CN111022129A - Speed-limiting protection device for blade of blade sinking type turbine generator - Google Patents
Speed-limiting protection device for blade of blade sinking type turbine generator Download PDFInfo
- Publication number
- CN111022129A CN111022129A CN201911414676.4A CN201911414676A CN111022129A CN 111022129 A CN111022129 A CN 111022129A CN 201911414676 A CN201911414676 A CN 201911414676A CN 111022129 A CN111022129 A CN 111022129A
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- Prior art keywords
- blade
- base
- spring
- turbine generator
- blades
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- 238000000034 method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D7/00—Rotors with blades adjustable in operation; Control thereof
- F01D7/02—Rotors with blades adjustable in operation; Control thereof having adjustment responsive to speed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention provides a speed-limiting protection device for a blade of a blade sinking type turbine generator, which structurally comprises: the device comprises a base, a fixed blade, a movable blade and a spring; wherein the fixed blade and the base are in a fixed state, a limiting structure is arranged between the movable blade and the base, and the spring is arranged at the limiting structure and used for connecting the movable blade. When the turbine generator is in a non-working state, the spring below the movable blade is in a compressed state; when the turbine generator is in operation: when the rotating speed of the blade is less than the allowable highest rotating speed, the movable blade is pressed by the spring and cannot move downwards; when the rotating speed of the blade is more than or equal to the highest rotating speed, the movable blade is pulled downwards by the spring and is retracted into the base.
Description
Technical Field
The invention relates to the field of turbine generators, in particular to a speed-limiting protection device for a blade of a blade sinking type turbine generator.
Background
The air inlet speed of the existing turbine generator cannot be too high, and the rotating speed of blades is too high, so that the induced current is too large, and the turbine generator is possibly burnt.
Aiming at the problem that the speed of the turbine generator is too high due to the fact that the air inlet speed of the air inlet is too high, the rotating speed of the blades is too high, and the motor is burnt out, the speed-limiting protection device for the blades of the turbine generator is designed.
Disclosure of Invention
In view of the above technical problems, the present invention is directed to: the utility model provides a speed limit protection device of formula turbine generator blade sinks, its effective blade quantity reduces for blade bearing torque reduces, guarantees that turbine generator can not burn down under high-speed rotation yet.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the utility model provides a speed limit protection device of formula turbine generator blade sinks, its structure includes: the device comprises a base, a fixed blade, a movable blade and a spring; wherein the fixed blade and the base are in a fixed state, a limiting structure is arranged between the movable blade and the base, and the spring is arranged at the limiting structure and used for connecting the movable blade.
The fixed blades and the movable blades are arranged on the base at intervals in the axial direction.
The limiting structure is arranged on the edge of the base and obliquely arranged, an upper opening of the limiting structure is formed, and the opening direction is obliquely upward along the rotation direction of the blade.
When the turbine generator is in operation:
when the rotating speed of the blades is less than the allowable highest rotating speed, the centrifugal force at the rotating speed is less than the pressure of the spring, and the movable blades are stressed by the pressure of the spring, so that the blades cannot move downwards; due to the existence of the limiting device, the lower part of the movable blade is pressed downwards by the base, and the blade cannot move upwards.
When the rotating speed of the blades is more than or equal to the highest rotating speed, the centrifugal force at the rotating speed is more than the pressure of the spring, and the movable blades are drawn back into the base by the downward tension of the spring. At the moment, the rotating speed of the blades is reduced due to the reduction of the number of the blades, so that the motor is protected and cannot be burnt.
The invention has the beneficial effects that: the structure is simple, the adjustment is convenient, the over-high rotation speed protection of the turbine generator is realized, so that the number of effective blades is reduced, the bearing torque of the blades is reduced and the turbine generator is prevented from being burnt out under the over-high rotation speed; the method can be generally applied to the turbine power generation condition with ultrahigh air inlet speed.
Drawings
FIG. 1 is a schematic view of a turbine generator protection device;
FIG. 2 is a schematic view of a spacing device;
FIG. 3 is a schematic view of the movable vane and spring position in the non-operating state;
FIG. 4 is a schematic view of the protection device in an operational state;
in the figure: 1. a base; 2. A fixed blade; 3. A movable vane; 4. A spring; 5. a limiting structure.
Detailed Description
The invention is explained by the following embodiments, as shown in fig. 1-4, the application provides a speed-limiting protection device of a blade sinking type turbine motor, which is composed of four parts, namely a base 1, a fixed blade 2, a movable blade 3 and a spring 4; wherein the fixed blade 2 and the base 1 are in a fixed state, a limit structure is arranged between the movable blade 3 and the base 1, the spring 4 is arranged at the limit structure 5, and the spring 4 is connected between the movable blade 3 and the base 1 and is in a compressed state. As shown in fig. 2, the spacing and spring arrangement between the base and the movable vane can be seen; the fixed blades and the movable blades are arranged on the base at intervals in the axial direction; the limiting structure is arranged on the edge of the base and obliquely arranged, an upper opening of the limiting structure is formed, and the opening direction is obliquely upward along the rotation direction of the blade.
When the turbine generator is in a non-working state, the spring below the movable blade is in a compressed state, and the movable blade cannot be ejected out of the base due to the action of the limiting device, as shown in fig. 3.
When the turbine generator is in operation:
when the rotating speed of the blades is less than the allowable highest rotating speed, the centrifugal force at the rotating speed is less than the pressure of the spring, and the movable blades are stressed by the pressure of the spring, so that the blades cannot move downwards; due to the existence of the limiting device, the lower part of the movable blade is pressed downwards by the base, and the blade cannot move upwards.
When the vane rotation speed is higher than or equal to the maximum rotation speed, the centrifugal force at the rotation speed is higher than the pressure of the spring, and the movable vane is pulled downwards by the spring and is retracted into the base, as shown in fig. 4. At the moment, the rotating speed of the blades is reduced due to the reduction of the number of the blades, so that the motor is protected and cannot be burnt.
The invention has simple structure and convenient adjustment, realizes the protection of overhigh rotating speed of the turbine generator, reduces the number of effective blades and the bearing torque of the blades under overhigh rotating speed, and ensures that the turbine generator can not be burnt; the method can be generally applied to the turbine power generation condition with ultrahigh air inlet speed.
Claims (3)
1. The utility model provides a speed limit protection device of formula turbine generator blade sinks which characterized in that: the structure includes: the device comprises a base, a fixed blade, a movable blade and a spring; the fixed blade and the base are in a fixed state, a limiting structure is arranged between the movable blade and the base, and the spring is arranged at the limiting structure and used for connecting the movable blade;
the fixed blades and the movable blades are arranged on the base at intervals in the axial direction;
the limiting structure is arranged on the edge of the base and obliquely arranged, an upper opening of the limiting structure is formed, and the opening direction is obliquely upward along the rotation direction of the blade.
2. The speed-limiting protection device of a blade-sinking turbine generator according to claim 1, characterized in that: when the turbine generator is in a working state and the rotating speed of the blades is less than the allowable highest rotating speed, the centrifugal force at the rotating speed is less than the pressure of the spring, and the movable blades are subjected to the pressure of the spring, so that the blades cannot move downwards; due to the existence of the limiting device, the lower part of the movable blade is pressed downwards by the base, and the blade cannot move upwards.
3. The speed-limiting protection device of a blade-sinking turbine generator according to claim 1, characterized in that: when the turbine generator is in a working state, and the rotating speed of the blades is greater than or equal to the highest rotating speed, the centrifugal force at the rotating speed is greater than the pressure of the spring, and the movable blades are drawn downwards by the spring and are retracted into the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911414676.4A CN111022129A (en) | 2019-12-31 | 2019-12-31 | Speed-limiting protection device for blade of blade sinking type turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911414676.4A CN111022129A (en) | 2019-12-31 | 2019-12-31 | Speed-limiting protection device for blade of blade sinking type turbine generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111022129A true CN111022129A (en) | 2020-04-17 |
Family
ID=70197802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911414676.4A Pending CN111022129A (en) | 2019-12-31 | 2019-12-31 | Speed-limiting protection device for blade of blade sinking type turbine generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111022129A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101230789A (en) * | 2007-01-23 | 2008-07-30 | 斯奈克玛 | Turbo-propeller comprising a propeller formed by blades with adjustable orientation |
| CN101490410A (en) * | 2006-07-21 | 2009-07-22 | 剪式风能科技公司 | Retractable rotor blade structure |
| CN103046969A (en) * | 2013-01-09 | 2013-04-17 | 于魁江 | Novel pneumatic impeller |
| CN104307645A (en) * | 2014-10-09 | 2015-01-28 | 苏州可纳粉体技术有限公司 | Centrifugal grader with blade inclination adjustable grading wheel |
| CN104343640A (en) * | 2014-10-16 | 2015-02-11 | 温振雄 | Vehicle-mounted wind power generation device |
-
2019
- 2019-12-31 CN CN201911414676.4A patent/CN111022129A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101490410A (en) * | 2006-07-21 | 2009-07-22 | 剪式风能科技公司 | Retractable rotor blade structure |
| CN101230789A (en) * | 2007-01-23 | 2008-07-30 | 斯奈克玛 | Turbo-propeller comprising a propeller formed by blades with adjustable orientation |
| CN103046969A (en) * | 2013-01-09 | 2013-04-17 | 于魁江 | Novel pneumatic impeller |
| CN104307645A (en) * | 2014-10-09 | 2015-01-28 | 苏州可纳粉体技术有限公司 | Centrifugal grader with blade inclination adjustable grading wheel |
| CN104343640A (en) * | 2014-10-16 | 2015-02-11 | 温振雄 | Vehicle-mounted wind power generation device |
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