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CN-122016228-A - Multi-working-condition sand blast test system and method for active induced draft products

CN122016228ACN 122016228 ACN122016228 ACN 122016228ACN-122016228-A

Abstract

The invention discloses a multi-working-condition sand blast test system and method for an active air suction product, and belongs to the technical field of environment simulation tests. The system comprises a test cabin, a dust generation system, a monitoring system and a closed-loop control system, wherein the spraying direction of the dust generation system faces to the air suction surface of an electromechanical product, the monitoring system at least comprises a dust concentration sensor, and the closed-loop control system is respectively connected with the monitoring system and the dust generation system and is used for dynamically adjusting the output of the dust generation system according to real-time concentration feedback so as to maintain the dust concentration within a preset range. The method comprises the steps of installing a product to enable an air suction surface to face a dust generating system, starting the dust generating system to spray sand and dust, starting the product to actively suck the dust, dynamically adjusting and maintaining stable concentration through a closed-loop control system, monitoring state parameters of the product in the test process, and evaluating performance. The invention truly simulates the coupling working condition of the product for actively sucking the dust-containing air flow, realizes the accurate cooperative control of multiple parameters, improves the simulation authenticity and the test reliability, and is suitable for the wind and sand prevention performance test of the active air suction type product.

Inventors

  • GOU YANBO
  • JIANG JIARONG
  • Mao haifu

Assignees

  • 湖南联诚轨道装备有限公司
  • 湖南铁科检测技术有限公司

Dates

Publication Date
20260512
Application Date
20260312

Claims (10)

  1. 1. A multiplex condition sand blast test system for initiative class product that induced drafts, characterized in that includes: the test cabin (1) is used for accommodating active induced draft electromechanical products to be tested; a dust generating system (2) with a spraying direction configured to face the suction surface of the electromechanical product for spraying sand and dust into the test chamber (1) to simulate a dust-containing airflow environment; The monitoring system (3) at least comprises a dust concentration sensor (31) for monitoring the concentration of sand and dust in the test cabin (1) in real time, and a closed-loop control system (4) which is respectively connected with the monitoring system (3) and the dust generating system (2) and is used for dynamically adjusting the output of the dust generating system (2) according to the real-time concentration data fed back by the dust concentration sensor (31) so as to maintain the concentration of the sand and dust in the test cabin (1) within a preset target concentration range.
  2. 2. Multi-station wind and sand test system for active induced draft products according to claim 1, characterized in that said dust generating system (2) adopts a modular architecture comprising: The storage bin (21) is used for storing sand and dust raw materials with different particle sizes in a grading manner; The mixing stirrer (22) is connected with the storage bin (21) and is used for uniformly mixing sand and dust with different particle sizes; The device comprises a mixing stirrer (22), a flow distribution pipeline (23) connected with the mixing stirrer (22) and used for uniformly distributing uniformly mixed sand and dust to a plurality of output branches, and a plurality of groups of spray nozzles (24) respectively connected with the plurality of output branches of the flow distribution pipeline (23) and used for spraying the sand and dust into the test cabin (1), wherein the spray angles of the spray nozzles are adjustable.
  3. 3. The multi-working condition sand blast test system for the active induced draft product according to claim 1 or 2, wherein the monitoring system (3) further comprises a wind speed sensor (32) and a temperature sensor (33), and the closed-loop control system (4) is further used for synchronously adjusting the injection pressure of the dust generating system (2) and the auxiliary temperature control equipment (7) in the test cabin (1) according to the feedback of the wind speed sensor (32) and the temperature sensor (33) so as to realize multi-parameter cooperative closed-loop control of sand concentration, wind speed and temperature.
  4. 4. Multi-station wind sand testing system for active air suction type products according to claim 1, characterized in that it further comprises a dust collection system (5), said dust collection system (5) comprising: a dust collection groove (51) arranged at the bottom of the test cabin (1); A dust collection tank (52) and a negative pressure dust collection pipeline (53) which connects the dust collection tank (51) and the dust collection tank (52) and is used for sucking the sand in the test cabin (1) into the dust collection tank (52).
  5. 5. A multi-condition sand blast test method for active induced draft-like products according to any of claims 1 to 4, comprising the steps of: Step S1, an active induced draft electromechanical product to be tested is arranged in a test cabin (1), and the induced draft surface of the electromechanical product faces the spraying direction of a dust generating system (2); S2, starting the dust generating system (2), and spraying sand and dust to the suction surface of the electromechanical product; Step S3, starting the electromechanical product to be in an active induced draft running state; Step S4, in the running process of the electromechanical product, dynamically adjusting the output of the dust generating system (2) according to the feedback of the sand and dust concentration monitored in real time through the closed-loop control system (4) to enable the sand and dust concentration in the test cabin (1) to be stabilized at a preset target value so as to simulate the coupling working condition of actively sucking the product into the dust-containing airflow; and S5, monitoring the running state parameters of the electromechanical product in the test process, and evaluating the sand-wind resistance of the electromechanical product according to the running state parameters.
  6. 6. The multi-condition sand blast test method according to claim 5, wherein the step S1 is further characterized by comprising presetting test condition parameters according to a sand blast sample analysis result of a target application region, wherein the condition parameters at least comprise target sand particle size distribution, target concentration and target wind speed.
  7. 7. The multi-condition sand blast test method according to claim 5, wherein the step S1 further comprises the step of performing an initial performance test on the electromechanical product (6) to be tested after the electromechanical product is installed, and recording initial performance data before the electromechanical product is not affected by sand dust.
  8. 8. The multi-condition sand blast test method according to claim 5, wherein the operation state parameters monitored in step S5 include at least one of induced draft resistance, operating current, input power, and air volume change, and a screen sand accumulation pattern recorded through an observation window.
  9. 9. The multi-condition sand blast test method according to claim 7, wherein the step S5 further comprises a step S6 of stopping the dust generating system (2), continuing to operate the electromechanical product and/or the sand collecting system (5) to clean sand in the cabin, retesting the tested performance of the electromechanical product, and comparing the retested result with the initial performance data and the dynamic parameters in the test process.
  10. 10. The multi-condition sand blast test method according to claim 5, wherein in step S4, the dynamic adjustment of the closed loop control system (4) is further based on the real-time monitored wind speed and temperature feedback, and the injection pressure of the dust generating system (2) and the auxiliary temperature control device (7) in the test cabin (1) are synchronously adjusted, so as to realize multi-parameter cooperative control of the dust concentration, wind speed and temperature.

Description

Multi-working-condition sand blast test system and method for active induced draft products Technical Field The invention relates to the technical field of environment simulation tests, in particular to a multi-working-condition sand blasting test system for active induced draft products and a test method using the system. Background With the development of industrial technology, various active induced draft electromechanical products (such as air conditioner external units, vehicle radiators, outdoor communication cabinet fans, air purifiers and the like) which need to work in outdoor or dusty environments are increasingly popularized. The products can actively suck ambient air in the running process, if sand and dust are contained in the air, the sand and dust can be sucked into the products, so that a filter screen is blocked, the heat dissipation efficiency is reduced, moving parts are worn or even a circuit is failed, and the performance, the reliability and the service life of the products are seriously affected. In order to evaluate and verify the suitability of such products in a sandstorm environment, there are currently some sandstorm test devices and methods. However, most of the existing sand-blast test systems aim at static products or environments simulating natural sedimentation of sand and dust only, and fail to truly restore the dynamic coupling process of actively sucking dust-containing airflow of active air suction products. In addition, the existing system can only control single sand and dust concentration, is difficult to simulate the actual environment of multi-station coupling such as wind speed, temperature and the like, has poor control precision and response speed of the sand and dust concentration, and cannot meet the requirements of fine and standardized testing. Therefore, a test system and a method capable of more truly and accurately simulating the actual working environment of active induced draft products are needed. Disclosure of Invention The invention aims to solve at least one problem in the prior art, and provides a multi-working-condition sand blasting test system and method capable of truly simulating working conditions of active air suction products and realizing multi-parameter accurate cooperative control. In order to achieve the above object, a first aspect of the present invention provides a multi-working condition sand wind test system for active induced draft products, comprising: the test cabin is used for accommodating active induced draft electromechanical products to be tested; A dust generating system, the spraying direction of which is configured to face the air suction surface of the electromechanical product, and is used for spraying sand into the test cabin so as to simulate the dust-containing airflow environment; the monitoring system at least comprises a dust concentration sensor for monitoring the concentration of the sand and dust in the test cabin in real time, and a closed-loop control system which is respectively connected with the monitoring system and the dust generating system and is used for dynamically adjusting the output of the dust generating system according to the real-time concentration data fed back by the dust concentration sensor so as to maintain the concentration of the sand and dust in the test cabin within a preset target concentration range. Further, the dust generating system adopts a modularized architecture, comprising: the storage bin is used for storing sand and dust raw materials with different particle sizes in a grading manner; the mixing stirrer is connected with the storage bin and is used for uniformly mixing sand and dust with different particle sizes; the device comprises a mixing stirrer, a diversion pipeline, a plurality of groups of spray nozzles and a plurality of groups of spray nozzles, wherein the mixing stirrer is used for uniformly mixing sand and dust, the diversion pipeline is connected with the mixing stirrer and used for uniformly diverting the uniformly mixed sand and dust to a plurality of output branches, the groups of spray nozzles are respectively connected with the plurality of output branches of the diversion pipeline and used for spraying the sand and dust into the test cabin, and the spray angles of the spray nozzles are adjustable. The monitoring system is further used for synchronously adjusting the injection pressure of the dust generating system and auxiliary temperature control equipment in the test cabin according to feedback of the wind speed sensor and the temperature sensor so as to realize multi-parameter collaborative closed-loop control of sand and dust concentration, wind speed and temperature. Further, the system also includes a dust collection system, the dust collection system including: The dust collection groove is arranged at the bottom of the test cabin; and the negative pressure dust collection pipeline is connected with the dust collection groove and the dust collecti