Protective device of steam turbine

Abstract

The utility model relates to the technical field of protecting equipment of steam turbines, in particular to a protecting device of a steam turbine, which comprises a buffering transparent sheath, oil absorbing paper is fixedly connected with an inner cavity of the buffering transparent sheath in an embedded mode, a hoop body is arranged on the outer side of the buffering transparent sheath, and a connecting box is fixedly connected with the outer side surface of one end of the hoop body. An open groove is formed in the surface of the top of the connecting box, a limiting box is slidably connected to an inner cavity of the open groove in a clamped and embedded mode, a follow-up plate is slidably connected to an inner cavity of the limiting box in a clamped and embedded mode, a limiting spring is arranged in the inner cavity of the limiting box, a limiting column is fixedly connected to the surface of the top of the follow-up plate in a penetrating mode, and attaching plates are fixedly connected to the surfaces of the front side and the rear side of the limiting box. By arranging the hoop body, the connecting box, the open groove, the limiting box, the follow-up plate, the limiting spring, the limiting column, the mounting hole, the inserting column and the limiting hole, the buffering transparent sheath can be hooped on the outer side surface of the air cylinder of the steam turbine more conveniently.

Description

Technical Field

[0001] This utility model relates to a protection device for a steam turbine, belonging to the technical field of steam turbine protection equipment. Background Technology

[0002] A steam turbine is a type of turbine that uses steam at a certain temperature and pressure to perform work. The main working principle of a steam turbine is to use the expansion of steam to convert some of its heat energy into high-speed airflow, which drives the impeller to rotate and converts it into kinetic energy. During the operation of a steam turbine, it is necessary to buffer and dampen the cylinders in the steam turbine for protection. For example, a steam turbine protection device mentioned in authorization announcement number CN214170632U includes a left sleeve, a buffer transparent sleeve fixedly connected to the inner wall of the left sleeve, a right sleeve fixedly connected to the right end of the buffer transparent sleeve, and multiple oil-absorbing papers fixedly connected to the inner wall of the buffer transparent sleeve.

[0003] In this device, the buffer transparent sheath is clamped to the outer surface of the cylinder by the cooperation of straight tooth grooves and rotating teeth. In actual application, this clamping mechanism is prone to wear during long-term use, resulting in a short service life and hindering its widespread use. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a protection device for a steam turbine.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protective device for a steam turbine, comprising a buffer transparent sleeve, an oil-absorbing paper fixedly connected to the inner cavity of the buffer transparent sleeve, a sleeve body provided on the outer side of the buffer transparent sleeve, a connecting box fixedly connected to the outer surface of one end of the sleeve body, an open groove opened on the top surface of the connecting box, a limit box slidably connected to the inner cavity of the open groove, a follower plate slidably connected to the inner cavity of the limit box, a limit spring provided in the inner cavity of the limit box, a limit post fixedly connected through the top surface of the follower plate, a bonding plate fixedly connected to the front and rear side surfaces of the limit box, a bonding bolt threadedly connected through the top surface of the bonding plate, an installation hole opened through the outer surface of the sleeve body away from the connecting box, an insertion post movably connected to the inner cavity of the installation hole, and a limit hole opened through one side surface of the insertion post.

[0006] Preferably, a through groove matching the structural dimensions of the sleeve body is provided on one side surface of the connecting box, and a fitting thread hole matching the structural dimensions of the fitting bolt is provided on the top surface of the connecting box.

[0007] Preferably, the front and rear surfaces of the limiting box are fixedly connected with a snap-fit ​​body, and the front and rear surfaces of the open slot cavity are provided with a snap-fit ​​groove that matches the structural size of the snap-fit ​​body.

[0008] Preferably, the limiting post and the limiting hole are structurally matched, a pull rod is fixedly connected to the top of the limiting post, and the end of the limiting post away from the pull rod is movably connected to the limiting box.

[0009] Preferably, the bottom surface of the pull rod is slidably connected to the limiting box, the outer surface of the pull rod is fixedly connected to a limiting plate, the top surface of the limiting plate is threaded with a limiting bolt, and the top surface of the limiting box is provided with a limiting threaded hole that matches the structural size of the limiting bolt.

[0010] Preferably, one end of the limiting spring is fixedly connected to the follower plate, and the other end of the limiting spring away from the follower plate is fixedly connected to the limiting box.

[0011] Preferably, a rotating ring is threaded onto the outer surface of the insertion post, and the rotating ring is slidably connected to the sleeve body on the side surface close to the insertion post.

[0012] The beneficial effects of this utility model are:

[0013] This utility model, by incorporating a sleeve body, connecting box, open slot, limiting box, follower plate, limiting spring, limiting post, mounting hole, insertion post, and limiting hole, allows for more convenient clamping of the buffer transparent sheath onto the outer surface of the turbine cylinder. Furthermore, the position of the limiting box can be adjusted as needed, allowing the limiting post to be inserted into different limiting holes. Even if one mounting hole and insertion post assembly is damaged, the sleeve body can still be clamped to the outer surface of the buffer transparent sheath, extending its service life. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the specific embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This utility model Figure 1 Schematic diagram of the structure at point A;

[0017] Figure 3 This is a schematic diagram of the structure of the limiting box outside after the pull rod is pulled up in this utility model;

[0018] Figure 4 This is a structural schematic diagram showing the internal details of the limiting box in this utility model;

[0019] In the diagram: 1. Buffer transparent sheath; 2. Oil-absorbing paper; 3. Hoop body; 4. Connecting box; 5. Open slot; 6. Limiting box; 7. Follower plate; 8. Limiting spring; 9. Limiting post; 10. Adhesive plate; 11. Adhesive bolt; 12. Mounting hole; 13. Insertion post; 14. Limiting hole; 15. Clip body; 16. Pull rod; 17. Limiting plate; 18. Limiting bolt; 19. Rotating ring. Detailed Implementation

[0020] 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.

[0021] Example 1

[0022] Please see Figure 1-4 This utility model provides the following technical solution: A protective device for a steam turbine, including a buffer transparent sleeve 1, which is made of silicone. An exhaust hole is provided through the outer side of the buffer transparent sleeve 1. An oil-absorbing paper 2 is fixedly connected to the inner cavity of the buffer transparent sleeve 1. The oil-absorbing paper 2 absorbs oil when leakage occurs in the cylinder, facilitating observation by the operator. This is known prior art. A sleeve 3 is provided on the outer side of the buffer transparent sleeve 1. A connecting box 4 is fixedly connected to the outer surface of one end of the sleeve 3. An open groove 5 is provided on the top surface of the connecting box 4. The inner cavity of the slot 5 is fitted with a sliding connection of a limiting box 6. The inner cavity of the limiting box 6 is fitted with a sliding connection of a follower plate 7. The inner cavity of the limiting box 6 is provided with a limiting spring 8. The top surface of the follower plate 7 is fixedly connected to a limiting post 9. The front and rear side surfaces of the limiting box 6 are fixedly connected to a bonding plate 10. The top surface of the bonding plate 10 is threadedly connected to a bonding bolt 11. The outer surface of the sleeve body 3 away from the connecting box 4 is provided with a mounting hole 12. The inner cavity of the mounting hole 12 is fitted with a movable connection of an insertion post 13. One side surface of the insertion post 13 is provided with a limiting hole 14.

[0023] In use, the buffer transparent sheath 1 is placed on the part of the turbine cylinder that needs protection, and then the clamp body 3 is wrapped around the outer surface of the buffer transparent sheath 1. One end of the clamp body 3 is inserted into the connecting box 4, and the limiting post 9 is inserted into the limiting hole 14 of the insertion post 13, so that the clamp body 3 tightens the buffer transparent sheath 1.

[0024] As a preferred technical solution for a turbine protection device of this utility model, a through groove matching the structural dimensions of the sleeve body 3 is provided on one side surface of the connecting box 4, and a fitting thread hole matching the structural dimensions of the fitting bolt 11 is provided on the top surface of the connecting box 4; the fitting bolt 11 passes through the fitting plate 10 and is inserted into the fitting thread hole on the surface of the connecting box 4 to limit the position of the limiting box 6.

[0025] As a preferred technical solution for a turbine protection device of this utility model, the front and rear surfaces of the limiting box 6 are fixedly connected with the insert body 15, and the front and rear surfaces of the inner cavity of the open groove 5 are provided with a slot that matches the structural size of the insert body 15; the limiting box 6 slides in the open groove 5 through the insert body 15.

[0026] As a preferred technical solution for a turbine protection device of this utility model, one end of the limiting spring 8 is fixedly connected to the follower plate 7, and the other end of the limiting spring 8 away from the follower plate 7 is fixedly connected to the limiting box 6; the pulling rod 16 pulls the movement of the limiting column 9, which drives the movement of the follower plate 7, thereby causing the limiting spring 8 to deform and generate elastic force.

[0027] As a preferred technical solution of the turbine protection device of this utility model, a rotating ring 19 is threadedly connected to the outer surface of the insertion column 13. The rotating ring 19 is slidably connected to the sleeve body 3 on the side surface close to the insertion column 13. The insertion column 13 is inserted into the mounting hole 12, and then the sleeve body 3 is threadedly connected to the outer surface of the insertion column 13 to limit the insertion column 13 in the mounting hole 12.

[0028] Example 2

[0029] Please see Figure 3 The difference between this embodiment and Embodiment 1 is that:

[0030] The limiting post 9 and the limiting hole 14 are structurally matched. A pull rod 16 is fixedly connected to the top of the limiting post 9. The end of the limiting post 9 away from the pull rod 16 is movably connected to the limiting box 6. The bottom surface of the pull rod 16 is slidably connected to the limiting box 6. A limiting plate 17 is fixedly connected to the outer surface of the pull rod 16. A limiting bolt 18 is threadedly connected to the top surface of the limiting plate 17. A limiting threaded hole matching the structural dimensions of the limiting bolt 18 is opened on the top surface of the limiting box 6. The movement of the limiting post 9 is driven by the pull rod 16. The limiting bolt 18 passes through the limiting plate 17 and is inserted into the top surface of the limiting box 6 to limit the position of the pull rod 16 and prevent accidental contact with the pull rod 16, which could cause the sleeve 3 to loosen.

[0031] The working principle and usage process of this utility model are as follows: In use, the sleeve 3 is placed on the outer surface of the buffer transparent sheath 1, and then one end of the sleeve 3 is inserted into the connecting box 4. At this time, the limiting bolt 18 is removed. The movement of the combination of the limiting post 9 and the follower plate 7 can be driven by the pulling rod 16, causing the limiting spring 8 to deform and generate elastic force. Then, one end of the sleeve 3 is passed through the connecting box 4, and the protruding end of the sleeve 3 is pulled until the buffer transparent sheath 1 is tightened. Then, the pulling rod 16 is released, and the limiting spring 8 is released. Spring 8 returns to its original state, driving the movement of the combination of follower plate 7 and limit post 9, inserting limit post 9 into the corresponding limit hole 14, and then the limiting bolt 18 passes through the limiting plate 17 and is rotated on the surface of the limit box 6. Furthermore, if the mounting hole 12 and the insertion post 13 that limit the position are damaged, the fitting bolt 11 on the outside of the limit box 6 is removed, the limit box 6 is moved, and the limit post 9 is inserted into the limit hole 14 of the insertion post 13 of the other undamaged mounting hole 12, thus extending the service life of the clamping structure.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0033] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A protective device for a steam turbine, comprising a buffer transparent sheath (1), characterized in that: The inner cavity of the buffer transparent sheath (1) is fitted with and fixedly connected to an oil-absorbing paper (2). A sleeve body (3) is provided on the outer side of the buffer transparent sheath (1). A connecting box (4) is fixedly connected to the outer surface of one end of the sleeve body (3). An open groove (5) is opened on the top surface of the connecting box (4). A limit box (6) is slidably connected to the inner cavity of the open groove (5). A follower plate (7) is slidably connected to the inner cavity of the limit box (6). A limit spring (8) is provided in the inner cavity of the limit box (6). A limiting post (9) is fixedly connected through the top surface of the follower plate (7). A fitting plate (10) is fixedly connected to the front and rear sides of the limiting box (6). A fitting bolt (11) is threadedly connected through the top surface of the fitting plate (10). An installation hole (12) is opened through the outer surface of the sleeve body (3) away from the connecting box (4). An insertion post (13) is movably connected to the inner cavity of the installation hole (12). A limiting hole (14) is opened through one side surface of the insertion post (13).

2. The protection device for a steam turbine according to claim 1, characterized in that: The connecting box (4) has a through groove on one side surface that matches the structural size of the sleeve body (3), and the connecting box (4) has a threaded hole on the top surface that matches the structural size of the fitting bolt (11).

3. The protection device for a steam turbine according to claim 1, characterized in that: The limiting box (6) has a card insert (15) fixedly connected to its front and rear surfaces, and the open slot (5) has a card groove on its front and rear surfaces that matches the structural size of the card insert (15).

4. The protection device for a steam turbine according to claim 1, characterized in that: The limiting post (9) and the limiting hole (14) are structurally matched. A pull rod (16) is fixedly connected to the top of the limiting post (9). The end of the limiting post (9) away from the pull rod (16) is movably connected to the limiting box (6).

5. A protection device for a steam turbine according to claim 4, characterized in that: The bottom surface of the pull rod (16) is slidably connected to the limiting box (6). A limiting plate (17) is fixedly connected to the outer surface of the pull rod (16). A limiting bolt (18) is threadedly connected to the top surface of the limiting plate (17). A limiting threaded hole matching the structural size of the limiting bolt (18) is opened on the top surface of the limiting box (6).

6. A protection device for a steam turbine according to claim 1, characterized in that: One end of the limiting spring (8) is fixedly connected to the follower plate (7), and the other end of the limiting spring (8) away from the follower plate (7) is fixedly connected to the limiting box (6).

7. A protection device for a steam turbine according to claim 1, characterized in that: The outer surface of the insertion post (13) is threaded with a rotating ring (19), and the rotating ring (19) is slidably connected to the sleeve body (3) on the side surface close to the insertion post (13).

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