CN112963333A - Method and device for determining diameter of blowback hole of dryer of vehicle air source device - Google Patents
Method and device for determining diameter of blowback hole of dryer of vehicle air source device Download PDFInfo
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- CN112963333A CN112963333A CN202110204466.3A CN202110204466A CN112963333A CN 112963333 A CN112963333 A CN 112963333A CN 202110204466 A CN202110204466 A CN 202110204466A CN 112963333 A CN112963333 A CN 112963333A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/002—Air treatment devices
- B60T17/004—Draining and drying devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/04—Bolster supports or mountings
- B61F5/10—Bolster supports or mountings incorporating fluid springs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
- B61H11/06—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
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- General Engineering & Computer Science (AREA)
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- Computer Hardware Design (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
A method and a device for determining the drift diameter of a blowback hole of a dryer of a vehicle air source device are provided. The method comprises the following steps: determining the drift diameter range of the back-blowing holes according to the working pressure range of the vehicle main air pipeline, and selecting a plurality of back-blowing holes with different drift diameters in the drift diameter range; under different working pressures of the vehicle main air pipeline, collecting the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters, and determining a relation function between the air displacement of the air source device corresponding to each back-blowing hole and the working pressure of the vehicle main air pipeline; determining the initial air charging time corresponding to each back flushing hole according to the relation function; and determining the drift diameter of the back blowing holes of the air source device dryer according to the preset screening conditions and the primary air charging time and the relation function corresponding to each back blowing hole. According to the invention, the air displacement of the air source device under different pipeline pressures can be obtained by determining the relation function of the air displacement pipeline pressure change of the air source device, the initial air charging time is accurately calculated, and the back flushing hole drift diameter of the air source device dryer is accurately selected by combining the preset screening condition.
Description
Technical Field
The invention relates to the technical field of air source devices of vehicles, in particular to a method and a device for determining the drift diameter of a blowback hole of a dryer of the air source device of the vehicle.
Background
The wind source device is a key device for supplying wind for the rail transit vehicle, and the generated compressed air can be used for vehicle devices such as a braking system, an air spring system and the like. The air source device generally comprises an air compressor unit, a filter, a dryer and other parts, wherein the air compressor unit generates compressed air, the lower part of the filter is provided with a pollution discharge electromagnetic valve which discharges pollution to the outside at regular intervals and consumes certain compressed air; the dryer is provided with a back-blowing hole, and in order to ensure the normal work of the dryer, the dryer must consume certain compressed air for back-blowing.
The selection of the displacement of the wind source is a very important task in the design of the wind source. If the air displacement of the air source device is too small, insufficient air supply can be caused, the initial air charging time of the vehicle is not met, and the normal work of air utilization equipment such as a braking system and an air spring system is influenced. If the air source device exhausts too much air, the problems of lubricating oil emulsification, heavy product weight, high economic cost and the like can be caused due to low working rate of the air source device.
For manufacturers of wind source devices, air compressor units are all shaped through strict and complicated design processes and long-time test application, and once the air compressor units are shaped, the air displacement of the air compressor units is very difficult to adjust. The amount of the compressed air which can be processed by the filter and the size of the sewage discharge outlet are generally determined according to the displacement of the air compressor unit, and the adjustable space of the amount of the compressed air consumed by the filter during working is very small. Therefore, when the number of vehicle marshalling, the size and the number of the air cylinders, the passenger flow and other factors influencing the initial air charging time and the air consumption change and the air compressor unit with larger or smaller air displacement is not replaced, the air consumption requirement of the vehicle is generally met by adjusting the size of the back flushing hole drift diameter of the dryer.
In the prior art, generally, the total amount of air required by parts such as an air cylinder, a pipeline, an air spring system and the like related to initial air charging of a vehicle until the pressure reaches the upper limit of a normal working pressure range is directly divided by the air displacement of an air source device corresponding to the minimum back flushing hole drift diameter available for a dryer when the upper limit of the normal working pressure range is reached to obtain theoretical calculation time, and if the theoretical calculation time is not more than the required initial air charging time of the vehicle and the maximum air consumption requirement in the running of the vehicle is met, the minimum back flushing hole drift diameter available for the dryer is selected; and if the theoretical calculation time is longer than the required initial air charging time of the vehicle or does not meet the requirement of the maximum air consumption in the running process of the vehicle, selecting an air compressor unit with the large first air displacement and a dryer. The problems of the prior art are as follows:
(1) the compressed air amount consumed by the dryer is reduced along with the pressure reduction, the factor is not considered in the calculation of the initial air charging time of the vehicle in the prior art, only the air displacement of the air source device when the total air pipeline pressure is equal to the upper limit of the normal working pressure range is considered, the actual air displacement of the air source device is higher than the air displacement adopted in the calculation of the initial air charging time, and the actual initial air charging time is shorter than the calculation time, so that the air displacement of the selected air source device is possibly overlarge; the prior art does not consider the factor in the design and calculation process of the working rate of the wind source device, and the actual working rate of the wind source device is possibly lower than the design working rate.
(2) When the vehicle is initially charged, air charging to an air cylinder and a pipeline of a braking system is preferentially ensured, when the total air pressure of the braking system reaches a certain value, air charging to an air spring system or other equipment is started, namely, the system pressure when the air spring system or other equipment is charged is not started from the gauge pressure of 0, and the calculation accuracy of the initial charging time of the vehicle is influenced by the factor which is not considered in the prior art.
(3) The reduction of the atmospheric pressure at the air inlet of the air source device can reduce the absolute value of the air mass corresponding to the displacement of the air source device, and the factors are not considered in the prior art, so that the calculation accuracy of the initial air charging time of a vehicle and the calculation accuracy of the displacement of the air source device in the running process of the vehicle are influenced.
Disclosure of Invention
In view of the problems in the prior art, the main object of the embodiments of the present invention is to provide a method and a device for determining the diameter of a blowback hole of a dryer of a vehicle air source device, so as to accurately calculate the initial air charging time of the vehicle and determine the relationship between the displacement of the air source device and the pressure, and accurately select the diameter of the blowback hole of the dryer of the air source device.
In order to achieve the above object, an embodiment of the present invention provides a method for determining a blowhole diameter of a dryer of a vehicle air source device, where the method includes:
determining the drift diameter range of the back-blowing holes of the dryer of the air source device according to the preset working pressure range of the total air pipeline of the vehicle, and selecting a plurality of back-blowing holes with different drift diameters within the drift diameter range;
under different working pressures of the vehicle main air pipeline, collecting the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters, and determining a relation function between the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters and the working pressure of the vehicle main air pipeline;
determining the primary air charging time corresponding to the back blowing holes with different drift diameters according to the relation function;
and determining the drift diameter of the back blowing hole of the air source device dryer according to preset screening conditions and the initial air charging time and the relation function corresponding to the back blowing holes with different drift diameters.
Optionally, in an embodiment of the present invention, the screening condition includes: the primary air charging time corresponding to the back blowing holes is not more than a preset time threshold; under the maximum working pressure of a vehicle main air pipeline, the air displacement of an air source device corresponding to the back blowing hole is not less than the preset maximum vehicle air consumption; and the working rate of the wind source device is higher than a preset working rate threshold value.
Optionally, in an embodiment of the present invention, the determining the back blowing hole drift diameter of the air source device dryer according to the preset screening condition and the initial air charging time and the relationship function corresponding to the back blowing holes with different drift diameters includes:
according to the primary air charging time corresponding to the back-blowing holes with different drift diameters, in the back-blowing holes with different drift diameters, the back-blowing holes with the primary air charging time not greater than a time threshold value are used as the back-blowing holes meeting the first screening condition;
according to the corresponding relation function of the back-blowing holes with different drift diameters, in the back-blowing holes meeting the first screening condition, the back-blowing holes with the air displacement of the air source device not less than the maximum air consumption of the vehicle under the maximum working pressure of the vehicle main air pipeline are used as the back-blowing holes meeting the second screening condition;
determining the working rates of the air source devices corresponding to the back-blowing holes with different drift diameters according to the corresponding relation functions of the back-blowing holes with different drift diameters, and taking the back-blowing hole with the working rate higher than the working rate threshold value as the back-blowing hole meeting the third screening condition in the back-blowing holes meeting the second screening condition;
and among the back-blowing holes meeting the third screening condition, the back-blowing hole with the smallest drift diameter is used as the back-blowing hole of the air source device dryer.
Optionally, in an embodiment of the present invention, the determining, according to the relationship function, initial air charging time corresponding to blowback holes with different drift diameters includes: and determining initial air charging time corresponding to the back-blowing holes with different drift diameters according to the quantity of the vehicle equipment, the volume of the vehicle equipment and a relation function of the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters and the working pressure of the total air pipeline of the vehicle.
The embodiment of the invention also provides a device for determining the drift diameter of the blowback hole of the dryer of the vehicle air source device, which comprises:
the drift diameter range module is used for determining the drift diameter range of the back-blowing holes of the air source device dryer according to the preset working pressure range of the total air pipeline of the vehicle, and selecting a plurality of back-blowing holes with different drift diameters within the drift diameter range;
the relation function module is used for collecting the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters under different working pressures of the vehicle total air pipeline and determining the relation function between the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters and the working pressure of the vehicle total air pipeline;
the primary air charging time module is used for determining primary air charging time corresponding to the back blowing holes with different drift diameters according to the relation function;
and the drift diameter determining module is used for determining the drift diameter of the back blowing hole of the air source device dryer according to the preset screening condition and the primary air charging time and the relation function corresponding to the back blowing holes with different drift diameters.
Optionally, in an embodiment of the present invention, the screening condition includes: the primary air charging time corresponding to the back blowing holes is not more than a preset time threshold; under the maximum working pressure of a vehicle main air pipeline, the air displacement of an air source device corresponding to the back blowing hole is not less than the preset maximum vehicle air consumption; and the working rate of the wind source device is higher than a preset working rate threshold value.
Optionally, in an embodiment of the present invention, the path determining module includes:
the first screening condition unit is used for taking the back blowing holes with the initial air charging time not greater than a time threshold value as the back blowing holes meeting the first screening condition in the back blowing holes with different drift diameters according to the initial air charging time corresponding to the back blowing holes with different drift diameters;
the second screening condition unit is used for taking the back blowing holes with the air displacement not less than the maximum air consumption of the vehicle under the maximum working pressure of a vehicle main air pipeline as the back blowing holes meeting the second screening condition in the back blowing holes meeting the first screening condition according to the corresponding relation functions of the back blowing holes with different drift diameters;
the third screening condition unit is used for determining the working rates of the air source devices corresponding to the back-blowing holes with different drift diameters according to the corresponding relation functions of the back-blowing holes with different drift diameters, and the back-blowing holes with the working rates higher than the working rate threshold value among the back-blowing holes meeting the second screening condition are used as the back-blowing holes meeting the third screening condition;
and the drift diameter determining unit is used for taking the blowback hole with the minimum drift diameter as the blowback hole of the air source device dryer in the blowback holes meeting the third screening condition.
Optionally, in an embodiment of the present invention, the initial air charging time module is further configured to: and determining initial air charging time corresponding to the back-blowing holes with different drift diameters according to the quantity of the vehicle equipment, the volume of the vehicle equipment and a relation function of the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters and the working pressure of the total air pipeline of the vehicle.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method when executing the program.
The present invention also provides a computer-readable storage medium storing a computer program for executing the above method.
According to the invention, the accurate air displacement of the air source device under different pipeline pressure conditions can be obtained by determining the relation function of the air displacement pipeline pressure change of the air source device, so that the initial air charging time can be accurately calculated, and the accurate selection of the drift diameter of the blowback hole of the air source device dryer can be realized by combining the preset screening conditions.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a flow chart of a method for determining a drift diameter of a blowback hole of a dryer of a vehicle air source device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the pneumatic principle of the wind source device in the embodiment of the invention;
FIG. 3 is a flow chart of a back-blowing hole drift diameter screening process in an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a device for determining a diameter of a blowback hole of a dryer of a vehicle air source device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a path determination module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method and a device for determining the drift diameter of a blowback hole of a dryer of a vehicle air source device.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The air displacement of the air source device is equal to the amount of compressed air generated by the air compressor unit in unit time minus the sum of the compressed air consumed by the filter and the dryer. Unless otherwise specified, the air displacement of the air source device in the present invention is the air displacement obtained by converting the air flow discharged from the air source device to the air flow at the same pressure and temperature at the air inlet of the air source device, and is the same as below. Unless otherwise specified, the air pressure is the gauge pressure, and the same applies hereinafter.
Fig. 1 is a flowchart illustrating a method for determining a blowback hole diameter of a dryer of a vehicle air source device according to an embodiment of the present invention, where an implementation subject of the method for determining a blowback hole diameter of a dryer of a vehicle air source device according to an embodiment of the present invention includes, but is not limited to, a computer. The method shown in the figure comprises the following steps:
and step S1, determining the drift diameter range of the back-blowing holes of the air source device dryer according to the preset working pressure range of the total air pipeline of the vehicle, and selecting a plurality of back-blowing holes with different drift diameters within the drift diameter range.
Wherein, as shown in fig. 2, the pneumatic principle schematic diagram of the air source device in the embodiment of the invention includes an air compressor unit 1, a filter 2, a filter 4, a dryer 3 and an overflow valve 5, and the opening pressure value of the overflow valve is POverflow。
Specifically, a corresponding filter and a corresponding dryer are selected according to the known type of air compressor set. The available minimum back-blowing hole drift diameter of the dryer is usually determined by the minimum back-blowing gas consumption rate of the dryer, if the back-blowing hole is too small, the back-blowing gas consumption rate is possibly low, the drying agent is powdered in advance, and the minimum back-blowing gas consumption rate is generally not lower than 15%. The available maximum back-blowing hole diameter is usually determined by the installation space of the back-blowing hole of the dryer or the maximum back-blowing air consumption rate of the dryer, and the back-blowing hole with larger diameter cannot be used if the installation space of the back-blowing hole is limited; the drier has too high back-blowing air consumption rate, and may generate larger scouring force to the drying agent, so that the service life of the drying agent is reduced, and the maximum back-blowing air consumption rate is generally not more than 50%.
Recording the normal working pressure range of the main air pipeline as P in the running process of the vehicle_1～P_2，P_1Total wind line pressure, P, for a wind source device to begin charging the vehicle_2The total air pipeline pressure when the air source device stops charging air is obtained. In the process of initial charging of the vehicle, charging air to the air cylinder, pipeline, air spring system and other parts related to the initial charging of the vehicle, and when the total air pipeline pressure rises from 0 to the upper limit P of the normal working pressure range_2Need to makeThe total air amount is directly divided by the requirement of initial air charging time to obtain a theoretically calculated air displacement preliminarily. According to the air displacement calculated by the theory, further, the selectable path range D of the back-blowing holes of the dryer can be preliminarily determined by combining the experience of selecting the path of the back-blowing holes of the past dryer_min～D_max. For the range of selectable drift diameters of the blowback holes of the dryer, from D_minTo D_maxOne blowback hole is provided for each increase in the drift diameter by a predetermined value (for example, 0.1 mm). In particular, D_iThe diameter of the blowback hole of the dryer can be D_min+i×0.1mm，0≤i≤(D_max-D_min)/0.1mm。
And step S2, under different vehicle total air pipeline working pressures, acquiring the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters, and determining a relation function between the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters and the vehicle total air pipeline working pressure.
Wherein, D is for each path_iWherein i is not less than 0 and not more than (D)_max-D_min) 0.1mm, and the pressure of the pipeline at the air outlet of the air source device is 0-P_2Within the range, through experimental tests, the air displacement of the wind source device is collected at intervals of preset pressure values (for example, 50kPa, or smaller interval pressure values). If overflow valves are arranged at the downstream of the filter and the dryer of the wind source device, such as the overflow valve 5 in fig. 2, the pressure of the pipeline at the air outlet is less than or equal to POverflowIn the process, because of the existence of the overflow valve, the air displacement of the air source device and the pipeline pressure of the air outlet of the air source device are considered to be equal to P in the processOverflowThe time is equal, at the moment, the pressure of the pipeline at the air outlet of the air source device can be directly equal to POverflowTest testing was started. The configuration D of the wind source device can be obtained by the method_iThe function of the air displacement of the back-blowing holes along with the pressure change of the air outlet pipeline of the wind source device when the drift diameters of the back-blowing holes are changed, namely the relation function of the air displacement of the wind source device corresponding to the back-blowing holes with different drift diameters and the working pressure of the total wind pipeline of the vehicle is determined and recorded as Q_i(P), unit m3/min。
And step S3, determining the primary air charging time corresponding to the back blowing holes with different drift diameters according to the relation function.
Wherein the above configuration D is used_iWhen the wind source device of the drift diameter back blowing hole performs primary air charging on the vehicle, the calculation formula of primary air charging time is as follows
In the formula, N is the number of devices needing primary air charging in the primary air charging process of the vehicle, and V is_jIs the volume of the jth apparatus, P_j_startThe total air pipeline pressure P when the jth equipment is inflated from the beginning of the initial air inflation process of the vehicle_j_2And the total air pipeline pressure of the jth equipment after the charging in the initial charging process of the vehicle is obtained. Q_iAnd (P) is the exhaust volume of the wind source device when the pipeline pressure at the air outlet of the wind source device is P. When the wind source device is installed on the vehicle, the duct pressure at the air outlet of the wind source device and the total duct pressure of the vehicle can be regarded as equal, and the following is the same. P_0The absolute pressure corresponding to the air inlet gauge pressure of the air source device of 0 is P in the low altitude area_0Taking the standard atmospheric pressure of 101.325 kPa; in higher altitude areas, P_0The corresponding atmospheric pressure value is adopted.
And step S4, determining the drift diameter of the blowback hole of the air source device dryer according to the preset screening condition and the initial air charging time and the relation function corresponding to the blowback holes with different drift diameters.
And judging whether the initial air charging time and the relation function corresponding to the back-blowing holes with different drift diameters meet preset screening conditions or not according to the obtained initial air charging time and relation function corresponding to the back-blowing holes with different drift diameters. And if so, selecting the back-blowing hole with the smallest drift diameter from the back-blowing holes meeting the preset screening conditions as the back-blowing hole of the dryer of the air source device.
As an embodiment of the present invention, the screening conditions include: the primary air charging time corresponding to the back blowing holes is not more than a preset time threshold; under the maximum working pressure of a vehicle main air pipeline, the air displacement of an air source device corresponding to the back blowing hole is not less than the preset maximum vehicle air consumption; and the working rate of the wind source device is higher than a preset working rate threshold value.
In this embodiment, as shown in fig. 3, determining the back-blowing aperture diameter of the dryer of the air source device according to the preset screening condition, the initial air-charging time corresponding to the back-blowing apertures with different diameters, and the relationship function includes:
and step S21, according to the primary air charging time corresponding to the back-blowing holes with different drift diameters, in the back-blowing holes with different drift diameters, taking the back-blowing hole with the primary air charging time not greater than the time threshold value as the back-blowing hole meeting the first screening condition.
Wherein for 0. ltoreq. i. ltoreq (D)_max-D_max) 0.1mm, calculating different back-blowing hole drift diameters D through a formula (1)_iCorresponding initial air charging time T_iSelecting a diameter D of the blowback hole_iCorresponding T_iAnd the value is less than or equal to a preset initial air charging time threshold value, which is a first screening condition. Furthermore, the back-blowing holes after the screening are used as the back-blowing holes meeting the first screening condition.
And step S22, according to the corresponding relation function of the back-blowing holes with different drift diameters, in the back-blowing holes meeting the first screening condition, taking the back-blowing holes with the air displacement of the air source device not less than the maximum air consumption of the vehicle under the maximum working pressure of the vehicle main air pipeline as the back-blowing holes meeting the second screening condition.
Wherein the maximum consumption of the train is Q in the running process of the trainLoss _ max，QLoss _ maxCan be obtained by calculation or experiment according to the set vehicle running condition QLoss _ maxThe air flow is converted into the corresponding air flow under the air inlet temperature and the atmospheric pressure of the air source device. When the total air pipeline pressure is P_2In the meantime, the diameter D of the blowback hole is selected_iCorresponding air source device air displacement Q_i(P_2) Should be greater than or equal to QLoss _ maxThis is the second screening condition. Further, the blowback holes meeting the first screening condition are screened, and the screened blowback holes are used as blowback holes meeting the second screening condition.
And step S23, determining the working rates of the air source devices corresponding to the back-blowing holes with different drift diameters according to the corresponding relation functions of the back-blowing holes with different drift diameters, and taking the back-blowing holes with the working rates higher than the working rate threshold value as the back-blowing holes meeting the third screening condition among the back-blowing holes meeting the second screening condition.
Wherein, the diameter D of the back-blowing hole_iCorresponding air source device air displacement Q_i(P) the requirement of the lowest working rate of the wind source device in the running process of the vehicle is met. Total air line pressure range P_1～P_2Generally, the working rate of the screw type air source device is not lower than 25 percent, and the working rate of the piston type air source device is not lower than 20 percent. The working rate of the air source device can be calculated or obtained through experiments according to set vehicle running conditions, and the influence of two factors, namely reduction of compressed air consumed by the dryer in back blowing along with the pressure reduction of a total air pipeline and reduction of the air quality absolute value corresponding to the air displacement of the air source device caused by reduction of the atmospheric pressure at an air inlet of the air source, is considered in the working rate calculation process of the air source device, and the third screening condition is provided. Further, the blowback holes meeting the second screening condition are screened, and the screened blowback holes are used as blowback holes meeting the third screening condition.
And step S24, among the back-blowing holes meeting the third screening condition, the back-blowing hole with the smallest drift diameter is used as the back-blowing hole of the air source device dryer.
And selecting the blowback hole with the smallest drift diameter from the blowback holes meeting the third screening condition, and taking the blowback hole as the blowback hole of the air source device dryer, wherein the drift diameter of the blowback hole is taken as the drift diameter of the blowback hole of the air source device dryer.
As an embodiment of the present invention, determining the initial charging time corresponding to the back-blowing holes with different drift diameters according to the relationship function includes: and determining initial air charging time corresponding to the back-blowing holes with different drift diameters according to the quantity of the vehicle equipment, the volume of the vehicle equipment and a relation function of the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters and the working pressure of the total air pipeline of the vehicle.
Wherein configuration D is used_iWhen the wind source device of latus rectum anti-blow hole carries out the initial charge wind for the vehicle, the initial charge wind time computational formula is formula (1), promptly:
in the formula, N is the number of devices needing primary air charging in the primary air charging process of the vehicle, and V is_jIs the volume of the jth apparatus, P_j_startThe total air pipeline pressure P when the jth equipment is inflated from the beginning of the initial air inflation process of the vehicle_j_2And the total air pipeline pressure of the jth equipment after the charging in the initial charging process of the vehicle is obtained. Q_iAnd (P) is the exhaust volume of the wind source device when the pipeline pressure at the air outlet of the wind source device is P. When the wind source device is installed on the vehicle, the air outlet pipeline pressure of the wind source device and the total air pipeline pressure of the vehicle can be considered to be equal. P_0The absolute pressure corresponding to the air inlet gauge pressure of the air source device of 0 is P in the low altitude area_0Taking the standard atmospheric pressure of 101.325 kPa; in higher altitude areas, P_0The corresponding atmospheric pressure value is adopted.
Due to the complex structure of the dryer, the accuracy of calculating the back-blowing hole flow of the dryer by adopting a common small hole flow calculation theory is low, and the application requirement cannot be met. According to the invention, the accurate displacement of the wind source device under different downstream pipeline pressure conditions can be obtained by acquiring the displacement of the wind source device when the downstream pipeline pressure of the wind source device gradually changes and forming a relation function of the displacement of the wind source device along with the change of the downstream pipeline pressure according to test data.
Furthermore, the following three influence factors are considered in the calculation of the initial air charging time, and the calculation result has high accuracy.
(1) The compressed air amount consumed by the back flushing of the dryer is reduced along with the pressure drop;
(2) the total air line pressure when charging an air spring system or other device may not start at a gauge pressure of 0;
(3) the reduction of the atmospheric pressure at the air inlet of the air source can cause the air mass absolute value corresponding to the air displacement of the air source device to be reduced.
Furthermore, in the process of calculating the air displacement of the air source device and comparing the air displacement with the maximum air consumption of the vehicle, the method and the device consider the following two factors, and the result is reliable and accurate.
(1) The compressed air amount consumed by the dryer reverse blowing is reduced along with the pressure reduction of the total air pipeline, and the air displacement of the air source device when the total air pipeline pressure is the upper limit of the normal working pressure range is selected to be compared with the maximum air consumption of the vehicle;
(2) the reduction of the atmospheric pressure at the air inlet of the air source can cause the air mass absolute value corresponding to the air displacement of the air source device to be reduced.
Furthermore, the following two influence factors are considered in the calculation of the working rate of the wind source device, and the calculation result is high in accuracy.
(1) The compressed air amount consumed by the back flushing of the dryer is reduced along with the pressure drop;
(2) the reduction of the atmospheric pressure at the air inlet of the air source device can cause the air mass absolute value corresponding to the air displacement of the air source device to be reduced.
According to the invention, the accurate air displacement of the air source device under different pipeline pressure conditions can be obtained by determining the relation function of the air displacement pipeline pressure change of the air source device, so that the initial air charging time can be accurately calculated, and the accurate selection of the drift diameter of the blowback hole of the air source device dryer can be realized by combining the preset screening conditions.
Fig. 4 is a schematic structural diagram of a blowback hole diameter determining device of a dryer of a vehicle air source device according to an embodiment of the present invention, where the device includes:
the drift diameter range module 10 is used for determining the drift diameter range of the back-blowing holes of the air source device dryer according to the preset working pressure range of the total air pipeline of the vehicle, and selecting a plurality of back-blowing holes with different drift diameters within the drift diameter range;
the relation function module 20 is configured to collect the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters under different vehicle total air pipeline working pressures, and determine a relation function between the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters and the vehicle total air pipeline working pressure;
the primary air charging time module 30 is used for determining primary air charging time corresponding to the back blowing holes with different drift diameters according to the relation function;
and the drift diameter determining module 40 is used for determining the drift diameter of the back blowing hole of the air source device dryer according to preset screening conditions and the primary air charging time and the relation function corresponding to the back blowing holes with different drift diameters.
As an embodiment of the present invention, the screening conditions include: the primary air charging time corresponding to the back blowing holes is not more than a preset time threshold; under the maximum working pressure of a vehicle main air pipeline, the air displacement of an air source device corresponding to the back blowing hole is not less than the preset maximum vehicle air consumption; and the working rate of the wind source device is higher than a preset working rate threshold value.
In the present embodiment, as shown in fig. 5, the path determining module 40 includes:
a first screening condition unit 41, configured to, according to the initial air-charging time corresponding to each of the back-blowing holes with different drift diameters, use, as a back-blowing hole satisfying a first screening condition, a back-blowing hole with an initial air-charging time not greater than a time threshold among the back-blowing holes with different drift diameters;
a second screening condition unit 42, configured to, according to a relationship function corresponding to the blowback holes with different drift diameters, use, as the blowback hole meeting the second screening condition, a blowback hole in which an exhaust amount of the air source device is not less than a maximum air consumption amount of the vehicle under a maximum working pressure of a vehicle main air pipeline among the blowback holes meeting the first screening condition;
a third screening condition unit 43, configured to determine, according to a relationship function corresponding to the blowback holes with different drift diameters, the operating rates of the air source devices corresponding to the blowback holes with different drift diameters, and in the blowback holes meeting the second screening condition, use the blowback hole whose operating rate of the air source device is higher than the threshold of the operating rate as the blowback hole meeting the third screening condition;
and a drift diameter determining unit 44, configured to use, as a blowback hole of the wind source device dryer, a blowback hole with the smallest drift diameter among the blowback holes satisfying the third screening condition.
As an embodiment of the present invention, the initial charging time module is further configured to: and determining initial air charging time corresponding to the back-blowing holes with different drift diameters according to the quantity of the vehicle equipment, the volume of the vehicle equipment and a relation function of the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters and the working pressure of the total air pipeline of the vehicle.
Based on the same application concept as the method for determining the back flushing hole drift diameter of the vehicle air source device dryer, the invention also provides the device for determining the back flushing hole drift diameter of the vehicle air source device dryer. The principle of solving the problems of the back flushing hole drift diameter determining device of the vehicle air source device dryer is similar to the back flushing hole drift diameter determining method of the vehicle air source device dryer, so the implementation of the back flushing hole drift diameter determining device of the vehicle air source device dryer can refer to the implementation of the back flushing hole drift diameter determining method of the vehicle air source device dryer, and repeated parts are not repeated.
According to the invention, the accurate air displacement of the air source device under different pipeline pressure conditions can be obtained by determining the relation function of the air displacement pipeline pressure change of the air source device, so that the initial air charging time can be accurately calculated, and the accurate selection of the drift diameter of the blowback hole of the air source device dryer can be realized by combining the preset screening conditions.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method when executing the program.
The present invention also provides a computer-readable storage medium storing a computer program for executing the above method.
As shown in fig. 6, the electronic device 600 may further include: communication module 110, input unit 120, audio processing unit 130, display 160, power supply 170. It is noted that the electronic device 600 does not necessarily include all of the components shown in FIG. 6; furthermore, the electronic device 600 may also comprise components not shown in fig. 6, which may be referred to in the prior art.
As shown in fig. 6, the central processor 100, sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device, the central processor 100 receiving input and controlling the operation of the various components of the electronic device 600.
The memory 140 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable media, a volatile memory, a non-volatile memory, or other suitable device. The information relating to the failure may be stored, and a program for executing the information may be stored. And the central processing unit 100 may execute the program stored in the memory 140 to realize information storage or processing, etc.
The input unit 120 provides input to the cpu 100. The input unit 120 is, for example, a key or a touch input device. The power supply 170 is used to provide power to the electronic device 600. The display 160 is used to display an object to be displayed, such as an image or a character. The display may be, for example, an LCD display, but is not limited thereto.
The memory 140 may be a solid state memory such as Read Only Memory (ROM), Random Access Memory (RAM), a SIM card, or the like. There may also be a memory that holds information even when power is off, can be selectively erased, and is provided with more data, an example of which is sometimes called an EPROM or the like. The memory 140 may also be some other type of device. Memory 140 includes buffer memory 141 (sometimes referred to as a buffer). The memory 140 may include an application/function storage section 142, and the application/function storage section 142 is used to store application programs and function programs or a flow for executing the operation of the electronic device 600 by the central processing unit 100.
The memory 140 may also include a data store 143, the data store 143 for storing data, such as contacts, digital data, pictures, sounds, and/or any other data used by the electronic device. The driver storage portion 144 of the memory 140 may include various drivers of the electronic device for communication functions and/or for performing other functions of the electronic device (e.g., messaging application, address book application, etc.).
The communication module 110 is a transmitter/receiver 110 that transmits and receives signals via an antenna 111. The communication module (transmitter/receiver) 110 is coupled to the central processor 100 to provide an input signal and receive an output signal, which may be the same as in the case of a conventional mobile communication terminal.
Based on different communication technologies, a plurality of communication modules 110, such as a cellular network module, a bluetooth module, and/or a wireless local area network module, may be provided in the same electronic device. The communication module (transmitter/receiver) 110 is also coupled to a speaker 131 and a microphone 132 via an audio processor 130 to provide audio output via the speaker 131 and receive audio input from the microphone 132 to implement general telecommunications functions. Audio processor 130 may include any suitable buffers, decoders, amplifiers and so forth. In addition, an audio processor 130 is also coupled to the central processor 100, so that recording on the local can be enabled through a microphone 132, and so that sound stored on the local can be played through a speaker 131.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A method for determining a diameter of a blowback hole of a dryer of a vehicle air source device, the method comprising:
determining the drift diameter range of the back-blowing holes of the dryer of the air source device according to the preset working pressure range of the total air pipeline of the vehicle, and selecting a plurality of back-blowing holes with different drift diameters within the drift diameter range;
under different working pressures of the vehicle main air pipeline, collecting the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters, and determining a relation function between the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters and the working pressure of the vehicle main air pipeline;
determining the primary air charging time corresponding to the back blowing holes with different drift diameters according to the relation function;
and determining the drift diameter of the back blowing hole of the air source device dryer according to preset screening conditions and the initial air charging time and the relation function corresponding to the back blowing holes with different drift diameters.
2. The method of claim 1, wherein the screening conditions comprise: the primary air charging time corresponding to the back blowing holes is not more than a preset time threshold; under the maximum working pressure of a vehicle main air pipeline, the air displacement of an air source device corresponding to the back blowing hole is not less than the preset maximum vehicle air consumption; and the working rate of the wind source device is higher than a preset working rate threshold value.
3. The method of claim 2, wherein the determining the blowback hole paths of the air source device dryer according to the preset screening conditions and the initial charging time and the relation function corresponding to the blowback holes with different paths comprises:
according to the primary air charging time corresponding to the back-blowing holes with different drift diameters, in the back-blowing holes with different drift diameters, the back-blowing holes with the primary air charging time not greater than a time threshold value are used as the back-blowing holes meeting the first screening condition;
according to the corresponding relation function of the back-blowing holes with different drift diameters, in the back-blowing holes meeting the first screening condition, the back-blowing holes with the air displacement of the air source device not less than the maximum air consumption of the vehicle under the maximum working pressure of the vehicle main air pipeline are used as the back-blowing holes meeting the second screening condition;
determining the working rates of the air source devices corresponding to the back-blowing holes with different drift diameters according to the corresponding relation functions of the back-blowing holes with different drift diameters, and taking the back-blowing hole with the working rate higher than the working rate threshold value as the back-blowing hole meeting the third screening condition in the back-blowing holes meeting the second screening condition;
and among the back-blowing holes meeting the third screening condition, the back-blowing hole with the smallest drift diameter is used as the back-blowing hole of the air source device dryer.
4. The method according to claim 1, wherein determining the initial charging time corresponding to the back-blowing holes with different drift diameters according to the relation function comprises:
and determining initial air charging time corresponding to the back-blowing holes with different drift diameters according to the quantity of the vehicle equipment, the volume of the vehicle equipment and a relation function of the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters and the working pressure of the total air pipeline of the vehicle.
5. A blowhole diameter determining device of a dryer of a vehicle air source device, the device comprising:
the drift diameter range module is used for determining the drift diameter range of the back-blowing holes of the air source device dryer according to the preset working pressure range of the total air pipeline of the vehicle, and selecting a plurality of back-blowing holes with different drift diameters within the drift diameter range;
the relation function module is used for collecting the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters under different working pressures of the vehicle total air pipeline and determining the relation function between the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters and the working pressure of the vehicle total air pipeline;
the primary air charging time module is used for determining primary air charging time corresponding to the back blowing holes with different drift diameters according to the relation function;
and the drift diameter determining module is used for determining the drift diameter of the back blowing hole of the air source device dryer according to the preset screening condition and the primary air charging time and the relation function corresponding to the back blowing holes with different drift diameters.
6. The apparatus of claim 5, wherein the screening conditions comprise: the primary air charging time corresponding to the back blowing holes is not more than a preset time threshold; under the maximum working pressure of a vehicle main air pipeline, the air displacement of an air source device corresponding to the back blowing hole is not less than the preset maximum vehicle air consumption; and the working rate of the wind source device is higher than a preset working rate threshold value.
7. The apparatus of claim 6, wherein the path determination module comprises:
the first screening condition unit is used for taking the back blowing holes with the initial air charging time not greater than a time threshold value as the back blowing holes meeting the first screening condition in the back blowing holes with different drift diameters according to the initial air charging time corresponding to the back blowing holes with different drift diameters;
the second screening condition unit is used for taking the back blowing holes with the air displacement not less than the maximum air consumption of the vehicle under the maximum working pressure of a vehicle main air pipeline as the back blowing holes meeting the second screening condition in the back blowing holes meeting the first screening condition according to the corresponding relation functions of the back blowing holes with different drift diameters;
the third screening condition unit is used for determining the working rates of the air source devices corresponding to the back-blowing holes with different drift diameters according to the corresponding relation functions of the back-blowing holes with different drift diameters, and the back-blowing holes with the working rates higher than the working rate threshold value among the back-blowing holes meeting the second screening condition are used as the back-blowing holes meeting the third screening condition;
and the drift diameter determining unit is used for taking the blowback hole with the minimum drift diameter as the blowback hole of the air source device dryer in the blowback holes meeting the third screening condition.
8. The apparatus of claim 5, wherein the initial air charge time module is further configured to: and determining initial air charging time corresponding to the back-blowing holes with different drift diameters according to the quantity of the vehicle equipment, the volume of the vehicle equipment and a relation function of the air displacement of the air source device corresponding to the back-blowing holes with different drift diameters and the working pressure of the total air pipeline of the vehicle.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 4 when executing the computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of any one of claims 1 to 4.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1136052A (en) * | 1965-04-05 | 1968-12-11 | Hankison Corp | Drying gas in compressed gas systems |
| CN1471422A (en) * | 2000-11-08 | 2004-01-28 | ���տ�˹�ɷ�����˾ | Method for regulating a compressor installation with a dryer and compressor installation used therewith |
| US20060123743A1 (en) * | 2004-12-10 | 2006-06-15 | Haldex Brake Products Gmbh | Cartridge for cleaning compressed air in compressed air supply systems of motor vehicles |
| CN101522491A (en) * | 2006-10-11 | 2009-09-02 | 威伯科有限公司 | Compressed air supply system and method for determining the parameters of said system |
| JP2011122595A (en) * | 2010-12-27 | 2011-06-23 | Nabtesco Automotive Corp | Compressed air supplying device for vehicle |
| JP2013227924A (en) * | 2012-04-26 | 2013-11-07 | Kobe Steel Ltd | Compression device |
| CN105083299A (en) * | 2015-07-31 | 2015-11-25 | 中国北车集团大同电力机车有限责任公司 | Wind supply method and device for guaranteeing wind used for train |
| CN110497896A (en) * | 2019-08-13 | 2019-11-26 | 中国铁道科学研究院集团有限公司 | Train air supply system and emulsification of lubricant control method |
| CN111169504A (en) * | 2020-01-22 | 2020-05-19 | 中国铁道科学研究院集团有限公司 | Wind source device for rail transit vehicle |
| WO2020175467A1 (en) * | 2019-02-25 | 2020-09-03 | ナブテスコオートモーティブ株式会社 | Air supply system, control method for air supply system, and control program for air supply system |
-
2021
- 2021-02-24 CN CN202110204466.3A patent/CN112963333B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1136052A (en) * | 1965-04-05 | 1968-12-11 | Hankison Corp | Drying gas in compressed gas systems |
| CN1471422A (en) * | 2000-11-08 | 2004-01-28 | ���տ�˹�ɷ�����˾ | Method for regulating a compressor installation with a dryer and compressor installation used therewith |
| US20060123743A1 (en) * | 2004-12-10 | 2006-06-15 | Haldex Brake Products Gmbh | Cartridge for cleaning compressed air in compressed air supply systems of motor vehicles |
| CN101522491A (en) * | 2006-10-11 | 2009-09-02 | 威伯科有限公司 | Compressed air supply system and method for determining the parameters of said system |
| JP2011122595A (en) * | 2010-12-27 | 2011-06-23 | Nabtesco Automotive Corp | Compressed air supplying device for vehicle |
| JP2013227924A (en) * | 2012-04-26 | 2013-11-07 | Kobe Steel Ltd | Compression device |
| CN105083299A (en) * | 2015-07-31 | 2015-11-25 | 中国北车集团大同电力机车有限责任公司 | Wind supply method and device for guaranteeing wind used for train |
| WO2020175467A1 (en) * | 2019-02-25 | 2020-09-03 | ナブテスコオートモーティブ株式会社 | Air supply system, control method for air supply system, and control program for air supply system |
| CN110497896A (en) * | 2019-08-13 | 2019-11-26 | 中国铁道科学研究院集团有限公司 | Train air supply system and emulsification of lubricant control method |
| CN111169504A (en) * | 2020-01-22 | 2020-05-19 | 中国铁道科学研究院集团有限公司 | Wind source device for rail transit vehicle |
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