Parallel combined exhaust gas recirculation cooler for generator

Abstract

The utility model discloses a parallel combined type exhaust gas recirculation cooler for a generator, and relates to the technical field of automobiles, in particular to the parallel combined type exhaust gas recirculation cooler for the generator, which comprises a housing, and a plurality of exhaust gas recirculation coolers are arranged in the housing and used for cooling and recirculating exhaust gas. A parallel mechanism is arranged among the multiple exhaust gas recirculation coolers and used for parallel connection among the multiple exhaust gas recirculation coolers, the parallel mechanism comprises an air pipe assembly, the air pipe assembly comprises an air inlet main pipe installed at the right end of the interior of the housing, and the air inlet main pipe is provided with air inlet branch pipes corresponding to the multiple exhaust gas recirculation coolers; the exhaust gas recirculation coolers are designed in parallel, so that the exhaust gas recirculation coolers can work independently, exhaust gas is treated in a dispersed mode, and therefore the overall heat dissipation efficiency is improved; when the amount of waste gas is large or the temperature is high, the multiple waste gas recirculation coolers can work at the same time, and it is ensured that the waste gas is effectively cooled in time.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a parallel combined exhaust gas recirculation cooler for a generator. Background Art

[0002] EGRC is the abbreviation of Exhaust Gas Recirculation Cooler, which is a device used to cool part of the exhaust gas returned to the engine cylinder. In order to reduce the content of nitrogen oxides (NOX) in automobile exhaust, it is necessary to return part of the exhaust gas to the engine cylinder, that is, exhaust gas recirculation technology. Since the exhaust gas temperature is as high as 600°C, it must be cooled down before entering the engine intake system, so the exhaust gas recirculation cooler (EGRC) came into being;

[0003] After checking the disclosure (announcement) number: CN219327578U, an exhaust gas recirculation cooler is disclosed. This technology discloses "an exhaust gas recirculation cooler. The exhaust gas recirculation cooler is provided with an intake collecting channel, a multi-layer air flow channel layer and an exhaust collecting channel connected in sequence. The exhaust gas recirculation cooler is also provided with an inlet collecting channel, a multi-layer liquid flow channel layer and an outlet collecting channel connected in sequence. The air flow channel layer and the liquid flow channel layer are alternately stacked" and other technical solutions, which have "solved the problem of uneven heat exchange of the exhaust gas recirculation cooler, especially the problem that the heat of the exhaust gas in the ventilation pipe near the water inlet pipe cannot be quickly taken away" and other technical effects;

[0004] As emission standards continue to expand, generators are also included in the strict emission requirements, so generators also need to be equipped with EGRC (exhaust gas recirculation cooler) to reduce the content of harmful substances in the exhaust gas. However, given the high power characteristics of the generator, its cooling demand is more urgent than that of the engine, which makes the heat dissipation capacity of the conventional single EGRC seem to be stretched when dealing with high loads or extreme working conditions. Especially when the generator is in a high-intensity operation state, the exhaust gas temperature is very likely to rise rapidly, and the EGRC may be difficult to quickly and effectively reduce the exhaust gas temperature due to insufficient heat dissipation efficiency, which will undoubtedly have an adverse effect on the normal operation of the generator and the stability of the emission control system. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a parallel combined exhaust gas recirculation cooler for a generator, which has the characteristics of improving the cooling performance and reducing the gas resistance by designing each exhaust gas recirculation cooler in parallel.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a parallel combined exhaust gas recirculation cooler for a generator, comprising a housing, a plurality of exhaust gas recirculation coolers are arranged inside the housing and used to cool and recirculate the exhaust gas, a parallel mechanism is arranged between the plurality of exhaust gas recirculation coolers and used to be connected in parallel, and the parallel mechanism comprises:

[0007] The air pipe assembly includes an air intake main pipe installed at the right end of the housing, and the air intake main pipe is provided with air intake branches corresponding to the plurality of exhaust gas recirculation coolers, and an air outlet main pipe installed at the left end of the housing, and the air outlet main pipe is provided with air outlet branches corresponding to the plurality of exhaust gas recirculation coolers;

[0008] The water pipe assembly includes a water inlet main pipe installed at the lower end of the cover shell, and the water inlet main pipe is provided with water inlet branches corresponding to several exhaust gas recirculation coolers respectively, and a water outlet main pipe installed at the right end of the cover shell, and the water outlet main pipe is provided with water outlet branches corresponding to several exhaust gas recirculation coolers respectively.

[0009] Preferably, the exhaust gas recirculation cooler comprises:

[0010] The main body assembly includes several shells installed inside the housing, the right end of the shell is provided with an air inlet chamber by bolts and connected to the air inlet branch pipe, the left end of the shell is provided with an air outlet chamber by bolts and connected to the air outlet branch pipe, the front right side of the shell is provided with a water inlet hole and connected to the water inlet branch pipe, the front left side of the shell is provided with a water outlet hole and connected to the water outlet branch pipe;

[0011] The heat exchange component comprises a heat exchange filter element installed inside the shell.

[0012] Preferably, the heat exchange assembly further comprises a guide cover installed at the right end inside the shell, and a mounting frame installed at the left end inside the shell and used for positioning the heat exchange filter element.

[0013] Preferably, the heat exchange assembly further includes a plurality of flow dividers installed on the heat exchange filter element.

[0014] Preferably, a plurality of U-shaped frames are installed inside the cover shell and are used to fix the parallel mechanism, and the U-shaped frames are fixed to the cover shell by bolts.

[0015] Preferably, a cover is installed at the bottom of the housing. Beneficial Effects

[0016] The utility model provides a parallel combined exhaust gas recirculation cooler for a generator. Compared with the prior art, it has the following beneficial effects:

[0017] (1) Each exhaust gas recirculation cooler is designed in parallel so that each exhaust gas recirculation cooler can work independently and process the exhaust gas in a decentralized manner, thereby improving the overall heat dissipation efficiency; when the exhaust gas volume is large or the temperature is high, multiple exhaust gas recirculation coolers can work simultaneously to ensure that the exhaust gas is cooled in a timely and effective manner.

[0018] (2) If one of the exhaust gas recirculation coolers fails, the other exhaust gas recirculation coolers can still continue to work and maintain the basic functions of the system, which greatly improves the reliability and stability of the system and reduces the risk of system shutdown due to failure of a single component.

[0019] (3) It can be expanded or reduced according to actual needs. When the generator power increases or the workload increases, the number of EGRCs can be easily increased to meet higher heat dissipation requirements; conversely, when the power decreases or the load decreases, the number of EGRCs can be reduced to save costs and maintenance resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the exhaust gas recirculation cooler and the parallel mechanism in the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the exhaust gas recirculation cooler in the utility model;

[0023] Figure 4 It is a schematic diagram of the disassembled structure of the exhaust gas recirculation cooler in the utility model.

[0024] In the figure: 1. cover; 2. exhaust gas recirculation cooler; 21. main body assembly; 211. shell; 212. air inlet chamber; 213. air outlet chamber; 214. water inlet hole; 215. water outlet hole; 22. heat exchange assembly; 221. air guide cover; 222. mounting frame; 223. heat exchange filter element; 224. splitter frame; 3. parallel mechanism; 31. air pipe assembly; 311. air inlet main pipe; 312. air inlet branch pipe; 313. air outlet main pipe; 314. air outlet branch pipe; 32. water pipe assembly; 321. water inlet main pipe; 322. water inlet branch pipe; 323. water outlet main pipe; 324. water outlet branch pipe; 4. U-shaped frame; 5. cover. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-4 The utility model provides a technical solution of a parallel combined exhaust gas recirculation cooler for a generator: a parallel combined exhaust gas recirculation cooler for a generator, comprising a housing 1, a plurality of exhaust gas recirculation coolers 2 are arranged inside the housing 1 and are used to cool and recirculate the exhaust gas, a parallel mechanism 3 is arranged between the plurality of exhaust gas recirculation coolers 2 and is used to be connected in parallel, and the parallel mechanism 3 comprises:

[0027] The air pipe assembly 31 includes an air intake main pipe 311 installed at the right end of the housing 1, and the air intake main pipe 311 is provided with air intake branch pipes 312 corresponding to the plurality of exhaust gas recirculation coolers 2, and an air outlet main pipe 313 installed at the left end of the housing 1, and the air outlet main pipe 313 is provided with air outlet branch pipes 314 corresponding to the plurality of exhaust gas recirculation coolers 2;

[0028] The water pipe assembly 32 includes a water inlet main pipe 321 installed at the lower end of the cover shell 1, and the water inlet main pipe 321 is provided with water inlet branch pipes 322 corresponding to the plurality of exhaust gas recirculation coolers 2 respectively, and a water outlet main pipe 323 installed at the right end of the cover shell 1, and the water outlet main pipe 323 is provided with water outlet branch pipes 324 corresponding to the plurality of exhaust gas recirculation coolers 2 respectively.

[0029] In this embodiment, each exhaust gas recirculation cooler 2 is designed in parallel through a parallel mechanism 3, so that each exhaust gas recirculation cooler 2 can work independently and process the exhaust gas in a decentralized manner, thereby improving the overall heat dissipation efficiency; when the exhaust gas volume is large or the temperature is high, multiple exhaust gas recirculation coolers 2 can work at the same time to ensure that the exhaust gas is cooled in a timely and effective manner; and the parallel structure means that even if one of the exhaust gas recirculation coolers 2 fails, the other exhaust gas recirculation coolers 2 can still continue to work and maintain the basic functions of the system, which greatly improves the reliability and stability of the system and reduces the risk of system shutdown due to failure of a single component.

[0030] Specifically, the exhaust gas recirculation cooler 2 includes:

[0031] The main body component 21 includes a plurality of shells 211 installed inside the housing 1. The right end of the shell 211 is provided with an air inlet chamber 212 by bolts and connected to an air inlet branch pipe 312. The left end of the shell 211 is provided with an air outlet chamber 213 by bolts and connected to an air outlet branch pipe 314. The front right side of the shell 211 is provided with a water inlet hole 214 and connected to a water inlet branch pipe 322. The front left side of the shell 211 is provided with a water outlet hole 215 and connected to a water outlet branch pipe 324.

[0032] The heat exchange assembly 22 includes a heat exchange filter element 223 installed inside the housing 211 .

[0033] In this embodiment, the exhaust gas enters the air inlet chamber 212, dissipates heat through the heat exchange component 22, and is discharged from the air outlet chamber 213. In addition, the coolant enters through the water inlet hole 214 to reduce the temperature of the exhaust gas, and is then discharged from the water outlet hole 215 and takes away the heat generated by the shell 211.

[0034] Specifically, the heat exchange assembly 22 further includes a guide cover 221 installed at the right end of the shell 211 and a mounting frame 222 installed at the left end of the shell 211 and used to position the heat exchange filter element 223 .

[0035] In this embodiment, the incoming gas is guided by the guide cover 221 and then enters the heat exchange filter element 223, thereby optimizing the airflow and reducing the resistance.

[0036] Specifically, the heat exchange assembly 22 further includes a plurality of flow dividers 224 installed on the heat exchange filter element 223 .

[0037] In this embodiment, each heat exchange filter element 223 can be separated by a splitter frame 224 so that the gas flows in evenly.

[0038] Specifically, a plurality of U-shaped frames 4 are installed inside the housing 1 and are used to fix the parallel mechanism 3 , and the U-shaped frames 4 are fixed to the housing 1 by bolts.

[0039] In this embodiment, the parallel mechanism 3 and the exhaust gas recirculation cooler 2 are fixed in the housing 1 together through the U-shaped frame 4 and bolts to form a complete EGRC module; and it can be expanded or reduced according to actual needs. When the generator power is increased or the workload increases, the number of EGRCs can be conveniently increased to meet higher heat dissipation requirements; conversely, when the power is reduced or the load is reduced, the number of EGRCs can also be reduced to save costs and maintenance resources.

[0040] Specifically, a cover 5 is installed at the bottom of the housing 1 .

[0041] In this embodiment, after the exhaust gas recirculation cooler 2 and the parallel mechanism 3 are installed inside the housing 1, the cover 5 is fixed on the housing 1 to protect the exhaust gas recirculation cooler 2 and the parallel mechanism 3.

[0042] The working principle and use process of the utility model are as follows: first, the exhaust gas enters the air inlet chamber 212 after passing through the air inlet branch pipe 312 from the air inlet main pipe 311, and is discharged from the air outlet chamber 213 into the air outlet branch pipe 314 after heat dissipation through the heat exchange component 22, and is then discharged from the air outlet main pipe 313; at the same time, the coolant enters from the water inlet main pipe 321 through the water inlet branch pipe 322 and from the water inlet hole 214 to reduce the temperature of the exhaust gas, and then is discharged from the water outlet main pipe 323 to the water outlet branch pipe 324 from the water outlet hole 215 and takes away the heat generated by the shell 211, thereby improving the cooling performance and reducing the gas resistance.

[0043] 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", "comprises" or any other variations 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.

[0044] 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 parallel combined exhaust gas recirculation cooler for a generator, characterized in that: The invention comprises a housing (1), wherein a plurality of exhaust gas recirculation coolers (2) are arranged inside the housing (1) and are used to cool and recirculate the exhaust gas, and a parallel mechanism (3) is arranged between the plurality of exhaust gas recirculation coolers (2) and is used to be connected in parallel, and the parallel mechanism (3) comprises: An air pipe assembly (31) comprises an air intake main pipe (311) installed at the right end of the housing (1), the air intake main pipe (311) being provided with air intake branch pipes (312) corresponding to the plurality of exhaust gas recirculation coolers (2), and an air outlet main pipe (313) installed at the left end of the housing (1), the air outlet main pipe (313) being provided with air outlet branch pipes (314) corresponding to the plurality of exhaust gas recirculation coolers (2). The water pipe assembly (32) comprises a water inlet main pipe (321) installed at the lower end of the housing (1), the water inlet main pipe (321) being provided with water inlet branch pipes (322) corresponding to the plurality of exhaust gas recirculation coolers (2), and a water outlet main pipe (323) installed at the right end of the housing (1), the water outlet main pipe (323) being provided with water outlet branch pipes (324) corresponding to the plurality of exhaust gas recirculation coolers (2).

2. The parallel combined exhaust gas recirculation cooler for a generator according to claim 1, characterized in that: The exhaust gas recirculation cooler (2) comprises: A main body assembly (21), a plurality of shells (211) installed inside the cover (1), an air inlet chamber (212) installed at the right end of the shell (211) by bolts and connected to an air inlet branch pipe (312), an air outlet chamber (213) installed at the left end of the shell (211) by bolts and connected to an air outlet branch pipe (314), a water inlet hole (214) provided on the right side of the front end of the shell (211) and connected to a water inlet branch pipe (322), and a water outlet hole (215) provided on the left side of the front end of the shell (211) and connected to a water outlet branch pipe (324); The heat exchange component (22) comprises a heat exchange filter element (223) installed inside the housing (211).

3. The parallel combined exhaust gas recirculation cooler for a generator according to claim 2, characterized in that: The heat exchange assembly (22) further comprises a flow guide cover (221) installed at the right end inside the shell (211), and a mounting frame (222) installed at the left end inside the shell (211) and used for positioning the heat exchange filter element (223).

4. The parallel combined exhaust gas recirculation cooler for a generator according to claim 3, characterized in that: The heat exchange assembly (22) further comprises a plurality of flow dividers (224) installed on the heat exchange filter element (223).

5. The parallel combined exhaust gas recirculation cooler for a generator according to claim 1, characterized in that: A plurality of U-shaped frames (4) are installed inside the cover shell (1) and are used to fix the parallel mechanism (3), and the U-shaped frames (4) are fixed to the cover shell (1) by means of bolts.

6. The parallel combined exhaust gas recirculation cooler for a generator according to claim 1, characterized in that: A cover (5) is installed at the bottom of the cover shell (1).

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