CN210716063U - Pneumatic ball valve for throat of ultrahigh-speed wind tunnel - Google Patents
Pneumatic ball valve for throat of ultrahigh-speed wind tunnel Download PDFInfo
- Publication number
- CN210716063U CN210716063U CN201921503996.2U CN201921503996U CN210716063U CN 210716063 U CN210716063 U CN 210716063U CN 201921503996 U CN201921503996 U CN 201921503996U CN 210716063 U CN210716063 U CN 210716063U
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- Prior art keywords
- throat
- ball valve
- pneumatic ball
- central
- valve
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Abstract
The utility model discloses a pneumatic ball valve for hypervelocity wind-tunnel throat. When the pneumatic ball valve is opened, the central through holes of the left end cover, the ball core and the right end cover are axisymmetric profile channels which are in smooth transition with the profile of the throat and are part of the profile of the throat. The pneumatic ball valve can quickly cut off the throat, and prevent the driving gas from scouring the sensor; the driving gas and the test gas can be effectively separated, and the driving gas can be reused. The pneumatic ball valve has the advantages of integrity, high machining precision and good consistency with the molded surface of the throat of the ultra-high speed wind tunnel.
Description
Technical Field
The utility model belongs to the technical field of the hypervelocity wind tunnel test, concretely relates to pneumatic ball valve is used to hypervelocity wind-tunnel throat.
Background
In the ultrahigh-speed wind tunnel test, after test gas passes through the throat, the pneumatic ball valve is adopted to quickly cut off the test gas on the channel, so that the test gas is prevented from scouring the test model and the sensor through the throat, the service life of the test sensor is prolonged, and the integrity of the model is kept. However, the conventional ultrahigh-speed wind tunnel adopts an integral throat design, and cannot prevent driving gas from scouring a test model and a sensor in a mode of quickly stopping on the throat, so that the development of a pneumatic ball valve special for the ultrahigh-speed wind tunnel throat is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a pneumatic ball valve is used to hypervelocity wind-tunnel throat is provided.
The utility model discloses a pneumatic ball valve for a throat of an ultrahigh speed wind tunnel, which comprises a left end cover, a valve seat, a supporting plate, a valve body component, a packing sealing component, a valve rod, a ball core and a right end cover;
a left end cover: the left end cover of the pneumatic ball valve is internally provided with a central through hole I;
valve seat: a seal for the core;
a support plate: for supporting the core;
a valve body assembly: a body portion of a pneumatic ball valve;
packing seal assembly: a seal for sealing between the valve body and the valve stem;
valve stem: the ball core is driven to rotate, so that the opening and closing functions are realized;
a ball core: the inner part is provided with a central through hole II;
a right end cover: the right end cover of the ball valve is internally provided with a central through hole III;
when the pneumatic ball valve is in an open state, the central through hole I of the left end cover, the central through hole II of the ball core and the central through hole III of the right end cover are communicated;
the method is characterized in that: in the open state of the pneumatic ball valve, the central through hole I of the left end cover, the central through hole II of the ball core and the central through hole III of the right end cover are communicated with an axisymmetric profile channel in smooth transition, and the axisymmetric profile channel and the throat profile of the ultra-high speed wind tunnel are in smooth transition and are part of the throat profile of the ultra-high speed wind tunnel.
The closing time of the pneumatic ball valve is less than 100 ms.
The processing precision of the axisymmetric molded surface channel is within the IT7 precision grade, and the surface roughness is less than or equal to 0.8.
The positioning precision of the ball core when being opened is less than or equal to 5 mu m.
In production the utility model discloses a during pneumatic ball valve is used to hypervelocity wind-tunnel throat, all the other production according to normal production flow except that left end lid, ball core, right-hand member lid all the other not trompils, the ball valve equipment back that finishes is in the open mode with the ball valve, then once processes the completion with left end lid, ball core, right-hand member lid according to required throat molded lines, need die the open mode lock of ball valve in the course of working, the ball core can not rotate. After the processing is finished, the pneumatic ball valve is connected with the rest part of the throat to assemble a whole pair of throats, the fast ball valve of the throat of the wind tunnel is in an open state before testing, and is closed in a delayed mode after a test signal is obtained through a sensor during the wind tunnel test, so that the function of rapidly stopping the throat after test gas passes through the throat is achieved.
The pneumatic ball valve for the throat of the ultra-high speed wind tunnel can quickly cut off the throat, and prevent the driving gas from scouring the sensor; the driving gas and the test gas can be effectively separated, and the driving gas can be reused.
The utility model discloses a pneumatic ball valve for hypervelocity wind-tunnel throat has the wholeness, and machining precision is high, and is good with hypervelocity wind-tunnel throat profile uniformity.
Drawings
Fig. 1 is a schematic structural view of the pneumatic ball valve for the throat of the ultra-high speed wind tunnel of the present invention.
In the figure, 1, a left end cover 2, a valve seat 3, a supporting plate 4, a valve body assembly 5, a packing seal assembly 6, a valve rod 7, a ball core 8 and a right end cover are arranged.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the pneumatic ball valve for the throat of the ultra-high speed wind tunnel of the present invention comprises a left end cover 1, a valve seat 2, a support plate 3, a valve body component 4, a packing seal component 5, a valve rod 6, a ball core 7 and a right end cover 8;
left end cap 1: the left end cover of the pneumatic ball valve is internally provided with a central through hole I;
valve seat 2: a seal for the core 7;
supporting plate 3: for supporting the core 7;
the valve body assembly 4: a body portion of a pneumatic ball valve;
packing seal assembly 5: a seal for sealing between the valve body and the valve stem;
valve stem 6: the ball core 7 is driven to rotate, so that the opening and closing functions are realized;
a ball core 7: the inner part is provided with a central through hole II;
right end cap 8: the right end cover of the ball valve is internally provided with a central through hole III;
when the pneumatic ball valve is in an open state, a central through hole I of the left end cover 1, a central through hole II of the ball core 7 and a central through hole III of the right end cover 8 are communicated;
in the open state of the pneumatic ball valve, the central through hole I of the left end cover 1, the central through hole II of the ball core 7 and the central through hole III of the right end cover 8 are communicated with an axisymmetric profile channel in smooth transition, and the axisymmetric profile channel and the throat profile of the ultra-high speed wind tunnel are in smooth transition and are part of the throat profile of the ultra-high speed wind tunnel.
The closing time of the pneumatic ball valve is less than 100 ms.
The processing precision of the axisymmetric molded surface channel is within the IT7 precision grade, and the surface roughness is less than or equal to 0.8.
The positioning precision of the ball core 7 when being opened is less than or equal to 5 mu m.
Example 1
The specific implementation steps of this embodiment are as follows:
a. according to the size of the throat of the ultra-high speed wind tunnel, a solid pneumatic ball valve I is processed in a matched mode;
b. the solid pneumatic ball valve I is in an open state and is fixed in the open state, and a solid pneumatic ball valve II is obtained;
c. mounting a solid pneumatic ball valve II on the throat of the ultra-high speed wind tunnel;
d. and processing the throat of the ultra-high speed wind tunnel according to a preset profile to obtain the pneumatic ball valve with the axisymmetric profile channel.
The above is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (4)
1. A pneumatic ball valve for a throat of an ultrahigh-speed wind tunnel comprises a left end cover (1), a valve seat (2), a supporting plate (3), a valve body assembly (4), a packing sealing assembly (5), a valve rod (6), a ball core (7) and a right end cover (8);
left end cap (1): the left end cover of the pneumatic ball valve is internally provided with a central through hole I;
valve seat (2): a seal for the core (7);
support plate (3): for supporting the core (7);
valve body assembly (4): a body portion of a pneumatic ball valve;
packing seal assembly (5): a seal for sealing between the valve body and the valve stem;
valve stem (6): the ball core (7) is driven to rotate, so that the opening and closing functions are realized;
core (7): the inner part is provided with a central through hole II;
right end cap (8): the right end cover of the ball valve is internally provided with a central through hole III;
when the pneumatic ball valve is in an open state, a central through hole I of the left end cover (1), a central through hole II of the ball core (7) and a central through hole III of the right end cover (8) are communicated;
the method is characterized in that: in the open state of the pneumatic ball valve, the central through hole I of the left end cover (1), the central through hole II of the ball core (7) and the central through hole III of the right end cover (8) are communicated smoothly-transiting axisymmetric profile channels, and the axisymmetric profile channels and the throat profile of the ultra-high speed wind tunnel are in smooth transition and are part of the throat profile of the ultra-high speed wind tunnel.
2. An ultra-high speed wind tunnel throat pneumatic ball valve according to claim 1, wherein the closing time of the pneumatic ball valve is less than 100 ms.
3. The pneumatic ball valve for the ultra-high speed wind tunnel throat according to claim 1, wherein the machining precision of the axisymmetric profile passage is within the IT7 precision class, and the surface roughness is less than or equal to 0.8.
4. An ultra-high speed wind tunnel throat pneumatic ball valve according to claim 1, characterized in that the positioning accuracy of the opening of the ball core (7) is less than or equal to 5 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921503996.2U CN210716063U (en) | 2019-09-10 | 2019-09-10 | Pneumatic ball valve for throat of ultrahigh-speed wind tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921503996.2U CN210716063U (en) | 2019-09-10 | 2019-09-10 | Pneumatic ball valve for throat of ultrahigh-speed wind tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210716063U true CN210716063U (en) | 2020-06-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921503996.2U Withdrawn - After Issue CN210716063U (en) | 2019-09-10 | 2019-09-10 | Pneumatic ball valve for throat of ultrahigh-speed wind tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210716063U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594440A (en) * | 2019-09-10 | 2019-12-20 | 中国空气动力研究与发展中心超高速空气动力研究所 | Pneumatic ball valve for throat of ultrahigh-speed wind tunnel and machining method of pneumatic ball valve |
-
2019
- 2019-09-10 CN CN201921503996.2U patent/CN210716063U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594440A (en) * | 2019-09-10 | 2019-12-20 | 中国空气动力研究与发展中心超高速空气动力研究所 | Pneumatic ball valve for throat of ultrahigh-speed wind tunnel and machining method of pneumatic ball valve |
| CN110594440B (en) * | 2019-09-10 | 2023-09-15 | 中国空气动力研究与发展中心超高速空气动力研究所 | Pneumatic ball valve for ultrahigh-speed wind tunnel throat and processing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200609 Effective date of abandoning: 20230915 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200609 Effective date of abandoning: 20230915 |