CN207263377U - A kind of fuel injector bypass leakage tests sealing device - Google Patents
A kind of fuel injector bypass leakage tests sealing device Download PDFInfo
- Publication number
- CN207263377U CN207263377U CN201721234010.7U CN201721234010U CN207263377U CN 207263377 U CN207263377 U CN 207263377U CN 201721234010 U CN201721234010 U CN 201721234010U CN 207263377 U CN207263377 U CN 207263377U
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- China
- Prior art keywords
- mandril
- sealing
- sealing block
- fuel injector
- sealing device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
It the utility model is related to a kind of fuel injector bypass leakage test sealing device, the sealing device includes mandril (1), mandril guide pad (2), sealing block (3) and cylinder, the mandril (1) is slidably arranged in mandril guide pad (2), mandril (1) one end connection sealing block (3), mandril (1) other end connection cylinder.Compared with prior art, the utility model sealing device structure is simple, sealing effect is good, improves testing efficiency.
Description
Technical field
A kind of fuel injector bypass leakage testing auxiliary device is the utility model is related to, is bypassed more particularly, to a kind of fuel injector
Leak-testing sealing device.
Background technology
Bypass leakage test is an essential procedure in fuel injector jet orifice plate production test procedure, is needed in test
Spray orifice in jet orifice plate is blocked, if spray orifice cannot block completely in the process, it will cause part testing alarm, needs
Re-start bypass leakage test, such extreme influence production efficiency.
Utility model content
The purpose of this utility model is exactly to be provided to overcome the problems of the above-mentioned prior art by a kind of fuel injector
Road leak-testing sealing device.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of fuel injector bypass leakage tests sealing device, the sealing device include mandril, mandril guide pad, sealing block and
Cylinder, the mandril are slidably arranged in mandril guide pad, described mandril one end connection sealing block, and mandril is another
The end connection cylinder.
The mandril threaded one end is connected with sealing block mounting base, and the sealing block, which is installed on the sealing block, pacifies
Fill in seat.
The sealing block is cylindrical structure, and the sealing block mounting base is equipped with matched with the sealing block
Mounting groove, the sealing block are installed with sealing block mounting base interference fit.
The end face for being used to cover fuel injector jet orifice plate on the sealing block is equipped with an arcuation groove, carries out bypass leakage
During test, on all spray orifices that the groove is covered in jet orifice plate and seal.
Sealing ring is installed in the arcuation groove.
It is equipped with the mandril guide pad and is used for the through hole that mandril slides, the mandril is matched somebody with somebody with the via clearance
Close, its fit clearance is no more than 1.
Compared with prior art, the utility model has the following advantages that：
(1) the utility model promotes mandril to be slided in mandril guide pad using cylinder, so that sealing cover is covered in spray
In the jet orifice plate of oily device, all spray orifices in jet orifice plate are sealed, it is simple and reliable for structure, and work efficiency is high；
(2) the utility model sealing block is installed on mandril by sealing block mounting base, and sealing block mounting base can be at any time
Dismounting, when needing to carry out bypass leakage test to the fuel injector jet orifice plate of different size, only need to change sealing block mounting base with
And corresponding sealing block can realize that use scope is flexibly extensive；
(3) arcuation groove is set on the utility model sealing block, and arcuation groove covers all spray orifices wherein, has fine
Sealing effect, while sealing ring is installed in arcuation groove, also further increases sealing effect so that bypass leakage is tested
Quickly smoothly complete, improve work efficiency；
(4) the utility model mandril and mandril guide pad are gap-matched, its fit clearance very little, makes mandril up push up
When as keep vertical as possible, sealing block is sealed in the center of jet orifice plate, and such part can accurately test actual bypass and let out
Leakage value.
Brief description of the drawings
Fig. 1 is the integral installation distribution structure schematic diagram that the utility model fuel injector bypass leakage tests sealing device；
Fig. 2 is the structure diagram of the utility model mandril；
Fig. 3 is the structure diagram of the utility model mandril guide pad；
Fig. 4 is the structure diagram of the utility model sealing block mounting base；
Fig. 5 is the structure diagram of the utility model sealing block.
In figure, 1 is mandril, and 2 be mandril guide pad, and 3 be sealing block, and 4 be sealing block mounting base, and 5 be mounting groove, and 6 be logical
Hole.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
As shown in Fig. 1~5, a kind of fuel injector bypass leakage tests sealing device, which includes mandril 1, mandril
Guide pad 2, sealing block 3 and cylinder, mandril 1 are slidably arranged in mandril guide pad 2,1 one end of mandril connection sealing block 3, mandril 1
The other end connects cylinder.
1 threaded one end of mandril is connected with sealing block mounting base 4, and sealing block 3 is installed in sealing block mounting base 4.With Fig. 2 institutes
Show, 1 right end seal with screwed joint block mounting base 4 of mandril, 1 left end of mandril connection cylinder.
Sealing block 3 is cylindrical structure, and sealing block mounting base 4 is equipped with mounting groove 5 matched with sealing block 3, sealing block 3
It is interference fitted and installs with sealing block mounting base 4.
The end face for being used to cover fuel injector jet orifice plate on sealing block 3 is equipped with an arcuation groove, carries out bypass leakage test
When, on all spray orifices that the groove is covered in jet orifice plate and seal, sealing ring is installed in arcuation groove, is tested
When, arcuation groove covers all spray orifices wherein, realizes good sealing effect.
It is equipped with mandril guide pad 2 and is used for the through hole 6 that mandril 1 slides, mandril 1 and 6 clearance fit of through hole, its fit clearance
No more than 1, its fit clearance very little, keeps vertical, sealing block 3 is sealed in jet orifice plate as far as possible when mandril 1 is up pushed up
Center, such part can accurately test actual bypass leakage value.
The operation principle of the utility model：When carrying out bypass leakage test, mandril guide pad 2 is fixed, the insertion of mandril 1 top
In the through hole 6 of bar guide pad 2,1 threaded one end of mandril connection sealing block mounting base 4,1 other end of mandril connection cylinder, sealing block 3
In sealing block mounting base 4, cylinder promotes mandril 1 to be slided in 1 mounting base of mandril, and sealing block 3 is pushed to fuel injector
At spray orifice plate surface, sealing block 3 is covered in jet orifice plate, and all spray orifices are located in the arcuation groove of sealing block 3, while sealing ring
Sealed, the sealing of all spray orifices in time limit jet orifice plate, next can continue bypass leakage test.
Claims (6)
1. a kind of fuel injector bypass leakage tests sealing device, it is characterised in that the sealing device includes mandril (1), mandril is led
To block (2), sealing block (3) and cylinder, the mandril (1) is slidably arranged in mandril guide pad (2), the mandril (1)
One end connection sealing block (3), mandril (1) other end connection cylinder.
A kind of 2. fuel injector bypass leakage test sealing device according to claim 1, it is characterised in that the mandril
(1) threaded one end is connected with sealing block mounting base (4), and the sealing block (3) is installed on the sealing block mounting base (4)
It is interior.
A kind of 3. fuel injector bypass leakage test sealing device according to claim 2, it is characterised in that the sealing
Block (3) is cylindrical structure, and the sealing block mounting base (4) is equipped with and described sealing block (3) the matched mounting groove
(5), the sealing block (3) is installed with sealing block mounting base (4) interference fit.
A kind of 4. fuel injector bypass leakage test sealing device according to claim 1, it is characterised in that the sealing
The end face for being used to cover fuel injector jet orifice plate on block (3) is equipped with an arcuation groove, when carrying out bypass leakage test, the groove
On all spray orifices being covered in jet orifice plate and seal.
A kind of 5. fuel injector bypass leakage test sealing device according to claim 4, it is characterised in that the arcuation
Sealing ring is installed in groove.
A kind of 6. fuel injector bypass leakage test sealing device according to claim 1, it is characterised in that the mandril
It is equipped with guide pad (2) and is used for the through hole (6) that mandril (1) slides, the mandril (1) and described through hole (6) clearance fit,
Its fit clearance is no more than 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721234010.7U CN207263377U (en) | 2017-09-25 | 2017-09-25 | A kind of fuel injector bypass leakage tests sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721234010.7U CN207263377U (en) | 2017-09-25 | 2017-09-25 | A kind of fuel injector bypass leakage tests sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207263377U true CN207263377U (en) | 2018-04-20 |
Family
ID=61919110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721234010.7U Active CN207263377U (en) | 2017-09-25 | 2017-09-25 | A kind of fuel injector bypass leakage tests sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207263377U (en) |
-
2017
- 2017-09-25 CN CN201721234010.7U patent/CN207263377U/en active Active
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