Universal pipe for steam turbine

Abstract

The utility model discloses a steam turbine general pipe which comprises an air inlet pipe and an installation groove, the installation groove is formed in one side of the air inlet pipe, a filter plate is movably placed in the installation groove, a plurality of installation rods are arranged on one side of the filter plate in a sliding mode, and installation holes matched with the installation rods for use are formed in the inner surface of the installation groove. The installation rods and the installation holes are arranged in a surrounding and equidistant array mode, and a threaded groove is formed in one side of the filter plate. According to the general pipe for the steam turbine, the mounting rods are slidably arranged on the side face of the filter plate, the threaded rods and the conical blocks which are matched with the mounting rods for use are arranged, and the mounting holes matched with the mounting rods are formed in the inner wall of the mounting groove, so that the mounting of the filter plate can be synchronously controlled through the threaded rods and the conical blocks; the mounting rods and the mounting holes are enabled to be quickly limited and matched, and the filter plate is quickly and fixedly mounted.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbines, in particular to a universal pipe for steam turbines. Background Art

[0002] A large number of pipes are laid and used during the assembly process of the steam turbine. Among them, the air intake pipe is a front pipe and is more common and commonly used in steam turbines. The existing steam turbine air intake elbow does not have a filter installation structure. Excessive impurities in the gas may cause turbine valve failure and valve leakage.

[0003] In order to avoid the above problems, in view of this: Chinese patent CN203784543U discloses an air intake elbow for a steam turbine, including an air intake end and an air outlet end, the pipe connecting the air intake end and the air outlet end is a elbow with a curved structure, the air intake end and the elbow are integrally provided with a first arc-shaped protrusion at the connection point of the air intake end and the elbow, and the air outlet end and the elbow are integrally provided with a second arc-shaped protrusion; an air intake channel is provided in the middle of the air intake end, an annular filter screen installation notch is provided at the left end of the air intake channel, an annular filter screen positioning groove is provided at the inner end of the filter screen installation notch, a plurality of screw holes are provided outwardly at the middle of the wall surface of the filter screen positioning groove, and an embedding groove is provided at the outer end of the screw hole; an internal thread is provided at the left end of the inner wall surface of the air intake channel. In the above technical scheme, the first arc-shaped protrusion and the second arc-shaped protrusion increase the solid metal of the elbow, reduce the possibility of stress deformation, and enable the casting method to replace the forging method to manufacture the air intake elbow for the steam turbine; the filter screen installation notch and the filter screen positioning groove are reasonably arranged, and the installation of the filter screen is convenient.

[0004] Although the above-mentioned device can facilitate the filtering of gas impurities by reasonably setting the filter, it is inevitable that there are still some shortcomings in its actual use. For example, the device lacks a convenient positioning mechanism, so that the installation of the filter is time-consuming. In order to avoid such problems, a universal pipe for steam turbine is proposed to solve the existing problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a universal pipe for a steam turbine, which solves the problem that the device lacks a convenient positioning mechanism, resulting in a time-consuming installation process of the filter.

[0006] To achieve the above purpose, the utility model is implemented through the following technical scheme: a universal pipe for a steam turbine, comprising an air inlet pipe and a mounting groove, the mounting groove is opened on one side of the air inlet pipe, a filter plate is movably placed inside the mounting groove, a plurality of mounting rods are slidably arranged on one side of the filter plate, the inner surface of the mounting groove is provided with mounting holes used in conjunction with the mounting rods, and the plurality of mounting rods and the mounting holes are arranged in a surrounding equidistant array, a threaded groove is opened on one side of the filter plate, a threaded rod is connected to the internal thread of the threaded groove, and a conical block used in conjunction with the mounting rod is arranged on the surface of the threaded rod.

[0007] Preferably, an annular sliding groove is formed on the inner wall of the conical block, a sliding plate is slidably connected inside the annular sliding groove, and the sliding plate is fixedly connected to the outer surface of the threaded rod.

[0008] Preferably, a plurality of guide rods are fixedly arranged in an equidistant array around the other side of the filter plate, and a guide hole matched with the guide rods is opened on one side of the inner cavity of the installation groove.

[0009] Preferably, a plurality of guide slots are equidistantly provided around one side of the filter plate, a sliding block is slidably connected inside the guide slot, and adjacent sliding blocks are fixedly connected to the mounting rod.

[0010] Preferably, a return spring is fixedly connected between adjacent sliding blocks and guide slots.

[0011] Beneficial Effects

[0012] The utility model provides a universal pipe for a steam turbine. Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a mounting rod slidingly arranged on the side of the filter plate, provides a threaded rod and a conical block matched with the mounting rod, and provides a mounting hole matched with the mounting rod on the inner wall of the mounting groove, so that the installation of the filter plate can be synchronized by the threaded rod and the conical block to control a plurality of mounting rods, so that the mounting rod and the mounting hole are quickly limited and matched, and the fixed installation of the filter plate is quickly completed;

[0013] An annular sliding groove and a sliding plate are provided between the conical block and the threaded rod, so that the conical block can reduce the rotational friction with the mounting rod through the sliding cooperation of the annular sliding groove and the sliding plate;

[0014] Secondly, guide rods and guide holes are arranged between the filter plate and the mounting groove, so that the filter plate can be locked by the positions of the guide rods and the guide holes, so as to facilitate the centering of the filter plate and the calibration of the mounting rods and the mounting holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0016] Figure 2It is a cross-sectional view of the air intake pipe structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 A partial enlarged view of the middle A;

[0018] Figure 4 It is a schematic diagram of the internal structure of the installation slot of the utility model;

[0019] Figure 5 It is a schematic diagram of the filter plate structure of the utility model.

[0020] In the figure: 1. Inlet pipe; 2. Mounting groove; 3. Filter plate; 4. Mounting rod; 5. Mounting hole; 6. Threaded groove; 7. Threaded rod; 8. Conical block; 9. Annular slide groove; 10. Slide plate; 11. Guide rod; 12. Guide hole; 13. Guide slide groove; 14. Sliding block; 15. Return spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] See also Figure 1-5 The utility model provides a technical solution: a universal pipe for a steam turbine, comprising an air intake pipe 1 and a mounting groove 2, wherein the mounting groove 2 is provided at one side of the air intake pipe 1, and a filter plate 3 is movably placed inside the mounting groove 2.

[0023] Further, in order to improve the convenience of installing the filter plate 3, a plurality of mounting rods 4 are slidably provided on one side of the filter plate 3, a plurality of guide slots 13 are equidistantly provided around one side of the filter plate 3, a sliding block 14 is slidably connected inside the guide slot 13, adjacent sliding blocks 14 are fixedly connected to the mounting rod 4, a return spring 15 is fixedly connected between adjacent sliding blocks 14 and the guide slot 13, a mounting hole 5 for matching with the mounting rod 4 is provided on the inner surface of the mounting groove 2, and a plurality of mounting rods 4 and the mounting holes 5 are arranged in an equidistant array around one side of the filter plate 3, a threaded groove 6 is provided on one side of the filter plate 3, a threaded rod 7 is threadedly connected inside the threaded groove 6, and a conical block 8 for matching with the mounting rod 4 is provided on the surface of the threaded rod 7;

[0024] Furthermore, in order to avoid rotational friction between the conical block 8 and the mounting rod 4 , an annular groove 9 is provided on the inner wall of the conical block 8 , a slide plate 10 is slidably connected inside the annular groove 9 , and the slide plate 10 is fixedly connected to the outer surface of the threaded rod 7 .

[0025] To facilitate the calibration of the mounting rod 4 and the mounting hole 5 , a plurality of guide rods 11 are fixedly arranged in an equidistant array around the other side of the filter plate 3 , and a guide hole 12 matching the guide rod 11 is opened on one side of the inner cavity of the mounting groove 2 .

[0026] When in use, the filter plate 3 is centrally placed inside the mounting groove 2 by utilizing the fixed-point fit of the guide rod 11 and the guide hole 12. After the filter plate 3 is centrally placed through the guide rod 11 and the guide hole 12, the mounting rod 4 is slidably provided on the side of the corresponding filter plate 3 to be calibrated and corresponded with the mounting hole 5 opened on the inner wall of the mounting groove 2. Then, the threaded rod 7 is screwed, and the threaded rod 7 is screwed and continuously moved toward the inside of the threaded groove 6. The movement of the threaded rod 7 drives the conical block 8 to squeeze several mounting rods 4. The mounting rod 4 is forced to move and complete the limit fit with the corresponding mounting hole 5.

Claims

1. A universal pipe for a steam turbine, comprising an air intake pipe (1) and a mounting groove (2), wherein the mounting groove (2) is provided on one side of the air intake pipe (1), and is characterized in that: A filter plate (3) is movably placed inside the mounting groove (2), a plurality of mounting rods (4) are slidably arranged on one side of the filter plate (3), a mounting hole (5) matched with the mounting rod (4) is provided on the inner surface of the mounting groove (2), and the plurality of mounting rods (4) and the mounting holes (5) are arranged in a surrounding equidistant array, a threaded groove (6) is provided on one side of the filter plate (3), a threaded rod (7) is connected to the inner thread of the threaded groove (6), and a conical block (8) matched with the mounting rod (4) is provided on the surface of the threaded rod (7).

2. A universal pipe for steam turbine according to claim 1, characterized in that: The inner wall of the conical block (8) is provided with an annular sliding groove (9), the interior of the annular sliding groove (9) is slidably connected with a slide plate (10), and the slide plate (10) is fixedly connected to the outer surface of the threaded rod (7).

3. The universal pipe for steam turbine according to claim 1, characterized in that: A plurality of guide rods (11) are fixedly arranged in an equidistant array around the other side of the filter plate (3), and a guide hole (12) matched with the guide rod (11) is opened on one side of the inner cavity of the installation groove (2).

4. The universal pipe for steam turbine according to claim 1, characterized in that: A plurality of guide slots (13) are equidistantly arranged around one side of the filter plate (3), a sliding block (14) is slidably connected inside the guide slot (13), and adjacent sliding blocks (14) are fixedly connected to the mounting rod (4).

5. The universal pipe for steam turbine according to claim 4, characterized in that: A return spring (15) is fixedly connected between the adjacent sliding blocks (14) and the guide sliding grooves (13).

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