Thermodynamic device and thermodynamic power generation system

Abstract

The present application relates to the technical field of thermodynamic, and provide a kind of thermodynamic equipment and thermodynamic power generation system, thermodynamic equipment includes compressor intake cover, compressor impeller, turbine, diffuser, guider, shell, front rectifying part and rear rectifying part, and front rectifying part and the inner wall of shell form front gas collection cavity, and rear rectifying part and the inner wall of shell form rear gas collection cavity.Thermodynamic equipment when operating, compressor impeller will air be inhaled from the air inlet end of compressor intake cover and be pressed into front gas collection cavity along expansion passage, air is compressed in the process along the small size end to large size end, and the pressure of air increases;Air flows along the large size end of rear rectifying part to small size end in the process, the distance between shell and rear rectifying part increases, and high-temperature and high-pressure gas expands in rear gas collection cavity and then impacts turbine to rotate, wherein, the work done by high-temperature and high-pressure gas after expansion on turbine is greater than the work done by compressor impeller on air compression.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermodynamic technology, in particular to a thermodynamic device and a thermodynamic power generation system. BACKGROUND

[0002] The external combustion gas turbine and other external combustion or waste heat recovery thermodynamic devices based on the Brayton cycle can directly use air as the working medium. After being compressed by a compressor, the air is heated and warmed up in a working medium heating device, and then enters a turbine to expand and do work. The mechanical work drives the compressor and the load device in turn. The above-mentioned thermodynamic device is simple in design, and the working medium directly comes from the atmosphere and is discharged into the atmosphere, so it has good reliability and stability. However, the external combustion gas turbine and other external combustion or waste heat recovery thermodynamic devices based on the Brayton cycle in the related art mostly have one intake volute and one exhaust volute. The structure of the volute is complex, the production and assembly are difficult, and the utilization rate of the internal space of the device main body is low, which is inconvenient for production and assembly. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, the present application provides a thermodynamic device, a front rectifying component and a rear rectifying component are arranged in a shell, a front gas collecting cavity is formed between the shell and the front rectifying component, a rear gas collecting cavity is formed between the shell and the rear rectifying component, the front gas collecting cavity and the rear gas collecting cavity play the roles of pressure boosting and pressure reducing expansion, and there is no need to arrange a volute structure. The structure of the thermodynamic device is more compact, and the production and assembly are easier.

[0004] The present application also provides a thermodynamic power generation system.

[0005] According to the thermodynamic device provided by the first aspect of the present application, the shell is a cylindrical structure with through holes at both ends and forms an inlet and an outlet. The diffuser and the guide are arranged in the shell and are connected to the inner wall of the shell. The compressor impeller is arranged outside the inlet, and the turbine is arranged outside the outlet.

[0006] The compressor impeller and the turbine are connected by a connecting shaft, and the outer side of the connecting shaft is sleeved with a shaft sleeve.

[0007] The diffuser includes a first base connected to one end of the shaft sleeve close to the compressor impeller.

[0008] The guide includes a second base connected to one end of the shaft sleeve close to the turbine.

[0009] The shell is a cylindrical structure with through holes at both ends and forms an inlet and an outlet. The diffuser and the guide are arranged in the shell and are connected to the inner wall of the shell. The compressor impeller is arranged outside the inlet, and the turbine is arranged outside the outlet.

[0010] The compressor inlet cover is fixedly connected to the inlet of the shell, and the annular shell of the compressor inlet cover is wrapped around the outside of the compressor impeller in a non-contact manner, except for the inlet of the compressor inlet cover;

[0011] The front fairing is a gradually expanding cylindrical structure, and is sleeved outside the shaft sleeve, the small size end of the front fairing is connected to the first base body, the large size end of the front fairing is connected to the inner wall of the shell in a ring shape, a front gas collecting cavity is formed between the front fairing and the inner wall of the shell, the shell is formed with an exhaust port outside the shell which is communicated with the front gas collecting cavity, and the diffuser is provided with a diffuser passage outside the shell inlet which is communicated with the front gas collecting cavity;

[0012] The rear fairing is a gradually expanding cylindrical structure, and is sleeved outside the shaft sleeve, the small size end of the rear fairing is connected to the second base body, the large size end of the rear fairing is connected to the inner wall of the shell in a ring shape, a rear gas collecting cavity is formed between the rear fairing and the inner wall of the shell, the shell is formed with an inlet outside the shell which is communicated with the rear gas collecting cavity, and the guide vane is provided with a guide passage outside the shell outlet which is communicated with the rear gas collecting cavity.

[0013] According to one embodiment of the present application, the small size end of the gradually expanding cylindrical structure of the front fairing and the rear fairing is linearly transitioned to the large size end;

[0014] Alternatively, the small size end of the gradually expanding cylindrical structure of the front fairing and the rear fairing is transitioned to the large size end along a curved surface which is concave relative to the central axis of the connecting shaft;

[0015] Alternatively, the small size end of the gradually expanding cylindrical structure of the front fairing and the rear fairing is transitioned to the large size end along a curved surface which is convex relative to the central axis of the connecting shaft.

[0016] According to one embodiment of the present application, the first base body is provided with a first annular groove on the side facing the front fairing, and the small size end of the front fairing is provided with a first annular protrusion which is embedded in the first annular groove;

[0017] And / or, the second base body is provided with a second annular groove on the side facing the rear fairing, and the small size end of the rear fairing is provided with a second annular protrusion which is embedded in the second annular groove.

[0018] According to one embodiment of the present application, the large size end of the front fairing is provided with a third annular protrusion, the inner wall of the shell is formed with a third annular groove, and the third annular protrusion is embedded in the third annular groove;

[0019] And / or, the large size end of the rear rectifying component is provided with a fourth annular protrusion, and the inner wall of the shell is formed with a fourth annular groove, and the fourth annular protrusion is embedded in the fourth annular groove.

[0020] According to an embodiment of the present application, the shell comprises:

[0021] A front shell section is sleeved on the outside of the diffuser and the front rectifying component;

[0022] A rear shell section is sleeved on the outside of the rear rectifying component and the guider;

[0023] A ring-shaped connecting piece is arranged between the front shell section and the rear shell section, the third annular groove is formed between the pipe wall end of the front shell section and the ring-shaped connecting piece, the fourth annular groove is formed between the pipe wall end of the rear shell section and the ring-shaped connecting piece, and the front shell section, the ring-shaped connecting piece and the rear shell section are fixedly connected.

[0024] According to an embodiment of the present application, the pipe wall end of the front shell section towards the side of the ring-shaped connecting piece is provided with a first annular step, and the third annular groove is formed between the ring-shaped connecting piece and the first annular step;

[0025] And / or, the pipe wall end of the rear shell section towards the side of the ring-shaped connecting piece is provided with a second annular step, and the fourth annular groove is formed between the ring-shaped connecting piece and the second annular step.

[0026] According to an embodiment of the present application, the shell comprises:

[0027] The first shell and the second shell in parallel arrangement are in semicircular arc shape, the first shell and the second shell are adjacent to each other, two circular arc concave surfaces are formed between the first shell and the second shell, the diffuser, the front rectifying component, the rear rectifying component and the guider are arranged in the accommodating cavity, and an annular positioning groove is arranged on the cavity wall of the accommodating cavity.

[0028] An annular positioning piece is embedded in the annular positioning groove and sleeved on the outside of the shaft sleeve, the third annular groove is formed between the side of the annular positioning piece towards the front rectifying component and the groove wall of the annular positioning groove, and the fourth annular groove is formed between the side of the annular positioning piece towards the rear rectifying component and the other groove wall of the annular positioning groove.

[0029] According to an embodiment of the present application, the two sides of the annular positioning piece are formed with third annular steps, and the height of the third annular step is less than or equal to the thickness of the third annular protrusion and the thickness of the fourth annular protrusion.

[0030] According to one embodiment of the present application, the diffuser further comprises a plurality of first guide vanes, the plurality of first guide vanes being uniformly arranged between the first base body and the inner wall of the shell, and the diffuser passage being formed between any two adjacent first guide vanes.

[0031] The guider further comprises a plurality of second guide vanes, the plurality of second guide vanes being uniformly arranged between the second base body and the inner wall of the shell, and the guider passage being formed between any two adjacent second guide vanes.

[0032] According to one embodiment of the present application, the outflow angle of the second guide vanes is adjustable.

[0033] According to one embodiment of the present application, the first base body and the second base body are both disc structures, the disc edge of the first base body is smoothly connected with the small-size end of the front rectifier component, and the disc edge of the second base body is smoothly connected with the small-size end of the rear rectifier component.

[0034] According to one embodiment of the present application, the first base body and the second base body are both disc structures, the disc edge of the first base body is smoothly connected with the small-size end of the front rectifier component, and the disc edge of the second base body is smoothly connected with the small-size end of the rear rectifier component.

[0035] The one or more technical solutions in the present application have at least one of the following technical effects:

[0036] According to the embodiment of the first aspect of the present application, the thermodynamic device comprises a compressor impeller, a turbine, a diffuser, a guide, a shell, a connecting shaft, a shaft sleeve, a compressor air inlet cover, a front flow regulating component and a rear flow regulating component. The compressor impeller and the turbine are connected by the connecting shaft and rotate synchronously. The shaft sleeve is arranged outside the connecting shaft, and the compressor impeller, the connecting shaft and the turbine can rotate relative to the shaft sleeve. The diffuser comprises a first base connected to one end of the shaft sleeve close to the compressor impeller. The guide comprises a second base connected to one end of the shaft sleeve close to the turbine. The shell is a cylindrical structure with two ends through and forms an inlet and an outlet. The diffuser and the guide are arranged in the shell and connected to the inner wall of the shell. The compressor air inlet cover is fixedly connected to the inlet of the shell. The compressor impeller is arranged outside the inlet of the shell. The turbine is arranged outside the outlet of the shell. The front flow regulating component is a gradually expanding cylindrical structure and is arranged outside the shaft sleeve. The small size end of the front flow regulating component is connected to the first base. The large size end of the front flow regulating component is connected to the inner wall of the shell in a ring shape. The front flow regulating component and the inner wall of the shell form a front gas collecting cavity. The shell forms an exhaust port connected to the front gas collecting cavity along the outer part of the shell. The diffuser is provided with a diffuser passage connected to the front gas collecting cavity along the outside of the inlet of the shell. The rear flow regulating component is also a gradually expanding cylindrical structure and is arranged outside the shaft sleeve. The small size end of the rear flow regulating component is connected to the second base. The large size end of the rear flow regulating component is connected to the inner wall of the shell in a ring shape. The rear flow regulating component and the inner wall of the shell form a rear gas collecting cavity. The shell forms an air inlet connected to the rear gas collecting cavity along the outer part of the shell. The guide is provided with a guide passage connected to the rear gas collecting cavity along the outside of the outlet of the shell. When the thermodynamic device operates, the compressor impeller sucks in external air from the air inlet end of the compressor air inlet cover, compresses the air, and pressurizes the air into the front gas collecting cavity along the diffuser passage. The front gas collecting cavity is a gradually expanding structure. During the process of air flowing from the small size end to the large size end, the distance between the shell and the front flow regulating component decreases, the air is compressed, the pressure of the air increases, and the effect of volute structure can be achieved. The high pressure air flows out along the exhaust port. After the high pressure air flows out along the exhaust port, the high pressure air enters the external heat exchange device or the working medium heating device to exchange heat, forming high temperature and high pressure gas. The high temperature and high pressure gas enters the rear gas collecting cavity along the air inlet. The rear gas collecting cavity is a gradually expanding structure arranged in the opposite direction. During the process of air flowing from the large size end to the small size end of the rear flow regulating component, the distance between the shell and the rear flow regulating component increases. The high temperature and high pressure gas is depressurized, expanded and accelerated in the rear gas collecting cavity, and then forms a high speed airflow to impact the turbine to make the turbine rotate. When the turbine rotates, the compressor impeller rotates synchronously. Under the premise that the heat exchange device or the air heating device in the outside environment can provide sufficient heat energy, the work done by the high temperature and high pressure gas on the turbine after expansion is greater than the work done by the compressor impeller on the air compression. Therefore, the thermodynamic device can realize continuous recycling and utilization of heat energy. In the thermodynamic device, the front gas collecting cavity and the rear gas collecting cavity respectively play the roles of pressure increasing and pressure decreasing and expanding, and the volute structure is not needed, so the structure of the thermodynamic device is more simple, and the difficulty of production and assembly is reduced. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A schematic structural diagram of a first type of thermal power device provided in an embodiment of the present invention;

[0039] Figure 2 for Figure 1 A cross-sectional view along the vertical direction;

[0040] Figure 3 A schematic structural diagram of a second type of thermal power device provided in an embodiment of the present invention;

[0041] Figure 4 for Figure 3 A cross-sectional view along the vertical direction;

[0042] Figure 5 A schematic structural diagram of the thermal power equipment provided in an embodiment of the present invention, excluding the housing and the compressor inlet shroud;

[0043] Figure 6 A perspective view of a first type of front rectifier and rear rectifier provided in an embodiment of the present invention;

[0044] Figure 7 A front view of a first type of front rectifier and a rear rectifier provided in an embodiment of the present invention;

[0045] Figure 8 A perspective view of the second type of front rectifier and rear rectifier provided in an embodiment of the present invention;

[0046] Figure 9 This is a front view of the second type of front rectifier and rear rectifier provided in an embodiment of the present invention;

[0047] Figure 10 A perspective view of the third type of front rectifier and rear rectifier provided in an embodiment of the present invention;

[0048] Figure 11 This is a front view of a third type of front rectifier and rear rectifier provided in an embodiment of the present invention;

[0049] Figure 12 A schematic structural diagram of a diffuser provided in an embodiment of the present invention;

[0050] Figure 13 A schematic structural view of a guide provided for an embodiment of the present application;

[0051] Figure 14 A schematic structural view of a turbine provided for an embodiment of the present application;

[0052] Figure 15 A schematic structural view of a compressor impeller provided for an embodiment of the present application;

[0053] Figure 16 A schematic structural view of a compressor inlet cover provided for an embodiment of the present application;

[0054] Figure 17 A schematic structural view of relative positions of a front shell section, a rear shell section and a ring connecting piece when assembled provided for an embodiment of the present application;

[0055] Figure 18 A schematic structural view of relative positions of a first shell, a second shell and a ring positioning piece when assembled provided for an embodiment of the present application;

[0056] Figure 19 A schematic structural view of a first heat power equipment provided for an embodiment of the present application;

[0057] Figure 20 A schematic structural view of a second heat power equipment provided for an embodiment of the present application.

[0058] Reference signs:

[0059] 1, compressor impeller; 2, turbine; 3, connecting shaft; 4, shaft sleeve;

[0060] 5, diffuser; 51, first base body; 511, first ring groove; 52, diffuser passage; 53, first guide vane;

[0061] 6, guide; 61, second base body; 611, second ring groove; 62, guide passage; 63, second guide vane;

[0062] 7, shell; 71, inlet; 72, outlet; 701, front shell section; 702, rear shell section; 703, ring connecting piece; 704, first shell; 705, second shell; 706, ring positioning piece; 7061, third ring step; 707, ring positioning groove;

[0063] 8, front flow regulating part; 81, first ring protrusion; 82, third ring protrusion; 9, front collecting cavity; 10, exhaust port;

[0064] 11, rear flow regulating part; 111, second ring protrusion; 112, fourth ring protrusion;

[0065] 12, rear plenum; 13, air inlet; 14, compressor inlet shroud; 15, compressor wheel nut; 16, turbine nut. DETAILED DESCRIPTION

[0066] In order to make the objectives, technical solutions and advantages of the application clearer, the technical solutions in the application will be clearly described below with reference to the accompanying drawings of the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all of them. Based on the embodiments of the application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the application.

[0067] In the description of the embodiments of the application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the embodiments of the application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0068] In the description of the embodiments of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0069] In the embodiments of the application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be 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, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or it only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or it only means that the horizontal height of the first feature is less than that of the second feature.

[0070] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0071] At present, the external combustion or waste heat recovery thermal power equipment based on the Brayton cycle in the related art, such as the external combustion gas turbine, mostly has one intake volute and one exhaust volute. The structure of the volute is complex, the production and assembly are difficult, the utilization rate of the internal space of the equipment main body is low, and the use is inconvenient.

[0072] According to the thermal power equipment provided by the first aspect of the present application, please refer to Figures 1 to 20 , the thermal power equipment comprises a compressor impeller 1, a turbine 2, a connecting shaft 3, a shaft sleeve 4, a diffuser 5, a guide 6, a front rectifying part 8, a rear rectifying part 11 and a shell 7.

[0073] The compressor impeller 1 and the turbine 2 are connected through the connecting shaft 3, and the compressor impeller 1 and the turbine 2 rotate synchronously, that is, when the turbine 2 rotates, the compressor impeller 1 will be synchronously driven to rotate, and then air is sucked from the air inlet end of the compressor air cover 14 and compressed. The outer side of the connecting shaft 3 is sleeved with the shaft sleeve 4, and the shaft sleeve 4 is in a static state when the thermal power equipment works, and the compressor impeller 1, the turbine 2 and the connecting shaft 3 rotate relative to the shaft sleeve 4. Among them, the detachable compressor impeller nut 15 and turbine nut 16 are arranged at both ends of the connecting shaft 3 respectively, the compressor impeller nut 15 is used to fix the compressor impeller 1, and the turbine nut 16 is used to fix the turbine 2.

[0074] The diffuser 5 at least comprises a first base body 51, the first base body 51 adopts an axisymmetric or rotationally symmetric structure, for example, can adopt a disc structure, and the first base body 51 is connected to one end of the shaft sleeve 4 close to the compressor impeller 1.

[0075] In some cases, a through hole is provided in the center of the first base body 51, the connecting shaft 3 is arranged in the through hole, and then connected to the compressor impeller 1 and the air inlet end nut.

[0076] In some other cases, the first base 51 comprises a plurality of components that can be spliced together, such as two half-ring structures, with the connecting shaft 3 passing through the center of the two half-ring structures. It should be noted that in this concept, the first base 51 can be divided into three, four, five, etc. components, which can be set according to the needs of use.

[0077] The guide 6 at least comprises a second base 61, which adopts an axisymmetric or rotationally symmetric structure, such as a disc structure, and is connected to the shaft sleeve 4 at an end close to the turbine 2. The second base 61 is the same as the first base 51 and can be provided with a through hole at the center or can be divided into a plurality of components.

[0078] The casing 7 is a through-cylinder structure, and the through-cylinder structure is formed with an inlet 71 and an outlet 72 at two ends, respectively. The diffuser 5, the guide 6, and the shaft sleeve 4 are located inside the casing 7, and the two ends of the connecting shaft 3 extend out along the inlet 71 and the outlet 72, with the length of the extension being determined according to specific conditions. The diffuser 5 and the guide 6 are both connected to the inner wall of the casing 7, and at this time, the casing 7 is fixedly connected to the guide 6 and the diffuser 5. The guide 6 and the diffuser 5 are connected to the shaft sleeve 4, and the compressor impeller 1 and the turbine 2 are fixed to the two ends of the connecting shaft 3 by nuts and can freely rotate. The compressor impeller 1 is arranged outside the inlet 71, and the turbine 2 is arranged outside the outlet 72.

[0079] Please refer to Figure 1 and Figure 3 In order to enable the compressor impeller 1 to suck in external air, compress it, and then send it into the front plenum 9, a compressor air inlet cover 14 is arranged at the inlet 71 of the casing 7, and at the same time, the compressor air inlet cover 14 is connected and fixed to the inlet 71 of the casing 7.

[0080] The front flow regulating member 8 is a gradually expanding cylindrical structure with both ends through, and includes a small size end and a large size end, that is, the cylindrical structure gradually transitions from the small size end to the large size end. In order to reduce the wind resistance of the front flow regulating member 8, the front flow regulating member 8 is an axisymmetric or rotationally symmetric structure. In the embodiment, the front flow regulating member 8 is a rotationally symmetric frustum structure with a side wall similar to a frustum structure. The front flow regulating member 8 is sleeved outside the shaft sleeve 4 and located in the shell 7, the small size end is connected to the first base body 51, and the large size end is connected to the inner wall of the shell 7. The front flow regulating member 8 and the inner wall of the shell 7 form a front gas collecting cavity 9 with a changing distance, that is, at the small size end of the front flow regulating member 8, the size of the front gas collecting cavity 9 is larger, and at the large size end of the front flow regulating member 8, the size of the front gas collecting cavity 9 is reduced to zero. The shell 7 is formed with an exhaust port 10 outside the shell 7 which is communicated with the front gas collecting cavity 9, the exhaust port 10 corresponds to the position between the small size end and the large size end of the front flow regulating member 8, and the diffuser 5 is provided with a diffuser passage 52 which is communicated with the front gas collecting cavity 9 along the outside of the inlet 71 of the shell 7, the diffuser passage 52 is located radially outside the first base body 51, and is used to introduce the air sucked by the compressor impeller 1 into the front gas collecting cavity 9 after compression, and adjust the flow rate, pressure and the like of the air in the front gas collecting cavity 9.

[0081] In some cases, referring to Figure 12 , the diffuser 5 further includes a plurality of first guide vanes 53 which are uniformly arranged between the first base body 51 and the inner wall of the shell 7, and the adjacent two first guide vanes 53 form the diffuser passage 52. At this time, the plurality of first guide vanes 53 are connected to the inner wall of the shell 7, and can fix the position of the diffuser 5.

[0082] In other cases, the diffuser 5 is a disc structure as a whole, the first base body 51 is a smaller disc, and a plurality of diffuser passages 52 are uniformly arranged outside the first base body 51 of the diffuser 5, which are used to introduce the air sucked by the compressor impeller 1 into the front gas collecting cavity 9 after compression.

[0083] The rear flow regulating member 11 is a gradually expanding cylindrical structure, both ends of the cylindrical structure are through, the rear flow regulating member 11 includes a small size end and a large size end, that is, the cylindrical structure gradually transitions from the small size end to the large size end, in order to reduce the wind resistance of the rear flow regulating member 11, the rear flow regulating member 11 is an axisymmetric or rotationally symmetric structure, in the embodiment, the rear flow regulating member 11 is a rotationally symmetric frustum structure, and has a side wall similar to a frustum structure. The rear flow regulating member 11 is sleeved outside the shaft sleeve 4 and located in the shell 7, the small size end of the rear flow regulating member 11 is connected to the second base body 61, and the large size end of the rear flow regulating member 11 is connected to the inner wall of the shell 7. The large size end of the front flow regulating member 8 and the large size end of the rear flow regulating member 11 are arranged adjacent to both sides of the annular connecting piece 703 or the annular positioning piece 706. The rear flow regulating member 11 and the inner wall of the shell 7 form a rear gas collecting cavity 12 with a changing distance, that is, at the small size end of the rear flow regulating member 11, the size of the rear gas collecting cavity 12 is large, and at the large size end of the rear flow regulating member 11, the size of the rear gas collecting cavity 12 is reduced to zero. The shell 7 is formed with an air inlet 13 communicating with the rear gas collecting cavity 12 along the outside of the shell 7, and the air inlet 13 corresponds to the position between the small size end and the large size end of the rear flow regulating member 11. The guide 6 is provided with a guide channel 62 communicating with the rear gas collecting cavity 12 along the outside of the outlet 72 of the shell 7, and the guide channel 62 is located radially outside the second base body 61, for guiding the high-temperature and high-pressure air from the air inlet 13 to the turbine 2. The rear gas collecting cavity 12 can adjust the flow rate, pressure and the like of the high-temperature and high-pressure air.

[0084] In some cases, see Figure 13 , the guide 6 further includes a plurality of second guide vanes 63, the plurality of second guide vanes 63 are uniformly arranged between the second base body 61 and the inner wall of the shell 7, and the guide channel 62 is formed between adjacent two second guide vanes 63. At this time, the plurality of second guide vanes 63 are connected to the inner wall of the shell 7, so as to fix the position of the guide 6. In addition, the outer side of the plurality of second guide vanes 63 can be further provided with an annular support, the annular support is used for fixing the plurality of second guide vanes 63, and is convenient to be connected to the shell 7.

[0085] The heat power equipment provided by the embodiment of the present application is in operation, the compressor impeller 1 sucks external air from the air inlet end of the compressor air inlet cover 14 and compresses the air into the front gas collecting cavity 9 through the diffuser channel 52, the front gas collecting cavity 9 is a gradually expanding structure, the distance between the shell 7 and the front flow regulating part 8 decreases during the air flowing from the small size end to the large size end, the air is compressed, the pressure of the air is increased, the function of the volute structure can be played, and the high-speed and high-pressure compressed air flows out along the air outlet 10. The compressed air exchanges heat with the heat exchange device or the air heating device outside after flowing out along the air outlet 10, and high-temperature and high-pressure gas is formed. The high-temperature and high-pressure gas enters the rear gas collecting cavity 12 along the air inlet 13, the rear gas collecting cavity 12 is a gradually expanding structure arranged in the reverse direction, the distance between the shell 7 and the rear flow regulating part 11 increases during the air flowing from the large size end to the small size end of the rear flow regulating part 11, the high-temperature and high-pressure gas is decompressed, cooled, expanded and speeded up in the rear gas collecting cavity 12, and high-speed airflow is formed, the high-speed airflow flows out along the guide channel 62, impacts the turbine 2 and drives the turbine 2 to rotate, and the turbine 2 rotates synchronously to drive the compressor impeller 1 to rotate. Under the premise that the heat exchange device or the air heating device outside can provide sufficient heat energy, the work done by the high-temperature and high-pressure gas after expansion on the turbine 2 is greater than the work done by the compressor impeller 1 on the air compression, so that the heat power equipment can realize continuous recycling of heat energy.

[0086] In the embodiment of the present application, the gradually expanding front flow regulating part 8 and the rear flow regulating part 11 arranged in the shell 7 can realize air pressure increase and decompression expansion, and can play the function of the volute; the front flow regulating part 8 and the rear flow regulating part 11 are symmetrical relative to the two sides of the ring connecting piece 703 or the ring positioning piece 706 of the shell 7, the structure of a single part is simple, the production cost, the assembly cost and the complexity of the heat power equipment are reduced, and the utilization efficiency of the internal space of the heat power equipment is improved.

[0087] In the embodiment of the present application, the front flow regulating part 8 and the rear flow regulating part 11 are both gradually expanding cylindrical structures, the structures of the two are similar, and the sizes can be the same or different, and the gradually expanding cylindrical structures are both used for adjusting the size of the gas collecting cavity.

[0088] In some cases, please refer to Figure 6 and Figure 7 , the small size end of the gradually expanding cylindrical structure of the front flow regulating part 8 and the rear flow regulating part 11 linearly transitions to the large size end, that is, the gradually expanding cylindrical structure is similar to the side wall of a circular truncated cone.

[0089] In other cases, please refer to Figure 8 and Figure 9, the small size end of the gradually expanding cylindrical structure of the front fairing component 8 and the rear fairing component 11 transitions to the large size end along a curved surface that is concave relative to the central axis of the connecting shaft 3. That is, when the small size end transitions to the large size end, the increasing trend of the former stage is relatively flat, and the increasing trend of the latter stage is relatively fast, which is a circular table structure with a concave side surface.

[0090] In other cases, please refer to Figure 10 and Figure 11 , the small size end of the gradually expanding cylindrical structure of the front fairing component 8 and the rear fairing component 11 transitions to the large size end along a curved surface that is convex relative to the central axis of the connecting shaft 3. That is, when the small size end transitions to the large size end, the increasing trend of the former stage is relatively fast, and the increasing trend of the latter stage is relatively flat, which is a circular table structure with a convex side surface.

[0091] In Figures 6 to 11 the structure shown, the adjustment range of air pressure and air flow rate is different, and the appropriate structure type can be selected as needed.

[0092] In some embodiments, please refer to Figure 12 , the first base body 51 is provided with a first annular groove 511 on the side facing the front fairing component 8, and the small size end of the front fairing component 8 is provided with a first annular protrusion 81, which is embedded in the first annular groove 511.

[0093] It can be understood that when the first annular protrusion 81 is embedded in the first annular groove 511, the first base body 51 and the front fairing component 8 maintain a relatively stable positional relationship, and the first base body 51 and the front fairing component 8 maintain sealing, avoiding the entry of compressed air into the hollow interior of the front fairing component 8. In order to improve the sealing between the first base body 51 and the front fairing component 8, a sealant can be filled between the first annular groove 511 and the first annular protrusion 81.

[0094] In some cases, please refer to Figure 13 , the second base body 61 is provided with a second annular groove 611 on the side facing the rear fairing component 11, and the small size end of the rear fairing component 11 is provided with a second annular protrusion 111, which is embedded in the second annular groove 611. When the second annular protrusion 111 is embedded in the second annular groove 611, the second base body 61 and the rear fairing component 11 maintain a relatively stable positional relationship, and the second base body 61 and the rear fairing component 11 maintain sealing, avoiding the entry of air into the hollow interior of the rear fairing component 11. In order to improve the sealing between the second base body 61 and the rear fairing component 11, a sealant can be filled between the second annular groove 611 and the second annular protrusion 111.

[0095] In some cases, the first base 51 is welded to the small-size end of the front rectifying member 8, and the second base 61 is welded to the small-size end of the rear rectifying member 11.

[0096] In some cases, the adjacent sides of the first base 51 and the second base 61 can be provided with protruding circular truncated cone steps, and the small-size end of the front rectifying member 8 and the small-size end of the rear rectifying member 11 are respectively sleeved on the circular truncated cone steps.

[0097] In the embodiment of the present application, the large-size end of the front rectifying member 8 and the large-size end of the rear rectifying member 11 are adjacently arranged on both sides of the annular connecting piece 703 or the annular positioning piece 706, and the large-size end of the front rectifying member 8 and the large-size end of the rear rectifying member 11 are both connected to the inner wall of the shell 7.

[0098] In some cases, the large-size end of the front rectifying member 8 is provided with a third annular protrusion 82, the outer ring diameter of the third annular protrusion 82 is greater than the diameter of the large-size end of the front rectifying member 8, the inner wall of the shell 7 is formed with a third annular groove, and the third annular protrusion 82 is embedded in the third annular groove.

[0099] It can be understood that the third annular groove is tightly connected with the third annular protrusion 82, which can fix the position of the front rectifying member 8 and maintain the sealing of the front gas collecting cavity 9.

[0100] In some cases, the large-size end of the rear rectifying member 11 is provided with a fourth annular protrusion 112, the inner wall of the shell 7 is formed with a fourth annular groove, and the fourth annular protrusion 112 is embedded in the fourth annular groove.

[0101] It can be understood that the fourth annular groove is tightly connected with the fourth annular protrusion 112, which can fix the position of the rear rectifying member 11 and also maintain the sealing of the rear gas collecting cavity 12.

[0102] In the thermodynamic device provided by the embodiment of the present application, the states of air in the front gas collecting cavity 9 and the rear gas collecting cavity 12 are different, the air in the front gas collecting cavity 9 is heated by the external heat exchanger and then enters the rear gas collecting cavity 12, so the temperature of the air in the rear gas collecting cavity 12 is higher. In order to achieve the design requirement of the working efficiency of the hot air in the rear gas collecting cavity 12, it is necessary to avoid heat exchange between the two gas collecting cavities as much as possible. Therefore, a heat insulation member can be arranged between the front rectifying member 8 and the rear rectifying member 11, thereby reducing heat transfer.

[0103] In some embodiments, the large-size end of the front rectification component 8 and the large-size end of the rear rectification component 11 are not provided with annular protrusions, and the diameter of the large-size end is consistent with the diameter of the inner wall of the shell 7. When the front rectification component 8 and the rear rectification component 11 are installed in the shell 7, the large-size end of the front rectification component 8 and the large-size end of the rear rectification component 11 are in close connection with the inner wall of the shell 7. In some cases, a sealing gasket or a filling sealant can be provided on the large-size end of the two.

[0104] In some embodiments, referring to Figure 1 , Figure 2 , Figure 17 and Figure 19 , the shell 7 includes a front shell segment 701, a rear shell segment 702, and a circumferential connecting piece 703, and the shell 7 is connected together in a segmented form.

[0105] The front shell segment 701 is sleeved on the outer side of the diffuser 5 and the front rectification component 8, the rear shell segment 702 is sleeved on the outer side of the rear rectification component 11 and the guider 6, and the circumferential connecting piece 703 is arranged at a position between the front shell segment 701 and the rear shell segment 702. In order to realize the fixed connection between the front shell segment 701 and the rear shell segment 702, annular convex ribs (similar to flange structures) are respectively arranged on the adjacent end portions of the front shell segment 701 and the rear shell segment 702, and the annular convex ribs on both sides are fixed by bolt connection or buckle structure.

[0106] In the embodiment of the application, a third annular groove is formed between the pipe wall end portion of the front shell segment 701 and the circumferential connecting piece 703, and a fourth annular groove is formed between the pipe wall end portion of the rear shell segment 702 and the circumferential connecting piece 703, and the front shell segment 701, the circumferential connecting piece 703 and the rear shell segment 702 are fixedly connected.

[0107] It can be understood that before the front shell segment 701, the circumferential connecting piece 703 and the rear shell segment 702 are connected, the front rectification component 8 needs to be inserted into the front shell segment 701 and the rear rectification component 11 needs to be inserted into the rear shell segment 702. When the front shell segment 701, the circumferential connecting piece 703 and the rear shell segment 702 are fixed, the front rectification component 8 and the rear rectification component 11 are also fixed synchronously.

[0108] In some embodiments, the pipe wall end portion of the front shell segment 701 on the side facing the circumferential connecting piece 703 is provided with a first annular step (recessed relative to the pipe wall end portion), and a third annular groove is formed between the circumferential connecting piece 703 and the first annular step.

[0109] Referring to Figure 2 , when the pipe wall end portion of the front shell segment 701 on the side facing the circumferential connecting piece 703 is provided with a first annular step, the third annular protrusion 82 is located at the first annular step, and the circumferential connecting piece 703 supports and abuts against the third annular protrusion 82.

[0110] In some cases, the annular connecting piece 703 is also provided with an annular boss at the position corresponding to the first annular step, and the sum of the height of the annular boss and the thickness of the third annular protrusion 82 is equal to the depth of the first annular step, so that two sealing surfaces (i.e. side surface and top surface) are formed between the first annular step and the third annular protrusion 82, and the sealing effect is better.

[0111] In some cases, the rear shell segment 702 is provided with a second annular step (recessed relative to the pipe wall end) at the pipe wall end on the side of the annular connecting piece 703, and the fourth annular groove is formed between the annular connecting piece 703 and the second annular step.

[0112] Please refer to Figure 2 When the rear shell segment 702 is provided with the second annular step at the pipe wall end on the side of the annular connecting piece 703, the fourth annular protrusion 112 is located at the second annular step, and the annular connecting piece 703 supports and abuts against the fourth annular protrusion 112.

[0113] In some cases, the annular connecting piece 703 is also provided with an annular boss at the position corresponding to the second annular step, and the sum of the height of the annular boss and the thickness of the fourth annular protrusion 112 is equal to the depth of the second annular step, so that two sealing surfaces (i.e. side surface and top surface) are formed between the second annular step and the fourth annular protrusion 112, and the sealing effect is better.

[0114] In some embodiments, please refer to Figure 3 , Figure 4 , Figure 18 and Figure 20 , the shell 7 comprises a first shell 704, a second shell 705 and an annular positioning piece 706, and the shell 7 is connected in a two-side splicing form.

[0115] The first shell 704 and the second shell 705 are arranged side by side, and both the first shell 704 and the second shell 705 are semicircular arc-shaped shells. After splicing, the first shell 704 and the second shell 705 form a complete shell 7. Between the two semicircular arc concave shell surfaces adjacent to each other of the first shell 704 and the second shell 705, a containing cavity is formed, and the diffuser 5, the front rectifying component 8, the rear rectifying component 11 and the guider 6 are arranged in the containing cavity. In order to realize the connection of the first shell 704 and the second shell 705, a strip-shaped convex rib is arranged at the edge where the first shell 704 and the second shell 705 meet, and the two strip-shaped convex ribs are connected through bolts or buckle structures. An annular positioning groove 707 is arranged on the cavity wall of the containing cavity, and the annular positioning groove 707 is used for fixing the large-size end of the front rectifying component 8 and the large-size end of the rear rectifying component 11.

[0116] An annular positioning member 706 is further arranged in the accommodating cavity, the diameter of the annular positioning member 706 is greater than the diameter of the accommodating cavity and is consistent with the diameter of the annular positioning groove 707. Figure 4 The annular positioning member 706 is embedded in the annular positioning groove 707 and is sleeved on the outside of the shaft sleeve 4, a third annular groove is formed between the side of the annular positioning member 706 facing the front rectifier part 8 and the groove wall of the annular positioning groove 707, and a fourth annular groove is formed between the side of the annular positioning member 706 facing the rear rectifier part 11 and the other groove wall of the annular positioning groove 707. When the first shell 704, the second shell 705 and the annular positioning member 706 are connected in a clamping manner, the third annular protrusion 82 of the front rectifier part 8 is embedded in the third annular groove, and the fourth annular protrusion 112 of the rear rectifier part 11 is embedded in the fourth annular groove, so that the assembly process is more convenient.

[0117] In some embodiments, the two sides of the annular positioning member 706 are formed with third annular steps 7061. Please refer to Figure 4 The height of the third annular step 7061 refers to the distance between the two parallel planes of the annular positioning member 706 perpendicular to the central axis of the connecting shaft 3. The height of the third annular step 7061 is less than or equal to the thickness of the third annular protrusion 82 and the thickness of the fourth annular protrusion 112.

[0118] In some cases, please refer to Figure 4 The height of the third annular step 7061 is equal to the thickness of the third annular protrusion 82 and the thickness of the fourth annular protrusion 112. During the assembly process, the front rectifier part 8, the annular positioning member 706 and the rear rectifier part 11 are spliced, the third annular protrusion 82 of the front rectifier part 8 is embedded in the third annular groove, the fourth annular protrusion 112 of the rear rectifier part 11 is embedded in the fourth annular groove, and then the first shell 704 and the second shell 705 are clamped, so that the assembly process is fast and the sealing between different parts can be maintained.

[0119] In other cases, the height of the third annular step 7061 is less than the thickness of the third annular protrusion 82 and the thickness of the fourth annular protrusion 112, the third annular protrusion 82 of the front rectifier part 8 is embedded in the third annular groove, and the fourth annular protrusion 112 of the rear rectifier part 11 is embedded in the fourth annular groove. At this time, the interference assembly is adopted, so that the sealing and stability between the parts are increased.

[0120] In the embodiment of the present application, the guide 6 at least includes a second base body 61 and a plurality of second guide vanes 63, the plurality of second guide vanes 63 are uniformly distributed on the radially outer side of the second base body 61, and a guide channel 62 is formed between adjacent two second guide vanes 63.

[0121] The second guide vane 63 is used to guide the high-speed airflow in the rear collecting cavity 12 to impact the turbine 2, thereby driving the rotation of the turbine 2. In order to maximize the use of the high-speed airflow, the second guide vane 63 is arc-shaped and streamlined, and has a certain angle with the central axis of the connecting shaft 3. The high-speed airflow flowing through the second guide vane 63 impacts the blades of the turbine 2, thereby driving the turbine 2 to work.

[0122] According to the working principle of the heat power equipment, when the high-pressure airflow passes through the heat exchanger or the working medium heating device, part of the heat is absorbed to form high-temperature and high-pressure gas. Then, the high-temperature and high-pressure gas expands in the rear collecting cavity 12 to become high-speed airflow, and the high-speed airflow impacts the turbine 2 to do work.

[0123] In some cases, the temperature of the heat exchanger or the working medium heating device is not stable. When the heat power equipment recovers heat / waste heat, the rotation speed of the turbine 2 is affected by the temperature of the heat exchanger or the working medium heating device, thereby affecting the rotation speed of the turbine 2 and the work efficiency of the heat power equipment. In order to stabilize the output of the heat power equipment when it works, it is necessary to adjust the relationship between the temperature of the heat exchanger or the working medium heating device and the rotation speed of the turbine 2, and to reduce the influence of temperature change on the rotation speed of the turbine 2 as much as possible.

[0124] In the embodiment, the air outlet angle of the second guide vane 63 can be adjusted. An angle adjusting assembly is arranged at the housing 7 or the second base body 61. The second guide vane 63 is rotationally connected to the second base body 61. The angle adjusting assembly is connected to the second guide vane 63. The angle adjusting assembly can adjust the air outlet angle of the second guide vane 63, that is, the air outlet angle is deflected relative to the central axis of the connecting shaft 3.

[0125] When the heat power equipment works, the air outlet angle of the second guide vane 63 can be adjusted according to the actual temperature of the heat exchanger or the working medium heating device. The working principle is as follows:

[0126] In the adjustable range, there is an optimal air outlet angle between the second guide vane 63 and the turbine 2. For example, when the air outlet angle is perpendicular to the windward surface of the blade of the turbine 2, it is the optimal air outlet angle. Assuming that the included angle between the actual air outlet angle and the optimal air outlet angle is the deviation angle, under the same high-speed airflow, the smaller the deviation angle, the higher the rotation speed of the turbine 2, and the larger the deviation angle, the lower the rotation speed of the turbine 2. It can be deduced that when the rotation speed of the turbine 2 is maintained, the smaller the deviation angle, the smaller the flow rate of the high-speed airflow required.

[0127] When the actual temperature of the heat exchanger or the working medium heating device fluctuates between the minimum temperature and the maximum temperature, assuming that the temperature difference between the maximum temperature and the actual temperature is the deviation temperature, when the air outlet angle of the second guide vane 63 is adjusted according to the actual temperature of the heat exchanger or the working medium heating device, there is a negative correlation between the deviation angle and the deviation temperature.

[0128] The greater the deviation temperature is, the lower the actual temperature is, the air expansion amount is reduced, the deviation angle is reduced, the rotation of the turbine 2 is promoted, and the rotation speed of the turbine 2 is stabilized.

[0129] The smaller the deviation temperature is, the higher the actual temperature is, the air expansion amount is increased, the deviation angle is increased, the rotation of the turbine 2 is slowed down, and the rotation speed of the turbine 2 is stabilized.

[0130] According to the above content, the outflow angle of the second guide vane 63 is adjusted according to the actual temperature of the heat exchanger or the working medium heating device, and the negative correlation between the deviation angle and the deviation temperature can stabilize the rotation speed of the turbine 2, the work efficiency and the power generation efficiency of the heat power equipment are stable, and the heat power equipment is conducive to popularization and use.

[0131] In some embodiments, the first base body 51 and the second base body 61 are both disc structures, the disc edge of the first base body 51 is smoothly connected with the small-size end of the front flow regulating component 8, and the disc edge of the second base body 61 is smoothly connected with the small-size end of the rear flow regulating component 11.

[0132] Please refer to Figure 2 and Figure 4 , the disc edge of the first base body 51 is smoothly connected with the small-size end of the front flow regulating component 8, the resistance of the compressed air flowing through the diffuser passage 52 is reduced, the compressed air can quickly flow to the front flow regulating component 8 and the exhaust port 10. The disc edge of the second base body 61 is smoothly connected with the small-size end of the rear flow regulating component 11, the resistance of the high-speed airflow in the rear collecting cavity 12 along the rear flow regulating component 11 to the guide passage 62 is small, which helps to improve the rotation speed of the turbine 2 and improve the heat energy recovery efficiency.

[0133] According to the heat power generation system provided by the second aspect of the present application, the heat power equipment is connected with the driving shaft of the generator, and the heat power equipment is connected with the driving shaft of the generator.

[0134] When the thermodynamic power generation system is running, the compressor impeller 1 sucks air from the air inlet end of the compressor air inlet cover 14 and pressurizes it along the diffuser passage 52 into the front plenum chamber 9, which is a gradually expanding structure. In the process of air flowing from the small size end to the large size end, the distance between the shell 7 and the front fairing 8 decreases, the air is compressed, the pressure increases, and the effect of the volute structure can be played. The high-speed, high-pressure compressed air flows out along the air outlet 10. After the compressed air flows out along the air outlet 10, it exchanges heat with the external heat exchange device or air heating device, forming high-temperature and high-pressure gas. The high-temperature and high-pressure gas enters the rear plenum chamber 12 along the air inlet 13, and the rear plenum chamber 12 is a reversely arranged gradually expanding structure. In the process of air flowing from the large size end of the rear fairing 11 to the small size end, the distance between the shell 7 and the rear fairing 11 increases. The high-temperature and high-pressure gas is depressurized, cooled, expanded, and accelerated in the rear plenum chamber 12, and then the high-speed airflow impacts the turbine 2 to rotate. When the turbine 2 rotates, the compressor impeller 1 is driven to rotate synchronously, and in turn drives the generator connected to the connecting shaft 3 to generate electricity. Under the premise that the external heat exchange device or air heating device can provide sufficient heat energy, the high-temperature and high-pressure gas expands to do work on the turbine 2, which is greater than the work done by the compressor impeller 1 on the air. Therefore, the generator connected to the connecting shaft 3 can continuously output electric energy to the outside.

[0135] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A thermodynamic device, characterized by, Comprise: A compressor impeller and a turbine connected by a connecting shaft, the outer side of the connecting shaft is sleeved with a shaft sleeve; A diffuser comprising a first base connected to one end of the shaft sleeve close to the compressor impeller; A guide comprising a second base connected to one end of the shaft sleeve close to the turbine; A shell which is a through-cylinder structure and is formed with an inlet and an outlet, the diffuser and the guide are arranged in the shell and are connected to the inner wall of the shell, the compressor impeller is arranged outside the inlet, and the turbine is arranged outside the outlet; A compressor air inlet cover fixedly connected to the inlet of the shell; A front flow regulating component which is a gradually expanding cylindrical structure and is sleeved outside the shaft sleeve, the small size end of the front flow regulating component is connected to the first base, and the large size end of the front flow regulating component is connected to the inner wall of the shell in a ring shape, a front gas collecting cavity is formed between the front flow regulating component and the inner wall of the shell, the shell is formed with an exhaust port outside the shell which is communicated with the front gas collecting cavity, and the diffuser is provided with a diffuser passage communicated with the front gas collecting cavity along the outside of the inlet of the shell; A rear flow regulating component which is a gradually expanding cylindrical structure and is sleeved outside the shaft sleeve, the small size end of the rear flow regulating component is connected to the second base, and the large size end of the rear flow regulating component is connected to the inner wall of the shell in a ring shape, a rear gas collecting cavity is formed between the rear flow regulating component and the inner wall of the shell, the shell is formed with an air inlet outside the shell which is communicated with the rear gas collecting cavity, and the guide is provided with a guide passage communicated with the rear gas collecting cavity along the outside of the outlet of the shell; The large size end of the front flow regulating component and the large size end of the rear flow regulating component are arranged adjacently.

2. The thermodynamic device of claim 1, wherein, The small size end of the front flow regulating component and the small size end of the rear flow regulating component are linearly transitioned to the large size end; Or, the small size end of the front flow regulating component and the small size end of the rear flow regulating component are transitioned to the large size end along a curved surface which is concave relative to the central axis of the connecting shaft; Or, the small size end of the front flow regulating component and the small size end of the rear flow regulating component are transitioned to the large size end along a curved surface which is convex relative to the central axis of the connecting shaft.

3. The thermodynamic device of claim 1, wherein, The first base is provided with a first annular groove on the side facing the front flow regulating component, the small size end of the front flow regulating component is provided with a first annular protrusion, and the first annular protrusion is embedded in the first annular groove; And / or, the second base is provided with a second annular groove on the side facing the rear flow regulating component, the small size end of the rear flow regulating component is provided with a second annular protrusion, and the second annular protrusion is embedded in the second annular groove.

4. The thermodynamic device of claim 1, wherein, The large size end of the front flow regulating component is provided with a third annular protrusion, the inner wall of the shell is formed with a third annular groove, and the third annular protrusion is embedded in the third annular groove; And / or, the large size end of the rear flow regulating component is provided with a fourth annular protrusion, the inner wall of the shell is formed with a fourth annular groove, and the fourth annular protrusion is embedded in the fourth annular groove.

5. The thermodynamic device of claim 4, wherein, The shell comprises: A front shell segment sleeved outside the diffuser and the front flow regulating component; A rear shell section is sleeved outside the rear fairing component and the guide; A ring-shaped connecting piece is arranged between the front shell section and the rear shell section, and a third annular groove is formed between the pipe wall end of the front shell section and the ring-shaped connecting piece, and a fourth annular groove is formed between the pipe wall end of the rear shell section and the ring-shaped connecting piece, and the front shell section, the ring-shaped connecting piece and the rear shell section are fixedly connected.

6. The thermodynamic device of claim 5, wherein, The pipe wall end of the front shell section towards the ring-shaped connecting piece is provided with a first annular step, and the third annular groove is formed between the ring-shaped connecting piece and the first annular step; And / or, the pipe wall end of the rear shell section towards the ring-shaped connecting piece is provided with a second annular step, and the fourth annular groove is formed between the ring-shaped connecting piece and the second annular step.

7. The thermodynamic device of claim 4, wherein, The shell comprises: The first shell and the second shell are arranged side by side, and the first shell and the second shell are provided with a receiving cavity between two adjacent semicircular concave surfaces, and the diffuser, the front fairing component, the rear fairing component and the guide are arranged in the receiving cavity, and the receiving cavity is provided with an annular positioning groove; An annular positioning piece is embedded in the annular positioning groove and sleeved outside the shaft sleeve, and the third annular groove is formed between the side of the annular positioning piece towards the front fairing component and the groove wall of the annular positioning groove, and the fourth annular groove is formed between the side of the annular positioning piece towards the rear fairing component and the other groove wall of the annular positioning groove.

8. The thermodynamic device of claim 7, wherein, Both sides of the annular positioning piece are formed with a third annular step, and the height of the third annular step is less than or equal to the thickness of the third annular protrusion and the thickness of the fourth annular protrusion.

9. The thermodynamic device according to any one of claims 1 to 8, characterized in that The diffuser further comprises a plurality of first guide vanes, and the plurality of first guide vanes are uniformly arranged between the first base body and the inner wall of the shell, and the diffuser passage is formed between adjacent two first guide vanes. The guide further comprises a plurality of second guide vanes, and the plurality of second guide vanes are uniformly arranged between the second base body and the inner wall of the shell, and the guide passage is formed between adjacent two second guide vanes.

10. The thermodynamic device of claim 9, wherein, The air outlet angle of the second guide vane is adjustable.

11. The thermodynamic device according to any one of claims 1 to 8, characterized in that The first base body and the second base body are both disc structures, the disc edge of the first base body is smoothly connected with the small-size end of the front fairing component, The disc edge of the second base body is smoothly connected with the small-size end of the rear fairing component.

12. A thermodynamic power generation system, characterized by, The thermodynamic device comprises the heat pump system according to any one of claims 1 to 11.

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