Air inlet structure for steam turbine

Abstract

The utility model relates to the technical field of steam turbines, and discloses an air inlet structure for a steam turbine, which comprises a steam turbine body, the front surface of the steam turbine body is fixedly connected with a main shaft, the surface of the main shaft is fixedly connected with a bearing, and the surface of the main shaft is fixedly connected with a moving blade. And the right end of the steam turbine body is fixedly connected with a connecting pipe. According to the device, the limiting clamping plate is rotated to be far away from the surface of the steam turbine body, the sliding plate is pushed to drive the limiting clamping plate to conduct sliding adjustment on the front-back position in the distance adjusting sliding rod, and the fixing screw rod is rotated to be taken out from the interiors of the mounting frame and the supporting vertical plate; and by arranging an installation clamping ring and a connecting clamping ring, the worker can conveniently connect and fix an external pipeline of the whole device, and the operation convenience of the device in the using process is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam turbine technical field especially relates to an air intake structure for steam turbine. BACKGROUND

[0002] Steam turbine is also called steam turbine engine, is a kind of rotary steam power device, high temperature and high pressure steam becomes accelerated airflow after passing through fixed nozzle and is injected to blade, makes the rotor that is equipped with blade row rotate, simultaneously does work to outside.Steam turbine is the main equipment of modern thermal power plant, is also used in metallurgical industry, chemical industry, ship power device, steam turbine is a kind of rotary steam power device that steam heat energy is converted into mechanical energy.

[0003] The air intake structure for steam turbine is inconvenient for workers to conveniently install and dismount the whole equipment according to the actual installation position of the whole equipment when the workers use the whole equipment. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides an air intake structure for steam turbine.

[0005] The utility model discloses the following technical scheme realizes: an air intake structure for steam turbine, including steam turbine body, the front surface fixedly connected with main shaft of steam turbine body, the surface fixedly connected with bearing of main shaft, the surface fixedly connected with dynamic blade of main shaft, the right -hand member fixedly connected with connecting pipe of steam turbine body,

[0006] The right -hand member fixedly connected with installation snap ring of connecting pipe, the right -hand member is connected with the connecting snap ring of installation snap ring, the left and right ends of steam turbine body are equipped with the installation groove, the inside sliding connection of installation groove has support vertical board, the top fixedly connected with support vertical board of steam turbine body, the inside screw thread connection of support vertical board has fixed screw rod, the surface screw thread connection of fixed screw rod has mounting bracket, the surface fixedly connected with distance adjustment slide bar of mounting bracket, the inside sliding connection of distance adjustment slide bar has sliding plate, the surface fixedly connected with limit stop plate of sliding plate, the inside screw thread connection of limit stop plate has limit stop screw.

[0007] Through the above technical scheme, the bearing located in the inside of steam turbine body and contacting with the front surface can accurately position the main shaft, reduce the radial and axial deviation of the main shaft when rotating at high speed, which helps to improve the matching accuracy between the dynamic blade and the static blade, thereby improving the energy conversion efficiency.

[0008] As a further improvement of the above scheme, the bearing is located in the inside of the steam turbine body, the rear end of the bearing contacts with the front surface of the steam turbine body, and the installation snap ring is located at the top end of the steam turbine body.

[0009] Through the technical scheme, as a key component of energy transmission, the rotating mechanical energy generated by the steam pushing the moving blade is effectively transmitted, in the power generation scene, the main shaft is connected with the generator rotor, so that the mechanical energy of the steam turbine is converted into electric energy.

[0010] A stable central shaft is provided for the rotation of the entire steam turbine, ensuring that the moving blade, bearing and other components can work cooperatively, and the stability of the entire device is ensured.

[0011] As a further improvement of the above scheme, the number of installation grooves is four, and each two is a group, and the four installation grooves are distributed symmetrically left and right around the steam turbine body.

[0012] As a further improvement of the above scheme, the mounting bracket is slidingly connected inside the steam turbine body, and the number of mounting brackets is two, and the two mounting brackets are distributed symmetrically left and right around the steam turbine body.

[0013] Through the technical scheme, the fixed screw penetrating the mounting bracket and the supporting vertical plate and distributed symmetrically left and right around the steam turbine body can firmly connect the mounting bracket and the supporting vertical plate together, and this connection mode ensures the integrity of the structure and prevents loosening between components during operation of the steam turbine.

[0014] As a further improvement of the above scheme, the fixed screw penetrates the mounting bracket and the supporting vertical plate and extends to one end, and the fixed screw is distributed symmetrically left and right around the steam turbine body.

[0015] As a further improvement of the above scheme, the number of distance adjusting slide rods is several, and each four is a group, and the several distance adjusting slide rods are distributed symmetrically left and right around the steam turbine body.

[0016] As a further improvement of the above scheme, the number of limiting clamping plates is several, and each four is a group, and the several limiting clamping plates are distributed symmetrically left and right around the steam turbine body.

[0017] Compared with the prior art, the beneficial effects of the present application are as follows:

[0018] The present application sets the rotating limiting clamping plate away from the surface of the steam turbine body, and the sliding plate can drive the limiting clamping plate to slide and adjust the position inside the distance adjusting slide rod, and the rotating fixed screw is rotated and taken out from the inside of the mounting bracket and the supporting vertical plate, so that the staff can conveniently install and dismount the mounting bracket installed at the left and right ends of the steam turbine body, and the installation clamping ring and the connecting clamping ring are set to facilitate the staff to connect and fix the external pipeline of the entire device, and the operation convenience of the device during use is increased.

[0019] The utility model discloses a cooperation of setting up mounting bracket and fixed screw rod etc. parts makes its position can be adjusted according to need, and then can adapt to the requirement of the internal structure of steam turbine under different working conditions, for example under the condition of different steam flow and pressure, the position of mounting bracket can optimize the working condition of distance adjusting slide rod etc. parts, and a plurality of distance adjusting slide rods that are distributed left and right around the steam turbine body can accurately adjust the position of sliding plate, by adjusting the position of sliding plate, can change some key gaps in the steam turbine, to adapt to different working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is whole structure schematic diagram of the utility model;

[0021] Figure 2 It is front anatomic structure schematic diagram of the utility model;

[0022] Figure 3 It is mounting rack split structure schematic diagram of the utility model;

[0023] Figure 4 It is bottom structure schematic diagram of the utility model;

[0024] Figure 5 It is right view structure schematic diagram of the utility model.

[0025] Main symbol explanation:

[0026] 1, steam turbine body;2, main shaft;3, bearing;4, moving blade;5, connecting pipe;6, mounting snap ring;7, connecting snap ring;8, mounting groove;9, support vertical plate;10, fixed screw rod;11, mounting bracket;12, distance adjusting slide rod;13, sliding plate;14, limit stop plate;15, limit screw rod. DETAILED DESCRIPTION

[0027] Below, combining the drawings and specific implementation, the utility model is described further, need explaining is, under the premise of not conflicting, the following description of each embodiment or each technical feature between can be any combination and form new embodiment.

[0028] Embodiment:

[0029] Please combine Figures 1-5 , a kind of air intake structure for steam turbine of the embodiment, including steam turbine body 1, the front of steam turbine body 1 is fixedly connected with main shaft 2, the surface of main shaft 2 is fixedly connected with bearing 3, the surface of main shaft 2 is fixedly connected with moving blade 4, the right end of steam turbine body 1 is fixedly connected with connecting pipe 5;

[0030] The right end of the connecting pipe 5 is fixedly connected with the mounting snap ring 6, the right end of the mounting snap ring 6 is clamped with the connecting snap ring 7, the left and right ends of the steam turbine body 1 are provided with mounting grooves 8, the inside of the mounting groove 8 is slidably connected with the supporting vertical plate 9, the top of the steam turbine body 1 is fixedly connected with the supporting vertical plate 9, the inside of the supporting vertical plate 9 is threadedly connected with the fixed screw rod 10, the surface of the fixed screw rod 10 is threadedly connected with the mounting bracket 11, the surface of the mounting bracket 11 is fixedly connected with the pitch adjusting slide rod 12, the inside of the pitch adjusting slide rod 12 is slidably connected with the sliding plate 13, the surface of the sliding plate 13 is fixedly connected with the limiting clamping plate 14, the inside of the limiting clamping plate 14 is threadedly connected with the limiting screw rod 15, by setting the rotating limiting clamping plate 14 away from the surface of the steam turbine body 1, the sliding plate 13 can drive the limiting clamping plate 14 to slide and adjust the position in the inside of the pitch adjusting slide rod 12, after the fixed screw rod 10 is rotated and taken out from the inside of the mounting bracket 11 and the supporting vertical plate 9, the staff can conveniently install and dismount the mounting bracket 11 installed on the left and right ends of the steam turbine body 1, by setting the mounting snap ring 6 and the connecting snap ring 7, the staff can conveniently connect and fix the external pipeline of the whole equipment, which increases the operation convenience when the equipment is used.

[0031] The bearing 3 located inside the steam turbine body 1 and in contact with the front surface can accurately position the main shaft 2, reducing the radial and axial deviation of the main shaft 2 when rotating at high speed, which helps to improve the matching precision between the moving blades 4 and the static blades, thereby improving the energy conversion efficiency.

[0032] The bearing 3 is located inside the steam turbine body 1, the rear end of the bearing 3 is in contact with the front surface of the steam turbine body 1, and the mounting snap ring 6 is located at the top end of the steam turbine body 1.

[0033] As a key component of energy transmission, it effectively transmits the rotational mechanical energy generated by the moving blades 4 driven by steam, and in the power generation scene, the main shaft 2 is connected with the generator rotor, so that the mechanical energy of the steam turbine is converted into electrical energy.

[0034] It provides a stable center shaft for the rotation of the whole steam turbine, ensuring that the moving blades 4, bearings 3 and other components can work cooperatively, and ensuring the stability of the whole device operation.

[0035] As a further improvement of the above scheme, the number of installation grooves 8 is set to four, and each two is a group, the four installation grooves 8 are distributed symmetrically left and right around the steam turbine body 1, by setting the installation frame 11 and the cooperation of the fixing screw rod 10 and other components, the position can be adjusted as needed, and then the requirements of the internal structure of the steam turbine under different working conditions can be adapted, for example, under different steam flow and pressure conditions, adjusting the position of the installation frame 11 can optimize the working state of the distance adjusting slide rod 12 and other components, several distance adjusting slide rods 12 distributed symmetrically left and right around the steam turbine body 1 can accurately adjust the position of the sliding plate 13, by adjusting the position of the sliding plate 13, some key gaps in the steam turbine can be changed to adapt to different working conditions.

[0036] The installation frame 11 is slidingly connected in the inside of the steam turbine body 1, the number of installation frames 11 is set to two, and the two installation frames 11 are distributed symmetrically left and right around the steam turbine body 1.

[0037] The fixing screw rod 10 distributed symmetrically left and right around the steam turbine body 1 and penetrating the installation frame 11 and the support vertical plate 9 can firmly connect the installation frame 11 and the support vertical plate 9 together, this connection mode ensures the integrity of the structure and prevents loosening between components during the operation of the steam turbine.

[0038] The fixing screw rod 10 penetrates the installation frame 11 and the support vertical plate 9 and extends to one end, and the fixing screw rod 10 is distributed symmetrically left and right around the steam turbine body 1.

[0039] The number of distance adjusting slide rods 12 is set to several, and each four is a group, and the several distance adjusting slide rods 12 are distributed symmetrically left and right around the steam turbine body 1.

[0040] The number of limiting clamping plates 14 is set to several, and each four is a group, and the several limiting clamping plates 14 are distributed symmetrically left and right around the steam turbine body 1.

[0041] The implementation principle of the air inlet structure for the steam turbine in the embodiment of the application is as follows: the rotating limiting clamping plate 14 is arranged away from the surface of the steam turbine body 1, the sliding plate 13 can drive the limiting clamping plate 14 to slide and adjust the position in the inside of the distance adjusting sliding rod 12, the rotating fixing screw 10 is taken out from the inside of the mounting bracket 11 and the supporting vertical plate 9, so that the staff can conveniently install and dismount the mounting bracket 11 installed at the left and right ends of the steam turbine body 1, the mounting clamping ring 6 and the connecting clamping ring 7 are arranged, so that the staff can conveniently connect and fix the external pipeline of the whole equipment, the operation convenience of the equipment in use is increased, the mounting bracket 11 and the fixing screw 10 and other components are arranged in cooperation, so that the position can be adjusted according to the requirement, and then the requirement of the internal structure of the steam turbine under different working conditions can be adapted, for example, under different steam flow and pressure conditions, the position of the mounting bracket 11 can be adjusted to optimize the working state of the distance adjusting sliding rod 12 and other components, the distance adjusting sliding rods 12 symmetrically distributed left and right around the steam turbine body 1 can accurately adjust the position of the sliding plate 13, and by adjusting the position of the sliding plate 13, some key clearances in the steam turbine can be changed to adapt to different working conditions.

[0042] The above embodiment is only a preferred embodiment of the application, and cannot be used to limit the protection scope of the application, and any non-substantial change and replacement made by the person skilled in the art on the basis of the application belongs to the protection scope of the application.

Claims

1. An air intake structure for a steam turbine, characterized by, Including steam turbine body (1), the front surface of steam turbine body (1) is fixedly connected with main shaft (2), the surface of main shaft (2) is fixedly connected with bearing (3), the surface of main shaft (2) is fixedly connected with dynamic blade (4), the right end of steam turbine body (1) is fixedly connected with connecting pipe (5); The right end of connecting pipe (5) is fixedly connected with mounting snap ring (6), the right end of mounting snap ring (6) is clamped with connecting snap ring (7), the left and right ends of steam turbine body (1) are provided with mounting slot (8), the inside of mounting slot (8) is slidably connected with support vertical plate (9), the top of steam turbine body (1) is fixedly connected with support vertical plate (9), the inside of support vertical plate (9) is threadedly connected with fixed screw rod (10), the surface of fixed screw rod (10) is threadedly connected with mounting bracket (11), the surface of mounting bracket (11) is fixedly connected with pitch adjusting slide rod (12), the inside of pitch adjusting slide rod (12) is slidably connected with sliding plate (13), the surface of sliding plate (13) is fixedly connected with limit stop plate (14), the inside of limit stop plate (14) is threadedly connected with limit stop screw rod (15).

2. An inlet structure for a gas turbine engine as recited in claim 1, wherein: The bearing (3) is located in the inside of steam turbine body (1), the rear end of bearing (3) is in contact with the front surface of steam turbine body (1), the mounting snap ring (6) is located at the top end of steam turbine body (1).

3. An inlet structure for a gas turbine engine as recited in claim 1, wherein: The number of mounting slots (8) is four, and every two is a group, and four mounting slots (8) are distributed symmetrically left and right around steam turbine body (1).

4. An inlet structure for a gas turbine engine as recited in claim 3, wherein: The mounting bracket (11) is slidably connected in the inside of steam turbine body (1), the number of mounting bracket (11) is two, and two mounting brackets (11) are distributed symmetrically left and right around steam turbine body (1).

5. An inlet structure for a gas turbine engine as recited in claim 1, wherein: The fixed screw rod (10) penetrates mounting bracket (11) and support vertical plate (9), extends to one end, and the fixed screw rod (10) is distributed symmetrically left and right around steam turbine body (1).

6. An inlet structure for a gas turbine engine as recited in claim 5, characterized by: The number of pitch adjusting slide rods (12) is several, and every four is a group, and several pitch adjusting slide rods (12) are distributed symmetrically left and right around steam turbine body (1).

7. An inlet structure for a gas turbine engine as claimed in claim 6 wherein: The number of limit stop plates (14) is several, and every four is a group, and several limit stop plates (14) are distributed symmetrically left and right around steam turbine body (1).

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