Dry type axial flow reaction turbine blade corrosion monitoring device and method

Abstract

The application discloses a kind of dry type axial flow reaction turbine blade corrosion monitoring device and method, the device includes: support, setting in turbine shell;Simulated rotor, detachably set on support and rotatably set, for simulating the rotation and corrosion condition of turbine blade.Simulated rotor rotatably set on support, can be rotated under gas pressure and the operating state of the rotor to be measured turbine rotor remains consistent, and the corrosion condition of turbine blade can be conveniently determined by weighing rotor removed, compared with disassembling turbine blade, simple operation reduces labor intensity.Through the corrosion monitoring device, the corrosion state of rotor blade can be accurately and timely monitored, which is convenient for operators and equipment maintenance personnel to find problems in advance and handle, eliminates equipment hazards in time, avoids making equipment stop, and reduces the frequency of failure.

Description

Technical Field

[0001] This invention relates to the field of corrosion monitoring technology, and in particular to a corrosion monitoring device and method for dry axial flow reaction turbine blades. Background Technology

[0002] Even after dry dust removal, blast furnace gas still contains moisture and a small amount of salt impurities. As the gas expands and performs work in the turbine stage, its temperature gradually decreases. The salt in the gas precipitates out in solid form and adheres to the turbine's moving and stationary blades, the inner wall of the casing, and the outlet pipes, forming solid deposits with the dust in the gas. During unit operation, as these deposits accumulate and partially detach, the dynamic balance of the TRT turbine rotor is disrupted, causing excessive vibration and resulting in a turbine shutdown. Currently, the only way to detect problems is by monitoring vibration levels, but by the time vibration occurs, internal corrosion is already severe, making early warning impossible. Summary of the Invention

[0003] To address some or all of the technical problems existing in the prior art, the present invention provides a dry axial flow reaction turbine blade corrosion monitoring device and method.

[0004] In a first aspect, a corrosion monitoring device for dry axial flow reaction turbine blades is provided, comprising: a support column disposed within the turbine housing; and a simulated rotor detachably disposed on the support column and rotatably disposed thereon, for simulating the rotation and corrosion of turbine blades.

[0005] In some alternative implementations, the support pillar is made of fiberglass.

[0006] In some alternative implementations, the simulated rotor is made of the same material as the turbine blades.

[0007] In some alternative implementations, the support column includes a base, a vertical rod, a horizontal rod, and a support seat; the base is fixed inside the turbine housing, one end of the vertical rod is connected to the base and the other end extends downward, one end of the horizontal rod is perpendicularly connected to the bottom end of the vertical rod, the support seat is rotatably disposed at the other end of the horizontal rod, and the simulated rotor is mounted on the support seat.

[0008] In some alternative implementations, the simulated rotor includes a ring and a half-shaft extending radially inward from the inner wall of the ring, the half-shaft being connected to the support.

[0009] In some alternative implementations, there are multiple semi-shafts, which are evenly distributed circumferentially.

[0010] In some alternative implementations, the half-shaft is bolted to the support base.

[0011] In some alternative implementations, the simulated rotor is positioned inside the turbine housing opposite the manhole.

[0012] Secondly, a method for corrosion monitoring using the dry axial-flow reaction turbine blade corrosion monitoring device described in any of the above claims is provided, comprising:

[0013] During routine maintenance shutdowns of the turbine, the simulated rotor is removed and weighed. The difference between the simulated rotor's weight and its initial weight is used to determine the corrosion status of the turbine blades. Alternatively, the corrosion status of the simulated rotor can be observed through the manhole.

[0014] The main advantages of the technical solution of this invention are as follows:

[0015] The present invention relates to a corrosion monitoring device and method for dry axial-flow reaction turbine blades. A simulated rotor is rotatably mounted on a support column, rotating under gas pressure to maintain consistency with the operating state of the turbine rotor under test. The corrosion status of the turbine blades can be conveniently determined by removing and weighing the rotor. Compared to disassembling turbine blades, this method is simpler and reduces labor intensity. This corrosion monitoring device and method can accurately monitor the corrosion status of rotor blades in real time, facilitating early detection and handling of problems by operators and equipment maintenance personnel, timely elimination of potential equipment hazards, prevention of equipment downtime, and reduction of the frequency of malfunctions. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and constitute a part of this invention, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a front view of a dry axial flow reaction turbine blade corrosion monitoring device provided in an embodiment of the present invention;

[0018] Figure 2 This is a side view of a dry axial flow reaction turbine blade corrosion monitoring device provided in an embodiment of the present invention;

[0019] Figure 3 This is a top view of a dry axial flow reaction turbine blade corrosion monitoring device provided in an embodiment of the present invention;

[0020] Figure 4 A schematic diagram showing the location of the dry axial flow reaction turbine blade corrosion monitoring device installed on the turbine according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram showing the location of the dry axial flow reaction turbine blade corrosion monitoring device installed on the turbine, according to an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Support column, 101-Base, 102-Vertical rod, 103-Horizontal rod, 104-Support seat, 2-Simulated rotor, 201-Ring, 202-Half shaft. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0025] The technical solutions provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] In a first aspect, embodiments of the present invention provide a corrosion monitoring device for dry axial-flow reaction turbine blades, as shown in the attached... Figure 1-3 As shown, it includes: a support column 1, which is installed inside the turbine housing; and a simulated rotor 2, which is detachably installed on the support column 1 and can be rotated, for simulating the rotation and corrosion of turbine blades.

[0027] In use, support column 1 is located inside the turbine housing, serving as the mounting base for the simulated rotor 2. The simulated rotor 2 is rotatably mounted on support column 1. Gas pressure drives the simulated rotor 2 to rotate, and its state mirrors the operating state of the turbine blade being tested. Through simulation under the same environment, the simulated rotor 2 can accurately and objectively reflect the corrosion status of the turbine blade. The simulated rotor 2 is detachable; simply removing and weighing it allows for assessment of the turbine blade's corrosion condition.

[0028] In summary, the corrosion monitoring device for dry axial-flow reaction turbine blades provided in this embodiment of the invention simulates a rotor 2 rotatably mounted on a support column 1. This rotor can rotate under gas pressure, maintaining the same operating state as the turbine rotor being tested. The corrosion status of the turbine blades can be conveniently determined by removing and weighing the rotor. Compared to disassembling turbine blades, this method is simpler and reduces labor intensity. This corrosion monitoring device can accurately monitor the corrosion status of the rotor blades in real time, facilitating early detection and handling of problems by operators and equipment maintenance personnel. This allows for timely elimination of potential equipment hazards, preventing equipment downtime and reducing the frequency of malfunctions.

[0029] A schematic diagram showing the location of the corrosion monitoring device installed on the turbine can be found in the attached diagram. Figure 4 and attached Figure 5The circled area in the diagram indicates the installation location of the corrosion monitoring device.

[0030] In this embodiment, the simulated rotor 2 is made of the same material as the turbine blades. This design allows the corrosion of the simulated rotor 2 to more accurately and objectively reflect the corrosion of the turbine blades.

[0031] In some optional implementations of this embodiment, the support column 1 is made of fiberglass. Fiberglass is adaptable to acidic corrosive environments, provides good support, and avoids the problem of hanging plates falling off due to corrosion of the support column 1.

[0032] In some optional implementations of this embodiment, as shown in the appendix... Figure 1 and 2 As shown, the support column 1 includes a base 101, a vertical rod 102, a horizontal rod 103, and a support base 104. The base 101 is fixed inside the turbine housing. One end of the vertical rod 102 is connected to the base 101, and the other end extends downward. One end of the horizontal rod 103 is perpendicularly connected to the bottom end of the vertical rod 102. The support base 104 is rotatably mounted on the other end of the horizontal rod 103, and the simulated rotor 2 is mounted on the support base 104. The positional relationship between the simulated rotor 2 and the base 101 can be adjusted using the horizontal rod 103 and the vertical rod 102, thereby placing the base 101 in a position that facilitates fixing and the simulated rotor 2 in a position that facilitates observation and removal.

[0033] A bearing may be provided between the support base 104 and the crossbar 103 to facilitate the rotation of the support base 104.

[0034] As attached Figure 1 As shown, the simulated rotor 2 includes a ring 201 and a half-shaft 202 extending radially inward from the inner wall of the ring 201. The half-shaft 202 is connected to the support base 104. There are multiple half-shafts 202, which are evenly distributed circumferentially. The ring 201 is supported by multiple half-shafts 202, resulting in a more stable connection and preventing detachment.

[0035] Optionally, the half-shaft 202 is connected to the support base 104 by bolts. The threaded connection facilitates installation and disassembly, allowing the simulated rotor 2 to be removed for weighing. The support base 104 and the half-shaft 202 may each have corresponding threaded holes, into which bolts are inserted and fixed to secure the half-shaft 202 to the support base 104.

[0036] Optionally, the simulated rotor 2 is positioned inside the turbine housing opposite the manhole. This arrangement facilitates observation of the corrosion status of the simulated rotor 2 through the manhole, or allows for its removal through the manhole.

[0037] Secondly, embodiments of the present invention provide a method for corrosion monitoring using the dry axial-flow reaction turbine blade corrosion monitoring device of any of the above claims, comprising:

[0038] During routine maintenance shutdown of the turbine, the simulated rotor 2 is removed and weighed. The difference between the weight of the simulated rotor 2 and its initial weight is used to determine the corrosion status of the turbine blades; alternatively, the corrosion status of the simulated rotor 2 can be observed through the manhole.

[0039] The corrosion monitoring method for dry axial flow reaction turbine blades provided in this invention can accurately monitor the corrosion status of rotor blades in real time, making it easier for operators and equipment maintenance personnel to detect and handle problems in advance, eliminate potential equipment hazards in a timely manner, avoid equipment downtime, and reduce the frequency of failures.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Additionally, the terms "front," "back," "left," "right," "upper," and "lower" in this document refer to the placement shown in the accompanying drawings.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A corrosion monitoring device for dry axial-flow reaction turbine blades, characterized in that, include: The support column is located inside the turbine housing; The simulated rotor is detachably mounted on the support and is rotatable, used to simulate the rotation and corrosion of turbine blades; The support column includes a base, a vertical rod, a horizontal rod, and a support seat; The base is fixed inside the turbine housing. One end of the vertical rod is connected to the base, and the other end extends downward. One end of the horizontal rod is perpendicularly connected to the bottom end of the vertical rod. The support seat is rotatably disposed on the other end of the horizontal rod, and the simulated rotor is mounted on the support seat. The simulated rotor includes a ring and a half-shaft extending radially inward from the inner wall of the ring, the half-shaft being connected to the support base; The gas pressure drives the simulated rotor to rotate. The state of the simulated rotor is consistent with the operating state of the turbine blade being tested. Through tracking simulation under the same environment, the simulated rotor can realistically and objectively reflect the corrosion status of the turbine blade.

2. The dry axial flow reaction turbine blade corrosion monitoring device according to claim 1, characterized in that, The support column is made of fiberglass.

3. The dry axial flow reaction turbine blade corrosion monitoring device according to claim 2, characterized in that, The simulated rotor is made of the same material as the turbine blades.

4. The dry axial flow reaction turbine blade corrosion monitoring device according to claim 1, characterized in that, The number of the semi-shafts is multiple, and the multiple semi-shafts are evenly distributed along the circumferential direction.

5. The dry axial flow reaction turbine blade corrosion monitoring device according to claim 4, characterized in that, The half-shaft is connected to the support base by bolts.

6. The dry axial flow reaction turbine blade corrosion monitoring device according to claim 5, characterized in that, The simulated rotor is positioned inside the turbine housing opposite the manhole.

7. A method for corrosion monitoring using the dry axial flow reaction turbine blade corrosion monitoring device according to any one of claims 1-6, characterized in that, include: During routine maintenance shutdowns of the turbine, the simulated rotor is removed and weighed. The difference between the simulated rotor's weight and its initial weight is used to determine the corrosion status of the turbine blades. Alternatively, the corrosion status of the simulated rotor can be observed through the manhole.

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