CN112177913A - Air compressor machine test system - Google Patents
Air compressor machine test system Download PDFInfo
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- CN112177913A CN112177913A CN202011029222.8A CN202011029222A CN112177913A CN 112177913 A CN112177913 A CN 112177913A CN 202011029222 A CN202011029222 A CN 202011029222A CN 112177913 A CN112177913 A CN 112177913A
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- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 238000004364 calculation method Methods 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 12
- 238000007906 compression Methods 0.000 description 10
- 230000006835 compression Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000005259 measurement Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001914 calming effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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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
- F04B51/00—Testing machines, pumps, or pumping installations
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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
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention provides an air compressor testing system which comprises an air compressor, an air storage tank, a vortex flowmeter, a flow control valve, a first pressure sensor and a first temperature sensor, wherein the air storage tank is arranged at the downstream of the air compressor and is communicated with the air compressor through a first pipeline; the vortex shedding flowmeter is arranged at the downstream of the gas storage tank and is communicated with the gas storage tank through a second pipeline; the flow control valve is arranged at the downstream of the vortex shedding flowmeter and is communicated with the vortex shedding flowmeter through a third pipeline. The first pressure sensor is connected with the air storage tank to detect air pressure information of the air storage tank; the first temperature sensor is disposed on the gas tank to detect temperature information of the gas tank. According to the technical scheme, the air compressors which best meet the construction requirement performance are screened out by dividing the air compressor power performance into the air pressure information, the temperature information and other data, so that the construction efficiency is improved, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to an air compressor testing system.
Background
The plateau tunnel environment can cause significant influence on the performance of the air compressor, and the loss degree of the work capacity under different gas storage pressures is different. However, in the prior art, due to the lack of actual measurement experimental data, the validity of the calculation model cannot be verified, and therefore, a numerical simulation mode cannot be adopted. And will be in the inside of construction tunnel set up the dynamometer laboratory bench and test then have the problem in the aspect of the processing and the transportation of experiment rack to can't select the air compressor machine that accords with the construction requirement performance most, lead to that efficiency of construction is lower, and the cost improves.
Disclosure of Invention
The invention mainly aims to provide an air compressor testing system, and aims to solve the technical problem that the variation of the compression efficiency of an air compressor in operation under different environments cannot be tested in the prior art.
In order to achieve the purpose, the invention provides an air compressor testing system which comprises an air compressor, an air storage tank, a vortex flowmeter, a flow control valve, a first pressure sensor and a first temperature sensor, wherein the air storage tank is arranged at the downstream of the air compressor and is communicated with the air compressor through a first pipeline; the vortex shedding flowmeter is arranged at the downstream of the gas storage tank and is communicated with the gas storage tank through a second pipeline; the flow control valve is arranged at the downstream of the vortex flowmeter and is communicated with the vortex flowmeter through a third pipeline. The first pressure sensor is connected with the air storage tank to detect air pressure information of the air storage tank; the first temperature sensor is arranged on the air storage tank to detect temperature information of the air storage tank.
Optionally, the air compressor machine test system still includes the sealed cabin, the air compressor machine, the gas holder, the vortex street flowmeter the flow control is sent all to be set up in the sealed cabin.
Optionally, still be equipped with second temperature sensor and second atmospheric pressure sensor in the sealed storehouse, second atmospheric pressure sensor is used for detecting sealed storehouse internal gas pressure, second temperature sensor is used for detecting temperature in the sealed storehouse.
Optionally, an air pressure regulator for regulating air pressure in the sealed accommodating cavity, a temperature regulator for regulating temperature in the sealed accommodating cavity, and a humidity regulator for regulating humidity in the sealed accommodating cavity are further arranged in the sealed cabin.
Optionally, the second conduit has a length of at least 15 mm.
Optionally, the third conduit is at least 10 mm in length.
Optionally, the pressure of the flow control valve is 0.1Mpa to 0.9 Mpa.
Optionally, the air compressor machine test system further includes a third temperature sensor, and the third temperature sensor is arranged on the first pipeline to detect the exhaust temperature of the air compressor machine.
Optionally, the air compressor testing system further comprises a heat conducting glue and a heat preservation cover, the heat conducting glue is arranged between the third temperature sensor and the first pipeline, and the heat preservation cover covers the third temperature sensor.
Optionally, the air compressor machine test system still includes controller and calculation module, the controller respectively with the vortex street flowmeter the flow control send, first pressure sensor and first temperature sensor electricity is connected, the controller be used for receiving and with flow information the density information atmospheric pressure information and temperature information send to calculation module, calculation module is used for the basis atmospheric pressure information and the temperature information calculates the compressed air energy of air compressor machine.
According to the technical scheme, the air compressor compresses air and conveys the air into the air storage tank, and the air pressure information and the temperature information in the air storage tank are collected through the first pressure sensor and the first temperature sensor, so that the air compressor which best meets the construction requirement performance is screened out through dividing the air compressor power performance into the air compressor power performance and other data, the construction efficiency is improved, and the cost is reduced.
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 or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an air compressor testing system according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
20 | |
| 21 | |
22 | |
| 30 | Vortex |
40 | |
| 50 | |
60 | |
| 70 | |
80 | Sealed |
| 81 | |
82 | |
| 90 | Third temperature sensor |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
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.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides an air compressor testing system, please refer to fig. 1, the air compressor testing system comprises an air compressor 10, an air storage tank 20, a vortex shedding flowmeter 30, a flow control valve 40, a first pressure sensor 22 and a first temperature sensor 21, wherein the air storage tank 20 is arranged at the downstream of the air compressor 10 and is communicated with the air compressor 10 through a first pipeline 50; the vortex shedding flowmeter 30 is arranged at the downstream of the air storage tank 20 and is communicated with the air storage tank 20 through a second pipeline 60; the flow control valve 40 is disposed downstream of the vortex shedding flowmeter 30 and is in communication with the vortex shedding flowmeter 30 via a third conduit 70. The first pressure sensor 22 is connected to the air tank 20 to detect the air pressure information of the air tank 20; the first temperature sensor 21 is provided on the air tank 20 to detect temperature information of the air tank 20.
The air compressor 10 is provided with an air inlet and an air outlet, the air outlet is communicated with the air storage tank 20 through the first pipeline 50, air is introduced into the air compressor 10 from the air inlet, the air compressor 10 compresses the air and then introduces the compressed air into the air storage tank 20 through the air outlet, the air storage tank 20 is used for simulating the storage of the compressed air, the air storage tank 20 leads the compressed air out through a pipeline, wherein the vortex street flowmeter is arranged on the pipeline to detect the temperature and the pressure of the air in the air storage tank 20 and maintain the volume flow of the air storage tank 20 under the stable pressure, the flow control valve 40 is used for detecting the flow information of the led-out air and the density information of the air, and detecting the temperature information and the pressure information in the air storage tank 20 through the first pressure sensor 22 and the first temperature sensor 21, thereby calculating the compression efficiency of the air compressor 10 according to the flow rate information, the density information, the air pressure information, and the temperature information.
In the above process, the air compressor 10 compresses the gas and cools the gas, so that parameters such as pressure, volume and temperature of the gas are changed in real time in the process of compressing the gas by the air compressor 10, and the gas exchanges work and heat with the outside. However, in a general practical process, the state change of the gas often follows a certain rule, and therefore, the work application process of the air compressor 10 is regarded as a variable process, and the variable exponent m is expressed as:
wherein the content of the first and second substances,
T1represents ambient temperature, in units: k;
T2showing the inside of the gas tank 20The gas temperature of (a), that is, the temperature information, unit: k;
P1represents ambient pressure, in units: pa;
P2the unit representing the gas pressure within the gas container 20, i.e., the gas pressure information: pa;
in practical application, the air at normal temperature and with a pressure less than 10MPa is considered as an ideal gas, in this embodiment, the work done by the air compressor 10 on the gas is calculated according to the variable work done by the ideal gas, and at this time, the work wi (J/kg) in the gas compression process is:
the mass flow rate qm (kg/h) of the air compressor is:
wherein the content of the first and second substances,
Qdrepresents the empty displacement, i.e. the flow information, m 3/h;
Rgrepresents the gas constant of air, Rg 287J/(kg · K);
the compressed air energy N of the compressed air at the momenti(W), i.e., the compression efficiency, is:
Ni＝3600×wi×qm；
it can be seen from the calculation process that the compressed air energy of the compressed air can be used as an evaluation index of the performance of the air compressor 10. In the embodiment, the compression energy of the air compressor 10 at a low altitude (1899m) is taken as a reference, dimensionless processing is performed on the compression energy of the air compressor 10 at a high altitude (construction environment, 4000m) to obtain the work capacity loss of the air compressor 10 at different air storage pressures, and when the air storage pressure is 0.45MPa, the work capacity loss in the plateau tunnel environment is 19% compared with that in the plain environment; along with the increase of the gas storage pressure, the loss of the work capacity is aggravated, when the gas storage pressure reaches 0.7MPa, the loss of the work capacity is increased to 63 percent, and the working performance of the pneumatic equipment is obviously influenced. It can be seen that the plateau tunnel environment has a significant impact on the performance of the air compressor 10, but the loss of work capacity is different at different air storage pressures. Along with the increase of the gas storage pressure, the work capacity loss is increased to 63 percent from the original 19 percent, and the output of the compression energy is obviously reduced. For the air compressor 10, the reduction of the compression energy is mainly caused by the low pressure environment in the highland and the low quality air in the tunnel. The reduction of air pressure leads to the reduction of air density, mechanical heat load is improved, the temperature of the gas rises after compression, and further the gas in the gas storage tank 20 is reduced in quality and reduced in work capacity due to thermal expansion; meanwhile, due to the construction of internal combustion machines such as excavators and loaders and the operation of pneumatic tools such as pneumatic picks, pneumatic rock drills, pneumatic drills and slurry sprayers, the air quality is remarkably reduced, the particulate matters are increased, the air filter pollution degree is intensified, the air inlet resistance is increased, and the working efficiency of the compressor is reduced.
It should be noted that, as an example, in the calculation process, the ambient temperature and the ambient pressure may be obtained through internet, for example, referring to local weather forecast information.
As another embodiment, the air compressor testing system further includes a sealed bin 80, the air compressor 10, the air storage tank 20, the vortex shedding flowmeter 30 and the flow control generator are all disposed in the sealed bin 80, and the whole testing process is performed in the sealed bin 80, so that interference of external factors is reduced, and accuracy and reliability of the testing are improved.
As another embodiment, an air pressure regulator for regulating air pressure in the sealed accommodating cavity, a temperature regulator for regulating temperature in the sealed accommodating cavity, and a humidity regulator for regulating humidity in the sealed accommodating cavity are further disposed in the sealed chamber 80, in this embodiment, parameters such as air pressure, temperature and humidity of the sealed chamber 80 are changed by adjusting the air pressure regulator, the temperature regulator and the humidity regulator in a matching manner, so as to simulate different application environments, such as a plateau environment, and test compression efficiency of the air compressor 10 in different application environments, thereby improving wide applicability of the air compressor test system of the present invention.
Further, in order to further improve the testing accuracy of the air compressor testing system of the present invention, firstly, the compatibility between each component needs to be improved to achieve an optimal testing effect, for example, in this embodiment, the nominal diameter of the vortex shedding flowmeter 30 may adopt DN 80; according to installation requirements, the length of the second pipeline 60 is at least 15 mm, and the length of the third pipeline 70 is at least 10 mm, so that the connecting pipelines among the gas storage tank 20, the vortex shedding flowmeter 30 and the flow control valve 40 are ensured not to have any throttling phenomenon; the working pressure range of the flow control valve 40 can be set to be 0.1 MPa-0.9 MPa and the like; in addition, the reading accuracy can be improved by selecting parts in corresponding measurement ranges, so that the testing accuracy of the air compressor testing system is indirectly improved, for example, for a thermometer, the ambient temperature is 0-40 ℃, and digital display or wall-mounted type can be selected; the temperature of the gas in the gas storage tank 20 is not high, generally 0-60 ℃, and the first temperature sensor 21 can be a PT100 thermal resistance thermometer; the pressure range of the gas storage tank 20 is 0-0.9 MPa, and the first pressure sensor 22 can be a pointer type or digital display type pressure gauge with the measurement range of 0-1 MPa. It should be noted that, the present invention includes but is not limited to the above solutions, and the reading range adopted by the components and parts is further adjusted according to specific situations to meet the testing requirements.
According to the technical scheme, the air compressor 10 compresses air and transmits the air to the air storage tank 20, air pressure information and temperature information in the air storage tank 20 are collected through the first pressure sensor 22 and the first temperature sensor 21, and therefore the power performance of the air compressor 10 is divided according to data such as the air pressure information and the temperature information, the air compressor 10 which best meets the construction requirement performance is screened out, construction efficiency is improved, and cost is reduced.
Further, the object to be measured includes the temperature and pressure of the test environment, and the air compressor testing system further includes a third temperature sensor 90, where the third temperature sensor 90 is disposed on the first pipeline 50 to detect the exhaust temperature of the air compressor 10. The third temperature sensor 90 is arranged at the position of the air outlet of the air compressor 10 to detect the exhaust temperature of the air compressor 10 in real time, so as to ensure that the exhaust has enough pressure during testing, the temperature range of the third temperature sensor is 0-110 ℃, a K-type thermocouple thermometer such as a portable digital thermometer DM6902 can be selected, a thermocouple is tightly attached to the first pipeline 50 between the air compressor 10 and the air storage tank 20 during installation, in addition, the air compressor testing system further comprises heat-conducting glue and a heat-insulating cover, the heat-conducting glue is arranged between the third temperature sensor 90 and the first pipeline 50, and the heat-insulating cover is covered on the third temperature sensor 90, so that the acquisition precision of the third temperature sensor 90 is improved.
Further, the air compressor machine test system still includes controller and calculation module, the controller respectively with the vortex street flowmeter, flow control send, first pressure sensor 22 and first temperature sensor 21 electricity is connected, the controller is used for receiving and will flow information, density information, atmospheric pressure information and temperature information send to the calculation module, the calculation module is used for according to atmospheric pressure information and the temperature information calculate the ability of calming anger of air compressor machine 10. Vortex flowmeter 30 flow control send first pressure sensor 22 and first temperature sensor 21 all sends data to the controller, again by controller control the calculation module calculates to realize automatic test, through calculation module direct output test result shows with more audio-visual mode, improves convenient degree. It should be noted that, in this embodiment, the ambient temperature, the ambient pressure, and the like required for calculation may be obtained from local weather forecast information in a network manner by providing a communication module, or obtained by electrically connecting the controller with the second temperature sensor 81 and the second air pressure sensor.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides an air compressor machine test system which characterized in that, air compressor machine test system includes:
an air compressor;
the air storage tank is arranged at the downstream of the air compressor and is communicated with the air compressor through a first pipeline;
the vortex street flowmeter is arranged at the downstream of the gas storage tank, is communicated with the gas storage tank through a second pipeline and is used for detecting the flow information of gas;
the flow control valve is arranged at the downstream of the vortex flowmeter, is communicated with the vortex flowmeter through a third pipeline and is used for detecting the density information of the gas;
the first pressure sensor is connected with the air storage tank to detect air pressure information of the air storage tank;
a first temperature sensor disposed on the gas storage tank to detect temperature information of the gas storage tank.
2. The air compressor testing system of claim 1, further comprising a sealed cabin, wherein the air compressor, the air storage tank, the vortex shedding flowmeter and the flow control generator are all arranged in the sealed cabin.
3. The air compressor testing system according to claim 2, wherein a second temperature sensor and a second air pressure sensor are further arranged in the sealed cabin, the second air pressure sensor is used for detecting air pressure in the sealed cabin, and the second temperature sensor is used for detecting temperature in the sealed cabin.
4. The air compressor testing system according to claim 2, wherein an air pressure regulator for regulating air pressure in the sealed accommodating cavity, a temperature regulator for regulating temperature in the sealed accommodating cavity, and a humidity regulator for regulating humidity in the sealed accommodating cavity are further arranged in the sealed bin.
5. The air compressor test system of claim 1, wherein the length of the second pipeline is at least 15 millimeters.
6. The air compressor test system of claim 1, wherein the third conduit is at least 10 millimeters in length.
7. The air compressor testing system of claim 1, wherein the air pressure of the flow control valve is 0.1 Mpa-0.9 Mpa.
8. The air compressor test system of claim 1, further comprising a third temperature sensor disposed on the first pipeline to detect a discharge temperature of the air compressor.
9. The air compressor testing system of claim 8, further comprising a heat-conducting glue disposed between the third temperature sensor and the first pipeline, and a heat-insulating cover disposed over the third temperature sensor.
10. The air compressor testing system of claim 1, further comprising a controller and a calculation module, wherein the controller is electrically connected to the vortex street flow meter, the flow control unit, the first pressure sensor and the first temperature sensor, the controller is configured to receive and send the flow information, the density information, the air pressure information and the temperature information to the calculation module, and the calculation module is configured to calculate air pressure energy of the air compressor according to the air pressure information and the temperature information.
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| CN202011029222.8A CN112177913B (en) | 2020-09-25 | 2020-09-25 | Air compressor testing system |
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| CN202011029222.8A CN112177913B (en) | 2020-09-25 | 2020-09-25 | Air compressor testing system |
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| CN112177913B CN112177913B (en) | 2024-03-15 |
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| CN204627956U (en) * | 2015-04-08 | 2015-09-09 | 常州信息职业技术学院 | Air Compressor Test detection device |
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| CN109763972A (en) * | 2019-03-08 | 2019-05-17 | 中通客车控股股份有限公司 | A kind of electric motor coach air compressor test macro and method |
| WO2020012829A1 (en) * | 2018-07-10 | 2020-01-16 | 株式会社日立産機システム | Compressor and monitoring system |
| CN110748478A (en) * | 2018-07-24 | 2020-02-04 | 成都禹泽科技有限公司 | Air compressor machine performance testing platform |
| CN211259013U (en) * | 2019-09-02 | 2020-08-14 | 深圳台盛节能科技有限公司 | Energy-saving operation monitoring system of screw air compressor |
| CN213627957U (en) * | 2020-09-25 | 2021-07-06 | 中铁二十局集团有限公司 | Air compressor machine test system |
-
2020
- 2020-09-25 CN CN202011029222.8A patent/CN112177913B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204627956U (en) * | 2015-04-08 | 2015-09-09 | 常州信息职业技术学院 | Air Compressor Test detection device |
| CN205618344U (en) * | 2016-04-20 | 2016-10-05 | 福建奉田信新能源科技有限公司 | Test bench of test new forms of energy vehicle air compressor machine |
| WO2020012829A1 (en) * | 2018-07-10 | 2020-01-16 | 株式会社日立産機システム | Compressor and monitoring system |
| CN110748478A (en) * | 2018-07-24 | 2020-02-04 | 成都禹泽科技有限公司 | Air compressor machine performance testing platform |
| CN109763972A (en) * | 2019-03-08 | 2019-05-17 | 中通客车控股股份有限公司 | A kind of electric motor coach air compressor test macro and method |
| CN211259013U (en) * | 2019-09-02 | 2020-08-14 | 深圳台盛节能科技有限公司 | Energy-saving operation monitoring system of screw air compressor |
| CN213627957U (en) * | 2020-09-25 | 2021-07-06 | 中铁二十局集团有限公司 | Air compressor machine test system |
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| CN112177913B (en) | 2024-03-15 |
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