Turbine bolt crack detection device

Abstract

The utility model discloses a steam turbine bolt crack detection device which comprises a base plate, supporting legs, an adjusting assembly, a bottom plate, a fixing assembly and an infrared detector, the adjusting assembly is arranged on the upper side of the base plate, a motor is started to drive a positive and negative lead screw to rotate, so that two moving blocks slide along guide rods, and at the moment, the base plate is driven to rotate; the distance between the two clamping plates is changed to adapt to the lengths of different bolts, so that the device can meet the detection requirements of various bolts, and the flexibility of the device is improved; a fixing assembly is arranged on the upper side of the bottom plate, a push plate on the upper side can be driven to move by starting an air cylinder, a toothed plate on one side drives a gear to rotate, meanwhile, a toothed plate on the other side is driven, a push plate on the lower side is driven to move, the two push plates are made to be close to a bolt to be detected to fix the bolt, the bolt is prevented from shaking in the detection process and falling off, and the detection efficiency is improved. And through cooperation of a screw and a pressing plate, the fixing effect can be further improved, and the device stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt detection, in particular to a crack detection device for steam turbine bolts. Background Art

[0002] A steam turbine is a main device in a modern thermal power plant and is also used in the metallurgical industry, chemical industry, and ship power plants. Steam turbine bolts are important components of a steam turbine unit, which directly affect the safety and economy of the steam turbine unit. Therefore, it is often necessary to use a detection device to detect them to prevent multiple failure forms caused by aging. A crack detection device for steam turbine bolts described in the authorized publication number CN216560263U can quickly fix and clamp a steam turbine bolt through an installation unit and can detect cracks in steam turbine bolts with different diameters. The power unit can drive the installation unit to rotate, and then the outer surface of the steam turbine bolt can be comprehensively detected for cracks. However, the prior art still has the following defects:

[0003] 1. In the prior art, the position of the fixed block is fixed and cannot be adjusted according to the length of different bolts, which has certain limitations.

[0004] 2. The fixing effect of the prior art on bolts is average, and there is a risk of falling due to shaking during the detection process.

[0005] The information disclosed in this background art section is only intended to increase the understanding of the overall background of the present utility model and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0006] The technical problem to be solved by the present utility model is to overcome the above defects and provide a crack detection device for steam turbine bolts.

[0007] To solve the above technical problem, the technical solution provided by the present utility model is a crack detection device for steam turbine bolts, including:

[0008] A substrate, the substrate is arranged above the ground;

[0009] Support legs, four of the support legs are fixedly connected to the lower side of the substrate;

[0010] Adjusting components, two of the adjusting components are respectively fixedly connected to the front and rear ends of the upper side of the substrate. Two reverse threaded rods are rotatably connected to the upper side of the substrate. Two moving blocks are sleeved on the reverse threaded rods. Four guide rods for cooperating with the moving blocks are fixedly connected to the upper side of the substrate. A clamping plate is fixedly connected to the upper side of the moving block. Two motors for cooperating with the reverse threaded rods are fixedly connected to one end of the upper side of the substrate;

[0011] The bottom plates, and four of the bottom plates are arranged above the substrate;

[0012] The fixing components, and four of the fixing components are respectively arranged on the upper sides of the four bottom plates;

[0013] The infrared detectors, and two of the infrared detectors are arranged above the substrate.

[0014] As an improvement, the fixing component includes:

[0015] The fixing frame, and the fixing frame is fixedly connected to the upper side of the bottom plate;

[0016] The gears, and two of the gears are respectively rotatably connected to the front and rear inner walls of the fixing frame;

[0017] The toothed plates, and four of the toothed plates are respectively used in cooperation with the two gears and are slidably connected to the inner wall of the fixing frame;

[0018] The push plates, and two of the push plates are respectively used in cooperation with the four toothed plates and are slidably connected to the inner wall of the fixing frame;

[0019] The air cylinder, and the air cylinder is used in cooperation with the upper push plate and is fixedly connected to the upper outer wall of the fixing frame.

[0020] As an improvement, rubber pads are fixedly connected to the opposite sides of the two push plates.

[0021] As an improvement, a screw rod is arranged above the bottom plate, and a pressing plate is fixedly connected to one side of the screw rod close to the fixing frame.

[0022] As an improvement, an anti-slip pad is fixedly connected to the lower side of the support leg.

[0023] As an improvement, a fixing plate for cooperating with the infrared detector is fixedly connected to the upper side of the substrate.

[0024] As an improvement, a support frame is fixedly connected to the front end of the lower side of the substrate, and a storage box is arranged inside the support frame.

[0025] As an improvement, a control panel is fixedly connected to the front side of the substrate.

[0026] The advantages of the present utility model compared with the prior art are as follows: 1. An adjusting component is arranged on the upper side of the substrate of the present utility model. By starting the motor, the positive and negative screw rod can be driven to rotate, so that the two moving blocks start to slide along the guide rod. At this time, the distance between the two clamping plates will also change to adapt to the lengths of different bolts, enabling the device to meet the detection requirements of various bolts and improving the flexibility of the device.

[0027] 2. The utility model is provided with a fixing component on the upper side of the bottom plate. By starting the air cylinder, the push plate on the upper side can be driven to move, so that the tooth plate on one side drives the gear to rotate. At the same time, the tooth plate on the other side will also be driven to start driving the push plate on the lower side to move, so that the two push plates approach the bolt to be detected and fix it, avoiding dropping caused by shaking during the detection process. Cooperating with the screw rod and the pressing plate can further improve the fixing effect and enhance the stability of the device. Brief Description of the Drawings

[0028] Figure 1 is a three-dimensional schematic diagram of the utility model.

[0029] Figure 2 is a top view of the utility model.

[0030] Figure 3 is a front view of the utility model.

[0031] Figure 4 is an exploded view of part of the structure of the utility model.

[0032] As shown in the figure:

[0033] 1. Substrate;

[0034] 2. Support leg;

[0035] 3. Anti-slip pad;

[0036] 4. Adjusting component; 41. Positive and negative lead screw; 42. Moving block; 43. Guide rod; 44. Clamping plate; 45. Motor;

[0037] 5. Bottom plate;

[0038] 6. Fixing component; 61. Fixing frame; 62. Gear; 63. Tooth plate; 64. Push plate; 65. Air cylinder; 66. Screw rod; 67. Pressing plate;

[0039] 7. Fixing plate;

[0040] 8. Infrared detector;

[0041] 9. Support frame;

[0042] 10. Storage box;

[0043] 11. Control panel. Detailed Description of the Preferred Embodiment

[0044] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0045] In the description of the utility model, it should be noted that, unless otherwise clearly defined and limited, terms such as "installation", "provided with", "connection", etc. shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0046] Embodiment 1:

[0047] As Figures 1 to 4 shown, this embodiment proposes a steam turbine bolt crack detection device, including: a substrate 1, support legs 2, an adjustment assembly 4, a bottom plate 5, a fixing assembly 6, and an infrared detector 8. The substrate 1 is arranged above the ground and is used to provide support for the remaining components.

[0048] Among them, four support legs 2 are fixedly connected to the lower side of the substrate 1. The support legs 2 are made of high-strength steel. Four bottom plates 5 are arranged above the substrate 1. A non-slip pad 3 is fixedly connected to the lower side of the support legs 2. The support legs 2 can provide a supporting force for the substrate 1, while the non-slip pad 3 can enhance the friction between the support legs 2 and the ground to prevent the device from sliding.

[0049] A fixing plate 7 is fixedly connected to the upper side of the substrate 1. Infrared detectors 8 are fixedly connected to the upper ends of the front and rear sides of the fixing plate 7. A control panel 11 is fixedly connected to the front side of the substrate 1. The infrared detectors 8 and the control panel 11 are both prior arts, and their connection methods and operating principles are common knowledge and will not be elaborated here. By starting the infrared detectors 8, the surface of the steam turbine bolts can be detected to timely discover existing cracks.

[0050] Two adjusting components 4 are respectively fixedly connected to the front and rear ends of the upper side of the substrate 1. Two left - right - hand threaded screws 41 are rotatably connected to the upper side of the substrate 1. Two moving blocks 42 are sleeved on the left - right - hand threaded screws 41. Threads for cooperating with the left - right - hand threaded screws 41 are provided inside the moving blocks 42. Four guide rods 43 for cooperating with the moving blocks 42 are fixedly connected to the upper side of the substrate 1. The guide rods 43 penetrate through the moving blocks 42 and are slidably connected to them to provide a supporting force for the moving blocks 42 and prevent them from flipping during movement. A clamping plate 44 is fixedly connected to the upper side of the moving block 42. Two motors 45 for cooperating with the left - right - hand threaded screws 41 are fixedly connected to one end of the upper side of the substrate 1. The output end of the motor 45 can rotate in two directions and is fixedly connected to one end of the left - right - hand threaded screw 41. By starting the motor 45, the left - right - hand threaded screw 41 can be driven to rotate, causing the two moving blocks 42 to start sliding along the guide rods 43. At this time, the distance between the two clamping plates 44 will also change to adapt to the lengths of different bolts, enabling the device to meet the detection requirements of various bolts and improving the flexibility of the device.

[0051] Four fixing components 6 are respectively arranged on the upper sides of the four base plates 5. The fixing component 6 includes: a fixing frame 61, a gear 62, a toothed plate 63, a push plate 64, and a cylinder 65. The fixing frame 61 is fixedly connected to the upper side of the base plate 5. Two gears 62 are respectively rotatably connected to the front and rear inner walls of the fixing frame 61. Four toothed plates 63 are respectively used in cooperation with the two gears 62 and are slidably connected to the inner wall of the fixing frame 61. The four toothed plates 63 are respectively meshed with the two sides of the two gears 62, enabling the push plates 64 on both sides of the gear 62 to move synchronously. Two push plates 64 are respectively used in cooperation with the four toothed plates 63 and are slidably connected to the inner wall of the fixing frame 61. The opposite sides of the two push plates 64 are respectively fixedly connected to the two toothed plates 63, enabling the toothed plates 63 to drive the push plates 64 to move. The cylinder 65 is used in cooperation with the upper push plate 64 and is fixedly connected to the upper outer wall of the fixing frame 61. The movable end of the cylinder 65 penetrates through the side wall of the fixing frame 61 and is fixedly connected to the upper push plate 64. Rubber pads are fixedly connected to the opposite sides of the two push plates 64. The rubber pads can enhance the friction between the push plates 64 and the bolt to be detected and prevent it from sliding. By starting the cylinder 65, the upper push plate 64 can be driven to move, causing one side of the toothed plate 63 to drive the gear 62 to rotate. At the same time, the toothed plate 63 on the other side will also be driven to start driving the lower push plate 64 to move, so that the two push plates 64 approach the bolt to be detected and fix it, preventing it from shaking and falling during the detection process.

[0052] Embodiment 2:

[0053] The solution in Embodiment 1 will be further introduced below in combination with the specific working mode, as detailed in the following description:

[0054] One side of the clamping plate 44 is threadedly connected with a screw rod 66 passing through it. One end of the screw rod 66 is fixedly connected with a knob. The side wall of the knob is provided with anti-slip lines, which can enhance the friction between it and the palm of the user, facilitating the user to rotate the screw rod 66. One end of the screw rod 66 close to the fixed frame 61 is fixedly connected with a pressing plate 67. By rotating the screw rod 66, the pressing plate 67 gradually approaches and presses against one end of the bolt to be detected, thereby fixing both ends of the bolt, further improving the fixing effect and enhancing the stability of the device.

[0055] Embodiment 3:

[0056] The solution in Embodiment 2 will be further introduced below in combination with the specific working mode, as described in detail below:

[0057] A support frame 9 is fixedly connected to the front end of the lower side of the substrate 1. A storage box 10 is arranged inside the support frame 9 for placing auxiliary tools such as marker pens, facilitating the staff to access. A handle is fixedly connected to the front outer wall of the storage box 10. Two iron-made limit blocks are fixedly connected to the lower outer wall of the storage box 10. A limit groove for cooperating with the limit blocks is opened on the lower inner wall of the support frame 9. A magnet is embedded in the inner wall of the limit groove. The magnet can generate an attractive force on the limit blocks, and it can be fixed inside the support frame 9 without manual force to prevent the storage box 10 from falling.

[0058] The electrical components mentioned in this article are all electrically connected to the external main controller and 220V mains. And the main controller can be a conventional known device such as a computer for control. The detailed descriptions of known functions and known components are omitted in the specific implementation manners of the present disclosure. To ensure the compatibility of the device, the operation means adopted are consistent with the parameters of market instruments.

[0059] The above describes the present invention and its implementation manners. Such a description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the spirit of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A steam turbine bolt crack detection device, characterized in that, Including: A substrate (1), the substrate (1) is arranged above the ground; Support legs (2), four of the support legs (2) are fixedly connected to the lower side of the substrate (1); Adjusting components (4), two of the adjusting components (4) are respectively fixedly connected to the front and rear ends of the upper side of the substrate (1). Two reverse threaded rods (41) are rotatably connected to the upper side of the substrate (1). Two moving blocks (42) are sleeved on the reverse threaded rods (41). Four guide rods (43) for cooperating with the moving blocks (42) are fixedly connected to the upper side of the substrate (1). A clamping plate (44) is fixedly connected to the upper side of the moving block (42). Two motors (45) for cooperating with the reverse threaded rods (41) are fixedly connected to one end of the upper side of the substrate (1); Bottom plates (5), four of the bottom plates (5) are arranged above the substrate (1); Fixing components (6), four of the fixing components (6) are respectively arranged on the upper sides of the four bottom plates (5); Infrared detectors (8), two of the infrared detectors (8) are arranged above the substrate (1).

2. The steam turbine bolt crack detection device according to claim 1, characterized in that, The fixing component (6) includes: A fixing frame (61), the fixing frame (61) is fixedly connected to the upper side of the bottom plate (5); Gears (62), two of the gears (62) are respectively rotatably connected to the front and rear inner walls of the fixing frame (61); Tooth plates (63), four of the tooth plates (63) respectively cooperate with the two gears (62) and are slidably connected to the inner wall of the fixing frame (61); Push plates (64), two of the push plates (64) respectively cooperate with the four tooth plates (63) and are slidably connected to the inner wall of the fixing frame (61); A cylinder (65), the cylinder (65) cooperates with the upper push plate (64) and is fixedly connected to the upper outer wall of the fixing frame (61).

3. The steam turbine bolt crack detection device according to claim 2, characterized in that: Rubber pads are fixedly connected to the opposite sides of the two push plates (64).

4. A steam turbine bolt crack detection device according to claim 2, characterized in that: A screw rod (66) is arranged above the bottom plate (5), and a pressing plate (67) is fixedly connected to the side of the screw rod (66) close to the fixing frame (61).

5. The steam turbine bolt crack detection device according to claim 1, characterized in that: Anti-slip pads (3) are fixedly connected to the lower sides of the support legs (2).

6. The steam turbine bolt crack detection device according to claim 1, wherein: A fixing plate (7) for cooperating with the infrared detector (8) is fixedly connected to the upper side of the substrate (1).

7. The steam turbine bolt crack detection device according to claim 1, characterized in that: A support frame (9) is fixedly connected to the front end of the lower side of the substrate (1), and a storage box (10) is arranged inside the support frame (9).

8. A steam turbine bolt crack detection device according to claim 1, characterized in that: A control panel (11) is fixedly connected to the front side of the substrate (1).

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