CN114483418A - Device and method for verifying yield spring stiffness coefficient of speed regulator of hydroelectric generating set - Google Patents
Device and method for verifying yield spring stiffness coefficient of speed regulator of hydroelectric generating set Download PDFInfo
- Publication number
- CN114483418A CN114483418A CN202210044408.3A CN202210044408A CN114483418A CN 114483418 A CN114483418 A CN 114483418A CN 202210044408 A CN202210044408 A CN 202210044408A CN 114483418 A CN114483418 A CN 114483418A
- Authority
- CN
- China
- Prior art keywords
- spring
- inner support
- stiffness coefficient
- yield
- speed regulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Control Of Water Turbines (AREA)
Abstract
A device and a method for calibrating the stiffness coefficient of a yield spring of a speed regulator of a hydroelectric generating set comprise a Hough section, an inner support and an outer support, wherein the Hough section is connected with the inner support, the outer support is connected with a horizontal lever, a displacement sensor and a stress application bolt are arranged on the outer support, and a weight sensor is arranged between the inner support and the stress application bolt. The half joint is used for being arranged on the outer wall of the yielding mechanism, and the horizontal lever is used for being connected with a spring pull rod of the yielding mechanism. The invention can realize the measurement of the stiffness coefficient of the spring under the condition of not disassembling the yield mechanism and the feedback spring, and solves the problems that the traditional method has high difficulty in disassembling and assembling the spring, the spring is likely to pop out to hurt people when being disassembled due to being in a compressed state originally, the inspection time of the spring is long, the maintenance period is influenced, and the like.
Description
Technical Field
The invention belongs to the technical field of calibration of stiffness coefficients of yield springs of speed regulators of hydroelectric generating sets, and particularly relates to a device and a method for calibrating the stiffness coefficients of the yield springs of the speed regulators of the hydroelectric generating sets.
Background
A speed regulator of a hydroelectric generating set of a hydropower station is a mechanical feedback speed regulator, a feedback spring arranged in a yield mechanism is an important component for feedback of the speed regulator, and the stiffness coefficient of the speed regulator needs to be periodically measured so as to prevent the active load fluctuation of the generating set caused by the phenomenon of softening. The measurement mode adopted at present is to detach the test piece and send the test piece to a professional calibration stand for measurement.
This measurement method has the following disadvantages: 1. the difficulty of disassembling and assembling the spring is high. 2. The spring may pop out to hurt a person when being removed because the spring is originally in a compressed state. 3. The time for inspecting the spring is long, and the overhaul period is influenced.
Disclosure of Invention
In view of the technical problems in the background art, the device and the method for verifying the stiffness coefficient of the yield spring of the speed regulator of the hydroelectric generating set can realize the measurement of the stiffness coefficient of the spring under the condition of not disassembling the yield mechanism and the feedback spring, and solve the problems that the traditional method is high in difficulty in disassembling and assembling the spring, people are injured due to the fact that the spring is likely to pop up when being disassembled and the time for inspecting the spring is long, so that the maintenance period is influenced, and the like.
In order to solve the technical problems, the invention adopts the following technical scheme to realize:
a calibrating device for stiffness coefficient of yield spring of a speed regulator of a hydroelectric generating set comprises a Hough section, an inner support and an outer support, wherein the Hough section is connected with the inner support, the outer support is connected with a horizontal lever, a displacement sensor and a stress application bolt are arranged on the outer support, and a weight sensor is arranged between the inner support and the stress application bolt.
In a preferable scheme, the half joint is arranged on the outer wall of the yielding mechanism, and the horizontal lever is connected with a spring pull rod of the yielding mechanism.
In a preferred scheme, the outer support comprises a lever connecting frame, the lever connecting frame is detachably connected with the horizontal lever, the lever connecting frame is connected with the outer support rod, an outer support plate is arranged at the bottom of the outer support rod, and a stress application bolt and a displacement sensor are arranged on the outer support plate.
In a preferable scheme, the inner support comprises an inner support rod, the top of the inner support rod is connected with a half joint, the bottom of the inner support rod is connected with an inner support plate, a weight sensor is arranged between the inner support plate and an outer support plate and positioned at the bottom of the inner support plate, and acting force generated by the stressing bolt is transmitted to the inner support plate through the weight sensor; the inner supporting plate is provided with a measured plate, and the displacement sensor is used for monitoring the displacement of the measured plate.
In the preferable scheme, the stressing bolt is in threaded fit with the outer support plate; the lever connecting frame is provided with a through hole, and the inner supporting rod penetrates through the through hole.
In a preferred scheme, the lever connecting frame is a T-shaped frame, and two ends of the T-shaped frame are used for being hung on the horizontal lever.
In a preferred scheme, the horizontal lever comprises two plates which are arranged in parallel, and a row of mounting holes are formed in the plates.
In a preferable scheme, the verification method of the verification device for the stiffness coefficient of the yield spring of the hydro-turbo generator set speed regulator comprises the following steps:
s1: installing a half joint on the outer wall of the yield mechanism;
s2: connecting the horizontal lever with a spring pull rod of the yielding mechanism;
s3: erecting a lever connecting frame on a horizontal lever, and mounting an inner supporting rod and an outer supporting rod in a penetrating manner to complete the assembly of the inner bracket and the outer bracket;
s4: the inner support is pressed by the stressing bolt, the weight sensor is used for measuring the pressure change value F, when the stressing bolt rotates, the inner support is fixed, the outer support is driven to move by the reverse acting force of the stressing bolt, the outer support drives the horizontal lever and the spring pull rod of the yield mechanism to move, and the displacement sensor is used for measuring the displacement change value of the measured plate, so that the displacement change value X of the spring pull rod is measured;
s5: and calculating the stiffness coefficient of the spring by using the stiffness coefficient calculation formula K = Δ F/X.
This patent can reach following beneficial effect:
in the prior art, a yield mechanism feedback spring of a speed regulator of a hydroelectric generating set is a core component of the speed regulator feedback mechanism, and the balance in the lever adjusting process is maintained through a certain compression pretightening force; in the running process of the unit, the phenomenon of unit active overshoot caused by the deflection of the feedback spring appears for many times; therefore, it is necessary to measure the stiffness coefficient (K value) of the feedback spring, grasp the current situation, and make a reasonable maintenance or replacement plan to prevent the adverse effect on the unit caused by the smaller stiffness coefficient; the prior detection means is to integrally disassemble the yield mechanism, take out the spring and send the spring to the calibration stand for measurement, and the disassembly and assembly process is complex and the workload is large. Aiming at the problems, the invention can realize the measurement of the stiffness coefficient of the spring under the condition of not disassembling the yield mechanism and the feedback spring, and solves the problems that the traditional method has high difficulty in disassembling and assembling the spring, the spring is likely to pop out to hurt people when being disassembled and is originally in a compressed state, the time for inspecting the spring is long, the maintenance period is influenced, and the like. In addition, the device is small and portable, is convenient to install, and greatly shortens the measuring time of the stiffness coefficient of the spring.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a three-dimensional block diagram of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a right side view of the present invention;
FIG. 4 is a top view of the present invention.
In the figure: yield mechanism 1, horizontal lever 2, half joint 3, outer support 4, lever link 41, nut 42, outer support rod 43, outer support plate 44, inner support 5, inner support rod 51, inner support plate 52, measured plate 53, stressing bolt 6, displacement sensor 7 and weight sensor 8.
Detailed Description
The preferable scheme is as shown in fig. 1 to 4, the calibrating device for the stiffness coefficient of the yield spring of the speed regulator of the hydro-turbo generator set comprises a half joint 3, an inner support 5 and an outer support 4, wherein the half joint 3 is connected with the inner support 5, the outer support 4 is connected with a horizontal lever 2, a displacement sensor 7 and a stress application bolt 6 are installed on the outer support 4, and a weight sensor 8 is arranged between the inner support 5 and the stress application bolt 6.
When the device is used, the half joint 3 is arranged on the outer wall of the yielding mechanism 1, and the horizontal lever 2 is connected with a spring pull rod of the yielding mechanism 1. The horizontal lever 2 comprises two parallel plates, and a row of mounting holes are formed in the plates. The two parallel plates can be welded and fixed by adopting connecting rods or fixed by bolts, and any connecting piece can be omitted.
In this embodiment, the outer bracket 4 includes a lever connecting bracket 41, the lever connecting bracket 41 is detachably connected to the horizontal lever 2, the lever connecting bracket 41 is connected to an outer supporting rod 43, an outer supporting plate 44 is disposed at the bottom of the outer supporting rod 43, and a force applying bolt 6 and a displacement sensor 7 are disposed on the outer supporting plate 44. The displacement sensor 7 on the outer supporting plate 44 can be fixed for a long time through a fixing piece, so that the installation time during use can be saved; the stressing bolt 6 is in threaded fit with the outer support plate 44, and the stressing bolt 6 is not completely detached from the outer support plate 44.
The lever connecting frame 41 needs to be detached and installed when used every time, so that the T-shaped frame is designed to be hung with the horizontal lever 2, and the installation is convenient. The top of the outer support rod 43 is provided with an external thread which is connected with the nut 42. The outer support plate 44 is connected with the outer support rod 43 by screw thread,
the inner support 5 comprises an inner support rod 51, the top of the inner support rod 51 is connected with the half joint 3, the bottom of the inner support rod 51 is connected with an inner support plate 52, a weight sensor 8 is arranged between the inner support plate 52 and the outer support plate 44, the weight sensor 8 is positioned at the bottom of the inner support plate 52, and the acting force generated by the stressing bolt 6 is transmitted to the inner support plate 52 through the weight sensor 8; the inner support plate 52 is provided with a measured plate 53, and the displacement sensor 7 is used for monitoring the displacement of the measured plate 53. In order to save the time of each operation, the weight sensor 8 is installed at the bottom of the inner support plate 52 for a long time by a fixing member; the board to be measured 53 is welded to the inner support plate 52.
The lever connecting frame 41 is provided with a through hole, and the inner support rod 51 passes through the through hole. The lever connecting frame 41 is a T-shaped frame, and two ends of the T-shaped frame are used for being hung on the horizontal lever 2. When the inner support rod 51 is fixed, the position of the T-shaped frame cannot move, and the inner support rod 51 can serve as a positioning rod, so that the whole device cannot deviate.
Preferably, the method for verifying the yield spring stiffness coefficient verifying device of the hydro-turbo generator set speed regulator comprises the following steps:
s1: installing a half joint 3 on the outer wall of the yield mechanism 1;
s2: connecting the horizontal lever 2 with a spring pull rod of the yield mechanism 1;
s3: erecting the lever connecting frame 41 on the horizontal lever 2, and penetrating and installing the inner supporting rod 51 and the outer supporting rod 43 to complete the assembly of the inner bracket 5 and the outer bracket 4;
s4: the inner support 5 is pressed by the stressing bolt 6, the weight sensor 8 is used for measuring the pressure change value of the spring pull rod, when the stressing bolt 6 rotates, the inner support 5 is fixed, the outer support 4 is driven by the reverse acting force of the stressing bolt 6 to move, the outer support 4 drives the horizontal lever 2 and the spring pull rod of the yield mechanism 1 to move, and the displacement sensor 7 is used for measuring the displacement change value of the measured plate 53, so that the displacement change value of the spring pull rod is measured;
s5: and calculating the stiffness coefficient of the spring by using the stiffness coefficient calculation formula K = Δ F/X.
In the assembling process of the verification device for the stiffness coefficient of the yield spring of the hydro-turbo generator set speed regulator, the horizontal lever 2 has different structures and slightly different installation methods, for example, in the steps S2-S3, if the horizontal lever 2 is two independent plates, after the inner support 5 and the outer support 4 are installed and connected with the half joint 3, the horizontal lever 2 and the spring pull rod of the yield mechanism 1 are fixed, so that the installation difficulty can be reduced.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (8)
1. The utility model provides a hydroelectric set speed regulator yield spring stiffness coefficient calibration equipment which characterized in that: the device comprises a half joint (3), an inner support (5) and an outer support (4), wherein the half joint (3) is connected with the inner support (5), the outer support (4) is connected with a horizontal lever (2), a displacement sensor (7) and a stress application bolt (6) are installed on the outer support (4), and a weight sensor (8) is arranged between the inner support (5) and the stress application bolt (6).
2. The device for verifying the stiffness coefficient of the yield spring of the hydro-turbo generator set speed regulator according to claim 1, wherein: the half joint (3) is arranged on the outer wall of the yielding mechanism (1), and the horizontal lever (2) is connected with a spring pull rod of the yielding mechanism (1).
3. The device for verifying the stiffness coefficient of the yield spring of the hydro-turbo generator set speed regulator according to claim 2, wherein: the outer support (4) comprises a lever connecting frame (41), the lever connecting frame (41) is detachably connected with the horizontal lever (2), the lever connecting frame (41) is connected with an outer support rod (43), an outer support plate (44) is arranged at the bottom of the outer support rod (43), and a stress application bolt (6) and a displacement sensor (7) are arranged on the outer support plate (44).
4. The device for verifying the stiffness coefficient of the yield spring of the hydro-turbo generator set speed regulator according to claim 3, wherein: the inner support (5) comprises an inner support rod (51), the top of the inner support rod (51) is connected with the half joint (3), the bottom of the inner support rod (51) is connected with an inner support plate (52), a weight sensor (8) is arranged between the inner support plate (52) and an outer support plate (44), the weight sensor (8) is positioned at the bottom of the inner support plate (52), and acting force generated by the stressing bolt (6) is transmitted to the inner support plate (52) through the weight sensor (8); the inner supporting plate (52) is provided with a measured plate (53), and the displacement sensor (7) is used for monitoring the displacement of the measured plate (53).
5. The device for verifying the stiffness coefficient of the yield spring of the hydro-turbo generator set speed regulator according to claim 4, wherein: the stressing bolt (6) is in threaded fit with the outer support plate (44); the lever connecting frame (41) is provided with a through hole, and the inner supporting rod (51) passes through the through hole.
6. The device for verifying the stiffness coefficient of the yield spring of the hydro-turbo generator set speed regulator according to claim 5, wherein: the lever connecting frame (41) is a T-shaped frame, and two ends of the T-shaped frame are used for being hung on the horizontal lever (2).
7. The device for verifying the stiffness coefficient of the yield spring of the speed regulator of the hydroelectric generating set according to claim 3, wherein: the horizontal lever (2) comprises two parallel plates, and a row of mounting holes are formed in the plates.
8. The verification method of the yield spring stiffness coefficient verification device of the hydro-turbo generator set speed regulator according to any one of claims 1 to 7, characterized by comprising the following steps of:
s1: installing a half joint (3) on the outer wall of the yield mechanism (1);
s2: connecting the horizontal lever (2) with a spring pull rod of the yielding mechanism (1);
s3: erecting a lever connecting frame (41) on a horizontal lever (2), and penetrating and installing an inner supporting rod (51) and an outer supporting rod (43) to finish the assembly of an inner bracket (5) and an outer bracket (4);
s4: the inner support (5) is pressed by the stressing bolt (6), the weight sensor (8) is used for measuring the pressure change value F, when the stressing bolt (6) rotates, the position of the inner support (5) is fixed, the external support (4) is driven by the reverse acting force of the stressing bolt (6) to move, the external support (4) drives the horizontal lever (2) and the spring pull rod of the yield mechanism (1) to move, and the displacement sensor (7) is used for measuring the displacement change value of the measured plate (53), so that the displacement change value X of the spring pull rod is measured;
s5: and calculating the stiffness coefficient of the spring by using the stiffness coefficient calculation formula K = Δ F/X.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310455944.7A CN116398353A (en) | 2022-01-14 | 2022-01-14 | Method for verifying stiffness coefficient of yield spring of speed regulator of hydroelectric generating set |
| CN202210044408.3A CN114483418B (en) | 2022-01-14 | 2022-01-14 | Device and method for verifying stiffness coefficient of yield spring of speed regulator of hydroelectric generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210044408.3A CN114483418B (en) | 2022-01-14 | 2022-01-14 | Device and method for verifying stiffness coefficient of yield spring of speed regulator of hydroelectric generating set |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310455944.7A Division CN116398353A (en) | 2022-01-14 | 2022-01-14 | Method for verifying stiffness coefficient of yield spring of speed regulator of hydroelectric generating set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114483418A true CN114483418A (en) | 2022-05-13 |
| CN114483418B CN114483418B (en) | 2023-06-13 |
Family
ID=81511235
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310455944.7A Pending CN116398353A (en) | 2022-01-14 | 2022-01-14 | Method for verifying stiffness coefficient of yield spring of speed regulator of hydroelectric generating set |
| CN202210044408.3A Active CN114483418B (en) | 2022-01-14 | 2022-01-14 | Device and method for verifying stiffness coefficient of yield spring of speed regulator of hydroelectric generating set |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310455944.7A Pending CN116398353A (en) | 2022-01-14 | 2022-01-14 | Method for verifying stiffness coefficient of yield spring of speed regulator of hydroelectric generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN116398353A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915197A (en) * | 2010-09-07 | 2010-12-15 | 中国葛洲坝集团股份有限公司 | Installation and adjustment method for cylindrical valve of water turbine |
| CN106066241A (en) * | 2016-06-07 | 2016-11-02 | 浙江工业大学 | The measurement apparatus of device of spring stiffness coefficient |
| CN111879609A (en) * | 2020-06-10 | 2020-11-03 | 浙江工业大学 | Automatic measuring device of spring stiffness coefficient of reloading |
| JP6826254B1 (en) * | 2019-09-06 | 2021-02-03 | 温州▲しゅう▼途電子科技有限公司 | Equipment that can quickly measure the elastic modulus of a spring |
-
2022
- 2022-01-14 CN CN202310455944.7A patent/CN116398353A/en active Pending
- 2022-01-14 CN CN202210044408.3A patent/CN114483418B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915197A (en) * | 2010-09-07 | 2010-12-15 | 中国葛洲坝集团股份有限公司 | Installation and adjustment method for cylindrical valve of water turbine |
| CN106066241A (en) * | 2016-06-07 | 2016-11-02 | 浙江工业大学 | The measurement apparatus of device of spring stiffness coefficient |
| JP6826254B1 (en) * | 2019-09-06 | 2021-02-03 | 温州▲しゅう▼途電子科技有限公司 | Equipment that can quickly measure the elastic modulus of a spring |
| CN111879609A (en) * | 2020-06-10 | 2020-11-03 | 浙江工业大学 | Automatic measuring device of spring stiffness coefficient of reloading |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116398353A (en) | 2023-07-07 |
| CN114483418B (en) | 2023-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101958676B1 (en) | Bolt tightening robot for wind turbines | |
| CN102589784B (en) | Testing device for relationship between pre-tightening force and torque for threaded fastening connection | |
| CN114483418A (en) | Device and method for verifying yield spring stiffness coefficient of speed regulator of hydroelectric generating set | |
| CN114739619A (en) | Combined loading test system and loading test method for airplane pneumatic impact test | |
| KR20120096612A (en) | Device for measuring compressive forces of governor spring | |
| CN113970435B (en) | Axial stress pre-tightening bolt connection strength experiment table and experiment method thereof | |
| CN203287173U (en) | Manual spring tension-compression testing machine | |
| CN111982443B (en) | Horizontal vibration test tool capable of loading displacement | |
| CN202886096U (en) | Valve anti-twisting and anti-bending safety performance comprehensive testing device | |
| CN218974042U (en) | Constant pressure spring pressure testing device | |
| CN219391859U (en) | Electrified X-ray detection tool convenient to clamp and install | |
| CN217845348U (en) | Multifunctional electronic belt scale instrument convenient to maintain | |
| CN107702634B (en) | Deformation measuring instrument | |
| CN112082681A (en) | Stress-free installation method for wind power main gearbox | |
| CN112255868A (en) | Gravity unloading device for large off-axis three-mirror space camera | |
| CN113432942B (en) | Honeycomb panel sample preparation device for satellite | |
| CN218787801U (en) | Test device for satisfying rotor differential expansion measurement | |
| CN221824213U (en) | Oil cylinder counterweight test board | |
| CN115655908A (en) | Constant-pressure spring pressure testing device and constant-pressure spring pressure testing method | |
| CN221506422U (en) | Liftable gas probe | |
| CN200993628Y (en) | Equipment for measuring cyclically-deformed hem life for aluminium-plastic plate | |
| CN217505499U (en) | Anchor rod pre-tightening force and torque testing tool | |
| CN102928217A (en) | Comprehensive test device for torsion-resistant and bending-resistant safe performance of valve | |
| CN221826287U (en) | Elastic sheet mounting assembly of weighing sensor | |
| CN216310217U (en) | Door lock motor life detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |