A TSI probe anti-resonance mounting device

Abstract

The application provides a TSI probe anti-resonance mounting device, which comprises a steam turbine bearing shell, a shock-absorbing support mechanism is arranged outside the steam turbine bearing shell, the upper end of the shock-absorbing support mechanism is arranged at the bottom of a box body, a sensor fixing mechanism is arranged in the middle of the box body, a resonance offset mechanism is arranged in the inside of the box body, and a box cover is arranged on one side of the box body. When the TSI probe is mounted, the height is adjusted through a plurality of shock-absorbing struts, a stable triangular support is formed in cooperation with a plurality of hydraulic support rods, the box body can be stably mounted on the arc surface of the steam turbine bearing shell, the influence of vibration on the box body can be reduced, the swing and misalignment of the steam turbine bearing vibration parameter monitoring caused by the residual vibration are further offset through the resonance offset mechanism, and the operation safety of the power plant unit is prevented from being harmed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of TSI vibration monitoring, and particularly relates to a TSI probe anti-resonance mounting device. BACKGROUND

[0002] At present, when measuring the bearing bush vibration of a steam turbine in a thermal power plant, a mounting box is arranged on the bearing bush shell of the steam turbine, the mounting box is used as a fixing device of a TSI eddy current sensor probe, each mounting box is connected with a rectangular metal fixing block through a screw, and the rectangular metal fixing block is connected with the bearing bush shell of the steam turbine through a screw. Due to the fact that the fixing position of the eddy current sensor probe is far away from the bearing bush of the steam turbine, the mounting box needs to be extended for a distance. Due to the fact that the sleeve part of the mounting box is too long and lacks an auxiliary support, the connecting parts of the box body are loose, and the overall device has many transfer links. Therefore, during the monitoring of the bearing bush vibration of the steam turbine, the main shaft of the steam turbine itself rotates to generate vibration, and then the whole TSI eddy current sensor probe resonates with the mounting box, so that the bearing bush vibration value of the steam turbine swings or is inaccurate. The swing or inaccuracy of the bearing bush vibration value of the steam turbine can cause the protection of the unit to malfunction, and then cause the unit to trip, thereby endangering the safe operation of the unit.

[0003] The traditional TSI probe mounting device connects the eddy current sensor probe to the mounting box through a sleeve. When the unit is running, due to the fact that there are many transfer links between the probe and the mounting box, the connecting part lacks rigidity, lacks an auxiliary support, and lacks a buffer damper, the whole mounting box can vibrate, and then the measured data can be inaccurate, and in severe cases, the safe operation of the unit can be harmed. SUMMARY

[0004] In view of the above problems, the present application provides a TSI probe anti-resonance mounting device, which aims to solve the technical problem that the TSI probe mounting device in the background technology swings or is inaccurate due to resonance during the monitoring of the unit, and then endangers the safe operation of the unit.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a TSI probe anti-resonance mounting device, comprising a bearing bush shell of a steam turbine, a shock-absorbing support mechanism is arranged on the outside of the bearing bush shell of the steam turbine, the upper end of the shock-absorbing support mechanism is arranged on the bottom of a box body, a sensor fixing mechanism is arranged in the middle of the box body, a resonance cancellation mechanism is arranged in the inside of the box body, and a box cover is arranged on one side of the box body.

[0006] Further, the damping support mechanism comprises a damping fixing ring, the top surface of the damping fixing ring is fixedly connected to the middle part of the bottom surface of the box body, the outer side of the damping fixing ring is rotationally connected to the upper end of a plurality of hydraulic support rods, the lower end of each of the plurality of hydraulic support rods is rotationally connected to the lower part of a damping support column, the upper part of each of the plurality of damping support columns is arranged on the bottom of the box body, and the lower end of each of the plurality of damping support columns is arranged on the outside of the steam turbine bearing shell.

[0007] Further, the damping support column comprises a damping fixing nut, the damping fixing nut is threadedly connected to the upper end of a damping bolt, a damping washer is arranged on the lower side of the damping fixing nut and the upper part of the damping bolt, an upper damping rubber sleeve is arranged on the lower side of the damping washer and the middle part of the damping bolt, the bottom surface of the damping bolt is provided with a height adjusting upper lead screw, the lower part of the height adjusting upper lead screw is threadedly connected to the upper part of a height adjusting cylinder, the lower part of the height adjusting cylinder is reversely threadedly connected to the upper part of a height adjusting lower lead screw, the lower end of the height adjusting lower lead screw is fixedly connected to the outside of the steam turbine bearing shell, the middle part of the height adjusting lower lead screw is threadedly connected to the damping fixing nut, the damping washer is arranged on the lower side of the damping fixing nut and the middle part of the height adjusting lower lead screw, the lower end of the hydraulic support rod is arranged on the lower side of the damping washer and the middle part of the height adjusting lower lead screw, and a lower damping rubber sleeve is arranged on the lower side of the lower end of the hydraulic support rod and the lower part of the height adjusting lower lead screw.

[0008] Further, the bottom surface of the box body is arranged in a triangular pyramid shape.

[0009] Further, the two sides and the bottom surface of the box body are respectively provided with buckles, each of the plurality of buckles is clamped to the outside of the box cover, and the top surface of the box body is provided with a sleeve insertion opening.

[0010] Further, a sealing ring is arranged at the joint of the box body and the box cover.

[0011] Further, the inside of the box body is paved with a copper foil.

[0012] Further, the sensor fixing mechanism comprises an eddy current sensor probe, the eddy current sensor probe is arranged at the lower end of an eddy current sensor extension line, the eddy current sensor probe is arranged at the lower end of a metal threaded sleeve, the metal threaded sleeve is threadedly connected to the middle part of a sleeve adjusting nut, the upper part of the metal threaded sleeve is threadedly connected to a sleeve fixing nut, the middle part of the eddy current sensor extension line passes through a spring sleeve, and the upper end of the eddy current sensor extension line is provided with an eddy current sensor preamplifier.

[0013] Further, the resonance offset mechanism comprises a U-shaped counterweight, the top surface of the U-shaped counterweight is provided with a plurality of upper tension springs, the upper ends of the plurality of upper tension springs are arranged on the inner side of the upper part of the box body, the bottom surface of the U-shaped counterweight is provided with a plurality of lower tension springs, and the lower ends of the plurality of lower tension springs are arranged on the inner bottom surface of the box body.

[0014] Further, the top of the box cover is provided with a sleeve sealing gasket, the two sides and the bottom surface of the box cover are respectively provided with hook insertion blocks, the plurality of hook insertion blocks are respectively clamped with the buckles, and the box cover is provided with a sealing groove at the closing position of the box cover.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] By adjusting the height through a plurality of shock absorbing struts when installing the TSI probe, a stable triangular support is formed in cooperation with a plurality of hydraulic support rods, so that the box body can be stably installed on the curved surface of the turbine bearing shell, and the influence of vibration on the box body can be reduced, and the remaining vibration is further offset by the resonance offset mechanism to prevent the vibration parameters of the turbine bearing from swinging and being misaligned, thereby preventing the operation safety of the power plant unit. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the schematic diagram of the appearance structure of the present application;

[0018] Figure 2 is the schematic diagram of the internal structure opening of the present application;

[0019] Figure 3 is the schematic diagram of the shock absorbing support mechanism structure of the present application;

[0020] Figure 4 is the schematic diagram of the shock absorbing strut structure of the present application;

[0021] Figure 5 is the schematic diagram of the box body structure of the present application;

[0022] Figure 6 is the schematic diagram of the sensor fixing mechanism structure of the present application;

[0023] Figure 7 is the schematic diagram of the resonance offset mechanism structure of the present application;

[0024] Figure 8 is the schematic diagram of the box cover structure of the present application.

[0025] Figure: 1, turbine bearing shell; 2, damping support mechanism; 21, damping fixed ring; 22, hydraulic support rod; 23, damping strut; 231, damping fixed nut; 232, damping bolt; 233, damping washer; 234, upper damping rubber sleeve; 235, height adjustment upper screw; 236, height adjustment cylinder; 237, height adjustment lower screw; 238, lower damping rubber sleeve; 3, box body; 31, buckle; 32, sleeve socket; 33, sealing ring; 4, sensor fixing mechanism; 41, eddy current sensor probe; 42, eddy current sensor extension line; 43, metal threaded sleeve; 44, sleeve adjusting nut; 45, sleeve fixed nut; 46, spring sleeve; 47, eddy current sensor preamplifier; 5, resonance cancellation mechanism; 51, U-shaped counterweight; 52, upper tension spring; 53, lower tension spring; 6, box cover; 61, sleeve sealing pad; 62, hook plug; 63, sealing groove. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present application, the present application will be described in more detail below with reference to the relevant drawings, which show several embodiments of the present application. However, the present application can be implemented in different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixedly attached" to another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions as used herein are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The use of the terms "and / or" includes a combination of one or more of the associated listed items.

[0029] Embodiment, please refer to Figures 1-2 A TSI probe anti-resonance mounting device, comprising a turbine bearing shell 1, the outer part of the turbine bearing shell 1 is provided with a damping support mechanism 2, the upper end of the damping support mechanism 2 is arranged at the bottom of a box body 3, the middle part of the box body 3 is provided with a sensor fixing mechanism 4, the inside of the box body 3 is provided with a resonance cancellation mechanism 5, and one side of the box body 3 is provided with a box cover 6.

[0030] Embodiment, please refer to Figure 3The damping support mechanism 2 comprises a damping fixing ring 21, the top surface of the damping fixing ring 21 is fixedly connected to the middle part of the bottom surface of the box body 3, the outer side of the damping fixing ring 21 is rotationally connected to the upper end of a plurality of hydraulic support rods 22, the lower end of each of the plurality of hydraulic support rods 22 is rotationally connected to the lower part of a damping support column 23, the upper part of each of the plurality of damping support columns 23 is arranged on the bottom of the box body 3, and the lower end of each of the plurality of damping support columns 23 is arranged on the outside of the turbine bearing shell 1. The design adjusts the height through the plurality of damping support columns, cooperates with the plurality of hydraulic support rods to form a stable triangular support, ensures that the box body can be stably installed on the arc surface of the turbine bearing shell, and can reduce the influence of vibration on the box body.

[0031] Embodiment, please refer to Figure 4 The damping support column 23 comprises a damping fixing nut 231, the damping fixing nut 231 is threadedly connected to the upper end of a damping bolt 232, a damping washer 233 is arranged on the lower side of the damping fixing nut 231 and the upper part of the damping bolt 232, an upper damping rubber sleeve 234 is arranged on the lower side of the damping washer 233 and the middle part of the damping bolt 232, a height adjusting upper lead screw 235 is arranged on the bottom surface of the damping bolt 232, the lower part of the height adjusting upper lead screw 235 is threadedly connected to the upper part of a height adjusting cylinder 236, the lower part of the height adjusting cylinder 236 is reversely threadedly connected to the upper part of a height adjusting lower lead screw 237, the lower end of the height adjusting lower lead screw 237 is fixedly connected to the outside of the turbine bearing shell 1, the middle part of the height adjusting lower lead screw 237 is threadedly connected to the damping fixing nut 231, the damping washer 233 is arranged on the lower side of the damping fixing nut 231 and the middle part of the height adjusting lower lead screw 237, the lower side of the damping washer 233 and the middle part of the height adjusting lower lead screw 237 are threadedly connected to the lower end of the hydraulic support rod 22, and a lower damping rubber sleeve 238 is arranged on the lower side of the lower end of the hydraulic support rod 22 and the lower part of the height adjusting lower lead screw 237. The design adjusts the distance between the damping bolt 232 and the height adjusting lower lead screw 237 by rotating the height adjusting cylinder 236, thereby adjusting the height of the damping support column 23, and most of the vibration is isolated through the upper damping rubber sleeve 234 and the lower damping rubber sleeve 238.

[0032] Embodiment, please refer to Figure 5The bottom surface of the box body 3 is in the shape of a triangular pyramid, the two sides and the bottom surface of the box body 3 are respectively provided with buckles 31, the plurality of buckles 31 are clamped to the outside of the box cover 6, the top surface of the box body 3 is provided with a sleeve socket 32, the joint of the box body 3 and the box cover 6 is embedded with a sealing ring 33, the inside of the box body 3 is paved with copper foil, the box body 3 is improved in mechanical strength by being in the shape of a triangular pyramid, the copper foil and the metal base material are paved to have excellent conductivity and provide electromagnetic shielding effect, which can effectively prevent external interference from interfering with the measurement signal, the sealing ring 33 can effectively fix the spring sleeve 46 and the eddy current sensor extension line 42, and can prevent external dust and water from entering the box body 3.

[0033] Embodiment, please refer to Figure 6 The sensor fixing mechanism 4 includes an eddy current sensor probe 41, the eddy current sensor probe 41 is arranged at the lower end of the eddy current sensor extension line 42, the eddy current sensor probe 41 is arranged at the lower end of the metal threaded sleeve 43, the metal threaded sleeve 43 is threadedly connected to the middle part of the sleeve adjusting nut 44, the upper part of the metal threaded sleeve 43 is threadedly connected to the sleeve fixing nut 45, the middle part of the eddy current sensor extension line 42 passes through the spring sleeve 46, and the upper end of the eddy current sensor extension line 42 is provided with an eddy current sensor preamplifier 47, the installation height of the eddy current sensor probe 41 is adjusted by rotating the metal threaded sleeve 43 in the sleeve adjusting nut 44, the metal threaded sleeve 43 is locked by the sleeve fixing nut 45, and the installation height of the eddy current sensor probe 41 is fixed, and the eddy current sensor extension line 42 is protected from being excessively bent by the spring sleeve 46.

[0034] Embodiment, please refer to Figure 7 The resonance cancellation mechanism 5 includes a U-shaped counterweight 51, the top surface of the U-shaped counterweight 51 is provided with a plurality of upper tension springs 52, the upper ends of the plurality of upper tension springs 52 are arranged on the inner side of the upper part of the box body 3, the bottom surface of the U-shaped counterweight 51 is provided with a plurality of lower tension springs 53, and the lower ends of the plurality of lower tension springs 53 are arranged on the bottom surface of the inside of the box body 3, the installation height of the eddy current sensor probe 41 is adjusted by rotating the metal threaded sleeve 43 in the sleeve adjusting nut 44, the metal threaded sleeve 43 is locked by the sleeve fixing nut 45, and the installation height of the eddy current sensor probe 41 is fixed, and the eddy current sensor extension line 42 is protected from being excessively bent by the spring sleeve 46.

[0035] Embodiment, please refer to Figure 8 The top of the box cover 6 is provided with a sleeve sealing pad 61, the two sides and the bottom surface of the box cover 6 are respectively provided with catch blocks 62, the plurality of catch blocks 62 are respectively clamped to the buckles 31, and the joint of the box cover 6 and the box cover 6 is provided with a sealing groove 63, the box body 3 and the box cover 6 are connected by the insertion and cooperation of the plurality of catch blocks 62 and the plurality of buckles 31.

[0036] The application has been described above by way of illustration, and it will be apparent that the inventive concept can be carried out by those skilled in the art without departing from the scope of the application, which is defined by the appended claims.

Claims

1. A TSI probe anti-resonance mounting arrangement comprising a turbine bearing shell (1) characterised in that: The steam turbine bearing shell (1) is externally provided with a damping support mechanism (2), the upper end of the damping support mechanism (2) is arranged at the bottom of a box body (3), the middle part of the box body (3) is provided with a sensor fixing mechanism (4), the inside of the box body (3) is provided with a resonance cancellation mechanism (5), and one side of the box body (3) is provided with a box cover (6); The damping support mechanism (2) comprises a damping fixing ring (21), the top surface of the damping fixing ring (21) is fixedly connected to the middle part of the bottom surface of the box body (3), the outer side of the damping fixing ring (21) is rotatably connected to the upper ends of a plurality of hydraulic support rods (22), the lower ends of the plurality of hydraulic support rods (22) are rotatably connected to the lower parts of a plurality of damping support columns (23), the upper parts of the plurality of damping support columns (23) are arranged at the bottom of the box body (3), and the lower ends of the plurality of damping support columns (23) are arranged at the outside of the steam turbine bearing shell (1); The damping support column (23) comprises a damping fixing nut (231), the damping fixing nut (231) is threadedly connected to the upper end of a damping bolt (232), a damping washer (233) is connected to the lower part of the damping bolt (232) and the upper part of the damping fixing nut (231), an upper damping rubber sleeve (234) is connected to the lower part of the damping bolt (232) and the middle part of the damping fixing nut (231), a height adjusting upper lead screw (235) is arranged on the bottom surface of the damping bolt (232), the lower part of the height adjusting upper lead screw (235) is threadedly connected to the upper part of a height adjusting cylinder (236), the lower part of the height adjusting cylinder (236) is reversely threadedly connected to the upper part of a height adjusting lower lead screw (237), the lower end of the height adjusting lower lead screw (237) is fixedly connected to the outside of the steam turbine bearing shell (1), the middle part of the height adjusting lower lead screw (237) is threadedly connected to the damping fixing nut (231), the damping washer (233) is arranged on the lower part of the height adjusting lower lead screw (237) and the middle part of the damping fixing nut (231), the lower part of the damping washer (233) is connected to the lower end of the hydraulic support rod (22) and the middle part of the height adjusting lower lead screw (237), and a lower damping rubber sleeve (238) is connected to the lower end of the hydraulic support rod (22) and the lower part of the height adjusting lower lead screw (237); The two sides and the bottom surface of the box body (3) are respectively provided with buckles (31), the plurality of buckles (31) are clamped to the outside of the box cover (6), and a sleeve socket (32) is formed in the top surface of the box body (3); The sensor fixing mechanism (4) comprises an eddy current sensor probe (41) arranged at the lower end of an eddy current sensor extension line (42), the eddy current sensor probe (41) is arranged at the lower end of a metal threaded sleeve (43), the metal threaded sleeve (43) is threadedly connected to the middle part of a sleeve adjusting nut (44), the upper part of the metal threaded sleeve (43) is threadedly connected to a sleeve fixing nut (45), the middle part of the eddy current sensor extension line (42) passes through a spring sleeve (46), and the upper end of the eddy current sensor extension line (42) is provided with an eddy current sensor preamplifier (47). The resonance cancellation mechanism (5) comprises a U-shaped counterweight (51), the top surface of the U-shaped counterweight (51) is provided with a plurality of upper tension springs (52), the upper ends of the plurality of upper tension springs (52) are arranged on the inner side of the upper part of the box body (3), and the bottom surface of the U-shaped counterweight (51) is provided with a plurality of lower tension springs (53), the lower ends of the plurality of lower tension springs (53) are arranged on the inner bottom surface of the box body (3). The top of the box cover (6) is provided with a sleeve sealing gasket (61), the two sides and the bottom surface of the box cover (6) are respectively provided with a hook insertion block (62), a plurality of hook insertion blocks (62) are respectively clamped with the buckles (31), and the box cover (6) and the box cover (6) are provided with a sealing groove (63) at the joint.

2. The anti-resonance mounting device for a TSI probe according to claim 1, characterized in that: The bottom surface of the box body (3) is arranged in a triangular pyramid shape.

3. The anti-resonance mounting device for a TSI probe of claim 1, wherein: The joint of the box body (3) and the box cover (6) is embedded with a sealing ring (33).

4. The anti-resonance mounting device for a TSI probe of claim 1, wherein: The inside of the box body (3) is paved with copper foil.

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