Automatic water seal structure of ship

Abstract

The invention relates to the technical field of ship equipment, in particular to a ship automatic water seal structure which comprises an exhaust pipe, an inclined branch pipe, a discharge pipe and a water tank, the exhaust pipe is vertically arranged and communicated with the atmosphere through a top end opening, one end of the inclined branch pipe is obliquely communicated with the exhaust pipe, the other end of the inclined branch pipe is connected to an exhaust outlet of the ship equipment, and a U-shaped bent section is arranged on the discharge pipe. The upstream pipe section of the U-shaped bent section is communicated with the bottom end of the exhaust pipe, the downstream pipe section of the U-shaped bent section is bent downwards to form an overflow point, the water tank is communicated with the upstream pipe section of the U-shaped bent section and connected with a water source through a water supply pipe, the inner bottom wall of the water tank is as high as the lowest position of the U-shaped bent section, and the water tank is provided with a floating ball valve at an outlet of the water supply pipe. When the liquid level in the water tank is equal to the overflow point in height, the floating ball valve completely blocks the water supply pipe. According to the automatic water seal structure of the ship, through an automatic water replenishing mode, the situation that high-temperature waste gas flows backwards into the ship to cause personnel injury or equipment damage due to water seal failure is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of ship equipment, and in particular to an automatic water seal structure for a ship. Background Art

[0002] The exhaust pipes of ship diesel engines, boilers and incinerators usually end outdoors. Due to the influence of temperature difference, rain and bad sea conditions, condensation will inevitably occur in the exhaust pipes, and rain and seawater from the outside will also penetrate into the exhaust pipes, and then condensation, rain and seawater will flow into the interior of the ship equipment, causing damage to the equipment. Therefore, it is necessary to set up discharge facilities near the exhaust port of the equipment inside the ship to avoid water damage to the ship equipment.

[0003] Currently, see Figure 1 The commonly used discharge measure in the industry is to connect an oblique branch pipe 2 to the vertical exhaust pipe 1, and then connect the oblique branch pipe 2 to the exhaust outlet of the ship equipment, while the bottom of the exhaust pipe 1 is connected to a discharge pipe 3 with a U-shaped bend, and the upstream pipe section of the U-shaped bend on the discharge pipe 3 is also connected to a water supply pipe 4, so that water is injected into the U-shaped bend of the discharge pipe 3 through the water supply pipe 4 to ensure that an effective water seal is formed in the discharge pipe 3 to prevent exhaust gas from being discharged from the discharge pipe 3 to the interior of the ship.

[0004] However, since the exhaust gas in the exhaust pipe is several hundred degrees high, the direct contact between the exhaust gas and the water in the U-bend of the discharge pipe will cause the water in the U-bend to heat and volatilize. If water is not added to the discharge pipe in time, the water seal may fail and the high-temperature exhaust gas may be discharged into the ship. In addition, the discharge scheme currently used in the industry cannot visually see the liquid level in the U-bend of the discharge pipe. It can only rely on the duty officer to manually inject water through the water supply pipe regularly to ensure the water seal effect, which poses a major safety hazard. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a ship automatic water seal structure capable of avoiding water seal failure by automatically injecting water.

[0006] The present invention adopts the following technical solution:

[0007] The present invention provides an automatic water seal structure for a ship, comprising an exhaust pipe, an oblique branch pipe, a discharge pipe and a water tank. The exhaust pipe is vertically arranged and communicated with the atmosphere through a top opening. One end of the oblique branch pipe is obliquely communicated with the exhaust pipe and the other end is connected to an exhaust outlet of ship equipment. A U-shaped bend section is provided on the discharge pipe, and an upstream pipe section of the U-shaped bend section is communicated with a bottom end of the exhaust pipe. A downstream pipe section of the U-shaped bend section is bent downward to form an overflow point. The water tank is communicated with the upstream pipe section of the U-shaped bend section and is connected to a water source through a water supply pipe. The inner bottom wall of the water tank is at the same height as the lowest position of the U-shaped bend section. A float valve is provided at the outlet of the water supply pipe of the water tank. When the liquid level in the water tank is at the same height as the overflow point, the float valve completely blocks the water supply pipe.

[0008] Preferably, the downstream pipe section of the U-shaped bend section on the discharge pipe is connected to a collection cabinet, and the collection cabinet is used to store condensed water, rainwater and seawater flowing out of the exhaust pipe.

[0009] Preferably, the water tank is connected to a fresh water pressure cabinet through a water supply pipe, and the fresh water pressure cabinet stores fresh water used as a water source.

[0010] Preferably, the water tank is connected to the upstream pipe section of the U-shaped bend section through a connecting pipe, and maintenance valves are installed on both the connecting pipe and the downstream pipe section of the U-shaped bend section.

[0011] Preferably, a liquid level gauge is provided on the water tank.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] When the liquid level in the water tank is equal to the overflow point, the float valve completely blocks the water supply pipe, and the inner bottom wall of the water tank is equal to the lowest position of the U-shaped bend section, the ship automatic water seal structure of the present invention can control the liquid level in the U-shaped bend section on the discharge pipe through the float valve. When the water level in the U-shaped bend section decreases, according to the principle of the communicating vessel, the liquid level in the water tank will also decrease accordingly. As the liquid level in the water tank decreases, the float on the float valve drops synchronously and opens the float valve, causing water source to inject water into the water tank through the water supply pipe. When the water level in the water tank rises and recovers to the same height as the overflow point, the float on the float valve rises and closes the float valve, and the water injection ends.

[0014] Obviously, the automatic water seal structure of the ship of the present invention can automatically fill water, and there is no need to manually fill water into the discharge pipe regularly and repeatedly, thereby improving work efficiency; at the same time, the automatic water seal structure of the ship of the present invention also improves the reliability of the system operation by automatically replenishing water, thereby avoiding the situation where the water seal fails and high-temperature exhaust gas flows back into the ship, causing personal injury or equipment damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of discharge facilities commonly used in the industry in the prior art.

[0016] Figure 2 It is an overall schematic diagram of the automatic water seal structure of a ship in an embodiment of the present invention.

[0017] The reference numerals are described as follows:

[0018] 1. Exhaust pipe 4. Water supply pipe

[0019] 2. Oblique branch pipe 5. Water tank

[0020] 3. Discharge pipe 6. Water supply pipe

[0021] 301, U-shaped bend section 7, float valve

[0022] 302, upstream pipe section 8, connecting pipe

[0023] 303, Downstream pipe section 9, Maintenance valve

[0024] 304, overflow point 10, liquid level gauge DETAILED DESCRIPTION

[0025] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions 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 limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0029] See also Figure 2The present embodiment provides a ship automatic water seal structure, including an exhaust pipe 1, an oblique branch pipe 2, a discharge pipe 3 and a water tank 5. The exhaust pipe 1 is vertically arranged and communicates with the atmosphere through a top opening. One end of the oblique branch pipe 2 is obliquely connected to the exhaust pipe 1, and the other end is connected to the exhaust outlet of the ship equipment. A U-shaped bend section 301 is provided on the discharge pipe 3, and an upstream pipe section 302 of the U-shaped bend section 301 is connected to the bottom end of the exhaust pipe 1. A downstream pipe section 303 of the U-shaped bend section 301 is bent downward to form an overflow point 304. The water tank 5 is connected to the upstream pipe section 302 of the U-shaped bend section 301 and is connected to a water source through a water supply pipe 6. The inner bottom wall of the water tank 5 is at the same height as the lowest position of the U-shaped bend section 301. A float valve 7 is provided at the outlet of the water supply pipe 6 of the water tank 5. When the liquid level in the water tank 5 is at the same height as the overflow point 304, the float valve 7 completely blocks the water supply pipe 6.

[0030] See also Figure 2 When the liquid level in the water tank 5 is equal to the overflow point 304, the float valve 7 completely blocks the water supply pipe 6, and the inner bottom wall of the water tank 5 is equal to the lowest level of the U-shaped bend 301, so that the ship automatic water seal structure of this embodiment can control the liquid level in the U-shaped bend 301 on the discharge pipe 3 through the float valve 7. When the water level in the U-shaped bend 301 decreases, according to the principle of the communicating vessel, the liquid level in the water tank 5 will also decrease accordingly. As the liquid level in the water tank 5 decreases, the float on the float valve 7 drops synchronously and opens the float valve 7, causing the water source to inject water into the water tank 5 through the water supply pipe 6. When the water level in the water tank 5 rises and recovers to the same height as the overflow point 304, the float on the float valve 7 rises and closes the float valve 7, and the water injection ends.

[0031] It should be noted that see Figure 2 The ship equipment connected to the inclined branch pipe 2 includes a diesel engine, a boiler and an incinerator, and under normal circumstances, the high-temperature exhaust gas discharged from the exhaust outlet of the ship equipment enters the inclined branch pipe 2 and is discharged into the atmosphere from the top opening of the exhaust pipe 1, while the condensed water, rainwater or seawater in the exhaust pipe 1 flows into the discharge pipe 3 from the bottom, and after the liquid level in the upstream pipe section 302 of the U-shaped bend section 301 of the discharge pipe 3 accumulates to be higher than the downstream pipe section 303, it overflows and is discharged from the overflow point 304; and when the condensed water, rainwater or seawater is not collected in the exhaust pipe 1 for a long time, the water tank 5 is automatically replenished with water to always keep the water seal in the U-shaped bend section 301 on the discharge pipe 3.

[0032] Preferably, see Figure 2 The downstream pipe section 303 of the U-shaped bend section 301 on the discharge pipe 3 is connected to a collection cabinet, which is used to store condensed water, rainwater and seawater flowing out of the exhaust pipe 1.

[0033] Preferably, see Figure 2 The water tank 5 is connected to the fresh water pressure cabinet through the water supply pipe 6, and the fresh water pressure cabinet stores fresh water used as a water source.

[0034] Preferably, see Figure 2 The water tank 5 is connected to the upstream pipe section 302 of the U-shaped bend section 301 through the connecting pipe 8, and the connecting pipe 8 and the downstream pipe section 303 of the U-shaped bend section 301 are both installed with maintenance valves 9. When it is necessary to maintain the automatic water seal structure of the ship of this embodiment, the maintenance valve 9 at the corresponding position can be closed to facilitate the inspection and maintenance work.

[0035] Preferably, see Figure 2 A liquid level gauge 10 is provided on the water tank 5, and the liquid level gauge 10 can detect the liquid level height in the water tank 5. Since the water tank 5 and the U-shaped bend section 301 on the discharge pipe 3 form a communicating vessel, the liquid level gauge 10 can indirectly reflect the liquid level height of the water seal in the U-shaped bend section 301, so that the water seal in the U-shaped bend section 301 has visibility, so that maintenance personnel can find faults in time and repair and maintain, and avoid the exhaust gas from being discharged from the discharge pipe 3 to the interior of the ship.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A ship automatic water seal structure, characterized in that: The invention comprises an exhaust pipe (1), an oblique branch pipe (2), a discharge pipe (3) and a water tank (5); the exhaust pipe (1) is arranged vertically and communicates with the atmosphere through a top opening; one end of the oblique branch pipe (2) is obliquely connected to the exhaust pipe (1) and the other end is connected to the exhaust outlet of the ship equipment; the discharge pipe (3) is provided with a U-shaped bend section (301), and the upstream pipe section (302) of the U-shaped bend section (301) is connected to the bottom end of the exhaust pipe (1), and the downstream pipe section (302) of the U-shaped bend section (301) is connected to the bottom end of the exhaust pipe (1). 03) is bent downward to form an overflow point (304), the water tank (5) is connected to the upstream pipe section (302) of the U-shaped bend section (301) and is connected to a water source through a water supply pipe (6), and the inner bottom wall of the water tank (5) is at the same height as the lowest position of the U-shaped bend section (301), and a float valve (7) is provided at the outlet of the water supply pipe (6). When the liquid level in the water tank (5) is at the same height as the overflow point (304), the float valve (7) completely blocks the water supply pipe (6).

2. The ship automatic water seal structure according to claim 1, characterized in that: The downstream pipe section (303) of the U-shaped bend section (301) on the discharge pipe (3) is connected to a collection cabinet, and the collection cabinet is used to store condensed water, rainwater and seawater flowing out of the exhaust pipe (1).

3. The ship automatic water seal structure according to claim 1, characterized in that: The water tank (5) is connected to a fresh water pressure cabinet via a water supply pipe (6), and the fresh water pressure cabinet stores fresh water used as a water source.

4. The ship automatic water seal structure according to claim 1, characterized in that: The water tank (5) is connected to the upstream pipe section (302) of the U-shaped bend section (301) via a connecting pipe (8), and a maintenance valve (9) is installed on both the connecting pipe (8) and the downstream pipe section (303) of the U-shaped bend section (301).

5. The ship automatic water seal structure according to claim 1, characterized in that: The water tank is provided with a liquid level meter (10).

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