Installation structure and installation method of steam turbine generator

Abstract

The invention relates to the technical field of generator installation structures, in particular to an installation structure and installation method of a steam turbine generator, the installation structure comprises a base and a sealed cabin, a shell is fixedly connected with a supporting seat, the base is provided with an installation groove matched with the supporting seat, the bottom of the installation groove is provided with an adjusting groove, and the adjusting groove is provided with an adjusting groove. An adjusting mechanism is arranged in the adjusting groove, and the adjusting mechanism is matched with the supporting seat to be used for adjusting the position of the supporting seat; the adjusting mechanism comprises a moving seat and a driving assembly, a positioning protrusion is fixedly arranged on the moving seat, a positioning hole matched with the positioning protrusion is formed in the supporting seat, the positions of the supporting seat and the shell are adjusted through the adjusting mechanism, and during adjustment, the moving seat is driven by the driving assembly to move, so that the supporting seat is fixed to the shell. The positioning protrusions on the movable seat are inserted into the positioning holes in the supporting seat, so that the movable seat and the supporting seat form an integral structure, when the movable seat moves, the supporting seat and the shell can move along with the movable seat to adjust the position, and welding is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of generator installation structures, and in particular to an installation structure and an installation method for a steam turbine generator. Background Art

[0002] A steam turbine generator is a generator driven by a steam turbine. The superheated steam generated by the boiler enters the steam turbine and expands to do work, causing the blades to rotate and drive the generator to generate electricity. The exhaust steam after doing work is sent back to the boiler for recycling through the condenser, circulating water pump, condensate pump, feed water heating device, etc. A steam turbine generator is a generator matched with a steam turbine. Its speed is usually 3000 rpm (frequency is 50 Hz) or 3600 rpm (frequency is 60 Hz). In order to reduce the mechanical stress caused by centrifugal force and reduce wind wear, the rotor diameter of high-speed steam turbine generators is generally small and the length is large (i.e., slender rotor). This slender rotor limits the rotor size of large high-speed steam turbine generators.

[0003] The existing steam turbine generator is usually installed by using a lifting device to lift the steam turbine generator to the vicinity of the position, and then finely adjust the steam turbine generator. After the steam turbine generator falls on the installation structure, it is difficult to adjust due to the heavy weight of the steam turbine generator. Some installation structures of steam turbine generators are provided with rollers to facilitate the movement of the steam turbine generator. For example, Chinese patent announcement No. CN116857025A discloses a "lateral installation structure of a thermal power steam turbine generator set", which transports the steam turbine generator through the mutual cooperation of multiple structures, and allows the user to adjust the position of the steam turbine generator with high precision, so that the installation structure can achieve high-precision installation of the steam turbine generator, and improve the installation accuracy of the installation structure;

[0004] However, in actual use, due to the heavy weight of the steam turbine generator, it is difficult to fine-tune and align its position, which affects subsequent welding steps and is prone to defects. In addition, a lot of time is required during alignment, affecting the efficiency of installation. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that the fine-tuning and alignment of the steam turbine generator is difficult, defects are easily generated, a lot of time is required, and the efficiency of installation is affected, and the installation structure and method of the steam turbine generator are proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] Design a mounting structure for a steam turbine generator, including a base and a sealed cabin, wherein the sealed cabin includes two shells, each of which is fixedly connected to a support seat, the base is provided with a mounting groove matched with the support seat, the bottom of the mounting groove is provided with an adjustment groove, an adjustment mechanism is provided in the adjustment groove, and the adjustment mechanism cooperates with the support seat to adjust the position of the support seat;

[0008] The adjusting mechanism comprises a moving seat and a driving assembly. The moving seat is fixedly provided with a positioning protrusion, and the supporting seat is provided with a positioning hole matched with the positioning protrusion.

[0009] Furthermore, the movable seat includes a base and a lifting seat, the base is provided with a lifting mechanism, and the output end of the lifting mechanism is connected to the lifting seat.

[0010] Furthermore, a guide hole is provided on the base, a guide column is fixedly provided on the lower end of the lifting seat, and the guide column is movably plugged into the guide hole.

[0011] Furthermore, the lifting mechanism includes a moving block and a fixed block, the fixed block is fixedly connected to the lifting seat, and the moving block is slidably connected to the base.

[0012] Furthermore, a protrusion is fixedly provided on the movable block, a slope is provided on one side of the protrusion, and a slot matching with the protrusion is provided on the fixed block.

[0013] Furthermore, a first motor is fixedly arranged on the base, an output shaft of the first motor is fixedly connected with a screw rod, and the screw rod is threadedly connected to the moving block.

[0014] Furthermore, the driving assembly includes a second motor and two screw rods connected to the power of the second motor, a guide groove matching the screw rod is opened in the adjustment groove, a guide part matching the guide groove is fixedly arranged on the base, and the guide part is threadedly connected to the screw rod.

[0015] Furthermore, a first gear is fixedly provided on the output shaft of the second motor, a second gear is fixedly provided on the screw rod, and the first gear is connected to the two second gears through a chain power.

[0016] Furthermore, a brush is provided on the movable seat, a cushion block is fixedly provided on the lower end of the base, and an ash discharge port is provided on the adjusting groove.

[0017] The present invention also provides a method for installing a steam turbine generator, comprising the above-mentioned steam turbine generator installation structure, and further comprising the following steps:

[0018] S1. First, lift the shell to the top of the base, and then move the shell down to the support seat and connect it to the installation slot;

[0019] S2, controlling the movable seat to move to the bottom of the supporting seat through the driving assembly, controlling the lifting seat to move upward and abut against the supporting seat through the lifting mechanism, and plugging the positioning protrusion into the positioning hole to form an integral structure with the supporting seat;

[0020] S3. Control the movement of the moving seat through the driving assembly to drive the support seat and the shell to move, and tightly connect the two shells to form a sealed cabin for installing the steam turbine generator.

[0021] The installation structure of the steam turbine generator proposed by the present invention has the following beneficial effects:

[0022] In the present invention, the positions of the support seat and the shell are adjusted by the adjustment mechanism. During the adjustment, the moving seat is driven to move by the driving assembly, and the positioning protrusion on the moving seat is inserted into the positioning hole on the supporting seat, so that the moving seat and the supporting seat become an integral structure. When the moving seat moves, the supporting seat and the shell will move accordingly to adjust the position, and will not deviate from the moving track of the moving seat, so that the alignment is easier and more accurate, defects are avoided, and welding is convenient;

[0023] Secondly, in the present invention, the position of the lifting seat is controlled by the lifting mechanism. When the support seat needs to be moved, the lifting seat moves up and the positioning protrusion is inserted into the positioning hole on the support seat, so that the moving seat and the support seat become an integral structure. When the support seat does not need to be moved, the lifting seat moves down and the positioning protrusion is separated from the positioning hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the installation structure of the steam turbine generator proposed by the present invention;

[0025] Figure 2 It is a structural schematic diagram of the base of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the enlarged A area of ​​the present invention;

[0027] Figure 4 It is a structural schematic diagram of the screw rod of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the lifting mechanism of the present invention;

[0029] Figure 6 It is a schematic diagram of the enlarged structure of region B of the present invention.

[0030] In the figure: 1. base; 2. sealed cabin; 21. shell; 3. support seat; 4. mounting slot; 5. adjustment slot; 6. adjustment mechanism; 61. moving seat; 611. base; 612. lifting seat; 613. guide column; 62. driving assembly; 621. second motor; 622. screw rod; 623. guide part; 624. first gear; 625. second gear; 63. positioning protrusion; 7. lifting mechanism; 71. moving block; 711. protrusion; 72. fixed block; 73. first motor; 731. screw rod; 8. brush; 9. pad. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Reference Figure 1-6 The installation structure of the steam turbine generator comprises a base 1 and a sealed cabin 2. The sealed cabin 2 comprises two shells 21. The shells 21 are fixedly connected with support seats 3. The base 1 is provided with a mounting groove 4 matched with the support seat 3. The bottom of the mounting groove 4 is provided with an adjustment groove 5. An adjustment mechanism 6 is arranged in the adjustment groove 5. The adjustment mechanism 6 cooperates with the support seat 3 to adjust the position of the support seat 3;

[0033] The adjusting mechanism 6 includes a moving seat 61 and a driving assembly 62 . The moving seat 61 is fixedly provided with a positioning protrusion 63 . The supporting seat 3 is provided with a positioning hole matched with the positioning protrusion 63 .

[0034] In the present invention, the moving seat 61 is driven to move by the driving assembly 62, and the positioning protrusion 63 on the moving seat 61 is inserted into the positioning hole on the support seat 3, so that the moving seat 61 and the support seat 3 become an integral structure. When the moving seat 61 moves, the support seat 3 and the shell 21 will move accordingly to adjust the position and will not deviate from the moving trajectory of the moving seat 61, so that the alignment of the shell 21 is easier and more accurate, defects are avoided, and welding is convenient.

[0035] Furthermore, in the present embodiment, the movable seat 61 includes a base 611 and a lifting seat 612. A lifting mechanism 7 is provided on the base 611. The output end of the lifting mechanism 7 is connected to the lifting seat 612. The position of the lifting seat 612 is controlled by the lifting mechanism 7. When the support seat 3 needs to be moved, the lifting seat 612 moves up, and the positioning protrusion 63 is inserted into the positioning hole on the support seat 3, so that the movable seat 61 and the support seat 3 become an integral structure. When the support seat 3 does not need to be moved, the lifting seat 612 moves down, and the positioning protrusion 63 is separated from the positioning hole.

[0036] In this embodiment, a guide hole is opened on the base 611, and a guide column 613 is fixedly set at the lower end of the lifting seat 612. The guide column 613 is movably plugged into the guide hole. Through the cooperation between the guide column 613 and the guide hole, the base 611 and the lifting seat 612 become an integral structure and can move simultaneously. In some embodiments, a telescopic rod can also be set between the base 611 and the lifting seat 612.

[0037] Furthermore, in the present embodiment, the lifting mechanism 7 includes a moving block 71 and a fixed block 72. The fixed block 72 is fixedly connected to the lifting seat 612, and the moving block 71 is slidably connected to the base 611. When the moving block 71 moves, the fixed block 72 is lifted to drive the lifting seat 612 to move upward. When the moving block 71 is reset, under the action of gravity, the fixed block 72 and the lifting seat 612 move downward and reset.

[0038] In this embodiment, a protrusion 711 is fixedly provided on the moving block 71, and a slope is provided on one side of the protrusion 711. A slot matching with the protrusion 711 is provided on the fixed block 72. When the moving block 71 moves, the slope of the protrusion 711 abuts against the slot, forcing it to move upward and driving the lifting seat 612 to move upward.

[0039] It should be noted that, in this embodiment, a first motor 73 is fixedly provided on the base 611, and the output shaft of the first motor 73 is fixedly connected with a screw 731, which is threadedly connected to the moving block 71. The screw 731 is driven by the first motor 73 to rotate to control the position of the moving block 71. The first motor 73 is a stepping motor or a servo motor.

[0040] In addition, in this embodiment, the driving component 62 includes a second motor 621 and two screw rods 622 that are power-connected to the second motor 621. A guide groove that matches the screw rod 622 is opened in the adjustment groove 5. A guide portion 623 that matches the guide groove is fixedly provided on the base 611. The guide portion 623 is threadedly connected to the screw rod 622. The two screw rods 622 are driven to rotate by the second motor 621, and the two screw rods 622 drive the guide portion 623 to move. Since the guide portion 623 is fixedly provided on the base 611, it will synchronously drive the base 611 to move, thereby driving the moving seat 61 to move.

[0041] In detail, in this embodiment, the output shaft of the second motor 621 is fixedly provided with a first gear 624, and the screw rod 622 is fixedly provided with a second gear 625. The first gear 624 is connected to the two second gears 625 by chain power. The outer diameter of the first gear 624 is greater than or equal to the outer diameter of the second gear 625, so as to avoid slipping.

[0042] In more detail, in some embodiments, a brush 8 is provided on the movable seat 61, a pad 9 is fixedly provided at the lower end of the base 1, and a dust discharge port is opened on the adjustment slot 5. The dust is brushed away by the brush 8 to avoid affecting the movement of the movable seat 61.

[0043] The present invention also provides a method for installing a steam turbine generator, including the installation structure of the steam turbine generator, and further comprising the following steps:

[0044] S1, first lift the shell 21 to the top of the base 1, and move the shell 21 down to the support base 3 and connect it to the installation groove 4;

[0045] S2. The driving assembly 62 controls the moving seat 61 to move to the bottom of the supporting seat 3. The first motor 73 drives the screw rod 731 to rotate and control the position of the moving block 71. The inclined surface of the protrusion 711 abuts against the slot, forcing it to move upward and driving the lifting seat 612 to move upward. The positioning protrusion 63 is inserted into the positioning hole on the supporting seat 3, so that the moving seat 61 and the supporting seat 3 become an integral structure.

[0046] S3. The second motor 621 drives the first gear 624 to rotate and cooperate with the chain to drive the two second gears 625 and the screw 622 to rotate, and then drive the guide part 623 to move. Since the guide part 623 is fixedly arranged on the base 611, it will synchronously drive the base 611 to move, thereby driving the moving seat 61 to move, driving the support seat 3 and the shell 21 to move, and tightly connecting the two shells 21 to form a sealed cabin 2 for installing the steam turbine generator.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steam turbine generator installation structure, comprising a base (1) and a sealed cabin (2), characterized in that: The sealed cabin (2) comprises two shells (21), each of which is fixedly connected to a support seat (3), the base (1) is provided with a mounting groove (4) matched with the support seat (3), the bottom of the mounting groove (4) is provided with an adjustment groove (5), an adjustment mechanism (6) is arranged in the adjustment groove (5), and the adjustment mechanism (6) cooperates with the support seat (3) to adjust the position of the support seat (3); The adjustment mechanism (6) comprises a movable seat (61) and a driving assembly (62); the movable seat (61) is fixedly provided with a positioning protrusion (63); and the support seat (3) is provided with a positioning hole matched with the positioning protrusion (63).

2. The installation structure of the steam turbine generator according to claim 1, characterized in that: The movable seat (61) comprises a base (611) and a lifting seat (612); a lifting mechanism (7) is arranged on the base (611); and an output end of the lifting mechanism (7) is connected to the lifting seat (612).

3. The installation structure of the steam turbine generator according to claim 2, characterized in that: A guide hole is provided on the base (611), and a guide column (613) is fixedly provided at the lower end of the lifting seat (612), and the guide column (613) is movably plugged into the guide hole.

4. The installation structure of the steam turbine generator according to claim 2, characterized in that: The lifting mechanism (7) comprises a moving block (71) and a fixed block (72); the fixed block (72) is fixedly connected to the lifting seat (612); and the moving block (71) is slidably connected to the base (611).

5. The installation structure of the steam turbine generator according to claim 4, characterized in that: A protrusion (711) is fixedly provided on the moving block (71), a slope is provided on one side of the protrusion (711), and a slot matching the protrusion (711) is provided on the fixed block (72).

6. The installation structure of the steam turbine generator according to claim 5, characterized in that: A first motor (73) is fixedly arranged on the base (611); an output shaft of the first motor (73) is fixedly connected to a screw rod (731); and the screw rod (731) is threadedly connected to the moving block (71).

7. The installation structure of the steam turbine generator according to claim 2, characterized in that: The driving assembly (62) comprises a second motor (621) and two screw rods (622) connected to the second motor (621) by power, a guide groove matched with the screw rod (622) is provided in the adjustment groove (5), a guide portion (623) matched with the guide groove is fixedly provided on the base (611), and the guide portion (623) is threadedly connected to the screw rod (622).

8. The installation structure of the steam turbine generator according to claim 7, characterized in that: The output shaft of the second motor (621) is fixedly provided with a first gear (624), the screw rod (622) is fixedly provided with a second gear (625), and the first gear (624) and the two second gears (625) are connected by chain power.

9. The installation structure of the steam turbine generator according to claim 1, characterized in that: The movable seat (61) is provided with a brush (8), a cushion block (9) is fixedly provided at the lower end of the base (1), and an ash discharge port is provided on the adjustment groove (5).

10. A method for installing a steam turbine generator, comprising the installation structure of the steam turbine generator according to claims 1 to 9, characterized in that: The following steps are also included: S1, first lift the housing (21) to the top of the base (1), and then move the housing (21) down to the support base (3) and connect it to the mounting groove (4); S2, controlling the movable seat (61) to move to the bottom of the support seat (3) through the driving assembly (62), controlling the lifting seat (612) to move upward to abut against the support seat (3) through the lifting mechanism (7), and plugging the positioning protrusion (63) into the positioning hole to form an integral structure with the lifting seat (612) and the support seat (3); S3, controlling the movement of the moving seat (61) through the driving assembly (62) to drive the support seat (3) and the shell (21) to move, and tightly connecting the two shells (21) to form a sealed cabin (2) for installing the steam turbine generator.

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