Gas engine turbine rear exhaust connecting pipe connecting structure

Abstract

The utility model provides a gas engine turbine rear exhaust connecting pipe connecting structure, and belongs to the field of diesel engines. The top end of the inner cylinder is sealed, the bottom end of the inner cylinder is provided with an engine connecting flange used for being connected with an engine air outlet, and vent holes are evenly formed in the side wall of the top side of the inner cylinder; the outer cylinder sleeves the outer side of the inner cylinder, the bottom end of the outer cylinder is hermetically connected with the side wall of the inner cylinder, the top end of the outer cylinder is provided with an exhaust pipe connecting flange used for being connected with an exhaust pipe, and a water outlet is formed in the bottom side of the outer cylinder. According to the gas engine turbine rear exhaust connecting pipe connecting structure, generated condensate is attached to the inner wall of the outer barrel and discharged from the water outlet, if airflow interference occurs, the condensate is not prone to directly entering an engine from the vertical inlet of the inner barrel, then the engine is protected, meanwhile, the engine can be better protected through the design, and the service life of the engine is prolonged. Insects and some impurities are prevented from entering the engine through an air outlet of the engine, and faults of the engine are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engines, in particular to a gas engine turbine rear exhaust pipe connection structure. Background Art

[0002] The typical gas engine turbine exhaust manifold has a relatively simple connection structure. Marine gas engines typically use LNG as fuel, serving as the exhaust channel. LNG vaporization requires a significant amount of heat, so a water jacket is typically added to the turbine exhaust manifold to absorb the exhaust heat and heat the LNG fuel tank, ensuring the vessel receives the required fuel. Due to the addition of the water jacket, and the high amount of water vapor generated by LNG combustion, this heat absorption can lead to condensation within the exhaust pipe. Improper handling can cause this condensation to flow back into the engine, potentially causing failure.

[0003] Patent No. 202321786384.5 discloses a gas engine turbine rear exhaust pipe connection structure, including an inner tube and an outer tube, the outer tube is sleeved on the outer periphery of the inner tube, and a collecting chamber with an open top and a closed bottom is formed between the outer tube and the inner tube, a water outlet pipe connected to the collecting chamber is provided at the bottom of the outer tube, a first connecting flange is provided at the top of the outer tube, the top of the inner tube protrudes above the first connecting flange, and a water passage connected to the collecting chamber is provided between the inner tube and the first connecting flange, a second connecting flange is provided at the bottom end of the inner tube, and the bottom end of the outer tube is located above the second connecting flange.

[0004] In the above technology, since the inner tube is opened vertically, water droplets and water flow on the inner wall of the engine exhaust pipe connected to the outer tube are affected by the airflow from the engine and will still be sucked into the inner tube of the exhaust pipe and then flow into the engine cavity, causing engine failure. Utility Model Content

[0005] In view of the above problems, the present invention provides a gas engine turbine rear exhaust pipe connection structure.

[0006] A gas engine turbine rear exhaust pipe connection structure comprises: an inner tube, the top end of which is sealed, and the bottom end is provided with an engine connection flange for connecting to the engine outlet, and evenly arranged air vents are opened on the top side wall of the inner tube; an outer tube, which is sleeved on the outside of the inner tube, the bottom end is sealed with the inner tube side wall, the top end is provided with an exhaust pipe connection flange for connecting to the exhaust pipe, and the bottom side of the outer tube is provided with a drain outlet.

[0007] In a preferred embodiment, the vent is a swirl outlet.

[0008] In a preferred embodiment, the exhaust pipe has a flared portion, and a diameter of the flared portion is larger than diameters on both sides of the flared portion.

[0009] In a preferred embodiment, the height of the vent hole is higher than the height of the exhaust pipe connecting flange.

[0010] In a preferred embodiment, the top surface of the inner cylinder is a curved surface structure.

[0011] In a preferred embodiment, the gas engine turbine rear exhaust pipe connection structure further includes: an annular protrusion, which is arranged between the inner cylinder and the outer cylinder and on the bottom side of the outer cylinder, and is arranged in contact with the inner cylinder.

[0012] In a preferred embodiment, the gas engine turbine rear exhaust pipe connection structure further includes: a plurality of support rods evenly arranged between the inner cylinder and the outer cylinder.

[0013] In a preferred embodiment, the inner tube and the engine connection flange are an integrally formed structure, and the outer tube and the exhaust pipe connection flange are an integrally formed structure.

[0014] The present application discloses a gas engine turbine rear exhaust pipe connection structure, in which the exhaust gas of the gas engine enters the inner cylinder from the engine outlet, then flows into the outer cylinder through the vent, and flows into the exhaust pipe. During this period, the generated condensate adheres to the inner wall of the outer cylinder and is discharged from the drain port. If there is airflow interference, it is not easy for it to directly enter the engine from the vertical inlet of the inner cylinder, thereby protecting the engine. At the same time, such a design can better protect the engine, prevent insects and some impurities from entering the engine through the engine outlet, and avoid engine failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other characteristics, features and advantages of the present invention will become clear by reading the following description of exemplary embodiments with reference to the accompanying drawings. The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, are used to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort.

[0016] Figure 1 A cross-sectional view of the connection structure of the exhaust pipe after the gas engine turbine of the utility model;

[0017] Figure 2 Internal structure diagram of the gas engine turbine exhaust pipe connection structure of the utility model;

[0018] Figure 3 External structural diagram of the gas engine turbine exhaust pipe connection structure of the utility model;

[0019] In the figure: 10, inner tube; 11, engine connecting flange; 12, engine air outlet; 13, vent; 20, outer tube; 21, exhaust pipe connecting flange; 22, exhaust pipe; 23, drain outlet; 221, flared part; 13, vent; 30, annular protrusion; 31, support rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be arbitrarily combined with each other.

[0021] The gas engine turbine exhaust pipe connection structure will be described in detail below with reference to the accompanying drawings and embodiments. Example

[0022] A gas engine turbine exhaust pipe connection structure includes: an inner tube 10, the top end of which is sealed, and the bottom end is provided with an engine connection flange 11 for connecting to the engine outlet 12, and the top side wall of the inner tube 10 is provided with evenly arranged air vents 13; an outer tube 20, which is sleeved on the outside of the inner tube 10, the bottom end is sealed with the side wall of the inner tube 10, the top end is provided with an exhaust pipe connection flange 21 for connecting to the exhaust pipe 22, and the bottom side of the outer tube 20 is provided with a drain outlet 23.

[0023] When working, the exhaust gas of the gas engine enters the inner tube 10 from the engine outlet 12, then flows into the outer tube 20 through the vent 13, and flows into the exhaust pipe 22. During this period, the condensate generated adheres to the inner wall of the outer tube 20 and is discharged from the drain port 23. If there is airflow interference, it is not easy to enter the engine directly from the vertical inlet of the inner tube 10, thereby protecting the engine. At the same time, this design can better protect the engine, prevent insects and some impurities from entering the engine through the engine outlet 12, and avoid engine failure.

[0024] The height of the vent hole 13 is higher than the height of the exhaust pipe connecting flange 21 .

[0025] The top surface of the inner cylinder 10 is a curved surface structure.

[0026] The inner tube 10 and the engine connection flange 11 are an integrally formed structure, and the outer tube 20 and the exhaust pipe connection flange 21 are an integrally formed structure. Example

[0027] Example 2 is an improvement on Example 1, and the improvements include: the vent hole 13 is a swirl outlet; the exhaust pipe 22 has a flared portion 221 , and the diameter of the flared portion 221 is larger than the diameters on both sides of the flared portion 221 .

[0028] Among them, by setting the swirl air outlet, the air flow flowing out of the vent 13 is a rotating air flow. The centrifugal force generated by the rotating air flow can make the small droplets in the air flow more easily collide with the inner wall of the outer cylinder 20, which is conducive to the gathering of condensate. Example

[0029] Example 3 is an improvement on Example 1, and the improvement includes: the gas engine turbine rear exhaust pipe connection structure also includes: an annular protrusion 30, which is arranged between the inner tube 10 and the outer tube 20, and is arranged on the bottom side of the outer tube 20, and is arranged in contact with the inner tube 10.

[0030] The design of the annular protrusion 30 makes it easier for the condensate to be discharged from the drain port 23 . Example

[0031] Example 4 is an improvement on Example 1, and the improvement includes: the gas engine turbine rear exhaust pipe connection structure further includes: a plurality of support rods 31 evenly arranged between the inner tube 10 and the outer tube 20.

[0032] Among them, by designing multiple support rods 31, the inner cylinder 10 can be better supported, unnecessary shaking of the inner cylinder 10 can be reduced, noise can be reduced, and the stability of the device can be improved.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that an article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such article or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the article or device comprising the elements.

[0034] The above embodiments are intended to illustrate the technical solutions of the present invention and are not intended to limit the present invention. The present invention is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications and replacements shall be covered by the claims of the present invention.

Claims

1. A gas engine turbine exhaust pipe connection structure, characterized in that: include: The inner tube (10) is sealed at the top and provided with an engine connection flange (11) at the bottom for connecting to the engine air outlet (12), and evenly arranged vent holes (13) are provided on the top side wall of the inner tube (10); The outer cylinder (20) is sleeved on the outside of the inner cylinder (10), and the bottom end is sealed with the side wall of the inner cylinder (10). The top end is provided with an exhaust pipe connecting flange (21) for connecting to the exhaust pipe (22), and a drain outlet (23) is provided on the bottom side of the outer cylinder (20).

2. The gas engine turbine exhaust pipe connection structure according to claim 1, characterized in that: The vent hole (13) is a swirl outlet.

3. The gas engine turbine exhaust pipe connection structure according to claim 1, characterized in that: The exhaust pipe (22) has a flared portion (221), and the diameter of the flared portion (221) is larger than the diameters on both sides of the flared portion (221).

4. The gas engine turbine exhaust pipe connection structure according to claim 1, characterized in that: The height of the vent hole (13) is higher than the height of the exhaust pipe connecting flange (21).

5. The gas engine turbine exhaust pipe connection structure according to claim 1, characterized in that: The top surface of the inner cylinder (10) is a curved surface structure.

6. The gas engine turbine exhaust pipe connection structure according to claim 1, characterized in that: The gas engine turbine rear exhaust pipe connection structure further includes: An annular protrusion (30) is arranged between the inner cylinder (10) and the outer cylinder (20), and is arranged on the bottom side of the outer cylinder (20), and is arranged in contact with the inner cylinder (10).

7. The gas engine turbine exhaust pipe connection structure according to claim 1, characterized in that: The gas engine turbine rear exhaust pipe connection structure further includes: A plurality of support rods (31) are evenly arranged between the inner cylinder (10) and the outer cylinder (20).

8. The gas engine turbine exhaust pipe connection structure according to claim 1, characterized in that: The inner cylinder (10) and the engine connection flange (11) are an integrally formed structure, and the outer cylinder (20) and the exhaust pipe connection flange (21) are an integrally formed structure.

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