An integrated water cooled shell

Abstract

The utility model relates to an integrated water -cooling pressure shell, including pressure shell body, air inlet, air outlet and compressed gas flow channel, the top middle part of pressure shell body is opened with air inlet, the bottom inboard of pressure shell body is opened with compressed gas flow channel, the side of pressure shell body is opened with air outlet, compressed gas flow channel is located the bottom outboard of air inlet, and the inside diameter of the side of compressed gas flow channel towards air outlet increases gradually, the water -cooling flow channel is opened in the pressure shell body between air inlet and compressed gas flow channel, and the water -cooling inlet and water -cooling outlet that are connected with water -cooling flow channel are opened on the pressure shell body. The utility model integrates part or all functions of intercooler to pressure shell body, cancels independent intercooler and complex connecting pipeline, greatly reduces the volume and weight of whole compression / pressure increasing system, makes structure more compact.

Description

Technical Field

[0001] This utility model relates to the technical field of gas compression and cooling, and in particular to an integrated water-cooled compressor housing, specifically to a compressor housing (volute) of a centrifugal compressor or blower with an integrated cooling water circulation channel. Background Technology

[0002] Cooling requirements for compressed gases: In centrifugal compressors, turbochargers, or high-pressure centrifugal blowers, the temperature of the gas increases significantly after being compressed by the impeller (i.e., high-temperature gas is produced).

[0003] If high-temperature gas is directly fed into subsequent systems (such as the intake manifold of an internal combustion engine or industrial processes), it will lead to problems such as decreased efficiency, increased risk of knocking, or process instability.

[0004] The shortcomings of traditional cooling solutions: The current mainstream solution is to install a separate intercooler / aftercooler. This means: Complex structure and large size: The independent intercooler requires additional space, connecting pipes, and mounting brackets, which increases the complexity and size of the entire system.

[0005] Energy loss and response delay: During the process of gas flowing from the pressure vessel to the independent intercooler, the pipeline is relatively long, resulting in certain pressure and heat losses, and may increase the system's response delay to changes in operating conditions.

[0006] Heat dissipation efficiency bottleneck: Intercoolers are usually air-cooled or water-cooled, but their layout is limited, making it difficult to achieve efficient cooling immediately at the highest temperature point right after the compression process ends.

[0007] The heat dissipation limitations of the pressure chamber itself: The main function of traditional pressure chambers is to collect and guide gas. They usually rely on natural convection or simple heat dissipation through surface area, and their cooling capacity is very limited, which cannot meet the need to effectively cool down high-temperature gas.

[0008] In existing technologies, high-temperature compressed gases rely on independent intercoolers for cooling, resulting in large system size, complex structure, and high cost, while there is still room for improvement in cooling efficiency and response speed.

[0009] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create an integrated water-cooled pressure shell that would have greater industrial application value. Utility Model Content

[0010] To solve the above-mentioned technical problems, the purpose of this utility model is to provide an integrated water-cooled pressure shell.

[0011] To achieve the above objectives, the present invention adopts the following technical solution: An integrated water-cooled pressure shell includes a pressure shell body, an air inlet, an air outlet, and a compressed gas flow channel; An air inlet is provided at the top center of the pressure shell body, a compressed gas flow channel is provided on the bottom inner side of the pressure shell body, and an air outlet is provided on the side of the pressure shell body. The compressed gas flow channel is located on the bottom outer side of the air inlet, and the inner diameter of the compressed gas flow channel increases sequentially on the side facing the air outlet. A water-cooled channel is provided in the pressure shell body between the air inlet and the compressed gas flow channel, and a water-cooled inlet and a water-cooled outlet are respectively connected to the water-cooled channel on the pressure shell body.

[0012] As a further improvement of this utility model, an interface step is provided on the pressure shell body on the side of the air inlet, and both the water-cooled inlet and the water-cooled outlet are opened on the interface step.

[0013] As a further improvement of this utility model, an upper connecting flange for the pressure shell is provided on the top of the pressure shell body outside the air inlet, and a lower connecting flange for the pressure shell is provided on the bottom of the pressure shell body outside the compressed gas flow channel.

[0014] As a further improvement of this utility model, a pressure shell side connecting flange is provided on the pressure shell body outside the air outlet.

[0015] As a further improvement of this utility model, a first plug is provided on the pressure shell body on one side of the compressed gas flow channel, and a second plug is provided on the pressure shell body on one side of the water cooling flow channel.

[0016] As a further improvement of this utility model, the pressure shell body includes an inner wall, a middle wall and an outer wall from the inside to the outside. The air inlet is located on the inner side of the inner wall, the water cooling channel is located between the inner wall and the middle wall, and the compressed gas channel is located between the middle wall and the outer wall.

[0017] As a further improvement of this utility model, a high-temperature resistant and corrosion-resistant coating is applied to the inner wall surface that comes into contact with high-temperature gas, and a heat insulation layer is provided on the outer side of the outer wall.

[0018] As a further improvement of this utility model, the air inlet has a flow channel structure that is wide at the top and bottom and narrow in the middle, and both the compressed gas flow channel and the water cooling flow channel are annular flow channel structures.

[0019] As a further improvement of this utility model, the water-cooling channel is a top-down spiral channel structure.

[0020] By means of the above solution, this utility model has at least the following advantages: Highly integrated structure: Some or all of the functions of the intercooler are integrated into the compressor housing, eliminating the need for a separate intercooler and complex connecting pipes, which greatly reduces the size and weight of the entire compression / boosting system and makes the structure more compact.

[0021] High and rapid cooling efficiency: Cooling water flows through the pressure shell area where the gas temperature is highest and the compression process has just ended, and can immediately remove heat, providing a more efficient and faster cooling effect.

[0022] Reduced system costs: The reduction of independent components and complex installation procedures helps to lower the overall system manufacturing cost and installation difficulty.

[0023] Reduced pressure loss: Shorter gas flow path avoids pressure loss caused by long pipelines, which helps improve the efficiency of the entire system.

[0024] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the following are the preferred embodiments of this utility model and are described in detail with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of an integrated water-cooled pressure shell according to this utility model; Figure 2 yes Figure 1 A structural diagram of the other side; Figure 3 yes Figure 1 A schematic diagram of the first cross-sectional structure; Figure 4 yes Figure 1 The second cross-sectional structural diagram.

[0027] The meanings of the labels in the figures are as follows.

[0028] 1. Compression housing body; 2. Air inlet; 3. Air outlet; 4. Interface step; 5. Water-cooled inlet; 6. Water-cooled outlet; 7. Upper connecting flange of compression housing; 8. Lower connecting flange of compression housing; 9. First plug; 10. Second plug; 11. Compressed gas flow channel; 12. Water-cooled flow channel; 13. Inner wall; 14. Middle wall; 15. Outer wall. Detailed Implementation

[0029] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] The first embodiment of this utility model: like Figures 1-4 As shown, an integrated water-cooled pressure shell of this embodiment includes a pressure shell body 1, an air inlet 2, an air outlet 3, and a compressed gas flow channel 11.

[0032] An air inlet 2 is provided at the top center of the pressure shell body 1, a compressed gas flow channel 11 is provided on the bottom inner side of the pressure shell body 1, and an air outlet 3 is provided on the side of the pressure shell body 1. The compressed gas flow channel 11 is located on the bottom outer side of the air inlet 2, and the inner diameter of the compressed gas flow channel 11 increases sequentially on the side facing the air outlet 3.

[0033] A water-cooled channel 12 is provided inside the pressure shell body 1 between the air inlet 2 and the compressed gas flow channel 11, and a water-cooled inlet 5 and a water-cooled outlet 6 are respectively connected to the water-cooled flow channel 12 on the pressure shell body 1.

[0034] An interface step 4 is provided on the pressure shell body 1 on one side of the air inlet 2, and the water-cooled inlet 5 and the water-cooled outlet 6 are both opened on the interface step 4.

[0035] A pressure shell upper connecting flange 7 is provided on the top of the pressure shell body 1 outside the air inlet 2, a pressure shell lower connecting flange 8 is provided on the bottom of the pressure shell body 1 outside the compressed gas flow channel 11, and a pressure shell side connecting flange is provided on the pressure shell body 1 outside the air outlet 3.

[0036] A first plug 9 is provided on the pressure shell body 1 on one side of the compressed gas flow channel 11, and a second plug 10 is provided on the pressure shell body 1 on one side of the water cooling flow channel 12.

[0037] The pressure shell body 1 includes an inner wall 13, an intermediate wall 14 and an outer wall 15 from the inside to the outside. The air inlet 2 is located inside the inner wall 13, the water cooling channel 12 is located between the inner wall 13 and the intermediate wall 14, and the compressed gas channel 11 is located between the intermediate wall 14 and the outer wall 15.

[0038] The inner wall 13, the surface in contact with high-temperature gas, is coated with a high-temperature resistant and corrosion-resistant coating, and a heat insulation layer is provided on the outer side of the outer wall 15. High-temperature resistant and corrosion-resistant coating: 0.2mm thick CERAL114 coating, cured at 200℃ / 2h; Heat insulation layer: 4mm thick polyimide aerogel.

[0039] The air inlet 2 has a flow channel structure that is wide at the top and bottom and narrow in the middle. The compressed gas flow channel 11 and the water cooling flow channel 12 are both annular flow channel structures, and the water cooling flow channel 12 is a spiral flow channel structure from top to bottom.

[0040] The integrated structure with three walls and two flow channels: The pressure shell body includes an inner wall, a middle wall and an outer wall from the inside to the outside, forming a unique sandwich structure.

[0041] The air inlet is located at the top center of the pressure shell body, and its flow channel penetrates the inner wall.

[0042] The water-cooled flow channel is located between the inner wall and the middle wall, forming an annular cooling jacket surrounding the air intake. This water-cooled flow channel is preferably a top-down spiral flow channel structure, and is connected to the external cooling system through a water-cooled inlet and a water-cooled outlet.

[0043] The compressed gas flow channel is located between the middle wall and the outer wall. It is also an annular flow channel structure. Its inlet is located on the outer side of the bottom of the air inlet, and its outlet is connected to the air outlet. The inner diameter of the flow channel increases sequentially towards the air outlet, forming a standard volute-shaped diffuser structure.

[0044] Interface and sealing design: An interface step is provided on the pressure shell body to centrally arrange the water cooling inlet and water cooling outlet, which facilitates the connection of external pipelines.

[0045] A first plug and a second plug are respectively installed at the ends of the compressed gas flow channel and the water cooling flow channel to seal the process holes after casting or machining, ensuring the airtightness of the flow channels.

[0046] The pressure shell is provided with an upper connection flange, a lower connection flange, and a side connection flange at the top, bottom, and sides, respectively, for connecting to the impeller housing, drive unit, and downstream pipeline.

[0047] Surface treatment: The inner wall surface in contact with high-temperature gas is coated with a high-temperature resistant and corrosion-resistant coating to protect the base material and extend its service life.

[0048] An insulation layer is installed on the outer side of the outer wall to reduce heat loss to the surrounding environment, improve cooling efficiency, and enhance the safety of the working environment.

[0049] The second embodiment of this utility model: like Figures 1-4As shown in this embodiment, an integrated water-cooled pressure shell is provided. The pressure shell body 1 of this embodiment is a component integrally formed by metal casting (such as aluminum alloy casting).

[0050] Structural details: Airflow path: High-temperature compressed gas enters through the top inlet 2. Inlet 2 is designed as a Venturi-shaped structure, wider at the top and bottom and narrower in the middle, which helps stabilize and accelerate the gas. The gas then enters the compressed gas flow channel 11. This channel is a spiral channel located between the middle wall 14 and the outer wall 15. Its cross-sectional area gradually increases as it flows towards the outlet 3, converting the gas's kinetic energy into pressure energy, completing the diffusion process, and finally exiting through the side outlet 3.

[0051] Cooling Path: Coolant (typically a mixture of water and ethylene glycol) is pumped in through water-cooling inlet 5. Water-cooling inlet 5 and water-cooling outlet 6 are centrally located on interface step 4, a design that allows external water pipes to be connected from one direction, resulting in a neat layout. The coolant enters water-cooling channel 12, a spiral channel located between inner wall 13 and intermediate wall 14. This channel tightly surrounds the intake duct and adheres to the inner wall of compressed gas channel 11. As the coolant flows through the spiral channel, it effectively absorbs heat conducted from inner wall 13 and intermediate wall 14, thus effectively cooling the hottest gas just entering the pressure chamber. After absorbing heat, the coolant finally flows out through water-cooling outlet 6 and enters the external radiator to complete the thermal cycle.

[0052] Manufacturing and Sealing: The first plug 9 is used to seal the process opening at the end of the compressed gas flow channel 11, and the second plug 10 is used to seal the process opening at the end of the water-cooled flow channel 12. These plugs are sealed by threads or interference fits, ensuring the independence and sealing of the two flow channels.

[0053] Protection and heat insulation: The inner surface of the inner wall 13 is coated with a ceramic-based composite coating as a high-temperature resistant and corrosion-resistant coating to resist oxidation and corrosion from high-temperature exhaust gases. The outer surface of the outer wall 15 is covered with ceramic fiber cotton as a heat insulation layer to prevent the outer shell temperature from becoming too high, protect surrounding components, and improve the working environment.

[0054] The working process of this embodiment: In this embodiment, the pressure shell body 1 is installed on the turbocharger, the upper connecting flange 7 of the pressure shell is connected to the turbine housing, and the side connecting flange of the pressure shell is connected to the engine intake pipe.

[0055] When the engine is running, the high-temperature exhaust gas drives the turbine, which in turn drives the coaxial impeller to rotate, compressing fresh air and continuously feeding it into the pressure shell from the air inlet 2.

[0056] At the same time, the engine's cooling circulation system starts working, and coolant is pumped from the water-cooled inlet 5 into the water-cooled flow channel 12.

[0057] As the high-temperature compressed gas flows through the compressed gas channel 11, its heat is continuously transferred through the intermediate wall 14 and the inner wall 13 to the coolant that flows spirally inside it.

[0058] The cooled gas has a significantly lower temperature and increased density, and flows out from outlet 3 into the engine cylinder, thereby improving the engine's charging efficiency and combustion performance.

[0059] The coolant that has absorbed heat flows out from the water-cooling outlet 6, is cooled by the cooling fan in the external radiator, and then its temperature drops. It then circulates back to the water-cooling inlet 5, and so on, to achieve continuous cooling.

[0060] This embodiment successfully embeds the cooling function into the core of the pressure shell through an innovative three-layer wall and dual-flow channel integrated design, achieving a high degree of synergy between structure, aerodynamics and thermal management, and its overall performance far exceeds that of traditional pressure shell and independent intercooler solutions.

[0061] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0062] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An integrated water-cooled pressure shell, comprising a pressure shell body (1), an air inlet (2), an air outlet (3), and a compressed gas flow channel (11). Its features are: An air inlet (2) is provided at the top center of the pressure shell body (1), a compressed gas flow channel (11) is provided on the bottom inner side of the pressure shell body (1), and an air outlet (3) is provided on the side of the pressure shell body (1). The compressed gas flow channel (11) is located on the bottom outer side of the air inlet (2), and the inner diameter of the compressed gas flow channel (11) facing the air outlet (3) increases sequentially. A water-cooled channel (12) is provided in the pressure shell body (1) between the air inlet (2) and the compressed gas flow channel (11), and a water-cooled inlet (5) and a water-cooled outlet (6) are respectively connected to the water-cooled channel (12) on the pressure shell body (1).

2. The integrated water-cooled pressure shell as described in claim 1, characterized in that, An interface step (4) is provided on the pressure shell body (1) on one side of the air inlet (2), and the water-cooled inlet (5) and water-cooled outlet (6) are both opened on the interface step (4).

3. The integrated water-cooled pressure shell as described in claim 1, characterized in that, A pressure shell upper connecting flange (7) is provided on the top of the pressure shell body (1) outside the air inlet (2), and a pressure shell lower connecting flange (8) is provided on the bottom of the pressure shell body (1) outside the compressed gas flow channel (11).

4. The integrated water-cooled pressure shell as described in claim 1, characterized in that, A pressure shell side connecting flange is provided on the pressure shell body (1) outside the air outlet (3).

5. An integrated water-cooled pressure shell as described in claim 1, characterized in that, A first plug (9) is provided on the pressure shell body (1) on one side of the compressed gas flow channel (11), and a second plug (10) is provided on the pressure shell body (1) on one side of the water cooling flow channel (12).

6. An integrated water-cooled pressure shell as described in claim 1, characterized in that, The pressure shell body (1) includes an inner wall (13), a middle wall (14) and an outer wall (15) from the inside to the outside. The air inlet (2) is located inside the inner wall (13). The water cooling channel (12) is located between the inner wall (13) and the middle wall (14). The compressed gas channel (11) is located between the middle wall (14) and the outer wall (15).

7. An integrated water-cooled pressure shell as described in claim 6, characterized in that, The inner wall (13) is coated with a high-temperature resistant and corrosion-resistant coating on the surface in contact with the high-temperature gas, and a heat insulation layer is provided on the outer side of the outer wall (15).

8. An integrated water-cooled pressure shell as described in claim 6, characterized in that, The air inlet (2) is a flow channel structure that is wide at the top and bottom and narrow in the middle. The compressed gas flow channel (11) and the water cooling flow channel (12) are both annular flow channel structures.

9. An integrated water-cooled pressure shell as described in claim 6, characterized in that, The water-cooled flow channel (12) is a spiral flow channel structure from top to bottom.

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