A steam turbine heat insulation device and working method thereof

Abstract

The invention discloses a steam turbine heat insulation device and a working method thereof, comprising a base, a steam turbine body, a heat insulation mechanism and a dehumidification mechanism; the heat insulation mechanism comprises a heat insulation cover and a heat insulation board, the heat insulation cover is wrapped and installed on the outside of the steam turbine body, the heat insulation cover and the steam turbine body are detachably connected, and the heat insulation board is fixedly installed on each inner wall of the heat insulation cover; the dehumidification mechanism is located inside the heat insulation board, the dehumidification mechanism comprises a ball screw mechanism and a dehumidification sponge brush, the ball screw mechanism is arranged at the top of the left and right ends of the heat insulation cover, the dehumidification sponge brush is connected to the output end of the ball screw mechanism, and the dehumidification sponge brush is attached to the inner wall of the heat insulation board. It can effectively prevent the heat loss of steam from being too fast, improve the heat insulation performance of the steam turbine, and prevent the heat insulation cover from being corroded by moisture.

Description

Technical Field

[0001] The invention belongs to the technical field of steam turbines and relates to a steam turbine heat insulation device and a working method thereof. Background Art

[0002] In the prior art, a general steam turbine has only one layer of protective cover on the outside, which has a weak heat insulation effect and the heat of the steam is easily lost. When the steam turbine is not working, the large temperature difference can easily cause a certain amount of water vapor to form on the surface of the protective cover. If the water vapor is not removed in time, the protective cover is easily corroded and aged. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a steam turbine insulation device and a working method thereof, which can effectively prevent the heat loss of steam from being too fast, improve the insulation performance of the steam turbine, and prevent the insulation cover from being corroded by moisture.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A steam turbine heat insulation device comprises a base, a steam turbine body, a heat insulation mechanism and a dehumidification mechanism;

[0006] The heat insulation mechanism includes a heat insulation cover and a heat insulation board. The heat insulation cover is wrapped and installed on the outside of the steam turbine body. The heat insulation cover and the steam turbine body are detachably connected. The heat insulation board is fixedly installed on each inner wall of the heat insulation cover.

[0007] The dehumidification mechanism is located inside the insulation board and includes a ball screw mechanism and a dehumidification sponge brush. The ball screw mechanism is arranged at the top of the left and right ends of the insulation cover. The dehumidification sponge brush is connected to the output end of the ball screw mechanism, and the dehumidification sponge brush is in contact with the inner wall of the insulation board.

[0008] Preferably, the ball screw mechanism includes a driving motor, a first screw rod, a limit plate and a guide rod. The driving motor is fixedly mounted above the left and right ends of the heat insulation cover, one end of the first screw rod is fixedly mounted on the transmission end of the driving motor, the limit plate is fixedly mounted on the other end of the first screw rod, and the guide rod is fixedly mounted on the front and rear sides of the inner end of the heat insulation board. The guide rods are symmetrically distributed with the first screw rod as the center, the dehumidification sponge brush is threadedly connected to the first screw rod, and the guide rod passes through the dehumidification sponge brush and is slidably connected to the dehumidification sponge brush.

[0009] Preferably, the heat insulation board is made of aerogel felt.

[0010] Preferably, the steam turbine body and the heat insulation cover are connected by a connecting mechanism.

[0011] Furthermore, the connecting mechanism includes a card block, a card slot, a knob and a second screw rod. The card block is fixedly installed on the front and rear sides of the turbine body, the card slot is fixedly set at the lower end of the heat insulation cover, the card block is adapted to the card slot, the knob is movably installed on the outer end of the turbine body, the knob is connected to the second screw rod through a gear set, a screw rod slide is threadedly connected to the second screw rod, the left and right ends of the screw rod slide are movably connected with a connecting rod, the free end of the connecting rod is movably connected to a limiting block, the left and right ends of the card block are provided with grooves, and a limiting groove is provided on the card slot at a position corresponding to the groove. When the heat insulation cover is connected to the turbine body, the limiting block passes through the groove and extends to the inside of the limiting groove.

[0012] Furthermore, the gear set includes a rotating shaft, a first bevel gear and a second bevel gear, one end of the rotating shaft is connected to the knob, and the other end is connected to the first bevel gear, the second bevel gear is meshed with the first bevel gear, and the second screw is connected to the second bevel gear.

[0013] Furthermore, a connecting block and a clamping block are arranged on the top of the limiting block, and both ends of the guide rail are located directly above the groove, and the guide rail passes through the connecting block and is slidably connected with the connecting block.

[0014] A working method of a steam turbine heat insulation device includes fixing a heat insulation cover on the outside of a steam turbine body, and a ball screw mechanism drives a dehumidification sponge brush to move, and the dehumidification sponge brush wipes off water vapor on the inner wall of a heat insulation board.

[0015] Preferably, the driving motor of the ball screw mechanism drives the first screw to rotate, thereby driving the dehumidification sponge brush to slide left and right along the first screw and the guide rod, so that the dehumidification sponge brush wipes off the water vapor on the inner wall of the insulation board.

[0016] Preferably, the specific process of fixing the heat insulation cover to the outside of the turbine body is: fix the heat insulation cover to the outside of the turbine body so that the clamping block is engaged in the clamping groove, and the knob is turned to drive the rotating shaft to rotate, thereby driving the first bevel gear to rotate, thereby driving the second bevel gear to rotate, thereby driving the second screw rod to rotate, thereby driving the screw rod slide to move up and down along the second screw rod, and the up and down movement of the screw rod slide drives the connecting rod to extend or close together. When the connecting rod extends, the limit block will pass through the groove and engage with the limit groove, thereby fixing the heat insulation cover and the turbine body together.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides a heat insulation mechanism, and a heat insulation board is arranged inside the heat insulation mechanism, which has a strong heat insulation effect, can effectively prevent the heat of the steam from being lost too quickly, and improve the heat insulation performance of the steam turbine; by providing a dehumidification mechanism, the ball screw mechanism drives the dehumidification sponge brush to move, so that the dehumidification sponge brush can wipe off the water vapor generated on the surface of the heat insulation board due to the excessive temperature difference, and prevent the heat insulation cover from being corroded by moisture.

[0019] Furthermore, by providing the connection mechanism, the installation and disassembly of the heat insulation cover can be more convenient, and the maintenance and replacement of the heat insulation cover can be convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the steam turbine body of the present invention;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0023] Figure 4 For the present invention Figure 2 Schematic diagram of the structure at A in the middle;

[0024] Figure 5 It is a schematic diagram of the side cross-sectional structure of the dehumidification mechanism of the present invention;

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of the connection mechanism of the present invention;

[0026] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point B in the middle.

[0027] In the figure: 1. base; 2. turbine body; 3. steam pipe; 4. heat insulation mechanism; 401. heat insulation cover; 402. heat insulation board; 5. dehumidification mechanism; 501. drive motor; 502. first screw rod; 503. limit plate; 504. guide rod; 505. dehumidification sponge brush; 6. connecting mechanism; 601. block; 602. slot; 603. knob; 607. second screw rod; 608. screw rod slide; 609. connecting rod; 610. limit block; 611. groove; 612. limit slot; 613. connecting block; 614. guide rail. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described 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; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] like Figure 1 As shown, the steam turbine insulation device of the present invention includes a base 1, a steam turbine body 2, a steam pipe 3, an insulation mechanism 4, a dehumidification mechanism 5 and a connecting mechanism 6. The steam turbine body 2 is fixedly mounted on the upper end of the base 1, the steam pipe 3 is connected to the outer end of the steam turbine body 2, the insulation mechanism 4 is located at the outer end of the steam turbine body 2, the dehumidification mechanism 5 is located inside the insulation mechanism 4, and the connecting mechanism 6 is located at the outer end of the steam turbine body 2.

[0032] like Figure 3 As shown, the heat insulation mechanism 4 includes a heat insulation cover 401 and a heat insulation board 402. The heat insulation cover 401 is installed at the outer end of the turbine body 2 to wrap the outside of the turbine body 2. The heat insulation cover 401 and the turbine body 2 are detachably connected. The heat insulation board 402 is fixedly installed at the inner end of the heat insulation cover 401. By setting the heat insulation mechanism 4, the heat insulation board 402 adopts new insulation materials such as aerogel felt, which has a strong insulation effect, can effectively prevent the heat loss of steam from being too fast, and improve the insulation performance of the steam turbine.

[0033] like Figure 3 and Figure 5 As shown, the dehumidification mechanism 5 includes a driving motor 501, a first screw rod 502, a limit plate 503, a guide rod 504 and a dehumidification sponge brush 505. The driving motor 501 is fixedly mounted above the left and right ends of the heat insulation cover 401, the first screw rod 502 is fixedly mounted on the outer end of the transmission end of the driving motor 501, the limit plate 503 is fixedly mounted on the other end of the first screw rod 502, the guide rod 504 is fixedly mounted on the front and rear sides of the inner end of the heat insulation board 402, the guide rods 504 are symmetrically distributed, the dehumidification sponge brush 505 is movably mounted on the outer end of the first screw rod 502, the dehumidification sponge brush 505 is adapted to the first screw rod 502, the guide rod 504 passes through the dehumidification sponge brush 505 and is movably connected to the dehumidification sponge brush 505, and the dehumidification sponge brush 505 is in contact with the heat insulation board 402.

[0034] By setting up the dehumidification mechanism 5, the driving motor 501 drives the first screw rod 502 to rotate, thereby driving the dehumidification sponge brush 505 to slide left and right along the first screw rod 502 and the guide rod 504, so that the dehumidification sponge brush 505 can wipe off the water vapor generated on the surface of the insulation board 402 due to excessive temperature difference.

[0035] like Figure 7As shown, the connecting mechanism 6 includes a block 601, a slot 602, a knob 603, a rotating shaft, a first bevel gear, a second bevel gear, a second screw 607, a screw slide 608, a connecting rod 609, a limit block 610, a groove 611, a limit slot 612, a connecting block 613 and a guide rail 614. Figure 2 and Figure 6 As shown, the block 601 is fixedly mounted on the front and rear sides of the upper end of the steam turbine body 2, the slot 602 is fixedly arranged at the lower end of the heat insulation cover 401, the block 601 is adapted to the slot 602, the knob 603 is movably mounted on the outer end of the steam turbine body 2, the knob 603 is symmetrically distributed, the shaft is fixedly mounted on the outer end of the knob 603, the shaft passes through the steam turbine body 2 and is movably connected to the steam turbine body 2, the first bevel gear is fixedly mounted on the outer end of the shaft, the second bevel gear is movably mounted on the upper end of the first bevel gear, the first bevel gear is meshed with the second bevel gear, and by setting the connecting mechanism 6, the knob 603 is rotated to drive the shaft to rotate, thereby driving the first bevel gear to rotate, thereby driving the second bevel gear to rotate.

[0036] The second screw rod 607 is fixedly mounted on the upper end of the second bevel gear, and the screw rod slide 608 is movably mounted on the outer end of the second screw rod 607. By setting the screw rod slide 608, the rotation of the second bevel gear can drive the second screw rod 607 to rotate, thereby driving the screw rod slide 608 to move up and down along the second screw rod 607; the screw rod slide 608 is nested on the second screw rod 607, and the two are threadedly connected. The connecting rod 609 is movably mounted on the left and right ends of the screw rod slide 608, and the limit block 610 is movably mounted on the outer end of the connecting rod 609. By setting the connecting rod 609, the up and down movement of the screw rod slide 608 can drive the connecting rod 609 to extend or close.

[0037] like Figure 4 As shown, the groove 611 is fixedly arranged at the left and right ends of the block 601, the limiting groove 612 is fixedly arranged at the left and right sides of the inner end of the groove 602, the limiting block 610 is adapted to the groove 611 and the limiting groove 612, the limiting block 610 passes through the groove 611 and extends to the inside of the limiting groove 612, the limiting block 610 is movably connected with the groove 611 and the limiting groove 612, by setting the limiting block 610, when the connecting rod 609 is extended, the limiting block 610 will pass through the groove 611 and engage with the limiting groove 612, so as to facilitate fixing the heat insulation cover 401 and the turbine body 2 together.

[0038] like Figure 7 As shown, the connecting block 613 is fixedly installed on the upper end of the limit block 610, and the guide rail 614 is fixedly installed inside the clamping block 601. The two ends of the guide rail 614 are located directly above the groove 611. The guide rail 614 passes through the connecting block 613 and is slidably connected to the connecting block 613. By setting the guide rail 614, the limit block 610 can be guided and limited so that it can only move left and right to prevent it from being offset.

[0039] Working principle: First, place the heat insulation cover 401 on the outer end of the turbine body 2 so that the block 601 is engaged in the slot 602, and turn the knob 603 to drive the shaft to rotate, thereby driving the first bevel gear to rotate, thereby driving the second bevel gear to rotate, thereby driving the second screw rod 607 to rotate, thereby driving the screw slide 608 to move up and down along the second screw rod 607, and the up and down movement of the screw slide 608 can drive the connecting rod 609 to extend or close together. When the connecting rod 609 extends, the limit block 610 will pass through the groove 611 and engage with the limit groove 612, thereby facilitating the fixing of the heat insulation cover 401 and the turbine body 2 together.

[0040] Open the steam turbine body 2. The heat insulation board 402 is made of new insulation materials such as aerogel felt, which has a strong heat insulation effect, can effectively prevent the heat loss of steam from being too fast, and improve the heat insulation performance of the steam turbine.

[0041] The driving motor 501 drives the first screw rod 502 to rotate, thereby driving the dehumidification sponge brush 505 to slide left and right along the first screw rod 502 and the guide rod 504, so that the dehumidification sponge brush 505 can wipe off the water vapor generated on the surface of the insulation board 402 due to excessive temperature difference.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] It should be understood that the above description is for illustration and not for limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this patent should not be determined with reference to the above description, but rather with reference to the preceding claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a waiver of such subject matter, nor should it be considered that the applicant has not considered such subject matter to be part of the disclosed inventive subject matter.

Claims

1. A steam turbine heat insulation device, characterized in that: It comprises a base (1), a steam turbine body (2), a heat insulation mechanism (4) and a dehumidification mechanism (5); The heat insulation mechanism (4) comprises a heat insulation cover (401) and a heat insulation board (402); the heat insulation cover (401) is mounted on the outside of the steam turbine body (2), the heat insulation cover (401) and the steam turbine body (2) are detachably connected, and the heat insulation board (402) is fixedly mounted on each inner wall of the heat insulation cover (401); The dehumidification mechanism (5) is located inside the heat insulation board (402), and comprises a ball screw mechanism and a dehumidification sponge brush (505). The ball screw mechanism is arranged at the top of the left and right ends inside the heat insulation cover (401), and the dehumidification sponge brush (505) is connected to the output end of the ball screw mechanism. The dehumidification sponge brush (505) is in contact with the inner wall of the heat insulation board (402).

2. The steam turbine heat insulation device according to claim 1, characterized in that: The ball screw mechanism comprises a driving motor (501), a first screw rod (502), a limit plate (503) and a guide rod (504); the driving motor (501) is fixedly mounted above the left and right ends of the heat insulation cover (401); one end of the first screw rod (502) is fixedly mounted on the transmission end of the driving motor (501); the limit plate (503) is fixedly mounted on the other end of the first screw rod (502); the guide rod (504) is fixedly mounted on the front and rear sides of the inner end of the heat insulation plate (402); the guide rods (504) are symmetrically distributed with the first screw rod (502) as the center; the dehumidifying sponge brush (505) is threadedly connected to the first screw rod (502); and the guide rod (504) passes through the dehumidifying sponge brush (505) and is slidably connected to the dehumidifying sponge brush (505).

3. The steam turbine heat insulation device according to claim 1, characterized in that: The heat insulation board (402) is made of aerogel felt.

4. The steam turbine heat insulation device according to claim 1, characterized in that: The steam turbine body (2) and the heat insulation cover (401) are connected by a connecting mechanism (6).

5. The steam turbine heat insulation device according to claim 4, characterized in that: The connection mechanism (6) comprises a clamping block (601), a clamping slot (602), a knob (603) and a second screw rod (607); the clamping block (601) is fixedly mounted on the front and rear sides of the steam turbine body (2); the clamping slot (602) is fixedly arranged at the lower end of the heat insulation cover (401); the clamping block (601) is matched with the clamping slot (602); the knob (603) is movably mounted on the outer end of the steam turbine body (2); the knob (603) and the second screw rod (607) are connected via a gear set; a thread is formed on the second screw rod (607); A screw slide (608) is connected, the left and right ends of the screw slide (608) are movably connected to connecting rods (609), the free end of the connecting rod (609) is movably connected to a limiting block (610), the left and right ends of the clamping block (601) are provided with grooves (611), and a limiting groove (612) is provided on the clamping groove (602) at a position corresponding to the groove (611), and when the heat insulation cover (401) is connected to the turbine body (2), the limiting block (610) passes through the groove (611) and extends to the inside of the limiting groove (612).

6. The steam turbine heat insulation device according to claim 5, characterized in that: The gear set comprises a rotating shaft, a first bevel gear and a second bevel gear, one end of the rotating shaft is connected to the knob (603), and the other end is connected to the first bevel gear, the second bevel gear is meshed with the first bevel gear, and the second screw rod (607) is connected to the second bevel gear.

7. The steam turbine heat insulation device according to claim 5, characterized in that: A connecting block (613) is arranged on the top of the limiting block (610), and a guide rail (614) is arranged on the clamping block (601). Both ends of the guide rail (614) are located directly above the groove (611), and the guide rail (614) passes through the connecting block (613) and is slidably connected to the connecting block (613).

8. A working method of the steam turbine thermal insulation device according to any one of claims 1 to 7, characterized in that: The heat insulation cover (401) is fixed to the outside of the steam turbine body (2), and the ball screw mechanism drives the dehumidification sponge brush (505) to move, so that the dehumidification sponge brush (505) wipes off the water vapor on the inner wall of the heat insulation board (402).

9. The method for operating the steam turbine heat insulation device according to claim 8, characterized in that: The driving motor (501) of the ball screw mechanism drives the first screw rod (502) to rotate, thereby driving the dehumidification sponge brush (505) to slide left and right along the first screw rod (502) and the guide rod (504), so that the dehumidification sponge brush (505) wipes off the water vapor on the inner wall of the heat insulation board (402).

10. The method for operating a steam turbine heat insulation device according to claim 8, characterized in that: The specific process of fixing the heat shield (401) to the outside of the steam turbine body (2) is as follows: fixing the heat shield (401) to the outside of the steam turbine body (2) so that the clamping block (601) is clamped in the clamping groove (602), and rotating the knob (603) to drive the rotating shaft to rotate, thereby driving the first bevel gear to rotate, thereby driving the second bevel gear to rotate, thereby driving the second screw rod (607) to rotate, thereby driving the screw rod slide (608) to move up and down along the second screw rod (607), and the up and down movement of the screw rod slide (608) drives the connecting rod (609) to extend or close together, and when the connecting rod (609) extends, the limit block (610) will pass through the groove (611) and be clamped with the limit groove (612), thereby fixing the heat shield (401) and the steam turbine body (2) together.

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