Heat insulation structure for generator end cover

Abstract

The utility model relates to the technical field of generator heat insulation, and discloses a heat insulation structure for a generator end cover, which comprises an end cover body and a heat dissipation assembly which is detachably arranged on the end cover body, a plurality of heat dissipation grooves are arranged on the end cover body close to the outer edge in a penetrating manner and are annularly distributed relative to the end cover body; the end, close to the heat dissipation assembly, of the end cover body is fixedly provided with a connecting fence, the end, away from the heat dissipation assembly, of the connecting fence is provided with an air guide frame in an inserted mode, the frame, close to the connecting fence, of the air guide frame is designed in a beveling mode, and the connecting fence is provided with positioning bolts from top to bottom. According to the heat insulation structure for the generator end cover, when the air guide frame is installed, the insertion blocks are aligned with the insertion grooves of the connecting fences to be inserted until the air guide frame is completely embedded into the positioning grooves, the air guide frame can be conveniently, rapidly and accurately installed, the beveled frame design can guide airflow to smoothly pass through the heat dissipation grooves, and the heat dissipation efficiency of the end cover is improved; meanwhile, the insertion blocks are matched with the insertion grooves and the positioning grooves to prevent the air guide frame from shaking, and stable work of the air guide frame is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of generator heat insulation technology, specifically a heat insulation structure for generator end caps. Background Technology

[0002] Mechanical equipment that converts mechanical energy into electrical energy is generally called a generator. Generators are often driven by water turbines, steam turbines, diesel engines or other power machinery. They convert the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy and then transfer it to the generator, which then converts it into electrical energy. Generators are usually composed of components such as stators, rotors, end covers and bearings. In order to avoid damage to the generator terminals due to high temperatures during use, which would affect its normal operation, heat insulation structures are often used for generator end covers.

[0003] Chinese Utility Model Patent Publication No. CN218472892U discloses a generator end cover with a heat insulation structure. This end cover, through the cooperation between the generator housing and the generator end cover body, achieves a heat-insulating structure, which not only increases the generator's heat dissipation effect, thus ensuring stable operation, but also facilitates disassembly and assembly, making maintenance easier when the generator is damaged, thereby improving the practicality of this utility model. However, while this heat-insulating generator end cover improves heat dissipation, it lacks a flow guiding structure, making it difficult to guide airflow smoothly through the heat dissipation grooves, resulting in poor heat dissipation efficiency. Furthermore, its slow disassembly and assembly leads to cumbersome maintenance procedures and poor practicality. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a heat insulation structure for generator end caps, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by this utility model is: a heat insulation structure for generator end cover, including an end cover body and a heat dissipation component designed to be detachable on the end cover body. The end cover body has multiple heat dissipation grooves that are distributed in a ring around the end cover body near the outer edge. A connecting rail is fixedly installed at one end of the end cover body near the heat dissipation component. A wind guide is inserted and installed at the other end of the connecting rail away from the heat dissipation component. The wind guide is designed with a beveled edge near the frame of the connecting rail. Positioning bolts are provided on the connecting rail from top to bottom.

[0006] The heat dissipation assembly includes a heat dissipation plate. A second placement groove is provided on the inner surface of the heat dissipation plate in a ring shape. A first connecting pipe and a second connecting pipe are provided on the inner surface of the second placement groove and the two are interconnected. An outlet distribution valve is provided at one end of the first connecting pipe and the second connecting pipe located at the outer edge of the heat dissipation plate, and an inlet distribution valve is provided at the other end away from the outlet distribution valve.

[0007] Preferably, a connecting block is fixedly installed at the outer edge of the end cap body, a positioning hole is provided at the other end of the connecting block away from the end cap body, and a positioning seat is fixedly installed at the other end of the connecting block away from the end cap body. The connecting block, the positioning hole and the positioning seat are provided in two identical forms and are symmetrically distributed about the center line of the end cap body.

[0008] With the above technical solution, during installation, the connecting block with positioning hole one and positioning seat is fixed to the outer edge of the end cover body. Positioning hole one can be used to bolt to other components, and positioning seat assists in positioning, which facilitates stable assembly with external structure. The two connecting blocks are symmetrically distributed, which can make the end cover body bear force evenly, enhance the overall connection stability, and avoid installation deviation.

[0009] Preferably, the end of the connecting rail near the end cap body is provided with a slot and a positioning groove, and the end of the air guide frame near the connecting rail is fixedly installed with a plug, the plug being adapted to the slot, and the positioning groove being the same size as the air guide frame.

[0010] With the above technical solution, when installing the air guide frame, align its insert with the slot of the connecting bar and insert it until the air guide frame is fully embedded in the positioning groove. This makes it easy to install the air guide frame quickly and accurately. The beveled frame design can guide the airflow smoothly through the heat dissipation groove, improve the heat dissipation efficiency of the end cover, and at the same time, the cooperation between the insert, slot and positioning groove can prevent the air guide frame from shaking and ensure its stable operation.

[0011] Preferably, the connecting rail has a threaded hole 1 extending from top to bottom, the air guide has a threaded hole 2 extending from top to bottom, and the heat sink has a positioning hole 2 extending from top to bottom. The inner surfaces of the threaded hole 1, the threaded hole 2, and the positioning hole 2 are threadedly connected with positioning bolts.

[0012] With the above technical solution, when assembling the heat dissipation component with the connecting rail and air guide, the positioning bolt is passed through the positioning hole two, the threaded hole two and the threaded hole one in sequence and tightened to fix it; multiple sets of threaded holes and positioning holes cooperate with the positioning bolt to realize the detachable installation of the heat dissipation component, which is convenient for later maintenance and replacement.

[0013] Preferably, the threaded hole one, threaded hole two, positioning hole two, and positioning bolt are provided in two identical sets located on the same vertical horizontal line. Each set of threaded hole one, threaded hole two, positioning hole two, and positioning bolt is provided in two identical sets. The threaded hole one, threaded hole two, positioning hole two, and positioning bolt are distributed in a ring about the center line of the end cap body.

[0014] By utilizing the above technical solution and the design of multiple ring-shaped positioning bolts, the heat sink, air guide frame, and connecting rails can be secured from multiple directions, further enhancing the stability of the overall structure under high-speed generator operation, distributing stress, preventing component damage due to excessive local stress, and extending the service life of the equipment.

[0015] Preferably, the first connecting pipe, the second connecting pipe, the outlet distribution valve, and the inlet distribution valve are in a one-to-one correspondence, with one outlet distribution valve and one inlet distribution valve corresponding to three first connecting pipes and two connecting pipes.

[0016] Through the above technical solution, the cooling medium is diverted into three connecting pipes 1 and 2 via the inlet distribution valve. After circulating in the placement tank 2, it is collected and discharged by the outlet distribution valve. This increases the contact area between the cooling medium and the heat sink, improves the heat dissipation efficiency, and the multiple inlet and outlet designs allow for flexible adjustment of the cooling medium flow rate and control of the heat dissipation effect according to actual needs.

[0017] Preferably, a through groove 1 and a placement groove 1 are provided from top to bottom along the center line of the connecting rail, and a through groove 2 is provided from top to bottom along the center line of the heat sink, with bushings provided at the through groove 1 and through groove 2.

[0018] With the above technical solution, when installing the bushing, it is passed through through slot one and through slot two. The cooperation between the through slot and the bushing provides support and positioning for the generator shaft, ensuring the rotational stability of the shaft. At the same time, it keeps the heat sink and the connecting rail fixed in relative position in the axial direction, avoiding the normal operation of the heat dissipation components due to the rotation of the shaft.

[0019] Compared with the prior art, the present invention provides a heat insulation structure for generator end caps, which has the following beneficial effects:

[0020] 1. The generator end cover uses a heat insulation structure. When assembling the heat dissipation components with the connecting rail and air guide frame, the positioning bolts are passed through positioning hole two, threaded hole two and threaded hole one in sequence and tightened to fix them. Multiple sets of threaded holes and positioning holes cooperate with the positioning bolts to realize the detachable installation of the heat dissipation components, which is convenient for later maintenance and replacement.

[0021] 2. The generator end cover uses a heat insulation structure. The cooling medium is diverted into three connecting pipes 1 and 2 through the inlet distribution valve. After circulating in the placement tank 2, it is collected and discharged by the outlet distribution valve. This increases the contact area between the cooling medium and the heat sink, improves the heat dissipation efficiency, and the multiple inlet and outlet designs allow for flexible adjustment of the cooling medium flow rate and control of the heat dissipation effect according to actual needs.

[0022] 3. The generator end cover uses a heat insulation structure. When installing the air guide frame, align the insert with the slot of the connecting rail and insert it until the air guide frame is fully embedded in the positioning groove. This facilitates quick and accurate installation of the air guide frame. The beveled frame design guides airflow smoothly through the heat dissipation groove, improving the heat dissipation efficiency of the end cover. At the same time, the cooperation between the insert, slot, and positioning groove can prevent the air guide frame from shaking and ensure its stable operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0026] Figure 4 This is a schematic diagram of the end cap body and heat dissipation assembly of this utility model;

[0027] Figure 5 This is a schematic diagram of the explosive structure of this utility model. Figure 1 ;

[0028] Figure 6 This is a schematic diagram of the explosive structure of this utility model. Figure 2 ;

[0029] Figure 7 This is a cross-sectional structural diagram of the heat dissipation component of this utility model.

[0030] The components include: 1. End cap body; 2. Heat dissipation groove; 3. Connecting block; 4. Positioning hole one; 5. Positioning seat; 6. Connecting rail; 7. Slot; 8. Positioning groove; 9. Threaded hole one; 10. Through groove one; 11. Placement groove one; 12. Air guide frame; 13. Threaded hole two; 14. Insert block; 15. Positioning bolt; 16. Heat dissipation assembly; 1601. Heat dissipation plate; 1602. Through groove two; 1603. Positioning hole two; 1604. Inlet distribution valve; 1605. Connecting pipe one; 1606. Connecting pipe two; 1607. Outlet distribution valve; 1608. Placement groove two; 17. Bushing. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1: As Figure 1-7 As shown, the present invention provides a heat insulation structure for a generator end cover, including an end cover body 1 and a heat dissipation component 16 detachably designed on the end cover body 1. The end cover body 1 has multiple heat dissipation grooves 2 that are opened through the outer edge and are distributed in a ring around the end cover body 1. A connecting rail 6 is fixedly installed at one end of the end cover body 1 near the heat dissipation component 16. An air guide frame 12 is inserted and installed at the other end of the connecting rail 6 away from the heat dissipation component 16. The air guide frame 12 is designed with a beveled edge near the edge of the connecting rail 6. The connecting rail 6 is provided with positioning bolts 15 from top to bottom.

[0033] The heat dissipation assembly 16 includes a heat dissipation plate 1601. A second placement groove 1608 is provided through the inner surface of the heat dissipation plate 1601 in a ring-shaped arrangement. A first connecting pipe 1605 and a second connecting pipe 1606 are provided on the inner surface of the second placement groove 1608 and are interconnected. An outlet distribution valve 1607 is provided at one end of the first connecting pipe 1605 and the second connecting pipe 1606 at the outer edge of the heat dissipation plate 1601, and an inlet distribution valve 1604 is provided at the other end away from the outlet distribution valve 1607.

[0034] Specifically, a connecting block 3 is fixedly installed on the outer edge of the end cap body 1. A positioning hole 4 is opened at the other end of the connecting block 3 away from the end cap body 1. A positioning seat 5 is fixedly installed at the other end of the connecting block 3 away from the end cap body 1. There are two identical connecting blocks 3, positioning holes 4 and positioning seats 5, which are symmetrically distributed about the center line of the end cap body 1. The advantage is that during installation, the connecting block 3 with positioning holes 4 and positioning seats 5 is fixed on the outer edge of the end cap body 1. The positioning holes 4 can be bolted to other components. The positioning seats 5 assist in positioning, which facilitates stable assembly with the external structure. The symmetrical distribution of the two connecting blocks 3 can make the end cap body 1 bear force evenly, enhance the overall connection stability, and avoid installation deviation.

[0035] Specifically, the end of the connecting rail 6 near the end cap body 1 has a slot 7 and a positioning groove 8. The end of the air guide frame 12 near the connecting rail 6 has a fixed insert 14. The insert 14 is adapted to the slot 7. The positioning groove 8 is the same size as the air guide frame 12. The advantage is that when installing the air guide frame 12, the insert 14 is aligned with the slot 7 of the connecting rail 6 and inserted until the air guide frame 12 is fully embedded in the positioning groove 8. This makes it easy to install the air guide frame 12 quickly and accurately. The beveled frame design can guide the airflow smoothly through the heat dissipation groove 2, improving the heat dissipation efficiency of the end cap. At the same time, the cooperation between the insert 14 and the slot 7 and positioning groove 8 can prevent the air guide frame 12 from shaking and ensure its stable operation.

[0036] Specifically, the connecting rail 6 has a threaded hole 9 extending from top to bottom, the air guide frame 12 has a threaded hole 13 extending from top to bottom, and the heat sink 1601 has a positioning hole 1603 extending from top to bottom. The inner surfaces of the threaded holes 9, 13, and 1603 are threaded with positioning bolts 15. The advantage is that when assembling the heat sink assembly 16 with the connecting rail 6 and the air guide frame 12, the positioning bolts 15 are passed through the positioning hole 1603, 13, and 9 in sequence and tightened. The multiple sets of threaded holes and positioning holes, together with the positioning bolts 15, enable the heat sink assembly 16 to be detachably installed, facilitating later maintenance and replacement.

[0037] Example 2: Figure 2-7 As shown, this is an improvement on the previous embodiment.

[0038] Specifically, threaded hole 19, threaded hole 213, positioning hole 21603, and positioning bolt 15 are provided in two identical sets located on the same vertical horizontal line. Each set of threaded hole 19, threaded hole 213, positioning hole 21603, and positioning bolt 15 is provided in two identical sets. Threaded hole 19, threaded hole 213, positioning hole 21603, and positioning bolt 15 are arranged in a ring around the center line of the end cover body 1. The advantage is that by utilizing the design of multiple sets of ring-shaped positioning bolts 15, the heat sink 1601, the air guide frame 12, and the connecting rail 6 can be fastened from multiple directions, further enhancing the stability of the overall structure under high-speed generator operation, dispersing the stress, preventing component damage due to excessive local stress, and extending the service life of the equipment.

[0039] Specifically, connecting pipe 1605, connecting pipe 2 1606, outlet distribution valve 1607, and inlet distribution valve 1604 are in one-to-one correspondence. One outlet distribution valve 1607 and one inlet distribution valve 1604 correspond to three connecting pipes 1605 and 2 1606. The advantage is that the cooling medium is diverted through the inlet distribution valve 1604 into the three connecting pipes 1605 and 2 1606. After circulating in the placement tank 2 1608, it is collected and discharged by the outlet distribution valve 1607. This increases the contact area between the cooling medium and the heat sink 1601, improves the heat dissipation efficiency, and the multiple corresponding inlet and outlet designs allow for flexible adjustment of the cooling medium flow rate according to actual needs, controlling the heat dissipation effect.

[0040] Specifically, a through groove 10 and a placement groove 11 are provided from top to bottom along the center line of the connecting rail 6, and a through groove 2 1602 is provided from top to bottom along the center line of the heat sink 1601. Bushings 17 are provided at the through grooves 10 and 1602.

[0041] The advantage is that when installing the bushing 17, it passes through the through groove 10 and the through groove 2 1602. The cooperation between the through groove and the bushing 17 provides support and positioning for the generator shaft, ensuring the rotational stability of the shaft. At the same time, it keeps the heat sink 1601 and the connecting rail 6 in a fixed relative position in the axial direction, avoiding the impact of the shaft rotation on the normal operation of the heat sink 16.

[0042] Working Principle: During use, the connecting block 3 with positioning hole 4 and positioning seat 5 is fixed to the outer edge of the end cap body 1. Positioning hole 4 can be used for bolt connection with other components, while positioning seat 5 assists in positioning, facilitating stable assembly with external structures. The two connecting blocks 3 are symmetrically distributed, ensuring even force distribution on the end cap body 1, enhancing overall connection stability, and preventing installation misalignment. When assembling the heat dissipation component 16 with the connecting rail 6 and air guide frame 12, the positioning bolt 15 is passed sequentially through positioning hole 1603, threaded hole 13, and threaded hole 9, and tightened. Multiple sets of threaded holes and positioning holes, in conjunction with the positioning bolt 15, enable the detachable installation of the heat dissipation component 16, facilitating later maintenance and replacement. (The text repeats itself here.) The ring-shaped distribution design can secure the heat sink 1601, air guide frame 12, and connecting rail 6 from multiple directions, further enhancing the stability of the overall structure under high-speed generator operation, distributing stress, preventing component damage due to excessive local stress, and extending equipment service life. The cooling medium is diverted through the inlet distribution valve 1604 into the three connecting pipes 1605 and 1606, circulates in the second placement slot 1608, and is then collected and discharged by the outlet distribution valve 1607. This increases the contact area between the cooling medium and the heat sink 1601, improving heat dissipation efficiency. The multiple inlet and outlet corresponding designs allow for flexible adjustment of the cooling medium flow rate according to actual needs, controlling the heat dissipation effect. When installing the bushing 17, it is passed through the through slot 10 and through slot 2 1602. The cooperation between the through slot and the bushing 17 provides support and positioning for the generator shaft, ensuring the rotational stability of the shaft, while keeping the heat sink 1601 and the connecting rail 6 in a fixed relative position in the axial direction, preventing the rotation of the shaft from affecting the normal operation of the heat dissipation component 16.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat insulation structure for a generator end cover, comprising an end cover body (1) and a detachable heat dissipation assembly (16) located on the end cover body (1), characterized in that: The end cap body (1) has multiple heat dissipation slots (2) that are opened through the outer edge and are distributed in a ring around the end cap body (1). A connecting rail (6) is fixedly installed at one end of the end cap body (1) near the heat dissipation component (16). A guide frame (12) is inserted at the other end of the connecting rail (6) away from the heat dissipation component (16). The guide frame (12) is designed with a beveled edge near the edge of the connecting rail (6). The connecting rail (6) is provided with positioning bolts (15) from top to bottom. The heat dissipation assembly (16) includes a heat dissipation plate (1601). The inner surface of the heat dissipation plate (1601) is provided with a second placement groove (1608) arranged in a ring around the heat dissipation plate (1601). The inner surface of the second placement groove (1608) is provided with a first connecting pipe (1605) and a second connecting pipe (1606) that are interconnected. One end of the first connecting pipe (1605) and the second connecting pipe (1606) is provided with an outlet distribution valve (1607) located at the outer edge of the heat dissipation plate (1601), and the other end away from the outlet distribution valve (1607) is provided with an inlet distribution valve (1604).

2. The thermal barrier structure for an end cover of a generator according to claim 1, characterized in that: A connecting block (3) is fixedly installed on the outer edge of the end cap body (1). A positioning hole (4) is opened at the other end of the connecting block (3) away from the end cap body (1). A positioning seat (5) is fixedly installed at the other end of the connecting block (3) away from the end cap body (1). There are two identical connecting blocks (3), positioning holes (4) and positioning seats (5) that are symmetrically distributed about the center line of the end cap body (1).

3. The thermal barrier structure for an end cover of a generator according to claim 1, characterized by: The connecting rail (6) has a slot (7) and a positioning groove (8) at one end near the end cap body (1). The air guide frame (12) has a fixed plug (14) at one end near the connecting rail (6). The plug (14) is compatible with the slot (7). The positioning groove (8) is the same size as the air guide frame (12).

4. The thermal barrier structure for an end cover of a generator according to claim 1, characterized by: The connecting rail (6) has a threaded hole 1 (9) extending from top to bottom, the air guide frame (12) has a threaded hole 2 (13) extending from top to bottom, and the heat sink (1601) has a positioning hole 2 (1603) extending from top to bottom. The inner surfaces of the threaded hole 1 (9), the threaded hole 2 (13) and the positioning hole 2 (1603) are threaded with positioning bolts (15).

5. The heat shield structure for a generator end cover according to claim 4, characterized by: The threaded hole one (9), threaded hole two (13), positioning hole two (1603) and positioning bolt (15) are provided in two identical sets located on the same vertical horizontal line. Each set of threaded hole one (9), threaded hole two (13), positioning hole two (1603) and positioning bolt (15) is provided in two identical sets. The threaded hole one (9), threaded hole two (13), positioning hole two (1603) and positioning bolt (15) are distributed in a ring about the center line of the end cap body (1).

6. The thermal barrier structure for an end cover of a generator according to claim 1, characterized by: The first connecting pipe (1605), the second connecting pipe (1606), the outlet distribution valve (1607), and the inlet distribution valve (1604) are in one-to-one correspondence. One outlet distribution valve (1607) and one inlet distribution valve (1604) correspond to three connecting pipes (1605) and three connecting pipes (1606).

7. The thermal barrier structure for an end cover of a generator according to claim 1, characterized by: The connecting rail (6) has a through groove (10) and a placement groove (11) running from top to bottom along the center line. The heat sink (1601) has a through groove (1602) running from top to bottom along the center line. A bushing (17) is provided at the through groove (10) and the through groove (1602).

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