CN107091939A - A kind of fired power generating unit large fan rotating measuring method - Google Patents
A kind of fired power generating unit large fan rotating measuring method Download PDFInfo
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- CN107091939A CN107091939A CN201710299918.4A CN201710299918A CN107091939A CN 107091939 A CN107091939 A CN 107091939A CN 201710299918 A CN201710299918 A CN 201710299918A CN 107091939 A CN107091939 A CN 107091939A
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- Prior art keywords
- reflecting strips
- feedback signal
- fan
- generating unit
- power generating
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
- G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of fired power generating unit large fan rotating measuring method, this method is that three reflecting strips are pasted in distribution in the relative position of different fan radiating blades, it is respectively 45 ° to make three reflecting strips interval angles, 90 °, 225 °, then the project signal of certain frequency is launched to blower fan radiator shutter, according to reflecting strips feedback signal, accurately judge that blower fan turns clockwise or rotate counterclockwise, wherein, collection reflecting strips feedback signal method be, using a pair of infrared transmitters and infrared remote receiver, the output of infrared remote receiver is connected with oscillograph, by the feedback signal of three reflecting strips of oscilloscope.The present invention pastes reflecting strips by fan radiating blade diverse location, pass through the frequency interval of feedback signal, Reversion in thermal power plant's large fan equipment start-up course can be found in time, it is to avoid the generation of security incident with the positive-negative rotation state of accurate and visual determination blower fan.
Description
Technical field
The invention belongs to Utility Boiler Technology field, particularly a kind of fired power generating unit large fan rotating measuring method.
Background technology
In thermal power plant's large fan start-up course, the situation of blower fan reversion is frequently encountered, the startup on blower fan produces influence,
If without finding in time, easily causing motor burning, but it is due to that blower motor rotating speed is higher, only by visually observe can not be timely
It was found that motor reversal.Therefore need to research and develop a kind of positive-negative rotation state of the accurate and visual determination blower fan of method.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, and to propose a kind of fired power generating unit large fan rotating measurement
Method.
The present invention solves its technical problem and takes following technical scheme to realize：
A kind of fired power generating unit large fan rotating measuring method, this method is in the relative of different fan radiating blades
Three reflecting strips are pasted in distribution on position, and it is respectively 45 °, 90 °, 225 ° to make three reflecting strips interval angles, are then dissipated to blower fan
Hot blade launches the project signal of certain frequency, according to reflecting strips feedback signal, it is accurate judge blower fan turn clockwise or
Rotate counterclockwise.
Moreover, the method for collection reflecting strips feedback signal is, it is infrared to connect using a pair of infrared transmitters and infrared remote receiver
The output for receiving device is connected with oscillograph, by the feedback signal of three reflecting strips of oscilloscope.
Moreover, the reflection coefficient of a reflecting strips in three reflecting strips is reduced, made with the feedback signal of the reflecting strips
Judge basic point for the sequential in continuous feedback signal.
Advantages and positive effects of the present invention are：
The present invention pastes reflecting strips by motor radiating blade diverse location, by the frequency interval of feedback signal, can be with
The positive-negative rotation state of accurate and visual determination blower fan, finds the reversion feelings in thermal power plant's large fan equipment start-up course in time
Condition, it is to avoid the generation of security incident.
Brief description of the drawings
Fig. 1 is reflecting piece stickup schematic diagram in the present invention；
Fig. 2 is that blower fan turns clockwise feedback signal schematic diagram；
Fig. 3 is blower fan rotate counterclockwise feedback signal schematic diagram.
Embodiment
The embodiment of the present invention is further described below：It is emphasized that embodiment of the present invention is explanation
Property, rather than it is limited, therefore the present invention is not limited to the embodiment described in embodiment, it is every by this area
The other embodiment that technical staff's technique according to the invention scheme is drawn, also belongs to the scope of protection of the invention.
A kind of fired power generating unit large fan rotating measuring method, as shown in figure 1, this method be in fan radiating blade not
Three reflecting strips are pasted with position distribution, interval angles are respectively 45 °, and 90 °, 225 °, according to reflecting strips feedback signal, blower fan is suitable
Hour hands rotational feedback signal is as shown in Fig. 2 blower fan rotate counterclockwise feedback signal is as shown in figure 3, accurately judge that blower fan is up time
Pin rotates or rotate counterclockwise.
In the specific implementation of the present invention, the method for collection reflecting strips feedback signal is, by the letter for launching certain frequency
Number three reflecting strips of light irradiation, then by the reflection light collection of three reflecting strips and including on oscillograph.It can specifically adopt
With a pair of infrared transmitters and receiver, the output of infrared remote receiver is connected with oscillograph, the receiving reflected by oscilloscope
Signal.
It is in order to preferably determine the sequential of three reflecting strips, one of those is reflective in the specific implementation of the present invention
Bar reflection coefficient reduction, using the feedback signal of the reflecting strips as continuous feedback signal in sequential judge basic point.
Claims (3)
1. a kind of fired power generating unit large fan rotating measuring method, it is characterised in that：This method is in different fan radiatings
Three reflecting strips are pasted in distribution in the relative position of blade, and it is respectively 45 °, 90 °, 225 ° to make three reflecting strips interval angles, so
Backward fan radiating blade launches the project signal of certain frequency, according to reflecting strips feedback signal, accurately judges that blower fan is up time
Pin rotates or rotate counterclockwise.
2. fired power generating unit large fan rotating measuring method according to claim 1, it is characterised in that：Gather reflecting strips
The method of feedback signal is, using a pair of infrared transmitters and infrared remote receiver, and the output of infrared remote receiver is connected with oscillograph,
By the feedback signal of three reflecting strips of oscilloscope.
3. fired power generating unit large fan rotating measuring method according to claim 1, it is characterised in that：It is reflective by three
A reflecting strips in bar reflection coefficient reduction, using the feedback signal of the reflecting strips as continuous feedback signal in sequential sentence
Disconnected basic point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710299918.4A CN107091939A (en) | 2017-04-28 | 2017-04-28 | A kind of fired power generating unit large fan rotating measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710299918.4A CN107091939A (en) | 2017-04-28 | 2017-04-28 | A kind of fired power generating unit large fan rotating measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107091939A true CN107091939A (en) | 2017-08-25 |
Family
ID=59638379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710299918.4A Pending CN107091939A (en) | 2017-04-28 | 2017-04-28 | A kind of fired power generating unit large fan rotating measuring method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107091939A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693373A (en) * | 2018-05-22 | 2018-10-23 | 西京学院 | A kind of PWM code-discs speed probe |
| CN109061223A (en) * | 2018-07-12 | 2018-12-21 | 四川虹美智能科技有限公司 | A kind of method and system that detection electric motor fan turns to |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02291970A (en) * | 1989-05-01 | 1990-12-03 | Shinwa Kk | Rotation detecting body and apparatus for detecting abnormal rotation |
| CN101275969A (en) * | 2008-04-24 | 2008-10-01 | 江苏大江木业有限公司 | Method for digital detecting rotating equipment rotary speed and rotary direction with single sensor |
| CN102331509A (en) * | 2011-06-15 | 2012-01-25 | 国网电力科学研究院 | Motor speed measuring method capable of judging direction of rotating speed |
| CN102338810A (en) * | 2010-10-09 | 2012-02-01 | 上海复展照明科技有限公司 | Clockwise and counterclockwise rotation judging method and system of rotating wheel |
| CN104779849A (en) * | 2015-03-19 | 2015-07-15 | 四川长虹电器股份有限公司 | Method for detecting and controlling positive/negative rotation of outdoor fan during upwind running |
| CN106405148A (en) * | 2016-10-19 | 2017-02-15 | 上海未来伙伴机器人有限公司 | Method for detecting forward and reverse rotation of motor through using photoelectric encoder |
-
2017
- 2017-04-28 CN CN201710299918.4A patent/CN107091939A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02291970A (en) * | 1989-05-01 | 1990-12-03 | Shinwa Kk | Rotation detecting body and apparatus for detecting abnormal rotation |
| CN101275969A (en) * | 2008-04-24 | 2008-10-01 | 江苏大江木业有限公司 | Method for digital detecting rotating equipment rotary speed and rotary direction with single sensor |
| CN102338810A (en) * | 2010-10-09 | 2012-02-01 | 上海复展照明科技有限公司 | Clockwise and counterclockwise rotation judging method and system of rotating wheel |
| CN102331509A (en) * | 2011-06-15 | 2012-01-25 | 国网电力科学研究院 | Motor speed measuring method capable of judging direction of rotating speed |
| CN104779849A (en) * | 2015-03-19 | 2015-07-15 | 四川长虹电器股份有限公司 | Method for detecting and controlling positive/negative rotation of outdoor fan during upwind running |
| CN106405148A (en) * | 2016-10-19 | 2017-02-15 | 上海未来伙伴机器人有限公司 | Method for detecting forward and reverse rotation of motor through using photoelectric encoder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693373A (en) * | 2018-05-22 | 2018-10-23 | 西京学院 | A kind of PWM code-discs speed probe |
| CN109061223A (en) * | 2018-07-12 | 2018-12-21 | 四川虹美智能科技有限公司 | A kind of method and system that detection electric motor fan turns to |
| CN109061223B (en) * | 2018-07-12 | 2020-10-23 | 四川虹美智能科技有限公司 | Method and system for detecting motor fan steering |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170825 |
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| RJ01 | Rejection of invention patent application after publication |