Detachable heat shield of steam turbine

Abstract

The detachable heat shield comprises a mounting rod, a positioning rod is welded to one end of the heat shield, heat insulation cotton adheres to one end of the positioning rod, positioning plates are welded to one end of the positioning rod and one end of the heat shield, and one end of each positioning plate is rotationally connected with an adjusting screw rod. Compared with the prior art, the heat shield assembly has the advantages that the multiple heat shields are spliced through the positioning rods, the inserting blocks are moved into the positioning frames, then the adjusting screws are rotated by a person, the heat shields are inserted into the positioning frames, the heat shields are inserted into the positioning frames, and the heat shields are fixed through the positioning frames. Due to the fact that the adjusting screw rod is in threaded connection with the inserting block, the positioning plate is driven to move when the adjusting screw rod is rotated to move, the gap between every two adjacent heat shields can be smaller through movement of the positioning plate, then the heat shielding effect of the heat shields can be improved, splicing of the multiple heat shields is facilitated, and the splicing efficiency of the multiple heat shields is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat shielding plates, in particular to a detachable heat shielding plate for a steam turbine. Background Technique

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle to become an accelerated air flow and then jets onto the blades, causing the rotor equipped with the blade row to rotate and do work externally. During the use of the steam turbine, a heat shielding plate is required to block the heat and prevent the heat from dissipating externally and affecting the surrounding environment.

[0003] In the application document of a detachable heat shielding plate for a steam turbine proposed in the application number 202220977617.9, the heat shielding plate is insulated from the steam turbine through the first heat insulation layer and the second heat insulation layer, and the clamping groove and the sealing gasket seal the gap between the heat shielding plates, solving the problems that there will inevitably be gaps and improper connections between the panels, and the heat of the steam turbine body will escape from the gaps to the bearing seat, thereby reducing the service life of the bearing seat.

[0004] Although the above application meets the user's usage requirements to a certain extent, there are still certain defects during use. The specific problems are as follows. Based on this, after the two heat shielding plates are connected, the two heat shielding plates are in contact with each other. Although most of the heat can be blocked by the heat shielding plates, there will still be some heat leaking out from the gap between the two heat shielding plates, resulting in a poor use effect of the heat shielding plate. The utility model designs a detachable heat shielding plate for a steam turbine to solve the above problems. Content of the Utility Model

[0005] The utility model provides a detachable heat shielding plate for a steam turbine, which can effectively solve the problem that after the two heat shielding plates are connected, the two heat shielding plates are in contact with each other. Although most of the heat can be blocked by the heat shielding plates, there will still be some heat leaking out from the gap between the two heat shielding plates, resulting in a poor use effect of the heat shielding plate as proposed in the above background technique.

[0006] To achieve the above object, the utility model provides the following technical solution: A detachable heat shielding plate for a steam turbine includes an installation rod. One end of the heat shielding plate is welded with a positioning rod. One end of the positioning rod is bonded with heat insulation cotton. One end of the positioning rod and one end of the heat shielding plate are both welded with a positioning plate. One end of the positioning plate is rotatably connected with an adjusting screw rod. An insertion block is connected to the outside of the adjusting screw rod through a thread. Positioning frames are welded to both ends of the heat shielding plate.

[0007] Preferably, adjusting telescopic rods are installed at both ends of the top of the installation rod through screws.

[0008] Preferably, threaded rods are welded to both ends, a heat shield is provided at the end of the mounting rod, and a fixing nut is threadedly connected to the outside of the threaded rod.

[0009] Preferably, the insertion block corresponds to the positioning frame, and the outer diameter of the positioning frame is equal to the inner diameter between the two positioning frames.

[0010] Preferably, the positioning plates at both ends of the heat shield are staggered.

[0011] Preferably, the longitudinal section of the positioning rod is arc-shaped, and a positioning groove is provided at the position corresponding to the positioning rod at the other end of the heat shield.

[0012] Preferably, the mounting rod and the heat shield are fixed by extrusion with the threaded rod and the fixing nut.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The structure of the present utility model is scientific and reasonable, and it is safe and convenient to use. Personnel can adjust the distance between multiple mounting rods according to the actual situation by adjusting the telescopic rod, and then adjust the distance between multiple heat shields, so that the heat shields can be applied to different steam turbines, expanding the applicable range of the heat shields. Subsequently, the personnel move the heat shield to the outside of the threaded rod, and then fix the heat shield with the fixing nut. The personnel move the heat shield, and splice multiple heat shields through the positioning rod. As the heat shield moves, the heat shield is limited by the positioning plate at this time, and the insertion block moves into the positioning frame. Subsequently, the personnel rotate the adjusting screw. Since the adjusting screw is threadedly connected to the insertion block, when the adjusting screw rotates and moves, it drives the positioning plate to move. By moving the positioning plate, the gap between two adjacent heat shields can be made smaller, thereby improving the heat shielding effect of the heat shield, facilitating the splicing of multiple heat shields, and improving the splicing efficiency of multiple heat shields. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model.

[0015] In the drawings:

[0016] Figure 1 is the structural schematic diagram of the present utility model;

[0017] Figure 2 is the structural schematic diagram of the fixing nut installation of the present utility model;

[0018] Figure 3 is the structural schematic diagram of the heat insulation cotton installation of the present utility model;

[0019] Figure 4 is the Figure 3Schematic diagram of the enlarged structure of area A

[0020] Reference numerals in the figure: 1, mounting rod; 2, heat shield; 3, threaded rod; 4, fixing nut; 5, adjustable telescopic rod; 6, positioning rod; 7, heat insulation cotton; 8, positioning plate; 9, adjusting screw; 10, insertion block; 11, positioning frame. Specific implementation mode

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] Embodiment: As Figures 1-4 shown, the present invention provides a technical solution, a detachable heat shield for a steam turbine, including a mounting rod 1, threaded rods 3 are welded at both ends, a heat shield 2 is arranged at the end of the mounting rod 1, and a fixing nut 4 is connected to the outside of the threaded rod 3 by thread. The heat shield 2 is fixed by extrusion between the mounting rod 1 and the threaded rod 3 and the fixing nut 4, which is convenient for the installation of the heat shield 2. A positioning rod 6 is welded at one end of the heat shield 2. The longitudinal section of the positioning rod 6 is arc-shaped. A positioning groove is opened at the position corresponding to the positioning rod 6 at the other end of the heat shield 2, which is convenient for connecting multiple heat shields 2. A heat insulation cotton 7 is bonded to one end of the positioning rod 6, and positioning plates 8 are welded to one end of the positioning rod 6 and one end of the heat shield 2. The positioning plates 8 at both ends of the heat shield 2 are staggered, which is convenient for driving the heat shield 2 to move and squeezing the heat insulation cotton 7 to reduce the distance between the two heat shields 2. One end of the positioning plate 8 is rotatably connected to an adjusting screw 9, and an insertion block 10 is connected to the outside of the adjusting screw 9 by thread. The insertion block 10 corresponds to the position of the positioning frame 11. The outer diameter of the positioning frame 11 is equal to the inner diameter between the two positioning frames 11, which ensures the stability of the insertion block 10 and thus facilitates the movement of the adjusting screw 9. Positioning frames 11 are welded at both ends of the heat shield 2, and adjustable telescopic rods 5 are installed at both ends of the top of the mounting rod 1 by screws.

[0023] The personnel adjust the distance between multiple mounting rods 1 by means of the adjusting telescopic rod 5 according to the actual situation, and then adjust the distance between multiple heat shield plates 2, so that the heat shield plates 2 can be applied to different steam turbines, expanding the applicable range of the heat shield plates 2. Subsequently, the personnel move the heat shield plates 2 to the outside of the threaded rod 3, and then fix the heat shield plates 2 with the fixing nuts 4. The personnel move the heat shield plates 2 and splice multiple heat shield plates 2 through the positioning rods 6. As the heat shield plates 2 move, at this time, the heat shield plates 2 are limited by the positioning plate 8, and the insertion blocks 10 are moved into the positioning frames 11. Subsequently, the personnel rotate the adjusting screw 9. Since the adjusting screw 9 is threadedly connected to the insertion blocks 10, when the adjusting screw 9 is rotated and moved, the positioning plate 8 is driven to move. By moving the positioning plate 8, the gap between two adjacent heat shield plates 2 can be made smaller, thereby improving the heat shielding effect of the heat shield plates 2, facilitating the splicing of multiple heat shield plates 2, and improving the splicing efficiency of multiple heat shield plates 2.

[0024] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A detachable heat shield for a steam turbine, comprising a mounting rod (1), characterized in that: One end of the heat shield (2) is welded with a positioning rod (6). One end of the positioning rod (6) is bonded with heat insulation cotton (7). One end of the positioning rod (6) and one end of the heat shield (2) are both welded with a positioning plate (8). One end of the positioning plate (8) is rotatably connected with an adjusting screw rod (9). An insertion block (10) is connected to the outside of the adjusting screw rod (9) through threads. Positioning frames (11) are welded at both ends of the heat shield (2).

2. The detachable heat shield for a steam turbine according to claim 1, wherein, Adjustable telescopic rods (5) are installed at both ends of the top of the mounting rod (1) by screws.

3. A detachable heat shield for a steam turbine according to claim 1, characterized in that, Threaded rods (3) are welded at both ends. A heat shield (2) is arranged at the end of the mounting rod (1). A fixing nut (4) is connected to the outside of the threaded rod (3) through threads.

4. A detachable heat shield for a steam turbine according to claim 1, characterized in that The positions of the insertion block (10) and the positioning frame (11) correspond to each other. The outer diameter of the positioning frame (11) is equal to the inner diameter between the two positioning frames (11).

5. A detachable heat shield for a steam turbine according to claim 1, characterized in that, The positioning plates (8) at both ends of the heat shield (2) are staggered.

6. A detachable heat shield for a steam turbine according to claim 1, characterized in that, The longitudinal section of the positioning rod (6) is arc-shaped. A positioning groove is formed at the position corresponding to the positioning rod (6) at the other end of the heat shield (2).

7. A detachable heat shield for a steam turbine according to claim 2, characterized in that, The mounting rod (1) and the heat shield (2) are fixed by extrusion through the threaded rod (3) and the fixing nut (4).

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