CN208333845U - A kind of aircraft fuel tank discharge valve tester - Google Patents
A kind of aircraft fuel tank discharge valve tester Download PDFInfo
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- CN208333845U CN208333845U CN201821050701.6U CN201821050701U CN208333845U CN 208333845 U CN208333845 U CN 208333845U CN 201821050701 U CN201821050701 U CN 201821050701U CN 208333845 U CN208333845 U CN 208333845U
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- valve
- pressure
- fuel tank
- gas source
- tank discharge
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Abstract
The utility model provides a kind of aircraft fuel tank discharge valve tester, it includes cabinet, panel is installed in the cabinet, be provided on the panel positive pressure measurement circuit and negative pressure measurement circuit parallel with one another and with the concatenated secure line of the two, wherein, positive pressure measurement circuit includes the gas source interface A being serially connected, constant pressure valve and reset valve I, pressure gauge connection H is connected on constant pressure valve, negative pressure measurement circuit includes the gas source interface G being serially connected, reset valve II, negative pressure generator and straight-through valve with positive pressure and negative port, secure line includes the pipe interface being serially connected, air filter, pressure gauge connection C and relief valve, the tester is in the positive/negative-pressure test for executing discharge valve, pressure is stablized, control is accurate, securely and reliably, and generally body structure, it is easy to carry.
Description
Technical field
The utility model relates to a kind of aircraft fuel tank discharge valve, especially a kind of aircraft fuel tank discharge valve test
Instrument.
Background technique
Discharge valve is that the important component of fuel tanker protection need to be held according to the requirement of Boeing-737 NG Aircraft Maintenance Program
Row routine work card " 28-020-01/02 operation inspection left/right ventilate fuel tank discharge valve ", it is desirable that respectively using positive pressure gas source and
Negative pressure gas source tests discharge valve, since pressure needed for testing is relatively low, is mentioned at present by using small-sized electric pump
Test job is carried out for positive pressure and negative pressure.
The pressure transient that small-sized electric pump used at present provides, adjusting pressure is inaccurate, cannot fully meet test
Required precision；It needs to remove again when positive/negative-pressure is tested and switched and connecting line, operation is comparatively laborious；In addition, this is small-sized
Electrodynamic pump uses 110V power supply, needs to complete transformation by transformer, there is safety using the electrodynamic pump in fuel tanker region
Hidden danger, here it is existing deficiencies in the technology.
Utility model content
The technical problems to be solved in the utility model aiming at deficiency of the prior art, and provides a kind of fly
Machine fuel tank discharge valve tester, which, which can be realized, is precisely controlled, and working service is convenient.
This programme is achieved by the following technical measures: the aircraft fuel tank discharge valve tester includes cabinet,
Panel is installed in the cabinet, be provided on the panel positive pressure measurement circuit and negative pressure measurement circuit parallel with one another and
With the concatenated secure line of the two, wherein positive pressure measurement circuit includes gas source interface A, constant pressure valve and the reset valve being serially connected
I, pressure gauge connection H is connected on constant pressure valve, and negative pressure measurement circuit includes the gas source interface G being serially connected, reset valve II, negative pressure
Generator and straight-through valve with positive pressure and negative port, secure line includes the pipe interface being serially connected, air filtration
Device, pressure gauge connection C and relief valve.
Above-mentioned positive pressure measurement circuit, negative pressure measurement circuit and secure line are located in the cabinet of below the panel, and on panel
It is provided with and gas source interface A, constant pressure valve, reset valve I, pressure gauge connection H, gas source interface G, reset valve II, negative pressure generator, straight
Port valve, pipe interface, air filter, pressure gauge connection C and the corresponding installing port of relief valve.
Above-mentioned constant pressure valve, reset valve I, reset valve II and straight-through valve adjusting knob be located above panel.
Above-mentioned constant pressure valve passes through connecting tube respectively and connect with gas source interface A, pressure gauge connection H and reset valve I.
The output end of above-mentioned reset valve I is connected with three-way connection A, the another two port point of three-way connection A by connecting tube
Not Tong Guo connecting tube connect with straight-through valve and four-way connection, the upper port of four-way connection is connected with screw plug, lower port and lets out
Pressure valve connection, remaining a port are connected with three-way connection B by connecting tube.
The another two port of above-mentioned three-way connection B is connect with air filter and pressure gauge connection C respectively, air filter
It is connect by connecting tube with pipe interface.
Above-mentioned straight-through valve also passes through connecting tube and connect with negative pressure generator.
The input end of above-mentioned reset valve II is connect by connecting tube with gas source interface G, outlet end passes through connecting tube and negative pressure
Generator connection.
Above-mentioned panel include position in lower aluminium alloy fixed plate and position in upper indication panel.
The beneficial effect of this programme can according to the description of the above program, the aircraft fuel tank discharge valve tester
In, when executing test job, the hangar gas source provided by Large Electric pump is selected as power by the switching of straight-through valve
Positive pressure or negative pressure, when doing positive pressure test, pressure that compressed air depressurizes bleed pressure by constant pressure valve and keeps constant
Power output, then controls the flow of output pressure by reset valve I, and relief valve can prevent operation error from causing to pressure gauge connection
The damage of C and discharge valve, air filter may filter that impurity and moisture in compressed air, recorded by pressure gauge connection C
Numerical value when discharge valve actuation；When doing negative pressure test, straight-through valve is switched into negative pressure position, utilizes negative pressure generator siphon
Principle generate negative pressure, by reset valve II control compressed gas source flow, pass through pressure gauge connection C record the actuation of discharge valve
When numerical value.The tester in the positive/negative-pressure test for executing discharge valve, stablize, and control is accurate by pressure, securely and reliably, and it is whole
Body is body structure, easy to carry.It can be seen that the utility model is compared with prior art, there are substantive distinguishing features outstanding
And significant progress, beneficial effects of its implementation are also obvious.
Detailed description of the invention
Fig. 1 is the structural schematic diagram one of specific embodiment of the present invention.
Fig. 2 is the structural schematic diagram two of specific embodiment of the present invention.
Fig. 3 is the structural schematic diagram of panel.
Fig. 4 is the configuration schematic diagram of specific embodiment of the present invention.
Fig. 5 is the attachment structure schematic diagram of tester and aircraft fuel tank discharge valve in the application.
Fig. 6 is the structural schematic diagram of aircraft fuel tank discharge valve.
In figure, 1- pipe interface, 2- panel, 3- air filter, 4- pressure gauge connection C, 5- cabinet, 6- relief valve, 7-
Straight-through valve, 8- negative pressure generator, 9- reset valve I, 10- constant pressure valve, 11- reset valve II, 12- pressure gauge connection H, 13- gas source connect
Mouth G, 14- gas source interface A, 15- connecting tube, 16- four-way connection, 17- three-way connection B, 18- negative pressure measurement circuit, 19- positive pressure are surveyed
Try route, 20- secure line, 21- indication panel, 22- aluminium alloy fixed plate, 23- pipe interface adapter, 24- three-way connection A
Adapter, 25- air filter connectivity port, 26- gas source interface A adapter, 27- three-way connection B adapter, 28- pressure gauge
Interface H adapter, 29- four-way connection connectivity port, I adapter of 30- reset valve, the connectivity port 31- pressure gauge connection C, 32- spiral shell
Line plug, 33- straight-through valve connectivity port, 34- four-way connection connectivity port, I connectivity port of 35- three-way connection A, 36- reset valve,
37- negative pressure generator adapter, 38- negative pressure generator connectivity port, the connectivity port 39- gas source interface G.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to we
Case is illustrated.
A kind of aircraft fuel tank discharge valve tester, as shown, it includes openable and closable cabinet 5, in the cabinet 5
Panel 2 is installed, the panel 2 is including position in lower aluminium alloy fixed plate 22 and position in upper indication panel 21, index plane
Plate 21 surface air brushing colored the corresponding interface title and connection line pass through the adhesive glue and aluminium alloy fixed plate at the back side itself
22 fit together, and the more common paint spraying of colored indication panel is easier to process and identify.It is provided on the panel 2
Positive pressure measurement circuit 19 and negative pressure measurement circuit 18 parallel with one another and with the concatenated secure line 20 of the two, wherein positive pressure
Measurement circuit 19 includes gas source interface A14, constant pressure valve 10 and the reset valve I 9 being serially connected, and is connected with pressure gauge on constant pressure valve 10
Interface H12, constant pressure valve 10 for realizing compressed gas source decompression and pressure output function, it is ensured that the output of constant pressure, control
System is accurate.The pressure gauge connection H12 connected on constant pressure valve 10 is for connecting pressure gauge, to monitor the size of pressure output value, leads to
Crossing gas source interface A14 can quickly connect with hangar gas source, convenient and reliable, and the flow of pressure is accurately controlled by reset valve I 9.
The negative pressure measurement circuit 18 include be serially connected gas source interface G13, reset valve II 11, negative pressure generator 8 with
And the straight-through valve 7 with positive pressure and negative port, it can quickly be connect with hangar gas source by gas source interface G13, it is convenient and reliable, lead to
Negative pressure generator 8 is crossed to realize negative pressure function, the structure of straight-through valve 7 uses the prior art, as Shanghai step is limited up to metal product
The straight-through valve of 304 Φ 6*4mm of company's production, positive pressure measurement circuit 19 and negative pressure measurement circuit 18 are integrated on panel 2, are led to
Cross the control that positive/negative-pressure is realized in the switching of straight-through valve 7.It is directly realized by positive/negative-pressure control by single straight-through valve 7, reduces pipe
Connection, the dismounting on road, the flow of pressure is accurately controlled by reset valve II 11.
The secure line 20 includes pipe interface 1, air filter 3, pressure gauge connection C4 and the pressure release being serially connected
Valve 6, relief valve 6 can prevent operation error from causing pressure excessive and damaging precision pressure gauge and discharge valve, and air filter 3 is right
Air in compressed gas source is filtered, and is filtered out impurity and moisture therein, can be prevented impurity and moisture from entering fuel tank internal.
The positive pressure measurement circuit 19, negative pressure measurement circuit 18 and secure line 20 are located in the cabinet 5 of 2 lower section of panel,
And it is provided on panel 2 and gas source interface A14, constant pressure valve 10, reset valve I 9, pressure gauge connection H12, gas source interface G13, fine tuning
Valve II 11, negative pressure generator 8, straight-through valve 7, pipe interface 1, air filter 3, pressure gauge connection C4 and relief valve 6 are corresponding
Installing port, the constant pressure valve 10, reset valve I 9, reset valve II 11 and straight-through valve 7 adjusting knob be located at 2 top of panel.Using
After this structure type, complicated pipeline jointing construction is placed in the cabinet 5 of 2 lower section of panel, and 2 top of panel only shows each
Adjusting knob and installing port, compact-sized, when testing, staff can clearly judge that the station to be operated is gone forward side by side
Row operation, avoids the maloperation occurred due to complex circuit.
The constant pressure valve 10 is connected by connecting tube 15 and gas source interface A14, pressure gauge connection H12 and reset valve I 9 respectively
It connects, the output end of reset valve I 9 is connected with three-way connection A35, the another two port difference of three-way connection A35 by connecting tube 15
It is connect by connecting tube 15 with straight-through valve 7 and four-way connection 16, the upper port of four-way connection 16 is connected with screw plug 32, lower end
Mouth is connect with relief valve 6, and remaining a port is connected with three-way connection B17, the another two of three-way connection B17 by connecting tube 15
Port is connect with air filter 3 and pressure gauge connection C4 respectively, and air filter 3 is connected by connecting tube 15 and pipe interface 1
It connects, straight-through valve 7 is also connect by connecting tube 15 with negative pressure generator 8, and the input end of reset valve II 11 passes through connecting tube 15 and gas
Source interface G13 connection, outlet end are connect by connecting tube 15 with negative pressure generator 8.Above-mentioned connecting tube 15 is all made of hose.
The working principle of the tester:
Tester M: being connect by original state by hose N with aircraft fuel tank discharge valve L, specifically, hose N mono-
Hold connectivity port K, the pipe interface 1 of other end connecting test instrument；Extremely by constant pressure valve 10, reset valve I 9, the rotation of reset valve II 11
Precision pressure gauge is connect by closed state with pressure gauge connection H12 and pressure gauge connection C4.
Positive pressure test: hangar compressed gas source is accessed gas source interface A14, adjusts constant pressure by rotary feedthrough valve 7 to positive pressure position
Then pressure needed for pressure gauge is shown at valve 10 to pressure gauge connection H12 slowly adjusts reset valve I 9, observe pressure gauge connection C4
Locate pressure gauge show numerical value, discharge valve actuation moment check pressure gauge show numerical value whether in pressure given range, and
Record the numerical value.Gas flow when positive pressure is tested: constant pressure valve 10, pressure gauge are flowed to by connecting tube 15 from gas source interface A14
The pressure of pressure gauge real-time measurement constant pressure valve 10 at interface H12, gas is from constant pressure valve 10 followed by reset valve I 9, relief valve
6, at pressure gauge connection C4 after pressure gauge, air filter 3, pipe interface 1 is finally reached.
Negative pressure test: rotary feedthrough valve 7 to negative pressure position closes constant pressure valve 10 and reset valve I 9, by hangar compressed gas source
Gas source interface G13 is accessed, reset valve II 11 is then slowly adjusted, pressure gauge at pressure gauge connection C4 is observed and shows numerical value, releasing
Pressure valve actuation moment checks that pressure gauge shows that numerical value whether in pressure given range, and records the numerical value.Negative pressure tests gas
Body flow direction: gas successively flows to reset valve II 11 and negative pressure generator 8 through connecting tube 15 from gas source interface G13, and negative pressure is sent out at this time
Raw device 8 generates siphon principle, gas successively interface 1, air filter 3, pressure gauge, relief valve at pressure gauge connection C4 by the road
6 and straight-through valve 7 after reach negative pressure generator 8.
In positive pressure test and negative pressure test, the hangar gas source that Large Electric pump provides is realizing discharge valve just as power
Negative pressure test, pressure are stablized, and fuel tank area uses pneumatic tool, safer and more reliable.The tester can reach 737NG aircraft
Requirement needed for customary work card " 28-020-01/02 operation inspection left/right ventilation fuel tank discharge valve ".
Technical characteristic in the utility model without description can be realized by or using the prior art, no longer superfluous herein
It states, certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to above embodiment,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model, are also answered
Belong to the protection scope of the utility model.
Claims (9)
1. a kind of aircraft fuel tank discharge valve tester is equipped with panel in the cabinet it is characterized in that: it includes cabinet,
Be provided on the panel positive pressure measurement circuit and negative pressure measurement circuit parallel with one another and with the concatenated secure line of the two,
Wherein, positive pressure measurement circuit includes the gas source interface A, constant pressure valve and reset valve I being serially connected, and is connected with pressure gauge on constant pressure valve
Interface H, negative pressure measurement circuit include the gas source interface G being serially connected, reset valve II, negative pressure generator and have positive pressure and bear
The straight-through valve of pressure side mouth, secure line include the pipe interface being serially connected, air filter, pressure gauge connection C and relief valve.
2. aircraft fuel tank discharge valve tester according to claim 1, it is characterized in that: the positive pressure measurement circuit,
Negative pressure measurement circuit and secure line are located in the cabinet of below the panel, and be provided on panel with gas source interface A, constant pressure valve,
Reset valve I, pressure gauge connection H, gas source interface G, reset valve II, negative pressure generator, straight-through valve, pipe interface, air filter,
Pressure gauge connection C and the corresponding installing port of relief valve.
3. aircraft fuel tank discharge valve tester according to claim 2, it is characterized in that: the constant pressure valve, reset valve
I, the adjusting knob of reset valve II and straight-through valve is located above panel.
4. aircraft fuel tank discharge valve tester according to claim 1,2 or 3, it is characterized in that: the constant pressure valve point
Not Tong Guo connecting tube connect with gas source interface A, pressure gauge connection H and reset valve I.
5. aircraft fuel tank discharge valve tester according to claim 4, it is characterized in that: the output of the reset valve I
End is connected with three-way connection A by connecting tube, and the another two port of three-way connection A passes through connecting tube and straight-through valve and four-way respectively
Connector connection, the upper port of four-way connection are connected with screw plug, lower port and relief valve and connect, and remaining a port passes through company
Adapter tube is connected with three-way connection B.
6. aircraft fuel tank discharge valve tester according to claim 5, it is characterized in that: the three-way connection B's is another
Two ports are connect with air filter and pressure gauge connection C respectively, and air filter is connect by connecting tube with pipe interface.
7. aircraft fuel tank discharge valve tester according to claim 6, it is characterized in that: the straight-through valve also passes through company
Adapter tube is connect with negative pressure generator.
8. aircraft fuel tank discharge valve tester according to claim 7, it is characterized in that: the import of the reset valve II
End is connect by connecting tube with gas source interface G, outlet end is connect by connecting tube with negative pressure generator.
9. aircraft fuel tank discharge valve tester according to claim 8, it is characterized in that: the panel includes that position exists
Lower aluminium alloy fixed plate and position are in upper indication panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821050701.6U CN208333845U (en) | 2018-07-04 | 2018-07-04 | A kind of aircraft fuel tank discharge valve tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821050701.6U CN208333845U (en) | 2018-07-04 | 2018-07-04 | A kind of aircraft fuel tank discharge valve tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208333845U true CN208333845U (en) | 2019-01-04 |
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ID=64786253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821050701.6U Active CN208333845U (en) | 2018-07-04 | 2018-07-04 | A kind of aircraft fuel tank discharge valve tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208333845U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507781A (en) * | 2018-07-04 | 2018-09-07 | 山东航空股份有限公司 | A kind of aircraft fuel tank release of pressure valve tester and test method |
-
2018
- 2018-07-04 CN CN201821050701.6U patent/CN208333845U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507781A (en) * | 2018-07-04 | 2018-09-07 | 山东航空股份有限公司 | A kind of aircraft fuel tank release of pressure valve tester and test method |
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