CN113153793A - Primary air fan and fan hydraulic cylinder fault automatic detection and emergency processing system - Google Patents
Primary air fan and fan hydraulic cylinder fault automatic detection and emergency processing system Download PDFInfo
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- CN113153793A CN113153793A CN202110289060.XA CN202110289060A CN113153793A CN 113153793 A CN113153793 A CN 113153793A CN 202110289060 A CN202110289060 A CN 202110289060A CN 113153793 A CN113153793 A CN 113153793A
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- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 238000012545 processing Methods 0.000 title claims description 10
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 7
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- 238000007689 inspection Methods 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 3
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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
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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
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
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Abstract
The invention relates to the technical field of power plant power equipment protection systems, in particular to a primary fan and fan hydraulic cylinder fault automatic detection and emergency treatment system. The method comprises the following steps: monitoring the running condition of a primary air fan; analyzing and obtaining primary air fan operation data; comparing whether the operation data of the primary air fan accords with a preset judgment parameter value, and judging the working state of the hydraulic cylinder of the primary air fan; judging the working state of a primary air fan hydraulic cylinder, and sending a normal operation instruction or a switching adjustment instruction to an induced draft fan and the primary air fan on the opposite side; and after the induced draft fan and the opposite side primary air fan are switched and adjusted, the induced draft fan and the opposite side primary air fan are switched to be automatically adjusted and connected by the control system. The gain effect of the invention is: according to the invention, a series of operations and adjustments are rapidly carried out after the fault is automatically detected, so that the primary air pressure of a subsequent system is maintained stable, the pressure control of the hearth is advanced, the faults of the primary air fan hydraulic cylinder are pre-judged in advance, the air supply structure is automatically adjusted in time, and the normal operation of a power generation system is effectively guaranteed.
Description
Technical Field
The invention relates to the technical field of power plant power equipment protection systems, in particular to a primary fan and fan hydraulic cylinder fault automatic detection and emergency treatment system.
Background
In a power generation system of a power plant, a primary fan is power source equipment for conveying and supplying pulverized coal, a primary fan hydraulic cylinder is used as adjusting equipment for air outlet pressure of the primary fan, once a fault occurs, the fan is out of control and output all output power, an air duct air pressure top meter leads to system automatic adjustment failure, system pressure suddenly drops after the tripping operation of the fan with the fault of the hydraulic cylinder, the whole process can be operated for only a few seconds, operation operators cannot adjust the system pressure in time, the primary air pressure of a coal mill is easily lost, a protection mechanism is triggered, all the coal mills are tripped, and the unit tripping operation is caused. The primary air pressure is lost, meanwhile, the air is deficient in the hearth, the negative pressure of the hearth is too large, even the overhigh negative pressure can cause the boiler to implode, and the danger is extremely high.
In view of the defects of the existing system in the primary air fan hydraulic cylinder fault detection and treatment, a technical scheme which can quickly and accurately detect and judge the primary air fan hydraulic cylinder running condition in real time, can quickly react when the primary air fan hydraulic cylinder fails and can provide enough effective treatment time is urgently needed to maintain the normal running of the power plant power generation system.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a primary air fan and fan hydraulic cylinder fault automatic detection and emergency processing system capable of quickly responding and effectively performing fault emergency adjustment.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a primary air fan and fan hydraulic cylinder fault automatic detection and emergency processing system comprises the following steps:
s1: the monitoring system monitors the running condition of the primary air fan and preliminarily monitors whether the primary air fan runs normally or not;
s2: the analysis system acquires the operation data of the feedback primary air fan, and transmits the operation data of each part of the primary air fan, which is monitored by the monitoring system, to the analysis system for processing;
s3: the analysis system judges the working state of the primary air fan hydraulic cylinder by comparing whether the operation data of the primary air fan fed back by the monitoring system conforms to a preset judgment parameter value or not, and the analysis system compares the real-time operation data of the primary air fan with the preset judgment parameter value and analyzes the operation to comprehensively obtain the working state of the primary air fan hydraulic cylinder;
s4: judging the working state of a primary air fan hydraulic cylinder according to an S3 analysis system, feeding the working state back to a control system, enabling the control system to quickly respond, and sending regulation and control instructions to an induced draft fan and an opposite-side primary air fan in time, wherein the regulation and control instructions comprise normal operation instructions or switching regulation instructions, so that the induced draft fan and the opposite-side primary air fan can quickly respond, enough regulation time is strived for operation operators, and the air pressure of an air supply system is stabilized within safe operation time;
s5: after the induced draft fan and the opposite side primary air fan are switched and adjusted, the induced draft fan and the opposite side primary air fan are switched to be automatically adjusted and connected into the air supply system by the control system, and finally the control system adjusts the air pressure of the air supply system and the negative pressure in the hearth.
Preferably, the operation data of the primary air fan obtained by the S2 includes primary air fan current data and primary air fan air outlet pressure data, and the acquired data is fed back and transmitted to the analysis system in real time.
Preferably, the preset judgment parameter value for judging the working state of the primary air fan hydraulic cylinder in S3 is:
when the primary fan current data and the outlet pressure data are under preset judgment parameter values, judging that the primary fan hydraulic cylinder is in a normal working state; and when the current data and the outlet pressure data of the primary fan exceed the preset judgment parameter values, judging that the hydraulic cylinder of the primary fan is in a fault working state.
Preferably, when the hydraulic cylinder of the primary air fan is judged to be in a normal working state in the step S3, the normal operation of the air supply system is maintained, and the operation is repeated in the step S1.
Preferably, when the hydraulic cylinder of the primary air fan is judged to be in a fault working state in the step S3, a switching adjustment instruction is sent to the induced draft fan and the primary air fan on the opposite side.
Preferably, the switching adjustment instruction is:
the transmission of the opposite side fan is switched to manual control, the running state of the system can be maintained through rapid manual adjustment,
when the primary air fan is tripped due to overhigh current, a static blade opening and closing adjusting instruction is immediately sent to the induced draft fan, a movable blade adjusting instruction is sent to the primary air fan on the opposite side, and after the induced draft fan and the primary air fan on the opposite side are adjusted, a movable blade automatic adjusting instruction is sent to the primary air fan on the opposite side according to a preset delay time value.
Preferably, the induced draft fan sends the quiet leaf and opens and shuts the adjustment instruction and close for quiet leaf and reduce 5% aperture, send the moving blade adjustment instruction to offside primary air fan and increase 5% aperture for the moving blade. The induced draft fan sends quiet leaf adjustment of opening and shutting and the contralateral primary air fan sends the movable vane adjustment and can carry out parameter optimization adjustment according to concrete variable quantity.
Preferably, the preset judgment parameter values of the primary fan current data and the outlet pressure data are as follows:
the primary fan current is preferably 380A and the primary fan outlet pressure is preferably 13 Kpa. And adjusting preset judgment parameter values for different fan models.
Preferably, the S5 control system carries out automatic adjustment and access of the air supply system, the control system automatically adjusts the air pressure of the primary air fan and the negative pressure of the hearth to a preset stable value, the air pressure of the primary air supply system and the negative pressure in the hearth are quickly recovered and stabilized, and the operation safety of the whole power generation system is guaranteed.
Preferably, the system is a DCS control system.
Compared with the prior art, the gain effect of the invention is as follows: at present, the automatic detection and emergency treatment of the primary fan hydraulic cylinder faults do not have the prior art practice, the invention is designed for the first time, and the emergency treatment system quickly performs a series of operations and adjustments after automatically detecting the faults, so that the primary air pressure of a subsequent system is maintained stable, and the pressure control of a hearth is processed in advance.
The invention monitors the primary fan current and the outlet pressure in real time, judges the fault condition of the fan hydraulic cylinder by analyzing and combining logic, quickly carries out emergency treatment on an air supply system, immediately switches the opposite side fan manually, immediately adjusts the opening of the fixed blade of the induced draft fan and the movable blade of the opposite side primary fan when the fault fan current is over-high and trips, then quickly puts into automatic adjustment, and is accessed by a control system for automatic adjustment, thus preempting the air pressure of the system.
The invention realizes that the fault of the hydraulic cylinder of the primary fan is pre-judged in advance, the opposite side fan and the induced fan are automatically adjusted in time, the serious consequences of unit tripping or boiler furnace implosion and the like caused by over-high negative pressure of the furnace chamber after the fault fan trips are avoided, and the normal operation of the power generation system is effectively ensured.
The access of the invention is beneficial to detecting the operation condition of the primary air fan hydraulic cylinder in time, and the control system automatically carries out emergency treatment when a fault occurs, thereby reducing the difficulty of operation adjustment and gaining reaction time for subsequent manual intervention adjustment.
Drawings
Fig. 1 is a logic diagram of the automatic fault detection and emergency treatment system of the present invention.
FIG. 2 is a logic diagram of the opposite primary blower command of the present invention.
FIG. 3 is a logic diagram of the induced draft fan command of the present invention.
FIG. 4 is a schematic view of a fan system of the present invention.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
To further clarify the objects, features and functions of the present invention, a review board will be provided by referring to the following description of the preferred embodiments in conjunction with the accompanying drawings:
referring to fig. 1-4, the present invention is a primary air fan and fan hydraulic cylinder failure automatic detection and emergency processing system, including the following steps:
s1: the monitoring system monitors the running condition of the primary air fan and preliminarily monitors whether the primary air fan runs normally or not;
s2: the analysis system acquires the operation data of the feedback primary air fan, and transmits the operation data of each part of the primary air fan, which is monitored by the monitoring system, to the analysis system for processing;
s3: the analysis system judges the working state of the primary air fan hydraulic cylinder by comparing whether the operation data of the primary air fan fed back by the monitoring system conforms to a preset judgment parameter value or not, and the analysis system compares the real-time operation data of the primary air fan with the preset judgment parameter value and analyzes the operation to comprehensively obtain the working state of the primary air fan hydraulic cylinder;
s4: judging the working state of a primary air fan hydraulic cylinder according to an S3 analysis system, feeding the working state back to a control system, enabling the control system to quickly respond, and sending regulation and control instructions to an induced draft fan and an opposite-side primary air fan in time, wherein the regulation and control instructions comprise normal operation instructions or switching regulation instructions, so that the induced draft fan and the opposite-side primary air fan can quickly respond, enough regulation time is strived for operation operators, and the air pressure of an air supply system is stabilized within safe operation time;
s5: after the induced draft fan and the opposite side primary air fan are switched and adjusted, the induced draft fan and the opposite side primary air fan are switched to be automatically adjusted and connected into the air supply system by the control system, and finally the control system adjusts the air pressure of the air supply system and the negative pressure in the hearth.
Preferably, the operation data of the primary air fan obtained by the S2 includes primary air fan current data and primary air fan air outlet pressure data, and the acquired data is fed back and transmitted to the analysis system in real time.
Preferably, the preset judgment parameter value for judging the working state of the primary air fan hydraulic cylinder in S3 is:
when the primary fan current data and the outlet pressure data are under preset judgment parameter values, judging that the primary fan hydraulic cylinder is in a normal working state; and when the current data and the outlet pressure data of the primary fan exceed the preset judgment parameter values, judging that the hydraulic cylinder of the primary fan is in a fault working state.
Preferably, when the hydraulic cylinder of the primary air fan is judged to be in a normal working state in the step S3, the normal operation of the air supply system is maintained, and the operation is repeated in the step S1.
Preferably, when the hydraulic cylinder of the primary air fan is judged to be in a fault working state in the step S3, a switching adjustment instruction is sent to the induced draft fan and the primary air fan on the opposite side.
Preferably, the switching adjustment instruction is:
the transmission of the opposite side fan is switched to manual control, the running state of the system can be maintained through rapid manual adjustment,
when the primary air fan is tripped due to overhigh current, a static blade opening and closing adjusting instruction is immediately sent to the induced draft fan, a movable blade adjusting instruction is sent to the primary air fan on the opposite side, and after the induced draft fan and the primary air fan on the opposite side are adjusted, a movable blade automatic adjusting instruction is sent to the primary air fan on the opposite side according to a preset delay time value.
Preferably, the induced draft fan sends the quiet leaf and opens and shuts the adjustment instruction and close for quiet leaf and reduce 5% aperture, send the moving blade adjustment instruction to offside primary air fan and increase 5% aperture for the moving blade. The induced draft fan sends quiet leaf adjustment of opening and shutting and the contralateral primary air fan sends the movable vane adjustment and can carry out parameter optimization adjustment according to concrete variable quantity.
Preferably, the preset judgment parameter values of the primary fan current data and the outlet pressure data are as follows:
the primary fan current is preferably 380A and the primary fan outlet pressure is preferably 13 Kpa. And adjusting preset judgment parameter values for different fan models.
Preferably, the S5 control system carries out automatic adjustment and access of the air supply system, the control system automatically adjusts the air pressure of the primary air fan and the negative pressure of the hearth to a preset stable value, the air pressure of the primary air supply system and the negative pressure in the hearth are quickly recovered and stabilized, and the operation safety of the whole power generation system is guaranteed.
Preferably, the system is a DCS control system.
The specific working principle is as follows:
example 1:
a primary air fan and fan hydraulic cylinder fault automatic detection and emergency processing system adopts the following steps:
s1: the monitoring system monitors the running condition of the primary air fan and preliminarily monitors whether the primary air fan runs normally or not;
s2: the method comprises the steps that data of operation of all parts of a primary air fan, which are obtained by a monitoring system, are collected and then fed back and transmitted to an analysis system in real time, and the analysis system obtains real-time primary air fan current data and primary air fan air outlet pressure data and processes the data by the analysis system;
s3: the analysis system judges whether the operation data of the primary air fan fed back by the comparison monitoring system accords with preset judgment parameter values or not, different preset judgment parameter values need to be adjusted and set for different fan models, and the working state of the primary air fan hydraulic cylinder is judged to be in normal operation or in a fault state through the preset judgment parameter values. And comparing the real-time operation data of the primary air fan with preset judgment parameter values and analyzing the operation by an analysis system, and comprehensively obtaining the working state of the hydraulic cylinder of the primary air fan.
S4, judging the working state of the primary air fan hydraulic cylinder according to the S3 analysis system, feeding the working state back to the control system, enabling the control system to quickly respond, and sending regulation and control instructions to the induced draft fan and the primary air fan on the opposite side in time, wherein the regulation and control instructions comprise normal operation instructions or switching regulation instructions, so that the induced draft fan and the primary air fan on the opposite side can quickly respond, sufficient regulation time is strived for operation operators, and the air pressure of the air supply system is stabilized within safe operation time;
and when the primary fan current data and the outlet pressure data are under the preset judgment parameter values, judging that the primary fan hydraulic cylinder is in a normal working state, maintaining the normal operation of the air supply system, and repeatedly operating S1.
When primary air fan current data and outlet pressure data exceed preset judgment parameter values, a primary air fan hydraulic cylinder is judged to be in a fault working state, a switching adjustment instruction is sent to an induced draft fan and an opposite-side primary air fan, the opposite-side air fan is sent to be switched to manual control, the system operation state can be maintained through rapid manual adjustment, when the primary air fan is tripped due to overhigh current, a static blade opening and closing adjustment instruction is sent to the induced draft fan immediately, a movable blade adjustment instruction is sent to the opposite-side primary air fan, the opening degree of the static blade of the induced draft fan is reduced, the opening degree of the movable blade of the opposite-side air fan is increased simultaneously, after the induced draft fan and the opposite-side primary air fan are adjusted, a movable blade automatic adjustment instruction is sent to the opposite-side primary air fan according to a preset delay time value, and the opposite-side primary air fan movable blade is set to be in an automatic adjustment state.
S5: after the induced draft fan and the contralateral primary air fan are switched and adjusted, the automatic air supply system adjustment and the access are carried out by the control system, the air pressure of the primary air fan and the negative pressure of the hearth are automatically adjusted to a preset stable value by the control system, the air pressure of the primary air supply system and the negative pressure in the hearth are quickly recovered and stabilized, the operation safety of the whole power generation system is guaranteed, and the air pressure of the primary air fan is automatically adjusted by the control system and is robbed back to the system.
Example 2:
a primary air fan and fan hydraulic cylinder fault automatic detection and emergency processing system adopts the following steps:
s1: the monitoring system monitors the running condition of the primary air fan and preliminarily monitors whether the primary air fan runs normally or not;
s2: the method comprises the steps that data of operation of all parts of a primary air fan, which are obtained by a monitoring system, are collected and then fed back and transmitted to an analysis system in real time, and the analysis system obtains real-time primary air fan current data and primary air fan air outlet pressure data and processes the data by the analysis system;
s3: the analysis system judges whether the operation data of the primary air fan fed back by the comparison monitoring system accords with preset judgment parameter values, and the preset judgment parameter values of the primary air fan current data and the outlet pressure data of the primary air fan are as follows: the primary fan current is preferably 380A and the primary fan outlet pressure is preferably 13 Kpa. And adjusting preset judgment parameter values for different fan models.
And judging whether the working state of the primary fan hydraulic cylinder is normal operation or in a fault state by presetting the judgment parameter value. And comparing the real-time operation data of the primary air fan with preset judgment parameter values and analyzing the operation by an analysis system, and comprehensively obtaining the working state of the hydraulic cylinder of the primary air fan.
S4: judging the working state of a primary air fan hydraulic cylinder according to an S3 analysis system, feeding the working state back to a control system, enabling the control system to quickly respond, and sending regulation and control instructions to an induced draft fan and an opposite-side primary air fan in time, wherein the regulation and control instructions comprise normal operation instructions or switching regulation instructions, so that the induced draft fan and the opposite-side primary air fan can quickly respond, enough regulation time is strived for operation operators, and the air pressure of an air supply system is stabilized within safe operation time;
and when the primary fan current data and the outlet pressure data are under the preset judgment parameter values, judging that the primary fan hydraulic cylinder is in a normal working state, maintaining the normal operation of the air supply system, and repeatedly operating S1.
When primary air fan current data and outlet pressure data exceed preset judgment parameter values, a primary air fan hydraulic cylinder is judged to be in a fault working state, a switching adjustment instruction is sent to an induced draft fan and an opposite-side primary air fan, the opposite-side air fan is sent to be switched to be manually controlled, the system operation state can be maintained through rapid manual adjustment, when the primary air fan is tripped due to overhigh current, a static blade opening and closing adjustment instruction is sent to the induced draft fan immediately, a movable blade adjustment instruction is sent to the opposite-side primary air fan, the static blade closing of the induced draft fan is reduced by 5% of opening, meanwhile, the opposite-side air fan movable blades are increased by 5% of opening, after the induced draft fan and the opposite-side primary air fan are adjusted, a movable blade automatic adjustment instruction is sent to the opposite-side primary air fan according to a preset delay time value, and the opposite-side primary air fan movable blades are set to be in an automatic adjustment state.
The access of the invention is beneficial to detecting the operation condition of the primary air fan hydraulic cylinder in time, and the control system automatically carries out emergency treatment when a fault occurs, thereby reducing the difficulty of operation adjustment and gaining reaction time for subsequent manual intervention adjustment.
S5: after the induced draft fan and the contralateral primary air fan are switched and adjusted, the automatic air supply system adjustment and the access are carried out by the control system, the air pressure of the primary air fan and the negative pressure of the hearth are automatically adjusted to a preset stable value by the control system, the air pressure of the primary air supply system and the negative pressure in the hearth are quickly recovered and stabilized, the operation safety of the whole power generation system is guaranteed, and the air pressure of the primary air fan is automatically adjusted by the control system and is robbed back to the system.
The invention realizes that the fault of the hydraulic cylinder of the primary fan is pre-judged in advance, the opposite side fan and the induced fan are automatically adjusted in time, the serious consequences of unit tripping or boiler furnace implosion and the like caused by over-high negative pressure of the furnace chamber after the fault fan trips are avoided, and the normal operation of the power generation system is effectively ensured.
Further, the system is a DCS control system.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. The utility model provides a primary air fan and fan pneumatic cylinder trouble automated inspection and emergency treatment system which characterized in that, includes the following step:
s1: the monitoring system monitors the running condition of the primary air fan;
s2: the analysis system acquires feedback primary air fan operation data;
s3: the analysis system judges the working state of the primary air fan hydraulic cylinder by comparing whether the operation data of the primary air fan fed back by the monitoring system accords with a preset judgment parameter value;
s4: judging the working state of the primary air fan hydraulic cylinder according to an S3 analysis system, and sending a normal operation instruction or a switching adjustment instruction to the induced draft fan and the primary air fan on the opposite side;
s5: and after the induced draft fan and the opposite side primary air fan are switched and adjusted, the induced draft fan and the opposite side primary air fan are switched to be automatically adjusted and connected by the control system.
2. The system of claim 1, wherein the operational data of the primary air fan obtained in step S2 includes primary air fan current data and primary air fan outlet pressure data.
3. The system for automatically detecting and emergently processing the faults of the primary air fan and the hydraulic cylinder of the primary air fan as claimed in claim 1, wherein the S3 is used for judging the working state of the hydraulic cylinder of the primary air fan according to the preset judgment parameter values:
when the primary fan current data and the outlet pressure data are under preset judgment parameter values, judging that the primary fan hydraulic cylinder is in a normal working state;
and when the current data and the outlet pressure data of the primary fan exceed the preset judgment parameter values, judging that the hydraulic cylinder of the primary fan is in a fault working state.
4. The automatic primary air fan and hydraulic cylinder failure detection and emergency treatment system of claim 3, wherein when the hydraulic cylinder of the primary air fan is determined to be in a normal working state in S3, the normal operation of the air supply system is maintained, and the operation is repeated in S1.
5. The automatic primary air fan and fan hydraulic cylinder fault detection and emergency treatment system according to claim 3, wherein when the primary air fan hydraulic cylinder is judged to be in a fault working state at S3, a switching adjustment instruction is sent to the induced draft fan and the primary air fan on the opposite side.
6. The system of claim 5, wherein the switching adjustment command is:
the method is characterized in that the opposite side fan is switched to manual control, when the current is too high, tripping is caused, a static blade opening and closing adjusting instruction is immediately sent to the induced draft fan, a movable blade adjusting instruction is sent to the opposite side primary fan, and a movable blade automatic adjusting instruction is sent to the opposite side primary fan according to a preset delay time value.
7. The system of claim 6, wherein the induced draft fan sends out a stationary blade opening and closing adjustment command to reduce the opening of the stationary blade by 5%, and the opposite-side primary fan sends out a movable blade adjustment command to increase the opening of the movable blade by 5%.
8. The system of claim 3, wherein the preset judgment parameter values of the primary fan current data and the outlet pressure data are as follows: the primary fan current is 380A, and the primary fan air outlet pressure is 13 Kpa.
9. The automatic primary air fan and fan hydraulic cylinder fault detection and emergency treatment system of claim 1, wherein the S5 control system performs automatic adjustment of the air supply system, and the control system automatically adjusts the air pressure of the primary air fan and the negative pressure of the furnace chamber to preset stable values.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113775552A (en) * | 2021-09-30 | 2021-12-10 | 华能太仓发电有限责任公司 | Method for prejudging broken pin of movable blade of fan |
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