CN214893898U - Sealing test device for inner wall of composite material barrel - Google Patents
Sealing test device for inner wall of composite material barrel Download PDFInfo
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- CN214893898U CN214893898U CN202121319205.8U CN202121319205U CN214893898U CN 214893898 U CN214893898 U CN 214893898U CN 202121319205 U CN202121319205 U CN 202121319205U CN 214893898 U CN214893898 U CN 214893898U
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Abstract
The utility model discloses a composite material cylinder inner wall sealing test device, which comprises an upper sealing mould and a lower sealing mould which are arranged at two ends of a composite material cylinder; the upper sealing die comprises an upper outer flange and an upper inner flange which are connected through a plurality of bolts; through holes are formed between the upper outer flange and the upper inner flange, and the top of the upper outer flange is connected with an evacuation mechanism; the lower sealing die comprises a lower outer flange and a lower inner flange which are connected through a plurality of bolts; and outer sealing rings are arranged between the upper inner flange plate and the outer flange plate and between the lower inner flange plate and the outer flange plate. The utility model discloses an realize sealedly at barrel port inner wall tip, guarantee the leakproofness of barrel port, whether there is the leak source to leak hunting through helium mass spectrometer leak detector to the realization detects the gas tightness of combined material barrel inlayer, has realized under the intact state of outer combined material, detects multi-angle layer and inlayer combined material's gas tightness.
Description
Technical Field
The utility model belongs to the technical field of the vacuum, concretely relates to combined material barrel inner wall seal test device.
Background
The composite material is widely applied to engineering due to the advantages of high specific modulus, high specific strength, good designability and the like, wherein the composite material comprises a common composite material pressure container and a high-speed rotating cylindrical shell, the application special conditions and environment of the composite material cylindrical shell are considered while sufficient strength is provided, special substances are usually stored in the composite material cylindrical shell, and the composite material cylindrical shell needs to have strict sealing performance so as to play a role in isolating the outside. Therefore, the air tightness of the composite material needs to be tested in combination with the particular substance to be stored in the composite material cylindrical shell at the initial stage of application.
When the traditional end face sealing die is applied, the sealing rubber ring is very easy to scratch due to the fact that the composite material cylinder is thin, and sealing cannot be achieved.
The composite material has a multilayer structure, is divided into an annular layer and a multi-angle layer according to a laminated plate theory, and has different designs according to different functions, and the functional action and the thickness of each layer are different. Even if the end face sealing die is improved, the whole sealing performance test can be carried out only, and the air tightness of a specific layer cannot be detected.
SUMMERY OF THE UTILITY MODEL
The utility model provides a overcome the shortcoming that exists among the prior art and propose, its purpose provides a combined material barrel inner wall seal test device.
The utility model discloses a realize through following technical scheme:
a sealing test device for the inner wall of a composite material cylinder comprises an upper sealing mould and a lower sealing mould which are arranged at two ends of the composite material cylinder; the upper sealing die comprises an upper outer flange plate which is contacted with the upper end surface of the composite material cylinder and an upper inner flange plate which is arranged in the composite material cylinder, and the upper outer flange plate and the upper inner flange plate are connected through a plurality of bolts; through holes are formed between the upper outer flange and the upper inner flange, and the top of the upper outer flange is connected with an evacuation mechanism; the lower sealing die comprises a lower outer flange plate which is contacted with the lower end face of the composite material cylinder and a lower inner flange plate which is arranged in the composite material cylinder, and the lower outer flange plate and the lower inner flange plate are connected through a plurality of bolts; and outer sealing rings are arranged between the upper inner flange plate and the outer flange plate and between the lower inner flange plate and the outer flange plate.
In the technical scheme, the evacuation mechanism comprises a vacuum valve seat and two valves arranged on the vacuum valve seat, one valve is communicated with the vacuum obtaining system, the other valve is connected with the vacuum detection device, and the vacuum valve seat is communicated with the interior of the composite material cylinder through a through hole between the upper outer flange and the upper inner flange.
In the above technical scheme, the end face of the upper outer flange close to the upper inner flange forms a convex ring.
In the technical scheme, an annular groove is formed in the end face, close to the upper outer flange, of the upper inner flange, and the position of the annular groove corresponds to that of the convex ring.
In the above technical scheme, an inner sealing ring is arranged in the annular groove.
In the above technical solution, the apparatus further comprises a helium mass spectrometer leak detector.
In the technical scheme, the diameters of the upper outer flange and the lower outer flange are larger than the outer diameter of the composite material cylinder.
In the technical scheme, the diameters of the upper inner flange and the lower inner flange are smaller than the inner diameter of the composite material cylinder.
In the above technical scheme, the end face of the upper inner flange close to the upper outer flange and the end face of the lower inner flange close to the lower outer flange form bosses, and the outer seal ring is arranged between the outer wall of the boss and the inner wall of the composite material cylinder.
In the above technical scheme, the through hole between the upper outer flange and the upper inner flange is coaxial with the vacuum valve seat.
The utility model has the advantages that:
the utility model provides a be suitable for combined material barrel inner wall sealed test device, through realize sealed at barrel port inner wall tip, guarantee the leakproofness of barrel port, whether there is the leak source through helium mass spectrometer leak detector probing leakage to the realization detects the gas tightness of combined material barrel inlayer, has realized under the intact state of outer combined material, detects multi-angle layer and inlayer combined material's gas tightness.
Drawings
Fig. 1 is a schematic structural diagram of the composite material cylinder inner wall sealing test device of the present invention.
Wherein:
1 upper outer flange and 2 lower outer flange
3 upper inner flange and 4 lower inner flange
5 bolt 6 outer sealing ring
7 vacuum valve seat and 8 valves
9 convex ring 10 internal seal ring
11 composite cylinder.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the composite material cylinder inner wall sealing test device of the present invention is further described below by referring to the drawings of the specification and the specific implementation manner.
Example 1
As shown in FIG. 1, a composite material cylinder inner wall sealing test device comprises an upper sealing mold and a lower sealing mold arranged at two ends of a composite material cylinder 11,
the upper sealing mould comprises an upper outer flange 1 which is contacted with the upper end surface of the composite material cylinder body 11 and an upper inner flange 3 which is arranged inside the upper end of the composite material cylinder body 11, and the upper outer flange 1 and the upper inner flange are fixedly connected through a plurality of bolts 5; an outer sealing ring 6 is arranged between the upper outer flange plate 1 and the upper inner flange plate 3;
through holes are formed between the upper outer flange plate 1 and the upper inner flange plate 3, and the top of the upper outer flange plate 1 is connected with a vacuumizing mechanism; the evacuating mechanism comprises a vacuum valve seat 7 and two valves 8 arranged on the vacuum valve seat, one valve 8 is communicated with a vacuum obtaining system, the other valve is connected with a vacuum detection device, and the vacuum valve seat 7 is communicated with the interior of the composite material cylinder body 11 through a through hole between the upper outer flange plate 1 and the upper inner flange plate 3. And the through hole between the upper outer flange plate 1 and the upper inner flange plate 3 is coaxial with the vacuum valve seat 7.
The lower sealing die comprises a lower outer flange 2 which is contacted with the lower end face of the composite material cylinder 11 and a lower inner flange 4 which is arranged in the composite material cylinder 11, and the lower outer flange 2 and the lower inner flange are connected through a plurality of bolts 5;
and an outer sealing ring 6 is arranged between the lower outer flange 2 and the lower inner flange 4.
The diameters of the upper outer flange 1 and the lower outer flange 2 are larger than the outer diameter of the composite material cylinder body 11.
The diameters of the upper inner flange 3 and the lower inner flange 4 are smaller than the inner diameter of the composite material cylinder body 11.
The end face of the upper inner flange 3 close to the upper outer flange 1 and the end face of the lower inner flange 4 close to the lower outer flange 2 form bosses, and the outer sealing ring 6 is arranged between the outer wall of the boss and the inner wall of the composite material cylinder body 11.
In this embodiment, the device for testing the sealing of the inner wall of the composite material cylinder further comprises a helium mass spectrometer leak detector, so that on one hand, the detection and judgment on the sealing condition are realized, and on the other hand, the airtightness detection on the composite material cylinder is realized.
In this embodiment, in order to further guarantee the sealed effect of combined material barrel, go up seal mould and set up interior seal structure, interior seal structure is including being formed at last outer flange 1 and being close to the bulge loop 9 of 3 side end faces of last inner flange to and be formed at the annular groove that last inner flange 3 is close to 1 side end face of last outer flange, and both positions of bulge loop 9 and annular groove set up relatively, and set up interior sealing washer 10 in the annular groove, and then when outer flange 1 and last inner flange 3 in the bolt 5 fastening, bulge loop 9 extrudees interior sealing washer 10, realizes the inlayer and seals, realizes double-deck sealed protection.
The utility model discloses a sealed principle:
the utility model discloses a sealing die at upper and lower both ends realizes the sealed to combined material barrel both ends, sealing die has that the external diameter is less than the interior ring flange of combined material barrel internal diameter (go up interior ring flange 3 promptly and interior ring flange 4 down) and the external diameter is greater than the outer ring flange structure of combined material barrel external diameter (go up outer ring flange 1 promptly and outer ring flange 2 down) and constitutes, pass through the bolt-up between the two, when screwing up the bolt, interior and exterior ring flange structure is close to each other, the extrusion rubber circle produces and warp, and then to the barrel inner wall top production pressure, form the sealed chamber of barrel inner wall.
The utility model discloses a working process:
before the experiment begins, the two vacuum valve seats and the valve are connected with a vacuum obtaining system and a vacuum detection device; the upper outer flange and the upper inner flange are extruded through bolts, so that the upper outer sealing cavity ring is extruded to generate inward and outward deformation and is contacted with the inner wall of the composite material cylinder body to generate a sealing effect; and in the same way, the bolts extrude the lower flange plate and the lower inner flange plate to deform the lower outer sealing cavity ring, so that the lower end sealing effect of the die is generated. And (5) installing an experimental device. After the vacuum acquisition system is installed, starting the vacuum acquisition system, pumping to limit pressure, closing a valve connected with the vacuum acquisition system, and recording the reading of the vacuum detection device after the system is stabilized for a certain time; the sealing condition at the sealing face was detected using a helium mass spectrometer leak detector. The vacuum detection device is suitable for testing the vacuum degree and the pressure maintaining condition, when the vacuum pumping is carried out for a period of time, the valve is closed, and if the sealing is good, the vacuum degree can be maintained to be stable for a long time. The helium leakage rate test of the helium mass spectrometer leak detector is to detect the leakage rate of the integral composite material cylinder to helium.
The utility model discloses the combined material layer of combined material barrel to constitute by the structure of inside pure hoop + middle part angle layer + outside pure hoop to interior radial layer thickness is less than 0.30mm, under this condition, the pure hoop layer of inlayer self does not possess the leakproofness, what "inner wall seal test device" tested is the leakproofness on angle layer, and if there is surface treatment layer or metal foil as the inside lining on the barrel inner wall, detect the gas tightness of inside liner. The utility model discloses whether the pure hoop layer of outside on combined material layer is intact, can both detect the gas tightness of middle part angle layer, inner liner (every technology does not necessarily all have the inner liner), only middle part angle layer, inner liner hoop layer all take place gas leakage, just can detect out gas leakage.
An example of a sealing test conducted on a composite cylinder using the apparatus of example 1 is as follows:
example one
The inner diameter of the composite material cylinder is 200mm, the outer diameter of the composite material cylinder is 210mm, and the axial length of the cylinder is 300 mm; designing the diameter of an inner flange of the sealing mould to be 199mm and the diameter of an outer flange of the sealing mould to be 215 mm; after the assembly of the sealing die is completed, the helium mass spectrometer is connected, and the leak rate is 10- 10Pa.m3.s-1(ii) a And judging that the tightness of the inner layer of the cylinder is qualified.
Example two
The inner diameter of the composite material cylinder is 100mm, the outer diameter of the composite material cylinder is 110mm, and the axial length of the cylinder is 300 mm; designing an inner flange plate of the inner wall sealing mould to have the diameter of 99mm and an outer flange plate to have the diameter of 115 mm; thirdly, after the inner wall sealing die is assembled, the helium mass spectrometer is connected, and the initial leak rate is 10-6Pa.m3.s-1(ii) a And judging that the sealing performance of the inner layer of the cylinder is unqualified.
The utility model provides a be suitable for combined material barrel inner wall sealed test device, through realize sealed at barrel port inner wall tip, guarantee the leakproofness of barrel port, whether there is the leak source through helium mass spectrometer leak detector probing leakage to the realization detects the gas tightness of combined material barrel inlayer, has realized under the intact state of outer combined material, detects multi-angle layer and inlayer combined material's gas tightness.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of 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 therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.
Claims (10)
1. The utility model provides a combined material barrel inner wall seals test device, is including setting up in the upper and lower sealing die at combined material barrel (11) both ends, its characterized in that:
the upper sealing mould comprises an upper outer flange (1) which is contacted with the upper end surface of the composite material cylinder (11) and an upper inner flange (3) which is arranged in the composite material cylinder (11), and the upper outer flange and the upper inner flange are connected through a plurality of bolts (5); through holes are formed between the upper outer flange (1) and the upper inner flange (3), and the top of the upper outer flange (1) is connected with an evacuation mechanism;
the lower sealing die comprises a lower outer flange (2) in contact with the lower end face of the composite material cylinder (11) and a lower inner flange (4) arranged in the composite material cylinder (11), and the lower outer flange and the lower inner flange are connected through a plurality of bolts (5);
and outer sealing rings (6) are arranged between the upper inner flange plate (3) and the upper outer flange plate (1) and between the lower inner flange plate (4) and the lower outer flange plate (2).
2. The composite material cylinder inner wall seal test device according to claim 1, characterized in that: the evacuation mechanism comprises a vacuum valve seat (7) and two valves (8) arranged on the vacuum valve seat, one valve (8) is communicated with a vacuum obtaining system, the other valve is connected with a vacuum detection device, and the vacuum valve seat (7) is communicated with the interior of the composite material cylinder body (11) through a through hole between the upper outer flange plate (1) and the upper inner flange plate (3).
3. The composite material cylinder inner wall seal test device according to claim 1, characterized in that: and a convex ring (9) is formed on the end surface of the upper outer flange (1) close to the upper inner flange (3).
4. The composite material cylinder inner wall seal test device according to claim 1, characterized in that: an annular groove is formed in the end face, close to the upper outer flange plate (1), of the upper inner flange plate (3), and the position of the annular groove corresponds to that of the convex ring (9).
5. The composite material cylinder inner wall seal test device according to claim 4, characterized in that: an inner sealing ring (10) is arranged in the annular groove.
6. The composite material cylinder inner wall seal test device according to claim 1, characterized in that: also included is a helium mass spectrometer leak detector.
7. The composite material cylinder inner wall seal test device according to claim 1, characterized in that: the diameters of the upper outer flange (1) and the lower outer flange (2) are larger than the outer diameter of the composite material cylinder body (11).
8. The composite material cylinder inner wall seal test device according to claim 1, characterized in that: the diameters of the upper inner flange (3) and the lower inner flange (4) are smaller than the inner diameter of the composite material cylinder body (11).
9. The composite material cylinder inner wall seal test device according to claim 1, characterized in that: the end face of the upper inner flange (3) close to the upper outer flange (1) and the end face of the lower inner flange (4) close to the lower outer flange (2) form bosses, and the outer sealing ring (6) is arranged between the outer wall of the boss and the inner wall of the composite material cylinder body (11).
10. The composite material cylinder inner wall seal test device according to claim 1, characterized in that: and the through hole between the upper outer flange (1) and the upper inner flange (3) is coaxial with the vacuum valve seat (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121319205.8U CN214893898U (en) | 2021-06-15 | 2021-06-15 | Sealing test device for inner wall of composite material barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121319205.8U CN214893898U (en) | 2021-06-15 | 2021-06-15 | Sealing test device for inner wall of composite material barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214893898U true CN214893898U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121319205.8U Active CN214893898U (en) | 2021-06-15 | 2021-06-15 | Sealing test device for inner wall of composite material barrel |
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| Country | Link |
|---|---|
| CN (1) | CN214893898U (en) |
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2021
- 2021-06-15 CN CN202121319205.8U patent/CN214893898U/en active Active
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