CN219224117U - Clamp for detecting performance of exhalation valve of aviation oxygen supply mask - Google Patents
Clamp for detecting performance of exhalation valve of aviation oxygen supply mask Download PDFInfo
- Publication number
- CN219224117U CN219224117U CN202223325599.5U CN202223325599U CN219224117U CN 219224117 U CN219224117 U CN 219224117U CN 202223325599 U CN202223325599 U CN 202223325599U CN 219224117 U CN219224117 U CN 219224117U
- Authority
- CN
- China
- Prior art keywords
- small
- main body
- hole
- oxygen supply
- joint mouth
- 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.)
- Active
Links
Images
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model discloses a clamp for detecting the performance of an exhalation valve of an aviation oxygen supply mask, which comprises the following components: a large nozzle sealing gasket, a large nozzle, a small sleeve, a fastening nut, a small nozzle and a main body; the large connector is sleeved with a small mounting sleeve, a fastening nut and a main body from bottom to top in sequence; the small sleeve is provided with a nested installation area in threaded connection with 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 is used for testing the pressure in the exhalation valve of the oxygen supply mask; the side wall surface of the large connecting nozzle is provided with a vent hole, so that air flow between the small connecting nozzle and the large connecting nozzle can circulate. The technical scheme of the utility model solves the problems that the special fixture with a special curved surface is difficult to manufacture, inconvenient to install in use, inaccurate in test result caused by incomplete air tightness of the special fixture when the special fixture is used for masks with different sizes in the test process of the exhalation valve of the aviation oxygen supply mask, and the like.
Description
Technical Field
The utility model 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 fixture with a special curved surface is adopted, as shown in fig. 1, and the special fixture is used for detecting the performance of the exhalation valve of the existing aviation oxygen supply mask. The special fixture in fig. 1 is manufactured manually, has large manufacturing difficulty and inconvenient installation during use, cannot completely achieve good air tightness for masks with different sizes, and cannot meet the requirements of wide use and accurate test.
Disclosure of Invention
The purpose of the utility model is that: the embodiment of the utility model provides a clamp for detecting the performance of an exhalation valve of an aviation oxygen supply mask, which aims to solve the problems that the special clamp used in the performance detection of the exhalation valve of the existing aviation oxygen supply mask is manufactured manually, so that the manufacturing difficulty is high, the installation is inconvenient during use, the air tightness of masks with different sizes cannot be completely good, and the requirements of wide use and accurate test cannot be met.
The technical scheme of the utility model is as follows: the embodiment of the utility model provides a clamp for detecting the performance of an exhalation valve of an aviation oxygen supply mask, which comprises the following components: a large nozzle sealing gasket 1, a large nozzle 2, a small sleeve 3, a fastening nut 4, a small nozzle 5, a main body 6 and a small nozzle sealing gasket 7;
the large connector 2 is of a shaft structure with a central through hole, and the large connector 2 is sleeved with a small mounting sleeve 3, a fastening nut 4 and a main body 6 from bottom to top in sequence;
a nested mounting area is arranged between the small sleeve 3 and the fastening nut 4, and the nested mounting area is connected through threads; the side wall surface of the main body 6 is provided with a mounting hole, the small nozzle 5 is connected with the mounting hole of the main body 6 in an airtight manner through a small nozzle sealing gasket 7, and the small nozzle 5 is connected with an external sensor and is used for testing the pressure in the exhalation 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 is circulated.
Optionally, in the fixture for detecting the performance of the exhalation valve of the aeronautic oxygen supply mask,
the large connector 2 is arranged into a revolving body structure with a central through hole; the lower end of the large joint mouth 2 is provided with an outer convex annular shaft shoulder 2-1, and the upper end of the large joint mouth 2 is provided with an outer thread 2-2 and a vent hole group 2-3;
the sealing gasket 1 is arranged on the bottom end face of the outer 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 outer threads 2-2.
Optionally, in the fixture for detecting the performance of the exhalation valve of the aeronautic oxygen supply mask,
the main body 6 is provided as a revolution 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 the central through hole of the main body 6, a mounting hole perpendicular to the central through hole is arranged on 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 joint mouth 2 is arranged in the main body 6, the top end of the large joint mouth 2 is limited by an inward convex annular shaft shoulder 6-1 in the central shaft hole of the main body 6, and the main body 6 is in airtight connection with the external thread 2-2 of the large joint mouth 2 through threads specifically through a first internal thread 6-2.
Optionally, in the fixture for detecting the performance of the exhalation valve of the aeronautic oxygen supply mask,
the small connector 5 is arranged into a revolving body structure with a central through hole; one end of the small joint mouth 5 is provided with a joint mouth external thread 5-1, and the small joint mouth 5 is in threaded connection with a second internal thread 6-3 of the main body 6 through the joint mouth external thread 5-1.
Optionally, in the fixture for detecting the performance of the exhalation valve of the aeronautic oxygen supply mask,
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 mouth 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 joint mouth 2; and the small sleeve 3 is installed and limited by the outer convex annular shaft shoulder 2-1 and the annular step 3-3.
Optionally, in the fixture for detecting the performance of the exhalation valve of the aeronautic oxygen supply mask,
the fastening screw cap 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 the 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 joint mouth 2.
Optionally, in the fixture for detecting the performance of the exhalation valve of the aeronautic oxygen supply mask,
the large nozzle sealing gasket 1 and the small nozzle sealing gasket 7 are both arranged in a revolving body structure with a central through hole;
the bottom end of the large joint mouth 2 is provided with an annular boss, and the annular boss is used for installing the large joint mouth sealing gasket 1 between the annular boss and the outer convex annular shaft shoulder 2-1;
the small connector 5 is provided with an annular shoulder structure for installing a small connector sealing gasket 7 between the inner end surface of the annular shoulder and the outer side wall surface of the main body 6.
Optionally, in the fixture for detecting the performance of the exhalation valve of the aeronautic oxygen supply mask,
the sealing gasket 1, the large connector 2, the small sleeve 3, the fastening nut 4 and the main body 6 are of a coaxial mounting structure.
The utility model has the beneficial effects that: the embodiment of the utility model provides a clamp for detecting the performance of an exhalation valve of an aeronautical oxygen supply mask, and the exhalation valve of the mask is connected with a large connector in an airtight manner through a special-shaped shaft shoulder of a small sleeve and a fastening screw cap, so that the rapid and reliable connection requirement in the performance test of the exhalation valve of the aeronautical oxygen supply mask is realized. Therefore, the special fixture for the special curved surface in the existing aviation oxygen supply mask exhalation valve testing process is high in manufacturing difficulty and inconvenient to install in use, cannot completely well air tightness of masks of different sizes, cannot meet the requirements of wide use and accurate testing, and has a large application value.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate and do not limit the utility model.
FIG. 1 is a schematic diagram of a special fixture for detecting the performance of an exhalation valve of an existing aero-oxygen mask;
fig. 2 is a schematic structural diagram of a fixture for detecting performance of an exhalation valve of an aeronautic oxygen supply mask according to an embodiment of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in detail hereinafter with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be arbitrarily combined with each other.
The background art already shows that when the performance of the exhalation valve of the existing aviation oxygen supply mask is detected, the special fixture is manufactured manually, the manufacturing difficulty is high, the installation is inconvenient during use, the air tightness of the mask with different sizes cannot be completely good, and the requirements of wide use and accurate test cannot be met.
Aiming at various problems of the special curved surface special fixture for executing the performance detection of the breathing valve of the aeronautical oxygen supply mask, the embodiment of the utility model provides the fixture for detecting the performance of the breathing valve of the aeronautical oxygen supply mask, which can replace the special fixture with the special curved surface to be quickly and hermetically connected with the breathing valve so as to realize the accurate test of the performance of the breathing valve of the aeronautical oxygen supply mask.
The following specific embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
Fig. 2 is a schematic structural diagram of a fixture for detecting performance of an exhalation valve of an aeronautic oxygen supply mask according to an embodiment of the present utility model. The fixture for detecting the performance of the exhalation valve of the aviation oxygen supply mask provided by the embodiment of the utility model can comprise: a large nozzle sealing gasket 1, a large nozzle 2, a small sleeve 3, a fastening nut 4, a small nozzle 5, a main body 6 and a small nozzle sealing gasket 7.
Referring to the structure of the jig shown in fig. 2, the large nipple 2 in the embodiment of the present utility model is provided as a shaft structure having a central through hole, and the large nipple 2 is sleeved with the small sleeve 3, the fastening nut 4 and the main body 6 in this order from bottom to top.
The small sleeve 3 and the fastening nut 4 are provided with nested mounting areas, and the nested mounting areas are connected through threads; the side wall surface of the main body 6 is provided with a mounting hole, the small connector 5 is connected with the mounting hole of the main body 6 in an airtight manner through the small connector sealing gasket 7, and the small connector 5 is connected with an external sensor and used for testing the pressure in the exhalation valve of the oxygen supply mask. In addition, in the embodiment of the utility model, the side wall surface of the large nozzle 2 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 utility model, the large nozzle 2 is provided as a solid of revolution structure having a central through hole; the lower end of the large joint mouth 2 is provided with an outer convex annular shaft shoulder 2-1, and the upper end of the large joint mouth 2 is provided with an outer thread 2-2 and a vent hole group 2-3.
Based on the specific structure of the large connector 2 in the embodiment of the utility model, the sealing gasket 1 is arranged on the bottom end surface of the outer 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 outer thread 2-2.
As shown in fig. 2, in the embodiment of the present utility model, the main body 6 is provided as a revolution solid structure having a central through hole; an inward convex annular shaft shoulder 6-1 and a first internal thread 6-2 are arranged in the central through hole of the main body 6, a mounting hole perpendicular to the central through hole is arranged on the side wall of the main body 6, and a second internal thread 6-3 is arranged in the mounting hole.
Based on the specific structure of the main body 6 in the embodiment of the utility model, the upper end of the large connector 2 is arranged in the main body 6, the top end of the large connector 2 is limited by an inward convex annular shaft shoulder 6-1 in the central shaft hole of the main body 6, and the main body 6 is in airtight connection with the external thread 2-2 of the large connector 2 through threads specifically through a first internal thread 6-2.
As shown in fig. 2, in the embodiment of the present utility model, the small nipple 5 is provided as a solid of revolution structure having a central through hole; one end of the small joint mouth 5 is provided with a joint mouth external thread 5-1, and the small joint mouth 5 is in threaded connection with a second internal thread 6-3 of the main body 6 through the joint mouth external thread 5-1. In addition, it can be seen that the other end of the small tap 5 is provided with a tapered structure for connecting an external sensor.
As shown in fig. 2, in the embodiment of the present utility model, the small sleeve 3 is provided as a revolution solid 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 utility model, the bottom end of the large connector 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 connector 2; and the small sleeve 3 is installed and limited by the outer convex annular shaft shoulder 2-1 and the annular step 3-3.
As shown in fig. 2, in the embodiment of the present utility model, 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 in threaded connection with the small sleeve internal thread 3-2 of the small sleeve 3 through the nut external thread 4-1. After the fastening screw cap 4 is connected with the small sleeve 3, the screw cap external thread 4-1 of the fastening screw cap 4 is embedded between the small sleeve internal thread 3-2 of the small sleeve 3 and the shaft body of the large joint mouth 2.
As shown in fig. 2, in the embodiment of the present utility model, the large-nozzle sealing gasket 1 and the small-nozzle sealing gasket 7 are each provided as a solid of revolution structure having a central through hole.
Correspondingly, the bottom end of the large joint mouth 2 is provided with an annular boss for installing the large joint mouth sealing gasket 1 between the annular boss and the outer convex annular shaft shoulder 2-1. In addition, the small nozzle 5 is provided with an annular shoulder structure for mounting the small nozzle sealing gasket 7 between the annular shoulder inner end surface and the outer side wall surface of the main body 6.
In the mounting structure of the fixture for detecting the performance of the exhalation valve of the aeronautical oxygen supply mask provided by the embodiment of the utility model, the sealing gasket 1, the large connector 2, the small sleeve 3, the fastening screw cap 4 and the main body 6 are coaxial mounting structures.
According to the clamp for detecting the performance of the exhalation valve of the aeronautical oxygen supply mask, provided by the embodiment of the utility model, the exhalation valve of the mask is connected with the large connector in an airtight manner through the special-shaped shaft shoulder of the small sleeve and the fastening screw cap, so that the rapid and reliable connection requirement in the performance test of the exhalation valve of the aeronautical oxygen supply mask is realized. Therefore, the special fixture for the special curved surface in the existing aviation oxygen supply mask exhalation valve testing process is high in manufacturing difficulty and inconvenient to install in use, cannot completely well air tightness of masks of different sizes, cannot meet the requirements of wide use and accurate testing, and has a large application value.
The working principle of the clamp for detecting the performance of the exhalation valve of the aeronautical oxygen supply mask provided by the embodiment of the utility model is described as follows:
the clamp for detecting the performance of the exhalation valve of the aviation oxygen supply mask is characterized in that a fastening screw cap 4 and a small sleeve 3 are screwed out by screw threads, a special-shaped shaft shoulder 3-1 of the small sleeve 3 is installed in a clamping groove of the exhalation valve, the fastening screw cap 4 and the small sleeve 3 are screwed in by screw threads, and a large nozzle sealing gasket 1 is compressed in the screwing process, so that airtight communication between the exhalation valve and the large nozzle 2 is realized, external equipment supplies air to the exhalation valve through a main body 6, and the pressure value at the front end of the exhalation valve can be measured from a small nozzle 5.
The volume in the cavity of the large connecting mouth 2 is equivalent to the volume between the face of the human body and the oxygen supply mask, and the residual pressure value in the cavity of the large connecting mouth 2 is measured through the small connecting mouth 5 to be the residual pressure between the face of the human body and the oxygen supply mask.
Although the embodiments of the present utility model are described above, the embodiments are only used for facilitating understanding of the present utility model, and are not intended to limit the present utility model. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is to be determined by the appended claims.
Claims (8)
1. A anchor clamps that is used for aviation oxygen suppliment face guard exhale valve performance to detect, characterized in that includes: a large nozzle sealing gasket (1), a large nozzle (2), a small sleeve (3), a fastening screw cap (4), a small nozzle (5), a main body (6) and a small nozzle sealing gasket (7);
the large connector (2) is of a shaft structure with a central through hole, and the large connector (2) is sequentially sleeved with a small sleeve (3), a fastening nut (4) and a main body (6) from bottom to top;
a nested installation area is arranged between the small sleeve (3) and the fastening nut (4), and the nested installation 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 connected with the mounting hole of the main body (6) in an airtight manner 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 an exhalation valve of the oxygen supply mask;
the side wall surface of the large connecting nozzle (2) is provided with a vent hole, so that air flow between the small connecting nozzle (5) and the large connecting nozzle (2) is circulated.
2. The fixture for detecting the performance of an exhalation valve of an aeronautical oxygen supply mask according to claim 1,
the large connector (2) is arranged into a revolving body structure with a central through hole; the lower end of the large joint mouth (2) is provided with an outer convex annular shaft shoulder (2-1), and the upper end of the large joint mouth (2) is provided with an outer thread (2-2) and a vent hole group (2-3);
the sealing gasket (1) is arranged on the bottom end face of the outer convex annular shaft shoulder (2-1) of the large joint mouth (2), and the large joint mouth (2) is in airtight connection with the main body (6) through the outer threads (2-2) of the large joint mouth.
3. The fixture for detecting the performance of an exhalation valve of an aeronautical oxygen supply mask according to claim 2,
the main body (6) is arranged into a revolving 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 arranged on 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 joint mouth (2) is arranged in the main body (6), the top end of the large joint mouth (2) is limited by an inward 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 external thread (2-2) of the large joint mouth (2) through a first internal thread (6-2).
4. A fixture for detecting the performance of an exhalation valve of an aeronautical oxygen supply mask as claimed in claim 3,
the small connector (5) is arranged into a revolving body structure with a central through hole; one end of the small joint mouth (5) is provided with a joint mouth external thread (5-1) for the small joint mouth (5) to be in threaded connection with a second internal thread (6-3) of the main body (6) through the joint mouth external thread (5-1).
5. The fixture for detecting the performance of an exhalation valve of an aeronautical oxygen supply mask as claimed in claim 4,
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 mouth (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 joint mouth (2); and the small sleeve (3) is installed and limited by the outer convex annular shaft shoulder (2-1) and the annular step (3-3).
6. The fixture for detecting the performance of an exhalation valve of an aeronautical oxygen supply mask as claimed in claim 5,
the fastening screw cap (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 the small sleeve internal thread (3-2) of the small sleeve (3) through the screw cap external thread (4-1); after connection, the external screw thread (4-1) of the fastening screw cap (4) is embedded between the internal screw thread (3-2) of the small sleeve (3) and the shaft body of the large joint (2).
7. The fixture for detecting the performance of an exhalation valve of an aeronautical oxygen supply mask as claimed in claim 6,
the large nozzle sealing gasket (1) and the small nozzle sealing gasket (7) are both arranged into a revolving body structure with a central through hole;
the bottom end of the large joint mouth (2) is provided with an annular boss, and the annular boss is used for installing the large joint mouth sealing gasket (1) between the annular boss and the outer convex annular shaft shoulder (2-1);
the small connector (5) is provided with an annular shoulder structure, and is used for installing a small connector sealing gasket (7) between the inner end surface of the annular shoulder and the outer side wall surface of the main body (6).
8. The fixture for detecting the performance of an exhalation valve of an aeronautical oxygen supply mask according to any one of claims 1-7,
the sealing gasket (1), the large connector (2), the small sleeve (3), the fastening nut (4) and the main body (6) are of a coaxial mounting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223325599.5U CN219224117U (en) | 2022-12-09 | 2022-12-09 | Clamp for detecting performance of exhalation valve of aviation oxygen supply mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223325599.5U CN219224117U (en) | 2022-12-09 | 2022-12-09 | Clamp for detecting performance of exhalation valve of aviation oxygen supply mask |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219224117U true CN219224117U (en) | 2023-06-20 |
Family
ID=86750924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223325599.5U Active CN219224117U (en) | 2022-12-09 | 2022-12-09 | Clamp for detecting performance of exhalation valve of aviation oxygen supply mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219224117U (en) |
-
2022
- 2022-12-09 CN CN202223325599.5U patent/CN219224117U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219224117U (en) | Clamp for detecting performance of exhalation valve of aviation oxygen supply mask | |
| CN109211465A (en) | A kind of pressure meter three-way connector with detection mouth | |
| CN115773870A (en) | Clamp for detecting performance of breathing valve of aviation oxygen supply mask | |
| CN217845547U (en) | Leakage testing tool | |
| CN216669141U (en) | Experimental sealing device of no interface gas cylinder | |
| CN216815898U (en) | Sealing connection sample based on fire-fighting equipment pressure test | |
| CN209014190U (en) | A kind of pressure meter three-way connector with detection mouth | |
| CN210499880U (en) | Sealing clamp for airspeed tube | |
| CN210219305U (en) | Gas tank for ultrahigh pressure air compression test | |
| CN217482087U (en) | Semiconductor valve connecting piece | |
| CN208587555U (en) | A kind of valve cock | |
| CN205317427U (en) | Transformer leakage -testing device | |
| CN218442185U (en) | LED wire rod connects and has its LED lamp | |
| CN205534357U (en) | Integral type inflation valve | |
| CN212807483U (en) | Quick intelligent connector | |
| CN210689931U (en) | Quick connector for pressure gauge | |
| CN216669142U (en) | Flange connector gas cylinder test sealing device | |
| CN220083962U (en) | Guide sleeve mounting seat of composite floating measurement device | |
| CN110146225A (en) | A kind of middle outer wing fuel delivery system pipeline air tightness tester and method | |
| CN115808285B (en) | Deep hole sealing assembly in wind tunnel jet test and application method | |
| CN212254504U (en) | Simple wind power motor front end cover air tightness testing tool | |
| CN211449953U (en) | Improved generation gas filled joint | |
| CN219013639U (en) | Novel air-bleed connector | |
| CN210893577U (en) | Sampling gun leak detection device of portable flue gas sampling instrument | |
| CN211477541U (en) | Ball valve detects and uses tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |