Integrated case body based on two-stage pressurization system

Abstract

An integrated case body based on a two-stage pressurization system. Provided in the integrated case body (1) are a high-pressure air cavity (12), a high-pressure-stage intercooler mounting cavity (17), a high-temperature water return cavity (14), a high-temperature water inlet cavity (13), an intercooling water return cavity (15), a intercooling water inlet cavity (18), a high-temperature water cavity (21), and an EGR gas chamber (29). The high-pressure-stage intercooler mounting cavity (17) is connected to the high-pressure air cavity (12), the high-temperature water return cavity (14), the high-temperature water inlet cavity (13), the intercooling water return cavity (15), and the intercooling water inlet cavity (18). The integrated case body (1) is provided with a high-pressure-stage pressurizer mounting base (5) and a low-pressure-stage pressurizer mounting base (4). An inner wall of the high-pressure-stage intercooler mounting cavity (17) is provided with a low-pressure-stage intercooler mounting opening (22) and a mixed gas outlet (30). The integrated case body integrates the installation of various components, thereby making the overall arrangement of the intercooler and the pressurizer in the two-stage pressurization system compact.

Description

An integrated box based on a two-stage boosting system Technical Field

[0001] The present invention relates to the technical field of diesel engine related equipment, and in particular to an integrated box based on a two-stage supercharging system. Background Art

[0002] Due to the high working pressure of diesel engines in internal combustion locomotives, the relevant parts are required to have high structural strength and rigidity. In the existing diesel engines equipped with a two-stage supercharging system, installing an intercooler and a supercharger will result in more peripheral piping and low reliability, which makes the diesel engine relatively heavy and large in size. Technical issues

[0003] The present invention aims to solve the above-mentioned defects and provides an integrated box based on a two-stage boosting system. Technical Solutions

[0004] In order to overcome the defects existing in the background technology, the technical solution adopted by the present invention to solve its technical problems is: an integrated box based on a two-stage supercharging system, including an integrated box, a high-pressure air chamber, a high-pressure intercooler installation chamber, a high-temperature water return chamber, a high-temperature water inlet chamber, an intermediate cooling water return chamber, an intermediate cooling water inlet chamber, a high-temperature water chamber and an EGR gas chamber are opened inside the integrated box, the high-pressure intercooler installation chamber is respectively connected to the high-pressure air chamber, the high-temperature water return chamber, the high-temperature water inlet chamber, the intermediate cooling water return chamber and the intermediate cooling water inlet chamber, a high-pressure stage supercharger mounting seat and a low-pressure stage supercharger mounting seat are arranged on the integrated box, the high-pressure stage A low-pressure intercooler installation port and a mixed gas outlet are provided on the inner wall of the intercooler installation cavity, a high-pressure air inlet is provided on the inner wall of the high-pressure air cavity, a high-temperature water return outlet is provided on the inner wall of the high-temperature water return cavity, a front high-temperature water outlet and a rear high-temperature water inlet are provided on the inner wall of the high-temperature water inlet cavity, an inter-cooled water return outlet is provided on the inner wall of the inter-cooled water return cavity, a front inter-cooled water outlet and an inter-cooled water inlet are provided on the inner wall of the inter-cooled water inlet cavity, a rear high-temperature water outlet and a high-temperature water inlet are provided on the inner wall of the high-temperature water cavity, an EGR gas inlet is provided on the inner wall of the EGR gas cavity, and the EGR gas cavity is connected to the mixed gas outlet.

[0005] Further improvements include symmetrically setting high-pressure intercooler installation cavities on both sides of the high-pressure air cavity, and sequentially setting a high-temperature water return cavity, a high-temperature water inlet cavity, an intercooler return cavity, an intercooler inlet cavity, and a high-temperature water cavity at the lower end of the high-pressure air cavity. The EGR gas chamber is arranged opposite to the high-temperature water return cavity, and the low-pressure stage supercharger mounting seat is located directly above the high-pressure stage intercooler installation cavity.

[0006] A further improvement includes providing a high-pressure air outlet for communication between the high-pressure air cavity and the high-pressure stage intercooler installation cavity.

[0007] A further improvement includes providing an internal high-temperature water return port for communication between the high-temperature water return chamber and the high-pressure intercooler installation chamber.

[0008] A further improvement includes providing an internal high-temperature water outlet for communication between the high-temperature water inlet cavity and the high-pressure intercooler installation cavity.

[0009] A further improvement includes providing an inner intercooler return port for communication between the intercooler return chamber and the high-pressure intercooler installation chamber.

[0010] A further improvement includes providing an inner intercooler water outlet for communication between the intercooler water inlet cavity and the high-pressure intercooler installation cavity.

[0011] A further improvement includes providing an EGR gas outlet for communication between the EGR gas chamber and the mixed gas outlet.

[0012] A further improvement includes providing an oil-gas separator mounting seat on the integrated box, wherein the oil-gas separator mounting seat is located directly above the high-pressure stage intercooler mounting cavity.

[0013] A further improvement includes arranging the mixed gas outlet to correspond to the installation port of the low-pressure stage intercooler. Beneficial effects

[0014] The beneficial effects of the present invention are: this design integrates the installation of multiple components, solves the overall compact arrangement of the intercooler and the supercharger in the two-stage supercharging system, and designs the high-pressure gas cavity after the high-pressure stage supercharger is supercharged, the EGR exhaust gas cavity and the mixed gas outlet. The cooling water cavity is designed in the middle of the structure to realize a composite intercooler structure, which not only meets the cooling needs of high-strength diesel engines, but also reduces the number of locomotive cooling sections, providing space and weight margin for locomotive design. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and examples.

[0016] FIG1 is a front view of the present invention;

[0017] FIG2 is a rear view of the present invention;

[0018] FIG3 is a cross-sectional view 1 of the present invention;

[0019] FIG4 is a second cross-sectional view of the present invention;

[0020] In the figure, 1-integrated box, 2-rear high-temperature water outlet, 3-EGR gas inlet, 4-low-pressure stage supercharger mounting seat, 5-high-pressure stage supercharger mounting seat, 6-rear high-temperature water inlet, 7-oil-gas separator mounting seat, 8-intermediate cooling water outlet, 9-intermediate cooling water return port, 10-intermediate high-temperature water outlet, 11-intermediate high-temperature water return port, 12-high-pressure air chamber, 13-high-temperature water inlet chamber, 14-high-temperature water return chamber (14), 15-intermediate cooling water return chamber, 16-high-pressure air outlet, 17-high-pressure intercooler installation cavity, 18-intercooler water inlet cavity, 19-intercooler water inlet, 20-high-temperature water inlet, 21-high-temperature water cavity, 22-low-pressure intercooler installation port, 23-intercooler water return outlet, 24-high-temperature water return outlet, 25-high-pressure air inlet, 26-front high-temperature water outlet, 27-front intercooler water outlet, 28-EGR gas outlet, 29-EGR gas chamber, 30-mixed gas outlet. Modes for Carrying Out the Invention

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art without creative effort based on the embodiments of the present invention are within the scope of protection of the present invention.

[0022] As shown in Figures 1, 2, 3 and 4, an integrated box based on a two-stage supercharging system includes an integrated box 1, wherein a high-pressure air chamber 12, a high-pressure intercooler mounting chamber 17, a high-temperature water return chamber 14, a high-temperature water inlet chamber 13, an intermediate cooling water return chamber 15, an intermediate cooling water inlet chamber 18, a high-temperature water chamber 21 and an EGR gas chamber 29 are provided inside the integrated box 1, and the high-pressure intercooler mounting chamber 17 is respectively connected to the high-pressure air chamber 12, the high-temperature water return chamber 14, the high-temperature water inlet chamber 13, the intermediate cooling water return chamber 15 and the intermediate cooling water inlet chamber 18, a high-pressure stage supercharger mounting seat 5 and a low-pressure stage supercharger mounting seat 4 are provided on the integrated box 1, and a low-pressure stage supercharger mounting seat 4 is provided on the inner wall of the high-pressure stage intercooler mounting chamber 17. The high-pressure intercooler installation port 22 and the mixed gas outlet 30 are provided. The inner wall of the high-pressure air chamber 12 is provided with a high-pressure air inlet 25. The inner wall of the high-temperature water return chamber 14 is provided with a high-temperature water return outlet 24. The inner wall of the high-temperature water inlet chamber 13 is provided with a front high-temperature water outlet 26 and a rear high-temperature water inlet 6. The inner wall of the intermediate cooling water return chamber 15 is provided with an intermediate cooling water return outlet 23. The inner wall of the intermediate cooling water inlet chamber 18 is provided with a front intermediate cooling water outlet 27 and an intermediate cooling water inlet 19. The inner wall of the high-temperature water chamber 21 is provided with a rear high-temperature water outlet 2 and a high-temperature water inlet 20. The inner wall of the EGR gas chamber 29 is provided with an EGR gas inlet 3. The EGR gas chamber 29 is connected to the mixed gas outlet 30.

[0023] High-pressure intercooler mounting cavities 17 are symmetrically arranged on both sides of the high-pressure air cavity 12. A high-temperature water return cavity 14, a high-temperature water inlet cavity 13, an intercooler return cavity 15, an intercooler inlet cavity 18, and a high-temperature water cavity 21 are sequentially arranged at the lower end of the high-pressure air cavity 12. The EGR gas chamber 29 is arranged opposite to the high-temperature water return cavity 14. The low-pressure stage supercharger mounting seat 4 is located directly above the high-pressure stage intercooler mounting cavity 17.

[0024] According to the above embodiment, the high-pressure stage supercharger and the low-pressure stage supercharger are mounted on the high-pressure stage supercharger mounting seat 5 and the low-pressure stage supercharger mounting seat 4 , and the low-pressure stage intercooler is mounted on the low-pressure stage intercooler mounting port 22 .

[0025] Multiple cooling water chambers are designed in the middle of the device to realize a composite intercooler structure, which not only meets the cooling needs of high-strength diesel engines, but also reduces the number of cooling sections of the locomotive, provides space and weight margin for locomotive design, reduces the connection of external pipelines, and designs the high-pressure air chamber 12, EGR gas chamber 29 and mixed gas outlet 30 after the high-pressure stage supercharger is boosted, solving the overall compact arrangement of the intercooler and supercharger in the two-stage supercharging system.

[0026] A high-pressure air outlet 16 for communication is provided between the high-pressure air cavity 12 and the high-pressure intercooler mounting cavity 17; an internal high-temperature water return port 11 for communication is provided between the high-temperature water return cavity 14 and the high-pressure intercooler mounting cavity 17; an internal high-temperature water outlet 10 for communication is provided between the high-temperature water inlet cavity 13 and the high-pressure intercooler mounting cavity 17; an internal intermediate cooling water return port 9 for communication is provided between the intermediate cooling water return cavity 15 and the high-pressure intercooler mounting cavity 17; an internal intermediate cooling water outlet 8 for communication is provided between the intermediate cooling water inlet cavity 18 and the high-pressure intercooler mounting cavity 17. By adopting the above embodiment, the high-pressure intercooler mounting cavity 17 is connected with the high-pressure air cavity 12, the high-temperature water return cavity 14, and the high-temperature water inlet cavity 13. 3. The intercooler water return chamber 15 and the intercooler water inlet chamber 18 are connected, which is beneficial for the high-pressure intercooler to be connected with the high-temperature water return chamber 14, the high-temperature water inlet chamber 13, the intercooler water return chamber 15, and the intercooler water inlet chamber 18 through the interface. An EGR gas outlet 28 for communication is provided between the EGR gas chamber 29 and the mixed gas outlet 30. The fresh air cooled by the high-pressure intercooler and the EGR exhaust gas are discharged into the mixed gas outlet 30 through the EGR gas outlet 28 to mix the fresh air and the exhaust gas. The mixed gas enters the intake pipes on the left and right sides of the diesel engine. An oil-gas separator mounting seat 7 is provided on the integrated box body 1. The oil-gas separator mounting seat 7 is located directly above the high-pressure intercooler mounting chamber 17, and an oil-gas separator is installed on the oil-gas separator mounting seat 7.

[0027] The mixed gas outlet 30 is provided corresponding to the low-pressure stage intercooler installation port 22 .

[0028] Working principle:

[0029] After being pressurized by the two low-pressure superchargers, the fresh air enters the two low-pressure intercoolers on the front face of the integrated box 1 for cooling. The cooled air then enters the high-pressure supercharger for supercharging. The air pressurized by the high-pressure supercharger enters the high-pressure air cavity 12 in the integrated box through the high-pressure air inlet 25 on the integrated box 1. The air is then divided into two paths, left and right, and enters the high-pressure intercoolers through the high-pressure air outlet 16 for cooling before flowing out.

[0030] After being cooled by EGR, the exhaust gas enters the EGR gas chamber 29 in the integrated box 1 through the EGR gas inlet 3 on the integrated box 1, and then flows out through the EGR gas outlet 28 in two ways.

[0031] Finally, the fresh air and EGR exhaust gas are mixed and discharged through the mixed gas outlet 30 in the integrated box, and enter the intake pipes on the left and right sides of the diesel engine respectively.

[0032] As for high-temperature cooling water, the high-temperature water pumped by the high-temperature water pump enters the high-temperature water cavity 21 in the integrated box 1 through the high-temperature water inlet 20 on the integrated box 1, and then enters the diesel engine through the rear high-temperature water outlet 2 on the back of the integrated box 1;

[0033] After cooling the diesel engine, the high-temperature water enters the high-temperature water inlet chamber 13 in the integrated box 1 through the rear high-temperature water inlet 6 on the integrated box 1, and then enters the high-pressure intercooler through the internal high-temperature water outlet 10 in the integrated box 1, and enters the low-pressure intercooler through the front high-temperature water outlet 26 on the integrated box 1. The high-temperature water passing through the high-pressure intercooler enters the high-temperature water return chamber 14 in the integrated box 1 through the internal high-temperature water return port 11 in the integrated box 1, and finally flows out through the high-temperature water return outlet 24 on the integrated box 1, and directly returns to the locomotive water tank after merging with the high-temperature water flowing out of the low-pressure intercooler.

[0034] As for the intercooler cooling water, the intercooler water pumped by the intercooler water pump enters the intercooler water inlet cavity 18 in the integrated box 1 through the intercooler water inlet 19 on the integrated box 1, and then enters the high-pressure intercoolers on the left and right sides through the inner intercooler water outlet 8 in the integrated box 1, and enters the low-pressure intercoolers on the left and right sides through the front intercooler water outlet 27 on the integrated box 1. The intercooler water passing through the high-pressure intercooler enters the intercooler water return cavity 15 in the integrated box 1 through the inner intercooler water return port 9 in the integrated box 1, and finally flows out through the intercooler water return outlet 23 on the integrated box 1, and directly returns to the locomotive water tank after merging with the intercooler water flowing out of the low-pressure intercooler.

[0035] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An integrated box body based on a two-stage supercharging system, comprising an integrated box body (1), characterized in that, Inside the integrated box body (1), a high-pressure air chamber (12), a high-pressure stage intercooler installation chamber (17), a high-temperature water return chamber (14), a high-temperature water inlet chamber (13), a medium-cooling water return chamber (15), a medium-cooling water inlet chamber (18), a high-temperature water chamber (21), and an EGR gas chamber (29) are provided. The high-pressure stage intercooler installation chamber (17) is respectively connected to the high-pressure air chamber (12), the high-temperature water return chamber (14), the high-temperature water inlet chamber (13), the medium-cooling water return chamber (15), and the medium-cooling water inlet chamber (18). On the integrated box body (1), a high-pressure stage supercharger mounting seat (5) and a low-pressure stage supercharger mounting seat (4) are provided. On the inner wall of the high-pressure stage intercooler installation chamber (17), a low-pressure stage intercooler installation opening (22) and a mixed gas outlet (30) are provided. On the inner wall of the high-pressure air chamber (12), a high-pressure air inlet (25) is provided. On the inner wall of the high-temperature water return chamber (14), a high-temperature water return outlet (24) is provided. On the inner wall of the high-temperature water inlet chamber (13), a front high-temperature water outlet (26) and a rear high-temperature water inlet (6) are provided. On the inner wall of the medium-cooling water return chamber (15), a medium-cooling water return outlet (23) is provided. On the inner wall of the medium-cooling water inlet chamber (18), a front medium-cooling water outlet (27) and a medium-cooling water inlet (19) are provided. On the inner wall of the high-temperature water chamber (21), a rear high-temperature water outlet (2) and a high-temperature water inlet (20) are provided. On the inner wall of the EGR gas chamber (29), an EGR gas inlet (3) is provided. The EGR gas chamber (29) is connected to the mixed gas outlet (30).

2. The integrated box body based on a two-stage supercharging system according to claim 1, characterized in that: On both sides of the high-pressure air chamber (12), high-pressure stage intercooler installation chambers (17) are symmetrically provided. Below the high-pressure air chamber (12), the high-temperature water return chamber (14), the high-temperature water inlet chamber (13), the medium-cooling water return chamber (15), the medium-cooling water inlet chamber (18), and the high-temperature water chamber (21) are sequentially arranged. The EGR gas chamber (29) is arranged opposite to the high-temperature water return chamber (14). The low-pressure stage supercharger mounting seat (4) is located directly above the high-pressure stage intercooler installation chamber (17).

3. An integrated box based on a two-stage supercharging system according to claim 1 or 2, characterized in that: A high-pressure air outlet (16) for communication is provided between the high-pressure air chamber (12) and the high-pressure stage intercooler installation chamber (17).

4. An integrated box based on a two-stage supercharging system according to claim 1 or 2, characterized in that: An inner high-temperature water return port (11) for communication is provided between the high-temperature water return chamber (14) and the high-pressure stage intercooler installation chamber (17).

5. An integrated box based on a two-stage supercharging system according to claim 1 or 2, characterized in that: An inner high-temperature water outlet (10) for communication is provided between the high-temperature water inlet chamber (13) and the high-pressure stage intercooler installation chamber (17).

6. An integrated box based on a two-stage supercharging system according to claim 1 or 2, characterized in that: An inner medium-cooling water return port (9) for communication is provided between the medium-cooling water return chamber (15) and the high-pressure stage intercooler installation chamber (17).

7. An integrated box body based on a two-stage supercharging system according to claim 1 or 2, characterized in that: An inner medium-cooling water outlet (8) for communication is provided between the medium-cooling water inlet chamber (18) and the high-pressure stage intercooler installation chamber (17).

8. An integrated box based on a two-stage supercharging system according to claim 1 or 2, characterized in that: An EGR gas outlet (28) for communication is provided between the EGR gas chamber (29) and the mixed gas outlet (30).

9. An integrated box based on a two-stage supercharging system according to claim 1 or 2, characterized in that: An oil-gas separator mounting seat (7) is provided on the integrated box body (1), and the oil-gas separator mounting seat (7) is located directly above the high-pressure stage intercooler mounting cavity (17).

10. An integrated box body based on a two-stage supercharging system according to claim 1 or 2, characterized in that: The mixed gas outlet (30) is correspondingly arranged with the low-pressure stage intercooler mounting port (22).

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