Waste heat recovery device for inland ship engine

Abstract

The utility model discloses a waste heat recovery device for an inland ship engine, which belongs to the technical field of engines, solves the technical problem that the temperature of an existing ship smoke exhaust pipeline is too high, comprises a smoke exhaust pipeline, and is characterized by further comprising a water jacket which wraps the smoke exhaust pipeline in the length direction of the smoke exhaust pipeline. A water inlet pipe connected with a living water tank is arranged below the water jacket, one end of the water inlet pipe is fixedly connected with the water jacket, a first switch valve is arranged at the other end of the water inlet pipe, a water outlet pipe is arranged at the top of the water jacket, and a water outlet mechanism is arranged on the water outlet pipe. The water outlet mechanism comprises a domestic water pipeline leading to the living cabin and a water heater pipeline. The ship smoke exhaust pipeline can be cooled, the cabin environment temperature can be reduced, environmental protection and no peculiar smell are achieved, water obtained after heat exchange can be used in domestic water, engine waste heat recovery is achieved, and heat waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, and more specifically, to a waste heat recovery device for an inland river ship engine. Background Art

[0002] At present, the main power source of inland ships is diesel engines. Marine diesel engines have large displacement and horsepower, and consume a lot of fuel when working. A large part of the heat energy is directly discharged in the form of exhaust gas from the engine room through the ship's exhaust pipe when the engine is working to the upper deck. The ship's exhaust pipe is high, curved and long, and is mainly wrapped with insulation materials such as insulation sleeves. When the ship's engine is working, the exhaust gas temperature is as high as several hundred degrees. The ship's exhaust pipe is very hot, and it is easy to cause burns when touching the exhaust pipe. At the same time, the exhaust pipe will generate a lot of heat radiation, resulting in a high cabin environment temperature, which is not good for the physical and mental health of the crew; the cost of wrapping with insulation sleeves increases; the insulation sleeve emits a peculiar smell when heated, and the material cannot be degraded after a long period of use; in addition, most of the heat of the exhaust gas is directly discharged into the air, resulting in heat waste. Utility Model Content

[0003] The technical problem to be solved by the utility model is aimed at the above-mentioned deficiencies in the prior art. The purpose of the utility model is to provide an inland ship engine waste heat recovery device which can cool the smoke exhaust pipe and recycle heat.

[0004] The technical solution of the utility model is: an inland river ship engine waste heat recovery device, including a smoke exhaust pipe, characterized in that it also includes a water jacket, the water jacket wraps the smoke exhaust pipe along the length direction of the smoke exhaust pipe, the two ends of the water jacket are sealed with the smoke exhaust pipe, a water inlet pipe connected to a domestic water tank is provided below the water jacket, one end of the water inlet pipe is fixedly connected to the water jacket, the other end of the water inlet pipe is provided with a first switch valve, a water outlet pipe is provided on the top of the water jacket, and the water outlet pipe is provided with a water outlet mechanism including a domestic water pipe leading to a living cabin and a water heater pipe.

[0005] As a further improvement, a second switch valve is provided at one end of the domestic water pipeline located in the living compartment.

[0006] Furthermore, a water heater pipe is located at one end of the living compartment and is connected to the water heater, and is provided with a third switch valve.

[0007] Furthermore, a drain valve is provided in the middle of the bottom of the water jacket.

[0008] Furthermore, both ends of the water jacket are tightly connected to the outer wall of the smoke exhaust pipe by welding.

[0009] Furthermore, the outer wall of the water outlet pipe, the outer wall of the water heater pipe, and the outer wall of the domestic water pipe are provided with a heat preservation mechanism.

[0010] Furthermore, the heat preservation mechanism is a heat preservation layer made of heat insulating material.

[0011] Furthermore, an observation window is provided at the bottom of the water jacket, and the observation window is provided with a transparent glass which is sealed and connected.

[0012] Furthermore, the water outlet pipe is provided with a flow meter.

[0013] Beneficial Effects

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] 1. The utility model welds a water jacket on the outside of the exhaust pipe, utilizes engine cooling water to pass through the water jacket, and the cooling water in the water jacket flows in and out from both sides of the exhaust pipe, utilizing the heat exchange principle, thereby achieving the purpose of cooling the ship's exhaust pipe, and has the advantages of low cost, strong practicality, strong adaptability, and easy installation and popularization.

[0016] 2. The utility model can prevent scalding and reduce the ambient temperature of the engine room through the external water jacket, is environmentally friendly and odorless, is beneficial to the physical and mental health of the crew and improves the stability and reliability of the engine.

[0017] 3. The utility model discharges the water after heat exchange in the water jacket to living cabins such as the ship's toilet, which can be used as hot water for daily use and a heat source for water heaters in winter, thereby realizing engine waste heat recovery and avoiding heat waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the utility model;

[0019] Figure 2 It is a side view of the utility model.

[0020] Among them: 1-smoke exhaust pipe, 2-water jacket, 3-drain valve, 4-water inlet pipe, 5-first switch valve, 6-water jacket outlet, 7-second switch valve, 8-third switch valve, 9-domestic water pipeline, 10-water heater pipeline, 11-observation window, 12-flow meter. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0022] See also Figure 1-Figure 2A waste heat recovery device for an inland river ship engine comprises a smoke exhaust pipe 1 and a water jacket 2. The water jacket 2 seals and connects the smoke exhaust pipe 1 along the length direction of the smoke exhaust pipe 1. A water inlet pipe 4 connected to a domestic water tank is arranged below the water jacket 2. One end of the water inlet pipe 4 is fixedly connected to the water jacket 2. A first switch valve 5 is arranged at the other end of the water inlet pipe 4. A water outlet pipe 6 is arranged on the top of the water jacket 2. The water outlet pipe 6 is provided with a water outlet mechanism. The water outlet mechanism comprises a domestic water pipe 9 and a water heater pipe 10 leading to a living cabin.

[0023] A second switch valve 7 is provided at one end of the domestic water pipe 9 located in the living compartment.

[0024] The water heater pipe 10 is located at one end of the living compartment and is connected to the water heater, and is provided with a third switch valve 8.

[0025] Preferably, the water inlet and outlet speeds of the water jacket 2 are adjusted by adjusting the valve openings of the first switch valve 5, the second switch valve 7, and the third switch valve 8 to avoid insufficient water in the water jacket 2 and failure to cool the water; and to avoid excessive water pressure in the water jacket 2.

[0026] A drain valve 3 is provided in the middle of the bottom of the water jacket 2. When the equipment is cleaned or repaired, the drain valve 3 is opened to quickly drain the water in the water jacket 2.

[0027] Both ends of the water jacket 2 are tightly connected to the outer wall of the smoke exhaust duct 1 by welding. Preferably, the water jacket 2 completely wraps the outer wall of the straight pipe of the smoke exhaust duct 1, and the edge of the water jacket 2 is tightly connected to the outer wall of the smoke exhaust duct 1 by welding, thereby ensuring the air tightness of the smoke exhaust duct 1 and the airtightness of the water jacket 2, and preventing water in the water jacket 2 from seeping out of the water jacket 2 or seeping into the smoke exhaust duct 1 to cause malfunctions.

[0028] The outer wall of the water outlet pipe 6, the outer wall of the water heater pipe 10, and the outer wall of the domestic water pipe 9 are all provided with a heat preservation mechanism. The heat preservation mechanism is a heat-insulating layer made of a heat-insulating material, and preferably, the heat-insulating material is heat-insulating cotton.

[0029] An observation window 11 is provided at the bottom of the water jacket 2. The observation window 11 is provided with a sealed transparent glass, which is convenient for checking whether the remaining water in the water jacket 2 is drained during cleaning.

[0030] Preferably, the water outlet pipe 6 is provided with a flow meter 12, which is convenient for checking the flow of water in the water jacket 2, and the switch valve can be adjusted according to the flow data.

[0031] Working principle:

[0032] The ship exhaust pipe 1 and the water jacket 2 are connected together by welding, and the water jacket 2 wraps the exhaust pipe 1 along the length direction of the exhaust pipe 1, and ensures the air tightness of the exhaust pipe 1 and the airtightness of the water jacket 2. When the work starts and the temperature of the exhaust pipe 1 starts to rise, the first switch valve 5 is opened to start water injection, and the second switch valve 6 or the third switch valve 8 is opened, and the opening of the first switch valve 5, the second switch valve 7, and the third switch valve 8 is adjusted to control the flow of water in the water jacket 2. Through the principle of heat exchange, the temperature of the exhaust pipe 1 is lowered, which can prevent the crew from accidentally touching it and causing burns, and at the same time reduce the ambient temperature in the cabin. At the same time, the hot water after heat exchange is used for domestic water or water heaters, so as to realize the recovery and reuse of engine waste heat and avoid heat waste.

[0033] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. An inland river ship engine waste heat recovery device, comprising a smoke exhaust pipe (1), characterized in that: The utility model also comprises a water jacket (2), wherein the water jacket (2) wraps the smoke exhaust pipe (1) along the length direction of the smoke exhaust pipe (1), and the two ends of the water jacket (2) are sealedly connected to the smoke exhaust pipe (1). A water inlet pipe (4) connected to a domestic water tank is provided below the water jacket (2), one end of the water inlet pipe (4) is fixedly connected to the water jacket (2), and the other end of the water inlet pipe (4) is provided with a first switch valve (5). A water outlet pipe (6) is provided at the top of the water jacket (2), and the water outlet pipe (6) is provided with a water outlet mechanism, and the water outlet mechanism comprises a domestic water pipe (9) leading to the living cabin and a water heater pipe (10).

2. The inland river ship engine waste heat recovery device according to claim 1, characterized in that: The domestic water pipe (9) is provided with a second switch valve (7) at one end of the living compartment.

3. The inland river ship engine waste heat recovery device according to claim 1, characterized in that: The water heater pipe (10) is located at one end of the living cabin and is connected to the water heater, and is provided with a third switch valve (8).

4. The inland river ship engine waste heat recovery device according to claim 1, characterized in that: A drain valve (3) is provided in the middle of the bottom of the water jacket (2).

5. The inland river ship engine waste heat recovery device according to claim 1, characterized in that: Both ends of the water jacket (2) are tightly connected to the outer wall of the smoke exhaust pipe (1) by welding.

6. The inland river ship engine waste heat recovery device according to claim 1, characterized in that: The outer wall of the water outlet pipe (6), the outer wall of the water heater pipe (10), and the outer wall of the domestic water pipe (9) are provided with a heat preservation mechanism.

7. The inland river ship engine waste heat recovery device according to claim 6, characterized in that: The heat preservation mechanism is a heat preservation layer made of heat insulation material.

8. The inland river ship engine waste heat recovery device according to claim 1, characterized in that: An observation window (11) is provided at the bottom of the water jacket (2), and the observation window (11) is provided with a sealed transparent glass.

9. The inland river ship engine waste heat recovery device according to claim 1, characterized in that: The water outlet pipe (6) is provided with a flow meter (12).

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