CN204359501U - Measure the device of fuel tank O-ring seal leak pressure - Google Patents
Measure the device of fuel tank O-ring seal leak pressure Download PDFInfo
- Publication number
- CN204359501U CN204359501U CN201420804038.XU CN201420804038U CN204359501U CN 204359501 U CN204359501 U CN 204359501U CN 201420804038 U CN201420804038 U CN 201420804038U CN 204359501 U CN204359501 U CN 204359501U
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- upper press
- fuel tank
- cover
- ring seal
- press cover
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Abstract
The utility model relates to a kind of device measuring fuel tank O-ring seal leak pressure, comprise openend upper press cover in opposite directions and lower cover, upper press cover is pressed in the top of lower cover and the lower surface of upper press cover is provided with flange collar, flange collar is inserted in downwards in the inner chamber of lower cover, sealing is realized by fuel tank O-ring seal between upper press cover and lower cover, upper press cover is provided with injecting hole, injecting hole is connected with gas injection joint, lower cover is fixed in gantry base, the upper end of gantry base is connected with crossbeam, the middle part of crossbeam is connected with screw rod, the lower end of screw rod is provided with bulb, bulb is pressed in the center, upper surface of upper press cover, the upper port of lower cover is symmetrically distributed with dowel hole, guide pin bushing is separately installed with in dowel hole, the guide pillar that can move up and down along guide pin bushing is plugged with respectively in guide pin bushing, the upper end of each guide pillar to be plugged on respectively in the guide pillar hole of upper press cover and to be fixed on upper press cover by guide pillar screw.This device ensure that fuel tank O-ring seal uniform force, improves the accuracy of test figure.
Description
Technical field
The utility model relates to a kind of device measuring fuel tank O-ring seal leak pressure, belongs to fuel tank proving installation technical field.
Background technology
In fuel tank, fuel pump is installed, realizes sealing by fuel tank O-ring seal between fuel pump flange and the mounting hole of fuel tank.Fuel tank O-ring seal is elastomeric material, and elasticity can be deteriorated at low ambient temperatures, and part loses recovery capacity, causes sealing property to decline, therefore judges that fuel tank O-ring seal sealing property is at low ambient temperatures particularly important.
The device of existing measurement fuel tank O-ring seal leak pressure comprises openend upper press cover in opposite directions and lower cover, upper press cover is pressed in the top of lower cover and the lower surface of upper press cover is provided with flange collar, flange collar is inserted in downwards in the inner chamber of lower cover, sealing is realized by fuel tank O-ring seal between upper press cover and lower cover, upper press cover is connected with gas injection joint, lower cover is fixed in gantry base, the upper end of gantry base is connected with crossbeam, the middle part of crossbeam is connected with screw rod, the lower end of screw rod is provided with bulb, and bulb is pressed in the center, upper surface of upper press cover.
Upper press cover and lower cover simulate the installment state of fuel tank O-ring seal on fuel tank, along with the rotation of screw rod, progressively depressed by upper press cover, fuel tank O-ring seal is progressively compacted, adopt the distance between lower cover on vernier caliper measurement, the decrement of record fuel tank O-ring seal.Then whole device places some hours at low ambient temperatures, and injecting compressed air in the cavity that is encircled into of cover plate, regulates compressed-air actuated pressure can find out the leak pressure of fuel tank O-ring seal under this decrement up and down.
There is following weak point in existing measurement mechanism: (1) when screw rod by upper press cover to when pressing down, upper press cover may occur and lower cover disalignment, and the trace skew of upper press cover can cause the discontinuity of fuel tank O-ring seal, affects the accuracy of test figure.(2) the decrement of fuel tank O-ring seal in each phase place may occur inconsistent, during test, often needs to measure the gap width between upper and lower cover plates in four phase places, then averages, and with vernier caliper measurement comparatively small―gap suture, operation inconvenience, error is larger.
Utility model content
The purpose of this utility model is, overcomes problems of the prior art, and provide a kind of device measuring fuel tank O-ring seal leak pressure, simple and reliable for structure, test findings is accurate.
For solving above technical matters, a kind of device measuring fuel tank O-ring seal leak pressure of the present utility model, comprise openend upper press cover in opposite directions and lower cover, described upper press cover is pressed in the top of described lower cover and the lower surface of upper press cover is provided with flange collar, described flange collar is inserted in the inner chamber of described lower cover downwards, sealing is realized by fuel tank O-ring seal between described upper press cover and described lower cover, described upper press cover is provided with injecting hole, described injecting hole is connected with gas injection joint, described lower cover is fixed in gantry base, the upper end of described gantry base is connected with crossbeam, the middle part of described crossbeam is connected with screw rod, the lower end of described screw rod is provided with bulb, described bulb is pressed in the center, upper surface of described upper press cover, the upper port of described lower cover is symmetrically distributed with dowel hole, guide pin bushing is separately installed with in described dowel hole, the guide pillar that can move up and down along guide pin bushing is plugged with respectively in described guide pin bushing, the upper end of each described guide pillar to be plugged on respectively in the guide pillar hole of upper press cover and to be fixed on described upper press cover by guide pillar screw.
Relative to prior art, the utility model achieves following beneficial effect: due to the cooperation of guide pillars and bushes, upper press cover can only move up and down along the axis total with lower cover, there will not be the skew of upper press cover, ensure that fuel tank O-ring seal is in whole uniform force circumferentially, improves the accuracy of test figure.
The lower end of described fuel tank O-ring seal is provided with the Y shape lip limit that Open Side Down, described Y shape lip limit is between the excircle and the inner peripheral wall of described lower cover of described upper press cover flange collar, the upper end of described fuel tank O-ring seal is provided with the flange of outwards turnover, and described flange is crushed between the lower surface of described upper press cover and the upper surface of described lower cover.In the cavity be encircled into upper press cover and lower cover by gas injection joint after injecting compressed air, Y shape lip limit is opened and is adjacent on the excircle of upper press cover flange collar and the inner peripheral wall of lower cover under gas pressure, realizes sealing circumferentially between the two; The flange of fuel tank O-ring seal upper end realizes the sealing between upper press cover and lower cover end face.
As improvement of the present utility model, between the lower surface of described upper press cover and the upper surface of described lower cover, be arranged with the identical catch of thickness.Prepare the catch organizing respective thickness according to the decrement that fuel tank O-ring seal needs more, upper press cover and lower cover padded the identical catch of thickness in opposite directions between end face after, as long as rotating screw bolt makes upper press cover push down catch and namely achieves predetermined decrement, very accurately quick, reduce measuring error, and ensure that fuel tank O-ring seal is consistent in decrement circumferentially.
As further improvement of the utility model, described guide pillars and bushes evenly and be arranged with four right.
As further improvement of the utility model, described lower cover is welded in described gantry base.
As further improvement of the utility model, the top of described screw rod is connected with butterfly handle.Turning butterfly handle can rotating screw bolt easily.
As further improvement of the utility model, the bottom welding of described lower cover has leg.
Accompanying drawing explanation
Be described in further detail the utility model below in conjunction with the drawings and specific embodiments, accompanying drawing only provides reference and explanation use, is not used to limit the utility model.
Fig. 1 is the front view that the utility model measures the device of fuel tank O-ring seal leak pressure.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the cut-open view along A-A in Fig. 3.
Fig. 5 is the enlarged drawing at B position in Fig. 3.
Fig. 6 is the enlarged drawing at C position in Fig. 4.
In figure: 1. gantry base; 2. crossbeam; 3. screw rod; 3a. bulb; 3b. butterfly handle; 4. upper press cover; 4a. flange collar; 4b. injecting hole; 5. lower cover; 6. fuel tank O-ring seal; 7. guide pin bushing; 8. guide pillar; 9. guide pillar screw; 10. catch; 11. legs.
Embodiment
As shown in Figures 1 to 6, the device that the utility model measures fuel tank O-ring seal leak pressure comprises openend upper press cover 4 in opposite directions and lower cover 5, upper press cover 4 is pressed in the top of lower cover 5 and the lower surface of upper press cover 4 is provided with flange collar 4a, flange collar 4a is inserted in the inner chamber of lower cover 5 downwards, sealing is realized by fuel tank O-ring seal 6 between upper press cover 4 and lower cover 5, upper press cover 4 is provided with injecting hole 4b, injecting hole 4b is connected with gas injection joint, lower cover 5 is fixed in gantry base 1, can lower cover 5 be directly welded in gantry base 1, the bottom welding of lower cover 5 has leg 11, be convenient to support on the ground.The upper end of gantry base 1 is connected with crossbeam 2, and the middle part of crossbeam 2 is connected with screw rod 3, and the top of screw rod 3 is connected with butterfly handle 3b, and turning butterfly handle 3b can rotating screw bolt 3 easily.The lower end of screw rod 3 is provided with bulb 3a, bulb 3a is pressed in the center, upper surface of upper press cover 4, the upper port of lower cover 5 is symmetrically distributed with dowel hole, guide pin bushing 7 is separately installed with in dowel hole, be plugged with the guide pillar 8 that can move up and down along guide pin bushing 7 in guide pin bushing 7 respectively, the upper end of each guide pillar 8 to be plugged on respectively in the guide pillar hole of upper press cover 4 and to be fixed on upper press cover 4 by guide pillar screw 9.Guide pillar 8 and guide pin bushing 7 can evenly and be arranged with four right.
The lower end of fuel tank O-ring seal 6 is provided with the Y shape lip limit that Open Side Down, Y shape lip limit is between the excircle and the inner peripheral wall of lower cover 5 of flange collar 4a, the upper end of fuel tank O-ring seal 6 is provided with the flange of outwards turnover, and flange is crushed between the lower surface of upper press cover 4 and the upper surface of lower cover 5.
In the cavity be encircled into upper press cover 4 and lower cover 5 by gas injection joint after injecting compressed air, Y shape lip limit is opened and is adjacent on the excircle of flange collar 4a and the inner peripheral wall of lower cover 5 under gas pressure, realizes sealing circumferentially between the two; The flange of fuel tank O-ring seal 6 upper end realizes the sealing between upper press cover 4 and lower cover 5 end face.Due to the cooperation of guide pillar 8 and guide pin bushing 7, upper press cover 4 can only move up and down along the axis total with lower cover 5, there will not be the skew of upper press cover 4, ensure that fuel tank O-ring seal 6 is in whole uniform force circumferentially, improves the accuracy of test figure.
The identical catch of thickness 10 is arranged with between the lower surface of upper press cover 4 and the upper surface of lower cover 5.Prepare the catch 10 organizing respective thickness according to the decrement that fuel tank O-ring seal 6 needs more, upper press cover 4 and lower cover 5 padded the identical catch of thickness 10 in opposite directions between end face after, as long as rotating screw bolt 3 makes upper press cover 4 push down catch 10 and namely achieves predetermined decrement, very accurately quick, reduce measuring error, and ensure that fuel tank O-ring seal 6 is consistent in decrement circumferentially.
These are only the better possible embodiments of the utility model, non-ly therefore limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (7)
1. measure the device of fuel tank O-ring seal leak pressure for one kind, comprise openend upper press cover in opposite directions and lower cover, described upper press cover is pressed in the top of described lower cover and the lower surface of upper press cover is provided with flange collar, described flange collar is inserted in the inner chamber of described lower cover downwards, sealing is realized by fuel tank O-ring seal between described upper press cover and described lower cover, described upper press cover is provided with injecting hole, described injecting hole is connected with gas injection joint, described lower cover is fixed in gantry base, the upper end of described gantry base is connected with crossbeam, the middle part of described crossbeam is connected with screw rod, the lower end of described screw rod is provided with bulb, described bulb is pressed in the center, upper surface of described upper press cover, it is characterized in that: the upper port of described lower cover is symmetrically distributed with dowel hole, guide pin bushing is separately installed with in described dowel hole, the guide pillar that can move up and down along guide pin bushing is plugged with respectively in described guide pin bushing, the upper end of each described guide pillar to be plugged on respectively in the guide pillar hole of upper press cover and to be fixed on described upper press cover by guide pillar screw.
2. the device of measurement fuel tank O-ring seal leak pressure according to claim 1, it is characterized in that: the lower end of described fuel tank O-ring seal is provided with the Y shape lip limit that Open Side Down, described Y shape lip limit is between the excircle and the inner peripheral wall of described lower cover of described upper press cover flange collar, the upper end of described fuel tank O-ring seal is provided with the flange of outwards turnover, and described flange is crushed between the lower surface of described upper press cover and the upper surface of described lower cover.
3. the device of measurement fuel tank O-ring seal leak pressure according to claim 1, is characterized in that: be arranged with the identical catch of thickness between the lower surface of described upper press cover and the upper surface of described lower cover.
4. the device of measurement fuel tank O-ring seal leak pressure according to claim 1, is characterized in that: described guide pillars and bushes evenly and be arranged with four right.
5. the device of measurement fuel tank O-ring seal leak pressure according to claim 1, is characterized in that: described lower cover is welded in described gantry base.
6. the device of measurement fuel tank O-ring seal leak pressure according to claim 1, is characterized in that: the top of described screw rod is connected with butterfly handle.
7. the device of measurement fuel tank O-ring seal leak pressure according to any one of claim 1 to 6, is characterized in that: the bottom welding of described lower cover has leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420804038.XU CN204359501U (en) | 2014-12-18 | 2014-12-18 | Measure the device of fuel tank O-ring seal leak pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420804038.XU CN204359501U (en) | 2014-12-18 | 2014-12-18 | Measure the device of fuel tank O-ring seal leak pressure |
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| Publication Number | Publication Date |
|---|---|
| CN204359501U true CN204359501U (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420804038.XU Active CN204359501U (en) | 2014-12-18 | 2014-12-18 | Measure the device of fuel tank O-ring seal leak pressure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111189588A (en) * | 2019-12-31 | 2020-05-22 | 无为县金顺机动车检测有限公司 | Sealing detection equipment for automobile oil tank sealing ring |
| CN114486088A (en) * | 2022-04-02 | 2022-05-13 | 成都凯天电子股份有限公司 | Adjustable portable airtight detection device |
| CN117249943A (en) * | 2023-11-16 | 2023-12-19 | 中汽研汽车检验中心（天津）有限公司 | Penetration resistance test device and method for oil pump sealing ring |
-
2014
- 2014-12-18 CN CN201420804038.XU patent/CN204359501U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111189588A (en) * | 2019-12-31 | 2020-05-22 | 无为县金顺机动车检测有限公司 | Sealing detection equipment for automobile oil tank sealing ring |
| CN114486088A (en) * | 2022-04-02 | 2022-05-13 | 成都凯天电子股份有限公司 | Adjustable portable airtight detection device |
| CN117249943A (en) * | 2023-11-16 | 2023-12-19 | 中汽研汽车检验中心（天津）有限公司 | Penetration resistance test device and method for oil pump sealing ring |
| CN117249943B (en) * | 2023-11-16 | 2024-03-22 | 中汽研汽车检验中心（天津）有限公司 | Penetration resistance test device and method for oil pump sealing ring |
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| GR01 | Patent grant |