CN117387827A - Test device capable of accurately providing high wind pressure and measuring wind quantity - Google Patents
Test device capable of accurately providing high wind pressure and measuring wind quantity Download PDFInfo
- Publication number
- CN117387827A CN117387827A CN202311323612.XA CN202311323612A CN117387827A CN 117387827 A CN117387827 A CN 117387827A CN 202311323612 A CN202311323612 A CN 202311323612A CN 117387827 A CN117387827 A CN 117387827A
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- Prior art keywords
- wind
- test
- wind pressure
- air duct
- air
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- 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.)
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Links
- 238000009423 ventilation Methods 0.000 claims description 7
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000004378 air conditioning Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0092—Pressure sensor associated with other sensors, e.g. for measuring acceleration or temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L2019/0053—Pressure sensors associated with other sensors, e.g. for measuring acceleration, temperature
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a test device capable of accurately providing high wind pressure and measuring wind quantity, which comprises a test wind channel, wherein an adjustable electric air valve is arranged in the test wind channel, a wind pressure measuring unit is arranged on the inlet side of the test wind channel, a plurality of wind speed sensors are arranged on the side wall of the outlet side of the test wind channel, and the test device further comprises an electric control system which is electrically connected with the wind pressure measuring unit, the wind speed sensors and the adjustable electric air valve respectively. The invention can improve the amplitude of wind pressure and wind quantity measured by the enthalpy difference laboratory.
Description
Technical Field
The invention relates to the field of air duct test devices, in particular to a test device capable of accurately providing high air pressure and measuring air quantity.
Background
With the improvement of the refrigerating technology capability and the general application of high-voltage direct-current type power supply in China, the use degree of air conditioning equipment with high wind pressure and high wind quantity is more and more, and particularly, the air conditioning equipment with high precision end has small volume and small cold quantity, but has extremely high requirements on wind quantity and wind pressure. For the test and debugging of the air conditioning equipment, the existing enthalpy difference laboratory adopts an induced draft fan to draft or blow to control the wind pressure value in the test air duct, is limited by the performance of the induced draft fan, has a smaller measuring range of the wind quantity and the wind pressure, is generally not more than 0.6kPa, and cannot meet the test and debugging requirements. Example(s)If the air pressure required by the air conditioner is 2.5kPa and the air quantity is 1800m 3 And/h, while the existing enthalpy difference laboratory cannot provide test conditions with a wind pressure of 2.5 kPa.
Disclosure of Invention
The invention provides a test device capable of accurately providing high wind pressure and measuring wind quantity, which aims to solve the problems of small wind quantity and wind pressure measuring range in enthalpy difference laboratories in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the test device capable of accurately providing high wind pressure and measuring the wind quantity is characterized by comprising a test air channel, wherein an adjustable electric air valve is arranged in the test air channel, and the ventilation sectional area in the test air channel is controlled by the adjustable electric air valve; the inlet side of the test air duct is provided with a wind pressure measuring unit, the wind pressure measuring unit comprises a wind pressure sensor and a plurality of three-way pneumatic connectors arranged around the inlet side of the test air duct, one end of one pneumatic connector is connected with the high-pressure end of the wind pressure sensor through a pipeline, one end of each of the other pneumatic connectors except the pneumatic connector connected with the wind pressure sensor is respectively led into the inlet side of the test air duct, the pneumatic connectors are communicated in a loop through a pipeline, and the low-pressure end of the wind pressure sensor is exposed to air; and a plurality of wind speed sensors for detecting the wind speed in the test air duct are arranged on the side wall of the outlet side of the test air duct.
Further, the wind pressure sensor and the wind speed sensor are respectively and electrically connected with the electric control system through signal transmission, and the electric control system is electrically connected with the adjustable electric air valve.
According to the invention, the electric control system is used for controlling the adjustable electric air valve to accurately change the ventilation sectional area in the test air duct, the pneumatic connectors and the air pressure sensors uniformly distributed on the periphery of the test air duct can accurately measure the air pressure value in the test air duct, and the air quantity value in the test air duct can be accurately obtained through the product of the air speed measured by the air speed sensor and the sectional area of the air outlet side in the test air duct. Because the adjustable electric air valve can adjust the ventilation sectional area in the test air duct to a position infinitely close to 0, the air pressure value in the test air duct can be theoretically adjusted to the upper measurement limit of the air pressure sensor, and can generally reach more than 2 kPa.
Compared with the prior art, the invention has the advantages that:
1. the invention is portable and can be suitable for various types of air conditioning devices with various interfaces to test.
2. The sampling tool for the enthalpy difference laboratory can protect the sampling tool for the enthalpy difference laboratory, improve the working time of the enthalpy difference laboratory reaching working conditions, and reduce the use cost of the enthalpy difference laboratory.
3. The invention can improve the amplitude of the wind pressure and the wind quantity measured by the enthalpy difference laboratory, and particularly can keep the accurate test result under the condition that the required test wind pressure is more than 1 kPa.
Drawings
Fig. 1 is a block diagram of an embodiment of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and examples.
As shown in fig. 1, this embodiment discloses a test device capable of accurately providing high wind pressure and measuring wind volume, which comprises a rectangular test wind channel 5, wherein an adjustable electric air valve 6 is installed in the middle position of the test wind channel 5, the valve plate of the adjustable electric air valve 6 is rotatably installed in the middle position of the test wind channel 5, and the ventilation sectional area in the test wind channel 5 can be controlled by rotating the valve plate of the adjustable electric air valve 6.
The inlet side of the test air duct 5 is provided with a wind pressure measuring unit, the wind pressure measuring unit comprises a wind pressure sensor 2 and five pneumatic connectors 3, the five pneumatic connectors 3 are respectively arranged around the inlet side of the test air duct 5, two ends of each pneumatic connector 3 are respectively connected in a loop through a rubber tube 4, so that an induced air loop is formed, the third end of one pneumatic connector is connected with the high-pressure measuring end of the wind pressure sensor 2 through the rubber tube, the low-pressure measuring end of the wind pressure sensor 2 is directly exposed to air, the third ends of the other pneumatic connectors 3 are respectively led into the inlet side of the test air duct 5, and therefore air in the test air duct 5 enters the induced air loop formed by the pneumatic connectors and the rubber tube and finally enters the high-pressure measuring end of the wind pressure sensor 2, and the wind pressure sensor 2 obtains a wind pressure value in the test air duct 5.
Wind speed sensors 7 are respectively arranged on the periphery of the outlet side of the test air duct 5, the sensing ends of the wind speed sensors respectively extend into the outlet side of the test air duct 5, and the wind speed value of the outlet side of the test air duct 5 is measured by the wind speed sensors 7.
The lateral wall in experimental wind channel 5 still installs electrical system 1, and wind pressure sensor 2, wind speed sensor 7 are connected with wind power control system 1 signal transmission electricity respectively, and from this wind pressure value that wind pressure sensor 2 measured sends into electrical system 1, and wind speed value that wind speed sensor 7 measured sends into electrical system 1, and electrical system 1 obtains the amount of wind in the experimental wind channel according to the product of wind speed value and experimental wind channel 5 outlet side ventilation cross-section.
The electric control system 1 is provided with a display screen and can be used for displaying the air quantity and the air pressure numerical value. The electric control system 1 is electrically connected with the adjustable electric air valve 6 in a control manner, the electric control system 1 controls the valve plate of the adjustable electric air valve 6 to rotate, and then the ventilation sectional area inside the experimental air duct 5 is changed, so that the air pressure value and the air volume value inside the experimental air duct 5 are changed, and further the high test air pressure wanted by a user is obtained and the air volume is measured at the same time.
When the high wind pressure air conditioner (the required wind pressure value exceeds 1 kPa) needs to be subjected to a refrigerating capacity test, and the enthalpy difference laboratory cannot provide and measure the required test wind pressure, the test can be performed by applying the invention, and the required high test wind pressure value can be set through the electric control system.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, and the examples described herein are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. The individual technical features described in the above-described embodiments may be combined in any suitable manner without contradiction, and such combination should also be regarded as the disclosure of the present disclosure as long as it does not deviate from the idea of the present invention. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition.
The present invention is not limited to the specific details of the above embodiments, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the protection scope of the present invention without departing from the scope of the technical concept of the present invention, and the technical content of the present invention is fully described in the claims.
Claims (2)
1. The test device capable of accurately providing high wind pressure and measuring the wind quantity is characterized by comprising a test air channel, wherein an adjustable electric air valve is arranged in the test air channel, and the ventilation sectional area in the test air channel is controlled by the adjustable electric air valve; the inlet side of the test air duct is provided with a wind pressure measuring unit, the wind pressure measuring unit comprises a wind pressure sensor and a plurality of three-way pneumatic connectors arranged around the inlet side of the test air duct, one end of one pneumatic connector is connected with the high-pressure end of the wind pressure sensor through a pipeline, one end of each of the other pneumatic connectors except the pneumatic connector connected with the wind pressure sensor is respectively led into the inlet side of the test air duct, the pneumatic connectors are communicated in a loop through a pipeline, and the low-pressure end of the wind pressure sensor is exposed to air; and a plurality of wind speed sensors for detecting the wind speed in the test air duct are arranged on the side wall of the outlet side of the test air duct.
2. The test device capable of accurately providing high wind pressure and measuring wind quantity according to claim 1, further comprising an electric control system, wherein the wind pressure sensor and the wind speed sensor are respectively and electrically connected with signal transmission of the electric control system, and the electric control system is electrically connected with the adjustable electric air valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311323612.XA CN117387827A (en) | 2023-10-13 | 2023-10-13 | Test device capable of accurately providing high wind pressure and measuring wind quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311323612.XA CN117387827A (en) | 2023-10-13 | 2023-10-13 | Test device capable of accurately providing high wind pressure and measuring wind quantity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117387827A true CN117387827A (en) | 2024-01-12 |
Family
ID=89467694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311323612.XA Pending CN117387827A (en) | 2023-10-13 | 2023-10-13 | Test device capable of accurately providing high wind pressure and measuring wind quantity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117387827A (en) |
-
2023
- 2023-10-13 CN CN202311323612.XA patent/CN117387827A/en active Pending
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