CN112177913B - Air compressor testing system - Google Patents
Air compressor testing system Download PDFInfo
- Publication number
- CN112177913B CN112177913B CN202011029222.8A CN202011029222A CN112177913B CN 112177913 B CN112177913 B CN 112177913B CN 202011029222 A CN202011029222 A CN 202011029222A CN 112177913 B CN112177913 B CN 112177913B
- Authority
- CN
- China
- Prior art keywords
- air
- air compressor
- storage tank
- temperature
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 238000007906 compression Methods 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 11
- 238000004364 calculation method Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication 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
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- 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 shedding 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 air storage tank and is communicated with the air 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 arranged on the air storage tank to detect temperature information of the air storage tank. According to the technical scheme, the power performance of the air compressor is divided by the data such as the air pressure information, the temperature information and the like, so that the air compressor which best meets the performance required by construction is screened out, 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 altitude tunnel environment can have significant influence on the performance of the air compressor, and the degree of loss of work capacity is different under different air storage pressures. However, in the prior art, because of lack of experimental data of actual measurement, validity verification of the calculation model cannot be performed, and thus a numerical simulation mode cannot be adopted. The test bench is built in the tunnel to be tested, so that the problems of processing and transportation of the bench exist, and therefore, the air compressor which is most suitable for the performance of the construction requirement cannot be screened out, the construction efficiency is low, and the cost is increased.
Disclosure of Invention
The invention mainly aims to provide an air compressor testing system, which aims to solve the technical problem that the compression efficiency change of an air compressor in different environments cannot be tested in the prior art.
In order to achieve the above purpose, the invention provides an air compressor testing system, which comprises an air compressor, an air storage tank, a vortex shedding 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 air storage tank and is communicated with the air 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 arranged on the air storage tank to detect temperature information of the air storage tank.
Optionally, the air compressor testing system further comprises a sealed cabin, and the air compressor, the air storage tank, the vortex shedding flowmeter and the flow control valve are all arranged in the sealed cabin.
Optionally, 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.
Optionally, an air pressure regulator for regulating the air pressure in the sealed cabin, a temperature regulator for regulating the temperature in the sealed cabin and a humidity regulator for regulating the humidity in the sealed cabin are also arranged in the sealed cabin.
Optionally, the length of the second conduit is at least 15 mm.
Optionally, the length of the third conduit is at least 10 mm.
Optionally, the air pressure of the flow control valve is 0.1 Mpa-0.9 Mpa.
Optionally, the air compressor testing system further includes a third temperature sensor, where the third temperature sensor is disposed on the first pipeline to detect an exhaust temperature of the air compressor.
Optionally, the air compressor testing system further comprises a heat conducting adhesive and a heat insulation cover, wherein the heat conducting adhesive is arranged between the third temperature sensor and the first pipeline, and the heat insulation cover is arranged on the third temperature sensor.
Optionally, the air compressor testing system further includes a controller and a calculation module, the controller is electrically connected with the vortex shedding flowmeter, the flow control valve, the first pressure sensor and the first temperature sensor respectively, the controller is used for receiving and sending the flow information, the density information, the air pressure information and the temperature information to the calculation module, and the calculation module is used for calculating the air compression energy of the air compressor according to the air pressure information and the temperature information.
According to the technical scheme, the air compressor compresses and conveys air into the air storage tank, and the first pressure sensor and the first temperature sensor collect air pressure information and temperature information in the air storage tank, so that the power performance of the air compressor is divided by data such as the air pressure information and the temperature information, and the air compressor which best meets the performance of construction requirements is screened out, 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 that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a testing system of an air compressor of the present invention.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 10 | Air compressor | 20 | Air storage tank |
| 21 | First temperature sensor | 22 | First pressure sensor |
| 30 | Vortex street flowmeter | 40 | Flow control valve |
| 50 | First pipeline | 60 | Second pipeline |
| 70 | Third pipeline | 80 | Sealed cabin |
| 81 | Second temperature sensor | 82 | Second pressure sensor |
| 90 | Third temperature sensor |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides an air compressor testing system, referring 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 communicates with the vortex shedding flowmeter 30 through a third conduit 70. The first pressure sensor 22 is connected with the air storage tank 20 to detect air pressure information of the air storage 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 hole and an air outlet hole, the air outlet hole is communicated with the air storage tank 20 through the first pipeline 50, gas is led into the air compressor 10 from the air inlet hole, the air compressor 10 compresses the gas and then leads the compressed gas into the air storage tank 20 through the air outlet hole, the air storage tank 20 is used for simulating to store the compressed gas, the air storage tank 20 leads the compressed gas out through the pipeline, wherein the vortex shedding flowmeter is arranged on the pipeline to detect the temperature and the pressure of the gas in the air storage tank 20 and keep 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 gas and the density information of the gas, 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, so that the compression efficiency of the air compressor 10 is calculated according to the flow 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 all changed in real time and the gas exchanges with the outside with the amount of work and heat during the compression of the gas by the air compressor 10. However, in a general practical process, the state change of the gas often follows a certain rule, so the working process of the air compressor 10 is regarded as a polytropic process, and the polytropic exponent m is expressed as:
wherein,
T 1 represents ambient temperature, unit: k, performing K;
T 2 the temperature of the gas in the gas tank 20, that is, the temperature information, is expressed in units of: k, performing K;
P 1 represents the ambient pressure, unit: pa;
P 2 representing the gas pressure in the gas tank 20, i.e. the gas pressure information, in units of: pa;
in practical application, air at normal temperature and pressure less than 10MPa is taken as ideal gas, in this embodiment, the work done by the air compressor 10 on the gas is calculated according to the variable process of the ideal gas, and at this time, the work wi (J/kg) of the gas compression process is:
the mass flow rate qm (kg/h) of the air compressor is:
wherein,
Q d representing the air displacement, namely the flow information, m3/h;
R g air gas constant, rg=287J/(kg·k);
the compressed air energy N of the compressed air at the moment i (W), i.e. the compression efficiency is:
N i ＝3600×w i ×q m ；
as can be seen from the calculation process, the compression 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 (1899 m) is used as a reference, dimensionless treatment is carried out on the compression energy of the air compressor 10 at a high altitude (construction environment, 4000 m), so that the loss of the working capacity of the air compressor 10 at different air storage pressures is obtained, and when the air storage pressure is 0.45MPa, the loss of the working capacity in a plateau tunnel environment is 19% compared with that in a plain environment; with the increase of the gas storage pressure, the work capacity loss is increased, and when the gas storage pressure reaches 0.7MPa, the work capacity loss is increased to 63%, so that the working performance of pneumatic equipment is obviously affected. It can be seen that the plateau tunnel environment has a significant impact on the performance of the air compressor 10, but at different air storage pressures the extent of its loss of work capacity is different. With the increase of the gas storage pressure, the loss of the working capacity is increased to 63% from 19%, and the output of the compression energy is obviously reduced. The reduction in compression energy for the air compressor 10 is primarily due to the low pressure environment of the altitude and the low quality air in the tunnel. The reduction of air pressure leads to the reduction of air density, the increase of mechanical heat load, the rise of temperature of the compressed air, and the reduction of quality and work capacity of the air in the air storage tank 20 caused by thermal expansion; meanwhile, due to the construction of internal combustion machines such as an excavator and a loader and the operation of pneumatic tools such as a pneumatic pick, a pneumatic rock drill, a pneumatic drill and a guniting machine in a tunnel, the air quality is obviously reduced, the particles are increased, the pollution degree of an air filter is increased, and meanwhile, the air inlet resistance is increased, so that the working efficiency of the compressor is reduced.
It should be noted that, as an embodiment, during the calculation, the ambient temperature and the ambient pressure may be obtained through the internet, for example, refer to local weather forecast information and the like.
As another embodiment, the air compressor testing system further includes a sealing cabin 80, the air compressor 10, the air storage tank 20, the vortex shedding flowmeter 30, and the flow control valve are all disposed in the cabin of the sealing cabin 80, and the whole testing process is performed in the sealing cabin 80, so as to reduce interference of external factors and improve the accuracy and reliability of the testing, in addition, a second temperature sensor 81 and a second air pressure sensor are further disposed in the sealing cabin 80, the second air pressure sensor is used for detecting air pressure in the sealing cabin 80, and the second temperature sensor 81 is used for detecting temperature in the sealing cabin 80, and by detecting temperature, air pressure information in the cabin in real time, the accuracy and reliability of the air compressor testing system of the invention are further improved.
As yet another embodiment, the seal cabin 80 is further provided therein with an air pressure regulator for regulating the air pressure in the seal cabin, a temperature regulator for regulating the temperature in the seal cabin, and a humidity regulator for regulating the humidity in the seal cabin, and in this embodiment, parameters such as the air pressure, the thermometer humidity in the seal cabin 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, etc., thereby realizing the compression efficiency of the air compressor 10 under different application environments, and improving the wide applicability of the air compressor testing system of the present invention.
Further, in order to further improve the testing accuracy of the air compressor testing system of the present invention, compatibility between each component needs to be improved first to achieve an optimal testing effect, for example, in this embodiment, the nominal diameter of the vortex shedding flowmeter 30 may be DN80; and according to the installation requirement, 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 air storage tank 20, the vortex shedding flowmeter 30 and the flow control valve 40 are ensured not to have any throttling phenomenon; the operating pressure range of the flow control valve 40 may be set to 0.1Mpa to 0.9Mpa, etc.; in addition, the accuracy of reading can be improved by selecting parts in a corresponding measuring range, so that the testing accuracy of the air compressor testing system is indirectly improved, for example, for a thermometer, the environment temperature is 0-40 ℃, and digital display or wall hanging type can be selected; the temperature of the gas in the gas storage tank 20 is not high, and is generally 0-60 ℃, and the first temperature sensor 21 can select a PT100 thermal resistance thermometer; the pressure range of the air storage tank 20 is 0-0.9 Mpa, and the first pressure sensor 22 is a pointer type or digital display type pressure gauge with the measuring range of 0-1 Mpa. It should be noted that the present invention includes but is not limited to the above-mentioned scheme, and the reading range of the components needs to be adjusted according to the specific situation so as to meet the testing requirement.
According to the technical scheme of the invention, the air compressor 10 compresses and conveys air into the air storage tank 20, and the first pressure sensor 22 and the first temperature sensor 21 collect air pressure information and temperature information in the air storage tank 20, so that the power performance of the air compressor 10 is divided by the data such as the air pressure information and the temperature information, and the air compressor 10 which is most in line with the performance required by construction is screened out, the construction efficiency is improved, and the cost is reduced.
Further, the object to be measured includes the temperature and the pressure of the test environment, and the air compressor test system further includes a third temperature sensor 90, and 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 disposed 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 is 0-110 ℃, a K-type thermocouple thermometer, such as a portable digital thermometer DM6902, is selected, and the 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 a heat-conducting adhesive and a heat-insulating cover, the heat-conducting adhesive is disposed between the third temperature sensor 90 and the first pipeline 50, and the heat-insulating cover is disposed on the third temperature sensor 90, so as to improve the collection precision of the third temperature sensor 90.
Further, the air compressor testing system further comprises a controller and a calculation module, wherein the controller is respectively and electrically connected with the vortex shedding flowmeter, the flow control valve, the first pressure sensor 22 and the first temperature sensor 21, and is used for receiving and sending the flow information, the density information, the air pressure information and the temperature information to the calculation module, and the calculation module is used for calculating the air compression energy of the air compressor 10 according to the air pressure information and the temperature information. The vortex shedding flowmeter 30, the flow control valve, the first pressure sensor 22 and the first temperature sensor 21 send data to the controller, and the controller controls the calculation module to calculate, so that automatic test is realized, the calculation module directly outputs a test result, the test result is displayed in a more visual mode, and the convenience is improved. In this embodiment, the environmental temperature, the environmental pressure, etc. required for calculation may be obtained from the local weather forecast information by setting a communication module in a network manner, or may be obtained by electrically connecting the controller with the second temperature sensor 81 and the second air pressure sensor.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (8)
1. An air compressor machine test system, its 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 shedding flowmeter is arranged at the downstream of the gas storage tank and is communicated with the gas storage tank through a second pipeline for detecting the flow information of the gas;
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, 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;
the first temperature sensor is arranged on the air storage tank to detect temperature information of the air storage tank;
the air compressor testing system further comprises a sealing bin, and the air compressor, the air storage tank, the vortex shedding flowmeter and the flow control valve are all arranged in the sealing bin;
the sealing bin is internally provided with a second temperature sensor and a second air pressure sensor, the second air pressure sensor is used for detecting air pressure in the sealing bin, and the second temperature sensor is used for detecting temperature in the sealing bin.
2. The air compressor testing system of claim 1, wherein the seal cartridge is further provided with an air pressure regulator for regulating air pressure in the seal cartridge, a temperature regulator for regulating temperature in the seal cartridge, and a humidity regulator for regulating humidity in the seal cartridge.
3. The air compressor testing system of claim 1, wherein the second conduit has a length of at least 15 millimeters.
4. The air compressor testing system of claim 1, wherein the third conduit has a length of at least 10 millimeters.
5. The air compressor testing system of claim 1, wherein the air pressure of the flow control valve is 0.1Mpa to 0.9Mpa.
6. The air compressor testing system of claim 1, further comprising a third temperature sensor disposed on the first conduit to detect an exhaust temperature of the air compressor.
7. The air compressor testing system of claim 6, further comprising a heat conductive adhesive disposed between the third temperature sensor and the first conduit and a heat retaining cover disposed over the third temperature sensor.
8. The air compressor testing system of claim 1, further comprising a controller and a computing module, wherein the controller is electrically connected to the vortex shedding flowmeter, the flow control valve, the first pressure sensor, and the first temperature sensor, respectively, and is configured to receive and send the flow information, the density information, the air pressure information, and the temperature information to the computing module, and the computing module is configured to calculate air compression energy of the air compressor according to the air pressure information and the temperature information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011029222.8A CN112177913B (en) | 2020-09-25 | 2020-09-25 | Air compressor testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011029222.8A CN112177913B (en) | 2020-09-25 | 2020-09-25 | Air compressor testing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112177913A CN112177913A (en) | 2021-01-05 |
| CN112177913B true CN112177913B (en) | 2024-03-15 |
Family
ID=73943540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011029222.8A Active CN112177913B (en) | 2020-09-25 | 2020-09-25 | Air compressor testing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112177913B (en) |
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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112177913A (en) | 2021-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102563362B (en) | Compressed air system and intelligent pipe network leakage detecting method for same | |
| CN201867290U (en) | Air tightness testing device for automobile air-conditioning box | |
| CN104729637B (en) | A kind of turbine flowmeter on-line calibration system and calibration method | |
| CN102944358B (en) | High and low temperature vacuum calibrating device and method | |
| CN103091175B (en) | Outside-test hydraulic pressure test method | |
| CN102589809B (en) | Portable leak detector calibration system and method | |
| CN207231786U (en) | A kind of air-valve comprehensive performance test device | |
| CN101526419A (en) | Flow characteristics test method and device of a plate-fin heat exchanger fin | |
| CN202522295U (en) | System for calibrating turbine flow meter under condition of large flow of low-temperature medium | |
| Mohtar et al. | Describing uncertainties encountered during laboratory turbocharger compressor tests | |
| CN108020384B (en) | Sintering machine ontology inleakage equivalent detecting method based on fluid energy conservation | |
| CN213627957U (en) | Air compressor machine test system | |
| CN112177913B (en) | Air compressor testing system | |
| CN214378516U (en) | Hydrogen circulation testing device of fuel cell | |
| CN106289372A (en) | Welded insulated gas cylinder Daily boil-off-rate measuring instrument method of testing | |
| CN111307404B (en) | Device and method for testing internal flow field of jet fan | |
| CN203259337U (en) | High-temperature valve detection test system | |
| CN202442118U (en) | Intelligent pipe network leakage detection system for compressed air system | |
| CN102879037B (en) | Verifying device for gas drainage comprehensive parameter tester | |
| CN109738665B (en) | Pitot tube-based flow velocity automatic measurement method | |
| CN208621988U (en) | A kind of high/low temperature gas flow standard device | |
| CN111289064A (en) | Online calibrating device and method for metering performance of hydrogenation machine | |
| CN212807256U (en) | Device for detecting gas meter with temperature and pressure conversion function | |
| CN205262537U (en) | Measure device of irregular solid volume | |
| CN211904339U (en) | On-line detection standard device for small-flow gas flowmeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |