Support for installing steam turbine shaft rotating speed probe and steam turbine shaft rotating speed detection device

Abstract

The utility model discloses a support for installing a steam turbine shaft rotating speed probe and a steam turbine shaft rotating speed detection device, and relates to the technical field of steam turbine shaft rotating speed measurement, the support comprises a support body and a plurality of clamping pieces, the support body comprises an arc-shaped part and a connecting part, the connecting part is used for being detachably and fixedly connected with a steam turbine, and the clamping pieces are used for clamping the arc-shaped part. The arc-shaped part is used for being arranged above a gear disc of a steam turbine shaft. A plurality of clamping piece connecting positions are arranged on the arc-shaped part, the clamping pieces are used for detachably and fixedly connecting the arc-shaped part to the clamping piece connecting positions, and probe placing stations are arranged between the clamping pieces and the arc-shaped part; the probe is used for being placed in the probe placing station and can slide in the direction close to or away from the steam turbine shaft and keep the position after sliding, the structure is simple, operation is convenient, and the distance between the probe and the steam turbine shaft is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine shaft speed measurement, in particular to a bracket for installing a steam turbine shaft speed probe and a steam turbine shaft speed detection device. Background Technique

[0002] The steam turbine shaft speed is an important parameter for the normal operation of a steam turbine unit. The parameter of the steam turbine shaft speed will directly affect the technical level of the operator and the operation of the steam turbine equipment. The accurate and reliable measurement of the steam turbine speed can ensure the stability and safety of the equipment. Content of the Utility Model

[0003] The purpose of the utility model is to provide a bracket for installing a steam turbine shaft speed probe and a steam turbine shaft speed detection device to solve the problems existing in the above-mentioned prior art, with a simple structure, convenient operation, and effectively ensuring the distance between the probe and the steam turbine shaft.

[0004] To achieve the above purpose, the utility model provides the following scheme:

[0005] The utility model provides a bracket for installing a steam turbine shaft speed probe, including: a bracket body and a plurality of clamping members. The bracket body includes an arc portion and a connecting portion. The connecting portion is used for detachably and fixedly connecting with the steam turbine. The arc portion is used for being arranged above the gear disc of the steam turbine shaft; and

[0006] A plurality of clamping member connection positions are arranged on the arc portion. The clamping members are used for detachably and fixedly connecting the arc portion to the clamping member connection positions. A probe placement station is arranged between the clamping members and the arc portion. The probe is used for being placed in the probe placement station and can slide in a direction close to or away from the steam turbine shaft and maintain the position after sliding.

[0007] Preferably, the clamping member includes a clip, at least two fixing bolts and at least two fixing nuts. At least one first through hole is arranged on one side of the clip, and at least one second through hole is arranged on the other side. At least one third through hole is arranged on one side of the clamping member connection position, and at least one fourth through hole is arranged on the other side. One fixing bolt is used for passing through one first through hole and one third through hole and then being threadedly fixed with the fixing nut to fix one side of the clip to the arc portion. One fixing bolt is used for passing through one second through hole and one fourth through hole and then being threaded with the fixing nut to fix the other side of the clip to the arc portion.

[0008] Preferably, a first semi-circular groove is provided on one side of the clamping piece close to the arc portion, a second semi-circular groove is provided at a position corresponding to the arc portion and the first semi-circular groove on the arc portion, and the first semi-circular groove and the second semi-circular groove form the probe placement station.

[0009] Preferably, an internal thread matching the outer side wall of the probe is provided in the first semi-circular groove.

[0010] Preferably, the radius of the first semi-circular groove is smaller than the radius of the probe.

[0011] Preferably, the arc portion is a semi-circle.

[0012] Preferably, the number of the clamping pieces is three, and the three clamping pieces are evenly arranged on the arc portion.

[0013] The present utility model further provides a steam turbine shaft speed detection device, including: a bracket for installing a steam turbine shaft speed probe as described in any one of the above.

[0014] The present utility model has achieved the following technical effects compared with the prior art:

[0015] The present utility model provides a bracket for installing a steam turbine shaft speed probe and a steam turbine shaft speed detection device. The connecting portion of the bracket body is connected to the steam turbine so that the arc portion is located above the gear disk of the steam turbine shaft. Each probe is placed on the placement station and the distance from the steam turbine shaft is adjusted, and then the probe is locked. The structure is simple and the operation is convenient, effectively ensuring the distance between the probe and the steam turbine shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of the bracket for installing a steam turbine shaft speed probe provided by the present utility model during the installation process on a steam turbine;

[0018] Figure 2 It is a schematic structural diagram of the bracket body in the bracket for installing a steam turbine shaft speed probe provided by the present utility model;

[0019] Figure 3 It is a schematic structural diagram of the clamping piece in the bracket for installing a steam turbine shaft speed probe provided by the present utility model;

[0020] In the figure: 1. Bracket body; 2. Arc part; 3. Connection part; 4. Clamping piece; 5. Clip; 7. Probe; 8. Clamping piece connection position; 9. Third through hole; 10. Fourth through hole; 11. Second semi-circular groove; 12. First through hole; 13. Second through hole; 14. First semi-circular groove. Detailed implementation mode

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] The purpose of the present invention is to provide a bracket for installing a steam turbine shaft speed probe and a steam turbine shaft speed detection device to solve the problems existing in the above-mentioned prior art. The structure is simple, the operation is convenient, and the distance between the probe and the steam turbine shaft can be effectively guaranteed.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation modes.

[0024] Embodiment 1

[0025] This embodiment provides a bracket for installing a steam turbine shaft speed probe 7. As Figures 1 to 3 shown, it includes: a bracket body 1 and a plurality of clamping pieces 4. The bracket body 1 includes an arc part 2 and a connection part 3. The connection part 3 is used for detachably and fixedly connecting with the steam turbine. The arc part 2 is used for being arranged above the gear disk of the steam turbine shaft. A plurality of clamping piece connection positions 8 are arranged on the arc part 2. The clamping piece 4 is used for detachably and fixedly connecting the arc part 2 to the clamping piece connection position 8. A probe 7 placement station is arranged between the clamping piece 4 and the arc part 2. The probe 7 is used for being placed in the probe 7 placement station and can slide in the direction of approaching or departing from the steam turbine shaft and maintain the position after sliding. Connect the connection part 3 of the bracket body 1 with the steam turbine to make the arc part 2 located above the gear disk of the steam turbine shaft. Place each probe 7 on the placement station, adjust the distance from the steam turbine shaft, and then lock the probe 7. The structure is simple, the operation is convenient, and the distance between the probe 7 and the steam turbine shaft can be effectively guaranteed.

[0026] In a preferred solution of this embodiment, the clamping member 4 includes clamping pieces 5, at least two fixing bolts and at least two fixing nuts. One side of the clamping piece 5 is provided with at least one first through hole 12, and the other side is provided with at least one second through hole 13. One side of the clamping member connection position 8 is provided with at least one third through hole 9, and the other side is provided with at least one fourth through hole 10. A fixing bolt is used to pass through one of the first through holes 12 and one of the third through holes 9 and then be threadedly fixed with the fixing nut to fix one side of the clamping piece 5 to the arc portion 2. A fixing bolt is used to pass through one of the second through holes 13 and one of the fourth through holes 10 and then be threaded with the fixing nut to fix the other side of the clamping piece 5 to the arc portion 2. The structure is simple and convenient to use.

[0027] In a preferred solution of this embodiment, a first semi-circular arc groove 14 is provided on one side of the clamping piece 5 close to the arc portion 2, and a second semi-circular arc groove 11 is provided at a position corresponding to the first semi-circular arc groove 14 on the arc portion 2. The first semi-circular arc groove 14 and the second semi-circular arc groove 11 form the placement station for the probe 7. The structure is simple.

[0028] In a preferred solution of this embodiment, an internal thread matching the outer wall of the probe 7 is provided in the first semi-circular arc groove 14. The structure is simple, and it is convenient to adjust the distance between the probe 7 and the turbine shaft rotation by rotating the probe 7 after the probe 7 is initially clamped, so as to meet the installation technical specifications of the measuring probe 7.

[0029] In a preferred solution of this embodiment, the radius of the first semi-circular arc groove 14 is smaller than the radius of the probe 7. After the position of the probe 7 is adjusted, the clamping piece 5 can be used to clamp and fix the probe 7 by rotating the fixing nut.

[0030] In a preferred solution of this embodiment, the arc portion 2 is a semi-circular arc.

[0031] In a preferred solution of this embodiment, the number of the clamping members 4 is three, and the three clamping members 4 are evenly arranged on the arc portion 2. Multiple probes 7 contribute to accurate measurement.

[0032] Embodiment Two

[0033] The present invention also provides a turbine shaft speed detection device, including: the bracket for installing the turbine shaft speed probe 7 as described in any one of the above, and installing each probe 7 on each probe 7 placement station.

[0034] Usage process:

[0035] Fix the bracket body 1 to the turbine through bolts, thereby fixing the arc portion 2 above the gear disc of the turbine shaft.

[0036] Place the three probes 7 into the three first semi-circular grooves 14 of the bracket body 1 respectively.

[0037] Install the three clamping pieces 5 on the bracket body 1 respectively, make the probe 7 close to the gear end face, and slightly lock them with the fixing bolts and fixing nuts.

[0038] Rotate the probe 7. When the measurement distance between the probe 7 and the gear shaft disc reaches the distance required by the technical requirements, lock the fixing bolts with the fixing nuts.

[0039] The installation and debugging process is completed.

[0040] Specific examples are applied in the present utility model to expound the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A bracket for installing a turbine shaft speed probe, characterized in that: include: A bracket body, the bracket body comprising an arc-shaped portion and a connecting portion, the connecting portion being used for being detachably fixedly connected to the steam turbine, and the arc-shaped portion being used for being arranged above the gear plate of the steam turbine shaft; as well as A plurality of clamping members, a plurality of clamping member connection positions are arranged on the arc-shaped portion, the clamping members are used to removably fix the arc-shaped portion to the clamping member connection positions, a probe placement position is arranged between the clamping members and the arc-shaped portion, the probe is used to be placed in the probe placement position and can slide in a direction close to or away from the turbine shaft and maintain the position after sliding.

2. The bracket for installing a turbine shaft speed probe according to claim 1, characterized in that: The clamping member includes a clamping piece, at least two fixing bolts and at least two fixing nuts, at least one first through hole is provided on one side of the clamping piece, and at least one second through hole is provided on the other side, at least one third through hole is provided on one side of the connecting position of the clamping piece, and at least one fourth through hole is provided on the other side, one of the fixing bolts is used to pass through one of the first through holes and one of the third through holes and then be threadedly fixed with the fixing nut to fix one side of the clamping piece to the arc-shaped portion, and one of the fixing bolts is used to pass through one of the second through holes and one of the fourth through holes and then be threadedly fixed with the fixing nut to fix the other side of the clamping piece to the arc-shaped portion.

3. The bracket for installing a turbine shaft speed probe according to claim 2, characterized in that: A first semi-circular arc groove is arranged on one side of the clip close to the arc-shaped portion, a second semi-circular arc groove is arranged at a position of the arc-shaped portion corresponding to the first semi-circular arc groove, and the first semi-circular arc groove and the second semi-circular arc groove form the probe placement station.

4. The bracket for installing a turbine shaft speed probe according to claim 3 is characterized in that: An internal thread matching the outer side wall of the probe is arranged in the first semicircular arc groove.

5. The bracket for installing a turbine shaft speed probe according to claim 4, characterized in that: The radius of the first semicircular arc groove is smaller than the radius of the probe.

6. The bracket for mounting a turbine shaft speed probe according to claim 5, characterized in that: The arc-shaped portion is a semicircular arc.

7. The bracket for mounting a turbine shaft speed probe according to claim 6, characterized in that: The water volume of the clamping pieces is three, and the three clamping pieces are evenly arranged on the arc-shaped portion.

8. A steam turbine shaft speed detection device, characterized in that: include: A bracket for mounting a turbine shaft speed probe as claimed in any one of claims 1 to 7.

Images