A kind of debugging device of online monitoring steam turbine blade vibration equipment

Abstract

The utility model relates to debugging device technical field, especially a kind of debugging device of online monitoring steam turbine blade vibration equipment, including, detection mechanism, it includes first cross plate, first chute on the first cross plate is opened, and sensor mounting bracket is located in the first cross plate side, the first cross plate is opened with multiple limit slots, fixed mechanism, it includes the sliding block of slidingly penetrating first chute, one end of the sliding block is connected with sensor mounting bracket, extrusion assembly for the fixed sliding block and sensor mounting bracket is arranged on the sliding block, the sliding block position is accurately fixed by extrusion assembly and limit slot, and then the sensor position is fixed, first cross plate is further fixed on monitoring steam turbine blade vibration equipment, so that sensor can multiple position test blade, and not be influenced by vibration, so that the result of test is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of debugging device technology, and in particular to a debugging device for online monitoring of turbine blade vibration equipment. Background Technology

[0002] During turbine operation, the blades are constantly vibrating under the influence of steam flow. Drastic changes in unit load or long-term operating conditions deviating from design conditions can affect blade safety. If a blade develops a crack during operation, and a blade vibration monitoring system can confirm that the crack is causing its operating condition to differ from other blades, then further cracking and breakage can be prevented. This allows for proactive shutdown and blade replacement, improving unit operational safety and reducing power plant diameter losses.

[0003] Since blade vibration monitoring systems primarily utilize sensors to measure vibration at the blade tip, the structure of the blade tip shroud significantly impacts sensor placement. To obtain the optimal sensor installation position, preliminary vibration monitoring and commissioning of identical blades must be conducted in-plant. However, current sensors for monitoring turbine blades are not easily adjustable and fixed. While published patent 201920388741.X allows for sensor position adjustment, it relies mainly on tightening the nut and using thread preload to resist vibration. Under prolonged high-frequency vibration, the threads are prone to loosening, leading to sensor wobbling or movement and affecting detection results.

[0004] Therefore, a commissioning device for an online monitoring system for turbine blade vibration is proposed. Utility Model Content

[0005] In this section, as well as in the abstract and title of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract, and the title of this application. Such simplifications or omissions shall not be used to limit the scope of this utility model.

[0006] To address the shortcomings of existing technologies, one objective of this utility model is to provide a debugging device for online monitoring of turbine blade vibration.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a debugging device for an online monitoring equipment for turbine blade vibration, comprising: a detection mechanism, which includes a first horizontal plate, a first sliding groove formed on the first horizontal plate, and a sensor mounting bracket provided on one side of the first horizontal plate, wherein the first horizontal plate is provided with a plurality of limiting grooves, and a fixing mechanism, which includes a slider that slides through the first sliding groove, one end of the slider being connected to the sensor mounting bracket, and the slider being provided with a pressing component for fixing the slider and the sensor mounting bracket.

[0008] As a preferred embodiment of the debugging device for the online monitoring equipment for turbine blade vibration of this utility model, the slider is provided with an installation groove, the extrusion assembly is disposed inside the installation groove, the extrusion assembly includes a second slide groove provided on the slider, the second slide groove is connected to the first slide groove, a first extrusion plate is disposed inside the installation groove, a handle is connected to the first extrusion plate, the end of the handle away from the first extrusion plate slides out of the second slide groove, a fixing plate is connected to the slider, and the fixing plate and the handle are connected by a spring.

[0009] As a preferred embodiment of the debugging device for the online monitoring equipment for turbine blade vibration of the present invention, the extrusion assembly further includes a limiting block connected to the first extrusion plate, and the limiting groove matches the limiting block.

[0010] As a preferred embodiment of the debugging device for the online monitoring equipment for turbine blade vibration of the present invention, the device further includes a pushing mechanism, which is mounted on a slider. The pushing mechanism includes a second extrusion plate disposed inside the mounting groove, a first inclined surface and a first plane disposed on the second extrusion plate, and a second inclined surface and a second plane disposed on the first extrusion plate.

[0011] As a preferred embodiment of the debugging device for the online monitoring equipment for turbine blade vibration of the present invention, wherein: a support rod is connected to the second extrusion plate, and the end of the support rod away from the second extrusion plate slides out of the mounting groove and is connected to a crank handle.

[0012] As a preferred embodiment of the debugging device for the online monitoring equipment for turbine blade vibration of this utility model, the support rod and the second extrusion plate are rotatably connected by a rotating shaft, and a stop bar is connected to the support rod. A notch is opened on the slider, and the notch matches the stop bar.

[0013] As a preferred embodiment of the debugging device for the online monitoring equipment for turbine blade vibration of this utility model, the baffle is provided in multiple manner.

[0014] As a preferred embodiment of the debugging device for the online monitoring equipment for turbine blade vibration of this utility model, the first horizontal plate has two assembly holes.

[0015] As a preferred embodiment of the debugging device for the online monitoring equipment for turbine blade vibration of the present invention, the detection mechanism further includes a vertical plate disposed on one side of the first horizontal plate and a corner plate disposed on one side of the vertical plate. The vertical plate and the corner plate are also provided with a first sliding groove. The vertical plate is connected to the first horizontal plate through a fixing mechanism and a pushing mechanism, and the corner plate is connected to the sensor mounting bracket through a fixing mechanism and a pushing mechanism.

[0016] In a preferred embodiment of the debugging device for the online monitoring equipment for turbine blade vibration described in this utility model, the materials of the slider and the limiting block are TiAl alloy.

[0017] The beneficial effects of this utility model are as follows: by pulling the slider to move inside the first slide groove, the slider drives the sensor mounting bracket to move, and the sensor mounting bracket drives the sensor on it to move. When the sensor is adjusted to the appropriate position, the position of the slider is precisely fixed by the extrusion component and the limiting groove, thereby fixing the position of the sensor. Then, the first horizontal plate is fixed on the turbine blade vibration monitoring device, so that the sensor can test the blade at multiple positions without being affected by vibration, making the test results more accurate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the 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.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the first embodiment of the present invention.

[0020] Figure 2 This is a top view of the fixed mechanism of this utility model.

[0021] Figure 3 This is a schematic diagram of the extrusion assembly of this utility model.

[0022] Figure 4 This is a schematic diagram of the left-side cross-section of the fixing mechanism of this utility model.

[0023] Figure 5 This is a schematic diagram of the propulsion mechanism of this utility model.

[0024] Figure 6This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0025] To make the objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0028] Example 1

[0029] Reference Figure 1 This embodiment provides a debugging device for an online monitoring equipment for turbine blade vibration, including a detection mechanism 100, which includes a first horizontal plate 101, a first sliding groove 102 on the first horizontal plate 101, and a sensor mounting bracket 103 on one side of the first horizontal plate 101. The sensor mounting bracket 103 is used to install sensors, and the installation method can be bolts. A fixing mechanism 200 is connected to the sensor mounting bracket 103. The fixing mechanism 200 includes a slider 201 that slides through the first sliding groove 102. One end of the slider 201 is connected to the sensor mounting bracket 103, and the other end of the slider 201 has a mounting groove 201a. A pressing component 202 for fixing the slider 201 and the sensor mounting bracket 103 is provided inside the mounting groove 201a. The pressing component 202 can be bolt pressing or limiting, wedge pressing, or cylinder pressing.

[0030] The slider 201 is T-shaped and consists of a horizontal section and a vertical section when viewed from above. The vertical section slides inside the first slide groove 102, and one end of the vertical section is fixedly connected to the sensor mounting bracket 103. The other end of the vertical section is connected to the horizontal section. The distance between the horizontal section and the sensor mounting bracket 103 is equal to the thickness of the first horizontal plate 101. That is, the side of the horizontal section and the sensor mounting bracket 103 that are close to each other are respectively attached to the two sides of the first horizontal plate 101 that are far apart from each other. The mounting groove 201a is located inside the horizontal section.

[0031] By pulling the slider 201 to move inside the first slide groove 102, the slider 201 drives the sensor mounting bracket 103 to move, and the sensor mounting bracket 103 drives the sensor on it to move. When the sensor is adjusted to the appropriate position, the position of the slider 201 is precisely fixed by the squeezing component 202 and the limiting groove 101a, thereby fixing the position of the sensor. Then, the first horizontal plate 101 is fixed on the turbine blade vibration monitoring equipment, so that the sensor can test the blade at multiple positions without being affected by vibration, making the test results more accurate.

[0032] Example 2

[0033] Reference Figure 1 and Figure 2 The extrusion assembly 202 includes a second groove 202a formed on the slider 201, which communicates with the first groove 102. A first extrusion plate 202b is provided inside the mounting groove 201a. A handle 202c is connected to the first extrusion plate 202b. One end of the handle 202c away from the first extrusion plate 202b slides out of the second groove 202a. A fixing plate 202d is connected to the slider 201. The fixing plate 202d and the handle 202c are connected by a spring 202e.

[0034] The second slide groove 202a is a straight groove, and the handle 202c can only move in a straight line along the second slide groove 202a, which ensures that the spring 202e will only be compressed in a straight line, thereby ensuring the stability of the spring 202e. In this embodiment, the fixing block can also be omitted, and the spring 202e can be directly set inside the mounting groove 201a, with one end of the spring 202e connected to the first extrusion plate 202b and the other end of the spring 202e connected to the inner wall of the mounting groove 201a.

[0035] During adjustment, first pull the handle 202c. The handle 202c moves the first pressing plate 202b away from the first horizontal plate 101, so that the first pressing plate 202b is no longer in contact with the surface of the first horizontal plate 101. At the same time, the handle 202c compresses the spring 202e, causing the spring 202e to contract. When the slider 201 moves to the appropriate position, release the handle. Under the action of the spring 202e, the handle 202c returns to its original position. The handle 202c moves the first pressing plate 202b back to its original position, so that the first pressing plate 202b presses against the surface of the first horizontal plate 101, thereby fixing the slider 201 and thus fixing the sensor mounting bracket 103. This prevents the slider 201 from shifting due to vibration, which could lead to the sensor mounting bracket 103 and the sensor on it shifting, thus affecting the detection structure.

[0036] The rest of the structure is the same as in Example 1.

[0037] Example 3

[0038] Reference Figure 1 - Figure 3 The extrusion assembly 202 also includes a limiting block 202f connected to the first extrusion plate 202b. There can be two limiting blocks 202f, which are symmetrically arranged about the first extrusion plate 202b. The two limiting blocks 202f are located at the two ends of the first extrusion plate 202b that are far apart from each other. Multiple limiting grooves 101a are provided on the first horizontal plate 101, and the limiting grooves 101a match the limiting blocks 202f.

[0039] Unlike Embodiment 2, in this embodiment, when the sensor mounting bracket 103 is adjusted to the appropriate position, the handle 202c is released. Under the action of the spring 202e, the first pressing plate 202b is reset, causing the two limiting blocks 202f on the first pressing plate 202b to be inserted into the two limiting grooves 101a at the corresponding positions, thereby locking the slider 201. Compared with the traditional pressing and fixing, as long as the limiting block 202f is located in the limiting groove 101a, the slider 201 will not be offset, thus preventing the sensor from shifting during testing and affecting the detection. This is especially important for vibration equipment, where the limiting method is needed for positioning.

[0040] The rest of the structure is the same as in Example 2.

[0041] Example 4

[0042] Reference Figure 4 and Figure 5 It also includes a pushing mechanism 300, which is disposed on the slider 201. The pushing mechanism 300 includes a second extrusion plate 301 disposed inside the mounting groove 201a, a first inclined surface 302 and a first flat surface 303 disposed on the second extrusion plate 301, and a second inclined surface 304 and a second flat surface 305 disposed on the first extrusion plate 202b. The first inclined surface 302 and the second inclined surface 304 correspond to each other.

[0043] Unlike the previous embodiment, in this case, by pushing the second extrusion plate 301, the second extrusion plate 301 presses the second inclined surface 304 on the first extrusion plate 202b through the first inclined surface 302, causing the first extrusion plate 202b to move towards the first horizontal plate 101. Under the action of the second slide groove 202a, the first extrusion plate 202b will only move in a straight line, ensuring the stability of the second extrusion plate 301 pressing the second inclined surface 304 on the first extrusion plate 202b through the first inclined surface 302. When the first plane 303 on the second extrusion plate 301 and the first extrusion plate 202b... When the second plane 305 is in position, the first extrusion plate 202b cannot retract due to the influence of the plane. Compared with the spring 202e fixed in the above embodiment, it is more stable. At the same time, unlike the above embodiment, in the initial state, the first extrusion plate 202b does not contact the surface of the first horizontal plate 101. When the first extrusion plate 202b contacts the surface of the first horizontal plate 101 or the limiting block 202f enters the limiting groove 101a, the spring 202e is stretched. When the second extrusion plate 301 is reset, the spring 202e drives the extrusion block to reset.

[0044] Furthermore, a support rod 301a is connected to the second extrusion plate 301. One end of the support rod 301a away from the second extrusion plate 301 slides out of the mounting groove 201a and is connected to a rocker handle 301b. The rocker handle 301b and the support rod 301a facilitate pushing the second extrusion plate 301. At the same time, in this embodiment, when the rocker handle 301b is in contact with the surface of the slider 201, the second extrusion plate 301 moves to a suitable position.

[0045] The rest of the structure is the same as in Example 3.

[0046] Example 5

[0047] Reference Figure 1 and Figure 6The support rod 301a and the second extrusion plate 301 are rotatably connected via a rotating shaft 301c. A stop bar 301d is connected to the support rod 301a. A notch 201b is provided on the slider 201, matching the stop bar 301d. When the handle 202c pushes the second extrusion plate 301 via the support rod 301a, the stop bar 301d passes through the notch 201b and enters the mounting groove 201a. After the second extrusion plate 301 moves to the appropriate position, the handle 202c is rotated, and the handle 202c... 02c drives the stop bar 301d to rotate via the support rod 301a, causing the stop bar 301d to be misaligned with the notch 201b. At this time, the side of the handle 202c near the stop bar 301d is in contact with the outer wall of the slider 201, and the side of the stop bar 301d near the handle 202c is in contact with the inner wall of the mounting groove 201a. As a result, when the device vibrates, it is affected by the stop bar 301d and the handle 202c, and the second extrusion plate 301 will not move, thus ensuring the connection between the limiting block 202f and the limiting groove 101a.

[0048] Furthermore, multiple baffles 301d are provided, and the distance between two adjacent baffles 301d is the wall thickness of the slider 201, that is, the distance between the outer wall of the slider 201 and the inner wall of the mounting groove 201a, so that the second extrusion plate 301 can adjust the pushing distance. In this embodiment, the first plane 303 and the second plane 305 can both be omitted.

[0049] Furthermore, two mounting holes 101b are provided on the first horizontal plate 101, which are used to connect the first horizontal plate 101 to the turbine blade vibration monitoring device.

[0050] Furthermore, the detection mechanism 100 also includes a vertical plate 104 disposed on one side of the first horizontal plate 101, and a corner plate 105 disposed on one side of the vertical plate 104. The vertical plate 104 and the corner plate 105 are also provided with a first sliding groove 102. The vertical plate 104 is connected to the first horizontal plate 101 through a fixing mechanism 200 and a pushing mechanism 300. The corner plate 105 is connected to the vertical plate 104 through a horizontal plate, a fixing mechanism 200 and a pushing mechanism 300. The corner plate 105 is connected to the sensor mounting bracket 103 through a fixing mechanism 200 and a pushing mechanism 300. The corner plate 105 is obtuse-angled and consists of a vertical section and an inclined section. The first sliding groove 102 is provided on the inclined section.

[0051] The arrangement of the first horizontal plate 101, the vertical plate 104, and the corner plate 105 allows for flexible adjustment of the sensor's position relative to the blade tip in the axial, circumferential, and radial directions, thereby enabling more comprehensive testing of the blade.

[0052] Furthermore, the slider 201 and the limiting block 202f are made of TiAl alloy, which has a room temperature tensile strength of 870 MPa and a density of only 4 g / cm³.3 It has extremely high strength (1 / 2 that of steel), maintaining a strength of 670MPa even at 700℃, excellent heat resistance and deformation resistance, and its raw material cost is far lower than that of conventional titanium alloys.

[0053] The remaining structures are the same as in Embodiment 4. It should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A debugging device for an online monitoring system for turbine blade vibration, characterized in that: include, The testing mechanism (100) includes a first horizontal plate (101), a first groove (102) formed on the first horizontal plate (101), and a sensor mounting bracket (103) provided on one side of the first horizontal plate (101). The first horizontal plate (101) is provided with multiple limiting grooves (101a); The fixing mechanism (200) includes a slider (201) that slides through the first groove (102), one end of the slider (201) being connected to the sensor mounting bracket (103), and the slider (201) being provided with a pressing assembly (202) for fixing the slider (201) to the sensor mounting bracket (103).

2. The commissioning device for online monitoring of turbine blade vibration equipment as described in claim 1, characterized in that: The slider (201) has a mounting groove (201a), and the extrusion assembly (202) is disposed inside the mounting groove (201a); The extrusion assembly (202) includes a second groove (202a) formed on the slider (201), the second groove (202a) communicating with the first groove (102), a first extrusion plate (202b) is provided inside the mounting groove (201a), a handle (202c) is connected to the first extrusion plate (202b), the end of the handle (202c) away from the first extrusion plate (202b) slides out of the second groove (202a), a fixing plate (202d) is connected to the slider (201), and the fixing plate (202d) and the handle (202c) are connected by a spring (202e).

3. The commissioning device for online monitoring of turbine blade vibration equipment as described in claim 2, characterized in that: The extrusion assembly (202) further includes a limiting block (202f) connected to the first extrusion plate (202b); The limiting groove (101a) matches the limiting block (202f).

4. The commissioning device for online monitoring of turbine blade vibration equipment as described in claim 2 or 3, characterized in that: It also includes a pushing mechanism (300), which is disposed on the slider (201). The pushing mechanism (300) includes a second extrusion plate (301) disposed inside the mounting groove (201a), a first inclined surface (302) and a first flat surface (303) disposed on the second extrusion plate (301), and a second inclined surface (304) and a second flat surface (305) disposed on the first extrusion plate (202b).

5. The commissioning device for online monitoring of turbine blade vibration equipment as described in claim 4, characterized in that: A support rod (301a) is connected to the second extrusion plate (301). The end of the support rod (301a) away from the second extrusion plate (301) slides out of the mounting groove (201a) and is connected to a rocker handle (301b).

6. The commissioning device for online monitoring of turbine blade vibration equipment as described in claim 5, characterized in that: The support rod (301a) and the second extrusion plate (301) are rotatably connected by a rotating shaft (301c), and a stop bar (301d) is connected to the support rod (301a); The slider (201) has a notch (201b) that matches the stop bar (301d).

7. The commissioning device for online monitoring of turbine blade vibration equipment as described in claim 6, characterized in that: Multiple baffles (301d) are provided.

8. The commissioning device for online monitoring of turbine blade vibration equipment as described in claim 1 or 7, characterized in that: Two assembly holes (101b) are provided on the first horizontal plate (101).

9. The commissioning device for online monitoring of turbine blade vibration equipment as described in claim 8, characterized in that: The detection mechanism (100) further includes a vertical plate (104) disposed on one side of the first horizontal plate (101) and a corner plate (105) disposed on one side of the vertical plate (104). The vertical plate (104) and the corner plate (105) are also provided with a first sliding groove (102). The vertical plate (104) is connected to the first horizontal plate (101) through a fixing mechanism (200) and a pushing mechanism (300). The corner plate (105) is connected to the sensor mounting bracket (103) through a fixing mechanism (200) and a pushing mechanism (300).

10. The commissioning device for online monitoring of turbine blade vibration equipment as described in claim 3 or 9, characterized in that: The slider (201) and the limiting block (202f) are made of TiAl alloy.

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