CN103823178A - High and low torque pressure switch tester - Google Patents
High and low torque pressure switch tester Download PDFInfo
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- CN103823178A CN103823178A CN201210464208.XA CN201210464208A CN103823178A CN 103823178 A CN103823178 A CN 103823178A CN 201210464208 A CN201210464208 A CN 201210464208A CN 103823178 A CN103823178 A CN 103823178A
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- throw switch
- spdt
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Abstract
The invention belongs to the technical field of aircraft electrical testing, and particularly relates to a high and low torque pressure switch tester. The switch tester comprises single-pole double-throw switches (S1) and (S2), indication lamps (L1) and (L2), a fuse (F) and a voltmeter. A DC source is connected with the single-pole double-throw switch (S1) via the fuse (F), one end of the single-pole double-throw switch (S1) is connected with the single-pole double-throw switch (S2), the other end of the single-pole double-throw switch (S1) is connected with the voltmeter, one end of the single-pole double-throw switch (S2) is connected with the indication lamp (L1), the other end of the single-pole double-throw switch (S2) is connected with the indication lamp (L2), and the voltmeter, the indication lamp (L1) and the indication lamp (L2) are connected with the cathode end of the source. On one hand, the tester can perform comprehensive performance testing on a high and low torque pressure switch, a fault product is prevented from being directly installed, and the efficiency and quality of an aircraft assembly are improved; and on the other hand, the test process is simplified, and the working efficiency is improved.
Description
Technical field
The invention belongs to aircraft electrical test technical field, particularly relate to a kind of height moment of torsion pressure test switch.
Background technology
Height moment of torsion pressure switch, for screw propeller autofeather system, when this system is mainly used in taking off, in an engine failure parking situation, makes its screw propeller autofeather reduce flight resistance.Autofeather system is made up of skateboard component, high and low moment of torsion pressure switch, overspeed governor solenoid valve, gauge tap and electric wiring.Height moment of torsion pressure switch plays vital effect in this system, before installation, must carry out verification to it, guarantees that it is functional, otherwise can affect the work of whole autofeather system.This chamber does not also have the checkout equipment for this component at present.
When screw propeller is mainly used in taking off along slurry system automatically, in an engine failure parking situation, make its screw propeller automatically reduce flight resistance along slurry.
Screw propeller autofeather system principle of work is as follows, as shown in Figure 1:
When automatically, along starching gauge tap in " preparation " position, while being pushed into the above position of 90%Ng before two power bars, high moment of torsion pressure switch switches on power, and automatically switches on power along slurry relay.Meanwhile, low moment of torsion pressure switch switches on power, and automatically along slurry solenoid valve deenergization, at this moment on comprehensive aobvious device CAS window, " L Autofeather Active " and " R AutofeatherActive " blue-green type matrix show.
If the moment of torsion of Left Hand Engine is while dropping to the cut off value of height moment of torsion pressure switch due to failure cause, rightly sends out low moment of torsion pressure switch circuit and be disconnected, the disappearance of " RAutofeather Active " type matrix.If moment of torsion continues to drop to the cut off value of low moment of torsion pressure switch when following, " LAutofeather Active " captions also disappear, and connect left side overspeed governor automatically along slurry solenoid valve simultaneously, and the left screw propeller of sending out is along slurry.The order that when right fault, Subtitle Demonstration disappears is sent out contrary with a left side.
In the time of ground, will automatically be put into " test " position along slurry switch, check automatically and whether normally work along slurry system.Should make power bar position more than being greater than the connection value (10871b.ft) of high moment of torsion pressure switch, the energising of assurance system.At this moment by the way of post-tensioning power bar, reduce moment of torsion, simulated engine malfunction.
The screw propeller autofeather system course of work is as follows:
Before taking off, will automatically be placed on " preparation " position along slurry gauge tap, if in take-off process, an engine failure for a certain reason, when moment of torsion drops to certain value, makes corresponding screw propeller automatically along slurry along slurry system automatically.Disconnect the suitable slurry circuit automatically of another engine, guaranteeing can only single-shot suitable slurry automatically simultaneously.
Summary of the invention
The technical problem to be solved in the present invention:
This exerciser can be tested the properties of height moment of torsion pressure switch.Ensure flight, reduce the rate of breakdown of aircraft.
Technical scheme of the present invention:
Height moment of torsion pressure switch exerciser is for the properties of height moment of torsion pressure switch is detected, and this exerciser is mainly the testing apparatus that judges switch quality state by height moment of torsion pressure switch being carried out to supercharging and decompression.
Height moment of torsion pressure switch exerciser, switch test device comprises single-pole double-throw switch (SPDT) S1, S2, pilot lamp L1, L2, fuse F and a voltage table; Wherein, direct supply is connected with single-pole double-throw switch (SPDT) S1 through fuse F, single-pole double-throw switch (SPDT) S1 one end is connected with single-pole double-throw switch (SPDT) S2, the single-pole double-throw switch (SPDT) S1 other end is connected with voltage table, single-pole double-throw switch (SPDT) S2 one end is connected with pilot lamp L1, the single-pole double-throw switch (SPDT) S2 other end is connected with pilot lamp L2, and voltage table, pilot lamp L1 and pilot lamp L2 connect power supply negative terminal.
Beneficial effect of the present invention:
The present invention is reasonable in design, and staff is in the time detecting height moment of torsion pressure switch, outside connection simply, easy and simple to handle.This exerciser can carry out all round properties test to height moment of torsion pressure switch on the one hand, avoids fault product directly to install, thereby improves efficiency and the quality of aircraft general assembly, has simplified on the other hand test routine, has improved work efficiency.
Accompanying drawing explanation
Fig. 1 is screw propeller autofeather system electrical schematic diagram;
Fig. 2 is that the present invention uses view;
Fig. 3 is circuit theory diagrams of the present invention, and wherein, F is fuse, and S1 is single-pole double-throw switch (SPDT), and S2 is single-pole double-throw switch (SPDT), and L1, L2 are pilot lamp.
Embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated.In global design process of the present invention, selecting of components and parts all meets GJB546-1996 component quality assurance standard.
Height moment of torsion pressure switch exerciser, switch test device comprises single-pole double-throw switch (SPDT) S1, S2, pilot lamp L1, L2, fuse F and a voltage table; Wherein, direct supply is connected with single-pole double-throw switch (SPDT) S1 through fuse F, single-pole double-throw switch (SPDT) S1 one end is connected with single-pole double-throw switch (SPDT) S2, the single-pole double-throw switch (SPDT) S1 other end is connected with voltage table, single-pole double-throw switch (SPDT) S2 one end is connected with pilot lamp L1, the single-pole double-throw switch (SPDT) S2 other end is connected with pilot lamp L2, and voltage table, pilot lamp L1 and pilot lamp L2 connect power supply negative terminal.
When test, digital pressure gauge is received in 220V AC power, then 28V direct supply is connected with height moment of torsion pressure switch exerciser with 220V AC power.With reference to figure 1, direct current 28V power supply is connected with single-pole double-throw switch (SPDT) S1 after fuse F current foldback circuit; Single-pole double-throw switch (SPDT) S1 one end is connected with single-pole double-throw switch (SPDT) S2, and before energising, single-pole double-throw switch (SPDT) S1, S2 are all in to upper/lower positions; The single-pole double-throw switch (SPDT) S1 other end is connected with voltage table, and this voltage table is used for testing whether place in circuit of 28V direct supply; Single-pole double-throw switch (SPDT) S2 one end is connected with pilot lamp L1, and the single-pole double-throw switch (SPDT) S2 other end is connected with pilot lamp L2; Indication when pilot lamp L1, L2 are used to indicate the supercharging of height moment of torsion pressure switch with decompression.
Use procedure of the present invention is as follows:
1) before energising, check
Connect the line by Fig. 1, check that whether wiring is firm.
Digital pressure gauge is received in 220V AC power, then 28V direct supply is connected with exerciser with 220V AC power.S1, S2 are in open mode.
2) performance test
Closing Switch S1, connects 28V.Closing Switch S2, starts test.
A. zero pressure test
Press Fig. 3 signal, the state of pressure switch is that A, B connect.Now L2 lamp should ignite.
B. pressurized test
When L1 lamp ignites, the force value of high moment of torsion pressure switch is 0.0876～0.0931Mpa; The force value of low moment of torsion pressure switch is 0.0600 to 0.0655Mpa.Continue to be pressurized to 0.6Mpa to pressure switch, L1 lamp should ignite and not dodge always.
C. decompression test
Slowly reduce pressure to pressure switch, in the time that L1 lamp extinguishes L2 lamp and ignites, the state of switch be " B ", A, B connection.Now high moment of torsion pressure switch minimum is 0.0758Mpa; Low moment of torsion pressure switch force value should be 0.0483～0.0585Mpa.After being completed, close instrument power source, remove cable and wire, put instrument in order.Left-handed pressure bed handle, draws back oil, opens lubricating cup valve, and dextrorotation pressure bed handle, enters lubricating cup by oil pressure, pulls down height moment of torsion pressure switch.
Points for attention: high moment of torsion pressure switch is as the criterion with supercharging connection value, low moment of torsion pressure switch is as the criterion with decompression cut off value, and its residual value is reference.
Claims (1)
1. height moment of torsion pressure switch exerciser, is characterized in that, this switch test device comprises single-pole double-throw switch (SPDT) (S1), (S2), pilot lamp (L1), (L2), fuse (F) and a voltage table; Wherein, direct supply is connected with single-pole double-throw switch (SPDT) (S1) through fuse (F), single-pole double-throw switch (SPDT) (S1) one end is connected with single-pole double-throw switch (SPDT) (S2), single-pole double-throw switch (SPDT) (S1) other end is connected with voltage table, single-pole double-throw switch (SPDT) (S2) one end is connected with pilot lamp (L1), single-pole double-throw switch (SPDT) (S2) other end is connected with pilot lamp (L2), and voltage table, pilot lamp (L1) and pilot lamp (L2) connect power supply negative terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210464208.XA CN103823178A (en) | 2012-11-16 | 2012-11-16 | High and low torque pressure switch tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210464208.XA CN103823178A (en) | 2012-11-16 | 2012-11-16 | High and low torque pressure switch tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103823178A true CN103823178A (en) | 2014-05-28 |
Family
ID=50758333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210464208.XA Pending CN103823178A (en) | 2012-11-16 | 2012-11-16 | High and low torque pressure switch tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103823178A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109143062A (en) * | 2018-10-29 | 2019-01-04 | 上海外高桥造船有限公司 | The convenient checker of pressure switch |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6170316B1 (en) * | 1999-04-21 | 2001-01-09 | Clinton L. Aldrich | Pressure and vacuum switch testing tool |
| CN201110806Y (en) * | 2007-11-12 | 2008-09-03 | 比亚迪股份有限公司 | Pressure switch durability testing stand |
| CN201364379Y (en) * | 2009-01-19 | 2009-12-16 | 中国计量学院 | Air pressure switch multi-parameter auto-detection system |
| CN201600173U (en) * | 2010-01-06 | 2010-10-06 | 哈尔滨飞机工业集团有限责任公司 | Tester of helicopter oil gage indicator |
| CN201725018U (en) * | 2010-07-15 | 2011-01-26 | 山西兰花科技创业股份有限公司 | Vacuum circuit breaker detection device |
| CN202066945U (en) * | 2011-03-31 | 2011-12-07 | 上海天惠汽车零部件有限公司 | Pressure switch testboard for automotive air conditioners |
-
2012
- 2012-11-16 CN CN201210464208.XA patent/CN103823178A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6170316B1 (en) * | 1999-04-21 | 2001-01-09 | Clinton L. Aldrich | Pressure and vacuum switch testing tool |
| CN201110806Y (en) * | 2007-11-12 | 2008-09-03 | 比亚迪股份有限公司 | Pressure switch durability testing stand |
| CN201364379Y (en) * | 2009-01-19 | 2009-12-16 | 中国计量学院 | Air pressure switch multi-parameter auto-detection system |
| CN201600173U (en) * | 2010-01-06 | 2010-10-06 | 哈尔滨飞机工业集团有限责任公司 | Tester of helicopter oil gage indicator |
| CN201725018U (en) * | 2010-07-15 | 2011-01-26 | 山西兰花科技创业股份有限公司 | Vacuum circuit breaker detection device |
| CN202066945U (en) * | 2011-03-31 | 2011-12-07 | 上海天惠汽车零部件有限公司 | Pressure switch testboard for automotive air conditioners |
Non-Patent Citations (1)
| Title |
|---|
| 中国标准出版社第三编辑室: "《消防标准汇编 中》", 30 September 2002 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109143062A (en) * | 2018-10-29 | 2019-01-04 | 上海外高桥造船有限公司 | The convenient checker of pressure switch |
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Application publication date: 20140528 |
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