CN204493246U - A kind of lift fan system for air cushion ship model performance curve gauging means - Google Patents
A kind of lift fan system for air cushion ship model performance curve gauging means Download PDFInfo
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- CN204493246U CN204493246U CN201520073727.2U CN201520073727U CN204493246U CN 204493246 U CN204493246 U CN 204493246U CN 201520073727 U CN201520073727 U CN 201520073727U CN 204493246 U CN204493246 U CN 204493246U
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Abstract
The purpose of this utility model is to provide a kind of lift fan system for air cushion ship model performance curve gauging means, comprise test air duct, the external brandreth of fixing test air duct, fixing test air duct built-in brandreth is set in the external brandreth of fixing test air duct, test air duct is through the external brandreth of fixing test air duct, the two ends of test air duct arrange hover fan and throttling arrangement respectively, hover fan is connected and fixed by ring set with test air duct, test air duct internal diameter is consistent with hover fan internal diameter, test air duct evenly arranges test air duct relief opening by the end of hover fan side, end by throttling arrangement side on test air duct arranges the mounting hole being used for setting pressure testing instrument and flow tester, pressure tester and flow tester are arranged on test air duct by mounting hole, the probe of pressure tester and flow tester is positioned at test air duct inside.The utility model can realize the simulation to real ship hover fan system performance characteristics curve in air cushion vehicle model test.
Description
Technical field
The utility model relates to a kind of testing apparatus debugging blower fan system performance curve.
Background technique
The hover system of Hovercraft is the unique apparatus that Hovercraft maintains the state that hovers, and blower fan system is then the source of whole hover system power.The hover fan size used due to air cushion vehicle model is little, but performance requirement is high, and the market demand is little, thus special blower fan model is not had to meet the hover fan demand of air cushion vehicle model test, therefore, need to carry out characteristic curve of fan test according to test actual requirement to selected hover fan, debug out the blower fan system performance state meeting air cushion vehicle model test requirements document, this is vital for air cushion vehicle model test.Existing draught fan performance test method is all for industrial ventilation machine, testing apparatus complex structure, and can only the performance curve of testing experiment blower fan.Because air cushion vehicle model test has special requirement for hover fan system performance characteristics curve, not only need to test out hover fan System performance profiles used, also need to change hover fan performance curve, finally debug out the hover fan working state of system of satisfied test fan performance requirement.At present, also do not find that there is specially for lift fan system for air cushion ship model testing property and debugging apparatus.
Summary of the invention
The purpose of this utility model is a kind of lift fan system for air cushion ship model performance curve gauging means providing test many sizes hover fan System performance profiles.
The purpose of this utility model is achieved in that
A kind of lift fan system for air cushion ship model performance curve of the utility model gauging means, it is characterized in that: comprise test air duct, the external brandreth of fixing test air duct, fixing test air duct built-in brandreth is set in the external brandreth of fixing test air duct, test air duct is through the external brandreth of fixing test air duct, and be arranged in the built-in brandreth of fixing test air duct by fixing test air duct bolt, the two ends of test air duct arrange hover fan and throttling arrangement respectively, hover fan is connected and fixed by ring set with test air duct, test air duct internal diameter is consistent with hover fan internal diameter, test air duct evenly arranges test air duct relief opening by the end of hover fan side, end by throttling arrangement side on test air duct arranges the mounting hole being used for setting pressure testing instrument and flow tester, pressure tester and flow tester are arranged on test air duct by mounting hole, the probe of pressure tester and flow tester is positioned at test air duct inside.
The utility model can also comprise:
1, described throttling arrangement is the annulus that centre arranges through hole, and not etc., throttling arrangement is not changed according to the size of through hole in the end of test air duct to the hole size between throttling arrangement.
Advantage of the present utility model is: the utility model adopts simple and reliable steel framework structure and replaceable air duct mode, can not change on the integrally-built basis of testing apparatus, only need changing the air duct consistent with testing the blower sizes that hovers, normally can complete the test of required hover fan System performance profiles.Meanwhile, carry out perforate exhaust at the air duct stack shell near assembling place, control in test the quantity of exhaust port, thus the size of the adjustment exhaust gross area, just effectively can adjust the surge region of hover fan.The utility model effectively can test the hover fan System performance profiles of air cushion vehicle model different size, hover on the performance curve basis of blower fan system in test simultaneously, the change of test mode blower fan system performance characteristic thus adjustment hovers of testing apparatus can be adjusted, finally debug out the hover fan system mode meeting test requirements document, realize the simulation to real ship hover fan system performance characteristics curve in air cushion vehicle model test.This is a kind of gauging means of lift fan system for air cushion ship model performance easily and effectively.
Accompanying drawing explanation
Fig. 1 a is test Wind cylinder structure schematic diagram of the present utility model, Fig. 1 b is the throttling arrangement schematic diagram of the first clear size of opening, Fig. 1 c is the throttling arrangement schematic diagram of the second clear size of opening, Fig. 1 d is the throttling arrangement schematic diagram of the third clear size of opening, and Fig. 1 e is the throttling arrangement schematic diagram of the 4th kind of clear size of opening;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is front view of the present utility model;
Fig. 4 is that same leaving area is than fan performance characteristic curve comparison diagram during lower different revolution;
Fan performance characteristic curve comparison diagram when Fig. 5 is exhaust port area change under same rotating speed.
Embodiment
Below in conjunction with accompanying drawing citing, the utility model is described in more detail:
Composition graphs 1 ~ 5, the utility model can according to test blower sizes, timely adjustment test air duct size, and then test many sizes hover fan System performance profiles, simultaneously by the ventilation aperture area on adjustment testing apparatus, thus change the surge area (i.e. fan performance unstable region) of hover fan system, finally debug out the characteristic curve of fan of Pass Test requirement, thus determine the hover fan working state of system of Pass Test requirement.
Square body steel frame 19, former and later two inside, frame face are provided with air duct and fix steelframe 15, extend four steel pin bottom steelframe 15, test air duct 7 passes from steelframe 19 front-back, fixed by fixing test air duct bolt 14, air duct 7 one end is hover fan installation place 1, the air duct 7 inner transverse direction of arrow is tested for airflow direction 8 in test air duct in Fig. 1 a, the other end is throttling arrangement installation place, air duct barrel near assembling place offers exhaust port 3, 4, , on in Fig. 1 a, lower direction of arrow indication is test air duct discharge directions 5, 6, air duct barrel near throttling arrangement installation place offers orifice and pressure tap 9, air duct 7 right side arrow direction is tested for test air duct outlet end airflow direction 12 in Fig. 1 a.
Testing apparatus frame 19 is steel, and test air duct 7 is rigid plastics.
Test air duct 7 internal diameter is consistent with hover fan internal diameter, and test blower fan and air duct 7 are connected and fixed by ring set.
Flow regulator pieces set by throttling arrangement 11 installation place has sizes, the throttling arrangement 11-1 of the first clear size of opening as shown in Figure 1, the throttling arrangement 11-2 of the second clear size of opening, the throttling arrangement 11-3 of the third clear size of opening, the throttling arrangement 11-4 of the 4th kind of clear size of opening, for adjusting air duct discharge area.
The equal exhaust port of multi-turn quantity 3,4 is offered along stack shell airflow direction.
By changing test air duct 7, meet the testing property of the hover fan system of many sizes
The gross area is vented, the performance curve of debugging hover fan system by adjustment test air duct 7.
The utility model chooses air duct of the same size as fan test test air channel according to the duct dimension in air cushion vehicle model test.The hover fan fixing air cushion vehicle model and use is installed in this air duct 7 one end, carries be for experiment compressor flow and pressure; The other end can install the throttling arrangement 11 being provided with various sizes, convenient adjustment outlet drainage area.Hover fan system is connected with modulator, rotates " frequency adjustment " button on modulator, regulates fanman's working frequency, thus adjustment rotation speed of fan, and then reach the object of adjustment compressor flow.
Air duct 7 one end of blower fan is being installed, according to the practical structures situation of hover fan system in air cushion vehicle model test, determine in air duct port a distance, according to correlation computations, the identical exhaust port of a series of area 3,4 is opened around stack shell, simultaneously in order to clearly represent that the different exhaust port gross area is on the characteristic impact of fan performance, is defined as leaving area ratio by the exhaust port gross area and the ratio of air duct sectional area.At air duct 7 the other end, the stack shell place perforate 9 of distance outlet port certain position, respectively for pressure and flow tester.
Air duct 7 integral installation set is fixed on the brandreth 19 designed in advance, start blower fan, namely can start to test fan performance: fixing rotation speed of fan, the size of adjustment throttling arrangement 11, namely adjust the drainage area of outlet, thus the performance characteristic of tested blower fan system can be obtained.Step is as follows:
A, as shown in Figure 1, according to test actual conditions, is arranged in test air duct near suction port 2 place, pressure and flow-measurement orifice 9 is arranged near air outlet 10 place by exhaust port 3,4;
B, as shown in Figure 2 and Figure 3, is firmly arranged on test air duct in the fixing device 15,19 designed, then adjusts rotation speed of the fan n, by frequency variator, frequency is transferred to designated value, thus determines rotation speed of fan, and stablize rotation speed of fan;
C, fan flow are measured: according to installation diagram, and the probe of flowmeter 17 is stretched to air duct central position by flow measuring point, then after current stabilization, record a flow value every 5 seconds, and record 10 value, gets its mean value altogether;
D, blower fan total pressure measurement: according to installation diagram, and the Pitot tube 18 pressure test pipe of flowmeter being received pressure-measuring-point place, after air duct flow field is stable, directly read force value.
When blower fan is under certain constant rotational speed, determine certain ventilation aperture area, finally by adjustment throttling arrangement, i.e. Adjustment Tests air duct discharge area (getting multiple discharge area), repeat above-mentioned pressure and flow test process, record pressure and the flow of different discharge area, under certain rotating speed of blower fan can be drawn out, the pressure under certain leaving area and flow curve.
In order to debug out the hover fan working state of system meeting test requirements document, leaving area ratio on the one hand in adjustment debugging apparatus on air duct, namely by adjustment exhaust port gross area size, the surge area (i.e. fan performance unstable region) of hover fan can be moved, make its away from or depart from the projected working point of hover fan system; On the other hand, then by the rotating speed of adjustment blower fan, namely by increasing or reduce the rotating speed of blower fan, make hover fan when flow is identical, its pressure increase or reduction.By these two behaves, the change of the blower fan system performance characteristic that hovers just can be adjusted.Through the continuous repetition test of aforesaid way, namely adjustable goes out under certain leaving area when certain rotating speed, meet the hover fan system performance characteristics curve of test requirements document, find the working state of test hover fan system simultaneously, for air cushion vehicle model test provides crucial technical support.
Claims (2)
1. a lift fan system for air cushion ship model performance curve gauging means, it is characterized in that: comprise test air duct, the external brandreth of fixing test air duct, fixing test air duct built-in brandreth is set in the external brandreth of fixing test air duct, test air duct is through the external brandreth of fixing test air duct, and be arranged in the built-in brandreth of fixing test air duct by fixing test air duct bolt, the two ends of test air duct arrange hover fan and throttling arrangement respectively, hover fan is connected and fixed by ring set with test air duct, test air duct internal diameter is consistent with hover fan internal diameter, test air duct evenly arranges test air duct relief opening by the end of hover fan side, end by throttling arrangement side on test air duct arranges the mounting hole being used for setting pressure testing instrument and flow tester, pressure tester and flow tester are arranged on test air duct by mounting hole, the probe of pressure tester and flow tester is positioned at test air duct inside.
2. a kind of lift fan system for air cushion ship model performance curve gauging means according to claim 1, it is characterized in that: described throttling arrangement is the annulus that centre arranges through hole, not etc., throttling arrangement is not changed according to the size of through hole in the end of test air duct to hole size between throttling arrangement.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520073727.2U CN204493246U (en) | 2015-01-30 | 2015-01-30 | A kind of lift fan system for air cushion ship model performance curve gauging means |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520073727.2U CN204493246U (en) | 2015-01-30 | 2015-01-30 | A kind of lift fan system for air cushion ship model performance curve gauging means |
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| CN204493246U true CN204493246U (en) | 2015-07-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632681A (en) * | 2015-01-30 | 2015-05-20 | 哈尔滨工程大学 | Hovercraft model hover fan system characteristic performance curve detecting and adjusting device |
| CN108252943A (en) * | 2018-01-08 | 2018-07-06 | 上海理工大学 | Specified centrifugal blower flow and the method for the pressure slope of curve |
| CN111666722A (en) * | 2020-05-12 | 2020-09-15 | 哈尔滨工程大学 | Hovercraft lifting system model construction method |
-
2015
- 2015-01-30 CN CN201520073727.2U patent/CN204493246U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632681A (en) * | 2015-01-30 | 2015-05-20 | 哈尔滨工程大学 | Hovercraft model hover fan system characteristic performance curve detecting and adjusting device |
| CN108252943A (en) * | 2018-01-08 | 2018-07-06 | 上海理工大学 | Specified centrifugal blower flow and the method for the pressure slope of curve |
| CN111666722A (en) * | 2020-05-12 | 2020-09-15 | 哈尔滨工程大学 | Hovercraft lifting system model construction method |
| CN111666722B (en) * | 2020-05-12 | 2023-01-03 | 哈尔滨工程大学 | Hovercraft lifting system model construction method |
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