CN219178906U

CN219178906U - Generator side shaft vibration sensor support

Info

Publication number: CN219178906U
Application number: CN202222557223.0U
Authority: CN
Inventors: 李晓健
Original assignee: Shenyang Geward Environmental Protection Technology Co ltd
Current assignee: Shenyang Geward Environmental Protection Technology Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-06-13
Anticipated expiration: 2032-09-26

Abstract

The utility model relates to the technical field of brackets, and discloses a generator side shaft vibration sensor bracket which comprises an insulating seat, a conversion sleeve and a shaft vibration sensor, wherein the insulating seat comprises a cylinder and a circular ring, the circular ring is fixed with the top end of the cylinder, an internal thread annular shell is embedded at the bottom edge of the circular ring, an external thread ring is connected with the internal side thread of the internal thread annular shell, a fixing ring is embedded at the top of the circular ring, a first external thread connecting ring is fixed at the top of the fixing ring, and the conversion sleeve is inserted at the top end of the insulating seat. The support for the side shaft vibration sensor of the generator can ensure insulation between the side shaft vibration sensor and the bearing bush of the generator, avoid electromagnetic interference of the generator end, have shorter length, effectively avoid resonance of the support, and have certain adjustability.

Description

Generator side shaft vibration sensor support

Technical Field

The utility model relates to the technical field of brackets, in particular to a side shaft vibration sensor bracket of a generator.

Background

For the 660MW turbo generator set, the No. 9 bearing is a generator side current collection small shaft stable bearing, because of the three supporting structures of the generator rotor and the current collection small shaft, and the characteristics of relatively lighter, thinner and longer current collection small shaft, the current collection small shaft journal is sensitive to unbalanced response of a shaft system, the shaking degree is extremely likely to be large, larger shaft vibration is easy to occur at the No. 9 bearing at the moment, in addition, because the generator is hydrogen-cooled, the space available for installing the shaft vibration bracket at the generator side is very limited, the shaft vibration bracket of the No. 9 bearing of the generator set is installed at the upper cover of a bearing box, and the installation interface of the shaft vibration bracket is far away from the rotor measuring surface, resonance is easy to occur because the shaft vibration bracket is longer, and the machine set is easy to jump due to the excessive shaft vibration.

Disclosure of Invention

The utility model aims to provide a generator side shaft vibration sensor bracket which solves the problems in the background technology.

The embodiment of the application adopts the following technical scheme:

the utility model provides a generator side axle sensor support that shakes, including the insulating seat, the conversion sleeve, the axle sensor that shakes, the insulating seat includes drum and ring, the ring is fixed with the top of drum, the bottom edge of ring is inlayed and is had the internal thread annular shell, the inboard threaded connection of internal thread annular shell has the external screw thread ring, the top of ring is inlayed and is had the solid fixed ring, the top of solid fixed ring is fixed with first external screw thread link, the conversion sleeve is pegged graft on the top of insulating seat, the outside upper end of conversion sleeve is fixed with first internal screw thread connection cover, the inboard of first internal screw thread connection cover and the outside threaded connection of first external screw thread link, the lower part of axle sensor that shakes is fixed with second internal screw thread connection cover, the bottom of conversion sleeve is fixed with second external screw thread link, the inboard of second internal screw thread connection cover and the outside threaded connection of second external screw thread connection ring.

Preferably, the insulating seat, the external thread ring, the conversion sleeve, the internal thread annular shell, the fixing ring, the first external thread connecting ring, the first internal thread connecting cover, the second internal thread connecting cover and the second external thread connecting ring are all coaxially arranged.

Preferably, the insulating base is made of a phenolic laminated cloth plate.

Preferably, the materials of the conversion sleeve, the first external threaded connecting ring, the first internal threaded connecting cover, the second internal threaded connecting cover and the second external threaded connecting ring are all QA carbon steel.

The above-mentioned at least one technical scheme that this application embodiment adopted can reach following beneficial effect:

firstly, when the device is used, the insulating seat is inserted into the mounting hole on the bearing bush, the insulating seat is fixed through the threaded connection between the internal threaded annular shell on the insulating seat and the external threaded ring on the bearing bush, the shaft vibration sensor is in threaded connection with the second external threaded connection ring at the bottom of the conversion sleeve through the second internal threaded connection cover, and the conversion sleeve is inserted into the inner side of the insulating seat, so that the lower part of the shaft vibration sensor faces the generator rotor, the gap voltage of the shaft vibration sensor is measured, the conversion sleeve is screwed, the first internal threaded connection cover is in threaded connection with the first external threaded connection ring on the insulating seat, the rotation of the conversion sleeve is stopped by measuring a proper voltage value, the device can ensure the insulation between the shaft vibration sensor and the bearing bush of the generator, the electromagnetic interference at the end of the generator is avoided, the length is relatively short, the device can effectively avoid the device, and meanwhile, compared with the shaft vibration device which is originally arranged at the upper cover of the bearing box, the problem that the shaft vibration value at the bearing is often large and the shaft vibration value is easy to transversely and is solved effectively.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 is a schematic view of a front view partially in cross section;

FIG. 2 is a schematic diagram of a front sectional structure of an insulating base according to the present utility model;

FIG. 3 is a schematic cross-sectional front view of a second female threaded connection housing of the present utility model;

fig. 4 is a schematic view of the front view of the conversion sleeve according to the present utility model.

In the figure: 1. an insulating base; 101. a cylinder; 102. a circular ring; 2. an external threaded ring; 3. a transition sleeve; 4. a shaft vibration sensor; 5. an internally threaded annular shell; 6. a fixing ring; 7. a first externally threaded connecting ring; 8. a first internally threaded connection cap; 9. a second internally threaded connection cap; 10. a second externally threaded connecting ring; 11. bearing bush; 111. a mounting hole; 12. a generator rotor.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.

Referring to fig. 1, 2, 3 and 4, a generator side shaft vibration sensor mount; the device comprises an insulating seat 1, a conversion sleeve 3 and a shaft vibration sensor 4, wherein the insulating seat 1 comprises a cylinder 101 and a circular ring 102, the circular ring 102 is fixed with the top end of the cylinder 101, an inner thread annular shell 5 is embedded at the edge of the bottom of the circular ring 102, an outer thread ring 2 is connected with the inner side of the inner thread annular shell 5 in a threaded manner, a fixing ring 6 is embedded at the top of the circular ring 102, a first outer thread connecting ring 7 is fixed at the top of the fixing ring 6, the conversion sleeve 3 is inserted at the top end of the insulating seat 1, a first inner thread connecting cover 8 is fixed at the upper end of the outer side of the conversion sleeve 3, the inner side of the first inner thread connecting cover 8 is in threaded connection with the outer side of the first outer thread connecting ring 7, a second inner thread connecting cover 9 is fixed at the lower part of the shaft vibration sensor 4, and a second outer thread connecting ring 10 is fixed at the bottom of the conversion sleeve 3, and the inner side of the second inner thread connecting cover 9 is in threaded connection with the outer side of the second outer thread connecting ring 10;

the insulation seat 1, the external thread ring 2, the conversion sleeve 3, the internal thread annular shell 5, the fixed ring 6, the first external thread connecting ring 7, the first internal thread connecting cover 8, the second internal thread connecting cover 9 and the second external thread connecting ring 10 are all coaxially arranged, the insulation seat 1 is inserted into a mounting hole 111 on the bearing bush 11, the external thread ring 2 is fixed on the bearing bush 11, and the lower part of the shaft vibration sensor 4 faces the generator rotor 12;

the insulating seat 1 is made of a phenolic aldehyde laminated cloth plate;

the material of the conversion sleeve 3, the first external thread connecting ring 7, the first internal thread connecting cover 8, the second internal thread connecting cover 9 and the second external thread connecting ring 10 is Q235A carbon steel.

When the device is used, the insulating seat 1 is inserted into the mounting hole 111 on the bearing bush 11, the insulating seat 1 is fixed by the threaded connection between the inner threaded annular shell 5 on the insulating seat 1 and the outer threaded ring 2 on the bearing bush 11, the shaft vibration sensor 4 is in threaded connection with the second outer threaded connection ring 10 at the bottom of the conversion sleeve 3 through the second inner threaded connection cover 9, the conversion sleeve 3 is inserted into the inner side of the insulating seat 1, the lower part of the shaft vibration sensor 4 faces the generator rotor 12, the gap voltage of the shaft vibration sensor 4 is measured, the conversion sleeve 3 is screwed, the first outer threaded connection ring 7 on the insulating seat 1 is in threaded connection with the first inner threaded connection cover 8, and the rotation of the conversion sleeve 3 is stopped when a proper voltage value is measured.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims

1. The utility model provides a generator side axle sensor support that shakes, including insulating seat (1), adapter sleeve (3), axle sensor (4) shakes, a serial communication port, insulating seat (1) is including drum (101) and ring (102), the top of ring (102) and drum (101) is fixed, the bottom edge of ring (102) is inlayed and is had internal thread annular shell (5), the inboard threaded connection of internal thread annular shell (5) has outer screwed ring (2), the top of ring (102) is inlayed and is had solid fixed ring (6), the top of solid fixed ring (6) is fixed with first outer screwed ring (7), adapter sleeve (3) are pegged graft on the top of insulating seat (1), the outside upper end of adapter sleeve (3) is fixed with first inner screwed connection cover (8), the inboard of first inner screwed connection cover (8) and the outside threaded connection of first outer screwed connection ring (7), the lower part of axle sensor (4) is fixed with second inner screwed connection cover (9), the bottom of adapter sleeve (3) is fixed with second outer screwed connection ring (10), the outside threaded connection of second screwed connection (10).

2. The generator-side shaft vibration sensor holder according to claim 1, characterized in that the insulating holder (1), the externally threaded ring (2), the conversion sleeve (3), the internally threaded annular shell (5), the fixing ring (6), the first externally threaded connecting ring (7), the first internally threaded connecting cap (8), the second internally threaded connecting cap (9) and the second externally threaded connecting ring (10) are all coaxially arranged.

3. Generator-side shaft vibration sensor holder according to claim 1, characterized in that the material of the insulating base (1) is a phenolic laminated cloth plate.

4. The generator-side shaft vibration sensor holder according to claim 1, characterized in that the material of the conversion sleeve (3), the first externally threaded connection ring (7), the first internally threaded connection cap (8), the second internally threaded connection cap (9) and the second externally threaded connection ring (10) is Q235A carbon steel.