A turbine pump housing

Abstract

The utility model discloses a turbine pump casing, including outer casing and inner casing, and the inner casing inserts the inside of outer casing, and the outer casing includes the liquid inlet and liquid outlet of being located at the outside, and the liquid inlet, liquid chamber, liquid chamber and liquid outlet are communicated, which are formed between the outer casing and the inner casing. The utility model discloses the mode of the outer casing wrapping the inner casing, can realize the cooling flow passage design of casing inside, need not to adopt the external flow channel, greatly reduces the volume of turbine pump whole.

Description

Technical Field

[0001] This utility model relates to a turbopump structure, and more specifically, to a turbopump housing. Background Technology

[0002] With the development of aerospace technology, various rockets and spacecraft are developing towards high performance, lightweight, and reusability. At the same time, more stringent requirements are being placed on aerospace propulsion systems and spacecraft fluid supply systems, requiring them to have higher efficiency, lighter weight, smaller size, and stronger adaptability to large operating conditions.

[0003] Turbopumps are an indispensable part of aerospace engines. Due to the working environment of the engine, turbopumps not only need to withstand high temperatures, but also need to be cooled. Currently, external cooling channels are used to cool the outer surface of the turbopump housing. Although this method can achieve the cooling effect, it increases the overall size of the turbopump, which is not conducive to lightweight and compact design. Therefore, there is an urgent need to improve this method. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a turbopump housing. By wrapping the inner housing with the outer housing, the cooling channel design inside the housing can be realized without the need for an external channel, which greatly reduces the overall size of the turbopump.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a turbine pump housing, comprising an outer shell and an inner shell, wherein the inner shell is inserted into the outer shell, the outer shell includes an inlet and an outlet disposed on the outside, an inlet cavity and an outlet cavity are formed between the outer shell and the inner shell, and the inlet, inlet cavity, outlet cavity and outlet cavity are connected.

[0006] Furthermore, the outer shell includes a first channel, and the inner shell includes a second channel. The first channel is connected to the liquid inlet and the liquid inlet chamber, respectively, and the second channel is connected to the liquid inlet chamber and the liquid outlet chamber, respectively.

[0007] Furthermore, both the first channel and the second channel are inclined, and the inclination angles of the first channel and the second channel are the same.

[0008] Furthermore, the outer shell includes a first cylindrical body, and the inner shell includes a second cylindrical body. The second cylindrical body has a fourth annular platform and a seventh annular platform at its two ends, respectively. The outer walls of the fourth annular platform and the seventh annular platform abut against the inner wall of the first cylindrical body to form a liquid outlet cavity.

[0009] Furthermore, the first cylindrical body is provided with a second shoulder, and the lower part of the seventh annular platform abuts against the interior of the second shoulder.

[0010] Furthermore, the first cylinder has a first shoulder inside, the fourth annular platform has a fifth annular platform below it, the fifth annular platform has a sixth annular platform below it, the lower part of the fifth annular platform abuts against the upper part of the first shoulder to form a liquid inlet cavity, and the sixth annular platform is inserted into the inner wall of the first shoulder.

[0011] Furthermore, the second cylinder is provided with a plurality of raised ribs evenly distributed along its axis on its periphery, the second channel is disposed within the raised ribs, and the sidewall of the second channel is isolated from the sidewall of the liquid outlet chamber by the raised ribs.

[0012] Furthermore, the first cylinder has a first annular platform at one end, and the second cylinder has a third annular platform at the end extending beyond the outer shell. An annular groove is provided between the third annular platform and the seventh annular platform. The upper part of the first annular platform abuts against the lower part of the third annular platform. The first annular platform and the third annular platform are fixed by bolts. The inner wall of the first annular platform seals the opening outside the annular groove.

[0013] Furthermore, the surface of the seventh annular platform is provided with multiple flow holes, which are respectively connected to the annular groove and the liquid outlet chamber. The other end of the second channel is connected to the annular groove. The liquid inlet, the first channel, the liquid inlet chamber, the multiple second channels, the annular groove, the multiple flow holes, the liquid outlet chamber and the liquid outlet form a cooling flow channel.

[0014] Furthermore, a second annular platform is provided at the other end of the first cylinder, and a heat dissipation fin is provided on the outside of the first cylinder near the second annular platform. The heat dissipation fin includes multiple first heat dissipation fins spaced apart along their length direction. Multiple first heat dissipation fins are connected by multiple second heat dissipation fins evenly distributed along the axis of the first cylinder, and multiple heat dissipation grooves are formed between the first heat dissipation fins and the second heat dissipation fins.

[0015] In summary, this utility model has the following beneficial effects:

[0016] During operation, coolant enters through the inlet, fills the inlet chamber after passing through a first channel, and then enters multiple second channels. After passing through the second channels, the coolant enters the annular groove and collects, then flows back through the flow holes into the outlet chamber, finally exiting from the outlet. This achieves the design of an internal cooling channel, greatly improving the cooling effect. Furthermore, the internal cooling channel is achieved through the cooperation of the outer shell and the inner shell. The channel structure is simple, allowing the outer shell and the inner shell to be directly cast, simplifying the manufacturing process and reducing costs. This solves the problem that some complex internal channels can only be manufactured by 3D printing, welding, or other methods to produce the outer shell and the inner shell, resulting in high costs and short lifespans. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0018] Figure 2 This is a cross-sectional view of this embodiment;

[0019] Figure 3 This is a schematic diagram of the outer shell structure;

[0020] Figure 4 This is a schematic diagram of the inner shell structure.

[0021] Reference numerals: 1. Outer shell; 11. First cylinder; 12. First annular platform; 13. Second annular platform; 14. Heat dissipation fin; 141. First heat dissipation fin; 142. Second heat dissipation fin; 143. Heat dissipation groove; 15. Liquid inlet; 16. First channel; 17. First shoulder; 18. Second shoulder; 19. Liquid outlet; 2. Inner shell; 21. Second cylinder; 22. Third annular platform; 23. Fourth annular platform; 24. Fifth annular platform; 25. Sixth annular platform; 26. Rib; 261. Second channel; 27. Seventh annular platform; 271. Flow hole; 28. Annular groove; 3. Liquid inlet chamber; 4. Liquid outlet chamber. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 3 As shown, this embodiment discloses a turbine pump housing, including an outer shell 1 and an inner shell 2. The inner shell 2 is inserted into the outer shell 1 to form an inlet chamber 3 and an outlet chamber 4. Specifically, the outer shell 1 includes a first cylinder 11, and the inner shell 2 includes a second cylinder 21. The second cylinder 21 has a fourth annular platform 23 and a seventh annular platform 27 at its two ends, respectively. The outer walls of the fourth annular platform 23 and the seventh annular platform 27 abut against the inner wall of the first cylinder 11. The first cylinder 11 has a second shoulder 18 inside, and the lower part of the seventh annular platform 27 abuts against the interior of the second shoulder 18 to form the outlet chamber 4. The first cylinder 11 has a first shoulder 17 inside, and the lower part of the fourth annular platform 23 has a fifth annular platform 24. The lower part of the fifth annular platform 24 has a sixth annular platform 25. The lower part of the fifth annular platform 24 abuts against the upper part of the first shoulder 17 to form the inlet chamber 3. The sixth annular platform 25 is inserted into the inner wall of the first shoulder 17.

[0024] like Figure 2As shown, the engagement of the fourth annular platform 23 with the inner wall of the first cylinder 11, the engagement of the fifth annular platform 24 with the first shoulder 17, the engagement of the sixth annular platform 26 with the first shoulder 17, and the engagement of the seventh annular platform 27 with the second shoulder 18 can achieve the sealing of the inlet chamber 3 and the outlet chamber 4, and prevent the coolant in the inlet chamber 3 from entering the turbine mounting area. To improve the sealing effect, metal sealing rings, metal sealing gaskets, and other metal parts for sealing (not shown in the figure) can be installed in the corresponding mating areas.

[0025] The outer shell 1 includes an external liquid inlet 15 and an external liquid outlet 19, which are located on the same side and are respectively connected to the liquid inlet pipe and liquid outlet pipe of the external cooling pipe. The outer shell 1 and the inner shell 2 are connected by the liquid inlet 15, the liquid inlet cavity 3, the liquid outlet cavity 4, and the liquid outlet 19. Specifically, the outer shell 1 includes a first channel 16, and the inner shell 2 includes a second channel 261. The first channel 16 connects the liquid inlet 15 and the liquid inlet cavity 3, and the second channel 261 connects the liquid inlet cavity 3 and the liquid outlet cavity 4. The second cylinder 21 has a plurality of ribs 26 evenly distributed along its axis on its periphery. The second channel 261 is disposed within the ribs 26, and the sidewall of the second channel 261 is isolated from the sidewall of the liquid outlet cavity 4 by the ribs 26. One end of the first cylinder 11 is provided with a first annular platform 12, and the second cylinder 21 extends beyond the outer shell. One end of the housing 1 is provided with a third annular platform 22. An annular groove 28 is provided between the third annular platform 22 and the seventh annular platform 27. The upper part of the first annular platform 12 abuts against the lower part of the third annular platform 22. The first annular platform 12 and the third annular platform 22 are fixed by bolts. A metal sealing gasket can also be provided between the first annular platform 12 and the third annular platform 22 to improve the sealing effect of the annular groove 28. The inner wall of the first annular platform 12 seals the opening outside the annular groove 28. The surface of the seventh annular platform 27 is provided with a plurality of flow holes 271. The flow holes 271 are respectively connected to the annular groove 28 and the liquid outlet 4. The other end of the second channel 261 is connected to the annular groove 28. The liquid inlet 15, the first channel 16, the liquid inlet 3, the plurality of second channels 261, the annular groove 28, the plurality of flow holes 271, the liquid outlet 4 and the liquid outlet 19 form a cooling flow channel.

[0026] During operation, the coolant enters through the inlet 15, passes through a first channel 16, and fills the inlet chamber 3. The coolant in the inlet chamber 3 then enters multiple second channels 261. After passing through the second channels 261, the coolant enters the annular groove 28 and collects. Then, it flows back through the flow holes 271 into the outlet chamber 4 and finally flows out from the outlet 19. This achieves the design of the built-in cooling channel, which greatly improves the cooling effect. The built-in cooling channel is achieved through the cooperation of the outer shell 1 and the inner shell 2. The channel structure is simple, which allows the outer shell 1 and the inner shell 2 to be directly cast. The manufacturing method is simple and the cost is low. This solves the problem that some complex built-in channels can only be manufactured by 3D printing, welding, etc., which leads to high cost and short life.

[0027] The first channel 16 and the second channel 261 are both inclined, and the inclination angles of the first channel 16 and the second channel 261 are the same. This design facilitates the processing of the first channel 16 and the second channel 261.

[0028] The other end of the first cylindrical body 11 is provided with a second annular platform 13. The outer side of the first cylindrical body 11 near the second annular platform 13 is provided with heat dissipation fins 14. The heat dissipation fins 14 include multiple first heat dissipation fins 141 spaced apart along their length direction. Multiple first heat dissipation fins 141 are connected by multiple second heat dissipation fins 142 evenly distributed along the axis of the first cylindrical body 11. Multiple heat dissipation grooves 143 are formed between the first heat dissipation fins 141 and the second heat dissipation fins 142. By providing heat dissipation fins 14 on the outer wall of the first cylindrical body 11, the physical heat dissipation effect of the outer shell 1 can be improved.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A turbine pump housing, characterized in that, It includes an outer shell (1) and an inner shell (2), the inner shell (2) being inserted into the outer shell (1). The outer shell (1) includes an inlet (15) and an outlet (19) located on the outside. An inlet cavity (3) and an outlet cavity (4) are formed between the outer shell (1) and the inner shell (2). The inlet (15), the inlet cavity (3), the outlet cavity (4) and the outlet (19) are connected.

2. A turbine pump housing according to claim 1, characterized in that, The outer shell (1) includes a first channel (16), and the inner shell (2) includes a second channel (261). The first channel (16) is connected to the liquid inlet (15) and the liquid inlet chamber (3), respectively, and the second channel (261) is connected to the liquid inlet chamber (3) and the liquid outlet chamber (4), respectively.

3. A turbine pump housing according to claim 2, characterized in that, The first channel (16) and the second channel (261) are both inclined, and the inclination angles of the first channel (16) and the second channel (261) are the same.

4. A turbine pump housing according to claim 2, characterized in that, The outer shell (1) includes a first cylinder (11), and the inner shell (2) includes a second cylinder (21). The second cylinder (21) has a fourth annular platform (23) and a seventh annular platform (27) at both ends. The outer walls of the fourth annular platform (23) and the seventh annular platform (27) abut against the inner wall of the first cylinder (11) to form a liquid outlet cavity (4).

5. A turbine pump housing according to claim 4, characterized in that, The first cylindrical body (11) has a second shoulder (18) inside, and the lower part of the seventh annular platform (27) abuts against the interior of the second shoulder (18).

6. A turbine pump housing according to claim 4, characterized in that, The first cylindrical body (11) has a first shoulder (17) inside, the fourth annular platform (23) has a fifth annular platform (24) at its lower part, the fifth annular platform (24) has a sixth annular platform (25) at its lower part, the lower part of the fifth annular platform (24) abuts against the upper part of the first shoulder (17) to form a liquid inlet cavity (3), and the sixth annular platform (25) is inserted into the inner wall of the first shoulder (17).

7. A turbine pump housing according to claim 4, characterized in that, The second cylinder (21) has a plurality of raised ribs (26) evenly distributed along its axis on its periphery. The second channel (261) is located inside the raised ribs (26). The side wall of the second channel (261) is isolated from the side wall of the liquid outlet chamber (4) by the raised ribs (26).

8. A turbine pump housing according to claim 7, characterized in that, The first cylindrical body (11) has a first annular platform (12) at one end, and the second cylindrical body (21) has a third annular platform (22) at one end extending beyond the outer shell (1). An annular groove (28) is provided between the third annular platform (22) and the seventh annular platform (27). The upper part of the first annular platform (12) abuts against the lower part of the third annular platform (22). The first annular platform (12) and the third annular platform (22) are fixed by bolts. The inner wall of the first annular platform (12) seals the opening outside the annular groove (28).

9. A turbine pump housing according to claim 8, characterized in that, The surface of the seventh annular platform (27) is provided with multiple flow holes (271), which are respectively connected to the annular groove (28) and the liquid outlet (4). The other end of the second channel (261) is connected to the annular groove (28). The liquid inlet (15), the first channel (16), the liquid inlet (3), the multiple second channels (261), the annular groove (28), the multiple flow holes (271), the liquid outlet (4) and the liquid outlet (19) form a cooling flow channel.

10. A turbine pump housing according to claim 4, characterized in that, The first cylindrical body (11) has a second annular platform (13) at the other end. The first cylindrical body (11) has a heat dissipation fin (14) near the second annular platform (13) on its outer side. The heat dissipation fin (14) includes multiple first heat dissipation fins (141) spaced apart along its length. Multiple first heat dissipation fins (141) are connected by multiple second heat dissipation fins (142) evenly distributed along the axis of the first cylindrical body (11). Multiple heat dissipation grooves (143) are formed between the first heat dissipation fins (141) and the second heat dissipation fins (142).

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