CN115773870A - Clamp for detecting performance of breathing valve of aviation oxygen supply mask - Google Patents
Clamp for detecting performance of breathing valve of aviation oxygen supply mask Download PDFInfo
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- CN115773870A CN115773870A CN202211581677.XA CN202211581677A CN115773870A CN 115773870 A CN115773870 A CN 115773870A CN 202211581677 A CN202211581677 A CN 202211581677A CN 115773870 A CN115773870 A CN 115773870A
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Abstract
The invention discloses a clamp for detecting the performance of an exhalation valve of an aviation oxygen supply mask, which comprises: the large adapter sealing washer, the large adapter, the small sleeve, the fastening nut, the small adapter and the main body; the large connecting nozzle is sequentially sleeved with the small sleeve, the fastening nut and the main body from bottom to top; a nested mounting area in threaded connection is arranged between the small sleeve and the fastening nut; the side wall surface of the main body is provided with a mounting hole, the small connector is connected with the mounting hole of the main body in an airtight manner, and the small connector is connected with an external sensor and used for testing the pressure in the breathing valve of the oxygen supply mask; the side wall surface of the large connector is provided with a vent hole, so that air flow between the small connector and the large connector is circulated. The technical scheme of the invention solves the problems that the special fixture for the special curved surface is difficult to manufacture, inconvenient to install in use and inaccurate in test result caused by the fact that the air tightness of the special fixture cannot be completely good when the special fixture is used for masks with different sizes in the test process of the breathing valve of the aviation oxygen supply mask.
Description
Technical Field
The invention relates to the technical field of aviation product testing, in particular to a clamp for detecting the performance of an exhalation valve of an aviation oxygen supply mask.
Background
When the performance of the exhalation valve of the existing aviation oxygen supply mask is detected, a special clamp with a special curved surface is adopted, as shown in fig. 1, which is a schematic diagram of the special clamp adopted by the performance detection of the exhalation valve of the existing aviation oxygen supply mask. The special fixture in figure 1 is manufactured manually, is difficult to manufacture, is inconvenient to install when in use, can not have completely good air tightness aiming at masks with different sizes, and can not meet the requirements of wide use and accurate test.
Disclosure of Invention
The purpose of the invention is as follows: the embodiment of the invention provides a clamp for detecting the performance of an exhalation valve of an aviation oxygen supply mask, and aims to solve the problems that the existing special clamp for detecting the performance of the exhalation valve of the aviation oxygen supply mask is manufactured manually, so that the manufacturing difficulty is high, the installation is inconvenient during use, the airtightness of masks with different sizes cannot be completely good, the requirements of wide use and accurate test cannot be met, and the like.
The technical scheme of the invention is as follows: the embodiment of the invention provides a clamp for detecting the performance of an exhalation valve of an aviation oxygen supply mask, which comprises: the large nozzle sealing washer 1, the large nozzle 2, the small sleeve 3, the fastening nut 4, the small nozzle 5, the main body 6 and the small nozzle sealing washer 7;
the large nozzle 2 is of a shaft structure with a central through hole, and the small sleeve 3, the fastening nut 4 and the main body 6 are sequentially sleeved and mounted on the large nozzle 2 from bottom to top;
a nesting mounting area is arranged between the small sleeve 3 and the fastening nut 4 and is connected through threads; the side wall surface of the main body 6 is provided with a mounting hole, the small connector 5 is hermetically connected with the mounting hole of the main body 6 through a small connector sealing gasket 7, and the small connector 5 is connected with an external sensor and used for testing the pressure in the breathing valve of the oxygen mask;
the side wall surface of the large nozzle 2 is provided with a vent hole, so that air flow between the small nozzle 5 and the large nozzle 2 is circulated.
Optionally, in the jig for detecting the performance of the exhalation valve of the oxygen mask for aviation supply,
the large nozzle 2 is arranged into a revolving body structure with a central through hole; the lower end of the large connecting nozzle 2 is provided with an outward convex annular shaft shoulder 2-1, and the upper end of the large connecting nozzle 2 is provided with an external thread 2-2 and a vent hole group 2-3;
the sealing washer 1 is arranged on the bottom end face of the convex annular shaft shoulder 2-1 of the large adapter 2, and the large adapter 2 is in threaded airtight connection with the main body 6 through the external threads 2-2.
Optionally, in the jig for detecting the performance of the exhalation valve of the oxygen mask for aviation supply,
the main body 6 is provided with a revolving body structure with a central through hole; an inward convex annular shaft shoulder 6-1 and first internal threads 6-2 are arranged in a central through hole of the main body 6, a mounting hole perpendicular to the central through hole is formed in the side wall of the main body 6, and second internal threads 6-3 are arranged in the mounting hole;
the upper end of the large nozzle 2 is arranged in the main body 6, the top end of the large nozzle 2 is limited by an inner convex annular shaft shoulder 6-1 in a central shaft hole of the main body 6, and the main body 6 is in airtight connection with an outer thread 2-2 of the large nozzle 2 through a first inner thread 6-2.
Optionally, in the fixture for detecting the performance of the exhalation valve of the oxygen mask for aviation,
the small connecting nozzle 5 is arranged into a revolving body structure with a central through hole; one end of the small nozzle 5 is provided with a nozzle external thread 5-1 for the small nozzle 5 to be in threaded connection with a second internal thread 6-3 of the main body 6 through the nozzle external thread 5-1.
Optionally, in the fixture for detecting the performance of the exhalation valve of the oxygen mask for aviation,
the small sleeve 3 is arranged into a rotary body structure with a central through hole; the bottom end of the small sleeve 3 is provided with a special-shaped shaft shoulder 3-1, and the upper end of the small sleeve 3 is provided with a small sleeve internal thread 3-2; an inward convex annular step 3-3 is arranged in the central through hole of the small sleeve 3;
the bottom end of the large nozzle 2 is arranged in the small sleeve 3, and the annular step 3-3 in the central through hole of the small sleeve 3 is used for limiting the bottom end of the large nozzle 2; and a convex annular shaft shoulder 2-1 and an annular step 3-3 are arranged to limit the installation of the small sleeve 3.
Optionally, in the fixture for detecting the performance of the exhalation valve of the oxygen mask for aviation,
the fastening nut 4 is arranged into a revolving body structure with a central through hole; the bottom end of the fastening screw cap 4 is provided with a screw cap external thread 4-1, so that the fastening screw cap 4 is in threaded connection with a small sleeve internal thread 3-2 of the small sleeve 3 through the screw cap external thread 4-1; after connection, the nut external thread 4-1 of the fastening nut 4 is embedded between the small sleeve internal thread 3-2 of the small sleeve 3 and the shaft body of the large nozzle 2.
Optionally, in the fixture for detecting the performance of the exhalation valve of the oxygen mask for aviation,
the large nozzle sealing washer 1 and the small nozzle sealing washer 7 are both arranged into a revolving body structure with a central through hole;
the bottom end of the large nozzle 2 is provided with an annular boss for installing the large nozzle sealing washer 1 between the annular boss and the outward convex annular shaft shoulder 2-1;
the small nozzle 5 is provided with an annular convex shoulder structure and used for installing a small nozzle sealing gasket 7 between the inner end face of the annular convex shoulder and the outer side wall face of the main body 6.
Optionally, in the fixture for detecting the performance of the exhalation valve of the oxygen mask for aviation,
the sealing washer 1, the large nozzle 2, the small sleeve 3, the fastening nut 4 and the main body 6 are of a coaxial mounting structure.
The invention has the beneficial effects that: the embodiment of the invention provides a clamp for detecting the performance of an exhalation valve of an aviation oxygen supply mask. Therefore, the problems that a special clamp for a special curved surface is high in manufacturing difficulty and inconvenient to install during use in the process of testing the exhalation valve of the aviation oxygen supply mask at present, the airtightness of masks with different sizes cannot be completely good, and the requirements of wide use and accurate testing cannot be met are solved, and the special clamp has a high application value.
Drawings
The accompanying drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and are not intended to limit the invention.
FIG. 1 is a schematic view of a special fixture used for performance detection of an exhalation valve of an existing aviation oxygen mask;
fig. 2 is a schematic structural diagram of a fixture for detecting performance of an exhalation valve of an oxygen mask in an aviation.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
It has been demonstrated in the above background art that, when the performance of the exhalation valve of the existing aviation oxygen supply mask is tested, the special fixture is manufactured manually, which is difficult to manufacture, inconvenient to install during use, and unable to completely improve the air tightness of masks of different sizes, and unable to meet the requirements of wide use and accurate test.
Aiming at various problems of the special curved-surface special fixture used for detecting the performance of the breathing valve of the aviation oxygen supply mask, the embodiment of the invention provides the fixture for detecting the performance of the breathing valve of the aviation oxygen supply mask, which can replace the special curved-surface special fixture and is quickly and airtightly connected with the breathing valve, so that the accurate performance test of the breathing valve of the aviation oxygen supply mask is realized.
The following specific embodiments of the present invention may be combined, and the same or similar concepts or processes may not be described in detail in some embodiments.
Fig. 2 is a schematic structural diagram of a fixture for detecting performance of an exhalation valve of an oxygen mask in an aviation. The clamp for detecting the performance of the exhalation valve of the aviation oxygen supply mask provided by the embodiment of the invention can comprise: the large nozzle sealing washer 1, the large nozzle 2, the small sleeve 3, the fastening nut 4, the small nozzle 5, the main body 6 and the small nozzle sealing washer 7.
Referring to the structure of the clamp shown in fig. 2, the large nozzle 2 in the embodiment of the present invention is configured as a shaft structure having a central through hole, and the small sleeve 3, the fastening nut 4 and the main body 6 are sequentially installed on the large nozzle 2 in a sleeved manner from bottom to top.
In the embodiment of the invention, a nesting mounting area is arranged between the small sleeve 3 and the fastening nut 4 and is connected through threads; the side wall surface of the main body 6 is provided with a mounting hole, the small connector 5 is hermetically connected with the mounting hole of the main body 6 through a small connector sealing gasket 7, and the small connector 5 is connected with an external sensor and used for testing the pressure in the breathing valve of the oxygen supply mask. In addition, the side wall surface of the large nozzle 2 in the embodiment of the invention is provided with the vent hole, so that the air flow between the small nozzle 5 and the large nozzle 2 can be realized.
As shown in fig. 2, in the embodiment of the present invention, the large nipple 2 is provided as a solid of revolution structure having a central through hole; the lower end of the large connector 2 is provided with an outward convex annular shaft shoulder 2-1, and the upper end of the large connector 2 is provided with an external thread 2-2 and a vent hole group 2-3.
Based on the specific structure of the large adapter 2 in the embodiment of the invention, the sealing gasket 1 is arranged on the bottom end face of the convex annular shaft shoulder 2-1 of the large adapter 2, and the large adapter 2 is in threaded airtight connection with the main body 6 through the external threads 2-2.
As shown in fig. 2, in the embodiment of the present invention, the body 6 is provided as a solid of revolution structure having a central through hole; an inward convex annular shaft shoulder 6-1 and first internal threads 6-2 are arranged in a central through hole of the main body 6, a mounting hole perpendicular to the central through hole is formed in the side wall of the main body 6, and second internal threads 6-3 are arranged in the mounting hole.
Based on the specific structure of the main body 6 in the embodiment of the invention, the upper end of the large nozzle 2 is arranged in the main body 6, the top end of the large nozzle 2 is limited by an inner convex annular shaft shoulder 6-1 in a central shaft hole of the main body 6, and the main body 6 is in airtight connection with an outer thread 2-2 of the large nozzle 2 through a first inner thread 6-2.
As shown in fig. 2, in the embodiment of the present invention, the small nipple 5 is provided as a solid of revolution structure having a central through hole; one end of the small nozzle 5 is provided with a nozzle external thread 5-1 for the small nozzle 5 to be in threaded connection with a second internal thread 6-3 of the main body 6 through the nozzle external thread 5-1. In addition, it can be seen that the other end of the small nozzle 5 is provided with a cone structure for connecting an external sensor.
As shown in fig. 2, in the embodiment of the present invention, the small sleeve 3 is provided as a solid of revolution structure having a central through hole; the bottom end of the small sleeve 3 is provided with a special-shaped shaft shoulder 3-1, and the upper end of the small sleeve 3 is provided with a small sleeve internal thread 3-2; an inward convex annular step 3-3 is arranged in the central through hole of the small sleeve 3.
Based on the specific structure of the small sleeve 3 in the embodiment of the invention, the bottom end of the large nozzle 2 is arranged in the small sleeve 3, and the annular step 3-3 in the central through hole of the small sleeve 3 limits the bottom end of the large nozzle 2; and a convex annular shaft shoulder 2-1 and an annular step 3-3 are arranged to limit the installation of the small sleeve 3.
As shown in fig. 2, in the embodiment of the present invention, the fastening nut 4 is provided as a solid of revolution structure having a central through hole; the bottom end of the fastening nut 4 is provided with a nut external thread 4-1 so that the fastening nut 4 is threadedly connected with the small sleeve internal thread 3-2 of the small sleeve 3 through the nut external thread 4-1. After the fastening nut 4 is connected with the small sleeve 3, the nut external thread 4-1 of the fastening nut 4 is embedded between the small sleeve internal thread 3-2 of the small sleeve 3 and the shaft body of the large nozzle 2.
As shown in fig. 2, in the embodiment of the present invention, the large-nozzle sealing gasket 1 and the small-nozzle sealing gasket 7 are each configured as a solid of revolution having a central through hole.
Correspondingly, the bottom end of the large nozzle 2 is provided with an annular boss for installing the large nozzle sealing washer 1 between the annular boss and the outward convex annular shaft shoulder 2-1. In addition, the small nipple 5 is provided with an annular shoulder structure for mounting the small nipple sealing gasket 7 between the inner end surface of the annular shoulder and the outer side wall surface of the body 6.
In the mounting structure of the fixture for detecting the performance of the exhalation valve of the oxygen mask, provided by the embodiment of the invention, the sealing gasket 1, the large connector 2, the small sleeve 3, the fastening nut 4 and the main body 6 are in a coaxial mounting structure.
According to the clamp for detecting the performance of the breathing valve of the aviation oxygen supply mask, provided by the embodiment of the invention, the breathing valve of the mask is connected with the large connector in an airtight manner through the special-shaped shaft shoulder and the fastening nut of the small sleeve, so that the requirement for quickly and reliably connecting the breathing valve of the aviation oxygen supply mask in the performance test is met. Therefore, the problems that a special clamp for a special curved surface is high in manufacturing difficulty and inconvenient to install during use in the process of testing the exhalation valve of the aviation oxygen supply mask at present, the airtightness of masks with different sizes cannot be completely good, and the requirements of wide use and accurate testing cannot be met are solved, and the special clamp has a high application value.
The working principle of the clamp for detecting the performance of the exhalation valve of the oxygen mask provided by the embodiment of the invention is described as follows:
the anchor clamps working process that aviation oxygen suppliment face guard expiratory valve performance detected is as follows, unscrew fastening nut 4 and 3 screw threads of little sleeve, install the draw-in groove of expiratory valve with the special-shaped shaft shoulder 3-1 of little sleeve 3 in, with fastening nut 4 and 3 screw threads screw in of little sleeve, big connector seal ring 1 is compressed at the in-process of screw in, thereby realize the airtight intercommunication of expiratory valve and big connector 2, external equipment passes through main part 6 and supplies air to the expiratory valve, can measure expiratory valve front end pressure numerical value from little connector 5 department.
The volume in the cavity of the large nozzle 2 is equivalent to the volume between the human face and the oxygen supply mask, and the residual pressure value in the cavity of the large nozzle 2 measured by the small nozzle 5 is the residual pressure between the human face and the oxygen supply mask.
Although the embodiments of the present invention have been described above, the above description is only for the purpose of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a anchor clamps that is used for aviation oxygen suppliment face guard to exhale valve performance and detects which characterized in that includes: the large nozzle sealing washer (1), the large nozzle (2), the small sleeve (3), the fastening nut (4), the small nozzle (5), the main body (6) and the small nozzle sealing washer (7);
the large connecting nozzle (2) is of a shaft structure with a central through hole, and the small sleeve (3), the fastening nut (4) and the main body (6) are sequentially sleeved on the large connecting nozzle (2) from bottom to top;
a nesting mounting area is arranged between the small sleeve (3) and the fastening nut (4), and the nesting mounting area is connected through threads; the side wall surface of the main body (6) is provided with a mounting hole, the small connector (5) is hermetically connected with the mounting hole of the main body (6) through a small connector sealing gasket (7), and the small connector (5) is connected with an external sensor and used for testing the pressure in the breathing valve of the oxygen supply mask;
the side wall surface of the large nozzle (2) is provided with a vent hole, so that air flow between the small nozzle (5) and the large nozzle (2) circulates.
2. The clamp for detecting the performance of the exhalation valve of the oxygen mask for aviation according to claim 1,
the large connecting nozzle (2) is arranged to be a revolving body structure with a central through hole; the lower end of the large connecting nozzle (2) is provided with an outward convex annular shaft shoulder (2-1), and the upper end of the large connecting nozzle (2) is provided with an external thread (2-2) and a vent hole group (2-3);
the sealing washer (1) is arranged on the bottom end face of the convex annular shaft shoulder (2-1) of the large connector (2), and the large connector (2) is in threaded airtight connection with the main body (6) through the external threads (2-2).
3. The clamp for detecting the performance of the exhalation valve of the aviation oxygen mask according to claim 2, wherein,
the main body (6) is arranged to be a rotary body structure with a central through hole; an inward convex annular shaft shoulder (6-1) and a first internal thread (6-2) are arranged in a central through hole of the main body (6), a mounting hole perpendicular to the central through hole is formed in the side wall of the main body (6), and a second internal thread (6-3) is arranged in the mounting hole;
the upper end of the large nozzle (2) is arranged in the main body (6), the large nozzle (2) is limited at the top end by an inner convex annular shaft shoulder (6-1) in a central shaft hole of the main body (6), and the main body (6) is in airtight connection with an outer thread (2-2) of the large nozzle (2) through a first inner thread (6-2).
4. The clamp for detecting the performance of the exhalation valve of the aviation oxygen mask according to the claim 3,
the small connecting nozzle (5) is arranged into a revolving body structure with a central through hole; one end of the small nozzle (5) is provided with a nozzle external thread (5-1) for the small nozzle (5) to be in threaded connection with the second internal thread (6-3) of the main body (6) through the nozzle external thread (5-1).
5. The clamp for detecting the performance of the exhalation valve of the aviation oxygen mask according to claim 4, wherein,
the small sleeve (3) is arranged into a revolving body structure with a central through hole; the bottom end of the small sleeve (3) is provided with a special-shaped shaft shoulder (3-1), and the upper end of the small sleeve (3) is provided with a small sleeve internal thread (3-2); an inward convex annular step (3-3) is arranged in the central through hole of the small sleeve (3);
the bottom end of the large joint nozzle (2) is arranged in the small sleeve (3), and the annular step (3-3) in the central through hole of the small sleeve (3) is used for limiting the bottom end of the large joint nozzle (2); and a convex annular shaft shoulder (2-1) and an annular step (3-3) are arranged to limit the installation of the small sleeve (3).
6. The clamp for detecting the performance of the exhalation valve of the aviation oxygen mask according to claim 5, wherein,
the fastening nut (4) is arranged to be a rotary body structure with a central through hole; the bottom end of the fastening nut (4) is provided with a nut external thread (4-1) so that the fastening nut (4) is in threaded connection with a small sleeve internal thread (3-2) of the small sleeve (3) through the nut external thread (4-1); after connection, the nut external thread (4-1) of the fastening nut (4) is embedded between the small sleeve internal thread (3-2) of the small sleeve (3) and the shaft body of the large nozzle (2).
7. The clamp for detecting the performance of the exhalation valve of the aviation oxygen mask according to claim 6, wherein,
the large joint sealing washer (1) and the small joint sealing washer (7) are both arranged into a revolving body structure with a central through hole;
the bottom end of the large nozzle (2) is provided with an annular boss for installing the large nozzle sealing washer (1) between the annular boss and the outward convex annular shaft shoulder (2-1);
the small nozzle (5) is provided with an annular convex shoulder structure and used for installing a small nozzle sealing gasket (7) between the inner end face of the annular convex shoulder and the outer side wall face of the main body (6).
8. The clamp for detecting the performance of the breathing valve of the oxygen supply mask for aviation according to any one of claims 1 to 7, wherein the clamp comprises a clamping head and a clamping head,
the sealing washer (1), the large adapter (2), the small sleeve (3), the fastening nut (4) and the main body (6) are of a coaxial installation structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211581677.XA CN115773870A (en) | 2022-12-09 | 2022-12-09 | Clamp for detecting performance of breathing valve of aviation oxygen supply mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211581677.XA CN115773870A (en) | 2022-12-09 | 2022-12-09 | Clamp for detecting performance of breathing valve of aviation oxygen supply mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115773870A true CN115773870A (en) | 2023-03-10 |
Family
ID=85392267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211581677.XA Pending CN115773870A (en) | 2022-12-09 | 2022-12-09 | Clamp for detecting performance of breathing valve of aviation oxygen supply mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115773870A (en) |
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2022
- 2022-12-09 CN CN202211581677.XA patent/CN115773870A/en active Pending
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