Urea storage tank device for marine diesel engine

Abstract

The utility model relates to the technical field of storage tank devices, and discloses a urea storage tank device for a marine diesel engine, which comprises a tank body, a vent pipe is arranged in the middle of the upper end of the tank body, a cooling water outlet pipe is arranged on the front side of the upper end of the tank body, and a cooling water inlet pipe is arranged on the rear side of the upper end of the tank body. A cooling coil pipe is arranged in the tank body, the cooling coil pipe is connected with the tank body through a fixing support, and the upper end of the cooling coil pipe is connected with a cooling water inlet pipe and a cooling water outlet pipe; and a magnetic turning plate type liquid level meter, an electrical junction box and a temperature sensor are sequentially mounted on the left side of the tank body from top to bottom. The temperature sensor is arranged to be matched with the cooling water circulation system, so that the urea storage tank is kept at the normal temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of storage tank devices, in particular to a urea storage tank device for a marine diesel engine. Background Art

[0002] A marine diesel engine is an internal combustion engine specially designed for ship propulsion systems. It generates power by burning diesel to drive the ship's propeller or other power devices. The working principle of a marine diesel engine is based on a four-stroke cycle, which includes four basic stages: intake, compression, combustion, and exhaust. This type of engine usually has high efficiency, high reliability, and a strong ability to adapt to different loads. The design of a marine diesel engine takes into account the special requirements of the marine environment, such as corrosion resistance, vibration and noise control, and the ability to operate continuously for a long time. In addition, the cooling system of a marine diesel engine usually adopts an internal and external double-circulation water cooling method to improve the service life and reliability of the engine.

[0003] The International Maritime Organization has increasingly stringent emission requirements for operating ships, and the NOx Tier III emission requirements are being implemented. In order to adapt to the limited conditions on board, a one-day urea storage tank is often placed in the engine room to store urea for diesel engine SCR. Since the suitable storage temperature of urea is 0-35℃, and the ambient temperature of the engine room is generally 5-55℃, in order to prevent urea from deteriorating due to excessive temperature, a urea storage tank device for marine diesel engines is proposed. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the utility model provides a urea storage tank device for a marine diesel engine to solve the problems raised in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above object, the utility model provides the following technical solution: a urea storage tank device for a marine diesel engine, comprising a tank body, a vent pipe is arranged at the middle position of the upper end of the tank body, a cooling water outlet pipe is arranged at the front side of the upper end of the tank body, and a cooling water inlet pipe is arranged at the rear side of the upper end of the tank body;

[0008] A cooling coil is provided inside the tank body, and the cooling coil is connected to the tank body through a fixed bracket, and the upper end of the cooling coil is connected to a cooling water inlet pipe and a cooling water outlet pipe;

[0009] The left side of the tank body is installed with a magnetic flap level gauge, an electrical junction box and a temperature sensor from top to bottom. The cooling water is seawater, and the cooling water has its own temperature monitoring device. The storage medium of the tank body is a 40% urea aqueous solution. The material of the parts that are in direct contact with the medium of the tank body and the internal cooling coil is 316L.

[0010] Preferably, a manhole is provided at the front end of the exterior of the tank body, a urea reflux inlet pipe is provided on the left side of the upper end of the tank body, and a high-level overflow pipe is provided on the right side of the upper end of the tank body, and the high-level overflow pipe is used to prevent the liquid level from being too high.

[0011] Preferably, a second manual ball valve is installed inside the urea reflux inlet pipe, a urea inlet pipe is arranged on the right side of the upper end of the tank body, and a first manual ball valve is installed inside the urea inlet pipe.

[0012] Preferably, a urea outlet pipe is provided on the left side of the lower end of the outer portion of the tank body, and a pneumatic solenoid valve is installed outside the urea outlet pipe, and the pneumatic solenoid valve is used to control the discharge of the urea outlet pipe.

[0013] Preferably, a base is provided at the lower end of the tank body, and the base is connected to the tank body.

[0014] Preferably, a waste liquid discharge pipe is arranged on the left side of the outside of the base, and a third manual ball valve is installed inside the waste liquid discharge pipe, and the third manual ball valve is used to control the waste liquid discharge pipe to discharge waste.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a urea storage tank device for a marine diesel engine, which has the following beneficial effects:

[0017] The utility model detects temperature abnormality through a temperature sensor, and cooling water enters the cooling coil of the tank body through a cooling water inlet pipe, thereby cooling the urea solution, and the waste cooling water is discharged from the cooling water outlet to realize cooling water circulation until the temperature sensor detects that the temperature inside the tank body returns to normal, thereby solving the problems raised in the background technology. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a left view of the utility model;

[0020] Figure 3 It is a top view of the utility model;

[0021] Figure 4 It is a three-dimensional diagram of the utility model.

[0022] In the figure: 1. tank body; 2. base; 3. vent pipe; 4. urea inlet pipe; 5. urea reflux inlet pipe; 6. cooling water inlet pipe; 7. cooling water outlet pipe; 8. high-level overflow pipe; 9. urea outlet pipe; 10. waste liquid discharge pipe; 11. cooling coil; 12. fixed bracket; 13. magnetic flap level gauge; 14. temperature sensor; 15. electrical junction box; 16. manhole;

[0023] 401, first manual ball valve; 501, second manual ball valve; 901, pneumatic solenoid valve; 1001, third manual ball valve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides a technical solution, a urea storage tank device for a marine diesel engine, please refer to Figure 1 , Figure 2 and Figure 3 , comprising a tank body 1, a vent pipe 3 is arranged at the middle position of the upper end of the tank body 1, a cooling water outlet pipe 7 is arranged at the front side of the upper end of the tank body 1, and a cooling water inlet pipe 6 is arranged at the rear side of the upper end of the tank body 1;

[0026] A cooling coil 11 is provided inside the tank body 1, and the cooling coil 11 is connected to the tank body 1 through a fixing bracket 12, and the upper end of the cooling coil 11 is connected to a cooling water inlet pipe 6 and a cooling water outlet pipe 7;

[0027] A magnetic flap-type liquid level gauge 13, an electrical junction box 15 and a temperature sensor 14 are installed on the left side of the tank body 1 from top to bottom. The cooling water is seawater, and the cooling water has its own temperature monitoring device. The storage medium of the tank body 1 is a 40% urea aqueous solution. The material of the tank body 1 and the parts of the cooling coil 11 inside that are in direct contact with the medium is 316L.

[0028] See also Figure 1 and Figure 4 A manhole 16 is provided at the front end of the tank body 1, a urea reflux inlet pipe 5 is provided on the left side of the upper end of the tank body 1, and a high-level overflow pipe 8 is provided on the right side of the upper end of the tank body 1. The high-level overflow pipe 8 is used to prevent the liquid level from being too high.

[0029] See also Figure 1 and Figure 4A second manual ball valve 501 is installed inside the urea reflux inlet pipe 5 , a urea inlet pipe 4 is provided on the right side of the upper end of the tank body 1 , and a first manual ball valve 401 is installed inside the urea inlet pipe 4 .

[0030] See also Figure 1 A urea outlet pipe 9 is arranged on the left side of the lower end of the outer portion of the tank body 1 , and a pneumatic solenoid valve 901 is installed outside the urea outlet pipe 9 . The pneumatic solenoid valve 901 is used to control the discharge of the urea outlet pipe 9 .

[0031] See also Figure 1 , Figure 2 and Figure 4 A base 2 is provided at the lower end of the tank body 1, and the base 2 is connected to the tank body 1.

[0032] See also Figure 2 A waste liquid discharge pipe 10 is arranged on the left side outside the base 2, and a third manual ball valve 1001 is installed inside the waste liquid discharge pipe 10. The third manual ball valve 1001 is used to control the waste liquid discharge pipe 10 to discharge waste.

[0033] This solution: an electrical control cabinet is installed outside the ship's electrical engine room. The electrical control cabinet is provided with a monitoring screen for displaying the urea temperature detected by the temperature sensor 14 and the operating status of the tank body 1; the electrical control cabinet is also built-in with driving devices such as a controller and a delivery pump to ensure the automatic operation of the device and the system. The magnetic flap type liquid level gauge 13 and the temperature sensor 14 are used to monitor the liquid level and urea temperature in the tank body 1. When the urea temperature in the tank body 1 is abnormal, the cooling water (seawater) is automatically controlled to enter the cooling coil 11 in the tank body 1 through the cooling water inlet pipe 6, thereby cooling the urea solution in the tank body 1, and the used cooling water is discharged from the cooling water outlet pipe 7. The first manual ball valve 401 of the urea inlet pipe 4 is opened to fill the tank body 1 with urea solution; when the temperature sensor 14 detects that the temperature of the urea solution in the tank body 1 is abnormal, the cooling water (seawater) enters the cooling coil 11 in the tank body 1 through the cooling water inlet pipe 6, thereby cooling the urea solution in the tank body 1, and the used cooling water is discharged from the cooling water outlet pipe 7; the cooling water in the cooling coil 11 is always in a circulating state until the temperature of the urea solution in the tank body 1 returns to normal.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A urea storage tank device for a marine diesel engine, comprising a tank body (1), characterized in that: A vent pipe (3) is provided at the middle position of the upper end of the tank body (1), a cooling water outlet pipe (7) is provided at the front side of the upper end of the tank body (1), and a cooling water inlet pipe (6) is provided at the rear side of the upper end of the tank body (1); A cooling coil (11) is arranged inside the tank body (1), and the cooling coil (11) is connected to the tank body (1) via a fixing bracket (12), and the upper end of the cooling coil (11) is connected to a cooling water inlet pipe (6) and a cooling water outlet pipe (7); A magnetic flap-type liquid level gauge (13), an electrical connection box (15) and a temperature sensor (14) are installed in sequence on the left side of the tank body (1) from top to bottom.

2. A urea storage tank device for a marine diesel engine according to claim 1, characterized in that: A manhole (16) is provided at the front end of the exterior of the tank body (1), a urea reflux inlet pipe (5) is provided on the left side of the upper end of the tank body (1), and a high-level overflow pipe (8) is provided on the right side of the upper end of the tank body (1).

3. A urea storage tank device for a marine diesel engine according to claim 2, characterized in that: A second manual ball valve (501) is installed inside the urea reflux inlet pipe (5), a urea inlet pipe (4) is provided on the right side of the upper end of the tank body (1), and a first manual ball valve (401) is installed inside the urea inlet pipe (4).

4. A urea storage tank device for a marine diesel engine according to claim 3, characterized in that: A urea outlet pipe (9) is provided on the left side of the lower end of the outside of the tank body (1), and a pneumatic solenoid valve (901) is installed outside the urea outlet pipe (9).

5. The urea storage tank device for a marine diesel engine according to claim 1, characterized in that: A base (2) is provided at the lower end of the tank body (1), and the base (2) is connected to the tank body (1).

6. A urea storage tank device for a marine diesel engine according to claim 5, characterized in that: A waste liquid discharge pipe (10) is arranged on the left side of the outside of the base (2), and a third manual ball valve (1001) is installed inside the waste liquid discharge pipe (10).

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