CN103883549A - Device and method for testing back pressures of fans of tunnels of subways - Google Patents
Device and method for testing back pressures of fans of tunnels of subways Download PDFInfo
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- CN103883549A CN103883549A CN201410059307.9A CN201410059307A CN103883549A CN 103883549 A CN103883549 A CN 103883549A CN 201410059307 A CN201410059307 A CN 201410059307A CN 103883549 A CN103883549 A CN 103883549A
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- back pressure
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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
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Abstract
The invention discloses a device for testing back pressures of fans of tunnels of subways. The device comprises a main testing air channel, a tested fan and an auxiliary air channel. The tested fan is connected onto the main testing air channel, a testing sensor is arranged in the tested fan, an auxiliary fan is connected onto the auxiliary air channel, the main testing air channel is communicated with the auxiliary air channel via a first transverse air pipe and a second transverse air pipe respectively, and the auxiliary fan is arranged between the first transverse air pipe and the second transverse air pipe; a second air valve is arranged in the first transverse air pipe, and a third air valve is arranged in the second transverse air pipe; a first air valve and a fourth air valve are respectively arranged at two ends of the auxiliary air channel and are respectively arranged on the outer side of the first transverse air pipe and the outer side of the second transverse air pipe. The device has the advantages that positive and negative back pressures on the tested fan can be generated under the long-term forward rotation actions of the auxiliary fan and the opening and closing effects of the air valves and can be switched over within 6-7 seconds under the control owing to the fact that opening and closing time of the air valves can be controlled and is within the range of 6-7 seconds, accordingly, the tested fan is in a state close to an actual running state, and a test result is true and reliable.
Description
Technical field
What the present invention relates to is a kind of subway tunnel blower fan back pressure test device and test method thereof, is applicable to the back pressure test of underground fan, belongs to blower fan and ventilating engineering technical field.
Background technique
According to the development form of current domestic track traffic, the subway of each big and medium-sized cities is more and more, and different kinds of railways, vcehicular tunnel are more and more longer, increasing subway tunnel blower fan in the ventilation system of subway, railway, vcehicular tunnel in occupation of consequence.In the time that vehicle rolls tunnel away from and enters station and roll station away from and enter tunnel, in tunnel, all can produce powerful Piston Action Wind.For tunnel blower, Piston Action Wind is the pressure with-300Pa～-700Pa by tunnel blower is produced+200～+ 500Pa.Because tunnel blower is in the whole process of tunnel operation, continuously normal operation.Therefore detect tunnel blower and can meet in 6～7 seconds the normally operation the back pressure from+200～+ 500Pa to-300Pa～-700Pa according to subway tunnel blower technical requirements regulation, become the important indicator that detects tunnel blower.
Existing fan test method is according to GB GB1236-2000 " test in industrial ventilation machine standardization air channel ".In GB, can increase accessory fan for the testing apparatus of this class axial-flow blower and carry out the pressure variation in replenishment system, supplementary but accessory fan only can complete the pressure of single direction in system.Moreover no matter accessory fan adopts startup, stops or clockwise and anticlockwise switching, all can not complete the pressure variable effect process to system in 6～7 seconds.
Summary of the invention
For overcoming above-mentioned defect, the present invention aim to provide one can simulation tunnel fan operation process in, be subject to the truth of tunnel Piston Action Wind impact, meet in 6～7 seconds testing apparatus and the test method of the economy from+200～+ 500Pa to-300Pa～-700Pa, carry out the back pressure test of tunnel blower.
For achieving the above object, the technical solution used in the present invention is: a kind of subway tunnel blower fan back pressure test device, comprise a master trip air channel, described master trip is connected with tested blower fan on air channel, described master trip is provided with test inductor in air channel, subway tunnel blower fan back pressure test device of the present invention also comprises an auxiliary air channel, on described auxiliary air channel, be connected with an accessory fan, described master trip air channel is connected by beam wind pipe one and beam wind pipe two respectively with auxiliary air channel, and described accessory fan is placed between beam wind pipe one and beam wind pipe two; In described beam wind pipe one, be provided with an air-valve two, in described beam wind pipe two, be provided with an air-valve three; Two ends in described auxiliary air channel are respectively equipped with air-valve one and air-valve four, and described air-valve one and air-valve four are placed in respectively the outside of beam wind pipe one and beam wind pipe two.
Described master trip is also provided with slip ring, throttling arrangement and honeycomb on air channel.
Subway tunnel blower fan back pressure test device of the present invention also comprises a control centre, and described control centre is connected with tested blower fan, accessory fan, air-valve one, air-valve two, air-valve three and air-valve four signals respectively.
Subway tunnel blower fan back pressure test device of the present invention, its test method is:
Malleation back pressure test: close air-valve one, air-valve two, air-valve three and air-valve four, open tested blower fan, after tested blower fan normal operation, open successively air-valve one and air-valve three, and open accessory fan, the airflow direction of accessory fan is consistent with the airflow direction of tested blower fan, the data of read test inductor;
Negative pressure back pressure test: in 6-7 seconds, open successively air-valve four, close air-valve three, open air-valve two, close air-valve one, the data of read test inductor.
Before positive and negative back pressure test, the spacing debugging of advanced sector-style valve one, air-valve two, air-valve three and air-valve four, is specially:
Close air-valve one, air-valve two, air-valve three and air-valve four, open tested blower fan, after waiting tested blower fan to run well, the data of read test inductor record form record data one; Open successively air-valve one and air-valve three, and open accessory fan, the airflow direction of accessory fan is consistent with the airflow direction of tested blower fan, and the data of read test inductor record form record data two; Record data one, two are contrasted, draw positive back pressure value, according to the enable possition of positive back pressure value adjusting air valve one and air-valve three, until positive back pressure value while arriving test standard value, is carried out spacing to air-valve one and air-valve three;
Open air-valve four, close air-valve three, open air-valve two, close air-valve one, the data of read test inductor also form record data three, record data one, three are contrasted, draw negative back pressure value, according to the enable possition of negative back pressure value adjusting air valve four and air-valve two, until negative back pressure value while arriving test standard value, is carried out spacing to air-valve four and air-valve two.
Subway tunnel blower fan back pressure test device of the present invention and test method thereof are adopted, utilize the long-term forward of accessory fan and the keying of air-valve to realize the positive and negative back pressure of tested blower fan, because the opening and closing time of air-valve can be controlled in 6-7 second, tested blower fan also can be controlled at from positive back pressure to the transformation period of negative back pressure in 6-7 second, closer to actual motion state, make the result of test more true and reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1-master trip air channel, the tested blower fan of 2-, 3-assists air channel, 4-accessory fan, 5-beam wind pipe one, 6-beam wind pipe two, 7-air-valve two, 8-air-valve three, 9-air-valve one, 10-air-valve four, 11-tests inductor, 12-slip ring, 13-throttling arrangement, 14-honeycomb.
Embodiment
As shown in Figure 1, the invention discloses a kind of subway tunnel blower fan back pressure test device, comprise a master trip air channel 1, on described master trip air channel 1, be connected with tested blower fan 2, in described master trip air channel 1, be provided with test inductor 11, the performance index such as static pressure, wind speed can record in real time tested blower fan 2 and move by test inductor 11 time.The standard air chute matching with tested blower fan 2 models need be selected in master trip air channel 1.
The innovative point of subway tunnel blower fan back pressure test device of the present invention is mainly that it also comprises an auxiliary air channel 3, on described auxiliary air channel 3, be connected with an accessory fan 4, described master trip air channel 1 is connected by beam wind pipe 1 and beam wind pipe 26 respectively with auxiliary air channel 3, and described accessory fan 4 is placed between beam wind pipe 1 and beam wind pipe 26; In described beam wind pipe 1, be provided with an air-valve 27, in described beam wind pipe 26, be provided with an air-valve 38; Two ends in described auxiliary air channel 3 are respectively equipped with air-valve 1 and air-valve 4 10, and described air-valve 1 and air-valve 4 10 are placed in respectively the outside of beam wind pipe 1 and beam wind pipe 26.
When concrete test, be divided into positive back pressure test and negative back pressure test.
Malleation back pressure test: close air-valve 1, air-valve 27, air-valve 38 and air-valve 4 10, open tested blower fan 2, after waiting tested blower fan 2 to run well, open successively air-valve 1 and air-valve 38, and open accessory fan 4, the airflow direction of accessory fan 4 is consistent with the airflow direction of tested blower fan 2; Now, air-flow enters auxiliary air channel 3 from air-valve 1, and flow to master trip air channel 1 from beam wind pipe 26 after accessory fan 4 pressurizations, be incorporated in the middle of the air-flow in master trip air channel 1, air-flow to master trip air channel 1 pressurizes, tested blower fan 2 is added to a positive back pressure, the then data of read test inductor 11, are the performance parameter of tested blower fan 2 in the time being subject to positive back pressure;
Negative pressure back pressure test: in 6-7 seconds, open successively air-valve 4 10, close air-valve 38, open air-valve 27, close air-valve 1; Now, accessory fan 4 oppositely extracts the air-flow in master trip air channel 1, flows into auxiliary air channel 3 through beam wind pipe 1 by air-valve 27, and flows out from air-valve 4 10 after accessory fan 4 pressurizations; Because accessory fan 4 oppositely extracts the air-flow in master trip air channel 1, air-flow in master trip air channel 1 is reduced pressure, even if tested blower fan 2 adds a negative back pressure, the then data of read test inductor 11, are the performance parameter of tested blower fan 2 in the time being subject to negative back pressure.
Conventionally carrying out before positive and negative back pressure test, first to carry out the spacing debugging of air-valve 1, air-valve 27, air-valve 38 and air-valve 4 10, be specially:
The positive spacing debugging of back pressure test: close air-valve 1, air-valve 27, air-valve 38 and air-valve 4 10, open tested blower fan 2, after waiting tested blower fan 2 to run well, the data of read test inductor 11 record form record data one; Open successively air-valve 1 and air-valve 38, and open accessory fan 4, the airflow direction of accessory fan 4 is consistent with the airflow direction of tested blower fan 2, and the data of read test inductor 11 record form record data two; Record data one, two are contrasted, draw positive back pressure value, according to the enable possition of positive back pressure value adjusting air valve 1 and air-valve 38, until positive back pressure value while arriving test standard value, is carried out spacing to air-valve 1 and air-valve 38; Air-valve 1 and air-valve 38 are carrying out after spacing debugging, and while the tested blower fan 2 of a same model being carried out to positive back pressure test, air-valve 1 and air-valve 38 are in the time being opened to spacing position later at every turn, and positive back pressure value arrives test standard value.In the time that the model of tested blower fan 2 or accessory fan 4 changes, need re-start the spacing debugging of positive back pressure test.
The negative spacing debugging of back pressure test: open air-valve 4 10, close air-valve 38, open air-valve 27, close air-valve 1, the data of read test inductor 11 also form record data three, record data one, three are contrasted, draw negative back pressure value, according to the enable possition of negative back pressure value adjusting air valve 4 10 and air-valve 27, until negative back pressure value while arriving test standard value, is carried out spacing to air-valve 4 10 and air-valve 27.Air-valve 4 10 and air-valve 27 are carrying out after spacing debugging, and when later each tested blower fan 2 negative back pressure test to a same model, air-valve 4 10 and air-valve 27 are in the time being opened to spacing position, and negative back pressure value arrives test standard value.In the time that the model of tested blower fan 2 or accessory fan 4 changes, need re-start the spacing debugging of negative back pressure test.
Another innovative point of subway tunnel blower fan back pressure test device of the present invention is to be also provided with on described master trip air channel 1 slip ring 12, throttling arrangement 13 and honeycomb 14.Conventionally slip ring 12, throttling arrangement 13 and honeycomb 14 are set gradually to beam wind pipe 1 from the intake grill in master trip air channel 1, described slip ring 12 is arranged on the intake grill in master trip air channel 1, air-flow is carried out afflux and pressurizes flowing in master trip air channel 1, the resistance of described throttling arrangement 13 adjustable main test air ways 1, tested blower fan 2 is operated under the resistance state the same with actual conditions, described honeycomb 14 can carry out rectification to the air-flow in master trip air channel 1, makes air current flow more smooth and easy.
Subway tunnel blower fan back pressure test device of the present invention also can arrange a control centre, and described control centre is connected with tested blower fan 2, accessory fan 4, air-valve 1, air-valve 27, air-valve 38 and air-valve 4 10 signals respectively.By control centre, can automatically control the keying of tested blower fan 2, accessory fan 4, air-valve 1, air-valve 27, air-valve 38 and air-valve 4 10, to guarantee that switching in the reference time of positive and negative back pressure test completes.
Claims (5)
1. a subway tunnel blower fan back pressure test device, comprise a master trip air channel (1), on described master trip air channel (1), be connected with tested blower fan (2), in described master trip air channel (1), be provided with test inductor (11), it is characterized in that it also comprises an auxiliary air channel (3), on described auxiliary air channel (3), be connected with an accessory fan (4), described master trip air channel (1) is connected by beam wind pipe one (5) and beam wind pipe two (6) respectively with auxiliary air channel (3), described accessory fan (4) is placed between beam wind pipe one (5) and beam wind pipe two (6), in described beam wind pipe one (5), be provided with an air-valve two (7), in described beam wind pipe two (6), be provided with an air-valve three (8), two ends in described auxiliary air channel (3) are respectively equipped with air-valve one (9) and air-valve four (10), and described air-valve one (9) and air-valve four (10) are placed in respectively the outside of beam wind pipe one (5) and beam wind pipe two (6).
2. subway tunnel blower fan back pressure test device according to claim 1, is characterized in that being also provided with on described master trip air channel (1) slip ring (12), throttling arrangement (13) and honeycomb (14).
3. subway tunnel blower fan back pressure test device according to claim 1, it is characterized in that it also comprises a control centre, described control centre is connected with tested blower fan (2), accessory fan (4), air-valve one (9), air-valve two (7), air-valve three (8) and air-valve four (10) signals respectively.
4. subway tunnel blower fan back pressure test device according to claim 1, its test method is:
Malleation back pressure test: close air-valve one (9), air-valve two (7), air-valve three (8) and air-valve four (10), open tested blower fan (2), after tested blower fan (2) normal operation, open successively air-valve one (9) and air-valve three (8), and open accessory fan (4), the airflow direction of accessory fan (4) is consistent with the airflow direction of tested blower fan (2), the data of read test inductor (11);
Negative pressure back pressure test: in 6-7 seconds, open successively air-valve four (10), close air-valve three (8), open air-valve two (7), close air-valve one (9), the data of read test inductor (11).
5. the test method of subway tunnel blower fan back pressure test device according to claim 4, it is characterized in that before positive and negative back pressure test, the spacing debugging of advanced sector-style valve one (9), air-valve two (7), air-valve three (8) and air-valve four (10), is specially:
Close air-valve one (9), air-valve two (7), air-valve three (8) and air-valve four (10), open tested blower fan (2), after waiting tested blower fan (2) to run well, the data of read test inductor (11) record form record data one; Open successively air-valve one (9) and air-valve three (8), and open accessory fan (4), the airflow direction of accessory fan (4) is consistent with the airflow direction of tested blower fan (2), and the data of read test inductor (11) record form record data two; Record data one, two are contrasted, draw positive back pressure value, according to the enable possition of positive back pressure value adjusting air valve one (9) and air-valve three (8), until positive back pressure value while arriving test standard value, is carried out spacing to air-valve one (9) and air-valve three (8);
Open air-valve four (10), close air-valve three (8), open air-valve two (7), close air-valve one (9), the data of read test inductor (11) also form record data three, record data one, three are contrasted, draw negative back pressure value, according to the enable possition of negative back pressure value adjusting air valve four (10) and air-valve two (7), until when negative back pressure value arrival test standard value, carry out spacing to air-valve four (10) and air-valve two (7).
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| CN201410059307.9A CN103883549B (en) | 2014-02-21 | 2014-02-21 | Device and method for testing back pressures of fans of tunnels of subways |
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| CN201410059307.9A CN103883549B (en) | 2014-02-21 | 2014-02-21 | Device and method for testing back pressures of fans of tunnels of subways |
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| CN103883549B CN103883549B (en) | 2017-04-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962314A (en) * | 2022-06-15 | 2022-08-30 | 皇家动力(武汉)有限公司 | Pneumatic performance test device of high-speed axial flow fan |
| EP4177474A1 (en) * | 2021-11-03 | 2023-05-10 | Talleres Zitrón, S.A. | Test station for a fan and method for testing a fan using said test station |
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| JPH04125443A (en) * | 1990-09-17 | 1992-04-24 | Mitsubishi Heavy Ind Ltd | Apparatus for testing performance of air blower |
| CN101109672A (en) * | 2006-07-19 | 2008-01-23 | 上海理工大学 | Air compartment type draught fan performance test device for both air inflowing and exhausting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4177474A1 (en) * | 2021-11-03 | 2023-05-10 | Talleres Zitrón, S.A. | Test station for a fan and method for testing a fan using said test station |
| CN114962314A (en) * | 2022-06-15 | 2022-08-30 | 皇家动力(武汉)有限公司 | Pneumatic performance test device of high-speed axial flow fan |
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| CN103883549B (en) | 2017-04-19 |
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Address after: 312300 Shangyu City, Shaoxing province people's Road West, No. Applicant after: ZHEJIANG SHANGFENG GAOKE SPECIAL FAN INDUSTRY CO., LTD. Address before: 312300 Shangyu City, Shaoxing province people's Road West, No. 1818, No. Applicant before: Shangyu Special Fans Co., Ltd. |
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Inventor after: Zhang Lei Inventor after: Xu Jianfeng Inventor after: Hu Weifeng Inventor after: Ren Jintu Inventor after: Shen Wei Inventor before: Zhang Lei Inventor before: Xu Jianfeng Inventor before: Hu Weifeng Inventor before: Ren Jintu |
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Address after: 312300 No. 1818, Renmin West Road, Dongguan Street, Shangyu District, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Shangfeng high tech special wind industry Co.,Ltd. Address before: 312300 No. 1818 Renmin West Road, Shangyu District, Zhejiang, Shaoxing Patentee before: ZHEJIANG SHANGFENG HI-TECH SPECIALIZED WIND INDUSTRIAL Co.,Ltd. |
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