CN214404399U - Large-shaft vibration sensor support - Google Patents
Large-shaft vibration sensor support Download PDFInfo
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- CN214404399U CN214404399U CN202120479309.9U CN202120479309U CN214404399U CN 214404399 U CN214404399 U CN 214404399U CN 202120479309 U CN202120479309 U CN 202120479309U CN 214404399 U CN214404399 U CN 214404399U
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- adjustable sleeve
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- sensor support
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Abstract
A large-shaft vibration sensor support belongs to the field of support structures. The utility model aims at solving the problem that the support of the vibration of the existing turbine main shaft of the measuring turbine can not be installed on the bearing of a special structure. The vibration sensor support comprises an x-direction large-axis vibration sensor support and a y-direction large-axis vibration sensor support, wherein the x-direction large-axis vibration sensor support and the y-direction large-axis vibration sensor support are respectively arranged in the x direction and the y direction of a rotor of a steam turbine and are used for monitoring the x-direction vibration and the y-direction vibration of the rotor of the steam turbine. The clearance between the vibration sensor and the rotor large-shaft measuring surface is adjusted by adjusting the upper and lower positions of the adjustable sleeve on the x-direction large-shaft vibration sensor support and the y-direction large-shaft vibration sensor support, and the adjusted x-direction large-shaft vibration sensor support and the adjusted y-direction large-shaft vibration sensor support can monitor the x-direction vibration and the y-direction vibration of the rotor of the steam turbine. It is used for monitoring the x-direction vibration and the y-direction vibration of the rotor of the steam turbine.
Description
Technical Field
The utility model relates to a vibration sensor support belongs to the supporting structure field.
Background
In the existing part of steam turbine units, a support for measuring the vibration of a large shaft of a steam turbine is arranged on a bearing, the support is designed into an L shape, and a sensor is directly arranged on the L-shaped support, so that the design structure is simple and easy, and the processing is simple, but for the bearing with a special structure, when the fixed installation position of the vibration support is relatively far away from the measuring surface of the large shaft, and the structure of the L-shaped support cannot be lengthened, only a sensor with a longer length can be selected, but the longer the size of the sensor is, the higher the price is, and the cost performance is low; if the longest sensor is selected and the installation requirement cannot be met, the bracket can only be designed into a multi-section L-shaped bracket welding structure, so that the bracket is not attractive, difficult to process and easy to deform.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a big axle vibration sensor support now in order to solve the problem that the support of current measurement steam turbine big axle vibration can't install on special construction's bearing.
A large-axis vibration sensor support comprises an x-direction large-axis vibration sensor support and a y-direction large-axis vibration sensor support, wherein the x-direction large-axis vibration sensor support and the y-direction large-axis vibration sensor support are both arranged on the same end surface of a bearing, the axes of the x-direction large-axis vibration sensor support and the y-direction large-axis vibration sensor support form an angle of 45 degrees with the radial central line of a large axis respectively,
the x-direction large-axis vibration sensor bracket and the y-direction large-axis vibration sensor bracket both comprise an L-shaped fixing frame 1, an adjustable sleeve 2, a hexagon nut 5, 2 hexagon head bolts 8 and a dustproof cap 3,
the L-shaped fixing frame 1 comprises a horizontal flat plate and a vertical flat plate which are mutually and vertically fixed together, wherein 1 internal thread hole is arranged on the horizontal flat plate, 2U-shaped holes are arranged on the vertical flat plate,
each hexagon head bolt 8 extends into 1U-shaped hole on the vertical flat plate to fix the vertical flat plate on one end surface of the bearing, the outer circumferential surface of the adjustable sleeve 2 is provided with external threads, the adjustable sleeve 2 is screwed into the internal thread hole on the horizontal flat plate, the hexagon nut 5 is sleeved on the adjustable sleeve 2, the adjustable sleeve 2 is fastened on the horizontal flat plate through the hexagon nut 5, a gap is reserved between the bottom end of the adjustable sleeve 2 and the bearing rotor,
the dustproof cap 3 is arranged at the top end of the adjustable sleeve 2, and the top of the dustproof cap 3 is provided with a vibration sensor extension cable outlet hole.
Preferably, the inner circumferential surface of the dust cap 3 is of an internal thread structure, and the dust cap 3 is connected with the adjustable sleeve 2 through threads.
Preferably, the large-shaft vibration sensor bracket also comprises a spring washer 6 and a washer 7,
the hexagonal nut 5 is located at the upper portion of the transverse plate,
a first spring washer 6 and a first washer 7 are sleeved on the adjustable sleeve 2 between the hexagon nut 5 and the transverse flat plate.
Preferably, the large-shaft vibration sensor bracket also comprises a second spring washer 9 and a second washer 10,
and a second spring washer 9 and a second washer 10 are sleeved on the external thread of the hexagon head bolt 8.
Preferably, the large-axis vibration sensor support further comprises a vibration sensor,
the inner circumferential surface of the adjustable sleeve 2 is provided with internal threads, the vibration sensor is of an external thread structure,
the vibration sensor is screwed into the bottom of the adjustable sleeve 2 and is in threaded connection with the adjustable sleeve 2.
Preferably, the large-shaft vibration sensor support further comprises a nut 4,
the nut 4 is sleeved on the vibration sensor, and the vibration sensor is fastened at the bottom end of the adjustable sleeve 2 through the nut 4.
The utility model has the advantages that:
the device comprises an x-direction large-axis vibration sensor bracket and a y-direction large-axis vibration sensor bracket which are used for respectively detecting the vibration in the x direction and the vibration in the y direction on a bearing,
when the vibration sensor is installed, the L-shaped fixing frame is fixed on the bearing, the vibration sensor is screwed into the bottom of the adjustable sleeve from the bottom of the adjustable sleeve, and the vibration sensor is fixed by the nut. On the L type support of packing into adjustable sleeve, because adjustable telescopic external screw thread and the screw hole phase-match of L type support, through the upper and lower position of adjustment adjustable sleeve, adjustable vibration sensor with rotor staff measuring the clearance of face, this clearance specifically is how much suitable, detects through the universal meter, and concrete detection mode is: extending an extension cable connected with a vibration sensor from a dust cap to be connected with a front-end device through a connector, supplying-24V voltage to the front-end device by a TSI cabinet, measuring the voltage of the out end and the grounding end of the front-end device by a multimeter at the moment, taking the voltage as the gap voltage fed back by the vibration sensor, adjusting the gap between the vibration sensor and the large-axis measuring surface of the turbine rotor to be in direct proportion to the gap voltage fed back by the vibration sensor by adjusting the upper and lower positions of an adjustable sleeve so as to adjust the gap between the vibration sensor and the large-axis measuring surface of the turbine rotor, adjusting the gap voltage fed back by the vibration sensor to the zero voltage (-10V or-12V of the vibration sensor when the specific zero voltage value depends on the TSI brand), wherein the gap at the moment is a proper gap, locking the adjustable sleeve by a hexagon nut at the moment to complete the fixing of the position of the adjustable sleeve, this application includes dustproof cap, prevents to fall into impurity piece in the adjustable sleeve and leads to adjustable sleeve internal thread bite, or influences the accuracy that vibration sensor measured.
This application can both adjust the clearance of vibration sensor and turbine rotor's macroaxis measuring surface on the bearing of any special construction, so can install on the bearing of any structure completely, simple to operate, and this application simple structure, the outward appearance is pleasing to the eye, and the adjustable volume is great.
Drawings
FIG. 1 is a diagram of the position of 2 large-axis vibration sensor supports on bearings;
FIG. 2 is a view showing the structure of direction A in FIG. 1;
FIG. 3 is a top view of FIG. 2;
fig. 4(a) is a schematic structural view of the L-shaped fixing frame in fig. 2, fig. 4(b) is a schematic structural view of a vertical flat plate in the L-shaped fixing frame, and fig. 4(c) is a top view of a horizontal flat plate in fig. 4 (a);
FIG. 5(a) is a schematic structural diagram of an adjustable sleeve, and FIG. 5(b) is a bottom view of FIG. 5 (a);
fig. 6 is a schematic structural view of the dust cap.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 6, and the large-axis vibration sensor bracket according to the embodiment comprises an x-direction large-axis vibration sensor bracket and a y-direction large-axis vibration sensor bracket, wherein the x-direction large-axis vibration sensor bracket and the y-direction large-axis vibration sensor bracket are both arranged on the same end surface of a bearing, the axes of the x-direction large-axis vibration sensor bracket and the y-direction large-axis vibration sensor bracket respectively form an angle of 45 degrees with the radial center line of a large axis,
the x-direction large-axis vibration sensor bracket and the y-direction large-axis vibration sensor bracket both comprise an L-shaped fixing frame 1, an adjustable sleeve 2, a hexagon nut 5, 2 hexagon head bolts 8 and a dustproof cap 3,
the L-shaped fixing frame 1 comprises a horizontal flat plate and a vertical flat plate which are mutually and vertically fixed together, wherein 1 internal thread hole is arranged on the horizontal flat plate, 2U-shaped holes are arranged on the vertical flat plate,
each hexagon head bolt 8 extends into 1U-shaped hole on the vertical flat plate to fix the vertical flat plate on one end surface of the bearing, the outer circumferential surface of the adjustable sleeve 2 is provided with external threads, the adjustable sleeve 2 is screwed into the internal thread hole on the horizontal flat plate, the hexagon nut 5 is sleeved on the adjustable sleeve 2, the adjustable sleeve 2 is fastened on the horizontal flat plate through the hexagon nut 5, a gap is reserved between the bottom end of the adjustable sleeve 2 and the bearing rotor,
the dustproof cap 3 is arranged at the top end of the adjustable sleeve 2, and the top of the dustproof cap 3 is provided with a vibration sensor extension cable outlet hole.
In this embodiment, the turbine rotor is disposed at the center of the bearing, and the x-direction large-axis vibration sensor mount and the y-direction large-axis vibration sensor mount are respectively mounted in the x-direction and the y-direction of the turbine rotor, and are used for monitoring the x-direction vibration and the y-direction vibration of the rotor of the turbine. The large shaft refers to the turbine rotor, so the large shaft radial center line represents the turbine rotor radial center line.
As shown in fig. 1, the mounting positions of the x-direction large-axis vibration sensor holder and the y-direction large-axis vibration sensor holder are as follows: the axes of the x-direction large-axis vibration sensor bracket and the y-direction large-axis vibration sensor bracket form 45 degrees with the cross section of the bearing respectively, and the axes of the x-direction large-axis vibration sensor bracket and the y-direction large-axis vibration sensor bracket form 90 degrees.
The installation process of this application does:
firstly, a hexagon nut 5, a spring washer 6 and a washer 7 are screwed in from the top end of an adjustable sleeve 2, firstly, an extension cable of a vibration sensor penetrates through the bottom of the adjustable sleeve, the external thread of the vibration sensor is matched with the internal thread of the adjustable sleeve 2, the extension cable of the vibration sensor penetrates out from the top end of the adjustable sleeve 2, then the vibration sensor is screwed in the adjustable sleeve, and the vibration sensor is fixed by a nut 4 with the vibration sensor after being screwed in. The dust cap is screwed onto the top end of the adjustable sleeve 2 and tightened. The vibration sensor extension cable penetrates out of the through hole in the center of the dustproof cap, and the inner thread of the dustproof cap is matched with the outer thread of the sleeve 2.
The adjustable bearing fixing device is characterized in that an L-shaped fixing frame is fixedly arranged on a bearing through a second spring washer 9, a second washer 10 and a hexagon head bolt 8, after the fixing and tightening, an adjustable sleeve is screwed into the L-shaped fixing frame, a threaded hole (shown in figure 3) is tapped on the plane of the L-shaped fixing frame, the threaded hole is matched with the external thread of the adjustable sleeve, the distance between a vibration sensor and a large shaft measuring surface is adjusted through rotating the adjustable sleeve, after the installation voltage of the vibration sensor is adjusted according to the characteristics of the vibration sensor, the adjustable sleeve 2 is locked through tightening a hexagon nut 5, a first spring washer 6 and a first washer 7, the adjustable sleeve 2 is fixed on an L-shaped support, and the installation is completed.
The second embodiment is as follows: in this embodiment, as for the first embodiment, the inner circumferential surface of the dust cap 3 is of an internal thread structure, and the dust cap 3 is connected with the adjustable sleeve 2 through a thread.
The third concrete implementation mode: the embodiment is a large-shaft vibration sensor bracket as described in the first embodiment, the large-shaft vibration sensor bracket further comprises a first spring washer 6 and a first washer 7,
the hexagonal nut 5 is located at the upper portion of the transverse plate,
a first spring washer 6 and a first washer 7 are sleeved on the adjustable sleeve 2 between the hexagon nut 5 and the transverse flat plate.
The fourth concrete implementation mode: the embodiment is a large-shaft vibration sensor bracket described in the first embodiment, the large-shaft vibration sensor bracket further comprises a second spring washer 9 and a second washer 10,
and a second spring washer 9 and a second washer 10 are sleeved on the external thread of the hexagon head bolt 8.
The fifth concrete implementation mode: the embodiment is a large-axis vibration sensor support as described in the first embodiment, further comprising a vibration sensor,
the inner circumferential surface of the adjustable sleeve 2 is provided with internal threads, the vibration sensor is of an external thread structure,
the vibration sensor is screwed into the bottom of the adjustable sleeve 2 and is in threaded connection with the adjustable sleeve 2.
The sixth specific implementation mode: the present embodiment is the large-axis vibration sensor support described in the fifth embodiment, further including a nut 4,
the nut 4 is sleeved on the vibration sensor, and the vibration sensor is fastened at the bottom end of the adjustable sleeve 2 through the nut 4.
Claims (6)
1. A large-axis vibration sensor support is characterized by comprising an x-direction large-axis vibration sensor support and a y-direction large-axis vibration sensor support, wherein the x-direction large-axis vibration sensor support and the y-direction large-axis vibration sensor support are both arranged on the same end surface of a bearing, the axes of the x-direction large-axis vibration sensor support and the y-direction large-axis vibration sensor support form an angle of 45 degrees with the radial central line of a large axis respectively,
the x-direction large-axis vibration sensor bracket and the y-direction large-axis vibration sensor bracket respectively comprise an L-shaped fixing frame (1), an adjustable sleeve (2), a hexagon nut (5), 2 hexagon bolts (8) and a dustproof cap (3),
the L-shaped fixing frame (1) comprises a horizontal flat plate and a vertical flat plate which are vertically fixed together, wherein 1 internal thread hole is arranged on the horizontal flat plate, 2U-shaped holes are arranged on the vertical flat plate,
each hexagon head bolt (8) extends into 1U-shaped hole on the vertical flat plate to fix the vertical flat plate on one end surface of the bearing, the outer circumferential surface of the adjustable sleeve (2) is provided with external threads, the adjustable sleeve (2) is screwed into the internal thread hole on the horizontal flat plate, the hexagon nut (5) is sleeved on the adjustable sleeve (2), the adjustable sleeve (2) is fastened on the horizontal flat plate through the hexagon nut (5), a gap is reserved between the bottom end of the adjustable sleeve (2) and the bearing rotor,
the dustproof cap (3) is arranged at the top end of the adjustable sleeve (2), and the top of the dustproof cap (3) is provided with a vibration sensor extension cable outlet hole.
2. A large-axis vibration sensor support as claimed in claim 1, characterized in that the inner circumferential surface of the dust cap (3) is of an internal thread structure, and the dust cap (3) is connected with the adjustable sleeve (2) through a thread.
3. A large-axis vibration sensor holder, according to claim 1, characterized in that it further comprises a spring washer number one (6) and a washer number one (7),
the hexagonal nut (5) is positioned at the upper part of the transverse flat plate,
a first spring washer (6) and a first washer (7) are sleeved on the adjustable sleeve (2) between the hexagonal nut (5) and the transverse flat plate.
4. A macroaxis vibration sensor mount as defined in claim 1 further comprising spring washer two (9) and washer two (10),
a second spring washer (9) and a second washer (10) are sleeved on the external thread of the hexagon head bolt (8).
5. A macroaxis vibration sensor mount as claimed in claim 1 further comprising a vibration sensor,
the inner circumferential surface of the adjustable sleeve (2) is provided with internal threads, the vibration sensor is of an external thread structure,
the vibration sensor is screwed into the bottom of the adjustable sleeve (2), and the vibration sensor is connected with the adjustable sleeve (2) through threads.
6. A large-axis vibration sensor mount according to claim 5, characterized in that it further comprises a nut (4),
the nut (4) is sleeved on the vibration sensor, and the vibration sensor is fastened at the bottom end of the adjustable sleeve (2) through the nut (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120479309.9U CN214404399U (en) | 2021-03-05 | 2021-03-05 | Large-shaft vibration sensor support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120479309.9U CN214404399U (en) | 2021-03-05 | 2021-03-05 | Large-shaft vibration sensor support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214404399U true CN214404399U (en) | 2021-10-15 |
Family
ID=78027616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120479309.9U Active CN214404399U (en) | 2021-03-05 | 2021-03-05 | Large-shaft vibration sensor support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214404399U (en) |
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2021
- 2021-03-05 CN CN202120479309.9U patent/CN214404399U/en active Active
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