CN203643096U - Testing and sealing structure for discharging of hydrocarbon in plastic fuel tank - Google Patents
Testing and sealing structure for discharging of hydrocarbon in plastic fuel tank Download PDFInfo
- Publication number
- CN203643096U CN203643096U CN201320828769.3U CN201320828769U CN203643096U CN 203643096 U CN203643096 U CN 203643096U CN 201320828769 U CN201320828769 U CN 201320828769U CN 203643096 U CN203643096 U CN 203643096U
- Authority
- CN
- China
- Prior art keywords
- annular groove
- flange
- density polyethylene
- metal case
- polyethylene plate
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 22
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 21
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 21
- 239000002828 fuel tank Substances 0.000 title claims abstract description 18
- 229920003023 plastic Polymers 0.000 title claims abstract description 14
- 239000004033 plastic Substances 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 title abstract description 16
- 238000007599 discharging Methods 0.000 title abstract 2
- 239000002184 metal Substances 0.000 claims abstract description 54
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 33
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 33
- 238000010276 construction Methods 0.000 claims description 10
- 239000000295 fuel oil Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 description 4
- 239000003502 gasoline Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to a testing and sealing structure for the discharging of hydrocarbon in a plastic fuel tank. An upper port of a metal box body is provided with a flange with an edge outwardly rolling, the middle part of a high-density polyethylene plate is provided with a testing sample piece, the high-density polyethylene plate covers the flange of the metal box body, a metal cover plate is arranged on the high-density polyethylene plate in a pressing manner, the periphery of the flange is distributed with a plurality of bolts via which the metal cover plate, the high-density polyethylene plate and the metal box body are tightly connected, the upper end surface of the flange of the metal box body is provided with an inner sealing annular groove and an outer sealing annular groove extending along the inner circumference of the flange, the inner sealing annular groove and the outer sealing annular groove are respectively positioned at the inside and the outside of the circumference which the bolts belong to, an inner sealing ring and an outer sealing ring are respectively embedded in the inner sealing annular groove and the outer sealing annular groove, the middle part of the flange in the width direction is provided with an activated carbon annular groove formed by downward recession, the activated carbon annular groove is positioned between the inner sealing ring and the outer sealing ring, an inner cavity of the activated carbon annular groove is filled with activated carbon powder, and an outer rim of the high-density polyethylene plate is aligned with an inner wall of the activated carbon annular groove. The structure is advantaged by good sealing performance and reliable tested data.
Description
Technical field
The utility model relates to one, particularly a kind of plastic fuel tank hydrocarbon emission test hermetically-sealed construction.
Background technology
Gasoline leaves in plastic fuel tank, and due to the volatile characteristic of gasoline, the hydrocarbon molecules in gasoline can be penetrated in air by plastic fuel tank body, valve weld and oil pump assembling place.Car load has clear and definite requirement to the hydrocarbon emission of fuel tank, therefore needs on stream to detect the hydrocarbon emission numerical value of fuel tank.
Traditional method of testing has two kinds: the one, and in fuel tank, deposit a certain amount of gasoline and be placed on the measurement of carrying out hydrocarbon emission value in experimental machine.This method of testing can only be measured the hydrocarbon emission value of fuel tank entirety, once experiment measuring numerical value is greater than the numerical value of customer requirement, cannot know accurately that the discharge value of where (casing, valve weld, oil pump assembling place) is bigger than normal causes final experimental result bigger than normal.
The 2nd, casing, valve weld, oil pump assembling punishment are cut open respectively and is arranged on can and measures, experimental result is added the most at last, draws the hydrocarbon emission numerical value of system.The upper port of metal case is provided with the flange of outward flanging, high density polyethylene plate covers the upper port of metal case, the middle part of high density polyethylene plate is provided with test sample, the top of high density polyethylene plate is pressed with metal cover board, within one week, being distributed with many bolts along the flange of metal case is closely connected metal cover board, high density polyethylene plate with metal case, a bight of metal case is provided with exhaust nozzle back up pad, in exhaust nozzle back up pad, exhaust nozzle is installed.When test,, coat fluid sealant or sprinkle activated carbon powder at the position such as seam crossing, bolt hole place of flange and high density polyethylene plate to injecting test fuel oil in metal case by exhaust nozzle, wrap up with tinfoil paper; Can is placed in environmental cabinet, exhaust nozzle outlet is access to outside environmental cabinet by special joint, carries out test sample and deposits test, obtains its hydrocarbon emission value again.Still there is a certain amount of discharge value in this measuring method, affect the accuracy of experimental result between can flange and high density polyethylene plate.
Utility model content
The purpose of this utility model is, overcomes problems of the prior art, and a kind of plastic fuel tank hydrocarbon emission test hermetically-sealed construction is provided, and sealing property is better.
For solving above technical matters, a kind of plastic fuel tank hydrocarbon emission test hermetically-sealed construction of the present utility model, comprise the metal case that holds test fuel oil, the upper port of described metal case is provided with the flange of outward flanging, high density polyethylene plate covers the upper port of described metal case, the middle part of described high density polyethylene plate is provided with test sample, the top of described high density polyethylene plate is pressed with metal cover board, within one week, be distributed with many bolts by metal cover board along the flange of described metal case, high density polyethylene plate is closely connected with metal case, the flange upper surface of described metal case is provided with the inner seal ring groove extending along flange inside circumference, described inner seal ring groove is positioned at described bolt place and encircles all inner sides, in described inner seal ring groove, be embedded with inner seal ring.
With respect to prior art, the utility model has been obtained following beneficial effect: although high density polyethylene plate exists certain elasticity, between the flange of metal case and high density polyethylene plate, still there is the gap on microcosmic, the utility model is on the basis of conventional seals mode, the flange of metal case arrange with high density polyethylene plate together with inner seal ring, effectively improved sealing property between the two.
As improvement of the present utility model, the flange upper surface of described metal case is provided with the external seal annular groove extending along flange neighboring, and described external seal annular groove is positioned at described bolt place and encircles all outsides, in described external seal annular groove, is embedded with exterior seal ring.On the basis of inner seal ring, set up exterior seal ring one, can further improve sealing property.
As further improvement of the utility model, the middle part of the flange Width of described metal case is provided with the activated charcoal annular groove forming to lower recess, described activated charcoal annular groove is along the middle part ring Zhou Yanshen of described metal case flange, the lumen loading of described activated charcoal annular groove has activated carbon powder, and the outer rim of described high density polyethylene plate is concordant with the inwall of described activated charcoal annular groove.Between inner seal ring and exterior seal ring, set up activated charcoal annular groove, the micro-hydrocarbon substance leaking from the outer rim of high density polyethylene plate, by charcoal absorption, has reduced leakage rate more.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, accompanying drawing only provides reference and explanation use, non-in order to limit the utility model.
Fig. 1 is the stereographic map of the utility model plastic fuel tank hydrocarbon emission test hermetically-sealed construction.
Fig. 2 is the vertical view of the utility model plastic fuel tank hydrocarbon emission test hermetically-sealed construction.
Fig. 3 is the cut-open view along A-A in Fig. 2.
Fig. 4 is the explosive view of Fig. 1.
In figure: 1. metal case; 2. metal cover board; 3. test fuel oil; 4. high density polyethylene plate; 5. test sample; 6. bolt; 7. exhaust nozzle; 8. exhaust nozzle back up pad; 9. inner seal ring; 10. exterior seal ring; 11. activated charcoal annular grooves; 12. activated carbon powders.
Embodiment
As shown in Figures 1 to 4, plastic fuel tank hydrocarbon emission test hermetically-sealed construction of the present utility model, comprise the metal case 1 that holds test fuel oil, the upper port of metal case 1 is provided with the flange of outward flanging, high density polyethylene plate 4 covers the upper port of metal case, the middle part of high density polyethylene plate 4 is provided with test sample 5, the top of high density polyethylene plate 4 is pressed with metal cover board 2, within one week, is distributed with many bolts 6 metal cover board 2, high density polyethylene plate 4 and metal case 1 are closely connected along the flange of metal case 1.A bight of metal case 1 is provided with exhaust nozzle back up pad 8, and exhaust nozzle 7 is installed in exhaust nozzle back up pad 8.
The flange upper surface of metal case 1 is provided with the inner seal ring groove extending along flange inside circumference, and inner seal ring groove is positioned at bolt 6 places and encircles all inner sides, is embedded with inner seal ring 9 in inner seal ring groove.The flange upper surface of metal case 1 is also provided with the external seal annular groove extending along flange neighboring, and external seal annular groove is positioned at bolt 6 places and encircles all outsides, is embedded with exterior seal ring 10 in external seal annular groove.The middle part of the flange Width of metal case 1 is provided with the activated charcoal annular groove 11 forming to lower recess, activated charcoal annular groove 11 is along the middle part ring Zhou Yanshen of metal case flange, between inner seal ring 9 and exterior seal ring 10, the lumen loading of activated charcoal annular groove 11 has activated carbon powder 12, and the outer rim of high density polyethylene plate 4 is concordant with the inwall of activated charcoal annular groove 11.
When test, in metal case, inject test fuel oil 3 by exhaust nozzle 7, fluid sealant is coated at the position such as seam crossing, bolt hole place at flange and high density polyethylene plate, again can 1 is placed in environmental cabinet, the outlet of exhaust nozzle 7 is access to outside environmental cabinet by special joint, carries out test sample and deposits test.Hydrocarbon substance in metal case, in the process along high density polyethylene plate to external leakage, successively, through inner seal ring 9, activated charcoal annular groove 11 and the protection of exterior seal ring 10San road, realization, substantially without leaking, has improved the accuracy of test sample 5 hydrocarbon emission numerical value tests greatly.
The foregoing is 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.The utility model can pass through or adopt existing techniques in realizing without the technical characterictic of describing, and does not repeat them here.
Claims (3)
1. a plastic fuel tank hydrocarbon emission test hermetically-sealed construction, comprise the metal case that holds test fuel oil, the upper port of described metal case is provided with the flange of outward flanging, high density polyethylene plate covers the upper port of described metal case, the middle part of described high density polyethylene plate is provided with test sample, the top of described high density polyethylene plate is pressed with metal cover board, within one week, be distributed with many bolts by metal cover board along the flange of described metal case, high density polyethylene plate is closely connected with metal case, it is characterized in that: the flange upper surface of described metal case is provided with the inner seal ring groove extending along flange inside circumference, described inner seal ring groove is positioned at described bolt place and encircles all inner sides, in described inner seal ring groove, be embedded with inner seal ring.
2. plastic fuel tank hydrocarbon emission test hermetically-sealed construction according to claim 1, it is characterized in that: the flange upper surface of described metal case is provided with the external seal annular groove extending along flange neighboring, described external seal annular groove is positioned at described bolt place and encircles all outsides, in described external seal annular groove, is embedded with exterior seal ring.
3. plastic fuel tank hydrocarbon emission test hermetically-sealed construction according to claim 1 and 2, it is characterized in that: the middle part of the flange Width of described metal case is provided with the activated charcoal annular groove forming to lower recess, described activated charcoal annular groove is along the middle part ring Zhou Yanshen of described metal case flange, the lumen loading of described activated charcoal annular groove has activated carbon powder, and the outer rim of described high density polyethylene plate is concordant with the inwall of described activated charcoal annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320828769.3U CN203643096U (en) | 2013-12-16 | 2013-12-16 | Testing and sealing structure for discharging of hydrocarbon in plastic fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320828769.3U CN203643096U (en) | 2013-12-16 | 2013-12-16 | Testing and sealing structure for discharging of hydrocarbon in plastic fuel tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203643096U true CN203643096U (en) | 2014-06-11 |
Family
ID=50874331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320828769.3U Expired - Lifetime CN203643096U (en) | 2013-12-16 | 2013-12-16 | Testing and sealing structure for discharging of hydrocarbon in plastic fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203643096U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017902A (en) * | 2016-07-15 | 2016-10-12 | 亚普汽车部件股份有限公司 | Fuel tank hydrocarbon emission test assembly and test method |
-
2013
- 2013-12-16 CN CN201320828769.3U patent/CN203643096U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017902A (en) * | 2016-07-15 | 2016-10-12 | 亚普汽车部件股份有限公司 | Fuel tank hydrocarbon emission test assembly and test method |
| CN106017902B (en) * | 2016-07-15 | 2019-04-09 | 亚普汽车部件股份有限公司 | Fuel tank hydrocarbon emission test suite |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |