Rotor hardness detection device

Abstract

The utility model discloses a rotor hardness detection device which comprises a Leeb hardness tester host, a detection pen and a telescopic rod, a transverse plate is fixed on the surface of the detection pen and close to one end of a detection head of the detection pen, a connecting rod is fixed at one end of the telescopic rod, and a clamping assembly is fixed at the other end of the connecting rod. A clamping sleeve used for being connected with the clamping assembly is fixed to the lower surface of the transverse plate. According to the steam turbine rotor detection device, the Leeb hardness tester host, the detection pen, the transverse plate, the telescopic rod, the connecting rod, the shell, the extrusion assembly and the control button are arranged, when the steam turbine rotor detection device is used, the Leeb hardness tester host and handles on the telescopic rod are held by hands, the detection pen is aligned with the surface of a steam turbine rotor, and then the electromagnet of the extrusion assembly is controlled to be powered off through the control button; the second spring extrudes the ejector rod to be popped out from the interior of the shell, the ejector rod is used for pressing the button of the detection pen, and therefore hardness detection of the steam turbine rotor is achieved, and the device is more convenient to detect the hardness of the steam turbine rotor without climbing.

Description

Technical Field

[0001] This utility model relates to the field of rotor hardness testing technology, and in particular to a rotor hardness testing device. Background Technology

[0002] As a core power component, the turbine rotor operates under high temperature, high pressure, and high speed conditions for extended periods. The hardness of its material directly affects its wear resistance, fatigue strength, and service life. Hardness testing is a crucial method for evaluating rotor material performance. It effectively monitors the quality of heat treatment processes, material uniformity, and hardness changes during service, preventing the risk of plastic deformation or fracture due to insufficient hardness.

[0003] Due to the large size of steam turbine rotors, current hardness testing primarily utilizes portable hardness testers (such as Leeb HL and Shore HS), with appropriate scales selected for different materials (e.g., alloy steel, martensitic stainless steel). During testing, it is crucial to ensure the rotor surface is clean and flat to avoid roughness or residual stress interfering with the results. However, Shore hardness testers require a completely vertical downward orientation for testing, which presents high requirements, and the large size of steam turbine rotors makes testing inconvenient. Even when using a Leeb hardness tester, additional lifting devices are still needed, requiring workers to climb to the top of the rotor for testing, which also presents inconvenience. Therefore, further improvements are needed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a rotor hardness testing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rotor hardness testing device, comprising a Leeb hardness tester main unit, a testing pen, and a telescopic rod. A horizontal plate is fixed to the surface of the testing pen near its testing head. A connecting rod is fixed to one end of the telescopic rod, and a snap-fit ​​assembly is fixed to the other end of the connecting rod. A sleeve for connecting the snap-fit ​​assembly is fixed to the lower surface of the horizontal plate. A housing is fixed to the bottom surface of the connecting rod below the button of the testing pen. An opening is provided on the top wall of the housing below the button of the testing pen. A compression assembly is installed inside the housing near the opening. A handle is fixed to the bottom end of the telescopic rod.

[0006] Furthermore, the testing pen is connected to the Leeb hardness tester main unit via a testing line.

[0007] Furthermore, the side wall of the sleeve is provided with a locking hole, and the locking assembly includes a plug block fixedly connected to the connecting rod, and the plug block is inserted into the sleeve. The plug block is provided with a groove on the side near the locking hole, and a first spring is fixedly connected to the inner side wall of the groove. A locking rod is fixed to the other end of the first spring, and the end of the locking rod away from the first spring is locked into the locking hole.

[0008] Furthermore, the extrusion assembly includes a second spring fixed to the bottom wall of the housing, and an end plate is fixed to the top of the second spring. A top rod is fixed to the upper surface of the end plate, and the top rod passes through the opening.

[0009] Furthermore, the extrusion assembly also includes an electromagnet fixed to the bottom wall of the housing. The electromagnet is located below the end plate, and the end plate is made of iron. A control button for controlling the electromagnet to be powered on and off is installed on the surface of the handle.

[0010] Furthermore, a storage battery is installed inside the housing, and the electromagnet is electrically connected to the storage battery.

[0011] Furthermore, the outer wall of the housing is provided with a charging port, which is electrically connected to the battery.

[0012] The beneficial effects of this utility model are:

[0013] 1. In use, this utility model provides a rotor hardness testing device, which includes a Leeb hardness tester main unit, a testing pen, a horizontal plate, a telescopic rod, a connecting rod, a housing, a pressing assembly, and a control button. During use, the user holds the handles on the Leeb hardness tester main unit and the telescopic rod, aligns the testing pen with the surface of the turbine rotor, and then controls the electromagnet of the pressing assembly to be de-energized via the control button. The second spring pressing rod then pops out from inside the housing. The pressing rod is used to press the button on the testing pen, thereby achieving the hardness test of the turbine rotor. Using this device to test the hardness of the turbine rotor is more convenient and eliminates the need for climbing to perform the test.

[0014] 2. When in use, this utility model is a rotor hardness testing device, which includes a handle, a telescopic rod, a connecting rod, a snap-fit ​​assembly, a sleeve, a horizontal plate, and a testing pen. The connecting rod is detachably connected to the horizontal plate through the snap-fit ​​assembly. Therefore, when the telescopic rod is not needed, the snap-fit ​​assembly and the sleeve can be disassembled and the testing pen can be used alone, making it more flexible to use. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 : Overall schematic diagram of this utility model;

[0017] Figure 2 Partial perspective view of this utility model;

[0018] Figure 3 The present utility model Figure 1 Enlarged view of point A in the middle;

[0019] Figure 4 The present utility model Figure 1 Enlarged view of section B in the middle.

[0020] The attached figures are labeled as follows:

[0021] 1. Leeb hardness tester main unit; 2. Testing pen; 3. Horizontal plate; 4. Telescopic rod; 5. Connecting rod; 6. Snap-fit ​​assembly; 61. Insert block; 62. Groove; 63. First spring; 64. Clamping rod; 7. Housing; 71. Opening; 8. Clamping sleeve; 81. Clamping hole; 9. Compression assembly; 91. Second spring; 92. End plate; 93. Top rod; 94. Electromagnet; 10. Battery; 11. Handle; 12. Control button. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-4 As shown, a rotor hardness testing device is disclosed, comprising a Leeb hardness tester main body 1, a testing pen 2, and a telescopic rod 4. A horizontal plate 3 is fixed to the surface of the testing pen 2 and near its testing head. A connecting rod 5 is fixed to one end of the telescopic rod 4, and a snap-fit ​​assembly 6 is fixed to the other end of the connecting rod 5. A sleeve 8 for connecting the snap-fit ​​assembly 6 is fixed to the lower surface of the horizontal plate 3. A housing 7 is fixed to the bottom surface of the connecting rod 5 and below the button of the testing pen 2. An opening 71 is opened on the top wall of the housing 7 and below the button of the testing pen 2. A compression assembly 9 is installed inside the housing 7 near the opening 71. A handle 11 is fixed to the bottom end of the telescopic rod 4.

[0024] The testing pen 2 is connected to the Leeb hardness tester main unit 1 via a testing cable.

[0025] In this embodiment, the specific model of the Leeb hardness tester main unit 1 and the testing pen 2 is the HLN-11A Leeb hardness tester, and its specific working principle is the same as that of the prior art.

[0026] The sleeve 8 has a locking hole 81 on its side wall. The locking assembly 6 includes a plug 61 that is fixedly connected to the connecting rod 5. The plug 61 is inserted into the sleeve 8. The plug 61 has a groove 62 on the side near the locking hole 81. A first spring 63 is fixedly connected to the inner side wall of the groove 62. A locking rod 64 is fixed to the other end of the first spring 63. The end of the locking rod 64 away from the first spring 63 is locked into the locking hole 81.

[0027] When the connecting rod 5 is fixedly connected to the horizontal plate 3 by the sleeve 8 and the snap-fit ​​assembly 6, the clamping rod 64 is first squeezed back into the groove 62, and then the insert block 61 is snapped into the sleeve 8. When the clamping rod 64 coincides with the snap-fit ​​hole 81, the first spring 63 squeezes the clamping rod 64 into the snap-fit ​​hole 81, thereby achieving a fixed connection between the insert block 61 and the sleeve 8, thus achieving a fixed connection between the connecting rod 5 and the horizontal plate 3. At this time, the handle 11 can be held to press the test pen 2 against the rotor surface to perform hardness testing.

[0028] When it is necessary to disassemble the telescopic rod 4 and use the test pen 2 alone, squeeze the lever 64 to separate it from the hole 81, and the insert 61 can be pulled out from the inside of the sleeve 8.

[0029] The extrusion assembly 9 includes a second spring 91 fixed to the bottom wall of the housing 7, and an end plate 92 fixed to the top of the second spring 91. A push rod 93 is fixed to the upper surface of the end plate 92 and passes through the opening 71.

[0030] When the detection pen 2 is used, the second spring 91 presses the push rod 93, causing the push rod 93 to pop out from the housing 7. The push rod 93 is then used to press the button on the detection pen 2 to perform the detection.

[0031] The extrusion assembly 9 also includes an electromagnet 94 fixed to the bottom wall of the housing 7. The electromagnet 94 is located below the end plate 92, and the end plate 92 is made of iron. A control button 12 for controlling the on and off of the electromagnet 94 is installed on the surface of the handle 11.

[0032] Each time a detection action is performed by pressing the button on the detection pen 2 with the push rod 93, the electromagnet 94 can be energized by the control button 12. The electromagnet 94 attracts the end plate 92, thereby driving the push rod 93 to retract into the housing 7.

[0033] The housing 7 contains a storage battery 10, and an electromagnet 94 is electrically connected to the storage battery 10.

[0034] In this embodiment, the battery 10 is a rechargeable battery, which powers the electromagnet 94. The battery 10, the electromagnet 94 and the control button 12 are connected in series, and the control button 12 can be used to directly control the electromagnet 94 to be powered on or off.

[0035] The outer wall of the housing 7 is provided with a charging port, which is electrically connected to the battery 10.

[0036] Working principle: When testing the higher parts of the rotor, first fix the insert 61 to the sleeve 8, thereby fixing the connecting rod 5 to the cross plate 3 and the detection pen 2. Then, control the electromagnet 94 to be energized. The electromagnet 94 attracts the end plate 92, causing the push rod 93 to retract into the housing 7 and reset the detection pen 2. During testing, hold the handle 11 to bring the detection probe of the detection pen 2 into contact with the rotor surface. Then, control the control button 12 on the handle 11 to de-energize the electromagnet 94. The second spring 91 squeezes the push rod 93 to pop out from the housing 7, causing the push rod 93 to press the detection button of the detection pen 2, thereby realizing one detection action.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A rotor hardness testing device, comprising a Leeb hardness tester main unit (1), a testing pen (2), and a telescopic rod (4), characterized in that: A horizontal plate (3) is fixed to the surface of the detection pen (2) and near the detection head. A connecting rod (5) is fixed to one end of the telescopic rod (4). A snap-fit ​​assembly (6) is fixed to the other end of the connecting rod (5). A sleeve (8) for connecting the snap-fit ​​assembly (6) is fixed to the lower surface of the horizontal plate (3). A housing (7) is fixed to the bottom surface of the connecting rod (5) and below the button of the detection pen (2). An opening (71) is opened on the top wall of the housing (7) and below the button of the detection pen (2). A squeezing assembly (9) is installed inside the housing (7) near the opening (71). A handle (11) is fixed to the bottom end of the telescopic rod (4).

2. The rotor hardness testing device according to claim 1, characterized in that: The testing pen (2) is connected to the Leeb hardness tester main unit (1) via a testing line.

3. The rotor hardness testing device according to claim 1, characterized in that: The sleeve (8) has a card hole (81) on its side wall. The carding assembly (6) includes a plug (61) fixedly connected to the connecting rod (5). The plug (61) is inserted into the sleeve (8). The plug (61) has a groove (62) on the side near the card hole (81). A first spring (63) is fixedly connected to the inner side wall of the groove (62). A carding rod (64) is fixed to the other end of the first spring (63). The end of the carding rod (64) away from the first spring (63) is inserted into the card hole (81).

4. The rotor hardness testing device according to claim 1, characterized in that: The extrusion assembly (9) includes a second spring (91) fixed to the bottom wall of the housing (7), and an end plate (92) is fixed to the top of the second spring (91). A top rod (93) is fixed to the upper surface of the end plate (92), and the top rod (93) passes through the opening (71).

5. The rotor hardness testing device according to claim 4, characterized in that: The extrusion assembly (9) also includes an electromagnet (94) fixed to the bottom wall of the housing (7). The electromagnet (94) is located below the end plate (92), and the end plate (92) is made of iron. The handle (11) is equipped with a control button (12) to control the electromagnet (94) to turn on and off.

6. The rotor hardness testing device according to claim 5, characterized in that: A storage battery (10) is installed inside the housing (7), and the electromagnet (94) and the storage battery (10) are electrically connected.

7. The rotor hardness testing device according to claim 6, characterized in that: The outer wall of the housing (7) is provided with a charging port, and the charging port is electrically connected to the battery (10).

Images