CN110043497B - Early warning method and system for automatic adjustment fault of fan - Google Patents
Early warning method and system for automatic adjustment fault of fan Download PDFInfo
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- CN110043497B CN110043497B CN201910264750.2A CN201910264750A CN110043497B CN 110043497 B CN110043497 B CN 110043497B CN 201910264750 A CN201910264750 A CN 201910264750A CN 110043497 B CN110043497 B CN 110043497B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
Abstract
The invention discloses a method and a system for early warning of automatic fan adjustment faults. The early warning method for the automatic adjustment fault of the fan comprises the following steps: acquiring a first fan parameter of the first fan; the first fan parameter comprises a first fan current and a first fan opening degree; acquiring a second fan parameter of the second fan; the second fan parameter comprises a second fan current and a second fan opening degree; determining the automatic fan adjusting state according to the first fan parameter and the second fan parameter; and carrying out early warning according to the automatic adjusting state of the fan. By adopting the early warning method and the early warning system for the automatic adjustment fault of the fan, the problem of poor product quality can be effectively avoided.
Description
Technical Field
The invention relates to the field of early warning of automatic fan adjustment faults, in particular to an early warning method and system for automatic fan adjustment faults.
Background
In the operation process of the existing boiler, a fan is generally required to convey air with certain current into the boiler, so that the environmental gas in the boiler reaches or meets the corresponding process requirements. In the operation process of the boiler, when the boiler fails due to environmental gas, the environmental gas in the boiler is easy to change if the environmental gas cannot be found and treated in time, so that the quality of prepared products is influenced, and waste products in the whole boiler can be caused in serious cases.
The fan can carry out automatic adjustment to the inside environment gas of boiler, but probably breaks down in fan automatically regulated in-process, and can only go on examining one by one to each part in the boiler after the trouble takes place, consequently, has broken down but the boiler has not caused the problem that the product quality is poor that produces very easily during any reaction yet.
Disclosure of Invention
The invention aims to provide a fan automatic adjustment fault early warning method and system to solve the problem that the quality of produced products is poor easily caused when a boiler has no reaction period after a fault occurs.
In order to achieve the purpose, the invention provides the following scheme:
a pre-warning method for automatic fan adjustment faults is provided, wherein a boiler comprises a first fan and a second fan, and the method comprises the following steps:
acquiring a first fan parameter of the first fan; the first fan parameter comprises a first fan current and a first fan opening degree;
acquiring a second fan parameter of the second fan; the second fan parameter comprises a second fan current and a second fan opening degree;
determining the automatic fan adjusting state according to the first fan parameter and the second fan parameter;
and carrying out early warning according to the automatic adjusting state of the fan.
Optionally, determining an automatic fan adjustment state according to the first fan parameter and the second fan parameter specifically includes:
determining a fan current difference percentage according to the first fan current and the second fan current;
determining the difference percentage of the fan opening degrees according to the first fan opening degree and the second fan opening degree;
and determining the automatic adjusting state of the fan according to the fan current difference percentage and the fan opening difference percentage.
Optionally, determining the fan current difference percentage according to the first fan current and the second fan current specifically includes:
according to formula dlc＝|Da-Db|/(Da+Db) Determining a fan current difference percentage; wherein D isaIs a first fan current; dbIs the second fan current; dlcIs the percentage of the difference in fan current.
Optionally, determining the fan opening difference percentage according to the first fan opening and the second fan opening specifically includes:
according to formula kdc＝|Ka-Kb|/(Ka+Kb) Determining the percentage of the opening difference of the fan; wherein, KaThe opening degree of the first fan; kbThe opening degree of the second fan; k is a radical ofdcIs windPercentage of machine opening difference.
Optionally, determining an automatic fan adjustment state according to the fan current difference percentage and the fan opening difference percentage specifically includes:
determining the grade range of the fan current difference percentage according to the fan current difference percentage; the fan current difference percentage grade range comprises a plurality of current grades, and each current grade corresponds to one current state;
determining the grade range of the fan opening difference percentage according to the fan opening difference percentage; the fan opening difference percentage grade range comprises a plurality of opening grades, and each opening grade corresponds to one opening state;
and determining the automatic adjusting state of the fan according to the opening degree grade and the opening degree state.
An early warning system for automatic fan adjustment faults, comprising:
the first fan parameter acquisition module is used for acquiring first fan parameters of the first fan; the first fan parameter comprises a first fan current and a first fan opening degree;
the second fan parameter acquisition module is used for acquiring second fan parameters of the second fan; the second fan parameter comprises a second fan current and a second fan opening degree;
the fan automatic adjustment state determining module is used for determining the fan automatic adjustment state according to the first fan parameter and the second fan parameter;
and the early warning module is used for carrying out early warning according to the automatic adjusting state of the fan.
Optionally, the module for determining the automatic adjustment state of the fan specifically includes:
the fan current difference percentage determining unit is used for determining the fan current difference percentage according to the first fan current and the second fan current;
the fan opening difference percentage determining unit is used for determining the fan opening difference percentage according to the first fan opening and the second fan opening;
and the fan automatic adjusting state determining unit is used for determining the fan automatic adjusting state according to the fan current difference percentage and the fan opening difference percentage.
Optionally, the fan current difference percentage determining unit specifically includes:
determining the percentage of the fan current difference of the subunits for use in determining the percentage of the fan current difference according to the formula dlc＝|Da-Db|/(Da+Db) Determining a fan current difference percentage; wherein D isaIs a first fan current; dbIs the second fan current; dlcIs the percentage of the difference in fan current.
Optionally, the unit for determining the percentage of the difference in the opening degrees of the fans specifically includes:
a fan opening difference percentage determining subunit for determining the fan opening difference percentage according to a formula kdc＝|Ka-Kb|/(Ka+Kb) Determining the percentage of the opening difference of the fan; wherein, KaThe opening degree of the first fan; kbThe opening degree of the second fan; k is a radical ofdcIs the percentage of the difference of the opening of the fan.
Optionally, the unit for determining the automatic adjustment state of the fan specifically includes:
the fan current difference percentage grade range determining subunit is used for determining a fan current difference percentage grade range according to the fan current difference percentage; the fan current difference percentage grade range comprises a plurality of current grades, and each current grade corresponds to one current state;
the fan opening difference percentage grade range determining subunit is used for determining a fan opening difference percentage grade range according to the fan opening difference percentage; the fan opening difference percentage grade range comprises a plurality of opening grades, and each opening grade corresponds to one opening state;
and the fan automatic adjusting state determining subunit is used for determining the fan automatic adjusting state according to the opening degree grade and the opening degree state.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: the invention provides an early warning method and system for automatic fan adjustment faults.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a flow chart of an early warning method for automatic fan adjustment failure according to the present invention;
fig. 2 is a structural diagram of an automatic fan regulation fault early warning system provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a fan automatic adjustment fault early warning method and system, which can avoid the problem of poor product quality.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a flow chart of an early warning method for a fan automatic adjustment fault provided by the present invention, and as shown in fig. 1, the early warning method for the fan automatic adjustment fault includes that a boiler includes a first fan and a second fan, and includes:
step 101: acquiring a first fan parameter of the first fan; the first fan parameter includes a first fan current and a first fan opening.
Step 102: acquiring a second fan parameter of the second fan; the second fan parameter includes a second fan current and a second fan opening.
Step 103: and determining the automatic fan adjusting state according to the first fan parameter and the second fan parameter.
The step 103 specifically includes: determining a fan current difference percentage according to the first fan current and the second fan current; determining the difference percentage of the fan opening degrees according to the first fan opening degree and the second fan opening degree; and determining the automatic adjusting state of the fan according to the fan current difference percentage and the fan opening difference percentage.
Determining a fan current difference percentage according to the first fan current and the second fan current specifically comprises: according to formula dlc＝|Da-Db|/(Da+Db) Determining a fan current difference percentage; wherein D isaIs a first fan current; dbIs the second fan current; dlcIs the percentage of the difference in fan current.
Table 1 is a fan autoregulation status table based on fan current difference percentage, as shown in table 1.
TABLE 1
| Serial number | Condition | Displaying status |
| 1 | dlc≤dlc0 | First class |
| 2 | dlc0＜dlc≤dlc1 | Second level |
| 3 | dlc1＜dlc≤dlc2 | Third level |
| 4 | dlc＞dlc2 | Fourth level |
Wherein d islc0、dlc1、dlc2The fan current difference percentage set value is the fan current difference percentage set value, and the fan automatic regulation state corresponds to the fault degree: the first grade is less than the second grade is less than the third grade is less than the fourth grade.
Determining the fan opening difference percentage according to the first fan opening and the second fan opening, and specifically comprising: according to formula kdc＝|Ka-Kb|/(Ka+Kb) Determining the percentage of the opening difference of the fan; wherein, KaThe opening degree of the first fan; kbThe opening degree of the second fan; k is a radical ofdcIs the percentage of the difference of the opening of the fan.
Table 2 is a table of automatic fan adjustment states based on the percentage of the difference in the fan opening degree, as shown in table 2.
TABLE 2
Wherein k isdc0、kdc1、kdc2The percentage set value of the opening difference of the fan and the fault degree corresponding to the automatic regulation state of the fan are as follows: the first grade is less than the second grade is less than the third grade is less than the fourth grade.
Determining an automatic fan adjusting state according to the fan current difference percentage and the fan opening difference percentage, and specifically comprising the following steps of: determining the grade range of the fan current difference percentage according to the fan current difference percentage; the fan current difference percentage grade range comprises a plurality of current grades, and each current grade corresponds to one current state; determining the grade range of the fan opening difference percentage according to the fan opening difference percentage; the fan opening difference percentage grade range comprises a plurality of opening grades, and each opening grade corresponds to one opening state; and determining the automatic adjusting state of the fan according to the opening degree grade and the opening degree state.
Step 104: and carrying out early warning according to the automatic adjusting state of the fan.
According to the table 1 and the table 2, when the automatic adjustment state of the fan has a second level, the boiler is indicated to have a fault and immediately gives an alarm and records an event; the recording content includes: fan current, fan guide vane opening (stationary blade or movable blade), current difference percentage, opening difference percentage and trend curve of each shift.
Regarding the permission settings:
1) the operator on duty and the inspector can monitor the page state display and search the alarm record of each point in each shift from the page display.
2) The alarm event statistical table can be checked every shift by operating a special worker and checking.
3) Background settings (manual input) can only be operated by the designer of the manufacturer.
Fig. 2 is a structural diagram of an automatic fan adjustment fault early warning system provided in the present invention, and as shown in fig. 2, an automatic fan adjustment fault early warning system includes:
a first fan parameter obtaining module 201, configured to obtain a first fan parameter of the first fan; the first fan parameter includes a first fan current and a first fan opening.
A second fan parameter obtaining module 202, configured to obtain a second fan parameter of the second fan; the second fan parameter includes a second fan current and a second fan opening.
And the fan automatic adjustment state determining module 203 is configured to determine a fan automatic adjustment state according to the first fan parameter and the second fan parameter.
The blower automatic adjustment state determining module 203 specifically includes: the fan current difference percentage determining unit is used for determining the fan current difference percentage according to the first fan current and the second fan current; the fan opening difference percentage determining unit is used for determining the fan opening difference percentage according to the first fan opening and the second fan opening; and the fan automatic adjusting state determining unit is used for determining the fan automatic adjusting state according to the fan current difference percentage and the fan opening difference percentage.
The fan current difference percentage determination unit specifically comprises: determining the percentage of the fan current difference of the subunits for use in determining the percentage of the fan current difference according to the formula dlc＝|Da-Db|/(Da+Db) Determining a fan current difference percentage; wherein D isaIs a first fan current; dbIs the second fan current; dlcIs the percentage of the difference in fan current.
The fan opening difference percentage determining unit specifically comprises: a fan opening difference percentage determining subunit for determining the fan opening difference percentage according to a formula kdc＝|Ka-Kb|/(Ka+Kb) Determining the percentage of the opening difference of the fan; wherein, KaThe opening degree of the first fan; kbThe opening degree of the second fan; k is a radical ofdcIs the percentage of the difference of the opening of the fan.
The fan automatic adjustment state determining unit specifically includes: the fan current difference percentage grade range determining subunit is used for determining a fan current difference percentage grade range according to the fan current difference percentage; the fan current difference percentage grade range comprises a plurality of current grades, and each current grade corresponds to one current state; the fan opening difference percentage grade range determining subunit is used for determining a fan opening difference percentage grade range according to the fan opening difference percentage; the fan opening difference percentage grade range comprises a plurality of opening grades, and each opening grade corresponds to one opening state; and the fan automatic adjusting state determining subunit is used for determining the fan automatic adjusting state according to the opening degree grade and the opening degree state.
And the early warning module 204 is used for early warning according to the automatic adjustment state of the fan.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (2)
1. The utility model provides a fan automatically regulated trouble early warning method, boiler include first fan and second fan, its characterized in that includes:
acquiring a first fan parameter of the first fan; the first fan parameter comprises a first fan current and a first fan opening degree;
acquiring a second fan parameter of the second fan; the second fan parameter comprises a second fan current and a second fan opening degree;
determining the automatic fan adjusting state according to the first fan parameter and the second fan parameter;
early warning is carried out according to the automatic adjustment state of the fan;
according to formula d1c＝|Da-Db|/(Da+Db) Determining a fan current difference percentage; wherein D isaIs a first fan current; dbIs the second fan current; d1cIs the percentage of the current difference of the fan;
table 1 is a table of fan autoregulation status based on fan current difference percentage, as shown in table 1,
TABLE 1
Wherein d is1c0、d1c1、d1c2The fan current difference percentage set value is the fan current difference percentage set value, and the fan automatic regulation state corresponds to the fault degree: the first grade is less than the second grade and less than the third grade and less than the fourth grade;
according to formula kdc＝|Ka-Kb|/(Ka+Kb) Determining the percentage of the difference of the opening degrees of the fans; wherein, KaThe opening degree of the first fan; kbThe opening degree of the second fan; k is a radical ofdcIs the percentage of the difference of the opening of the fan;
table 2 is a table of automatic fan adjustment status based on fan opening difference percentage, as shown in table 2,
TABLE 2
Wherein k isdc0、kdc1、kdc2The percentage set value of the opening difference of the fan and the fault degree corresponding to the automatic regulation state of the fan are as follows: the first grade is less than the second grade and less than the third grade and less than the fourth grade;
when the automatic adjustment state of the fan is in a second level, the boiler is indicated to be out of order and immediately gives an alarm and records an event.
2. The utility model provides a fan automatically regulated trouble early warning system which characterized in that includes:
the first fan parameter acquisition module is used for acquiring first fan parameters of the first fan; the first fan parameter comprises a first fan current and a first fan opening degree;
the second fan parameter acquisition module is used for acquiring second fan parameters of the second fan; the second fan parameter comprises a second fan current and a second fan opening degree;
the fan automatic adjustment state determining module is used for determining the fan automatic adjustment state according to the first fan parameter and the second fan parameter;
the early warning module is used for early warning according to the automatic adjusting state of the fan;
according to formula d1c＝|Da-Db|/(Da+Db) Determining a fan current difference percentage; wherein D isaIs a first fan current; dbIs the second fan current; d1cIs the percentage of the current difference of the fan;
table 1 is a table of fan autoregulation status based on fan current difference percentage, as shown in table 1,
TABLE 1
Wherein d is1c0、d1c1、d1c2The fan current difference percentage set value is the fan current difference percentage set value, and the fan automatic regulation state corresponds to the fault degree: the first grade is less than the second grade and less than the third grade and less than the fourth grade;
according to formula kdc＝|Ka-Kb|/(Ka+Kb) Determining the percentage of the difference of the opening degrees of the fans; wherein, KaThe opening degree of the first fan; kbThe opening degree of the second fan; k is a radical ofdcIs the percentage of the difference of the opening of the fan;
table 2 is a table of automatic fan adjustment status based on fan opening difference percentage, as shown in table 2,
TABLE 2
Wherein k isdc0、kdc1、kdc2The percentage set value of the opening difference of the fan and the fault degree corresponding to the automatic regulation state of the fan are as follows: the first grade is less than the second grade and less than the third grade and less than the fourth grade;
when the automatic adjustment state of the fan is in a second level, the boiler is indicated to be out of order and immediately gives an alarm and records an event.
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| CN114738308B (en) * | 2022-04-28 | 2024-01-23 | 中国华能集团清洁能源技术研究院有限公司 | Fan fault early warning method and system capable of positioning specific equipment |
| CN115090514A (en) * | 2022-06-24 | 2022-09-23 | 北京建工资源循环利用投资有限公司 | Control method and device of garbage screening system, electronic equipment and medium |
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| CN101482127B (en) * | 2008-01-08 | 2012-11-07 | 北京博奇电力科技有限公司 | Parallel operation optimizing control method and system of booster fan |
| CN103148007A (en) * | 2012-11-27 | 2013-06-12 | 洛阳源创电气有限公司 | Mine ventilating fan control system capable of automatically adjusting air quantity |
| CN103883551B (en) * | 2014-03-31 | 2016-01-20 | 国家电网公司 | A kind of controlling method eliminating axial-flow blower surge |
| CN204610337U (en) * | 2015-03-11 | 2015-09-02 | 徐州能达燃烧控制工程有限公司 | A kind of fire inspection cooling blower fault pre-alarming device |
| CN105386992A (en) * | 2015-12-08 | 2016-03-09 | 国网山东省电力公司电力科学研究院 | Optimal control system based on draught fan power output dynamic balance and method |
| CN107270472B (en) * | 2017-06-05 | 2019-10-15 | 广东美的暖通设备有限公司 | Method for controlling number of revolution, revolution speed control system and air-conditioning |
| CN109340162B (en) * | 2018-11-26 | 2020-04-14 | 贵州金元茶园发电有限责任公司 | System and method for preventing primary fan of thermal power generating unit from stalling and blowing out |
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