CN104483069B - Underwater detection air inlet leakage-preventing device of fuel oil tank - Google Patents
Underwater detection air inlet leakage-preventing device of fuel oil tank Download PDFInfo
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- CN104483069B CN104483069B CN201410752577.8A CN201410752577A CN104483069B CN 104483069 B CN104483069 B CN 104483069B CN 201410752577 A CN201410752577 A CN 201410752577A CN 104483069 B CN104483069 B CN 104483069B
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- cylinder sleeve
- inner disc
- injection pipe
- air inlet
- fuel tank
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Abstract
The invention relates to an underwater detection air inlet leakage-preventing device of a fuel oil tank. An air injection pipe is inserted into an upper end opening of an oil injection pipe; a rubber sleeve is arranged between the air injection pipe and the oil injection pipe; the lower end opening of the air injection pipe is rotationally connected with a mushroom-head screw; through holes are formed in the mushroom-head screw; the lower end face of the rubber sleeve leans against a flange of the mushroom-head screw; an expansion mechanism is arranged at the upper end of the air injection pipe. The expansion mechanism comprises a cylinder sleeve and an inner disc; the lower end of the inner disc is located in the cylinder sleeve; a locking air cavity is arranged between the lower end face of the inner disc and a bottom plate of the cylinder sleeve; the upper end of the air injection pipe penetrates through a central hole of the bottom plate and is connected with the center of the lower end face of the inner disc to form a whole body; the upper end opening of the cylinder sleeve is provided with a limiting clamping spring which is clamped on a necking down part on the middle of the inner disc, in an embedding manner; the inner disc is rotationally connected with an air pipe connector I and an air pipe connector II which are communicated with the central hole of the air injection pipe by an oil tank air inlet hole channel respectively, and are communicated with the locking air cavity by a cylinder body air inlet hole channel. The device can be smoothly inserted into and pulled out from the oil injection pipe and the reliable sealing also can be realized.
Description
Technical field
The present invention relates to a kind of assay device of fuel tank, detect the anti-neglected loading of air inlet under water particularly to a kind of fuel tank
Put.
Background technology
Oil fuel tube is connected with fuel tank body, the lower port of oil fuel tube is provided with the gear throttle lid that can open downwards,
When fuel oil flows into oil fuel tube, gear throttle lid is pushed open, fuel oil enters fuel tank inner chamber.After fuel oil stops flowing, gear throttle covers in bullet
It is automatically switched off in the presence of spring tension force, when stoping vehicle from travelling, fuel oil splashes and enters oil fuel tube.
After plastic fuel tank manufacture finishes, need to carry out sealing detection, need during detection to block up each valve of fuel tank
Live, the mouth of pipe of oil fuel tube fills in plug, and plug center is inserted with air injection pipe, is filled with high pressure gas from air injection pipe to the inner chamber of fuel tank
Body, then by fuel tank entirety submerged, observes fuel tank whether gas leakage.Due to needing to ensure plug and oil fuel tube and air injection pipe
Between realize sealing, between plug and oil fuel tube cooperation must closely, operator insert plug when can not be much smoother, than
Harder, fill in depth difficult to reach and require；Even if complete and filling in and seal, will fill in because the gases at high pressure of cabinets cavity have
The trend that head is released, chock plug still easily loosens scurries out.
Content of the invention
It is an object of the invention to, overcome problems of the prior art, provide a kind of fuel tank to detect air inlet under water
Leak-proof device, both can plug from oil fuel tube much smootherly, can realize reliably sealing again.
For solving above technical problem, a kind of fuel tank of the present invention detects air inlet leak-proof device, under water including fuel tank
Body, described fuel tank body is connected with oil fuel tube, and the lower port of described oil fuel tube is provided with the gear oil that can open downwards
Door closure, is inserted with air injection pipe, between the inwall of the outer wall of described air injection pipe and described oil fuel tube in the upper port of described oil fuel tube
It is provided with rubber sleeve, the lower port of described air injection pipe is provided with female thread and is connected with mushroom head screw, described mushroom head screw is along certainly
Body axis is provided with through hole, and the lower surface of described rubber sleeve is resisted against on the flange of described mushroom head screw, described air injection pipe upper
End is provided with the expansion mechanism that can make described rubber sleeve swelling.
With respect to prior art, the present invention achieves following beneficial effect：After rubber sleeve is enclosed within the periphery of air injection pipe, screw on
Mushroom head screw, then rubber sleeve with air injection pipe insertion oil fuel tube in, due to insertion when, rubber sleeve not yet swelling, therefore insert
More laborsaving than smoothly；The lower end of rubber sleeve is resisted against on the flange of mushroom head screw, mushroom head screw can prevent rubber sleeve from
Slip in air injection pipe, in the presence of expansion mechanism, pressure can also be applied to rubber sleeve, make rubber sleeve swelling, realize air injection pipe
Outer wall and oiling inside pipe wall between sealing；Then just high pressure gas can be filled with to the inner chamber of fuel tank body from air injection pipe
Body, fuel tank body is placed in and carries out leakage test under water.
As the improvement of the present invention, described expansion mechanism includes cylinder sleeve and inner disc, the upper end open of described cylinder sleeve, described cylinder
The lower port of set is closed by cylinder sleeve base plate, and the lower end of described inner disc is located in described cylinder sleeve, and the lower outer circumferential of described inner disc leads to
The inwall crossing large sealing packing ring with described cylinder sleeve realizes sealing；It is provided with locking between the lower surface of described inner disc and described cylinder sleeve base plate
Air cavity；The upper surface of described rubber sleeve is resisted against the lower section of described cylinder sleeve base plate, and the center of described cylinder sleeve base plate is provided with base plate
Heart hole, the upper end of described air injection pipe is connected as a single entity through described bottom center hole with the lower surface center of described inner disc, described bottom
The inwall of plate centre bore passes through small sealing ring and realizes sealing with described air injection pipe；The longitudinal section of described inner disc is in I-shaped, described
The upper port inwall of cylinder sleeve is embedded with spacing jump ring, and described spacing jump ring is located at the middle necking section of described inner disc, described interior
The top of disk exceeds described cylinder sleeve；Described inner disc is vertically provided with fuel tank air inlet port and cylinder body air inlet port, and described fuel tank enters
The lower end in pore road is communicated with the centre bore of described air injection pipe, and the upper end of described fuel tank air inlet port is connected with gas-tpe fitting one；
The lower end of described cylinder body air inlet port is communicated with described locking air cavity, and the upper end of described cylinder body air inlet port is connected with gas-tpe fitting
Two.During test, first air injection pipe and rubber sleeve are filled in oil fuel tube, now rubber sleeve is in relaxed state, then pass through gas
Pipe joint two and cylinder body air inlet port are filled with gases at high pressure into the locking air cavity between inner disc and cylinder sleeve base plate, large sealing packing ring with
Small sealing ring ensures the sealing of locking air cavity, and under the gas pressure in locking air cavity, inner disc is up along the inwall of cylinder sleeve, drives
Air injection pipe and mushroom head screw are up, and due to the presence of frictional force and the restriction of cylinder sleeve base plate, rubber sleeve is squeezed radially swollen
Go out until swelling, realize the sealing between the outer wall of air injection pipe and oiling inside pipe wall；Spacing jump ring is stuck in the necking section of inner disc,
Limit the up stroke of inner disc, prevent inner disc from skidding off from cylinder sleeve；Then pass through gas-tpe fitting one and fuel tank air inlet port to note
Tracheal strips are passed through gases at high pressure, gases at high pressure pass sequentially through air injection pipe, mushroom head screw, oil fuel tube reach fuel tank body interior
Chamber；Again fuel tank body is immersed under water, you can carry out air-tight test.After test finishes, will be fired by gas-tpe fitting one
The gases at high pressure of oil tank body inner chamber discharge and evacuate, then will lock the gases at high pressure emptying in air cavity by gas-tpe fitting two,
Make mushroom head screw that rubber sleeve extruding force upwards is disappeared, rubber sleeve can be relaxed, then with air injection pipe together by
Extract, carry out the test of next fuel tank.
As a further improvement on the present invention, the lower surface of described inner disc is symmetrically distributed with height identical boss.Interior
When the boss of disk lower surface can make inner disc drop to bottom, keep certain height of arch and cylinder sleeve base plate between, automatically form
Locking air cavity, is easy to the entrance of gases at high pressure.
As a further improvement on the present invention, the top cover of described inner disc is above described cylinder sleeve, described cylinder sleeve
Multiple cylinder sleeve screw holes are evenly distributed with the circumference of upper port, each cylinder sleeve screw hole extends separately down and distinguishes described in insertion
Cylinder sleeve base plate, the bottom of each described cylinder sleeve screw hole is connected with gib head lower draw-bar screw upwards respectively；Described inner disc top
Outer rim is distributed with the one-to-one inner disc screw hole with described cylinder sleeve screw hole, is connected with hook respectively in each described inner disc screw hole
Downward upper hook screw, the top of each cylinder sleeve screw hole is respectively equipped with extension spring, the lower end of each extension spring be hooked in respectively corresponding under
On hook screw, the upper end of each extension spring is stretched out respectively outside cylinder sleeve screw hole and is hooked in respectively and goes up on hook screw accordingly.Due to
Be there is very big pretightning force after swelling in rubber sleeve, even if after the pressure in locking air cavity is released, inner disc and air injection pipe from
Recast is difficult to descending with lower, now because extension spring produces very big pulling force, affects inner disc descending along cylinder sleeve, air injection pipe and mushroom head
Screw also DL synchronization, rubber sleeve is unclamped, and can swimmingly extract.
As the preferred version of the present invention, described cylinder sleeve screw hole and described inner disc screw hole be provided with six to or eight right.Draw
The pulling force that spring produces is sufficiently large and can make the steady ground downlink of inner disc.
As another improvement of the present invention, the through hole lower end of described mushroom head screw is provided with female thread and is connected with top
The lower end of pipe, described push pipe and described oil fuel tube coaxial line and push pipe pushes described gear throttle lid open.Because gear throttle lid is normally located
In closed mode, in inflation, gases at high pressure can be stoped from entering fuel tank inner chamber, even if under gas pressure, gear throttle lid is pushed away
Open, gases at high pressure get enter into fuel tank inner chamber, the resistance of gear throttle lid also can make air pressure unstable；And in off-test
Afterwards, because gear throttle lid is closed, the gases at high pressure of fuel tank inner chamber can not be discharged.After setting push pipe, gear throttle lid begins in test
It is in open mode eventually, make between fuel tank inner chamber and air injection pipe, to keep unimpeded；After off-test, gas-tpe fitting one can be passed through
Directly the gases at high pressure of fuel tank inner chamber are discharged and evacuate.
Brief description
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description, accompanying drawing only provide with reference to
Illustrate to use, be not used to limit the present invention.
Fig. 1 detects the front view of air inlet leak-proof device under water for fuel tank of the present invention.
Fig. 2 is the top perspective view of Fig. 1.
Fig. 3 is the sectional view in Fig. 2 along A-A.
Fig. 4 be fuel tank oil fuel tube be blocked after state diagram.
Fig. 5 is the top view of inner disc in the present invention.
Fig. 6 is the sectional view in Fig. 5 along B-B.
Fig. 7 detects the axonometric chart of air inlet leak-proof device under water for fuel tank of the present invention.
In figure：1. oil fuel tube；2. keep off throttle lid；2a. shutter spring；3. cylinder sleeve；3a. cylinder sleeve base plate；3b. cylinder sleeve screw
Hole；4. inner disc；4a. fuel tank air inlet port；4b. cylinder body air inlet port；4c. air injection pipe；4d. boss；4e. inner disc screw hole；5.
Spacing jump ring；6. large sealing packing ring；7. small sealing ring；8. rubber sleeve；9. mushroom head screw；10. push pipe；11. gas-tpe fittings one；
12. gas-tpe fittings two；Hook screw on 13.；14. extension springs；15. lower draw-bar screws.
Specific embodiment
As shown in Figures 1 to 7, fuel tank of the present invention detects air inlet leak-proof device under water, including fuel tank body, fuel tank
Oil fuel tube 1 is connected with body, the lower port of oil fuel tube 1 is provided with gear throttle lid 2, and the jointed shaft of gear throttle lid 2 is provided with work
Door spring 2a, the tension force of shutter spring 2a makes gear throttle lid 2 normally closed and can open downwards.Insert in the upper port of oil fuel tube 1
There is air injection pipe 4c, between the inwall of the outer wall of air injection pipe 4c and oil fuel tube 1, be provided with rubber sleeve 8, the lower port of air injection pipe 4c is provided with
Female thread and be connected with mushroom head screw 9, mushroom head screw 9 is provided with through hole along own axes.The through hole lower end of mushroom head screw 9
It is provided with female thread and is connected with push pipe 10, the lower end of push pipe 10 and oil fuel tube 1 coaxial line and push pipe 10 pushes gear throttle lid 2 open.Rubber
The lower surface of gum cover 8 is resisted against on the flange of mushroom head screw 9, and the upper end of air injection pipe 4c is provided with can make rubber sleeve 8 swelling
Expansion mechanism.
Expansion mechanism includes cylinder sleeve 3 and inner disc 4, the upper end open of cylinder sleeve 3, and the lower port of cylinder sleeve 3 is sealed by cylinder sleeve base plate 3a
Close, the lower end of inner disc 4 is located in cylinder sleeve 3, the lower outer circumferential of inner disc 4 is realized close by the inwall of large sealing packing ring 6 and cylinder sleeve 3
Envelope；It is provided with locking air cavity between the lower surface of inner disc 4 and cylinder sleeve base plate 3a.Can be symmetrically distributed with the lower surface of inner disc 4
Height identical boss 4d, when making inner disc 4 drop to bottom, keeps certain height of arch, automatic shape and cylinder sleeve base plate 3a between
Become locking air cavity, be easy to the entrance of gases at high pressure.The upper surface of rubber sleeve 8 is resisted against the lower section of cylinder sleeve base plate 3a, cylinder sleeve base plate
The center of 3a is provided with bottom center hole, and the upper end of air injection pipe 4c passes through bottom center hole and the lower surface center of inner disc 4 to be linked as one
Body, the inwall of bottom center hole passes through small sealing ring 7 and realizes sealing with air injection pipe 4c；The longitudinal section of inner disc 4 is in I-shaped, cylinder sleeve
3 upper port inwall is embedded with spacing jump ring 5, and spacing jump ring 5 is located at the middle necking section of inner disc 4, prevents inner disc 4 from cylinder sleeve
Scurry out in 3, the top of inner disc 4 exceeds cylinder sleeve 3；Inner disc 4 is vertically provided with fuel tank air inlet port 4a and cylinder body air inlet port 4b, oil
The lower end of case air inlet port 4a is communicated with the centre bore of air injection pipe 4c, and the upper end of fuel tank air inlet port 4a is connected with gas-tpe fitting one
11；The lower end of cylinder body air inlet port 4b is communicated with locking air cavity, and the upper end of cylinder body air inlet port 4b is connected with gas-tpe fitting 2 12.
The top cover of inner disc 4, above cylinder sleeve 3, the circumference of the upper port of cylinder sleeve 3 is evenly distributed with multiple cylinder sleeves
Screw hole 3b, each cylinder sleeve screw hole 3b extend and difference insertion cylinder sleeve base plate 3a separately down, the bottom of each cylinder sleeve screw hole 3b
It is connected with gib head lower draw-bar screw 15 upwards respectively；The outer rim at inner disc 4 top is distributed with and is corresponded with cylinder sleeve screw hole 3b
Inner disc screw hole 4e, be connected with the downward upper hook screw 13 of gib head, each cylinder sleeve screw hole in each inner disc screw hole 4e respectively
The top of 3b is respectively equipped with extension spring 14, and the lower end of each extension spring 14 is hooked on corresponding lower draw-bar screw 15 respectively, each extension spring 14 upper
End is stretched out respectively outside cylinder sleeve screw hole 3b and is hooked in respectively and goes up accordingly on hook screw 13.Cylinder sleeve screw hole 3b and inner disc screw
Hole 4e can be provided with six to or eight right.
During test, rubber sleeve 8 is enclosed within behind the periphery of air injection pipe 4c, screws on mushroom head screw 9, then screw on push pipe 10, so
Rubber sleeve 8 and push pipe 10 insert in oil fuel tube 1 with air injection pipe 4c afterwards, because, during insertion, rubber sleeve 8 is in relaxed state, therefore
Insertion ratio is smoothly laborsaving；The lower end of rubber sleeve 8 is resisted against on the flange of mushroom head screw 9, and mushroom head screw 9 can prevent rubber
Gum cover 8 slips from air injection pipe 4c, and the lower end of push pipe 10 is pushed open keeping off throttle lid 2, makes air injection pipe 4c and fuel tank inner chamber keep smooth
Logical.Then pass through gas-tpe fitting 2 12 and cylinder body air inlet port 4b fills into the locking air cavity between inner disc 4 and cylinder sleeve base plate 3a
Enter gases at high pressure, large sealing packing ring 6 ensures the sealing of locking air cavity with small sealing ring 7, under the gas pressure in locking air cavity, interior
Disk 4 is up along the inwall of cylinder sleeve 3, drives air injection pipe 4c and mushroom head screw 9 up, at this moment mushroom head screw 9 arrives cylinder sleeve base plate
The distance between 3a shortens, and rubber sleeve 8 is squeezed radial direction expansion until swelling, realizes outer wall and the oil fuel tube 1 of air injection pipe 4c
Sealing between inwall.Spacing jump ring 5 is stuck in the necking section of inner disc 4, limits the up stroke of inner disc 4, prevents inner disc 4 from cylinder
Skid off in set 3.Then pass through gas-tpe fitting 1 and fuel tank air inlet port 4a is passed through gases at high pressure, high pressure gas into air injection pipe 4c
Body passes sequentially through air injection pipe 4c, mushroom head screw 9, the inner chamber of oil fuel tube 1 arrival fuel tank body；Again by fuel tank body submergence
In under water, you can carry out air-tight test.
After test finishes, by gas-tpe fitting 1, the gases at high pressure of fuel tank chamber body are discharged and quickly extract out,
Pass through gas-tpe fitting 2 12 again and will lock the gases at high pressure emptying in air cavity, make mushroom head screw 9 extruding to rubber sleeve 8 upwards
Power disappears, because rubber sleeve 8 is had very big pretightning force after swelling, even if after the pressure in locking air cavity is released, inner disc 4
And air injection pipe 4c is very difficult descending under Gravitative Loads, now because extension spring 14 produces very big pulling force, affects inner disc 4 along cylinder sleeve 3
Descending, air injection pipe 4c and mushroom head screw 9 also DL synchronization, rubber sleeve 8 are unclamped, can swimmingly extract, carry out the next one
The test of fuel tank.
The foregoing is only the preferable possible embodiments of the present invention, the non-patent protection model therefore limiting to the present invention
Enclose.In addition to the implementation, the present invention can also have other embodiment.All employing equivalents or the skill of equivalent transformation formation
Art scheme, all falls within the protection domain of application claims.The present invention can pass through or using existing without the technical characteristic of description
There is technology to realize, will not be described here.
Claims (5)
1. a kind of fuel tank detects air inlet leak-proof device under water, including fuel tank body, described fuel tank body is connected with note
Oil pipe, the lower port of described oil fuel tube the gear throttle lid that can open downwards is installed it is characterised in that：Described oil fuel tube upper
It is inserted with air injection pipe in port, between the inwall of the outer wall of described air injection pipe and described oil fuel tube, be provided with rubber sleeve, described gas injection
The lower port of pipe is provided with female thread and is connected with mushroom head screw, and described mushroom head screw is provided with through hole along own axes, described
The lower surface of rubber sleeve is resisted against on the flange of described mushroom head screw, and the upper end of described air injection pipe is provided with and can make described rubber
The expansion mechanism of set swelling；The through hole lower end of described mushroom head screw is provided with female thread and is connected with push pipe, described push pipe and institute
State oil fuel tube coaxial line and the lower end of push pipe pushes described gear throttle lid open.
2. fuel tank according to claim 1 detect air inlet leak-proof device under water it is characterised in that：Described expansion mechanism bag
Include cylinder sleeve and inner disc, the upper end open of described cylinder sleeve, the lower port of described cylinder sleeve is closed by cylinder sleeve base plate, the lower end of described inner disc
In described cylinder sleeve, the lower outer circumferential of described inner disc passes through the inwall realization sealing of large sealing packing ring and described cylinder sleeve；Described
It is provided with locking air cavity between the lower surface of inner disc and described cylinder sleeve base plate；The upper surface of described rubber sleeve is resisted against described cylinder sleeve bottom
The lower section of plate, the center of described cylinder sleeve base plate is provided with bottom center hole, and the upper end of described air injection pipe passes through described bottom center hole
It is connected as a single entity with the lower surface center of described inner disc, the inwall of described bottom center hole passes through small sealing ring with described air injection pipe in fact
Now seal；The longitudinal section of described inner disc is in I-shaped, and the upper port inwall of described cylinder sleeve is embedded with spacing jump ring, described limiting card
Spring is located at the middle necking section of described inner disc, and the top of described inner disc exceeds described cylinder sleeve；Described inner disc is vertically provided with oil
Case air inlet port and cylinder body air inlet port, the lower end of described fuel tank air inlet port is communicated with the centre bore of described air injection pipe, described
The upper end of fuel tank air inlet port is connected with gas-tpe fitting one；The lower end of described cylinder body air inlet port is communicated with described locking air cavity,
The upper end of described cylinder body air inlet port is connected with gas-tpe fitting two.
3. fuel tank according to claim 2 detect air inlet leak-proof device under water it is characterised in that：The top of described inner disc
Cover above described cylinder sleeve, the circumference of the upper port of described cylinder sleeve is evenly distributed with multiple cylinder sleeve screw holes, each cylinder sleeve
Screw hole extends and cylinder sleeve base plate described in difference insertion separately down, and the bottom of each described cylinder sleeve screw hole is connected with gib head respectively
Lower draw-bar screw upwards；The outer rim at described inner disc top is distributed with the one-to-one inner disc screw with described cylinder sleeve screw hole
Hole, is connected with the downward upper hook screw of gib head respectively in each described inner disc screw hole, the top of each cylinder sleeve screw hole sets respectively
There is extension spring, the lower end of each extension spring is hooked on corresponding lower draw-bar screw respectively, and the upper end of each extension spring is stretched out outside cylinder sleeve screw hole respectively
And be hooked in respectively and go up accordingly on hook screw.
4. fuel tank according to claim 3 detect air inlet leak-proof device under water it is characterised in that：Described cylinder sleeve screw hole
And described inner disc screw hole be provided with six to or eight right.
5. fuel tank according to claim 2 detect air inlet leak-proof device under water it is characterised in that：The lower end of described inner disc
Height identical boss is symmetrically distributed with face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410752577.8A CN104483069B (en) | 2014-12-11 | 2014-12-11 | Underwater detection air inlet leakage-preventing device of fuel oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410752577.8A CN104483069B (en) | 2014-12-11 | 2014-12-11 | Underwater detection air inlet leakage-preventing device of fuel oil tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104483069A CN104483069A (en) | 2015-04-01 |
| CN104483069B true CN104483069B (en) | 2017-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410752577.8A Active CN104483069B (en) | 2014-12-11 | 2014-12-11 | Underwater detection air inlet leakage-preventing device of fuel oil tank |
Country Status (1)
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| CN (1) | CN104483069B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595959A (en) * | 2016-11-15 | 2017-04-26 | 北京航星机器制造有限公司 | Device and method for airtight test and fuel filling of fuel tank through charging valve |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100350A (en) * | 1993-09-17 | 1995-03-22 | 中国石化上海金山实业公司 | Double-acting elastic tube expander and oil press for hydraulic elastic tube expander |
| CN2247067Y (en) * | 1995-06-09 | 1997-02-12 | 柳光坤 | Force changeable pipe expander |
| CN2288794Y (en) * | 1996-06-28 | 1998-08-26 | 柳光坤 | Variable force tube expander |
| CN201306577Y (en) * | 2008-10-13 | 2009-09-09 | 中国石油天然气集团公司 | Intelligent tube occlusion device |
| CN201448297U (en) * | 2009-04-28 | 2010-05-05 | 扬州柳工建设机械有限公司 | Oil outlet plugging device of hydraulic oil tank of concrete delivery pump |
| US8408047B2 (en) * | 2009-06-30 | 2013-04-02 | Star Envirotech, Inc. | Universal adapter for a fuel tank filler neck to test a fuel tank for lakes |
| US9086040B2 (en) * | 2012-10-17 | 2015-07-21 | Ford Global Technologies, Llc | Fuel system degradation test using two fuel tanks |
| CN203745155U (en) * | 2014-03-19 | 2014-07-30 | 四川诚德机械有限公司 | Fuel tank comprehensive leakage detection platform |
| CN203843029U (en) * | 2014-04-28 | 2014-09-24 | 上海通华不锈钢压力容器工程有限公司 | Hydraulic power pipe expander |
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2014
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Effective date of registration: 20221123 Address after: 401321 No. 5701, West Dajiang Road, Yudong, Banan District, Chongqing Patentee after: CHONGQING DAJIANG YAPU AUTO PARTS CO.,LTD. Address before: 225009 No. 508 Jiangnan Road, Yangzhou, Jiangsu Patentee before: YAPP AUTOMOTIVE PARTS Co.,Ltd. |
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