CN108007635B - Method for testing micro-positive pressure between locomotive machines - Google Patents
Method for testing micro-positive pressure between locomotive machines Download PDFInfo
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- CN108007635B CN108007635B CN201610933849.3A CN201610933849A CN108007635B CN 108007635 B CN108007635 B CN 108007635B CN 201610933849 A CN201610933849 A CN 201610933849A CN 108007635 B CN108007635 B CN 108007635B
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- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
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Abstract
The invention provides a test method of micro-positive pressure between locomotive machines, which comprises the following steps: dividing the mechanical room into a plurality of areas according to the arrangement condition of equipment in the mechanical room of the locomotive, wherein the space size of the areas is as average as possible, and thus each area is regarded as a test unit; each test unit is provided with a distributed data acquisition host, wherein the distributed data acquisition host is designed by adopting an integrated circuit and a low-voltage technology based on a microprocessing technology and consists of a probe, a transmission cable and a host. Integrating a variety of existing sensors and transmitters (including multiple pressures, temperatures, etc.); by adopting the distributed data acquisition host intercommunication mode, the test process is divided into units, and then the units divide a plurality of test points to simultaneously acquire data, so that the test process is more reasonable, and the defects that if one acquisition host is adopted for acquisition, the test points far away from the host are difficult to arrange, the test point interfaces are limited and the like are overcome.
Description
Technical Field
The invention relates to the technical field of electric locomotives, in particular to a method for testing micro-positive pressure between locomotive machines.
Background
The electric locomotive is characterized in that a plurality of electric devices are arranged in a mechanical room of the electric locomotive, most of the electric devices are strong electric devices, whether the electric devices work safely and normally or not is influenced by the quality of the internal environment of the mechanical room, wherein the existence of micro-positive pressure between the machines is an effective measure, on one hand, the cleanness inside the mechanical room is ensured, and on the other hand, the strong electric devices are ensured to generate a large amount of heat to be discharged outside the locomotive in time. At present, the judgment of micro positive pressure between locomotive machines has no accurate data index, and most of the requirements that the positive pressure between the locomotive machines is not lower than 50P a relative to the outside of the locomotive, and the absolute value of the pressure difference between the locomotive machines and a cab is not more than 150Pa are followed: the above requirements and parameters will be finally determined by prototype performance tests. It is therefore usually proposed as research data. The patent describes a novel test method for micro-positive pressure between locomotive machines, which can effectively and accurately test the micro-positive pressure between the machines, can provide test data reference and research demonstration in the aspect for locomotive design, achieves the proper micro-positive pressure between the machines, ensures the cleanness in the machines and provides comfortable operating environment for drivers and conductors.
Disclosure of Invention
The invention provides a method for testing micro-positive pressure between locomotive machines, which is used for solving the problems in the prior art, provides proper locomotive machine micro-positive pressure data reference and research demonstration for locomotive design through effective and accurate test data, and ensures proper micro-positive pressure environment between machines.
The invention provides a test method of micro-positive pressure between locomotive machines, which comprises the following steps:
dividing the mechanical room into a plurality of areas according to the arrangement condition of equipment in the mechanical room of the locomotive, wherein the space size of the areas is as average as possible, and thus each area is regarded as a test unit;
each test unit is provided with a portable distributed data acquisition host, wherein the portable distributed data acquisition host is designed by adopting an integrated circuit and a low-voltage technology based on a microprocessing technology and consists of a probe, a transmission cable and a host. Integrating a variety of existing sensors and transmitters (including multiple pressures, temperatures, etc.);
in each test unit, a plurality of test points are selected (the number of the test points is not less than 3). Fixing a probe on the selected test points, simultaneously and continuously monitoring a plurality of test points in the unit through the probe, and transmitting the monitoring result to the portable distributed data acquisition host in the unit through a transmission cable;
the portable distributed data acquisition hosts of all the test units in the machine room are interconnected through transmission cables and finally transmitted to a working condition computer through a network cable, and the computer displays information such as pressure, temperature and the like of the current machine room;
similarly, the driver cab and the atmosphere outside the vehicle are respectively regarded as a test unit for monitoring, monitoring data are transmitted to a working condition computer, and the working condition computer calculates the pressure difference between the machinery and the driver cab and the pressure difference between the machinery and the atmosphere outside the vehicle.
The invention provides a method for testing the micro-positive pressure between the locomotives, which can test the micro-positive pressure between the locomotives under static and dynamic working conditions, differentiate the testing process into units by adopting a portable distributed data acquisition host intercommunication mode, and then differentiate a plurality of testing points by the units to simultaneously acquire data, thereby ensuring that the testing process is more reasonable, and avoiding the defects of difficult arrangement of the testing points far away from the host, limited interface of the testing points and the like when one acquisition host is adopted for acquisition.
The method for testing the micro-positive pressure between the locomotive machines has the characteristics of reasonable arrangement of testing instruments, simplicity and convenience, comprehensive, accurate and reliable testing data and the like.
Drawings
FIG. 1 is a flow chart of a method for testing micro-positive pressure between locomotive machinery according to the present invention;
fig. 2 is a system configuration diagram of a method for testing a micro-positive pressure between locomotive machines according to the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
FIG. 1 is a schematic flow chart illustrating a method for testing micro-positive pressure between locomotive machines according to an embodiment of the present invention; as shown in fig. 1, the present invention specifically includes the following steps:
step 101, dividing a mechanical room into a plurality of areas according to the arrangement condition of equipment in the mechanical room of the locomotive, wherein the size of the area space is as average as possible, and each area is set as a test unit; similarly, the cab is set as a test unit, and the atmosphere outside the vehicle is set as a test unit;
102, arranging a portable distributed data acquisition host at a proper position in each test unit;
103, selecting not less than 3 test points in each test unit, fixing a probe, and communicating the probe with the portable distributed data acquisition host of the unit through a transmission cable;
104, interconnecting the portable distributed data acquisition hosts of all the test units in the machine room through transmission cables, and communicating the portable distributed data acquisition hosts with a working condition computer through a network cable;
105, communicating the portable distributed data acquisition host of the cab test unit with a working condition computer through a network cable;
106, communicating the portable distributed data acquisition host of the external atmosphere test unit with a working condition computer through a network cable;
and 107, simultaneously and continuously monitoring all the test points, displaying the information of the pressure, the temperature and the like of each part at present by the working condition computer, and calculating the pressure difference between the machinery and the cab and the atmospheric pressure difference between the machinery and the outside of the vehicle.
The invention provides a method for testing the micro-positive pressure between the locomotives, which can test the micro-positive pressure between the locomotives under static and dynamic working conditions, differentiate the testing process into units by adopting a portable distributed data acquisition host intercommunication mode, and then differentiate a plurality of testing points by the units to simultaneously acquire data, thereby ensuring that the testing process is more reasonable.
Further, in the embodiment shown in fig. 1, the test condition includes two states: when the locomotive is static and moving, equipment in the locomotive is normally started, and leakage between machines is not allowed;
further, in the embodiment shown in fig. 1, the location of the portable distributed data collection host in step 102 is selected in consideration of the moderate distance between the test points.
Further, in the embodiment shown in fig. 1, the test point between machines in step 103 should have 3 points at 1.5m height from the corridor floor, the test point of the cab should have 3 points at 1.5m height from the floor, and the test point of the atmosphere outside the locomotive should have 2 points at which the air pressure near the exhaust outlet of the mechanical room of the locomotive is stable;
further, in the embodiment shown in fig. 1, step 107 may specifically include:
the full-frequency operation of the fan, the starting of the compressor, the recording of data information and the reading of differential pressure;
the full-frequency operation of the fan, the closing of the compressor, the recording of data information and the reading of differential pressure;
the fan operates at half frequency, the compressor is started, data information is recorded, and differential pressure is read;
and (4) operating the fan at half frequency, closing the compressor, recording data information and reading differential pressure.
Referring to fig. 2, fig. 2 is a system configuration diagram illustrating a method for testing a micro-positive pressure between locomotive machines according to an embodiment of the present invention,
the system comprises a sensor 21, a distributed data acquisition host 22, a transmission cable 23, a bus 24 and a working condition computer 25; the sensor 21 is in circuit connection with a distributed data acquisition host 22 through a transmission cable 23;
the sensor 21 is arranged at a testing position of the area where the sensor is arranged and used for monitoring the pressure of the position in real time;
the distributed data acquisition host 22 is in circuit connection with a working condition computer 25 through a bus 24; for transmitting real-time data to the condition computer 25 for data processing;
further, the operating condition computer 25 further includes: and data processing software 26 for performing post-processing calculation on the transmitted data and displaying result information.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. A test method for micro-positive pressure between locomotive machinery is characterized by comprising the following steps:
step 101, dividing a mechanical room into a plurality of areas according to the arrangement condition of equipment in the mechanical room of the locomotive, wherein the size of the area space is as average as possible, and each area is set as a test unit; similarly, the cab is set as a test unit, and the atmosphere outside the vehicle is set as a test unit;
102, arranging a portable distributed data acquisition host at a proper position in each test unit, wherein the portable distributed data acquisition host is designed by adopting an integrated circuit and a low-voltage technology based on a microprocessing technology, consists of a probe, a transmission cable and a host and integrates various pressure and temperature sensors and transmitters;
103, selecting not less than 3 test points in each test unit, fixing a probe, and communicating the probe with the portable distributed data acquisition host of the unit through a transmission cable;
104, interconnecting the portable distributed data acquisition hosts of all the test units in the mechanical room through transmission cables, and communicating the portable distributed data acquisition hosts with a working condition computer through a network cable;
105, communicating the portable distributed data acquisition host of the cab test unit with a working condition computer through a network cable;
106, communicating the portable distributed data acquisition host of the external atmosphere test unit with a working condition computer through a network cable;
and 107, simultaneously and continuously monitoring all the test points, displaying the current pressure and temperature information of each part by the working condition computer, and calculating the pressure difference between the machines and the cab and the atmospheric pressure difference between the machines and the outside of the vehicle.
2. The method of claim 1, wherein the testing points are selected in each testing unit, the probes are fixed on the selected testing points, the testing points in the unit are monitored simultaneously and continuously by the probes, and the monitoring results are transmitted to the portable distributed data acquisition host computer in the unit through the transmission cable, wherein the number of the testing points is greater than or equal to 3.
3. The method for testing the micro-positive pressure between the locomotive machines according to claim 1, wherein the portable distributed data acquisition hosts of the test units in the locomotive machine room are interconnected through transmission cables and finally transmitted to the working condition computer through a network cable, and the computer displays the current pressure and temperature information between the locomotive machines.
4. The method for testing the micro-positive pressure between the locomotive machines according to claim 1, wherein the cab and the atmosphere outside the locomotive are regarded as one test unit respectively for monitoring, the monitoring data are transmitted to a working condition computer, and the working condition computer calculates the pressure difference between the machine and the cab and the pressure difference between the machine and the atmosphere outside the locomotive.
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| CN108007635B true CN108007635B (en) | 2020-08-14 |
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| CN111918422A (en) * | 2019-07-12 | 2020-11-10 | 中车大同电力机车有限公司 | Locomotive front window heating method, device and system, storage medium and electronic equipment |
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Patent Citations (9)
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| CN2760536Y (en) * | 2004-11-30 | 2006-02-22 | 中国南车集团株洲电力机车厂 | Device for testing locomotive cab safe pressure |
| CN1963522A (en) * | 2006-11-03 | 2007-05-16 | 深圳职业技术学院 | A multiple-passage testing system for gas parameter |
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| CN202024855U (en) * | 2011-04-08 | 2011-11-02 | 武汉理工大学 | Portable detecting equipment for pressure gauge on locomotive |
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