CN116538120A - Tunnel ventilator health degree assessment method and system - Google Patents
Tunnel ventilator health degree assessment method and system Download PDFInfo
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- CN116538120A CN116538120A CN202310517298.2A CN202310517298A CN116538120A CN 116538120 A CN116538120 A CN 116538120A CN 202310517298 A CN202310517298 A CN 202310517298A CN 116538120 A CN116538120 A CN 116538120A
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 230000010365 information processing Effects 0.000 claims description 20
- 238000012423 maintenance Methods 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 3
- 238000012549 training Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 description 9
- 239000000779 smoke Substances 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
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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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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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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
-
- 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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Abstract
The invention discloses a method and a system for evaluating the health degree of a tunnel ventilator, wherein the method comprises the following steps: s1: setting the health state grade of a ventilator; s2: counting the average value and peak value of fan characteristic parameters under different running frequencies in multiple periods; s3: setting allowable value phimax of current envelope line superposition degree phi between three phases, and setting sampling time interval T m The method comprises the steps of carrying out a first treatment on the surface of the When phi is larger than or equal to phi max, the burning alarm is carried out; when phi is<Executing S4 when phi max is the same; s4: calculating single-parameter health degree h of fan x The method comprises the steps of carrying out a first treatment on the surface of the S5: setting the weight of the characteristic parameter x, and calculating the multi-parameter health degree h of the fan; s6: and defining the health state of the ventilator according to the health degree h calculated in the step S5 and the health state grade of the ventilator set in the step S1. The invention can prompt the manager to conduct abnormal treatment in time, greatly reduces the possibility of burning out the fan and is suitable for enteringOne-step popularization and application.
Description
Technical Field
The invention relates to the technical field of tunnel ventilators, in particular to a method and a system for evaluating the health degree of a tunnel ventilator.
Background
Tunnels have become an integral part of urban highways as a rapid traverse of mountain bodies. With the rapid development of national economy, the number of underground tunnel construction in China and the tunnel length are continuously increased. These tunnels also present many hidden hazards while solving traffic: during the running process of automobiles, a great deal of oxygen is consumed, and a great deal of exhaust gas such as CO is discharged 2 CO, nitrogen oxides, etc., and the tunnel is a relatively sealed space, if these gases cannot be immediately exhausted, adverse effects will be generated to the human body; moreover, the exhaust gas discharged by the vehicle often contains some solid particles, and when the concentration of the solid particles in the tunnel is high, the visibility is reduced, so that the driving safety of a driver is influenced; meanwhile, the tunnel is used as a relatively sealed space, and only natural wind is relied on for oxygen supplement, so that the treatment of waste gas often cannot reach the expected effect; in addition, the tunnel is characterized by long and narrow space, and once a fire disaster occurs in the tunnel, a large amount of generated smoke threatens personnel to escape, influences a fire disaster rescue route, and prevents rescue personnel from reaching and helping wounded persons. It is therefore important to design fans in the tunnel to assist in ventilation of the tunnel. The ventilation system mainly completes ventilation in the tunnel, realizes air quality control and temperature control in the tunnel, and ensures traffic operation safety. Therefore, high requirements are put on the safety of the ventilation fan, and the working state of the fan must be ensured.
In the prior art solutions, the following aspects are focused on the tunnel safety ventilation:
1) The safety monitoring system is installed in the tunnel to detect the whole condition in the tunnel to ensure the operation safety of the tunnel.
For example, a smart city tunnel security monitoring system is proposed in the patent application number cn202210033733. X; the utility model provides a visual subway tunnel safety integrated monitoring and intelligent emergency system of 202011369455.2 patent application number.
2) And controlling the safe energy-saving ventilation system.
For example, a control method of a highway tunnel safety energy-saving ventilation system is proposed in the patent application number CN202010196482.8, and a fan is regulated and controlled. A control method of a tunnel fire extinguishing system and a smoke discharging system, which are proposed by the patent application number CN202210717741.6, and relates to a control system for extinguishing a tunnel fire and discharging smoke. A pressurized air supply system for a safe evacuation channel is proposed by the application number CN 202110747356.1.
3) And (5) tunnel safety pre-warning and monitoring.
For example, an expressway tunnel safety pre-warning system is proposed in the patent application number CN 202220742244.7. A tunnel safety detection device for dust content in buildings is proposed by the patent application number CN 202123035209.6.
The researches are used for rapid, accurate positioning and effective diagnosis of various disasters of the tunnel, so that related operators such as scheduling and the like can timely treat the disasters, and guarantee is provided for tunnel operation safety. However, the above researches are based on the good condition of the tunnel ventilation system, that is to say, the ventilation system can be regulated, monitored and pre-warned on the basis that the ventilator (smoke exhaust fan) can be regulated in normal operation. And when the safety monitoring system generates dangerous situations, passive services such as alarm, positioning and the like are sent out. How to pointedly evaluate and early warn the health degree of the ventilator (smoke exhaust fan), and to realize the active reminding and arrangement of the maintenance and replacement of the ventilator (smoke exhaust fan), the method becomes an urgent engineering problem to be solved.
Through engineering investigation, most of problems of the tunnel fan are concentrated on the burning of the motor, and the main reasons for the burning are as follows: the fan bearing vibrates, the motor lacks looks and the fan locks, causes the motor overheated. Bearing vibration relates to vibration caused by unbalance of dust accumulation of an impeller and vibration caused by loosening of a mounting bolt; the motor phase failure includes: when the motor is started, the phase is lost, and the motor cannot start the winding current of the motor to be 5-7 times of the rated current. The heating value is 15-50 times of the normal temperature rise, and the motor is burnt out due to the fact that the heating value rapidly exceeds the allowable temperature rise; when the motor is full-load, the phase is lost, the motor is in an overcurrent state, namely the current exceeds the rated current, the motor can be changed from fatigue to locked-rotor, and the line current without phase interruption is increased more, so that the motor is burnt out rapidly; when the phase of the motor is broken in light load operation, the current of the winding without phase interruption is rapidly increased, so that the winding of the phase is burnt out due to overhigh temperature rise; the fan locking is caused by poor oil quality of lubricating oil or no lubrication, so that the dry friction temperature rises sharply, and the expansion amount of the balls is larger than the bearing clearance to lock. In addition, these system failures are characterized by multiple, repetitive, and complex characteristics. How to realize the health assessment of the ventilator by a plurality of necessary hardware facilities and a scientific calculation assessment method, and realize the active reminding of the maintenance and replacement of the ventilator (smoke exhaust fan). Therefore, the invention provides a method and a system for evaluating the health degree of a tunnel ventilator.
Disclosure of Invention
Aiming at the technical problems, the invention provides a method and a system for evaluating the health degree of a tunnel ventilator, which are used for scientifically analyzing and evaluating by collecting necessary operation parameters, giving out health degree evaluation and carrying out early warning and suggestion on related faults by combining existing maintenance information.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a tunnel ventilator health assessment method, comprising:
s1: setting the health state grade of a ventilator;
s2: counting the average value and peak value of fan characteristic parameters under different running frequencies in multiple periods;
s3: setting allowable value phimax of current envelope line superposition degree phi between three phases, and setting sampling time interval T m The method comprises the steps of carrying out a first treatment on the surface of the When phi is larger than or equal to phi max, the burning alarm is carried out; when phi is<Executing S4 when phi max is the same;
s4: calculating single-parameter health degree h of fan x ；
Wherein f x，t Is based on single feature of fanMeasurement of the parameter x at time t, f p And f max Mean value and peak value of single characteristic parameter x based on fan;
s5: setting the weight of the characteristic parameter x, and calculating the multi-parameter health degree h of the fan;
wherein m is the number of characteristic parameters; ρ x Is the weight of the characteristic parameter x, and is more than or equal to 0 and less than or equal to ρ x Is less than or equal to 1, and
s6: and defining the health state of the ventilator according to the health degree h calculated in the step S5 and the health state grade of the ventilator set in the step S1.
Further, the method further comprises the following steps: and displaying the calculation results of the multi-parameter health degree h of the fan, the single-parameter health degree hx of the fan and the health state of the fan in a graph form, and displaying the treatment suggestion of the single-parameter influence hidden danger by combining the existing maintenance information.
Further, S1 is specifically:
considering the timeliness of the operation of the device, the reference health h is classified into five classes:
shutdown (h.gtoreq.0.85), scheduled maintenance (0.65.ltoreq.h < 0.85), unhealthy (0.35.ltoreq.h < 0.65), sub-healthy (0.20.ltoreq.h < 0.35), healthy (0.ltoreq.h < 0.20).
Further, S2 is specifically:
the method comprises the steps of counting current I, voltage U, motor rotating speed V, sound level S, motor bearing temperature T and outlet wind speed W of a fan at different operating frequencies in multiple periods to serve as training samples, calculating a current average value Ip, a voltage average value Up, a motor rotating speed average value Vp, a sound level average value Sp, a motor bearing temperature average value Tp and an outlet wind speed average value Wp of the fan at the I frequency, and counting a current peak value Imax, a voltage peak value Umax, a motor rotating speed peak value Vmax, a sound level peak value Smax, a motor bearing temperature peak value Tmax and an outlet wind speed peak value Wmax of the fan at the I frequency.
Further, the Φ expression in S3 is as follows:
wherein j and k represent different phase groups, and ω represents a phase angle;
i represents different operating frequencies.
Further, the burning alarm in S3 specifically comprises:
and (5) carrying out power-off shutdown alarm and connecting and disconnecting a circuit of the related fan.
Further, ρ in S5 x And determining according to the probability statistics of fan fault maintenance.
The invention also provides a system for evaluating the health degree of the tunnel ventilator, which comprises the following steps:
the motor rotating speed sensor is arranged on a rotating shaft of the motor and used for acquiring rotating speed data of the motor;
sound level sensors which are arranged at the front, the back, the left and the right of the motor and above the center of the motor and are used for acquiring decibel data when the motor runs;
the temperature sensor is arranged on the motor bearing and used for acquiring temperature data of the motor bearing;
the wind speed sensor is arranged at the air outlet of the fan and is used for acquiring wind speed data of the air outlet;
the current sensor is arranged on a main inlet line of the control cabinet of the ventilator and is used for acquiring current data of the ventilator;
the voltage sensor is arranged on a bus entry line of a control cabinet of the ventilator and is used for acquiring voltage data of the ventilator;
the alarm unit comprises an alarm bell and an alarm module, wherein the alarm bell is arranged on the outer surface of the ventilator and used for giving an alarm; the alarm module is used for displaying the fault position; the alarm bell and the alarm module are electrically connected with the information processing unit;
the information processing unit is loaded with the method for evaluating the health degree of the tunnel ventilator and is used for carrying out storage analysis on the data acquired by each sensor and controlling the alarm unit and the ventilator to carry out corresponding operation under the condition of meeting the preset condition;
the display unit is electrically connected with the information processing unit and is used for displaying the relevant data result calculated and analyzed by the information processing unit and the processing suggestion of the single parameter influence hidden danger;
the sensors are connected with the information processing unit through a 4G/5G interface or a local area network.
Further, the information processing unit calculates and analyzes the related data result including: the fan multi-parameter health degree h, the fan single-parameter health degree hx and the health state of the ventilator.
Preferably, the information processing unit calculates and analyzes the related data result and displays the related data result in a form of a chart in the display unit.
Compared with the prior art, the invention has the following beneficial effects:
according to the operation characteristics of the tunnel fan, the invention considers the frequent variable frequency operation of the fan system and hidden danger caused to the safety of the fan, and provides a method and a system for evaluating the health of the tunnel fan, which have the following advantages:
1) According to the invention, by setting the burning alarm, setting the alarm bell and the alarm module capable of displaying the fault position in the control center, and timely prompting the manager to perform abnormal treatment, the possibility of burning the fan is greatly reduced;
2) According to the method, the potential safety hazard can be conveniently and rapidly found according to the analysis of the single-parameter health degree of the fan, and the early warning purpose is achieved.
3) The invention intuitively displays the multi-parameter health degree h of the fan by using a chart, realizes the active maintenance and replacement of the fan (the smoke exhaust fan), and greatly reduces the test time of fan inspection;
4) The invention has simple setting system, can realize on-line detection and has huge engineering value.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for evaluating the health of a tunnel ventilator in the present invention;
FIG. 2 is a schematic diagram of a system for evaluating the health of a tunnel ventilator according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is specifically noted that the following examples are only for illustrating the present invention, but do not limit the scope of the present invention. Likewise, the following examples are only some, but not all, of the examples of the present invention, and all other examples, which a person of ordinary skill in the art would obtain without making any inventive effort, are within the scope of the present invention.
Referring to fig. 1, in a certain tunnel, the ventilator is an SDF (B) -NO9.6 type multistage variable speed fan, and the scheme provides a method for evaluating the health of the tunnel ventilator, which is applied to the fan, and by collecting necessary operation parameters, analyzing and evaluating, combining existing maintenance information, providing health evaluation, and being capable of carrying out early warning and suggestion on potential safety hazards formed by phase failure, fan bearing operation failure and fan impeller installation failure, the method comprises the following steps:
s1: setting the health status grade of the ventilator. The method comprises the following steps: considering the timeliness of the operation of the device, the reference health h is classified into five classes:
shutdown (h.gtoreq.0.85), scheduled maintenance (0.65.ltoreq.h < 0.85), unhealthy (0.35.ltoreq.h < 0.65), sub-healthy (0.20.ltoreq.h < 0.35), healthy (0.ltoreq.h < 0.20).
S2: counting the average value and peak value of fan characteristic parameters under different running frequencies in multiple periods; the method comprises the following steps:
the method comprises the steps of counting current I, voltage U, motor rotating speed V, sound level S, motor bearing temperature T and outlet wind speed W of a fan at different operating frequencies in multiple periods to serve as training samples, calculating a current average value Ip, a voltage average value Up, a motor rotating speed average value Vp, a sound level average value Sp, a motor bearing temperature average value Tp and an outlet wind speed average value Wp of the fan at the I frequency, and counting a current peak value Imax, a voltage peak value Umax, a motor rotating speed peak value Vmax, a sound level peak value Smax, a motor bearing temperature peak value Tmax and an outlet wind speed peak value Wmax of the fan at the I frequency. The relevant characteristic parameters of the ventilator are shown in the following table 1:
TABLE 1
S3: setting allowable value phimax of current envelope line superposition degree phi between three phases, and setting sampling time interval T m The method comprises the steps of carrying out a first treatment on the surface of the Wherein, Φ expression is as follows:
wherein j and k represent different phase groups, and ω represents a phase angle;
i represents different operating frequencies; when phi is larger than or equal to phi max, the burning alarm is carried out, namely the power-off shutdown alarm is carried out, and the circuit of the related fan is turned off in a parallel mode; when phi is<Executing S4 when phi max is the same; for 50Hz power frequency operation, the allowable value Φmax=10a of the current envelope contact ratio Φ between the three phases, the current envelope contact ratio Φ=3a between the three phases at the moment of measurement, and no alarm is given in this example.
S4: calculating single-parameter health degree h of fan x ；
Wherein f x，t For measuring value based on single characteristic parameter x of fan at time t, f p And f max Is the average value and peak value of a single characteristic parameter x based on the fan. Health degree h of each single parameter of fan x The details are shown in table 2 below:
TABLE 2
S5: setting the weight of the characteristic parameter x, and calculating the multi-parameter health degree h of the fan;
wherein m is the number of characteristic parameters; ρ x Is the weight of the characteristic parameter x, and is more than or equal to 0 and less than or equal to ρ x Is less than or equal to 1, and
wherein ρ is x And determining according to the probability statistics of fan fault maintenance.
S6: and defining the health state of the ventilator according to the health degree h calculated in the step S5 and the health state grade of the ventilator set in the step S1.
S7: the multi-parameter health degree h of the fan, the calculation result of the single-parameter health degree hx of the fan and the health state of the fan are displayed in a chart form, and the existing maintenance information is combined to display the treatment suggestion of the single-parameter influence hidden danger, so that technical guidance and assistance are given to management staff. The details are shown in table 3 below:
TABLE 3 Table 3
Referring to fig. 2, the system for evaluating the health degree of a tunnel ventilator provided by the present embodiment includes:
the motor rotating speed sensor is arranged on a rotating shaft of the motor and used for acquiring rotating speed data of the motor;
sound level sensors which are arranged at the front, the back, the left and the right of the motor and above the center of the motor and are used for acquiring decibel data when the motor runs; as the geometric size of the fan is not more than 800, the number of the sound level sensors 4 is 4 according to the approximate free field engineering method, the sound level sensors are arranged in 4 directions which are perpendicular to each other in the front-back, left-right and right directions of the fan, and the test radius is 0.4m.
The temperature sensor is arranged on the motor bearing and used for acquiring temperature data of the motor bearing;
the wind speed sensor is arranged at the air outlet of the fan and is used for acquiring wind speed data of the air outlet;
the current sensor is arranged on a main inlet line of the control cabinet of the ventilator and is used for acquiring current data of the ventilator;
the voltage sensor is arranged on a bus entry line of a control cabinet of the ventilator and is used for acquiring voltage data of the ventilator;
the alarm unit comprises an alarm bell and an alarm module, wherein the alarm bell is arranged on the outer surface of the ventilator and used for giving an alarm; the alarm module is arranged in the control center and used for displaying the fault position in the control center; the alarm bell and the alarm module are electrically connected with the information processing unit;
the information processing unit is loaded with the method for evaluating the health degree of the tunnel ventilator and is used for carrying out storage analysis on the data acquired by each sensor and controlling the alarm unit and the ventilator to carry out corresponding operation under the condition that the preset condition is met;
the display unit is electrically connected with the information processing unit and is used for displaying related data results (the data results comprise a calculation result of the fan multi-parameter health degree h, the fan single-parameter health degree hx and the health state of the fan) calculated and analyzed by the information processing unit and processing suggestions of single-parameter influence hidden dangers in a chart form; the information processing unit and the display unit can be arranged on the original control platform in a centralized mode.
All the sensors are detachable and are connected with the information processing unit through a 4G/5G interface or a local area network.
The foregoing description is only a partial embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent devices or equivalent processes using the descriptions and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (10)
1. A method for evaluating the health of a tunnel ventilator, comprising:
s1: setting the health state grade of a ventilator;
s2: counting the average value and peak value of fan characteristic parameters under different running frequencies in multiple periods;
s3: setting allowable value phimax of current envelope line superposition degree phi between three phases, and setting sampling time interval T m The method comprises the steps of carrying out a first treatment on the surface of the When phi is larger than or equal to phi max, the burning alarm is carried out; when phi is<Executing S4 when phi max is the same;
s4: calculating single-parameter health degree h of fan x ；
Wherein f x，t For measuring value based on single characteristic parameter x of fan at time t, f p And f max Mean value and peak value of single characteristic parameter x based on fan;
s5: setting the weight of the characteristic parameter x, and calculating the multi-parameter health degree h of the fan;
wherein m is the number of characteristic parameters; ρ x Is the weight of the characteristic parameter x, and is more than or equal to 0 and less than or equal to ρ x Is less than or equal to 1, and
s6: and defining the health state of the ventilator according to the health degree h calculated in the step S5 and the health state grade of the ventilator set in the step S1.
2. The tunnel ventilator health assessment method of claim 1, further comprising: and displaying the calculation results of the multi-parameter health degree h of the fan, the single-parameter health degree hx of the fan and the health state of the fan in a graph form, and displaying the treatment suggestion of the single-parameter influence hidden danger by combining the existing maintenance information.
3. The method for evaluating the health of a tunnel ventilator according to claim 1, wherein S1 is specifically:
considering the timeliness of the operation of the device, the reference health h is classified into five classes:
shutdown (h.gtoreq.0.85), scheduled maintenance (0.65.ltoreq.h < 0.85), unhealthy (0.35.ltoreq.h < 0.65), sub-healthy (0.20.ltoreq.h < 0.35), healthy (0.ltoreq.h < 0.20).
4. The method for evaluating the health of a tunnel ventilator according to claim 1, wherein S2 is specifically:
the method comprises the steps of counting current I, voltage U, motor rotating speed V, sound level S, motor bearing temperature T and outlet wind speed W of a fan at different operating frequencies in multiple periods to serve as training samples, calculating a current average value Ip, a voltage average value Up, a motor rotating speed average value Vp, a sound level average value Sp, a motor bearing temperature average value Tp and an outlet wind speed average value Wp of the fan at the I frequency, and counting a current peak value Imax, a voltage peak value Umax, a motor rotating speed peak value Vmax, a sound level peak value Smax, a motor bearing temperature peak value Tmax and an outlet wind speed peak value Wmax of the fan at the I frequency.
5. The method for evaluating the health of a tunnel ventilator according to claim 1, wherein the Φ expression in S3 is as follows:
wherein j and k represent different phase groups, and ω represents a phase angle;
i represents different operating frequencies.
6. The method for evaluating the health degree of a tunnel ventilator according to claim 1, wherein the burning alarm in S3 specifically comprises:
and (5) carrying out power-off shutdown alarm and connecting and disconnecting a circuit of the related fan.
7. The method for evaluating the health of a tunnel ventilator according to claim 1, wherein ρ in S5 x And determining according to the probability statistics of fan fault maintenance.
8. A tunnel ventilator health assessment system, comprising:
the motor rotating speed sensor is arranged on a rotating shaft of the motor and used for acquiring rotating speed data of the motor;
sound level sensors which are arranged at the front, the back, the left and the right of the motor and above the center of the motor and are used for acquiring decibel data when the motor runs;
the temperature sensor is arranged on the motor bearing and used for acquiring temperature data of the motor bearing;
the wind speed sensor is arranged at the air outlet of the fan and is used for acquiring wind speed data of the air outlet;
the current sensor is arranged on a main inlet line of the control cabinet of the ventilator and is used for acquiring current data of the ventilator;
the voltage sensor is arranged on a bus entry line of a control cabinet of the ventilator and is used for acquiring voltage data of the ventilator;
the alarm unit comprises an alarm bell and an alarm module, wherein the alarm bell is arranged on the outer surface of the ventilator and used for giving an alarm; the alarm module is used for displaying the fault position; the alarm bell and the alarm module are electrically connected with the information processing unit;
an information processing unit loaded with the method for evaluating the health of the tunnel ventilator according to any one of claims 1 to 7, for performing storage analysis on the data acquired by the sensors and controlling the alarm unit and the ventilator to perform corresponding operations under the condition that the preset condition is satisfied;
the display unit is electrically connected with the information processing unit and is used for displaying the relevant data result calculated and analyzed by the information processing unit and the processing suggestion of the single parameter influence hidden danger;
the sensors are connected with the information processing unit through a 4G/5G interface or a local area network.
9. The tunnel ventilator health assessment system of claim 8, wherein the information processing unit calculates the analyzed data related results comprising: the fan multi-parameter health degree h, the fan single-parameter health degree hx and the health state of the ventilator.
10. The tunnel ventilator health assessment system of claim 9, wherein the information processing unit calculates the analyzed data related results to be graphically displayed in a display unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118030491A (en) * | 2024-04-12 | 2024-05-14 | 上海海维工业控制有限公司 | Constant displacement pump throttle valve control system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118030491A (en) * | 2024-04-12 | 2024-05-14 | 上海海维工业控制有限公司 | Constant displacement pump throttle valve control system and method |
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