CN115751155A - Variable internal volume accumulation chamber for tracer gas accumulation leak detection system - Google Patents
Variable internal volume accumulation chamber for tracer gas accumulation leak detection system Download PDFInfo
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- CN115751155A CN115751155A CN202211465119.7A CN202211465119A CN115751155A CN 115751155 A CN115751155 A CN 115751155A CN 202211465119 A CN202211465119 A CN 202211465119A CN 115751155 A CN115751155 A CN 115751155A
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- frame base
- upper cover
- convex edge
- bolt
- inflatable sealing
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- 238000009825 accumulation Methods 0.000 title claims abstract description 66
- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 239000000700 radioactive tracer Substances 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 58
- 238000000034 method Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000001186 cumulative effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
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Abstract
The invention discloses an accumulation cavity with variable internal volume for a tracer gas accumulation method leak detection system, which comprises an upper cover, a frame base and an inflatable sealing pipe, wherein a circle of first convex edge extending downwards is arranged on the periphery of the upper cover, a circle of second convex edge extending upwards is arranged on the periphery of the frame base, the first convex edge on the upper cover is sleeved on the second convex edge on the frame base, the inflatable sealing pipe is accommodated between the inner wall of the first convex edge and the outer wall of the second convex edge, and the upper cover is detachably connected with the frame base. The accumulation cavity can adjust the internal volume of the accumulation cavity through simple operation, not only greatly enhances the compatibility of the products to be detected with different sizes, but also can ensure the net volume as small as possible and realize rapid detection.
Description
Technical Field
The invention relates to a variable internal volume accumulation chamber for a tracer gas accumulation leak detection system.
Background
In the trace gas accumulation method leak detection system, an accumulation cavity sealed at normal pressure is needed, all trace gas leaked out from a detected product is collected in the cavity, and leakage parameters (leak rate) of the detected product are judged through sampling and value taking of a leak detector.
The net cumulative cavity volume (the cumulative cavity volume minus the volume occupied by the product to be tested) determines the length of the testing time, and therefore, the cumulative cavity volume is required to be as small as possible for the purpose of improving the testing efficiency. However, since a manufacturer usually has more than one product, and such a detection device must have compatibility with multiple products (different sizes), there is a contradiction that the compatibility requires the inner volume of the accumulation chamber to be as large as possible, and the high detection efficiency requires the inner volume of the accumulation chamber to be as small as possible.
Therefore, a new requirement for products emerges, and a cumulative cavity capable of conveniently adjusting the internal volume is urgently needed.
Disclosure of Invention
The invention provides an accumulation cavity with variable internal volume for a tracer gas accumulation method leak detection system, which comprises an upper cover, a frame base and an inflatable sealing tube,
the periphery of the upper cover is provided with a circle of first convex edge extending downwards,
a circle of second convex edge extending upwards is arranged on the periphery of the frame base,
the first convex edge on the upper cover is sleeved on the second convex edge on the frame base, the inflatable sealing pipe is accommodated between the inner wall of the first convex edge and the outer wall of the second convex edge,
the upper cover is detachably connected with the frame base.
According to the accumulation cavity, the space between the upper cover and the frame base surrounding wall is used for collecting tracer gas leaked from a tested product, when the inner volume of the accumulation cavity needs to be changed, the inflatable sealing tube is evacuated, so that a gap is generated between the first convex edge on the upper cover and the second convex edge on the frame base, then the relative position between the upper cover and the frame base in the vertical direction is adjusted, the overall height of the accumulation cavity is changed, the inner volume of the accumulation cavity is changed, the inflatable sealing tube is inflated again after the adjustment is completed, the inflatable sealing tube expands during inflation, the sealing between the first convex edge on the upper cover and the second convex edge on the frame base is realized, the inner volume of the accumulation cavity can be adjusted through simple operation, the compatibility of tested products with different sizes is greatly enhanced, the smallest possible net volume can be ensured, and quick detection is realized.
Further, the inflatable sealing pipes are arranged on the inner wall of the first convex edge and distributed along the circumferential direction of the inner wall of the first convex edge.
Therefore, the inflatable sealing pipes distributed along the circumferential direction of the inner wall of the first flange can ensure the sealing performance between the first flange on the upper cover and the second flange on the frame base.
Furthermore, the number of the inflatable sealing pipes is two or more, and the two or more inflatable sealing pipes are sequentially arranged along the extending direction of the first convex edge.
Therefore, two or more inflatable sealing tubes can further ensure the tightness of the accumulation cavity when the leak detector samples and takes values.
Further, the inflation opening of the inflatable sealing tube is arranged on the outer wall of the first convex edge.
Therefore, the inflation port is arranged on the outer wall of the first convex edge to facilitate the evacuation or inflation of the inflatable sealing tube.
Further, the shape of the first convex edge is matched with the shape of the second convex edge.
Therefore, the shape-adaptive first flange and second flange can ensure the tightness of the accumulation cavity of the upper cover and the frame base peripheral wall.
Furthermore, at least one first fan is arranged on the inner wall of the top of the upper cover.
Thus, the first fan can mix the gas in the space between the top of the cover and the surrounding wall of the first flange uniformly without significant circulation.
Furthermore, the number of the first fans is multiple, and the multiple first fans are uniformly distributed.
Therefore, the uniformly distributed first fans can ensure that the gas in the space between the top of the upper cover and the first convex side surrounding wall is uniformly mixed and does not obviously circulate.
Furthermore, at least one second fan is arranged on the inner wall of the second convex edge.
Thus, the second fan can mix the air in the space of the frame base surrounding wall uniformly without obvious circulation.
Furthermore, the periphery of the upper cover is provided with a first wide edge extending outwards, the periphery of the frame base is provided with a second wide edge extending outwards, and the first wide edge is connected with the second wide edge through bolts and nuts.
Therefore, when the inner volume of the accumulation cavity needs to be changed, the inflatable sealing tube is evacuated, a gap is generated between the first convex edge on the upper cover and the second convex edge on the frame base, then the bolt is adjusted, the relative position between the upper cover and the frame base in the vertical direction is changed, the overall height of the accumulation cavity is changed, the inner volume of the accumulation cavity is changed, after the adjustment of the inner volume of the accumulation cavity is completed, the inflatable sealing tube is inflated again, the inflatable sealing tube expands during inflation, the sealing between the first convex edge on the upper cover and the second convex edge on the frame base is realized, and the inner volume of the accumulation cavity can be adjusted by simply operating the bolt and the nut.
Furthermore, a first wide edge extending outwards is arranged on the periphery of the upper cover, a second wide edge extending outwards is arranged on the periphery of the frame base, a through hole is formed in the first wide edge, a nut is arranged at a port of the through hole, a bolt seat and a bolt are arranged on the second wide edge, the free end of the bolt penetrates through the top of the bolt seat, the bolt can freely rotate on the bolt seat, the head end of the bolt is accommodated in the bolt seat, and the free end of the bolt is screwed in the nut.
Therefore, when the inner volume of the accumulation cavity needs to be changed, the inflatable sealing tube is evacuated, a gap is generated between the first convex edge on the upper cover and the second convex edge on the frame base, then the nut is turned, the relative position between the upper cover and the frame base in the vertical direction is changed, the overall height of the accumulation cavity is changed, the inner volume of the accumulation cavity is changed, after the adjustment of the inner volume of the accumulation cavity is completed, the inflatable sealing tube is inflated again, the inflatable sealing tube expands during inflation, the sealing between the first convex edge on the upper cover and the second convex edge on the frame base is realized, the inner volume of the accumulation cavity can be adjusted through the simple turning of the nut, and the device is very convenient.
Drawings
FIG. 1 is a schematic diagram of a variable internal volume accumulation chamber for a tracer gas accumulation leak detection system according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the upper cover in the accumulation chamber shown in FIG. 1;
FIG. 3 is a schematic view of the structure of the frame base of the accumulation chamber shown in FIG. 1;
FIG. 4 isbase:Sub>A cross-sectional view of the accumulation chamber shown in FIG. 1 taken along the direction A-A;
FIG. 5 is a cross-sectional view of the upper cover shown in FIG. 2 taken along the direction B-B;
fig. 6 is a sectional view of the frame base shown in fig. 3 taken along the direction C-C.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. In the description of the present invention, "a plurality" means two or more unless otherwise specified; it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, a fixed connection, a removable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through intervening media, and a communication between two elements.
Referring to fig. 1 to 6, the variable internal volume accumulation chamber for a tracer gas accumulation leak detection system includes an upper cover 1, a frame base 2, and an inflatable sealing tube 3.
Referring to fig. 2 and 5, a circle of first convex edge 11 is integrally formed on the periphery of the upper lid 1, and referring to fig. 5, the periphery of the upper lid 1 extends downward to form the first convex edge 11.
Referring to fig. 5, the cross section of the first flange 11 may be a square frame (shown in fig. 2), and the upper lid 1 may be made of a metal material, such as aluminum, iron, copper, alloy, or stainless steel.
Referring to fig. 3 and 6, a circle of second flange 21 is integrally formed on the periphery of the frame base 2, and referring to fig. 6, the periphery of the frame base 2 extends upward to form the second flange 21.
Referring to fig. 3, the frame base 2 is shaped like a frame, and referring to fig. 6, the frame base 2 is opened at both the top and bottom thereof.
Referring to fig. 6, the cross section of the second flange 21 may be a square frame (shown in fig. 3), and the frame base 2 may be made of metal, such as aluminum, iron, copper, alloy, or stainless steel.
Referring to fig. 1 and 4, the shape of the first flange 11 is adapted to the shape of the second flange 21, and the shape of the first flange 11 and the second flange 21 can ensure the sealing performance of the accumulation cavity of the peripheral wall of the top cover 1 and the frame base 2.
Referring to fig. 4, the space between the top lid 1 and the surrounding wall of the frame base 2 is formed for collecting trace gases leaking from the tested product.
Referring to fig. 2 and 5, in the present embodiment, the inflatable sealing tube 3 is fixed (e.g. adhered) on the inner wall of the first flange 11, the inflatable sealing tube 3 is distributed along the circumference of the inner wall of the first flange 11, and the size of the second flange 21 (the length and width of the second flange 21 in fig. 3) is smaller than the size of the first flange 11 (the length and width of the first flange 11 in fig. 2), so as to ensure that the second flange 21 can be nested in the first flange 11 and a gap for accommodating the inflatable sealing tube 3 is left between the outer wall of the second flange 21 and the inner wall of the first flange 11. In other embodiments, the inflatable sealing tube 3 may also be fixed on the outer wall of the second flange 21, the inflatable sealing tube 3 is distributed along the circumference of the outer wall of the second flange 21, the size of the second flange 21 (the length and the width of the second flange 21 in fig. 3) is smaller than the size of the first flange 11 (the length and the width of the first flange 11 in fig. 2), so as to ensure that the second flange 21 can be nested in the first flange 11 and a gap for accommodating the inflatable sealing tube 3 is left between the outer wall of the second flange 21 and the inner wall of the first flange 11.
The inflatable sealing tube 3 may be made of silicone, when the gas (air) in the inflatable sealing tube 3 is evacuated, the inflatable sealing tube 3 becomes deflated, and when the gas (air) is filled into the inflatable sealing tube 3, the inflatable sealing tube 3 may be inflated to seal between the first flange 11 on the upper cover 1 and the second flange 21 on the frame base 2.
Referring to fig. 5, the number of the inflatable sealing tubes 3 is at least one, preferably two or more, and two or more inflatable sealing tubes 3 may be arranged in sequence along the extending direction of the first flange 11 (the direction from the top to the bottom in fig. 5), and two or more inflatable sealing tubes 3 may further ensure the tightness of the accumulation cavity during sampling and sampling by the leak detector. In this embodiment, the number of the inflatable sealing tubes 3 is three, and the three inflatable sealing tubes 3 are sequentially arranged along the extending direction of the first flange 11 (the direction from the top to the bottom in fig. 5).
In this embodiment, the inflation port of the inflatable sealing tube 3 may be provided on the outer wall of the first flange 11, so that the evacuation or inflation of the inflatable sealing tube 3 can be facilitated.
Referring to fig. 2 and 5, at least one first fan 12 is installed on the inner wall of the top of the upper cover 1, and the first fan 12 can make the top of the upper cover 1 and the air in the space of the surrounding wall of the first flange 11 uniformly mixed without significant circulation. In this embodiment, the number of the first fans 12 is ten, ten first fans 12 are uniformly distributed on the inner wall of the top of the upper cover 1, and the ten first fans 12 uniformly distributed can ensure that the gas in the space between the top of the upper cover 1 and the surrounding wall of the first flange 11 is uniformly mixed and does not have a significant circulation.
Referring to fig. 3 and 6, at least one second fan 22 is installed on the inner wall of the second collar 21, and the second fan 22 can uniformly mix the air in the space of the peripheral wall of the frame base 2 without a significant circulation. In the present embodiment, the number of the second fans 22 is eighteen, the eighteen second fans 22 are uniformly distributed along the inner wall of the second flange 21, and the eighteen second fans 22 can not only uniformly mix the air in the space of the surrounding wall of the frame base 2, but also have no obvious circulation.
The upper cover 1 and the frame base 2 are detachably connected. Specifically, the method comprises the following steps: referring to fig. 2 and 5, a circle of first wide edge 13 is integrally formed on the periphery of the upper cover 1, and the periphery of the upper cover 1 extends outwards to form the first wide edge 13, referring to fig. 3 and 6, a second wide edge 23 is integrally formed on the periphery of the frame base 2, and the periphery of the frame base 2 extends outwards to form the second wide edge 23, and the first wide edge 13 and the second wide edge 23 have the same width; a through hole 131 is formed in the first wide side 13, a bolt seat 231 is installed at a corresponding position on the second wide side 23, referring to fig. 6, a free end of a bolt 232 passes through the top of the bolt seat 231, a head end of the bolt 232 is accommodated in the bolt seat 231, the bolt 232 can freely rotate on the bolt seat 231, after the free end of the bolt 232 passes through the through hole 131 on the upper cover 1, a nut 132 is screwed on the bolt 232 (in a state shown in fig. 4), so that the upper cover 1 and the frame base 2 can be combined into a whole accumulation cavity 100 (shown in fig. 4); referring to fig. 4, when the internal volume of the accumulation cavity 100 needs to be changed, the inflatable sealing tube 3 is evacuated to form a gap between the first flange 11 of the upper cover 1 and the second flange 21 of the frame base 2, and then the nut 132 is turned to change the relative position between the upper cover 1 and the frame base 2 in the vertical direction, so as to change the overall height of the accumulation cavity 100, thereby changing the internal volume of the accumulation cavity 100, and when the adjustment of the internal volume of the accumulation cavity 100 is completed, the inflatable sealing tube 3 is inflated again, and the inflatable sealing tube 3 expands during inflation, so as to realize the sealing between the first flange 11 of the upper cover 1 and the second flange 21 of the frame base 2, and the internal volume of the accumulation cavity 100 can be adjusted by simply turning the nut 132, which is very convenient.
Referring to fig. 2, the number of the through holes 131 on the first wide side 13 is eight, three through holes 131 are uniformly distributed on a longer first wide side 13, three through holes 131 are uniformly distributed on another longer first wide side 13, one through hole 131 is distributed on a shorter first wide side 13, and one through hole 131 is distributed on another shorter first wide side 13, referring to fig. 3, the number of the bolt seats 231 on the second wide side 23 is eight, three bolt seats 231 are uniformly distributed on a longer second wide side 23, three bolt seats 231 are uniformly distributed on another longer second wide side 23, one bolt seat 231 is distributed on a shorter second wide side 23, one bolt seat 231 is distributed on another shorter second wide side 23, the number of the bolts 232 and the number of the nuts 132 are eight, and one nut 132 is screwed on the free end of each bolt 232; the upper cover 1 and the frame base 2 are integrated into a whole accumulation chamber 100 by eight bolts 232 and eight nuts 132, so that the upper cover 1 and the frame base 2 can be stably and evenly connected.
Referring to fig. 4, in the accumulation cavity 100 of the present invention, a space between the upper cover 1 and the surrounding wall of the frame base 2, i.e. the accumulation cavity 100, is formed for collecting trace gas leaked from a product to be tested, when the internal volume of the accumulation cavity 100 needs to be changed, the inflatable sealing tube 3 is evacuated to generate a gap between the first flange 11 of the upper cover 1 and the second flange 21 of the frame base 2, then eight nuts 132 are turned to change the relative position between the upper cover 1 and the frame base 2 in the vertical direction, and the overall height of the accumulation cavity 100 is changed, so as to change the internal volume of the accumulation cavity 100, when the adjustment of the internal volume of the accumulation cavity 100 is completed, the inflatable sealing tube 3 is inflated again, and the inflatable sealing tube 3 expands during inflation, so as to achieve the sealing between the first flange 11 of the upper cover 1 and the second flange 21 of the frame base 2.
The above description is only some embodiments of the present invention, and is intended to illustrate the technical means of the present invention, and not to limit the technical scope of the present invention. The invention is not limited to the embodiments shown in the drawings, but can be modified in various ways.
Claims (10)
1. A variable internal volume accumulation chamber for a tracer gas accumulation leak detection system, comprising an upper cover, a frame base and an inflatable sealing tube,
the periphery of the upper cover is provided with a circle of first convex edge extending downwards,
a circle of second convex edge extending upwards is arranged on the periphery of the frame base,
the first convex edge on the upper cover is sleeved on the second convex edge on the frame base, the inflatable sealing pipe is accommodated between the inner wall of the first convex edge and the outer wall of the second convex edge,
the upper cover is detachably connected with the frame base.
2. The accumulation chamber according to claim 1, wherein the inflatable sealing tubes are provided on and circumferentially distributed along the inner wall of the first collar.
3. The accumulation chamber as claimed in claim 2, wherein the number of said inflatable sealing tubes is two or more, the two or more inflatable sealing tubes being arranged in sequence along the extension direction of the first flange.
4. The accumulation chamber as claimed in claim 2, wherein the inflation port of the inflatable sealing tube is provided on the outer wall of the first flange.
5. The accumulation chamber of claim 1 wherein the shape of the first rim is adapted to the shape of the second rim.
6. The accumulation chamber of claim 1 wherein the top inner wall of the lid has at least one first fan disposed thereon.
7. The accumulation chamber body of claim 6, wherein the number of the first fans is plural, and the plural first fans are uniformly distributed.
8. The accumulation chamber as in claim 1, wherein the inner wall of the second flange is provided with at least one second fan.
9. The accumulation chamber body as claimed in any one of claims 1 to 8, wherein the periphery of the upper cover is provided with a first broad side extending outwardly, the periphery of the frame base is provided with a second broad side extending outwardly, and the first broad side and the second broad side are connected by a bolt and a nut.
10. The accumulation chamber as claimed in any one of claims 1 to 8, wherein the periphery of the upper cover is provided with a first broad side extending outwardly, the periphery of the frame base is provided with a second broad side extending outwardly, the first broad side is provided with a through hole, a port of the through hole is provided with a nut, the second broad side is provided with a bolt seat and a bolt, a free end of the bolt passes through the top of the bolt seat and the bolt can freely rotate on the bolt seat, a bolt head end of the bolt is accommodated in the bolt seat, and a free end of the bolt is screwed in the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211465119.7A CN115751155A (en) | 2022-11-22 | 2022-11-22 | Variable internal volume accumulation chamber for tracer gas accumulation leak detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211465119.7A CN115751155A (en) | 2022-11-22 | 2022-11-22 | Variable internal volume accumulation chamber for tracer gas accumulation leak detection system |
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| Publication Number | Publication Date |
|---|---|
| CN115751155A true CN115751155A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211465119.7A Pending CN115751155A (en) | 2022-11-22 | 2022-11-22 | Variable internal volume accumulation chamber for tracer gas accumulation leak detection system |
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| CN (1) | CN115751155A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8404093D0 (en) * | 1983-03-16 | 1984-03-21 | Airflex Containers Ltd | Inflatable tube seals |
| EP0264573A2 (en) * | 1986-09-24 | 1988-04-27 | The Firestone Tire & Rubber Company | Air spring having internal sealing band and method of installing same |
| FR2939067A1 (en) * | 2008-11-28 | 2010-06-04 | Idea Concept | BACKGROUND FOR CLOSING AT LEAST ONE OF THE ENDS OF A BODY OF TONNEAU AND TONNEAU EQUIPPED WITH SUCH A FOUNDATION |
| DE102009012213A1 (en) * | 2009-03-07 | 2010-09-09 | Inficon Gmbh | Test leak unit for evaluating results of tightness tests, has housing from which leakage determining outlet is guided for test gas, where housing has changing volume in which test gas is put under pressure by volume reduction |
| CN202432798U (en) * | 2011-12-22 | 2012-09-12 | 合肥荣事达三洋电器股份有限公司 | Refrigerator with sealing and thermal insulation functions |
| CN109780791A (en) * | 2018-12-28 | 2019-05-21 | 青岛海尔股份有限公司 | Refrigerator |
| CN212663059U (en) * | 2020-07-16 | 2021-03-09 | 郑合忠 | Building engineering environment-friendly dust collector |
| CN113514197A (en) * | 2021-07-01 | 2021-10-19 | 广舜检测技术（上海）有限公司 | Vehicle battery PACK package leakage detection system and detection method based on accumulative test |
| CN113959659A (en) * | 2021-10-22 | 2022-01-21 | 武汉斯优光电技术有限公司 | Low-gas consumption detection method for nitrogen pressure leak detector |
-
2022
- 2022-11-22 CN CN202211465119.7A patent/CN115751155A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8404093D0 (en) * | 1983-03-16 | 1984-03-21 | Airflex Containers Ltd | Inflatable tube seals |
| EP0264573A2 (en) * | 1986-09-24 | 1988-04-27 | The Firestone Tire & Rubber Company | Air spring having internal sealing band and method of installing same |
| FR2939067A1 (en) * | 2008-11-28 | 2010-06-04 | Idea Concept | BACKGROUND FOR CLOSING AT LEAST ONE OF THE ENDS OF A BODY OF TONNEAU AND TONNEAU EQUIPPED WITH SUCH A FOUNDATION |
| DE102009012213A1 (en) * | 2009-03-07 | 2010-09-09 | Inficon Gmbh | Test leak unit for evaluating results of tightness tests, has housing from which leakage determining outlet is guided for test gas, where housing has changing volume in which test gas is put under pressure by volume reduction |
| CN202432798U (en) * | 2011-12-22 | 2012-09-12 | 合肥荣事达三洋电器股份有限公司 | Refrigerator with sealing and thermal insulation functions |
| CN109780791A (en) * | 2018-12-28 | 2019-05-21 | 青岛海尔股份有限公司 | Refrigerator |
| CN212663059U (en) * | 2020-07-16 | 2021-03-09 | 郑合忠 | Building engineering environment-friendly dust collector |
| CN113514197A (en) * | 2021-07-01 | 2021-10-19 | 广舜检测技术（上海）有限公司 | Vehicle battery PACK package leakage detection system and detection method based on accumulative test |
| CN113959659A (en) * | 2021-10-22 | 2022-01-21 | 武汉斯优光电技术有限公司 | Low-gas consumption detection method for nitrogen pressure leak detector |
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