter of the round hole of the first hole (31) is 0.5mm to 1mm, and the diameter of the round hole of the second hole (32) is 8mm to 10mm.
3. The observation structure for condensate in the intake chamber of a marine engine as described in claim 2, characterized in that: The transparent observation tube (3) includes a lower horizontal tube section (301), a middle vertical tube section (302), an upper horizontal tube section (303), and an end vertical tube section (304). The two ends of the middle vertical tube section (302) are respectively connected to the lower horizontal tube section (301) and the upper horizontal tube section (303). The end vertical tube section (304) is connected to the upper horizontal tube section (303). The connecting end is located at the lower horizontal tube section (301), and the free end is located at the end vertical tube section (304).
4. The observation structure for condensate in the intake chamber of a marine engine as described in claim 3, characterized in that: The connection between the middle vertical pipe section (302) and the lower horizontal pipe section (301) and the connection between the upper horizontal pipe section (303) are both rounded, and the connection between the upper horizontal pipe section (303) and the end vertical pipe section (304) is also rounded.
5. The observation structure for condensate in the intake chamber of a marine engine as described in claim 2, characterized in that: The transparent observation tube (3) is L-shaped and includes a first horizontal tube section (308) and a first vertical tube section (309) that are connected to each other. The free end of the first vertical tube section (309) gradually narrows and the first hole (31) is provided at the top.
6. The observation structure for condensate in the intake chamber of a marine engine as described in claim 2, characterized in that: The transparent observation tube (3) includes an observation tube section (305) and a pressurized air anti-leakage tube section (306). The diameter of the pressurized air anti-leakage tube section (306) is smaller than the diameter of the observation tube section (305). The connection between the pressurized air anti-leakage tube section (306) and the observation tube section (305) is close to the tail end of the observation tube section (305). The first hole (31) is located at the top of the pressurized air anti-leakage tube section (306).
7. The observation structure for condensate in the intake chamber of a marine engine as described in claim 6, characterized in that: The observation tube (305) is a horizontal circular tube, and the pressurized air anti-leakage tube (306) is fixedly connected to the periphery of the observation tube (305).
8. The observation structure for condensate in the intake chamber of a marine engine as described in claim 7, characterized in that: The pressurized air anti-leakage pipe section (306) is configured as a vertical circular pipe, or the pressurized air anti-leakage pipe section (306) is configured as a J-shaped pipe.
9. The observation structure for condensate in the intake chamber of a marine engine as described in claim 6, characterized in that: The observation tube (305) is a horizontal circular tube, and the pressurized air anti-leakage tube (306) is fixedly installed at the tail end of the observation tube (305).
10. The observation structure for condensate in the intake chamber of a marine engine as described in claim 9, characterized in that: The pressurized air anti-leakage pipe section (306) is configured as an L-shaped pipe.