Real-time vibration signal acquisition device of small steam turbine

Abstract

The utility model relates to the technical field of steam turbine blade monitoring, in particular to a real-time vibration signal acquisition device of a small steam turbine, which comprises a vibration signal acquisition device and is used for collecting and processing vibration signals generated in the operation process of the small steam turbine. Comprising mounting heads fixed on two sides of the bottom of the vibration data collector, limiting grooves formed in the lower ends of the interiors of the mounting heads, positioning grooves formed in two ends of the limiting grooves, and a probe connected with the front end of the vibration data collector through a data line; the installation assembly comprises an installation seat arranged below the vibration data collector, installation openings formed in the two sides of the top of the installation seat and matched with the installation heads, a guide rod fixed between the two ends in the installation seat, sliding sleeves arranged at the two ends of the guide rod in a sleeving and sliding mode, and positioning heads fixed to the inner walls of the two ends of the sliding sleeves; the vibration data collector can be used in a handheld manner or mounted on a mounting seat, and is quick and convenient to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine blade monitoring, in particular to a real-time vibration signal acquisition device for a small steam turbine. Background Technique

[0002] With the continuous development of the manufacturing industry and the continuous development of power construction, the steam turbine, as the core equipment of China's power system, is a crucial part in China's industry and daily safe power use. Whether the steam turbine can operate safely is an important guarantee for the stable development of the power system. However, with the rapid improvement of steam turbine technology, the structure of the steam turbine has become more and more complex. At the same time, it brings greater difficulties to the fault diagnosis of the steam turbine. The key in the fault diagnosis of the steam turbine is the acquisition of vibration signals.

[0003] It is found that the publication number: CN216791376U discloses a portable steam turbine vibration signal acquisition device. In this technology, it is disclosed that "a portable steam turbine vibration signal acquisition device belongs to the technical field of steam turbine blade monitoring. A portable steam turbine vibration signal acquisition device provided by the utility model includes an eddy current sensor, a sensor clamping assembly and an industrial control computer. The eddy current sensor is arranged on the steam turbine housing; the sensor clamping assembly is used to fix the eddy current sensor on the steam turbine housing. The sensor clamping assembly includes an upper bracket and a lower bracket arranged oppositely. An adjusting rod is arranged between the lower bracket and the upper bracket. A locking member is arranged at the free end of the adjusting rod. An installation bracket for installing the eddy current sensor is arranged on the lower bracket; the industrial control computer includes a fuselage, and a display screen, a keyboard and an information acquisition and processing assembly are arranged on the fuselage" and other technical solutions, and has technical effects such as "being easy to carry, simple to install, capable of measuring anytime and anywhere, and easy to popularize".

[0004] Although this solution realizes portability and enables users to collect steam turbine vibration signals anytime and anywhere, since its design does not support handheld use, it is not flexible and convenient enough when it is necessary to frequently move the monitoring position or collect data at different locations. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a real-time vibration signal acquisition device for a small steam turbine, which has the characteristics that the vibration data collector can be used handheld or installed on the mounting seat, and is fast and convenient during the installation and disassembly process.

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions: A real-time vibration signal acquisition device for a small steam turbine, including a vibration signal acquisition device and used for collecting and processing vibration signals generated by the small steam turbine during operation. The vibration signal acquisition device includes:

[0007] The main component includes a mounting head fixed on both sides of the bottom of the vibration data collector, a limit groove opened at the lower end of the mounting head, positioning grooves opened at both ends of the limit groove, and a probe connected to the front end of the vibration data collector through a data cable;

[0008] The mounting assembly includes a mounting seat arranged below the vibration data collector, mounting openings on both sides of the top of the mounting seat and matched with a mounting head, a guide rod fixed between the two ends of the mounting seat, sliding sleeves for sliding installation on both ends of the guide rod, positioning heads fixed on the inner walls of both ends of the sliding sleeve, and springs mounted on both sides of the middle of the guide rod;

[0009] The fixing component is arranged on the mounting component and is used to adjust the height of the main component when it is placed in use.

[0010] Preferably, the mounting assembly further comprises slots formed on both sides of the middle portion of the lower end of the mounting seat, wherein a slidably mounted detent pin passes through the slot, and the detent pin is fixed to the bottom of the sliding sleeve.

[0011] Preferably, the mounting assembly further comprises limiting surfaces formed on both side surfaces of both ends of the guide rod, and the limiting surfaces cooperate with the limiting grooves.

[0012] Preferably, the mounting assembly further comprises sliding grooves provided on the outer walls at both ends of the guide rod, and the sliding grooves cooperate with the positioning heads.

[0013] Preferably, the mounting assembly further comprises an axle seat hinged at the lower end of the mounting seat, circular holes formed at both ends of the axle seat, and arc holes formed at both ends of the mounting seat.

[0014] Preferably, the fixing assembly includes a fixing frame arranged below the axle seat, a fixing hole opened on the fixing frame, a vertical frame installed through the inside of the fixing frame, and the vertical frame is fixed to the bottom of the axle seat, and a plurality of adjustment holes opened on the vertical frame.

[0015] Beneficial Effects

[0016] The utility model provides a real-time vibration signal acquisition device for a small steam turbine. Compared with the prior art, it has the following beneficial effects:

[0017] (1) By pushing the push pin, the sliding sleeve is driven to slide along the guide rod, and the sliding sleeve drives the positioning head to disengage from the positioning groove, thereby releasing the fixation of the mounting head, so that the main assembly can be removed from the mounting assembly, which is convenient for hand-held use during the detection process.

[0018] (2) By inserting the mounting head on the vibration data collector into the mounting opening on the mounting base, the pressure of the spring rebound pushes the sliding sleeve to slide along the guide rod. The sliding sleeve drives the positioning head to insert into the positioning groove, thereby fixing the mounting head, enabling the main body assembly to be mounted and fixed on the mounting assembly. This facilitates the storage of the main body assembly when not in use and allows it to be directly mounted and fixed on the mounting assembly for use without the need for handholding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 is a structural schematic diagram of the main body assembly in the present utility model;

[0021] Figure 3 is a structural schematic diagram of the mounting assembly and the fixing assembly in the present utility model;

[0022] Figure 4 is a structural schematic diagram of the interior of the mounting assembly in the present utility model;

[0023] Figure 5 is a structural schematic diagram of the sliding sleeve in the present utility model;

[0024] Figure 6 is a structural schematic diagram of the interior of the mounting base in the present utility model.

[0025] In the figure: 1, vibration signal acquisition device; 11, main body assembly; 111, vibration data collector; 112, mounting head; 113, limiting groove; 114, positioning groove; 115, probe; 12, mounting assembly; 121, mounting base; 122, mounting opening; 123, guide rod; 124, sliding sleeve; 125, positioning head; 126, slot hole; 127, pin; 128, spring; 129, limiting surface; 1210, sliding groove; 1211, shaft seat; 1212, round hole; 1213, arc hole; 13, fixing assembly; 131, fixing frame; 132, fixing hole; 133, vertical frame; 134, adjusting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to 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 of 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.

[0027] Please refer to Figures 1-6The utility model provides a technical solution for a real-time vibration signal acquisition device for a small steam turbine: the real-time vibration signal acquisition device for a small steam turbine includes a vibration signal acquisition device 1 and is used to collect and process vibration signals generated by the small steam turbine during operation. The vibration signal acquisition device 1 includes:

[0028] The main body component 11 includes a mounting head 112 fixed on both sides of the bottom of the vibration data collector 111, a limit groove 113 provided at the lower end of the mounting head 112, positioning grooves 114 provided at both ends of the limit groove 113, and a probe 115 connected to the front end of the vibration data collector 111 through a data line;

[0029] The mounting assembly 12 comprises a mounting seat 121 disposed below the vibration data collector 111, mounting openings 122 provided on both sides of the top of the mounting seat 121 and cooperating with the mounting head 112, a guide rod 123 fixed between the two ends of the mounting seat 121, sleeves 124 slidably mounted on both ends of the guide rod 123, positioning heads 125 fixed on the inner walls of both ends of the sleeve 124, and springs 128 sleeved and mounted on both sides of the middle of the guide rod 123;

[0030] The fixing component 13 is arranged on the mounting component 12 and is used to adjust the height of the main component 11 when it is placed in use.

[0031] In this embodiment, when the mounting head 112 on the vibration data collector 111 is inserted into the mounting port 122 on the mounting seat 121, the rebound pressure of the spring 128 pushes the sleeve 124 to slide along the guide rod 123, and the sleeve 124 drives the positioning head 125 to be inserted into the positioning groove 114, thereby fixing the mounting head 112, so that the main component 11 is installed and fixed on the mounting component 12, which is convenient for storing the main component 11 when not in use, and can also be directly installed and fixed on the mounting component 12 for use without holding it.

[0032] Specifically, the mounting assembly 12 further includes slots 126 provided on both sides of the middle portion of the lower end of the mounting seat 121 , a slidably mounted detent pin 127 passes through the slot 126 , and the detent pin 127 is fixed to the bottom of the sliding sleeve 124 .

[0033] In this embodiment, the push pin 127 is driven to drive the sliding sleeve 124 to slide along the guide rod 123, and the sliding sleeve 124 drives the positioning head 125 to disengage from the positioning groove 114, thereby releasing the fixation of the mounting head 112, so that the main component 11 can be disassembled and removed from the mounting component 12, which is convenient for handheld use during the detection process.

[0034] Specifically, the mounting assembly 12 further includes limiting surfaces 129 formed on both side surfaces of both ends of the guide rod 123 , and the limiting surfaces 129 match the limiting grooves 113 .

[0035] In this embodiment, after the mounting head 112 is inserted into the mounting opening 122, the limiting groove 113 on the mounting head 112 is stuck outside the limiting surface 129 on the guide rod 123 for limiting.

[0036] Specifically, the mounting assembly 12 further includes sliding grooves 1210 formed on the outer walls at both ends of the guide rod 123, and the sliding grooves 1210 cooperate with the positioning head 125.

[0037] In this embodiment, when the sliding sleeve 124 drives the positioning head 125 to move, the positioning head 125 slides along the inside of the sliding groove 1210, thereby improving the stability of the positioning head 125 during the movement, so that it can be smoothly inserted into or disengaged from the positioning groove 114.

[0038] Specifically, the mounting assembly 12 further includes a shaft seat 1211 hinged to the lower end of the mounting base 121, round holes 1212 formed at both ends of the shaft seat 1211, and arc-shaped holes 1213 formed at both ends of the mounting base 121.

[0039] In this embodiment, by rotating the mounting base 121 to a suitable angle and then passing a bolt through the arc-shaped hole 1213 and the round hole 1212 to fix the mounting base 121, the angle of the main assembly 11 mounted on the mounting assembly 12 is adjusted and fixed.

[0040] Specifically, the fixing assembly 13 includes a fixing frame 131 disposed below the shaft seat 1211, a fixing hole 132 formed on the fixing frame 131, a vertical frame 133 penetrating through the inside of the fixing frame 131, and the vertical frame 133 is fixed to the bottom of the shaft seat 1211, and a plurality of adjusting holes 134 are formed on the vertical frame 133.

[0041] In this embodiment, by fixing the fixing frame 131 on a bracket or a device, adjusting the vertical frame 133 to a suitable height, and then fixing the vertical frame 133 by passing a knob bolt through the fixing hole 132 and inserting it into the adjusting hole 134, the height of the main assembly 11 mounted on the mounting assembly 12 at the upper end of the vertical frame 133 is adjusted and fixed.

[0042] The working principle and usage process of the present utility model: First, by fixing the fixing frame 131 on a bracket or a device, adjusting the vertical frame 133 to a suitable height, and then fixing the vertical frame 133 by passing a knob bolt through the fixing hole 132 and inserting it into the adjusting hole 134, the height of the main assembly 11 mounted on the mounting assembly 12 at the upper end of the vertical frame 133 is adjusted and fixed; then, by rotating the mounting base 121 to a suitable angle and then passing a bolt through the arc-shaped hole 1213 and the round hole 1212 to fix the mounting base 121, the angle of the main assembly 11 mounted on the mounting assembly 12 is adjusted and fixed;

[0043] Then, by toggling the detent pin 127, the sliding sleeve 124 is driven to slide along the guide rod 123. The sliding sleeve 124 drives the positioning head 125 to disengage from the positioning groove 114, thereby releasing the fixation of the mounting head 112, so that the main body assembly 11 can be detached from the mounting assembly 12, facilitating hand-held use during the detection process;

[0044] Alternatively, the mounting head 112 on the vibration data collector 111 is inserted into the mounting opening 122 on the mounting base 121. The pressure of the spring 128 rebounding drives the sliding sleeve 124 to slide along the guide rod 123. The sliding sleeve 124 drives the positioning head 125 to insert into the positioning groove 114, thereby fixing the mounting head 112, so that the main body assembly 11 is mounted and fixed on the mounting assembly 12, facilitating the storage of the main body assembly 11 when not in use, and enabling it to be directly mounted and fixed on the mounting assembly 12 for use without the need for hand-holding.

[0045] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0046] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Real-time vibration signal acquisition device for a small steam turbine, characterized in that: It includes a vibration signal acquisition device (1) and is used to collect and process the vibration signals generated during the operation of a small steam turbine. The vibration signal acquisition device (1) includes: A main body assembly (11), including mounting heads (112) fixed on both sides of the bottom of a vibration data collector (111), a limit groove (113) opened at the lower end inside the mounting head (112), positioning grooves (114) opened at both ends of the limit groove (113), and a probe (115) connected to the front end of the vibration data collector (111) through a data cable; A mounting assembly (12), including a mounting base (121) arranged below the vibration data collector (111), mounting openings (122) opened on both sides of the top of the mounting base (121) and matching with the mounting heads (112), a guide rod (123) fixed between both ends inside the mounting base (121), sliding sleeves (124) sleeved and slidably mounted on both ends of the guide rod (123), positioning heads (125) fixed on the inner walls of both ends of the sliding sleeves (124), and springs (128) sleeved and mounted on both sides of the middle of the guide rod (123); A fixing assembly (13), arranged on the mounting assembly (12) and used to adjust the height when the main body assembly (11) is placed and used.

2. The real-time vibration signal acquisition device for the small steam turbine according to claim 1, characterized in that: The mounting assembly (12) further includes slot holes (126) opened on both sides of the middle of the lower end of the mounting base (121), a pin (127) slidably mounted through the inside of the slot holes (126), and the pin (127) is fixed at the bottom of the sliding sleeve (124).

3. The real-time vibration signal acquisition device for the small steam turbine according to claim 1, characterized in that: The mounting assembly (12) further includes limit surfaces (129) opened on both sides of the surfaces at both ends of the guide rod (123), and the limit surfaces (129) match with the limit grooves (113).

4. The real-time vibration signal acquisition device for the small steam turbine according to claim 1, characterized in that: The mounting assembly (12) further includes sliding grooves (1210) opened on the outer walls of both ends of the guide rod (123), and the sliding grooves (1210) match with the positioning heads (125).

5. The real-time vibration signal acquisition device for the small steam turbine according to claim 1, wherein: The mounting assembly (12) further includes a shaft seat (1211) hinged to the lower end of the mounting base (121), round holes (1212) opened at both ends of the shaft seat (1211), and arc-shaped holes (1213) opened at both ends of the mounting base (121).

6. The real-time vibration signal acquisition device for the small steam turbine according to claim 5, characterized in that: The fixing assembly (13) includes a fixing frame (131) arranged below the shaft seat (1211), a fixing hole (132) opened on the fixing frame (131), a vertical frame (133) installed through the inside of the fixing frame (131), and the vertical frame (133) is fixed at the bottom of the shaft seat (1211), and a plurality of adjusting holes (134) opened on the vertical frame (133).

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