CN111287914A - Fan monitoring device and method - Google Patents
Fan monitoring device and method Download PDFInfo
- Publication number
- CN111287914A CN111287914A CN202010212363.7A CN202010212363A CN111287914A CN 111287914 A CN111287914 A CN 111287914A CN 202010212363 A CN202010212363 A CN 202010212363A CN 111287914 A CN111287914 A CN 111287914A
- Authority
- CN
- China
- Prior art keywords
- fan
- circuit
- pressure
- fan body
- value
- 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.)
- Pending
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
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
Abstract
The embodiment of the invention provides a fan monitoring device and a method, wherein the fan monitoring device comprises a fan body and further comprises: the current acquisition circuit is connected with the fan body and is used for acquiring a fan current value of the fan body; the pressure sensor is arranged on the air outlet side of the fan body and used for acquiring the pressure value of the air outlet side of the fan body; the controller is electrically connected with the current acquisition circuit and the pressure sensor; and the warning device is electrically connected with the controller. The embodiment of the invention can monitor the fault state of the fan body losing the output power, can still give an alarm for the fault state of the lost output power even under the condition that the fan body integrally rotates normally, and effectively improves the fault monitoring effect on the fan body.
Description
Technical Field
The invention relates to the technical field of power generation, in particular to a fan monitoring device and method.
Background
The fan is one of the more common equipment in the technical field of power generation, and can play a role in air supply in application occasions such as thermal power generation and the like. In the prior art, monitoring of the fan is usually only to monitor whether the fan normally rotates, and in the case that some fans normally rotate but actually lose output power, the monitoring result of the fan may still be normal.
For example, some current fans adopt a structure of a movable blade, that is, the angle of the blade of the fan can be adjusted to meet the requirements of different air supply flow rates. When the fan normally rotates and the movable blades are closed due to faults, the fan loses output, namely air supply cannot be continued, but the monitoring result can still show that the fan normally works. Therefore, the defect of poor monitoring effect exists in the existing fan monitoring mode.
Disclosure of Invention
The embodiment of the invention provides fan monitoring equipment and method, aiming at solving the problem that the existing fan monitoring mode has the defect of poor monitoring effect.
In order to solve the technical problem, the invention is realized as follows:
the embodiment of the invention provides fan monitoring equipment, which comprises a fan body, and the fan monitoring equipment also comprises:
the current acquisition circuit is connected with the fan body and is used for acquiring a fan current value of the fan body;
the pressure sensor is arranged on the air outlet side of the fan body and used for acquiring the pressure value of the air outlet side of the fan body;
the controller is electrically connected with the current acquisition circuit and the pressure sensor;
and the warning device is electrically connected with the controller.
The embodiment of the invention also provides a fan monitoring method, which comprises the following steps:
acquiring a fan current value of the fan body and a pressure value of an air outlet side of the fan body;
and generating an alarm signal according to the fan current value and the pressure value, wherein the alarm signal is used for controlling the running state of an alarm device.
In the embodiment of the invention, the current acquisition circuit is arranged to acquire the fan current value of the fan body, the pressure sensor is arranged to acquire the pressure value of the air outlet side of the fan body, and the current acquisition circuit and the pressure sensor are both electrically connected to the controller, so that the controller can judge whether the fan body is in a fault state of losing output according to the fan current value and the pressure value and can correspondingly alarm the fault state through the alarm device; the embodiment of the invention can monitor the fault state of the fan body losing the output power, can still give an alarm for the fault state of the lost output power even under the condition that the fan body integrally rotates normally, and effectively improves the fault monitoring effect on the fan body.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural diagram of a fan monitoring device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a fan monitoring device provided in an embodiment of the present invention in an application embodiment;
fig. 3 is a flowchart of a fan monitoring method according to an embodiment of the present invention.
The figures show that: the fan comprises a fan body 110, a current collecting circuit 120, a pressure sensor 130, a first pressure sensor 131, a second pressure sensor 132, a controller 140, a first comparison circuit 141, a second comparison circuit 142, a driving circuit 143, an AND gate circuit 144, an alarm device 150, an operation state monitoring circuit 160 and a baffle structure 170.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1, the blower monitoring device provided in the embodiment of the present invention includes a blower body 110, and:
the current collecting circuit 120 is connected with the fan body 110, and is used for obtaining a fan current value of the fan body 110;
the pressure sensor 130 is arranged on the air outlet side of the fan body 110, and is used for acquiring a pressure value of the air outlet side of the fan body 110;
a controller 140, wherein the controller 140 is electrically connected to the current collecting circuit 120 and the pressure sensor 130;
an alarm device 150, wherein the alarm device 150 is electrically connected with the controller 140.
In this embodiment, the current collecting circuit may be a circuit structure including an electronic component such as a current sensor, and may be configured to collect a current value of the fan body 110 during operation, that is, the fan current value. The pressure sensor 130 is used for collecting the pressure value of the air outlet side of the fan.
The controller 140 is electrically connected to the current collecting circuit 120 and the pressure sensor 130, and can be used for receiving the fan current value and the pressure value. Further, the controller 140 can also generate an alarm signal according to the fan current value and the pressure value, and the alarm signal can be used to control the operating state of the alarm device 150. The alarm device 150 may be an audible and visual alarm device, or may be other devices capable of generating an alarm prompt.
In one example, the controller 140 may compare the fan current value with a current threshold value after receiving the fan current value and the pressure value, compare the pressure value with a pressure threshold value, and generate an alarm signal when the fan current value is less than or equal to the current threshold value and the pressure value is less than or equal to the pressure threshold value, where the alarm signal can control the alarm device 150 to generate a corresponding alarm prompt.
In the embodiment of the invention, the current acquisition circuit is arranged to acquire the fan current value of the fan body, the pressure sensor is arranged to acquire the pressure value of the air outlet side of the fan body, and the current acquisition circuit and the pressure sensor are both electrically connected to the controller, so that the controller can judge whether the fan body is in a fault state of losing output according to the fan current value and the pressure value and can correspondingly alarm the fault state through the alarm device; the embodiment of the invention can monitor the fault state of the fan body losing the output power, can still give an alarm for the fault state of the lost output power even under the condition that the fan body integrally rotates normally, and effectively improves the fault monitoring effect on the fan body.
In combination with a specific application embodiment, during a normal rotation process of the fan body 110 having the movable blades, a fan current value (hereinafter referred to as a movable blade closing current value) and a pressure value (hereinafter referred to as a movable blade closing pressure value) on the air outlet side, which correspond to when all the movable blades are closed, are generally smaller than a fan current value (hereinafter referred to as a movable blade opening current value) and a pressure value (hereinafter referred to as a movable blade opening pressure value) on the air outlet side, which correspond to when the movable blades are opened, respectively. Therefore, by reasonably setting the current threshold and the pressure threshold, for example, the current threshold is equal to or slightly greater than the movable blade closing current value, and the pressure threshold is equal to or slightly greater than the movable blade closing pressure value, the controller 140 can determine that the fan body 110 is in the state of losing the output when the fan current value is less than or equal to the current threshold and the pressure value on the air outlet side is less than or equal to the pressure threshold, and output a corresponding alarm signal. The current value and the pressure value of the fan are respectively compared with corresponding threshold values, and the two comparison results are simultaneously used as judgment bases of fault states, so that various interference factors can be eliminated, and the fault states such as loss of output power can be accurately identified.
In order to realize the comparison between the fan current value and the fan pressure value and the corresponding threshold, in this embodiment, the controller 140 includes a first comparison circuit 141, a second comparison circuit 142, and a driving circuit 143;
a first input end of the first comparing circuit 141 is connected to the current collecting circuit 120, a second input end of the first comparing circuit 141 is a current threshold input end, and an output end of the first comparing circuit 141 is connected to a first input end of the driving circuit 143; a first input end of the second comparison circuit 142 is connected to the pressure sensor 130, a second input end of the second comparison circuit 142 is a first pressure threshold input end, and an output end of the second comparison circuit 142 is connected to a second input end of the driving circuit 143; the output terminal of the driving circuit 143 is connected to the alarm device 150.
The first comparison circuit 141 includes two input terminals respectively for receiving the fan current value and the current threshold value collected by the current collection circuit 120, and outputting a first comparison result. Similarly, the second comparing circuit 142 includes two input terminals for receiving the pressure value collected by the pressure sensor 130 and the pressure threshold value, respectively, and outputting a second comparison result. The driving circuit 143 may receive the first comparison result and the second comparison result, and output a corresponding alarm signal according to the comparison result.
For example, when the first comparison result corresponds to that the fan current value is smaller than the current threshold, and the second comparison result corresponds to that the pressure value is smaller than the pressure threshold, the driving circuit 143 outputs an alarm signal according to the two comparison results, so as to drive the alarm device 150 to issue a corresponding alarm prompt, so as to remind the user that the fan body 110 may be in a failure state of losing output.
Optionally, the fan monitoring device further includes an operating condition monitoring circuit 160, the operating condition monitoring circuit 160 is configured to obtain an operating condition of the fan body 110, and the operating condition monitoring circuit 160 is electrically connected to the controller 140.
In this embodiment, the operation state monitoring circuit 160 may monitor the operation state of the blower body 110, for example, monitor whether the blower body 110 is in a rotation state. By providing the operating state monitoring circuit 160, the following effects can be further obtained: firstly, the overall operation state of the fan body 110 can be acquired, so as to further judge whether an overall operation fault exists, for example, whether the fan body 110 is in a rotation state; secondly, when the whole fan body 110 operates normally, whether the fan body 110 has special faults such as output loss can be further judged according to the fan current value and the pressure value.
Optionally, in a case that the number of the blower body 110 is multiple, the controller 140 further includes an and circuit 144;
the and gate circuit 144 includes a plurality of input terminals, and the plurality of operation state monitoring circuits 160 corresponding to the plurality of fan bodies 110 are respectively connected to the plurality of input terminals included in the and gate circuit 144; an output terminal of the and circuit 144 is connected to a third input terminal of the driving circuit 143.
In this embodiment, in consideration of an application scenario in which a plurality of fan bodies 110 cooperate, an operation state monitoring circuit 160 is respectively provided for each fan body 110; the monitoring results of the plurality of operation state monitoring circuits 160 are input into the and circuit 144 for processing, and if at least one fan body 110 does not operate, for example, the fan body 110 does not rotate, the result output by the and circuit 144 corresponds to that the fan body 110 does not operate, and an overall operation fault may occur.
Optionally, the fan monitoring device further includes a fan outlet pipeline disposed on the air outlet side of the fan body 110;
the number of the fan bodies 110 is one or more; under the condition that the number of the fan bodies 110 is multiple, multiple fan outlet pipelines corresponding to the fan bodies 110 are communicated with each other.
In the embodiment, the fan outlet pipeline is arranged, so that corresponding media can be effectively conveyed to a target position; and when the quantity of fan body 110 is a plurality of, with a plurality of fan outlet pipeline intercommunications that correspond, can promote fan body 110 collaborative work's effect.
In one example, the blower body 110 and corresponding blower outlet duct may be a duct that delivers air, fuel, etc. to the boiler combustion chamber; the outlet pipelines of the fans are communicated with each other to form a communication main pipe.
Optionally, the pressure sensor 130 comprises a first pressure sensor 131 and/or a second pressure sensor 132; the first pressure sensor 131 is disposed at the air outlet of the blower body 110, and the second pressure sensor 132 is disposed in the blower outlet pipeline;
when the number of the pressure sensors 130 and the number of the second comparison circuits 142 are both multiple, the multiple pressure sensors 130 are respectively connected to the first input terminals of the multiple second comparison circuits 142, and the output terminals of the multiple second comparison circuits 142 are respectively connected to the multiple second input terminals included in the driving circuit 143.
In this embodiment, the position of the pressure sensor 130 may be selected according to actual needs, and may be set at the air outlet of the blower body 110, or may be set in the blower outlet duct, or may be set at both positions, which is helpful to provide flexibility in installing the pressure sensor 130.
Referring to fig. 2, in one example, a second pressure sensor 132 is provided in the blower outlet duct at the same time as a first pressure sensor 131 is provided at the outlet of the blower body 110. Accordingly, the pressure value inputted by each pressure sensor 130 is respectively sent to the first input terminal of the corresponding second comparing circuit 142; that is, a plurality of second comparison circuits 142 may be provided. For convenience of illustration, the second comparator 142 connected to the first pressure sensor 131 is defined as a first sub-comparator circuit, and the second comparator 142 connected to the second pressure sensor 132 is defined as a second sub-comparator circuit, wherein the input of the second input terminal of the first sub-comparator circuit is a first pressure threshold, and the input of the second input terminal of the second sub-comparator circuit is a second pressure threshold. In practical applications, the first pressure threshold and the second pressure threshold may be equal or different.
Optionally, a baffle structure 170 is disposed in the fan outlet duct; the baffle structure 170 can open or close a passage in the fan outlet duct.
In this embodiment, each blower body 110 may be respectively configured with a baffle structure 170, and the baffle structure 170 may be capable of opening or closing the passage of the corresponding blower outlet duct. When the blower body 110 normally operates, the baffle structure 170 may open the channel, and when the blower body 110 has an overall fault or a special fault such as a loss of output occurs, the baffle structure 170 corresponding to the blower body 110 may close the channel.
Through the arrangement of the baffle plate structure 170, when the fan body 110 fails, the passage of the fan outlet pipeline corresponding to the fan body 110 is closed, and under the condition that a plurality of fan bodies 110 work in cooperation, the medium pumped by other fans working normally can be prevented from being discharged from the failed fan body 110, so that the adverse effect caused by the failure of the fan body 110 is reduced.
The following describes the fan monitoring device provided in the embodiment of the present invention with reference to a specific application embodiment:
the large-scale fan of general thermal power factory parallel operation all is equipped with the female pipe of contact, can dispose an contact door respectively for each fan in the female pipe of contact to set up the protection of fan trouble tripping operation even close fan export baffle, that is to say, under the condition that the monitoring broke down when the fan body, the baffle structure of control contact door was closed. If the detection is only carried out on whether the fan is wholly failed, for example, whether the fan normally rotates, when the fan suddenly loses output force in the operation process and the fan does not trip, the baffle structure of the contact door cannot be closed normally at the moment. The primary air generated by other fans working normally is exhausted through the communication door corresponding to the fault fan, so that the primary air pressure is reduced rapidly, and the boiler is flameout and stopped due to combustion deterioration.
Based on the use of the fan monitoring equipment in the above embodiments, it is possible to identify a special fault state such as a loss of fan output. Further, in this application embodiment, when a special fault state is identified, an audible and visual alarm may be performed on a Distributed Control System (DCS) image, and an instruction is output to connect a main pipe connection door of the fan, so as to prevent wind of other fans working normally from being discharged from the side of the faulty fan. The boiler is prevented from flameout due to sudden drop of the air pressure, and meanwhile, operating personnel can find out a fault fan in time, so that timely processing is facilitated, and flameout and shutdown are avoided.
Referring to fig. 2, the determination that any one of the fans (denoted as fan a) is in the fault state of losing output may be that the following conditions are simultaneously satisfied:
1. a plurality of fan bodies are all in an operating state (hereinafter referred to as condition 1);
2. the fan current value of the fan a is lower than a current threshold (hereinafter referred to as condition 2);
3. communicating the pressure value in the main pipe, namely the second pressure value is lower than a second pressure threshold value (hereinafter referred to as condition 3);
4. a pressure value of an air outlet of the fan a, that is, the first pressure value is lower than a first pressure threshold (hereinafter referred to as a condition 4);
the current threshold value can be a fan current value when the movable blades are fully closed in the fan test; the second pressure threshold value can be the pressure in the communication main pipe when the movable blades of the fan A are completely closed and other fans normally operate; the first pressure threshold may be a pressure in an air outlet of the fan a when the movable blades of the fan a are all closed and the remaining fans are operating normally.
Optionally, the first pressure threshold and the second pressure threshold may take the same value; of course, the current threshold, the first pressure threshold and the second pressure threshold may be adjusted according to actual needs.
Referring to fig. 2, in some possible embodiments, the above condition 1 acquisition may be implemented based on an And gate (i.e., an shown in the figure); the acquisition of the conditions 2, 3, 4 may be realized based on a Comparator (Comparator, corresponding to Cmp shown in the figure); the determination of a failed out-of-force fault condition may be based on Qor8 in DCS, where Qor8 may be interpreted as a qualified or (8 inputs) for monitoring the status of less than 8 digital inputs and generating a corresponding output signal based on the number of inputs having a logic 1 status being less than, equal to, or greater than a specified logic 1 number. The main functions of the fan monitoring method can be realized in DCS logic, no measuring point and equipment are required to be added, the cost is saved, and the implementation is convenient.
As shown in fig. 3, an embodiment of the present invention further provides a fan monitoring method, including:
301, acquiring a fan current value of a fan body and a pressure value of an air outlet side of the fan body;
In this embodiment, the fan current value may be obtained by collecting the operating current of the fan body through, for example, a current collecting circuit, and the pressure value on the air outlet side of the fan body may be obtained by collecting the pressure sensor on the air outlet side of the fan body.
In practical application, the fault of the fan body can be not only the integral fault that the fan body cannot rotate, but also a special fault that the fan body loses output due to the fact that the movable blades are closed. In the embodiment of the invention, the fan current value of the fan body and the pressure value of the air outlet side are simultaneously used as the basis for generating the alarm signal in consideration of the possible failure of losing the output power, so that the identification capability of the failure state of the fan body can be effectively improved, and the failure monitoring effect is improved. In addition, the generated alarm signal can be used for further controlling the alarm device to give an alarm, so that the fault state can be prompted, and a user can find and process the fault of the fan body in time.
In one example, the warning signal is generated when the fan current value is less than or equal to the current threshold and the pressure value is less than or equal to the pressure threshold.
In combination with a specific application embodiment, in a normal rotation process of a fan body having movable blades, a fan current value (hereinafter referred to as a movable blade closing current value) and a pressure value (hereinafter referred to as a movable blade closing pressure value) on an air outlet side, which correspond to when all the movable blades are closed, are generally smaller than a fan current value (hereinafter referred to as a movable blade opening current value) and a pressure value (hereinafter referred to as a movable blade opening pressure value) on an air outlet side, which correspond to when the movable blades are opened, respectively. Therefore, by reasonably setting the current threshold and the pressure threshold, for example, the current threshold is equal to or slightly greater than the movable blade closing current value, and the pressure threshold is equal to or slightly greater than the movable blade closing pressure value, an alarm signal is generated when the fan current value is less than or equal to the current threshold and the pressure value on the air outlet side is less than or equal to the pressure threshold, so as to further prompt that the fan body has a fault of losing the output through the alarm device.
Of course, considering that there may be a situation of cooperative work of multiple fan bodies, the current threshold and the pressure threshold may be adjusted according to actual needs, for example, for the pressure threshold of a certain fan body, the movable blade of the fan body may be closed, and when other fan bodies work normally, the pressure value of the air outlet side of the fan body is set.
In this example, when the current value of the fan is less than or equal to the current threshold value and the pressure value is less than or equal to the pressure threshold value, an alarm signal is generated, which is helpful for eliminating various interference factors and accurately identifying the fault states such as the loss of output.
Of course, in some possible embodiments, other types of alarm signals may be generated according to the fan current value and the pressure value. For example, when the fan current value is higher than another current threshold value, an alarm signal for controlling an alarm device to prompt that the fan body may be over-current is generated, and the like.
In other possible embodiments, the warning signal may also be used to control to close a baffle structure, where the baffle structure is disposed in the fan outlet duct on the air outlet side of the fan body and is used to open or close a channel in the fan outlet duct.
Optionally, in order to further improve the accuracy of identifying the fault state such as the loss of output of the fan body, in step 301, obtaining the pressure value of the air outlet side of the fan body includes:
acquiring a first pressure value of an air outlet of the fan body and a second pressure value in a fan outlet pipeline arranged on the air outlet side of the fan body;
and generating an alarm signal under the condition that the fan current value is less than or equal to a current threshold value, the first pressure value is less than or equal to a first pressure threshold value, and the second pressure value is less than or equal to a second pressure threshold value.
Alternatively, the first pressure threshold and the second pressure threshold may be equal, and of course, in practical applications, the two types of pressure thresholds may also be set as needed.
Optionally, the wind turbine monitoring method further includes: acquiring the running state of the fan body;
and generating an alarm signal according to the running state of the fan body, the current value of the fan and the pressure value.
The running state of the fan body can be represented as whether the fan body is in a rotating state or not. When the running state of the fan body is abnormal, for example, the fan body is not rotating, an overall running fault may occur; and when the running state of the fan body is normal, but the current value and the pressure value of the fan are abnormal, whether the fan body has special faults such as output loss and the like can be further judged, and a corresponding alarm signal is generated. Therefore, according to the fan body monitoring method and device, the alarm signal is generated according to the running state of the fan body, the current value of the fan and the pressure value of the fan body, the monitoring range of the fault type of the fan body is favorably expanded, and the fan body monitoring effect is improved.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. The utility model provides a fan monitoring facilities, includes the fan body, its characterized in that, fan monitoring facilities still includes:
the current acquisition circuit is connected with the fan body and is used for acquiring a fan current value of the fan body;
the pressure sensor is arranged on the air outlet side of the fan body and used for acquiring the pressure value of the air outlet side of the fan body;
the controller is electrically connected with the current acquisition circuit and the pressure sensor;
and the warning device is electrically connected with the controller.
2. The fan monitoring apparatus of claim 1, wherein the controller comprises a first comparison circuit, a second comparison circuit, and a drive circuit;
a first input end of the first comparison circuit is connected with the current acquisition circuit, a second input end of the first comparison circuit is a current threshold input end, and an output end of the first comparison circuit is connected with a first input end of the driving circuit; a first input end of the second comparison circuit is connected with the pressure sensor, a second input end of the second comparison circuit is a first pressure threshold input end, and an output end of the second comparison circuit is connected with a second input end of the driving circuit; the output end of the driving circuit is connected with the alarm device.
3. The fan monitoring device according to claim 2, further comprising an operating condition monitoring circuit, wherein the operating condition monitoring circuit is configured to obtain an operating condition of the fan body, and the operating condition monitoring circuit is electrically connected to the controller.
4. The blower monitoring device of claim 3, wherein, in the event that the number of blower bodies is multiple, the controller further comprises an AND gate circuit;
the AND gate circuit comprises a plurality of input ends, and a plurality of running state monitoring circuits corresponding to the plurality of fan bodies are respectively connected with the plurality of input ends of the AND gate circuit; and the output end of the AND gate circuit is connected with the third input end of the driving circuit.
5. The fan monitoring device according to claim 2, further comprising a fan outlet duct disposed on an air outlet side of the fan body;
the number of the fan bodies is one or more; the blower comprises a blower body, a plurality of blower outlet pipelines and a plurality of blower outlet pipelines, wherein the blower outlet pipelines are communicated with one another.
6. The fan monitoring device of claim 5, wherein the pressure sensor comprises a first pressure sensor and/or a second pressure sensor; the first pressure sensor is arranged at an air outlet of the fan body, and the second pressure sensor is arranged in the fan outlet pipeline;
under the condition that the number of the pressure sensors and the number of the second comparison circuits are both multiple, the multiple pressure sensors are respectively connected with the first input ends of the multiple second comparison circuits, and the output ends of the multiple second comparison circuits are respectively connected with the second input ends of the driving circuit.
7. The fan monitoring device of claim 5, wherein a baffle structure is disposed in the fan outlet duct; the baffle structure can open or close a passage in the fan outlet duct.
8. A fan monitoring method is characterized by comprising the following steps:
acquiring a fan current value of the fan body and a pressure value of an air outlet side of the fan body;
and generating an alarm signal according to the fan current value and the pressure value, wherein the alarm signal is used for controlling the running state of an alarm device.
9. The method of claim 8, wherein the obtaining the pressure value of the air outlet side of the blower body comprises:
acquiring a first pressure value of an air outlet of the fan body and a second pressure value in a fan outlet pipeline arranged on the air outlet side of the fan body;
generating an alarm signal according to the fan current value and the pressure value, wherein the generating of the alarm signal comprises the following steps:
and generating an alarm signal under the condition that the fan current value is less than or equal to a current threshold value, the first pressure value is less than or equal to a first pressure threshold value, and the second pressure value is less than or equal to a second pressure threshold value.
10. The method of claim 8, further comprising: acquiring the running state of the fan body;
generating an alarm signal according to the fan current value and the pressure value, wherein the generating of the alarm signal comprises the following steps:
and generating an alarm signal according to the running state of the fan body, the current value of the fan and the pressure value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010212363.7A CN111287914A (en) | 2020-03-24 | 2020-03-24 | Fan monitoring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010212363.7A CN111287914A (en) | 2020-03-24 | 2020-03-24 | Fan monitoring device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111287914A true CN111287914A (en) | 2020-06-16 |
Family
ID=71028216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010212363.7A Pending CN111287914A (en) | 2020-03-24 | 2020-03-24 | Fan monitoring device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111287914A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115719655A (en) * | 2022-11-21 | 2023-02-28 | 华能山东石岛湾核电有限公司 | Device and method for high-temperature gas cooled reactor primary helium fan baffle test |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4506338A (en) * | 1980-11-27 | 1985-03-19 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Method and apparatus for judging the state of operation of an intake passage pressure detecting device for an engine |
| ES2137070A1 (en) * | 1996-02-01 | 1999-12-01 | Gas Natural Sdg S A | Forced-extraction system with safety/security locking for gas-powered water heaters |
| JP2002098088A (en) * | 2000-09-21 | 2002-04-05 | Mitsubishi Electric Corp | Blower device and driving device for fluid force-feeder |
| CA2422510A1 (en) * | 2002-03-18 | 2003-09-18 | Adc Dsl Systems, Inc. | Temperature and barometric responsive fan system |
| US20050066672A1 (en) * | 2003-09-25 | 2005-03-31 | Kabushiki Kaisha Toshiba | Electronic apparatus that allows cooling fan to be driven with certainty even at the time of software malfunction/lock-up or at the time of controller failure |
| CN201593449U (en) * | 2010-01-13 | 2010-09-29 | 中铁隧道集团有限公司 | Sensor for failure of tunnel ventilation pipeline and on/off of air blower |
| CN203784997U (en) * | 2014-04-01 | 2014-08-20 | 大唐华银电力股份有限公司金竹山火力发电分公司 | Device for monitoring opening and closing state of baffle plate at outlet of primary air blower fan in power plant |
| US20140262134A1 (en) * | 2013-03-15 | 2014-09-18 | Emerson Electric Co. | Hvac system remote monitoring and diagnosis |
| CN104265666A (en) * | 2014-08-29 | 2015-01-07 | 武汉钢铁(集团)公司 | Method for preventing surging of fans |
| CN206075106U (en) * | 2016-08-04 | 2017-04-05 | 苏州云白环境设备股份有限公司 | A kind of lampblack fan plugged filter supervising device |
| KR20170069034A (en) * | 2015-12-10 | 2017-06-20 | (주)퓨리셈 | Fan monitoring system |
| CN107061338A (en) * | 2017-05-27 | 2017-08-18 | 山东罗泰风机有限公司 | A kind of fan condition real-time monitoring system |
| CN107255268A (en) * | 2017-05-31 | 2017-10-17 | 上海明华电力技术工程有限公司 | A kind of primary air fan RB control methods based on primary air fan system state monitoring |
| CN211900884U (en) * | 2020-03-24 | 2020-11-10 | 大唐贵州发耳发电有限公司 | Fan monitoring equipment |
-
2020
- 2020-03-24 CN CN202010212363.7A patent/CN111287914A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4506338A (en) * | 1980-11-27 | 1985-03-19 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Method and apparatus for judging the state of operation of an intake passage pressure detecting device for an engine |
| ES2137070A1 (en) * | 1996-02-01 | 1999-12-01 | Gas Natural Sdg S A | Forced-extraction system with safety/security locking for gas-powered water heaters |
| JP2002098088A (en) * | 2000-09-21 | 2002-04-05 | Mitsubishi Electric Corp | Blower device and driving device for fluid force-feeder |
| CA2422510A1 (en) * | 2002-03-18 | 2003-09-18 | Adc Dsl Systems, Inc. | Temperature and barometric responsive fan system |
| US20050066672A1 (en) * | 2003-09-25 | 2005-03-31 | Kabushiki Kaisha Toshiba | Electronic apparatus that allows cooling fan to be driven with certainty even at the time of software malfunction/lock-up or at the time of controller failure |
| CN201593449U (en) * | 2010-01-13 | 2010-09-29 | 中铁隧道集团有限公司 | Sensor for failure of tunnel ventilation pipeline and on/off of air blower |
| US20140262134A1 (en) * | 2013-03-15 | 2014-09-18 | Emerson Electric Co. | Hvac system remote monitoring and diagnosis |
| CN203784997U (en) * | 2014-04-01 | 2014-08-20 | 大唐华银电力股份有限公司金竹山火力发电分公司 | Device for monitoring opening and closing state of baffle plate at outlet of primary air blower fan in power plant |
| CN104265666A (en) * | 2014-08-29 | 2015-01-07 | 武汉钢铁(集团)公司 | Method for preventing surging of fans |
| KR20170069034A (en) * | 2015-12-10 | 2017-06-20 | (주)퓨리셈 | Fan monitoring system |
| CN206075106U (en) * | 2016-08-04 | 2017-04-05 | 苏州云白环境设备股份有限公司 | A kind of lampblack fan plugged filter supervising device |
| CN107061338A (en) * | 2017-05-27 | 2017-08-18 | 山东罗泰风机有限公司 | A kind of fan condition real-time monitoring system |
| CN107255268A (en) * | 2017-05-31 | 2017-10-17 | 上海明华电力技术工程有限公司 | A kind of primary air fan RB control methods based on primary air fan system state monitoring |
| CN211900884U (en) * | 2020-03-24 | 2020-11-10 | 大唐贵州发耳发电有限公司 | Fan monitoring equipment |
Non-Patent Citations (1)
| Title |
|---|
| 杨飞;: "火电厂轴流风机典型故障原因及应急处置方法", 神华科技, no. 12 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN115719655A (en) * | 2022-11-21 | 2023-02-28 | 华能山东石岛湾核电有限公司 | Device and method for high-temperature gas cooled reactor primary helium fan baffle test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110600773B (en) | Method and apparatus for diagnosing failure of air supply system in fuel cell system | |
| WO2022233278A1 (en) | Online monitoring method and system for hydrogen fuel cell stack, and hydrogen fuel cell vehicle using monitoring method | |
| CN102032650B (en) | Air conditioner monitoring system | |
| CN111287914A (en) | Fan monitoring device and method | |
| US7509189B2 (en) | Turbo machinery speed monitor | |
| CN111029624B (en) | System and method for on-line monitoring and recovering water state of fuel cell | |
| CN110500710A (en) | A kind of air-conditioning fault self-diagnosis method | |
| KR101824223B1 (en) | A cooling fan monitering system for electrical room of photovoltaic power station | |
| CN112339973A (en) | Positive and negative pressure fast switching control system and method for ship cabin | |
| CN108547694B (en) | Detection method, detection device and detection system of electromagnetic fan | |
| CN211900884U (en) | Fan monitoring equipment | |
| CN109143063B (en) | Detection device and method for high-low voltage switch of air conditioner | |
| CN104763576B (en) | A kind of pump-storage generator protection auxiliary signal anomalous discrimination and modification method | |
| CN112432387B (en) | Oil return control method and device of air conditioning system and air conditioning system | |
| CN111059696B (en) | Power module temperature detection control method, computer readable storage medium and air conditioner | |
| CN107102633B (en) | A kind of distribution terminal fault self-diagnosis method and system | |
| CN113007870B (en) | Air conditioner detection method, device and system | |
| CN209165690U (en) | The fault detection system and air conditioner of air-conditioner set axial flow blower | |
| CN110686358B (en) | Variable frequency air conditioner fault diagnosis method based on detection tool | |
| CN102927027A (en) | Reverse flow protective method for blast furnace blower | |
| CN109455190B (en) | Train ventilation system, energy storage power supply flue gas monitoring method and system and storage medium | |
| CN113589024A (en) | Method and device for rapidly detecting single set of abnormal alternating voltage measurement of redundant system | |
| CN106762450B (en) | Air heat exchanger leakage detection system and method and wind driven generator | |
| CN108152727A (en) | A kind of multistage reverse-blocking tetrode thyristor and fault detect and alarm system | |
| CN201221828Y (en) | Air conditioner fault alarming circuit |
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 |