Gas turbine exhaust pipe cover opening and closing device connecting structure

Abstract

The invention belongs to the technical field of gas turbine exhaust pipe covers, and particularly relates to a gas turbine exhaust pipe cover opening and closing device connecting structure which comprises an exhaust cover installed on an exhaust pipe through an opening and closing mechanism. A telescopic electric rod is mounted on the inner side of the mounting box through a damping mechanism and a buffering mechanism, and an opening and closing sliding plate is fixedly mounted on a piston rod of the telescopic electric rod through a bolt; according to the scheme, the problem to be solved is that after long-term use, due to long-term vibration and the like, the connecting position of the opening and closing device is damaged or poor connection occurs, and opening and closing of the pipe cover are affected; during use, the exhaust cover is opened and closed through the opening and closing mechanism, the position of the opening and closing pressing plate is adjusted through the adjusting mechanism, the opening and closing pressing plate and the opening and closing rack on the surface are tightly pressed on the exhaust cover, and therefore it is guaranteed that meshing of the opening and closing rack and the exhaust cover is more stable, and opening and closing are more stable; and the phenomenon that opening and closing are influenced by sliding due to poor connection is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of gas turbine exhaust pipe covers, and in particular relates to a connection structure of an opening and closing device of a gas turbine exhaust pipe cover. Background Art

[0002] A gas turbine, a heat engine that converts thermal energy into mechanical energy, is comprised of a compressor, combustion chamber, and turbine. The exhaust pipe, a key channel for exhaust gas discharge, typically requires a retractable cover to provide system sealing and protection.

[0003] The existing gas turbine exhaust pipe is covered and protected by an exhaust pipe cover when not in use, and is opened and closed by an opening and closing device when in use. After long-term use, long-term vibration may cause damage to the connection of the opening and closing device or poor connection, thereby affecting the opening and closing of the pipe cover. Therefore, it is necessary to design a gas turbine exhaust pipe cover opening and closing device connection structure to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to provide a gas turbine exhaust pipe cover opening and closing device connection structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a connection structure for an opening and closing device of an exhaust pipe cover of a gas turbine, comprising an exhaust cover mounted on the exhaust pipe via an opening and closing mechanism, the opening and closing mechanism comprising a mounting box welded to the exhaust pipe, a telescopic electric rod mounted on the inner side of the mounting box via a shock absorbing mechanism and a buffer mechanism, an opening and closing slide being fixedly mounted to the piston rod of the telescopic electric rod via bolts, opening and closing pressure plates being mounted on both sides of the opening and closing slide via an adjusting mechanism, an opening and closing rack being fixedly mounted on the outer surface of the opening and closing pressure plate via screws, the opening and closing rack being meshed with an opening and closing gear ring at one end of the exhaust cover via teeth; The adjusting mechanism includes a tightening screw rotatably installed in the middle of the opening and closing slide, one end of the tightening screw passes through the opening and closing slide and is welded with a rotating head, the outer side of the tightening screw is screwed with a tightening nut through a thread, and the tightening nut is slidably installed in the opening and closing slide through a slide groove, the outer side of the tightening nut is rotatably installed with a tightening push rod through a rotating shaft, and one end of the tightening push rod is rotatably installed with a tightening push plate, and the tightening push plate is fixed to one side of the opening and closing pressure plate by screws.

[0006] Preferably, a guide groove is provided at one end of the opening and closing pressure plate, and a guide rod is slidably installed in the guide groove. One end of the opening and closing pressure plate is rotatably connected to the opening and closing slide plate through the guide groove and the guide rod.

[0007] Preferably, the clamping push rods are symmetrically mounted on the clamping push plate in pairs, and the clamping nuts at one end of the two symmetrical clamping push rods are symmetrically mounted on the clamping screw, and the surfaces of the clamping screws are symmetrically provided with threads corresponding to the positions of the clamping nuts.

[0008] Preferably, the shock-absorbing mechanism includes a shock-absorbing sliding seat slidably installed in the installation box and a support spring fixed to the bottom of the installation box, one end of the support spring is supported on the shock-absorbing sliding seat, and one end of the telescopic electric rod is installed on the shock-absorbing sliding seat.

[0009] Preferably, a damping spring is installed on the inner side of the installation box, a shock-absorbing damping slider is fixedly installed on one end of the damping spring, a pushing block is provided on one side of the shock-absorbing sliding seat corresponding to the shock-absorbing damping slider, and one end of the pushing block is tightly pressed on the shock-absorbing damping slider.

[0010] Preferably, one side of the shock-absorbing damping sliding block and the pushing block are both configured as inclined surfaces, and a ball bearing is mounted on the inclined surface of the pushing block.

[0011] Preferably, the buffer mechanism includes a buffer limit plate fixed to the inner wall of the installation box and a buffer slider slidably installed on the inner wall of the installation box, a buffer spring is installed between the buffer limit plate and the buffer slider, and one end of the buffer spring is fixed to one end of the telescopic electric rod.

[0012] Preferably, the exhaust cover includes a fixed cover plate, a connecting cover plate and a movable cover plate, the connecting cover plate is sequentially stacked and rotatably installed between the fixed cover plate and the movable cover plate, the fixed cover plate is fixedly installed on the outside of the exhaust pipe, and the opening and closing gear ring is fixedly installed on one end of the movable cover plate by screws.

[0013] Preferably, a sliding ring is provided on one side of the connecting cover plate and the fixed cover plate, and the fixed cover plate, the connecting cover plate and the movable cover plate are sequentially stacked and matched with the sliding ring and the sliding groove for rotational connection.

[0014] Preferably, a sealing gasket is fixed on one side of the movable cover plate, and the exhaust covers are closed by the sealing gasket.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the designed opening and closing mechanism, the exhaust cover is opened and closed by the opening and closing mechanism during use, and the position of the opening and closing pressure plate is adjusted by the adjusting mechanism, so that the opening and closing pressure plate and the opening and closing rack on the surface are tightly pressed on the exhaust cover, thereby ensuring that the opening and closing rack and the exhaust cover are more stably engaged, ensuring more stability during opening and closing, and reducing the phenomenon of sliding affecting opening and closing due to poor connection.

[0016] 2. Through the designed shock-absorbing mechanism and buffer mechanism, the shock-absorbing mechanism and buffer mechanism are respectively supported at both ends of the telescopic electric rod during use. When the telescopic electric rod drives the opening and closing pressure plate to extend and slide, the shock-absorbing mechanism and buffer mechanism can provide support and buffering, thereby reducing the phenomenon of fatigue damage at the connection due to long-term operation.

[0017] 3. Through the designed exhaust cover, the connecting cover and the movable cover are slidably connected to each other through a sliding ring when in use, which makes it convenient to stack and retract the fixed cover, connecting cover and movable cover when opened. At the same time, the sealing gasket ensures that the exhaust covers fit tightly together to better protect the opening position of the exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the exhaust cover structure of the present invention; Figure 3 It is a schematic structural diagram of the opening and closing mechanism of the present invention; Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram; Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle; Figure 6 For the present invention Figure 3 The enlarged structural diagram at C in the middle; Figure 7 This is a schematic diagram of the exhaust cover separation structure of the present invention; In the figure: 1. exhaust pipe; 2. opening and closing mechanism; 21. installation box; 22. telescopic electric rod; 23. opening and closing slide plate; 24. opening and closing pressure plate; 25. opening and closing rack; 3. exhaust cover; 31. fixed cover plate; 32. connecting cover plate; 33. movable cover plate; 34. opening and closing gear ring; 35. sliding ring; 36. closing gasket; 4. shock-absorbing mechanism; 41. shock-absorbing sliding seat; 42. supporting spring; 43. pushing block; 44. shock-absorbing damping slider; 45. damping spring; 5. buffer mechanism; 51. buffer limit plate; 52. buffer spring; 53. buffer slider; 6. adjusting mechanism; 61. rotating head; 62. pressing screw; 63. pressing nut; 64. pressing push rod; 65. pressing push plate. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1 to 7 The present invention provides a technical solution: a connection structure of an exhaust pipe cover opening and closing device for a gas turbine, comprising an exhaust cover 3 installed on an exhaust pipe 1 through an opening and closing mechanism 2, the opening and closing mechanism 2 comprising a mounting box 21 welded to the exhaust pipe 1, a telescopic electric rod 22 mounted on the inner side of the mounting box 21 through a shock absorbing mechanism 4 and a buffer mechanism 5, an opening and closing slide 23 fixed to the piston rod of the telescopic electric rod 22 by bolts, an opening and closing pressure plate 24 mounted on both sides of the opening and closing slide 23 through an adjusting mechanism 6, an opening and closing rack 25 fixed to the outer surface of the opening and closing pressure plate 24 by screws, the opening and closing rack 25 being engaged with an opening and closing gear ring 34 at one end of the exhaust cover 3 through teeth, the opening and closing slide 23 being driven by the telescopic electric rod 22 to move, the opening and closing slide 23 driving the opening and closing pressure plate 24 and the opening and closing rack 25 to move, the opening and closing rack 25 being engaged with the opening and closing gear ring 34 through teeth, thereby driving the movable cover 33 to rotate; The adjusting mechanism 6 includes a tightening screw 62 rotatably mounted on the middle of the opening and closing slide 23, one end of the tightening screw 62 passes through the opening and closing slide 23 and is welded with a rotating head 61, the outer side of the tightening screw 62 is screwed with a tightening nut 63 through a thread, and the tightening nut 63 is slidably mounted in the opening and closing slide 23 through a slide groove, and a tightening push rod 64 is rotatably mounted on the outer side of the tightening nut 63 through a rotating shaft, and a tightening push rod 64 is rotatably mounted on one end of the tightening push rod 64, and the tightening push plate 65 is fixed to one side of the opening and closing pressure plate 24 by screws; the tightening push rods 64 are symmetrically mounted on the tightening push plates 65 in pairs, and the tightening nuts 63 at one end of the two symmetrical tightening push rods 64 are symmetrically mounted on the tightening screw 62, and the surface of the tightening screw 62 is symmetrically provided with threads corresponding to the position of the tightening nuts 63, so that the tightening screw 62 can drive the two symmetrical tightening nuts 63 to move relative to each other during use, and then drive the tightening push rods 64 and the tightening push plates 65 to stably rise and fall.

[0021] Further, see Figures 1 to 7 One end of the opening and closing pressure plate 24 is provided with a guide groove, and a guide rod is slidably installed in the guide groove. One end of the opening and closing pressure plate 24 is rotatably connected to the opening and closing slide 23 through the guide groove and the guide rod, which makes it convenient to rotate and adjust the position of the opening and closing pressure plate 24 during use, thereby better driving the opening and closing rack 25 to adjust the position.

[0022] From the above description, it can be seen that the present invention has the following beneficial effects: when in use, the exhaust cover 3 is opened and closed by the opening and closing mechanism 2, and the position of the opening and closing pressure plate 24 is adjusted by the adjustment mechanism 6, so that the opening and closing pressure plate 24 and the opening and closing rack 25 on the surface are tightly pressed on the exhaust cover 3, thereby ensuring that the opening and closing rack 25 and the exhaust cover 3 are more stably engaged, ensuring that it is more stable when opening and closing, and reducing the phenomenon of poor connection and sliding affecting opening and closing.

[0023] Example 2: Please refer to Figures 1 to 7 As shown, based on the first embodiment, the present invention provides a technical solution: the shock absorbing mechanism 4 includes a shock absorbing sliding seat 41 slidably mounted in the mounting box 21 and a support spring 42 fixed to the bottom of the mounting box 21, one end of the support spring 42 is supported on the shock absorbing sliding seat 41, and one end of the telescopic electric rod 22 is mounted on the shock absorbing sliding seat 41. The thrust generated when the telescopic electric rod 22 is running can be buffered by the shock absorbing sliding seat 41 sliding on the support spring 42; a damping spring 45 is installed on the inner side of the mounting box 21, and a shock absorbing damping slider 44 is fixedly mounted on one end of the damping spring 45. A pushing block 43 is provided on one side of the shock-absorbing sliding seat 41 corresponding to the shock-absorbing damping slider 44, and one end of the pushing block 43 is tightly pressed on the shock-absorbing damping slider 44. The pushing block 43 pushes the shock-absorbing damping slider 44 to press on the damping spring 45 for auxiliary buffering. When the pushing block 43 pushes the shock-absorbing damping slider 44, the shock-absorbing damping slider 44 is pressed against the inner wall of the installation box 21 for friction damping and shock absorption; one side of the shock-absorbing damping slider 44 and the pushing block 43 are both set to inclined surfaces, and balls are installed on the inclined surface of the pushing block 43, which makes it convenient for the pushing block 43 to push the shock-absorbing damping slider 44 to fit against the inner wall of the installation box 21 when in use.

[0024] Further, see Figures 1 to 7 The buffer mechanism 5 includes a buffer limit plate 51 fixed to the inner wall of the installation box 21 and a buffer slider 53 slidably installed on the inner wall of the installation box 21. A buffer spring 52 is installed between the buffer limit plate 51 and the buffer slider 53. One end of the buffer spring 52 is fixed to one end of the telescopic electric rod 22. The buffer slider 53 slides on the inner wall of the installation box 21 to assist in shock absorption, and cooperates with the buffer spring 52 to further protect the telescopic electric rod 22.

[0025] The shock absorbing mechanism 4 and the buffer mechanism 5 of the above technical solution are respectively supported at both ends of the telescopic electric rod 22 by the shock absorbing mechanism 4 and the buffer mechanism 5 when in use. When the telescopic electric rod 22 drives the opening and closing pressure plate 24 to extend and slide, the shock absorbing mechanism 4 and the buffer mechanism 5 can be used for support and buffering, thereby reducing the phenomenon of fatigue damage at the connection due to long-term operation.

[0026] Further, see Figures 1 to 7When the cam 33 is unlocked, the cam 33 is unlocked and the door 32 is unlocked, so that the cam 33 can be unlocked and the door 32 can be unlocked.

[0027] The exhaust cover 3 using the above technical solution is connected to the movable cover 33 by sliding connection with each other through the sliding ring 35 when in use, which facilitates the stacking and retraction of the fixed cover 31, the connecting cover 32 and the movable cover 33 when opened, and at the same time cooperates with the sealing gasket 36 to ensure that the exhaust covers 3 fit tightly together to better protect the opening position of the exhaust pipe 1.

[0028] The working principle and use process of the present invention are as follows: when in use, the opening and closing slide 23 is driven by the telescopic electric rod 22, and the opening and closing slide 23 drives the opening and closing pressure plate 24 and the opening and closing rack 25 to move. The opening and closing rack 25 is engaged with the opening and closing gear ring 34 through the teeth, thereby driving the movable cover 33 to rotate, and the sliding ring 35 and the sliding groove drive the connecting cover 32 to be retracted to the fixed cover 31 in turn, thereby opening the exhaust pipe 1 for use. The thrust generated when the telescopic electric rod 22 is running can be pressed on the supporting spring by the damping sliding seat 41. The spring 42 is used for buffering, and at the same time, the pushing block 43 pushes the shock-absorbing damping slider 44 to press on the damping spring 45 to assist in buffering. When the inclined surface pushing block 43 pushes the shock-absorbing damping slider 44, the shock-absorbing damping slider 44 is pressed against the inner wall of the installation box 21 for friction damping, and the buffer slider 53 slides on the inner wall of the installation box 21 to assist in shock absorption, and cooperates with the buffer spring 52 to further protect the telescopic electric rod 22. After long-term use, the opening and closing rack 25 and the opening and closing gear ring 34 become loose due to activity, and the tightening screw 62 can be rotated by rotating the rotating head 61. The tightening screw 62 drives the tightening nut 63 to move, and the tightening nut 63 drives the tightening push rod 64 to rotate and cooperate with the tightening push plate 65 to push the opening and closing pressure plate 24 and the opening and closing rack 25 to move their positions, thereby ensuring that the opening and closing rack 25 is more stable on the opening and closing gear ring 34 through tooth meshing.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0030] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A gas turbine exhaust pipe cover opening and closing device connection structure, characterized in that: The exhaust cover (3) is mounted on the exhaust pipe (1) via an opening and closing mechanism (2), wherein the opening and closing mechanism (2) comprises a mounting box (21) welded to the exhaust pipe (1), a telescopic electric rod (22) is mounted on the inner side of the mounting box (21) via a shock absorbing mechanism (4) and a buffer mechanism (5), a piston rod of the telescopic electric rod (22) is fixedly mounted with an opening and closing slide (23) via bolts, opening and closing pressure plates (24) are mounted on both sides of the opening and closing slide (23) via an adjusting mechanism (6), an opening and closing rack (25) is fixedly mounted on the outer surface of the opening and closing pressure plate (24) via screws, and the opening and closing rack (25) is meshed with an opening and closing gear ring (34) at one end of the exhaust cover (3) via teeth; The regulating mechanism (6) includes a tightening screw (62) rotatably mounted on the middle of the opening and closing slide (23), one end of the tightening screw (62) passes through the opening and closing slide (23) and is welded with a rotating head (61), the outer side of the tightening screw (62) is screwed with a tightening nut (63) through a thread, and the tightening nut (63) is slidably mounted in the opening and closing slide (23) through a slide groove, the outer side of the tightening nut (63) is rotatably mounted with a tightening push rod (64) through a rotating shaft, one end of the tightening push rod (64) is rotatably mounted with a tightening push plate (65), and the tightening push plate (65) is fixedly mounted on one side of the opening and closing pressure plate (24) by screws.

2. A gas turbine exhaust pipe cover opening and closing device connection structure according to claim 1, characterized in that: One end of the opening and closing pressure plate (24) is provided with a guide groove, and a guide rod is slidably installed in the guide groove. One end of the opening and closing pressure plate (24) is rotatably connected to the opening and closing slide plate (23) through the guide groove and the guide rod.

3. The gas turbine exhaust pipe cover opening and closing device connection structure according to claim 1, characterized in that: The pressing push rods (64) are symmetrically mounted on the pressing push plate (65) in pairs, and the pressing nuts (63) at one end of the two symmetrical pressing push rods (64) are symmetrically mounted on the pressing screw (62), and the surface of the pressing screw (62) is symmetrically provided with threads corresponding to the position of the pressing nut (63).

4. The gas turbine exhaust pipe cover opening and closing device connection structure according to claim 1, characterized in that: The shock absorbing mechanism (4) comprises a shock absorbing sliding seat (41) slidably mounted in the mounting box (21) and a support spring (42) fixed to the bottom of the mounting box (21), one end of the support spring (42) is supported on the shock absorbing sliding seat (41), and one end of the telescopic electric rod (22) is mounted on the shock absorbing sliding seat (41).

5. The gas turbine exhaust pipe cover opening and closing device connection structure according to claim 4, characterized in that: A damping spring (45) is installed inside the installation box (21), and a shock-absorbing damping slider (44) is fixedly installed on one end of the damping spring (45). A pushing block (43) is provided on one side of the shock-absorbing sliding seat (41) corresponding to the shock-absorbing damping slider (44), and one end of the pushing block (43) is tightly pressed on the shock-absorbing damping slider (44).

6. The gas turbine exhaust pipe cover opening and closing device connection structure according to claim 5, characterized in that: One side of the shock-absorbing damping slider (44) and the pushing block (43) is configured as an inclined surface, and a ball bearing is installed on the inclined surface of the pushing block (43).

7. The gas turbine exhaust pipe cover opening and closing device connection structure according to claim 1, characterized in that: The buffer mechanism (5) comprises a buffer limit plate (51) fixed to the inner wall of the installation box (21) and a buffer slider (53) slidably mounted on the inner wall of the installation box (21); a buffer spring (52) is mounted between the buffer limit plate (51) and the buffer slider (53); one end of the buffer spring (52) is fixed to one end of the telescopic electric rod (22).

8. The gas turbine exhaust pipe cover opening and closing device connection structure according to claim 1, characterized in that: The exhaust cover (3) comprises a fixed cover plate (31), a connecting cover plate (32) and a movable cover plate (33), wherein the connecting cover plate (32) is sequentially stacked and rotatably mounted between the fixed cover plate (31) and the movable cover plate (33), the fixed cover plate (31) is fixedly mounted on the outside of the exhaust pipe (1), and the opening and closing gear ring (34) is fixedly mounted on one end of the movable cover plate (33) by means of screws.

9. The gas turbine exhaust pipe cover opening and closing device connection structure according to claim 8, characterized in that: A sliding ring (35) is provided on one side of the connecting cover plate (32) and the fixed cover plate (31), and the fixed cover plate (31), the connecting cover plate (32) and the movable cover plate (33) are sequentially stacked and rotated in conjunction with the sliding ring (35) and the sliding groove.

10. The gas turbine exhaust pipe cover opening and closing device connection structure according to claim 9, characterized in that: A sealing gasket (36) is fixedly attached to one side of the movable cover plate (33), and the exhaust covers (3) are sealed by the sealing gasket (36).

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