CN108931277B - Method for detecting total leakage of compressed air system of textile mill - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 239000004753 textile Substances 0.000 title claims abstract description 31
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- 238000007906 compression Methods 0.000 claims abstract description 21
- 238000009987 spinning Methods 0.000 claims description 13
- 238000009941 weaving Methods 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 7
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- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/07—Integration to give total flow, e.g. using mechanically-operated integrating mechanism
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- G—PHYSICS
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- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
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Abstract
The invention discloses a method for detecting the total leakage of a compressed air system of a textile mill, which comprises the steps of firstly detecting the total leakage of the compressed air system at an air compression station, then detecting the leakage of each device in each workshop and summing up, if the sum of the leakage of each device in each workshop is less than or equal to the total leakage or the difference between the leakage of each device in each workshop is less than or equal to 5%, determining that the detected total leakage and the leakage of each device in each workshop are effective data, if the sum of the leakage of each device in each workshop is more than the total leakage or the difference between the leakage of each device in each workshop is more than 5%, detecting the total leakage of the compressed air system and the leakage of each device in each workshop again at the air compression station, and calculating again until the sum of the leakage of each device in each workshop is less than or equal to the total leakage or the difference between the leakage of each device. The method for detecting the total leakage of the compressed air system of the textile mill can reasonably and accurately detect the total leakage of the compressed air system.
Description
Technical Field
The invention belongs to the technical field of leakage detection methods of compressed air systems, and relates to a method for detecting the total leakage of a compressed air system of a textile mill.
Background
Compressed air has many advantages such as safety, nuisanceless, regulation performance is good, transport is convenient, has become one of the most widely used power source in the industrial field at present, and compressed air is also one of the most expensive energy source simultaneously, and its energy consumption accounts for about 30% to 40% of total energy consumption in most factories, even up to 50%.
With the improvement of the automation degree of spinning, the use of compressed air in textile mills is more and more common. Compressed air consumption of air jet looms, automatic winders, automatic doffers and other equipment is large and gradually increased year by year, and an air compression station becomes a second energy consumption great household of a spinning workshop.
Leakage is a common waste phenomenon in a compressed air system of a textile mill and mainly occurs at various positions of a filter, a pressure regulating box, a weft accumulator, an air path, an electromagnetic valve, a threaded connection, a pipe network node and the like. Leakage amounts often account for 20% to 40% of the gas production of the system, and poorly managed plants may even be as high as 50%. Taking a small hole with a hole diameter of 4.5mm as an example, under the condition that the air supply pressure of a pipeline is 0.6MPa (gauge pressure), the electric charge paid by an enterprise for compressed air leaked from the small hole in one year reaches 31200 yuan (the annual operating time of the system is 8000h, and the price of the electric charge is 0.6 yuan/(kW · h)), besides energy waste, the system leakage can cause other operating losses, such as pressure drop, low-efficiency operation of a pneumatic tool, adverse effects on production, pressure drop, more frequent work of driving equipment, service life of system equipment (including an air compressor unit), additional maintenance requirements due to increase of the operating time of the air compressor can be caused, extra shutdown time outside planning can be increased, and more importantly, unnecessary increase of the capacity of the air compressor due to leakage can cause increase of the operating cost of the air compressor.
Therefore, the accurate evaluation of the leakage condition of the compressed air system of the textile enterprise has important significance for improving the operation efficiency of the compressed air system, improving the air supply reliability of the system and reducing the unit consumption of products.
Disclosure of Invention
The invention aims to provide a method for detecting the total leakage of a compressed air system of a textile mill, which can reasonably and accurately detect the total leakage of the compressed air system and effectively help textile enterprises to correctly evaluate the leakage condition of the compressed air system of the textile mill.
The invention adopts the technical scheme that a method for detecting the total leakage of a compressed air system of a textile mill comprises the steps of firstly detecting the total leakage of the compressed air system at an air compression station, then detecting the leakage amount of each device in each workshop, adding the leakage amounts of each device in each workshop, if the sum of the leakage amount of each device in each workshop is less than or equal to the total leakage amount or the difference between the leakage amount and the total leakage amount is less than or equal to 5 percent, the total leakage amount and the leakage amount of each device in each workshop are considered to be valid data, if the sum of the leakage amounts of each device in each workshop is larger than the total leakage amount or the difference between the two leakage amounts is larger than 5 percent, and detecting the total leakage amount of the compressed air system and the leakage amount of each device in each workshop again at the air compression station, and calculating again until the sum of the leakage amounts of each device in each workshop is less than or equal to the total leakage amount or the difference between the leakage amounts of each device in each workshop is less than or equal to 5%.
The present invention is also characterized in that,
the specific method for detecting the total leakage amount of the compressed air system in the air compression station comprises the following steps:
step one, during the period of production stoppage of a textile mill, operating an air compressor with loading and unloading functions, and calculating the volume flow Q of the air compressor under the standard conditiona(m3/min)；
Step two, recording the total running time t of the air compressorGeneral assembly(min), identifying the loading and unloading time period of the air compressor by using the intelligent power meter, and calculating to obtain the loading operation time t of the air compressorLoading(min)；
Step three, calculating the total leakage amount of the compressed air system
In the step one, the volume flow Q of the air compressor under the standard condition is calculatedaThe specific method comprises the following steps: when a flow meter or a flow sensor is preset at the outlet of the air compressor, the volume flow Q under the actual working condition of the air compressor is directly read on the flow meter or the flow sensorWorking conditionsVolume flow Q of air compressor under standard conditionaComprises the following steps:
wherein Q isaVolume flow (m) of air compressor under standard condition3/min)，QWorking conditionsShows the volume flow (m) of the air compressor under the actual working condition3/min)，PWorking conditionsIndicating the air pressure (kPa), P at the outlet of the air compressor under actual conditionsgRepresenting the local actual atmospheric pressure (kPa), TWorking conditionsThe air temperature (deg.c) at the outlet of the air compressor under actual conditions is shown.
In the step one, the volume flow Q of the air compressor under the standard condition is calculatedaThe specific method comprises the following steps: when the outlet of the air compressor is not provided with a preset flow meter or a flow sensor, the actual air flow rate at the inlet of the air compressor is detected by using the impeller anemometer, and then the volume flow Q under the actual working condition of the air compressor is calculatedWorking conditions：Q Working conditions60 · S · v, wherein QWorking conditionsShows the volume flow (m) of the air compressor under the actual working condition3Min), S represents the area of the air compressor inlet duct (m)2) And v represents the air flow rate (m/s) at the inlet of the air compressor under the actual working condition detected by the impeller anemometer, so that the volume flow Q of the air compressor under the standard conditionaComprises the following steps:
wherein, TgThe temperature (DEG C) of air at the inlet of the air compressor under the actual working condition is shown, and P isgRepresenting the local actual atmospheric pressure (kPa).
In the second step, the loading and unloading time period of the air compressor is identified by using the intelligent power meter, and the loading operation time t of the air compressor is calculatedLoading(min) specifically comprises: the method comprises the steps of reading and recording the power of the air compressor in real time by using an intelligent power meter with a communication function, establishing a real-time operation power curve graph of the air compressor, and if the total operation time of the air compressor is t1To t11And then:
tgeneral assembly＝t11-t1
tLoading＝(t2-t1)+(t4-t3)+(t6-t5)+(t8-t7)+(t10-t9)
Wherein, tGeneral assemblyIndicates the total running time (min), t, of the air compressorLoadingIndicates the loading operation time (min), t of the air compressor1，t3，t5，t7，t9，t11Respectively indicating the starting time t of the loading operation of the air compressor2，t4，t6，t8，t10Respectively representing the initial moment of the unloading operation of the air compressor.
When the total leakage of the compressed air system is detected, the total leakage is detected for multiple times by using a plurality of air compressors in the air compression station respectively, and then the average value is taken as the total leakage of the air compression system.
The method for detecting the leakage amount of each device in each workshop mainly comprises the detection of the leakage amount of an air pressure cradle and an automatic doffer in a spinning workshop, an automatic winder in a winding workshop and an air jet loom in a weaving workshop.
When the leakage amount of each device in each workshop is detected, the leakage detector is connected in parallel with the idle interface of the device to detect the compressed air leakage amount of the device.
When the leakage of each device in each workshop is detected, the leakage of each device is measured for many times and averaged to be taken as the leakage of the device, and the leakage of each type of device in the workshop is added to be the compressed air leakage of the whole workshop.
And an ultrasonic scanning gun and a thermal infrared imager are used for positioning and analyzing leakage, an air pressure cradle and an automatic doffer in a spinning workshop, an automatic winder in a winding workshop and an air jet loom in a weaving workshop are respectively detected, and the position of the detected leakage point is marked.
The invention has the beneficial effects that:
the invention aims at the problem of compressed air leakage of a textile factory, firstly detects the total leakage amount of a compressed air system from the whole to the part at an air compression station, then detects the compressed air leakage of each device in each workshop, accurately evaluates the whole leakage condition by analyzing the detection result and combining the characteristics of the textile factory, recognizes the leakage to the textile enterprise, and further has important significance for reducing and eliminating the leakage to meet the energy-saving requirement.
Drawings
FIG. 1 is a flow chart of a method for detecting total leakage of a compressed air system of a textile mill according to the present invention;
fig. 2 is a real-time operation power curve diagram of the air compressor established by the invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a method for detecting the total leakage of a compressed air system of a textile mill, the flow of which is shown in figure 1, firstly detecting the total leakage of the compressed air system at an air compression station, then detecting the leakage amount of each device in each workshop, adding the leakage amounts of each device in each workshop, if the sum of the leakage amount of each device in each workshop is less than or equal to the total leakage amount or the difference between the leakage amount and the total leakage amount is less than or equal to 5 percent, the total leakage amount and the leakage amount of each device in each workshop are considered to be valid data, if the sum of the leakage amounts of each device in each workshop is larger than the total leakage amount or the difference between the two leakage amounts is larger than 5 percent, and detecting the total leakage amount of the compressed air system and the leakage amount of each device in each workshop again at the air compression station, and calculating again until the sum of the leakage amounts of each device in each workshop is less than or equal to the total leakage amount or the difference between the leakage amounts of each device in each workshop is less than or equal to 5%.
The specific method for detecting the total leakage amount of the compressed air system in the air compression station comprises the following steps:
step one, during the period of production stoppage of a textile mill, operating an air compressor with loading and unloading functions, and calculating the volume flow Q of the air compressor under the standard conditiona(m3/min)；
Wherein the volume flow Q of the air compressor under standard conditions is calculatedaThe specific method comprises the following steps: when a flow meter or a flow sensor is preset at the outlet of the air compressor, the volume flow Q under the actual working condition of the air compressor is directly read on the flow meter or the flow sensorWorking conditionsVolume flow Q of air compressor under standard conditionaComprises the following steps:
wherein Q isaVolume flow (m) of air compressor under standard condition3/min)，QWorking conditionsShows the volume flow (m) of the air compressor under the actual working condition3/min)，PWorking conditionsIndicating the air pressure (kPa), P at the outlet of the air compressor under actual conditionsgRepresenting the local actual atmospheric pressure (kPa), TWorking conditionsThe temperature (DEG C) of air at an outlet of the air compressor under the actual working condition is represented;
when no preset flow meter or flow sensor is arranged at the outlet of the air compressor, the leakage amount of the system can be evaluated by a method for detecting the real-time power of the air compressor and the air flow at the inlet of the air compressor, the air compressor with the loading and unloading functions is operated, the pipeline of the compressed air system is filled with air in the loading and operation of the air compressor, the power of the air compressor is continuously increased until the pressure of the air storage tank reaches the set unloading air pressure, the air compressor is unloaded and operated, the power of the air compressor is continuously reduced until the air compressor stably operates, the pressure of the air storage tank is continuously reduced due to leakage in the pipeline, when the pressure is lower than the set loading pressure, the air compressor is loaded and. In the loading and unloading process of the air compressor, the leakage amount of the compressed air system is equal to the air amount filled into a pipeline of the compressed air system in the loading process of the air compressor, so the total leakage amount of the compressed air system can be calculated by detecting the loading operation time of the air compressor and the air flow at an inlet of the air compressor.
When the outlet of the air compressor is not provided with a preset flow meter or a flow sensor, the actual air flow rate at the inlet of the air compressor is detected by using the impeller anemometer, and then the volume flow Q under the actual working condition of the air compressor is calculatedWorking conditions：Q Working conditions60 · S · v, wherein QWorking conditionsShows the volume flow (m) of the air compressor under the actual working condition3Min), S represents the area of the air compressor inlet duct (m)2) And v represents the air flow rate (m/s) of the air compressor at the inlet under the actual working condition detected by an impeller anemometer, because the air flow rate in the pipeline is not uniform, a plurality of measuring points are selected on the cross section of the air compressor at the inlet for measuring when the air flow rate is measured, the average value is taken as the air flow rate of the air compressor at the inlet, and the volume flow Q of the air compressor under the standard condition is obtainedaComprises the following steps:
wherein, TgThe temperature (DEG C) of air at the inlet of the air compressor under the actual working condition is shown, and P isgRepresenting the local actual atmospheric pressure (kPa).
Step two, recording the total running time t of the air compressorGeneral assembly(min), identifying the loading and unloading time period of the air compressor by using the intelligent power meter, and calculating to obtain the loading operation time t of the air compressorLoading(min)；
The loading and unloading time period of the air compressor is identified by the Qi-brand intelligent power meter with the model number of KKDW9C01, and the loading and unloading running time t of the air compressor is calculatedLoading(min) specifically comprises: the method comprises the steps of using an intelligent power meter with a communication function to read and record the power of the air compressor in real time, building a real-time operation power curve graph of the air compressor as shown in figure 2, and if the total operation time of the air compressor is t1To t11And then:
tgeneral assembly＝t11-t1
tLoading＝(t2-t1)+(t4-t3)+(t6-t5)+(t8-t7)+(t10-t9)
Wherein, tGeneral assemblyIndicates the total running time (min), t, of the air compressorLoadingIndicates the loading operation time (min), t of the air compressor1，t3，t5，t7，t9，t11Respectively indicating the starting time t of the loading operation of the air compressor2，t4，t6，t8，t10Respectively representing the initial moment of the unloading operation of the air compressor.
The principle is as follows:
analyzing an operating power curve diagram of the air compressor, wherein the loading and unloading of the existing known air compressor are controlled by an air inlet control valve, the air inlet control valve is opened during the loading operation, the air compressor performs effective air suction, compression and exhaust, and the power is increased; and the air inlet control valve is closed temporarily during unloading operation, the air compressor is in a no-load operation state, air suction and compression are not carried out, and the power is reduced until the air compressor runs stably, so that the operation of the air compressor is known to be composed of a plurality of loading and unloading processes, one of the loading and unloading processes is taken for analysis, the process comprises a loading process, an unloading process and a stable operation process, wherein the loading process is a stage of increasing the power of the air compressor, the unloading process is a stage of reducing the power of the air compressor, and the stable operation process is a process of keeping the power of the air compressor constant.
In order to identify the loading and unloading time periods of the air compressor, a plurality of continuous loading and unloading processes are designated as the total running time of the air compressor, the time periods of the loading processes in each loading and unloading process are identified, and the loading and running times of the air compressor are obtained by summing the time periods.
And step three, filling air into a pipeline of the compressed air system when the air compressor is in loading operation, unloading the air compressor when the pressure of the air storage tank reaches the set unloading pressure, continuously reducing the pressure of the air storage tank due to leakage in the pipeline, loading the air compressor again when the air pressure is lower than the set loading pressure, and repeating the process. Therefore, during loading and unloading of the air compressor, the leakage amount of the compressed air system is equal to the amount of air filled into the compressed air system pipeline during loading of the air compressor, and since the leakage occurs during the whole loading and unloading process of the air compressor, the air compressor fills air into the compressed air pipeline only during loading, the following formula can be obtained:
Qleakage of·tGeneral assembly＝Qa·tLoading
Wherein Q isLeakage ofIndicating the leakage (m) of the compressed air system3Min), the total leakage of the compressed air system can be calculated as follows:
when the total leakage of the compressed air system is detected, the total leakage is detected for multiple times by using a plurality of air compressors in the air compression station respectively, and then the average value is taken as the total leakage of the air compression system.
Detecting leakage of each device in each workshop mainly comprises detecting leakage of an air pressure cradle and an automatic doffer in a spinning workshop, an automatic winder in a winding workshop and an air jet loom in a weaving workshop; when the leakage amount of each device in each workshop is detected, the leakage detector is connected in parallel with an idle interface of the device to detect the compressed air leakage amount of the device; when the leakage of each device in each workshop is detected, measuring each device for multiple times, taking an average value as the leakage of the device, and adding the leakage of each type of device in the workshop to obtain the compressed air leakage of the whole workshop; the principle is as follows: the leakage detector does not directly measure the flow, but measures the pressure drop in the equipment caused by gas leakage, the leakage detector is connected in parallel to an idle interface of the equipment, a stop valve on an air supply pipeline is closed after the equipment is ensured to be in a pressurization state, when the equipment leaks, the leakage detector detects the pressure change in the air pipeline through a pressure sensor, calculates the compressed air leakage amount of the equipment and outputs a result.
The invention also adopts an ultrasonic scanning gun and a thermal infrared imager for positioning and analyzing the leakage, respectively detects the air pressure cradle and the automatic doffer of the spinning workshop, the automatic winder of the winding workshop and the air jet loom of the weaving workshop, and marks the position of the detected leakage point. The invention adopts an ultrasonic scanning gun and a thermal infrared imager for positioning and analyzing leakage, respectively detects an air pressure cradle and an automatic doffer in a spinning workshop, an automatic winder in a winding workshop and an air jet loom in a weaving workshop, organically combines the two detection methods, and enables the advantages to be complementary, thereby improving the detection performance;
the principle of the ultrasonic scanning gun is as follows: when the compressed air pipeline leaks, due to the fact that acoustic performance difference exists between the pipe and a leakage point, reflection conditions and round trip time of ultrasonic wave propagation waveforms are affected by the difference, ultrasonic signals can change, and the leakage is evaluated by analyzing propagation characteristics of ultrasonic waves on a detected workpiece through the ultrasonic scanning gun;
the principle of the thermal infrared imager is as follows: when the compressed air pipeline leaks, the surface temperature field changes, the compressed air expands integrally along with the leakage, heat exchange is generated between the compressed air and the environment, the gas temperature is reduced, the more the leakage amount is, the lower the leakage surface temperature is, the photosensitive element in the thermal infrared imager is used for receiving infrared radiation emitted by the compressed air, and the leakage is judged by analyzing characteristic information carried by the infrared radiation.
Compressed air prepared from an air compression station is sent to various workshops through air separation cylinders, and the compressed air used by a textile mill is divided into spinning part air and weaving part air, wherein the spinning part air is mainly used for the functions of pneumatic pressurization and automatic doffing of a spinning workshop, pneumatic knotting of a spooling workshop and the like; the air for the weaving part is mainly used for weft insertion and edge folding functions of an air jet loom in a weaving workshop. The air-using equipment in the spinning workshop is an air pressure cradle and an automatic doffer, has the characteristics of high air pressure and low air-using quality requirement, and the air-using quantity is related to the number of spun yarns, and the air-using quantity is larger; the gas utilization equipment of the spooling workshop is an automatic spooling machine, the pressure of a gas source is required to be higher, the gas consumption is related to the end breakage rate of the spooling workshop, and the higher the end breakage rate is, the larger the gas consumption is; the air-jet loom is used as air equipment in the weaving workshop, has the characteristics of low air pressure, large air consumption and high air quality requirement, and in conclusion, the leakage conditions are different due to different air consumption requirements of workshops of a textile mill on compressed air.
According to the use requirements and characteristics of compressed air in the textile field, the leakage is detected by adopting a method of combining ultrasonic wave and infrared technology with a leakage detector. Wherein, the ultrasonic and infrared technologies adopt an ultrasonic scanning gun and a thermal infrared imager for positioning and analyzing leakage; the leakage detector has the characteristics of high precision, simple access and convenient disassembly, and is used for quantitatively analyzing the compressed air leakage of each workshop and equipment.
The invention summarizes and analyzes the leakage amount and the leakage points, summarizes the leakage reasons, thereby helping the textile enterprises to adopt a corresponding repair scheme, help the textile enterprises to know the leakage through effective detection, and further adopt proper measures to reduce and eliminate the leakage so as to meet the energy-saving requirement, thereby having important significance.
Claims (6)
1. A method for detecting the total leakage of compressed air system in textile mill includes such steps as detecting the total leakage of compressed air system in air compressing station, then detecting the leakage amount of each device in each workshop, adding the leakage amounts of each device in each workshop, if the sum of the leakage amount of each device in each workshop is less than or equal to the total leakage amount or the difference between the leakage amount and the total leakage amount is less than or equal to 5 percent, the total leakage amount and the leakage amount of each device in each workshop are considered to be valid data, if the sum of the leakage amounts of each device in each workshop is larger than the total leakage amount or the difference between the two leakage amounts is larger than 5 percent, detecting the total leakage amount of the compressed air system and the leakage amount of each device in each workshop again at the air compression station, and calculating again until the sum of the leakage amounts of each device in each workshop is less than or equal to the total leakage amount or the difference between the leakage amounts of each device in each workshop is less than or equal to 5%;
the specific method for detecting the total leakage amount of the compressed air system in the air compression station comprises the following steps:
step one, during the period of production stoppage of a textile mill, operating an air compressor with loading and unloading functions, and calculating the volume flow Q of the air compressor under the standard conditiona(m3/min)；
Step two, recording the total running time t of the air compressorGeneral assembly(min), identifying the loading and unloading time period of the air compressor by using the intelligent power meter, and calculating to obtain the loading operation time t of the air compressorLoading(min)；
Step three, calculating the total leakage amount of the compressed air system
Calculating the volume flow Q of the air compressor under the standard condition in the step oneaThe specific method comprises the following steps: when a flow meter or a flow sensor is preset at the outlet of the air compressor, the volume flow Q under the actual working condition of the air compressor is directly read on the flow meter or the flow sensorWorking conditionsVolume flow Q of air compressor under standard conditionaComprises the following steps:
wherein Q isaVolume flow (m) of air compressor under standard condition3/min)，QWorking conditionsShows the volume flow (m) of the air compressor under the actual working condition3/min)，PWorking conditionsIndicating the air pressure (kPa), P at the outlet of the air compressor under actual conditionsgRepresenting the local actual atmospheric pressure (kPa), TWorking conditionsThe temperature (DEG C) of air at an outlet of the air compressor under the actual working condition is represented;
calculating the volume flow Q of the air compressor under the standard condition in the step oneaThe specific method comprises the following steps: when the outlet of the air compressor is not provided with a preset flow meter or a flow sensor, the actual air flow rate at the inlet of the air compressor is detected by using the impeller anemometer, and then the volume flow Q under the actual working condition of the air compressor is calculatedWorking conditions：QWorking conditions60 · S · v, wherein QWorking conditionsShows the volume flow (m) of the air compressor under the actual working condition3Min), S represents the area of the air compressor inlet duct (m)2) And v represents the air flow rate (m/s) at the inlet of the air compressor under the actual working condition detected by the impeller anemometer, so that the volume flow Q of the air compressor under the standard conditionaComprises the following steps:
wherein, TgThe temperature (DEG C) of air at the inlet of the air compressor under the actual working condition is shown, and P isgRepresenting the local actual atmospheric pressure (kPa);
in the second step, the loading and unloading time period of the air compressor is identified by using the intelligent power meter, and the loading operation time t of the air compressor is calculatedLoading(min) specifically comprises: the method comprises the steps of reading and recording the power of the air compressor in real time by using an intelligent power meter with a communication function, establishing a real-time operation power curve graph of the air compressor, and if the total operation time of the air compressor is t1To t11And then:
tgeneral assembly＝t11-t1
tLoading＝(t2-t1)+(t4-t3)+(t6-t5)+(t8-t7)+(t10-t9)
Wherein, tGeneral assemblyIndicates the total running time (min), t, of the air compressorLoadingIndicates the loading operation time (min), t of the air compressor1，t3，t5，t7，t9，t11Respectively indicating the starting time t of the loading operation of the air compressor2，t4，t6，t8，t10Respectively representing the initial moment of the unloading operation of the air compressor.
2. The method for detecting the total leakage of the compressed air system of the textile mill according to claim 1, wherein when the total leakage of the compressed air system is detected, the total leakage is detected by a plurality of air compressors in an air compression station for a plurality of times, and then the average value is taken to obtain the total leakage of the air compression system.
3. The method for detecting the total leakage of the compressed air system of the textile mill according to claim 1, wherein the detecting of the leakage of each device in each workshop mainly comprises detecting the leakage of an air pressure cradle and an automatic doffer in a spinning workshop, an automatic winder in a winding workshop and an air jet loom in a weaving workshop.
4. The method for detecting the total leakage of the compressed air system of the textile mill according to claim 3, wherein when the leakage of each device in each workshop is detected, the leakage detector is connected in parallel to an idle interface of the device to detect the compressed air leakage of the device.
5. The method for detecting the total leakage of the compressed air system of the textile mill according to claim 4, wherein when the leakage of each device in each workshop is detected, the leakage of each device is measured for multiple times and averaged to obtain the leakage of the device, and the leakage of each type of device in the workshop is added to obtain the leakage of the compressed air in the whole workshop.
6. The method for detecting the total leakage of the compressed air system of the textile mill as claimed in claim 3, wherein an ultrasonic scanning gun and a thermal infrared imager are used for positioning and analyzing the leakage, an air pressure cradle and an automatic doffer in a spinning workshop, an automatic winder in a winding workshop and an air jet loom in a weaving workshop are respectively detected, and the position of the detected leakage point is marked.
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| CN201810739097.6A CN108931277B (en) | 2018-07-06 | 2018-07-06 | Method for detecting total leakage of compressed air system of textile mill |
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| CN201810739097.6A Expired - Fee Related CN108931277B (en) | 2018-07-06 | 2018-07-06 | Method for detecting total leakage of compressed air system of textile mill |
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