CN116221165B - Test device for strong-corrosion airflow erosion test of centrifugal blower - Google Patents
Test device for strong-corrosion airflow erosion test of centrifugal blower Download PDFInfo
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- CN116221165B CN116221165B CN202310238104.5A CN202310238104A CN116221165B CN 116221165 B CN116221165 B CN 116221165B CN 202310238104 A CN202310238104 A CN 202310238104A CN 116221165 B CN116221165 B CN 116221165B
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- 238000012360 testing method Methods 0.000 title claims abstract description 79
- 238000005260 corrosion Methods 0.000 title claims abstract description 25
- 230000003628 erosive effect Effects 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 239000002253 acid Substances 0.000 claims abstract description 35
- 239000003595 mist Substances 0.000 claims abstract description 27
- 230000007797 corrosion Effects 0.000 claims abstract description 18
- 238000005554 pickling Methods 0.000 claims abstract description 16
- 230000009467 reduction Effects 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims description 16
- 238000005406 washing Methods 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 14
- 239000000523 sample Substances 0.000 claims description 8
- 238000004458 analytical method Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 239000003513 alkali Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a test device for a strong corrosion airflow erosion test of a centrifugal blower, which comprises a first sleeve, a liquid seal storage box and an air pressure test device, wherein the first sleeve is sleeved on a current collector of the centrifugal blower, a conical discharge spout is arranged at the bottom of the liquid seal storage box, and liquid cannot drop when the air pressure in the liquid seal storage box is the same as the external atmospheric pressure; the top of the liquid seal storage box is connected with a gas flow controller, the gas flow controller is connected with an air compressor, the air compressor is connected with an air nozzle, and the gas pressure of the liquid seal storage box is controlled by the gas flow controller, so that liquid drops; the air nozzle blows off the pickling solution dropped by the conical leakage nozzle to form acid mist; the wind pressure testing device is used for testing the wind pressure value at the outlet of the volute of the centrifugal blower; and evaluating the damage degree of the impeller tip through the reduction of the wind pressure value, thereby determining the service life of the impeller.
Description
Technical Field
The invention belongs to the field of corrosion resistance testing of centrifugal blower blade coatings, and particularly relates to a testing device for a strong corrosion airflow erosion test of a centrifugal blower.
Background
The service environment atmosphere of the centrifugal blower is complex, and the acid medium in the environment atmosphere damages the impeller seriously. The coating is attached to the surface of the blade, so that the damage rate of the impeller can be effectively reduced, and the service life of the centrifugal blower can be prolonged.
The test method of the coating performance of the impeller of the centrifugal blower is generally carried out by adopting a laboratory-grade salt mist/acid mist corrosion box, namely, suspending coated blades in a closed box, and then, continuously filling atomized acid mist to inspect the damage condition of the coating under the corrosion condition. However, in the actual service process of the centrifugal blower, the rotating speed of the impeller is extremely high and is generally more than 2500rpm, and the speed of the acid mist-containing air passing through the centrifugal blower is correspondingly extremely high, so that the corrosive medium acts on the impeller coating and is actually high-speed erosion rather than quasi-static erosion; the temperature rise caused by the friction action of the air flow and the blades is different because the angular velocity of the impeller is the same but the linear velocity of the impeller from the tip to the blade root is different, and the temperature has a larger influence on the corrosion resistance of the coating. Therefore, the temperature rise condition in the service process is simulated by uniformly heating the salt spray corrosion box, and the performance change of the impeller coating caused by the temperature rise under the actual working condition can not be reflected well in practice.
Based on this, the present patent is filed.
Disclosure of Invention
The invention aims to provide a test device for a strong corrosion airflow erosion test of a centrifugal blower, which provides an acid mist environment for the centrifugal blower, can reflect the damage condition of an impeller nearly and truly, and realizes quick screening of novel corrosion-resistant coatings.
The test device for the strong corrosion airflow erosion test of the centrifugal blower comprises a first sleeve, a liquid sealing storage box, a gas flow controller, an air compressor, a wind pressure test device and a test controller, wherein one end of the first sleeve is sleeved on a current collector of the centrifugal blower, and the other end of the first sleeve is provided with an upward opening; the pickling solution is stored in the liquid sealed storage box, the bottom of the liquid sealed storage box is provided with a conical discharge spout, the top of the liquid sealed storage box is provided with an air inlet, and the liquid can not drip when the air pressure in the liquid sealed storage box is the same as the external atmospheric pressure; the air inlet at the top of the liquid sealed storage box is connected with an air flow controller, the air flow controller is connected with an air compressor, the air compressor is also connected with an air nozzle, the conical discharge spout is positioned in the opening of the first sleeve, the air nozzle is also positioned in the opening of the first sleeve and below the conical discharge spout, the nozzle direction of the air nozzle is inclined downwards, and the discharge spout direction of the conical discharge spout is downwards; the gas flow rate controller controls the flow rate of the gas entering the storage box, so that the gas pressure of the liquid sealed storage box is changed, and the pickling solution is dripped; the gas sprayed by the air nozzle can blow off the pickling solution dropped by the conical leakage nozzle to form acid mist; acid mist reaches the blades of the centrifugal blower under the combined action of the first sleeve guide and the suction force generated when the centrifugal blower current collector works;
the wind pressure testing device is used for testing the wind pressure value at the outlet of the volute of the centrifugal blower, and comprises a wind pressure tester and a wind pressure probe connected with the wind pressure tester, wherein the wind pressure probe is arranged at the outlet of the volute of the centrifugal blower; the damage degree of the impeller tip is evaluated through the reduction of the wind pressure value at the outlet of the volute of the centrifugal blower, so that the service life of the impeller is determined.
Further, the device further comprises a test controller, wherein the wind pressure tester, the air compressor and the gas flow controller are all connected with the test controller, and the test controller is used for acquiring wind pressure data collected by the wind pressure tester, analyzing the wind pressure data and driving the air compressor and the gas flow controller to stop according to analysis results.
Further, the analysis of the wind pressure data specifically means: firstly, collecting an operation wind pressure value of a centrifugal blower without pickling solution, and setting the value as an initial wind pressure value; and then acquiring a wind pressure value in the acid mist environment, and when the tested wind pressure value is 70-90% of the initial wind pressure value, proving that the blade coating is corroded.
Further, the initial wind pressure value is obtained by obtaining wind pressure data for 5 minutes continuously and obtaining an average value.
Further, when the wind pressure value acquired by the wind volume tester in the continuous 5min time is less than 70-90% of the initial wind pressure value, the test is judged to be completed.
Further, the test controller has alarm and display functions.
Further, a second sleeve is arranged on the outlet of the volute of the centrifugal blower, and the other end of the second sleeve is provided with an alkaline washing tank, so that acid mist is neutralized by alkaline washing liquid in the alkaline washing tank.
Further, the first sleeve, the second sleeve and the liquid-sealed storage box are all made of plastics.
The test principle of the invention: the most critical index for evaluating the life of the blower impeller is the wind pressure at the outlet of the volute, and the most important structural feature for maintaining the wind pressure is the minimum clearance value between the tip of the impeller and the inner wall of the volute. In the service process of the centrifugal blower, under the action of strong corrosion airflow erosion, the impeller tip is damaged firstly due to the maximum linear speed of the impeller tip, and the coating is continuously peeled off after the tip is damaged and corroded, so that the clearance value between the coating and the inner wall of the volute is continuously increased, and finally the wind pressure of the centrifugal blower does not meet the requirement. Therefore, the method and the device evaluate the damage degree of the tip of the impeller by judging the air pressure value of the air outlet as the index of the service life of the impeller and by reducing the air pressure value, thereby determining the service life of the impeller.
Compared with the prior art, the invention has the following beneficial effects:
(1) The acid mist is input into the current collector of the centrifugal blower in real time, so that the corrosion condition of the integral impeller of the centrifugal blower in the normal service process is tested, and the accelerated corrosion test can be realized by improving the content proportion of the acid mist, thereby realizing the evaluation of the service life of the blower in a short time;
(2) The actual flow rate of the acid liquor is controlled by the speed of injecting the compressed gas into the closed acid liquor pool, so that the content of the acid mist can be accurately regulated and controlled, and the environmental atmosphere under different working conditions can be simulated;
(3) The acid mist for experiments is completely discharged into the alkali liquid pool for neutralization by externally connecting the alkali liquid pool at the outlet of the volute of the centrifugal blower, and the alkali liquid amount required for neutralizing the acid liquid in all the acid liquid pools is calculated in advance, so that the acid-base is ensured to be completely neutralized after the experiments, and the environmental pollution caused by the experiments is greatly reduced;
(4) The test controller is used for reading the data of the wind pressure and wind quantity tester, further judging whether the wind pressure is lower than a threshold value or not, automatically judging whether the whole system needs to be shut down or not, realizing that personnel do not need to wait in real time in the test process, greatly reducing the test cost and improving the efficiency.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
The marks in the figure: 100. a centrifugal blower; 101. a current collector; 102. a blade; 104. a volute; 200. a first sleeve; 300. a liquid-tight storage tank; 310. a conical discharge spout; 400. an air compressor; 410. an air nozzle; 500. a gas flow controller; 600. a wind pressure tester; 601. a wind pressure probe; 700. a test controller; 800. a second sleeve; 900. and (5) an alkaline washing pool.
Detailed Description
As shown in fig. 1, the test device for the strong corrosion airflow erosion test of the centrifugal blower 100 provided in this embodiment includes a first sleeve 200, a liquid sealed storage tank 300, an air compressor 400, a gas flow controller 500, a wind pressure test device, a test controller 700, a second sleeve 800 and an alkaline washing tank 900, wherein one end of the first sleeve 200 is sleeved on a current collector 101 of the centrifugal blower 100, and the other end is opened upwards; the pickling solution is stored in the liquid-sealed storage box 300, the conical discharge spout 310 is arranged at the bottom of the liquid-sealed storage box 300, the air inlet is arranged at the top of the liquid-sealed storage box, the opening of the conical discharge spout 310 is extremely small, and when the air pressure in the storage box is the same as the external atmospheric pressure, the pickling solution in the liquid-sealed storage box 300 cannot drop under the tension of liquid; the air inlet at the top of the liquid-sealed storage box 300 is connected with the outlet of the air flow controller 500 through an air inlet pipe, the inlet of the air flow controller 500 is connected with the air compressor 400, the air compressor 400 is used for compressing outside air into the air flow controller 500, the air flow rate of the air entering the storage box can be controlled by the control of the air flow controller 500, the air quantity entering the liquid-sealed storage box 300 can be controlled according to the air flow rate and time, and then the air pressure of the liquid-sealed storage box 300 is changed, so that the air pressure in the liquid-sealed storage box 300 is larger than the outside air pressure through the air, and then the liquid tension at the outlet of the conical funnel is destroyed, so that the liquid drops; the speed of liquid dripping can be controlled by controlling the gas flow rate, so that the pickling liquid quantity can be controlled.
The air compressor 400 is further connected with an air nozzle 410, the conical discharge spout 310 is located in the opening of the first sleeve 200, the air nozzle 410 is also located in the opening of the first sleeve 200, the air nozzle 410 is located below the conical discharge spout 310, the nozzle direction of the air nozzle 410 is inclined downward, the discharge spout direction of the conical discharge spout 310 is downward, and the acid mist can be formed by blowing off the acid washing liquid dropped by the conical discharge spout 310 by the air sprayed by the air nozzle 410; the acid mist is guided by the first sleeve 200 and reaches the blades 102 of the centrifugal blower 100 under the suction force generated when the collector 101 of the centrifugal blower 100 works, the acid mist environment is provided for the rotating blades 102, and the corrosion resistance of the coating of the blades 102 under the rotating condition of the blades 102 can be tested.
Because the pickling solution is acidic and has corrosion to metals, the first sleeve 200, the second sleeve 800 and the liquid-tight storage tank 300 are all made of plastic.
The wind pressure testing device is used for testing the wind pressure value at the outlet of the volute 104 of the centrifugal blower 100, and comprises a wind pressure tester 600 and a wind pressure probe 601 connected with the wind pressure tester 600, wherein the wind pressure probe 601 is installed at the outlet of the volute 104 of the centrifugal blower 100.
The wind pressure tester 600, the air compressor 400 and the gas flow controller 500 are all connected with the test controller 700, the test controller 700 is realized by adopting a PCB board and is used for acquiring wind pressure data acquired by the wind pressure tester 600, analyzing the wind pressure data, and driving the air compressor 400 and the gas flow controller to stop according to analysis results, and the test controller comprises a microcontroller, a data acquisition module, a clock module and a driving module, wherein the data acquisition module is connected with the wind pressure tester 600, the driving module is connected with the air compressor 400 and the gas flow controller 500, and the microcontroller adopts a micro-processing module mature in the prior art and has the functions of data processing analysis, instruction acquisition, instruction sending and the like, such as an STC89C51 module and the like; a data analysis logic program is written in the microcontroller and is used for analyzing wind pressure data, specifically, testing the wind pressure value of the operation of the centrifugal blower 100 before the pickling solution is not dripped, and setting the value as an initial wind pressure value; and then acquiring a wind pressure value in the acid mist environment, when the tested wind pressure value is 70-90% of the initial wind pressure value, proving that the coating of the blade 102 is corroded, generating an instruction for stopping the operation of the air compressor 400 and the gas flow controller 500 by the microcontroller, and sending the instruction to a corresponding device through the driving module. Meanwhile, the microcontroller acquires the test time information of the clock module, and the corrosion resistance of the coating of the blade 102 is judged through the test time. An alarm can also be arranged to remind testers that the test is completed. And a display screen can be further arranged to display the wind pressure value, time and the like acquired in the testing process, so that the test personnel can observe the wind pressure value and time conveniently.
The second sleeve 800 is installed on the outlet of the volute 104 of the centrifugal blower 100, acid mist is guided and discharged in the test process, and the other end of the second sleeve 800 is provided with an alkaline washing tank 900, and the acid mist is neutralized by alkaline washing liquid in the alkaline washing tank 900, so that the acid mist is prevented from being discharged into the atmosphere to pollute the environment. Wherein the total amount of alkaline anions in the alkaline liquid pool is greater than or equal to the total amount of acidic cations in the liquid-sealed storage tank 300 to ensure complete neutralization of acid and alkali.
When the air pressure testing device is used, pickling solution is proportioned according to the service environment of the centrifugal blower 100, the pickling solution is poured into the liquid-sealed storage box 300, the outlet of the air flow controller 500 is connected with the air inlet of the liquid-sealed storage box 300 through a pipeline, the inlet of the air flow controller 500 is connected with the air compressor 400, the outlet of the air compressor 400 is connected with the air nozzle 410, both the control nozzle and the conical discharge spout 310 are placed in the opening at one end of the first sleeve 200, the other end of the first sleeve 200 is sleeved on the current collector 101 of the centrifugal blower 100, the air pressure probe 601 of the air pressure testing device is installed at the outlet of the volute 104 of the centrifugal blower 100 and is connected with the air pressure tester 600, the outlet of the volute 104 of the centrifugal blower 100 is sleeved with the second sleeve 800, the other end of the second sleeve 800 is placed in the alkaline washing tank 900, the air pressure tester 600, the air compressor 400 and the air flow controller 500 are connected with the test controller 700, the centrifugal blower 100 is started, initial air pressure values are obtained, continuous air pressure data of 5min are obtained for ensuring the accuracy of test results, and average values are obtained as initial air pressure values; then the air compressor 400 and the gas flow controller 500 are started to provide an acid mist environment for the blades 102 in the working state, the clock module starts timing and continues testing until the measured value of the partial pressure acquired by the air quantity tester is smaller than 70-90% of the initial air pressure value in the continuous 5min time, the timing is stopped, the air compressor 400 and the gas flow controller 500 stop working, the test is ended, and the centrifugal blower 100 continues to work for a certain time after the test is ended so as to ensure that the acid mist is neutralized by the alkaline washing tank 900.
The same coating centrifugal blower 100 was tested by using the device provided in this example, 200mL of 12% sodium hydroxide solution was filled in the alkaline washing tank 900, the initial wind pressure values of the centrifugal blower 100 were all 800pa, the gas flow rate of the gas flow controller 500 was set to 800mL/h, and the test results are shown in table 1.
Table 1 test results
| Sequence number | Acid liquor proportion | Total amount of acid solution | Testing total duration |
| 1 | 10％HNO 3 +4％HCl | 200L | 148.6h |
| 2 | 8％HNO 3 +6％HCl | 200L | 157.1h |
| 3 | 6％HNO 3 +8％HCl | 200L | 170.5h |
| 4 | 4％HNO 3 +10％HCl | 200L | 201.9h |
The foregoing is merely a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification and substitution based on the technical scheme and the inventive concept provided by the present invention should be covered in the scope of the present invention.
Claims (7)
1. The utility model provides a centrifugal blower strong corrosion air current test device for erosion test which characterized in that: the centrifugal blower comprises a first sleeve, a liquid sealing storage box, a gas flow controller, an air compressor, a wind pressure testing device and a test controller, wherein one end of the first sleeve is sleeved on a current collector of the centrifugal blower, and the other end of the first sleeve is provided with an upward opening; the pickling solution is stored in the liquid sealed storage box, the bottom of the liquid sealed storage box is provided with a conical discharge spout, the top of the liquid sealed storage box is provided with an air inlet, and the liquid can not drip when the air pressure in the liquid sealed storage box is the same as the external atmospheric pressure; the air inlet at the top of the liquid sealed storage box is connected with an air flow controller, the air flow controller is connected with an air compressor, the air compressor is also connected with an air nozzle, the conical discharge spout is positioned in the opening of the first sleeve, the air nozzle is also positioned in the opening of the first sleeve and below the conical discharge spout, the nozzle direction of the air nozzle is inclined downwards, and the discharge spout direction of the conical discharge spout is downwards; the gas flow controller controls the flow rate of the gas entering the storage box, so that the gas pressure of the liquid sealed storage box is changed, and the pickling solution is dripped; the gas sprayed by the air nozzle can blow off the pickling solution dropped by the conical leakage nozzle to form acid mist; acid mist reaches the blades of the centrifugal blower under the combined action of the first sleeve guide and the suction force generated when the centrifugal blower current collector works;
the wind pressure testing device is used for testing the wind pressure value at the outlet of the volute of the centrifugal blower, and comprises a wind pressure tester and a wind pressure probe connected with the wind pressure tester, wherein the wind pressure probe is arranged at the outlet of the volute of the centrifugal blower; evaluating the damage degree of the tip of the impeller through the reduction of the wind pressure value at the outlet of the volute of the centrifugal blower, thereby determining the service life of the impeller;
the air pressure tester, the air compressor and the gas flow controller are all connected with the test controller, and the test controller is used for acquiring air pressure data acquired by the air pressure tester, analyzing the air pressure data and driving the air compressor and the gas flow controller to stop according to analysis results.
2. The test device for the erosion test of the strong-corrosion airflow of the centrifugal blower according to claim 1, wherein: the analysis of wind pressure data specifically refers to: firstly, collecting an operation wind pressure value of a centrifugal blower without pickling solution, and setting the value as an initial wind pressure value; and then acquiring a wind pressure value in the acid mist environment, and when the tested wind pressure value is 70-90% of the initial wind pressure value, proving that the blade coating is corroded.
3. The test device for the erosion test of the strong-corrosion airflow of the centrifugal blower according to claim 2, wherein: the initial wind pressure value is obtained by obtaining wind pressure data for 5 continuous minutes and obtaining an average value.
4. The test device for the erosion test of the strong-corrosion airflow of the centrifugal blower according to claim 2, wherein: and judging that the test is finished when the wind pressure value acquired by the wind volume tester in the continuous 5min time is less than 70-90% of the initial wind pressure value.
5. The test device for the erosion test of the strong-corrosion airflow of the centrifugal blower according to claim 2, wherein: the test controller has alarm and display functions.
6. A test device for a strong corrosive air flow erosion test of a centrifugal blower according to any one of claims 1 to 5, wherein: a second sleeve is arranged on the outlet of the volute of the centrifugal blower, and the other end of the second sleeve is provided with an alkaline washing tank, and acid mist is neutralized by alkaline washing liquid in the alkaline washing tank.
7. The test device for the erosion test of the strong-corrosion airflow of the centrifugal blower according to claim 6, wherein: the first sleeve, the second sleeve and the liquid seal storage box are all made of plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310238104.5A CN116221165B (en) | 2023-03-13 | 2023-03-13 | Test device for strong-corrosion airflow erosion test of centrifugal blower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310238104.5A CN116221165B (en) | 2023-03-13 | 2023-03-13 | Test device for strong-corrosion airflow erosion test of centrifugal blower |
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| CN116221165B true CN116221165B (en) | 2024-03-15 |
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| JP2009128050A (en) * | 2007-11-20 | 2009-06-11 | Sumitomo Forestry Co Ltd | Corrosion accelerating simple spray testing machine |
| JP2010116873A (en) * | 2008-11-13 | 2010-05-27 | Mitsubishi Heavy Ind Ltd | Centrifugal compressor and operation method of centrifugal compressor |
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| CN211825607U (en) * | 2020-03-25 | 2020-10-30 | 杭州意能电力技术有限公司 | Low-temperature corrosion monitoring system for induced draft fan |
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