Volute assembly, turbine volute assembly and air compressor

Abstract

The utility model provides a volute assembly, a turbine volute assembly and an air compressor. The volute assembly comprises a volute, the volute is provided with an air inlet flow channel, an air outlet flow channel, an air inlet, an air outlet and a water collecting groove, air can enter the air inlet flow channel from the air inlet, air in the air inlet flow channel can enter the air outlet flow channel from the air outlet, the air outlet and the water collecting groove are both annular, the air outlet is formed in the inner side of the volute, and the water collecting groove is formed in the outer side of the volute. The water collecting tank is adjacent to the air outlet in the flowing direction of air in the air inlet flow channel, and an opening of the water collecting tank is communicated with the air inlet flow channel and faces the air inlet flow channel in the axial direction of the volute; and the adjusting device comprises a mounting ring and a plurality of adjusting blades, at least parts of the adjusting blades are located in the air inlet flow channel and are adjacent to the air outlet, and the mounting ring is mounted in the water collecting tank. Therefore, the volute assembly has the advantage that the probability that the adjusting device is frozen can be reduced conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of volutes, and in particular to a volute assembly, a turbine volute assembly and an air compressor. Background Art

[0002] With the development of hydrogen energy, fuel cell related technologies are constantly improving. For example, effectively improving the effective output power of the stack is the direction of efforts of relevant engineers. In addition to improving the power generation efficiency of the stack itself, reducing the power consumption of the stack system is also one of the effective paths. As one of the main power-consuming components of the system, the air compressor can better reduce the system power consumption by optimizing and improving the efficiency of the air compressor. In view of this, relevant engineers proposed to use the turbine to recycle the tail gas of the stack to reduce the power consumption of the air compressor. The scheme of using a variable cross-section diffuser during turbine recovery can ensure that the turbine has a high recovery efficiency at different speeds. In the related technology, the power generation principle of the hydrogen fuel cell system is that hydrogen and oxygen undergo an electrochemical reaction to generate water. The water and water vapor in the stack are discharged to the turbine along with the high-pressure gas. The condensed water of water and water vapor will remain in the variable cross-section adjustment mechanism. When the ambient temperature is below 0°C, the water will freeze and freeze the adjustable mechanism, resulting in the inability of the adjustable mechanism to act in time when starting the machine. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the embodiment of the utility model provides a volute assembly, a turbine volute assembly and an air compressor.

[0004] The volute assembly of the utility model embodiment includes:

[0005] A volute, the volute having an inlet flow channel, an outlet flow channel, an air inlet, an air outlet and a water collecting tank, gas can be passed into the inlet flow channel from the air inlet, and gas in the inlet flow channel can be passed into the outlet flow channel from the air outlet, the air outlet and the water collecting tank are both annular, the air outlet is opened on the inner side of the volute, the water collecting tank is adjacent to the air outlet in the flow direction of gas in the inlet flow channel, the opening of the water collecting tank is connected to the inlet flow channel, and the opening of the water collecting tank faces the inlet flow channel in the axial direction of the volute;

[0006] An adjusting device, the adjusting device comprises a mounting ring and a plurality of adjusting blades, the plurality of adjusting blades are arranged on the mounting ring at circumferential intervals, the adjusting blades can rotate relative to the mounting ring, at least part of the adjusting blades are located in the inlet flow channel and adjacent to the air outlet, the axial direction of the mounting ring and the extension direction of the rotation axis of the adjusting blades are consistent with the axial direction of the volute, the adjusting blades are used to adjust the exhaust angle of the air outlet, and the mounting ring is installed in the sump.

[0007] Therefore, the volute assembly according to the embodiment of the utility model has the advantage of reducing the probability of the regulating device being frozen.

[0008] In some embodiments, the water collecting tank includes a first wall surface and a second wall surface opposite to each other in the radial direction of the volute, the first wall surface and the second wall surface are both annular surfaces, and the first wall surface is arranged around the circumference of the second wall surface;

[0009] The outer annular surface of the mounting ring and the first wall define a first gap, the inner annular surface of the mounting ring and the second wall define a second gap, and the size of each of the first gap and the second gap in the radial direction of the volute is less than or equal to a first preset value.

[0010] In some embodiments, a concave drainage groove is provided on the first wall surface, the opening of the drainage groove is axially directed toward the inlet air passage of the volute, the drainage groove and the outer annular surface of the mounting ring are arranged opposite to each other in the radial direction of the volute, and the water collecting tank is connected with the inlet air passage through the drainage groove.

[0011] In some embodiments, the distance between the wall surface of the drainage groove and the outer annular surface of the mounting ring increases in the axial direction of the volute along the direction adjacent to the inlet flow passage;

[0012] A plurality of drainage grooves are formed on the first wall surface, and the plurality of drainage grooves are spaced apart in the circumferential direction.

[0013] In some embodiments, the drainage grooves are disposed on the top and the bottom of the first wall.

[0014] In some embodiments, a concave expansion groove is provided on the first wall surface, the expansion groove is annular, the axial direction of the expansion groove is consistent with the axial direction of the volute, and the expansion groove is connected to the drainage groove.

[0015] In some embodiments, the water collecting groove and a portion of the inlet flow passage adjacent to the air outlet are arranged in parallel in the axial direction of the volute.

[0016] The utility model also proposes a turbine volute assembly, comprising

[0017] A volute assembly, wherein the volute assembly is the volute assembly described above;

[0018] A turbine is rotatably disposed in a volute of the volute assembly, and the turbine and the volute define a turbine gas flow channel.

[0019] The utility model also proposes an air compressor, comprising

[0020] A turbine volute assembly, wherein the turbine volute assembly is the above-mentioned turbine volute assembly;

[0021] A motor, wherein the rotating shaft of the motor is connected to the turbine of the turbine volute assembly, and the housing of the motor is connected to the volute of the turbine volute assembly.

[0022] In some embodiments, the water collecting groove of the volute is located on a side of the inlet flow passage of the volute facing away from the motor in the axial direction of the volute. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of a volute according to an embodiment of the utility model.

[0024] Figure 2 It is a front view of the volute according to an embodiment of the utility model.

[0025] Figure 3 It is a cross-sectional view of a volute according to an embodiment of the utility model.

[0026] Figure 4 It is a cross-sectional view of an air compressor according to an embodiment of the utility model.

[0027] Figure 5 It is a cross-sectional view of a volute according to an embodiment of the utility model.

[0028] Figure numerals: 1. volute, 2. inlet flow channel, 3. outlet flow channel, 4. air inlet, 5. air outlet, 6. water collecting tank, 7. drain tank, 8. mounting ring, 9. adjusting blade, 10. turbine, 11. motor. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0030] The volute assembly of the utility model embodiment is described below with reference to the accompanying drawings. Figures 1 to 5 As shown, the volute assembly according to the embodiment of the utility model includes a volute 1 and an adjusting device.

[0031] The volute 1 has an inlet flow channel 2, an outlet flow channel 3, an air inlet 4, an air outlet 5 and a water collecting tank 6. The inlet flow channel 2 is spiral, and the gas can pass into the inlet flow channel 2 from the air inlet 4, and the gas in the inlet flow channel 2 can pass into the outlet flow channel 3 from the air outlet 5. The extension direction of the outlet flow channel 3 is consistent with the axial direction of the volute 1. The air outlet 5 and the water collecting tank 6 are both annular, and the air outlet 5 is opened on the inner side of the volute 1 (radially), and the water collecting tank 6 is adjacent to the air outlet 5 in the flow direction of the gas in the inlet flow channel 2. The opening of the water collecting tank 6 is connected with the inlet flow channel 2, and the opening of the water collecting tank 6 faces the inlet flow channel 2 in the axial direction of the volute 1.

[0032] The regulating device comprises a mounting ring 8 and a plurality of regulating blades 9. The plurality of regulating blades 9 are arranged on the mounting ring 8 at intervals along the circumferential direction, and the regulating blades 9 can rotate relative to the mounting ring 8. At least part of the regulating blades 9 is located in the inlet flow channel 2 and adjacent to the air outlet 5. The axial direction of the mounting ring 8 and the extending direction of the rotation axis of the regulating blades 9 are consistent with the axial direction of the volute 1. The regulating blades 9 are used to adjust the exhaust angle of the air outlet 5. The mounting ring 8 is installed in the sump 6.

[0033] According to the volute assembly of the embodiment of the utility model, a water collecting groove 6 is provided on the inner wall of the volute 1, and the regulating device is arranged in the water collecting groove 6, so that when condensed water enters the regulating device, it will gather in the water collecting groove 6. There is enough space in the water collecting groove 6 to allow cold water to flow, and under the action of gravity and airflow, it will finally gather at the bottom of the water collecting groove 6 along the wall surface, and the water gathered in the water collecting groove 6 will be discharged into the inlet air channel 2, thereby reducing the probability of the regulating device being frozen after collecting water.

[0034] Therefore, the volute assembly according to the embodiment of the utility model has the advantage of reducing the probability of the regulating device being frozen.

[0035] like Figures 1 to 5 As shown, in some embodiments, the water collecting tank 6 includes a first wall surface (outer peripheral wall surface) and a second wall surface (inner peripheral wall surface) relative to the volute 1 in the radial direction, the first wall surface and the second wall surface are both annular surfaces, and the first wall surface is arranged around the circumference of the second wall surface. Specifically, the first wall surface and the second wall surface define the opening of the water collecting tank 6.

[0036] The outer annular surface of the mounting ring 8 and the first wall define a first gap, and the inner annular surface of the mounting ring 8 and the second wall define a second gap, and the size of each of the first gap and the second gap in the radial direction of the volute 1 is less than or equal to a first preset value. The first gap and the second gap are small, thereby reducing the probability of condensed water entering the regulating device.

[0037] like Figures 1 to 5As shown, in some embodiments, a concave drainage groove 7 is provided on the first wall surface, and the opening of the drainage groove 7 faces the intake air duct 2 in the axial direction of the volute 1. The drainage groove 7 and the outer annular surface of the mounting ring 8 are arranged opposite to each other in the radial direction of the volute 1, and the water collecting trough 6 is connected with the intake air duct 2 through the drainage groove 7.

[0038] Specifically, the distance between the wall surface of the drainage groove 7 and the outer annular surface of the mounting ring 8 increases in the axial direction of the volute 1 in the direction adjacent to the inlet flow passage 2, so that the condensed water in the water collecting tank 6 can be easily discharged from the drainage groove 7 into the inlet flow passage 2. The axial direction of the volute 1 can be the left-right direction, and the left-right direction is shown by the arrows in the figure. For example, the axial direction of the volute 1 is the left-right direction, the opening of the drainage groove 7 faces the left side, and the distance between the wall surface of the drainage groove 7 and the outer annular surface of the mounting ring 8 increases to the left. The wall surface of the drainage groove 7 is (substantially) a spherical surface.

[0039] like Figures 1 to 5 As shown, in some embodiments, a plurality of drainage grooves 7 are provided on the first wall surface, and the plurality of drainage grooves 7 are spaced apart in the circumferential direction.

[0040] In some embodiments, the top and bottom of the first wall are provided with drainage grooves 7. Thus, after the volute 1 is changed in installation direction, there is a drainage groove 7 at the bottom of the first wall, so as to facilitate water discharge.

[0041] In some embodiments, a concave expansion groove is provided on the first wall, the expansion groove is annular, the axial direction of the expansion groove is consistent with the axial direction of the volute 1, and the expansion groove is connected to the drainage groove 7. The expansion groove can facilitate the accumulation of condensed water in the water collection groove 6, so as to facilitate discharge from the drainage groove 7.

[0042] In some embodiments, the water collecting groove 6 and a portion of the inlet flow passage 2 adjacent to the air outlet 5 are arranged in parallel in the axial direction of the volute 1. For example, the water collecting groove 6 and a portion of the inlet flow passage 2 adjacent to the air outlet 5 are arranged in parallel in the left-right direction.

[0043] The present invention further proposes a turbine volute assembly. The turbine volute assembly according to an embodiment of the present invention comprises a turbine 10 according to an embodiment of the present invention.

[0044] The turbine 10 is rotatably disposed in the volute 1 of the volute assembly, and the turbine 10 and the volute 1 define a turbine gas flow channel.

[0045] Therefore, the turbine volute assembly according to the embodiment of the utility model has the advantage of reducing the probability of the regulating device being frozen.

[0046] like Figure 4 As shown, the utility model further proposes an air compressor. The air compressor according to an embodiment of the utility model includes a turbine volute assembly and a motor 11 according to an embodiment of the utility model.

[0047] The rotating shaft of the motor 11 is connected to the turbine 10 of the turbine volute assembly, and the housing of the motor 11 is connected to the volute 1 of the turbine volute assembly.

[0048] Therefore, the air compressor according to the embodiment of the utility model has the advantage of reducing the probability of the regulating device being frozen.

[0049] In some embodiments, the water collecting tank 6 of the volute 1 is located on the side of the inlet flow passage 2 of the volute 1 facing away from the motor 11 in the axial direction of the volute 1. For example, the water collecting tank 6 is located on the right side of the inlet flow passage 2 of the volute 1, and the motor 11 is located on the left side of the volute 1.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0055] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A volute assembly, characterized in that: include: A volute, the volute having an inlet flow channel, an outlet flow channel, an air inlet, an air outlet and a water collecting tank, gas can be passed into the inlet flow channel from the air inlet, and gas in the inlet flow channel can be passed into the outlet flow channel from the air outlet, the air outlet and the water collecting tank are both annular, the air outlet is opened on the inner side of the volute, the water collecting tank is adjacent to the air outlet in the flow direction of gas in the inlet flow channel, the opening of the water collecting tank is connected to the inlet flow channel, and the opening of the water collecting tank faces the inlet flow channel in the axial direction of the volute; An adjusting device, the adjusting device comprises a mounting ring and a plurality of adjusting blades, the plurality of adjusting blades are arranged on the mounting ring at circumferential intervals, the adjusting blades can rotate relative to the mounting ring, at least part of the adjusting blades are located in the inlet flow channel and adjacent to the air outlet, the axial direction of the mounting ring and the extension direction of the rotation axis of the adjusting blades are consistent with the axial direction of the volute, the adjusting blades are used to adjust the exhaust angle of the air outlet, and the mounting ring is installed in the sump.

2. The volute assembly according to claim 1, characterized in that: The water collecting tank comprises a first wall surface and a second wall surface opposite to each other in the radial direction of the volute, the first wall surface and the second wall surface are both annular surfaces, and the first wall surface is arranged around the circumference of the second wall surface; The outer annular surface of the mounting ring and the first wall define a first gap, the inner annular surface of the mounting ring and the second wall define a second gap, and the size of each of the first gap and the second gap in the radial direction of the volute is less than or equal to a first preset value.

3. The volute assembly according to claim 2, characterized in that: An inwardly concave drainage groove is provided on the first wall surface, the opening of the drainage groove faces the inlet flow channel in the axial direction of the volute, the drainage groove and the outer ring surface of the mounting ring are arranged opposite to each other in the radial direction of the volute, and the water collecting tank is connected with the inlet flow channel through the drainage groove.

4. The volute assembly according to claim 3, characterized in that: The distance between the wall surface of the drainage groove and the outer annular surface of the mounting ring increases in the axial direction of the volute along the direction adjacent to the inlet flow passage; A plurality of drainage grooves are formed on the first wall surface, and the plurality of drainage grooves are spaced apart in the circumferential direction.

5. The volute assembly according to claim 4, characterized in that: The drainage grooves are provided at the top and the bottom of the first wall.

6. The volute assembly according to claim 3, characterized in that: The first wall surface is provided with an inwardly concave expansion groove, the expansion groove is annular, the axial direction of the expansion groove is consistent with the axial direction of the volute, and the expansion groove is connected to the drainage groove.

7. The volute assembly according to any one of claims 1 to 6, characterized in that: The water collecting groove and a portion of the inlet flow passage adjacent to the air outlet are arranged in parallel in the axial direction of the volute.

8. A turbine volute assembly, characterized in that: include A volute assembly, wherein the volute assembly is the volute assembly according to any one of claims 1 to 7; A turbine is rotatably disposed in a volute of the volute assembly, and the turbine and the volute define a turbine gas flow channel.

9. An air compressor, characterized in that: include A turbine volute assembly, wherein the turbine volute assembly is the turbine volute assembly according to claim 8; A motor, wherein the rotating shaft of the motor is connected to the turbine of the turbine volute assembly, and the housing of the motor is connected to the volute of the turbine volute assembly.

10. The air compressor according to claim 9, characterized in that: The water collecting groove of the volute is located on a side of the inlet flow passage of the volute facing away from the motor in the axial direction of the volute.

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