CN210948910U - Gas turbine compressor angle transmitter combination device capable of eliminating signal jump influence - Google Patents
Gas turbine compressor angle transmitter combination device capable of eliminating signal jump influence Download PDFInfo
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- CN210948910U CN210948910U CN201921376243.XU CN201921376243U CN210948910U CN 210948910 U CN210948910 U CN 210948910U CN 201921376243 U CN201921376243 U CN 201921376243U CN 210948910 U CN210948910 U CN 210948910U
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Abstract
The utility model discloses a gas turbine compressor angle changer composite set of eliminating signal hopping influence, gas turbine's compressor include bearing frame and import rotatable stator, the bearing frame can change the axis level of stator with the import, measurement and control device is including the first angle changer that is used for detecting import rotatable stator angle, and the contained angle of first angle changer and the vertical central line of IGV is 7.2, still includes second angle changer and third angle changer, and wherein second angle changer and third angle changer use the vertical central line symmetry of IGV, and be 21.6 with the contained angle of the vertical central line of IGV. Through increasing two angle transmitters, the median is got to three angle transmitter measured value, replaces former single angle transmitter measured value, has solved the influence of angle transmitter jump, has improved the security of unit operation, further improves the precision of angle modulation, and then ensures efficiency, reliability and the stability of unit operation.
Description
Technical Field
The utility model relates to a gas power generation technical field, concretely relates to gas turbine.
Background
The combined cycle generator set of gas turbine is a circulating system composed of gas turbine, generator and waste heat boiler, steam turbine (condensing type) or heat supply type steam turbine (extracting type or back pressure type), it recycles the high temperature exhausted smoke exhausted by gas turbine after doing work through waste heat boiler and converts it into steam, which is sent to steam turbine to generate electricity, or uses part of exhausted steam after generating electricity and doing work for heat supply. The common forms include a single-shaft combined cycle in which a gas turbine and a steam turbine coaxially drive a generator, and a multi-shaft combined cycle in which the gas turbine and the steam turbine are respectively combined with the generator.
The IGV angle signal is one of important control parameters of the combustion engine, and can be controlled by adopting an angle transmitter or linear displacement, and the angle transmitter is conventionally adopted as a main control signal. The signal of the single IGV angle transmitter may jump in the operation process, and after the jump, the unit needs to take temporary measures to shield the signal and switch to linear control to ensure the unit to continue to operate. But the original design effect and basic function of the IGV angle transmitter are abandoned, and the precision of angle adjustment is possibly reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a gas turbine compressor angle changer composite set of eliminating signal jump influence is provided, solves the influence of single angle changer jump, improves the precision of angle modulation.
In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a gas turbine's compressor stator angle measurement and control device, gas turbine's compressor include the bearing frame and import rotatable stator, the axis level of bearing frame and import rotatable stator, measurement and control device is including the first angle changer that is used for detecting import rotatable stator angle, and the contained angle of first angle changer and IGV vertical center line is 7.2, still includes second angle changer and third angle changer, and wherein second angle changer and third angle changer use IGV vertical center line symmetry, and are 21.6 with the contained angle of IGV vertical center line.
Optionally, the first angle transmitter, the second angle transmitter and the third angle transmitter are all located on the lower half portion of the IGV.
Optionally, the end of giving vent to anger of bearing frame is equipped with the perpendicular flange bolt hole that is connected with the flange bolt, becomes 7.2 degrees at two adjacent perpendicular flange bolt holes of the latter half of IGV, second angle changer, third angle changer are installed respectively in an angle changer installing support, the angle changer installing support is fixed in the bearing frame through the flange bolt.
Optionally, angle transmitter installing support includes terminal surface portion and the circumference portion of being connected perpendicularly with terminal surface portion, terminal surface portion and flange bolted connection, angle transmitter installs in circumference portion.
Optionally, the circumferential portion is provided with a through hole, the angle transmitter is provided with an eccentric flange, and an inner hole of the eccentric flange coincides with the center of the through hole.
Optionally, the eccentric flange is fixed to the circumferential portion by an inner hexagonal socket head cap screw.
Optionally, the angle transmitter is provided with a connection joint, the connection joint is connected with a coupler, and the coupler is connected with the end of a connection shaft of the rocker arm corresponding to the installation positions of the second angle transmitter and the third angle transmitter.
Optionally, the end of the connecting shaft is provided with a threaded hole corresponding to the mounting positions of the second angle transmitter and the third angle transmitter, and the coupler is connected with the threaded hole.
Optionally, the IGV is provided with a ring of metal shield, and includes a protection bracket and a galvanized sheet, and the galvanized sheet is fixed to the protection bracket by bolts.
Optionally, cables of the first angle transmitter, the second angle transmitter and the third angle transmitter are led out through cable holes corresponding to the first angle transmitter after being collected.
The utility model adopts the above technical scheme, following beneficial effect has:
1. two angle transmitters are added, three measured values of the three angle transmitters are taken out (the intermediate value is taken, and the functions of dead pixel and large deviation elimination are achieved) to replace the original measured value of a single angle transmitter, so that the influence of jumping of the angle transmitters is avoided, the running safety of the unit is improved, the angle adjusting precision is further improved, and the running efficiency, reliability and stability of the unit are further ensured.
2. The switching between the linear transmitter and the IGV control logic is not changed, the logic change is small, the debugging is convenient, only two angle transmitters are added on the structure, the work load is small, the construction period is short, the technical change can be carried out in the normal regular maintenance of the unit, and the normal operation of the unit cannot be influenced.
3. According to the structure and the installation position of the original angle transmitter, the angle transmitter bracket is determined by the bolt hole position of the flange on the vertical surface of the air outlet end of the air compressor bearing seat, the bolt holes on the flange on the vertical surface of the air outlet end of the air compressor bearing seat are uniformly distributed in the upper half and the lower half, two adjacent threaded holes in the lower half form an angle of 7.2 degrees and an angle of 6.923 degrees, the connecting joint of the angle transmitter is positioned at the connecting position of the rocker arm and the guide vane, the IGV inlet guide vane is also distributed in the upper half and the lower half differently, the adjacent angles of the lower half are uniformly distributed at 7.2 degrees, staggered with bolt holes at the bearing seat of the compressor at intervals of 3.6 degrees, conforming to the hole arrangement of the original angle transmitter bracket, the upper half of the angle transmitter is 6.923 degrees at each interval angle, which is different from the interval angle of the connecting hole of the angle transmitter bracket, and angle interval precision is higher, if will increase angle changer and arrange in the first half, because field transformation, can produce great angle error to need to change the supporting structure.
4. The angle transmitter mounting bracket can be directly matched with a bolt hole of a flange on the vertical surface of the air outlet end of the compressor bearing seat through a flange bolt without a new structure, the angle transmitter is arranged on the lower half part and is arranged at the bottom of the lower half part of the IGV, so that the angle transmitter mounting bracket is convenient for field assembly and debugging and is also convenient for wiring.
5. A circle of metal shield is arranged at the IGV position for heat preservation of the gas turbine and mainly comprises a support and a galvanized plate, the metal shield at the lower half bottom of the IGV can be detached on site in order to be matched with the installation of the IGV newly-increased angle transmitter, and due to the fact that the ruler is installed at the position step of the newly-increased angle transmitter, an observation hole does not need to be added at the corresponding position.
6. Can collect back along former cable hole with three angle transmitter cables after the installation is accomplished and draw forth, it is less if former trompil, can suitably ream, notice that the metal limit need be with protection such as plastics, cable laying moves towards along former cable according to on-the-spot actual conditions.
The specific technical solution and the advantages of the present invention will be described in detail in the following detailed description with reference to the accompanying drawings.
Drawings
The invention will be further described with reference to the accompanying drawings and specific embodiments:
fig. 1 is a front view of the present invention;
FIG. 2 is a schematic view of a partial radial view of an inlet guide vane of the present invention;
FIG. 3 is a schematic sectional view taken along line A-A in FIG. 2;
FIG. 4 is a schematic view of a top threaded hole of a connecting shaft of the rocker arm at a position of the angle transducer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It is to be understood that the features of the following examples and embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "axis", "up", "down", "vertical", "horizontal", "end", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Example one
As shown in fig. 1 to 4, the gas turbine compressor angle transmitter composite set of eliminating signal jump influence, gas turbine's compressor include bearing frame 3 and import rotatable stator, the axis level of bearing frame and import rotatable stator, measurement and control device is including the first angle changer A that is used for detecting import rotatable stator angle, and the contained angle of first angle changer and the vertical central line of IGV is 7.2, still includes second angle changer B and third angle changer C, and wherein second angle changer and third angle changer use the vertical central line of IGV (through the center of bearing frame and import rotatable stator and perpendicular with the horizontal plane) symmetry, and be 21.6 with the contained angle of the vertical central line of IGV.
The utility model discloses a technical scheme, increase two angle transmitters, three angle transmitter measured value is three get in (three angle transmitter measured value gets the median, has the function that dead pixel and deviation rejected greatly) and replaces former single angle transmitter measured value, has solved the influence of angle transmitter hopping, has improved the security of unit operation, further improves the precision of angle modulation, and then ensures efficiency, reliability and the stability of unit operation. In addition, the switching between the linear transmitters and the IGV control logic is not changed, the logic change is small, the debugging is convenient, only two angle transmitters are added on the structure, the work load is small, the construction period is short, the technical improvement can be carried out in the normal regular maintenance of the unit, and the normal operation of the unit cannot be influenced.
According to the structure and the installation position of the original angle transmitter, the angle transmitter bracket is determined by the bolt hole position of the flange on the vertical surface of the air outlet end of the air compressor bearing seat 3, the bolt holes on the flange on the vertical surface of the air outlet end of the air compressor bearing seat are uniformly distributed in the upper half and the lower half, two adjacent threaded holes in the lower half form an angle of 7.2 degrees and an angle of 6.923 degrees, the connecting joint of the angle transmitter is positioned at the connecting position of the rocker arm and the guide vane, the IGV inlet guide vane is also distributed in the upper half and the lower half differently, the adjacent angles of the lower half are uniformly distributed at 7.2 degrees, staggered with bolt holes at the bearing seat of the compressor at intervals of 3.6 degrees, conforming to the hole arrangement of the original angle transmitter bracket, the upper half of the angle transmitter is 6.923 degrees at each interval angle, which is different from the interval angle of the connecting hole of the angle transmitter bracket, and angle interval precision is higher, if will increase angle changer and arrange in the first half, because field transformation, can produce great angle error to need to change the supporting structure. Therefore, the first angle transmitter, the second angle transmitter and the third angle transmitter are all located at the lower half part of the IGV. The angle transmitter is arranged on the lower half part and is arranged at the bottom of the lower half part of the IGV, so that the field assembly and debugging are facilitated, and the wiring is also facilitated.
Referring to fig. 2 to 4, the newly added angle transmitters 1 (i.e., the second angle transmitter and the third angle transmitter) are respectively mounted to an angle transmitter mounting bracket 10, similar to the prior art. In order not to add additional structure, the angle transmitter mounting bracket 10 is fixed by flange bolts 31. The angle transmitter mounting bracket 10 includes an end surface portion 101 and a circumferential portion 102 perpendicularly connected to the end surface portion, the end surface portion 101 is connected to the flange bolt 31, and the angle transmitter is mounted to the circumferential portion 102. The circumference portion 102 is provided with a through hole, the angle transmitter is provided with an eccentric flange 11, an inner hole of the eccentric flange coincides with the center of the through hole, and the eccentric flange is fixed with the circumference portion through an inner hexagonal socket head cap screw.
The two newly-increased angle transmitter structures are basically consistent with the original angle transmitter structure, and the newly-increased angle transmitter does not need to be provided with a scale and a pointer. In order to be matched with the installation of the angle transmitter, a threaded hole needs to be formed in the top of the connecting shaft of the rocker arm at the position where the angle transmitter is correspondingly added. Wherein, angle transmitter 1 is equipped with attach fitting 12, attach fitting 12 is connected with shaft coupling 22, and the screw hole 211 is seted up at connecting axle 21 top to rocking arm 2 that corresponds second angle transmitter, third angle transmitter mounted position, shaft coupling 22 is connected with screw hole 211, drives attach fitting 12, shaft coupling 22, connecting axle 21 by rocking arm 2 and rotates simultaneously.
A circle of metal shield is arranged at the IGV position for heat preservation of the gas turbine and comprises a protection bracket and a galvanized plate, and the galvanized plate is fixed on the protection bracket through bolts. In order to match the installation of two newly-increased angle transmitters of the IGV, the metal shield at the lower half bottom of the IGV needs to be dismantled on site. Because the angle transmitter is newly added with the position step installation scale, an observation hole does not need to be added corresponding to the position.
Because the originally arranged first angle transmitter is designed with cable routing, the cable laying can be along the original cable direction according to the actual situation of the site. Specifically, the cables of the first angle transmitter, the second angle transmitter and the third angle transmitter are led out through cable holes corresponding to the first angle transmitter after being collected. Of course, if the original opening is small, the hole can be expanded properly, and the metal edge needs to be protected by plastic and the like.
Example two
A gas turbine comprises the gas turbine compressor angle transmitter combination device for eliminating the signal jump influence.
The gas turbine comprises the gas turbine compressor angle transmitter combination device for eliminating the signal jump influence, the gas turbine compressor angle transmitter combination device is the same as the prior art, the gas turbine compressor angle transmitter combination device is still controlled by adopting the angle transmitter or linear displacement, of course, signals of three angle transmitters are conventionally adopted for control, and the measured values of the three angle transmitters are intermediate values.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the above specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (10)
1. Eliminate gas turbine compressor angle changer composite set of signal jump influence, gas turbine's compressor include bearing frame and the import but the stator that changes, the axis level of bearing frame and the import but the stator that changes, composite set is including the first angle changer that is used for detecting the import but the stator angle that changes, and the contained angle of first angle changer and IGV vertical center line is 7.2, its characterized in that, still includes second angle changer and third angle changer, and wherein second angle changer and third angle changer use IGV vertical center line symmetry, and are 21.6 with the contained angle of IGV vertical center line.
2. The gas turbine compressor angle transmitter assembly of claim 1 that eliminates the effects of signal jumps, wherein: and the first angle transmitter, the second angle transmitter and the third angle transmitter are all positioned on the lower half part of the IGV.
3. The gas turbine compressor angle transmitter assembly of claim 2 that eliminates the effects of signal jumps, wherein: the end of giving vent to anger of bearing frame is equipped with the perpendicular flange bolt hole that is connected with the flange bolt, becomes 7.2 degrees at two adjacent perpendicular flange bolt holes of the latter half of IGV, second angle changer, third angle changer are installed respectively in an angle changer installing support, the angle changer installing support passes through flange bolt fixed.
4. The gas turbine compressor angle transmitter assembly of claim 3 that eliminates the effects of signal jumps, wherein: the angle transmitter installing support comprises an end face portion and a circumferential portion perpendicularly connected with the end face portion, the end face portion is connected with the flange bolts, and the angle transmitter is installed in the circumferential portion.
5. The gas turbine compressor angle transmitter assembly of claim 4 that eliminates the effects of signal jumps, wherein: the circumference portion is equipped with the through-hole, the angle changer is equipped with eccentric flange, eccentric flange's hole and the center coincidence of through-hole.
6. The gas turbine compressor angle transmitter assembly of claim 5 that eliminates the effects of signal jumps, wherein: the eccentric flange is fixed with the circumferential part through an inner hexagonal socket head cap screw.
7. The gas turbine compressor angle transmitter assembly of claim 5 that eliminates the effects of signal jumps, wherein: the angle transmitter is provided with a connecting joint, the connecting joint is connected with a coupler, and the coupler is connected with the end part of a connecting shaft of the rocker arm corresponding to the installation positions of the second angle transmitter and the third angle transmitter.
8. The gas turbine compressor angle transmitter assembly of claim 7 that eliminates the effects of signal jumps, wherein: and the end part of the connecting shaft is provided with a threaded hole corresponding to the installation positions of the second angle transmitter and the third angle transmitter, and the coupler is connected with the threaded hole.
9. The gas turbine compressor angle transmitter assembly of claim 1 that eliminates the effects of signal jumps, wherein: the IGV is provided with a circle of metal shield and comprises a protective bracket and a galvanized plate, and the galvanized plate is fixed on the protective bracket through bolts.
10. The gas turbine compressor angle transmitter assembly of claim 1 that eliminates the effects of signal jumps, wherein: cables of the first angle transmitter, the second angle transmitter and the third angle transmitter are led out through cable holes arranged corresponding to the first angle transmitter after being collected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921376243.XU CN210948910U (en) | 2019-08-23 | 2019-08-23 | Gas turbine compressor angle transmitter combination device capable of eliminating signal jump influence |
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| CN201921376243.XU CN210948910U (en) | 2019-08-23 | 2019-08-23 | Gas turbine compressor angle transmitter combination device capable of eliminating signal jump influence |
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| CN210948910U true CN210948910U (en) | 2020-07-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594023A (en) * | 2019-08-23 | 2019-12-20 | 浙江浙能长兴天然气热电有限公司 | Gas compressor guide vane angle measurement and control device, gas turbine and control method |
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2019
- 2019-08-23 CN CN201921376243.XU patent/CN210948910U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594023A (en) * | 2019-08-23 | 2019-12-20 | 浙江浙能长兴天然气热电有限公司 | Gas compressor guide vane angle measurement and control device, gas turbine and control method |
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