Magnetic leakage prevention induced draft cover of high-water-head vertical water-turbine generator set

Abstract

The utility model discloses a high-water-head vertical water-turbine generator set magnetic leakage prevention induced draft cover which comprises a generator body, a generator stator is installed in the generator body, fixing rods are fixedly connected to the positions, located at the upper end and the lower end of the generator stator, in the generator body through screws, and fixing plates are arranged at the ends of the fixing rods. The fixed plate is connected with a magnetic-leakage-proof air inducing cover, the magnetic-leakage-proof air inducing cover is formed by splicing four air cover petals with the same specification, the four adjacent air cover petals are in butt joint end to end, and a first splicing plate is arranged at one end of each air cover pet.The magnetic-leakage-proof air inducing cover has the advantages that the magnetic-leakage-proof air inducing cover is divided into the four equal air cover petals, so that the magnetic-leakage-proof air inducing cover is convenient to move and carry; and during assembly, the second splicing plates and the first splicing plates on the two adjacent fan cover petals only need to be spliced through the trapezoidal blocks and the trapezoidal grooves, and stable connection of the two adjacent fan cover petals can be ensured through cooperation of the locking blocks and the positioning rods, so that the structure is compact, the operation is convenient, and the disassembly and assembly work of personnel is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to vertical water turbine generator set magnetic flux leakage prevention induced draft cover technical field, concretely relates to a kind of high water head vertical water turbine generator set magnetic flux leakage prevention induced draft cover. BACKGROUND

[0002] Water turbine generator is the main power equipment of the production electric energy of hydropower station, it is the generator that water turbine is original motor and converts water energy into electric energy, water flow passes through water turbine, water energy is converted into mechanical energy, the rotating shaft of water turbine drives the rotor of generator, and mechanical energy is converted into electric energy output, water turbine generator can be divided into vertical and horizontal two types according to axis position

[0003] Among them, to avoid high water head vertical water turbine generator set magnetic flux leakage at stator end, overcome the design defects of high water head, high speed water turbine generator set, the magnetic flux leakage prevention induced draft cover is installed at the two ends of vertical water turbine generator set, since the volume of vertical water turbine generator set is relatively large, the whole corresponding magnetic flux leakage prevention induced draft cover is inconvenient to move and carry, therefore, the magnetic flux leakage prevention induced draft cover is divided into several equal parts, before installation, the several equal parts of induced draft cover component are fixed and spliced into a whole structure by bolt, but the splicing mode of magnetic flux leakage prevention induced draft cover by bolt is time-consuming and laborious in actual operation, and is inconvenient to install and disassemble and maintain in later period. Therefore, a high water head vertical water turbine generator set magnetic flux leakage prevention induced draft cover is provided to solve the above problems. SUMMARY

[0004] To solve the problems in the above background art, the technical solution adopted by the utility model to solve the technical problems is: a high water head vertical water turbine generator set magnetic flux leakage prevention induced draft cover, comprising: a generator main body, the generator main body is internally provided with a generator stator, the generator main body is internally provided with a fixed rod fixedly connected to the upper and lower ends of the generator stator by screws, a fixed plate is arranged at the end of the fixed rod, the fixed plate is connected with a magnetic flux leakage prevention induced draft cover, the magnetic flux leakage prevention induced draft cover is composed of four wind cover petals of the same specification, the four wind cover petals are abutted end to end between adjacent ones, a first splicing plate is arranged at one end of the wind cover petal, a second splicing plate is arranged at the other end of the wind cover petal, a trapezoidal block is arranged on the side of the second splicing plate opposite to the first splicing plate, and a trapezoidal groove is formed in the end of the first splicing plate opposite to the trapezoidal block.

[0005] As a preferred technical solution of the utility model, the number of magnetic flux leakage prevention induced draft covers is two, and the two magnetic flux leakage prevention induced draft covers are respectively located at the upper and lower ends of the generator stator.

[0006] As a preferred technical solution of the utility model, the trapezoidal block is matched with the trapezoidal groove, a lock groove is formed between the first splicing plate and the second splicing plate, and a lock block is slidably inserted into the lock groove.

[0007] As a preferred technical scheme of the utility model, the lock block is located at one end of the second splicing plate and a positioning hole is formed, the lock block is made of non-ferromagnetic stainless steel.

[0008] As a preferred technical scheme of the utility model, the fixed seat is connected to the fixed plate through stainless steel screws, and the number of the fixed plate and the fixed rod is same as that of the fixed seat.

[0009] As a preferred technical scheme of the utility model, a limiting groove is longitudinally formed on one side of the positioning hole in the second splicing plate, a limiting ring is connected to the inner wall of the limiting groove through sliding, the limiting ring is fixedly connected with a positioning rod, a spring is sleeved at one end of the positioning rod in the limiting groove, and the positioning rod penetrates the positioning hole.

[0010] The utility model has the advantages that the anti-leakage magnetic induced draft cover is divided into four equal parts, which is convenient to move and carry, and when assembling, only the second splicing plate and the first splicing plate on the adjacent two draft cover petals are spliced through the trapezoidal block and the trapezoidal groove, and the adjacent two draft cover petals can be stably connected through the cooperation of the lock block and the positioning rod, which is compact in structure, convenient to operate, convenient for personnel to disassemble and assemble, saves the traditional splicing mode through multiple bolts, saves time and effort. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the installation position structure schematic diagram of the anti-leakage magnetic induced draft cover of the preferred embodiment of the utility model;

[0012] Figure 2 It is the partial split structure schematic diagram of the anti-leakage magnetic induced draft cover of the preferred embodiment of the utility model;

[0013] Figure 3 It is the anti-leakage magnetic induced draft cover of the preferred embodiment of the utility model Figure 2 The enlarged schematic diagram of structure A;

[0014] Figure 4 It is the partial sectional view structure schematic diagram of the second splicing plate of the preferred embodiment of the utility model.

[0015] The reference signs are explained as follows: 1, generator main body; 2, fixed rod; 3, fixed plate; 4, draft cover; 5, fixed seat; 6, first splicing plate; 7, second splicing plate; 8, trapezoidal block; 9, trapezoidal groove; 10, lock groove; 11, lock block; 12, positioning hole; 13, limiting groove; 14, positioning rod; 15, limiting ring; 16, spring; 17, generator stator. DETAILED DESCRIPTION

[0016] The technical solutions of the utility model will be described clearly and completely below in combination with the drawings. In the description of the utility model, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model in a specific orientation, structure and operation. In addition, the terms "first", "second" and "third" are only for the purpose of description, and cannot be understood as indicating or implying the importance of the opposite.

[0017] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0018] The utility model will be further described below in combination with the drawings.

[0019] Please refer to Figures 1-4 , the utility model discloses a high head vertical type water turbine generator set anti-leakage magnetic air scoop, comprising: generator main body 1, the generator stator 17 is installed in the generator main body 1, the fixed rod 2 is fixedly connected in the generator main body 1 and is located at the upper and lower ends of the generator stator 17, the fixed plate 3 is arranged at the end of the fixed rod 2, the fixed plate 3 is connected with the anti-leakage magnetic air scoop, the anti-leakage magnetic air scoop is assembled by four same size air scoop petals 4, the first splicing plate 6 is arranged at one end of the air scoop petal 4, the second splicing plate 7 is arranged at the other end of the air scoop petal 4, the trapezoidal block 8 is arranged on one side of the first splicing plate 6 opposite the second splicing plate 7, and the trapezoidal groove 9 is formed in one end of the first splicing plate 6 opposite the trapezoidal block 8.

[0020] Combination Figure 1 And Figure 3 As shown in the drawings, wherein the number of anti-leakage magnetic air scoops is two, the two anti-leakage magnetic air scoops are located at the upper and lower ends of the generator stator 17, the trapezoidal block 8 is matched with the trapezoidal groove 9, the lock slot 10 is formed between the first splicing plate 6 and the second splicing plate 7, the lock block 11 is slidably inserted into the lock slot 10, the first splicing plate 6 and the second splicing plate 7 after splicing can be limited and locked through the lock block 11, the installation mode is simple and fast, the positioning hole 12 is formed in one end of the second splicing plate 7, and the lock block 11 is made of non-ferromagnetic stainless steel material.

[0021] Combining Figure 2 and Figure 4 As shown in the figure, the outer side of the wind cover 4 is connected with the fixing seat 5, the fixing seat 5 is fixedly connected to the fixing plate 3 through stainless steel screws, the number of the fixing plate 3 and the fixing rod 2 is same as the number of the fixing seat 5, the limit groove 13 is longitudinally arranged in the inside of the second splicing plate 7 opposite to one side of the positioning hole 12, the limit ring 15 is slidably connected to the inner wall of the limit groove 13, the positioning rod 14 is fixedly connected to the limit ring 15, the spring 16 is sleeved at one end of the positioning rod 14 in the inside of the limit groove 13, the positioning rod 14 penetrates the positioning hole 12, and the locking of the lock block 11 can be realized through cooperation of the positioning rod 14 and the positioning hole 12, so that it can be guaranteed that the lock block 11 cannot be automatically removed from the lock slot 10.

[0022] Specifically, when the anti-leakage magnetic air induction cover is spliced and assembled, only the second splicing plate 7 on one of the two adjacent wind cover 4 is butted with the first splicing plate 6 on the other wind cover 4, the trapezoidal block 8 on the second splicing plate 7 is slidably inserted into the trapezoidal groove 9 on the first splicing plate 6, then the positioning rod 14 is manually pulled upward, the lock block 11 is directly inserted into the lock slot 10 between the first splicing plate 6 and the second splicing plate 7, then the pulling of the positioning rod 14 is stopped, and the positioning rod 14 is automatically inserted into the positioning hole 12 on the lock block 11 through the elastic force of the spring 16, so that the lock block 11 can be limited and fixed, and the splicing and assembly of the two adjacent wind cover 4 can be completed.

[0023] The preferred embodiments of the utility model are described above, and it should be pointed out that some improvements and decorations can be made by the ordinary skilled in the art without departing from the principle of the utility model, and these improvements and decorations should also be regarded as the protection range of the utility model.

[0024] The other parts not described in detail in the utility model belong to the prior art, so they will not be described here.

[0025] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, the ordinary skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the range of the technical solutions of the embodiments of the utility model.

Claims

1. A high head vertical hydroelectric generator unit magnetic leakage prevention draft tube cover, comprising: The utility model provides an improved generator stator leakage magnetic prevention air scoop, which comprises a generator main body (1), a generator stator (17) is arranged in the generator main body (1), a fixed rod (2) is fixedly connected to the upper and lower ends of the generator stator (17) in the generator main body (1), a fixed plate (3) is arranged at the end of the fixed rod (2), a leakage magnetic prevention air scoop is connected to the fixed plate (3), the leakage magnetic prevention air scoop is composed of four air scoop petals (4) of the same size, the four air scoop petals (4) are connected end to end, a first splicing plate (6) is arranged at one end of the air scoop petals (4), a second splicing plate (7) is arranged at the other end of the air scoop petals (4), a trapezoidal block (8) is arranged on the side of the second splicing plate (7) opposite to the first splicing plate (6), and a trapezoidal groove (9) is formed in the first splicing plate (6) opposite to the trapezoidal block (8).

2. A high head vertical hydroelectric generating unit magnetic leakage prevention draft tube cover according to claim 1, characterized in that, The leakage magnetic prevention air scoop is arranged in two, and the two leakage magnetic prevention air scoops are arranged at the upper and lower ends of the generator stator (17).

3. A high head vertical hydroelectric generating unit magnetic leakage prevention draft tube cover according to claim 1, characterized in that, The trapezoidal block (8) is matched with the trapezoidal groove (9), a lock groove (10) is formed between the first splicing plate (6) and the second splicing plate (7), and a lock block (11) is slidably inserted into the lock groove (10).

4. A high head vertical hydroelectric generating unit magnetic leakage prevention draft tube cover according to claim 3, characterized in that, A positioning hole (12) is formed in one end of the lock block (11), and the lock block (11) is made of non-ferromagnetic stainless steel.

5. A high head vertical hydroelectric generating unit magnetic leakage prevention draft tube cover according to claim 1, characterized in that, A fixed seat (5) is connected to the outer side of the air scoop petals (4), the fixed seat (5) is fixedly connected to the fixed plate (3) by means of stainless steel screws, and the number of the fixed plate (3) and the fixed rod (2) is the same as that of the fixed seat (5).

6. A high head vertical hydroelectric generating unit magnetic leakage prevention draft tube cover according to claim 1, characterized in that, A limiting groove (13) is longitudinally formed in the side of the second splicing plate (7) opposite to the positioning hole (12), a limiting ring (15) is slidably connected to the inner wall of the limiting groove (13), the limiting ring (15) is fixedly connected to a positioning rod (14), a spring (16) is sleeved with the end of the positioning rod (14) in the limiting groove (13), and the positioning rod (14) penetrates the positioning hole (12).

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