Assembled fan blades and water turbine generator set slip ring chamber facilitating ventilation and cooling

Abstract

The utility model relates to the technical field of slip ring chamber cooling, in particular to an assembly type fan blade and a water turbine generator set slip ring chamber convenient for ventilation and cooling, which comprises a fan blade body and a fan blade cover, the split type fixing mechanisms are connected with the blades through connecting mechanisms; the split type fixing mechanism comprises a fixing ring and fastening rings connected to the two ends of the fixing ring in a threaded mode. The device has the advantages of being simple in structure, easy to maintain and good in heat dissipation effect, the service life of electrical equipment in the slip ring chamber of the water-turbine generator set is effectively prolonged, meanwhile, carbon powder accumulation generated after an excitation carbon brush is abraded can be reduced through air flow in the slip ring chamber, and the service life of the electrical equipment is prolonged. Short circuit of electrical equipment is prevented; the fan blades are of a split type fixing structure, so that the blades can be installed outside the main shaft in a lossless mode in an enclosing mode.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling a slip ring chamber, and in particular discloses an assembled fan blade and a slip ring chamber of a turbine generator set that is convenient for ventilation and cooling. Background Art

[0002] The excitation carbon brushes of the hydro-turbine generator set are generally arranged in the slip ring chamber. When the unit is running for a long period of time under high load to generate electricity (especially emitting / absorbing a large amount of reactive power), the current flowing through the excitation carbon brushes will generate huge heat, which will accumulate in the slip ring chamber, causing the temperature of the slip ring chamber to rise, accelerating the aging of electrical equipment, and may cause overheating and burning in locations with poor local heat dissipation conditions, which will have an adverse effect on the stable operation of the unit;

[0003] The heat dissipation method currently used is natural ventilation, but natural ventilation is affected by external wind and cannot be effectively controlled. Therefore, the applicant thought of installing fan blades on the outside of the turbine main shaft, using the rotation of the turbine main shaft to drive the fan blades to rotate and accelerate the air flow, and finally achieve ventilation and cooling;

[0004] However, the transmission fan blades are an integrated structure, which is not convenient to install on the outside of the turbine main shaft and is difficult to install. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the problem that the existing fan blades are inconvenient to install, an assembled fan blade is proposed.

[0007] Therefore, one of the objects of the present invention is to provide an assembled fan blade.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: an assembled fan blade, comprising:

[0009] The fan blade body comprises a split fixing mechanism, wherein blades are equidistantly arranged on the periphery of the split fixing mechanism, and the split fixing mechanism and the blades are connected by a connection mechanism;

[0010] Wherein, the split fixing mechanism comprises a fixing ring and fastening rings threadedly connected to both ends of the fixing ring.

[0011] As a preferred solution of the assembled fan blade described in the utility model, the fixed ring includes an enclosure block 1 and an enclosure block 2, the enclosure block 1 is a "C"-shaped structure, the enclosure block 2 is an arc-shaped structure, and the enclosure block 2 and the enclosure block 1 form a complete circular ring.

[0012] As a preferred solution of the assembled fan blade of the utility model, arc plates are fixed on both sides of the enclosure block 1 and the enclosure block 2, and conical thread grooves are opened on the outer sides of the arc plates.

[0013] As a preferred solution of the assembled fan blade described in the utility model, the fastening ring includes a half ring block 1 and a half ring block 2, both ends of the half ring block 1 and the half ring block 2 are fixed with fixing ears, and the inner sides of the half ring block 1 and the half ring block 2 are provided with conical internal thread grooves.

[0014] As a preferred solution of the assembled fan blades described in the utility model, the connection mechanism includes a fixed seat, an installation groove is provided on the outer side of the fixed seat, a mounting plate is rotatably connected to the inner side of the mounting groove, a notch is provided on the upper surface of the mounting plate, and an angle adjustment component for adjusting the angle of the mounting plate is installed on the mounting plate.

[0015] As a preferred solution of the assembled fan blades described in the utility model, the angle adjustment component includes strip-shaped through grooves symmetrically extending through both ends of the mounting plate and bolts threadedly connected to the fixing seat, the ends of the bolts are rotatably connected to strip blocks passing through the strip-shaped through grooves, the ends of the strip blocks are rotatably connected to abutment blocks on both sides, and the abutment blocks are attached to the bottom surface of the mounting plate.

[0016] As a preferred solution of the assembled fan blade of the utility model, an arc groove is formed through the surface of the abutment block, and a guide column penetrating the arc groove is fixed to the side of the strip block.

[0017] As a preferred solution of the assembled fan blade of the utility model, a gear ring is fixed to the rotating end of the bolt, and an elastic clamp is provided on one side of the gear ring.

[0018] Beneficial effects of the utility model: the utility model adopts a split fixing structure, so that the blades can be installed outside the main shaft in an enclosed manner without damage, solving the problem that it is difficult to install the fan blades in a sleeve manner after the two ends of the main shaft are connected to the equipment, and effectively reducing the difficulty of installation;

[0019] The connection mechanism can also adjust the angle of the blades while installing the blades, so that the angles of the blades are consistent, ensuring the smooth rotation of the blades and avoiding vibration problems caused by the deviation of the rotation center.

[0020] In view of the above-mentioned problems of ventilation of the existing slip ring chamber, a slip ring chamber of a turbine generator set which is convenient for ventilation and cooling is proposed.

[0021] Therefore, the utility model also provides a slip ring chamber of a turbine generator set which is convenient for ventilation and cooling.

[0022] In order to solve the above technical problems, the utility model also provides the following technical solutions: including the above-mentioned assembled fan blades, and also including:

[0023] The transmission mechanism comprises a turbine main shaft, the upper end of which is rotatably connected to an air intake sleeve, and a carbon brush slip ring is installed on the outside of the turbine main shaft;

[0024] The assembled fan blades are installed outside the main shaft of the water turbine;

[0025] The protective mechanism covers the outside of the transmission mechanism.

[0026] As a preferred solution of the slip ring chamber of the turbine generator set that is easy to ventilate and cool down as described in the utility model, the protective mechanism includes an outer cover, an air inlet hole is opened at the outer periphery of the outer cover near the bottom position, and an air outlet hole is opened on the upper surface of the outer cover, and an inspection door is rotatably installed on the outer side of the outer cover.

[0027] The beneficial effects of the utility model are as follows: the rotational energy of the turbine main shaft drives the fan blades to rotate, promoting the forced external circulation of the air in the slip ring chamber, having the characteristics of simple structure, easy maintenance and good heat dissipation effect, effectively improving the life of the electrical equipment in the slip ring chamber of the turbine generator set, and at the same time, the air flow in the slip ring chamber can also reduce the accumulation of carbon powder generated by the wear of the excitation carbon brush, thereby preventing the electrical equipment from short circuiting. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model's assembled fan blades and a slip ring chamber of a turbine generator set that facilitates ventilation and cooling.

[0030] Figure 2 It is a schematic diagram of the structure of the fan blade body in the assembled fan blade of the utility model.

[0031] Figure 3 It is a structural schematic diagram of the split fixing mechanism in the assembled fan blade of the utility model.

[0032] Figure 4 It is a structural schematic diagram of the connection mechanism in the assembled fan blade of the utility model.

[0033] Figure 5 For this utility model Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0034] Figure 6 The utility model is a schematic diagram of the structure of the slip ring chamber of the turbine generator set which is convenient for ventilation and cooling. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0038] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0039] Example 1

[0040] Reference Figure 1 , provides an overall structural schematic diagram of an assembled fan blade and a slip ring chamber of a turbine generator set that is convenient for ventilation and cooling, such as Figure 1-3 , an assembled fan blade, comprising:

[0041] The fan blade body 100 includes a split fixing mechanism 101, and blades 102 are equidistantly arranged on the outer periphery of the split fixing mechanism 101;

[0042] The split fixing mechanism 101 includes a fixing ring 101 a and fastening rings 101 b threadedly connected to both ends of the fixing ring 101 a.

[0043] Furthermore, the fixing ring 101a includes an enclosure block 1 101a-1 and an enclosure block 2 101a-2;

[0044] Specifically, enclosure block 1 101a-1 is a "C"-shaped structure, enclosure block 2 101a-2 is an arc-shaped structure, and enclosure block 2 101a-2 and enclosure block 1 101a-1 form a complete circular ring. During installation, enclosure block 1 101a-1 and enclosure block 2 101a-2 are enclosed outside the main axis.

[0045] Furthermore, arc-shaped plates 101a-3 are fixed on both sides of the enclosure block 1 101a-1 and the enclosure block 2 101a-2;

[0046] Specifically, three arc plates 101a-3 form a group, with two groups in total, which are fixed to both sides of the fixing ring 101a respectively. Each group of arc plates 101a-3 encloses a conical structure, and a conical thread groove 101a-4 is opened on the outer side of the arc plate 101a-3.

[0047] Furthermore, the fastening ring 101b includes a semi-ring block 101b-1 and a semi-ring block 101b-2, and fixing ears 101b-3 are fixed at both ends of the semi-ring block 101b-1 and the semi-ring block 101b-2, and conical internal thread grooves 101b-4 are provided on the inner sides of the semi-ring block 101b-1 and the semi-ring block 101b-2, and the two fixing ears 101b-3 are fixed by screws.

[0048] Specifically, the fixing ring 101a is divided into two groups, which are respectively connected to the two sides of the fixing ring 101a. During installation, the half ring block 101b-1 and the half ring block 101b-2 are first enclosed on the outside of the main shaft, and then screwed into the fixing ear 101b-3 through the screw thread to complete the installation of the fastening ring 101b.

[0049] Operation process: When installing, first enclose the half ring block 101b-1 and the half ring block 101b-2 outside the main shaft, and screw them into the fixing ear 101b-3 through the screw thread to complete the installation of the fastening ring 101b;

[0050] The enclosing block 101a-1 and the enclosing block 101a-2 are further enclosed on the outside of the main shaft, and then screwed into the conical structure composed of the arc plate 101a-3 by rotating the fastening ring 101b. Since the conical structure has a locking function, the installation is completed after tightening. The installation structure adopts a split type, so that the blades 102 can be installed on the outside of the main shaft in an enclosed manner without damage, which solves the problem that it is difficult to install the fan blades in a socket manner after the two ends of the main shaft are connected to the equipment, and effectively reduces the difficulty of installation.

[0051] Example 2

[0052] Reference Figure 4-5This embodiment is different from the first embodiment in that the fan blade body 100 also includes a connection mechanism 103,

[0053] The connecting mechanism 103 is used to install the blade 102 on the split fixing mechanism 101;

[0054] The connection mechanism 103 includes a fixing seat 103a, a mounting groove 103b is provided on the outer side of the fixing seat 103a, a mounting plate 103c is rotatably connected to the inner side of the mounting groove 103b, a notch 103d is provided on the upper surface of the mounting plate 103c, and an angle adjustment component 103e for adjusting the angle of the mounting plate 103c is installed on the mounting plate 103c.

[0055] Specifically, a slot block that is consistent with the slot 103d is fixed to one end of the blade 102, and the slot block is fixed to the slot 103d with screws;

[0056] Furthermore, the angle adjustment assembly 103e includes a strip-shaped through slot 103e-1 symmetrically extending through both ends of the mounting plate 103c and a bolt 103e-2 threadedly connected to the fixing seat 103a, the end of the bolt 103e-2 is rotatably connected to a strip block 103e-3 passing through the strip-shaped through slot 103e-1, and both sides of the end of the strip block 103e-3 are rotatably connected to abutment blocks 103e-4, which are attached to the bottom surface of the mounting plate 103c.

[0057] There are two groups of angle adjustment components 103e, which are symmetrically arranged on both sides of the mounting plate 103c, and the two groups of angle adjustment components 103e are arranged in opposite directions;

[0058] When adjusting, the bolt 103e-2 is rotated. The bolt 103e-2 is threadedly connected to the fixing seat 103a, so the rotation will drive the strip block 103e-3 to move. After the strip block 103e-3 is moved, it will pull the mounting plate 103c to rotate. The middle section of the mounting plate 103c is rotatably connected to the fixing seat 103a through the rotating shaft. Therefore, when the abutting block 103e-4 on the outer side of one of the strip blocks 103e-3 drives the mounting plate 103c to rotate with the rotating shaft as the fulcrum, the angle adjustment is achieved. Then, the bolts 103e-2 of the other group are rotated again, so that the abutting blocks 103e-4 of the other group pull the mounting plate 103c from the opposite direction to make it completely fixed. The force directions of the two abutting blocks 103e-4 are opposite, one positive and one negative to form a clamping fixation on both sides of the mounting plate 103c. The strip through groove 103e-1 is larger than the width of the strip block 103e-3, so there will be no interference when the angle changes.

[0059] Furthermore, an arc groove 103e-5 is penetrated through the surface of the abutting block 103e-4, and a guide column 103e-6 penetrating the arc groove 103e-5 is fixed to the side of the strip block 103e-3. After the strip block 103e-3 is subjected to force, the abutting block 103e-4 can change its angle along the arc groove 103e-5, and can fully fit the inclined surface when the angle of the mounting plate 103c changes.

[0060] Furthermore, a gear ring 103e-7 is fixed to the rotating end of the bolt 103e-2, and an elastic clamp 103e-8 is provided on one side of the gear ring 103e-7. The elastic clamp 103e-8 includes a clamping tooth and an elastic seat. A spring is used in the elastic seat to push the clamping tooth so that the clamping tooth is clamped into the gear ring 103e-7, thereby limiting the rotation of the bolt 103e-2 and avoiding the problem of the bolt 103e-2 being loosened.

[0061] This structure can adjust the angle of the blade 102 while installing the blade 102, so that the angle of the blade 102 is consistent, ensuring the smooth rotation of the blade 102 and avoiding vibration problems caused by the deviation of the rotation center.

[0062] The rest of the structure is the same as that of Example 1.

[0063] Example 3

[0064] Reference Figure 6 , this embodiment is different from the above embodiment in that: this embodiment discloses a slip ring chamber of a turbine generator set that is convenient for ventilation and cooling, including the above-mentioned assembled fan blades, and also includes:

[0065] The transmission mechanism 200 includes a turbine main shaft 201, an upper end of the turbine main shaft 201 is rotatably connected to an air intake sleeve 202, and a carbon brush slip ring 203 is installed on the outside of the turbine main shaft 201;

[0066] The assembled fan blades are installed outside the main shaft 201 of the turbine;

[0067] The protection mechanism 300 covers the outside of the transmission mechanism 200 .

[0068] Furthermore, the protection mechanism 300 includes an outer cover 301 , an air inlet 302 is provided at the outer periphery of the outer cover 301 near the bottom, an air outlet 303 is provided on the upper surface of the outer cover 301 , and an inspection door 304 is rotatably installed on the outer side of the outer cover 301 .

[0069] Specifically, the other end of the turbine main shaft 201 is installed on the turbine generator. The turbine main shaft 201 is driven to rotate by water flow. The assembled fan blades are installed on the turbine main shaft 201. The assembled fan blades rotate with the turbine main shaft 201 without additional energy consumption. The air in the slip ring chamber is forced to circulate externally, and the air has the characteristics of simple structure, easy maintenance, and good heat dissipation. The service life of the electrical equipment in the slip ring chamber of the turbine generator set is effectively improved. At the same time, the air flow in the slip ring chamber can also reduce the accumulation of carbon powder generated by the wear of the excitation carbon brush, thereby preventing the electrical equipment from short circuiting.

[0070] The rest of the structure is the same as that of Example 2.

[0071] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0072] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0073] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An assembled fan blade, characterized in that: include: The fan blade body (100) comprises a split fixing mechanism (101), wherein blades (102) are equidistantly arranged on the outer circumference of the split fixing mechanism (101), and the split fixing mechanism (101) and the blades (102) are connected via a connection mechanism (103); The split fixing mechanism (101) comprises a fixing ring (101a) and fastening rings (101b) threadedly connected to both ends of the fixing ring (101a).

2. The assembled fan blade according to claim 1, characterized in that: The fixing ring (101a) comprises an enclosure block 1 (101a-1) and an enclosure block 2 (101a-2).

3. The assembled fan blade according to claim 2, characterized in that: Arc plates (101a-3) are fixed on both sides of the enclosure block 1 (101a-1) and the enclosure block 2 (101a-2), and tapered thread grooves (101a-4) are provided on the outer sides of the arc plates (101a-3).

4. The assembled fan blade according to claim 3, characterized in that: The fastening ring (101b) comprises a half ring block 1 (101b-1) and a half ring block 2 (101b-2), both ends of the half ring block 1 (101b-1) and the half ring block 2 (101b-2) are fixed with fixing ears (101b-3), and the inner sides of the half ring block 1 (101b-1) and the half ring block 2 (101b-2) are provided with conical internal thread grooves (101b-4).

5. The assembled fan blade according to claim 4, characterized in that: The connection mechanism (103) comprises a fixing seat (103a), a mounting groove (103b) is provided on the outer side of the fixing seat (103a), a mounting plate (103c) is rotatably connected to the inner side of the mounting groove (103b), a notch (103d) is provided on the upper surface of the mounting plate (103c), and an angle adjustment component (103e) for adjusting the angle of the mounting plate (103c) is installed on the mounting plate (103c).

6. The assembled fan blade according to claim 5, characterized in that: The angle adjustment component (103e) comprises a strip-shaped through slot (103e-1) symmetrically extending through the two ends of the mounting plate (103c) and a bolt (103e-2) threadedly connected to the fixing seat (103a); the end of the bolt (103e-2) is rotatably connected to a strip-shaped block (103e-3) passing through the strip-shaped through slot (103e-1); both sides of the end of the strip-shaped block (103e-3) are rotatably connected to abutment blocks (103e-4); and the abutment blocks (103e-4) are attached to the bottom surface of the mounting plate (103c).

7. The assembled fan blade according to claim 6, characterized in that: An arc groove (103e-5) is formed through the surface of the abutting block (103e-4), and a guide column (103e-6) that penetrates the arc groove (103e-5) is fixed on the side surface of the strip block (103e-3).

8. The assembled fan blade according to claim 7, characterized in that: A gear ring (103e-7) is fixed to the rotating end of the bolt (103e-2), and an elastic clamp (103e-8) is provided on one side of the gear ring (103e-7).

9. A slip ring chamber for a turbine generator set that facilitates ventilation and cooling, characterized in that: The assembled fan blade according to any one of claims 1 to 8 further comprises: The transmission mechanism (200) comprises a turbine main shaft (201), the upper end of the turbine main shaft (201) is rotatably connected to an air intake sleeve (202), and a carbon brush slip ring (203) is installed outside the turbine main shaft (201); The assembled fan blades are installed outside the main shaft (201) of the water turbine; The protection mechanism (300) covers the outside of the transmission mechanism (200).

10. The slip ring chamber for a turbine generator set that is convenient for ventilation and cooling as claimed in claim 9, characterized in that: The protection mechanism (300) comprises an outer cover (301), an air inlet (302) is provided on the outer periphery of the outer cover (301) near the bottom, an air outlet (303) is provided on the upper surface of the outer cover (301), and an inspection door (304) is rotatably mounted on the outer side of the outer cover (301).

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