CN110594440A - Pneumatic ball valve for throat of ultrahigh-speed wind tunnel and machining method of pneumatic ball valve - Google Patents
Pneumatic ball valve for throat of ultrahigh-speed wind tunnel and machining method of pneumatic ball valve Download PDFInfo
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- CN110594440A CN110594440A CN201910851459.5A CN201910851459A CN110594440A CN 110594440 A CN110594440 A CN 110594440A CN 201910851459 A CN201910851459 A CN 201910851459A CN 110594440 A CN110594440 A CN 110594440A
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- ball valve
- pneumatic ball
- throat
- wind tunnel
- speed wind
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a pneumatic ball valve for a throat of an ultrahigh-speed wind tunnel and a processing method thereof. 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 machining method of the pneumatic ball valve comprises the following steps that a, a solid pneumatic ball valve I is machined according to the size of a throat of an ultrahigh-speed wind tunnel; b. the solid pneumatic ball valve I is in an open state and is fixed to obtain a solid pneumatic ball valve II; c. mounting a solid pneumatic ball valve II on the throat of the ultra-high speed wind tunnel; d. and integrally processing the pneumatic ball valve and the throat of the ultrahigh speed wind tunnel to obtain the pneumatic ball valve with the axisymmetric profile channel. 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 processing method of the pneumatic ball valve has the advantages of integrity, high processing precision and good consistency with the molded surface of the throat of the ultra-high speed wind tunnel.
Description
Technical Field
The invention belongs to the technical field of ultrahigh speed wind tunnel tests, and particularly relates to a pneumatic ball valve for a throat of an ultrahigh speed wind tunnel and a processing method thereof.
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.
Disclosure of Invention
The invention aims to solve a technical problem of providing a pneumatic ball valve for a throat of an ultrahigh-speed wind tunnel, and the invention aims to solve another technical problem of providing a processing method of the pneumatic ball valve for the throat of the ultrahigh-speed wind tunnel.
The pneumatic ball valve for the throat of the ultrahigh-speed wind tunnel comprises a left end cover, a valve seat, a supporting plate, a valve body assembly, a packing sealing assembly, 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.
The invention discloses a processing method of a pneumatic ball valve for a throat of an ultrahigh-speed wind tunnel, which comprises the following steps of:
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.
When the pneumatic ball valve for the throat of the ultra-high speed wind tunnel is produced, the rest parts except the left end cover, the ball core and the right end cover are not provided with holes, and are produced according to the normal production flow, after the ball valve is assembled, the ball valve is in an open state, then the left end cover, the ball core and the right end cover are processed at one time according to the required throat molded line, the open state of the ball valve needs to be locked in the processing process, and the ball core cannot 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 ultrahigh-speed wind tunnel can quickly cut off the throat, so that the sensor is prevented from being washed by driving gas; the driving gas and the test gas can be effectively separated, and the driving gas can be reused.
The processing method of the pneumatic ball valve for the throat of the ultra-high speed wind tunnel has the advantages of integrity, high processing precision and good consistency with the molded surface of the throat of the ultra-high speed wind tunnel.
Drawings
FIG. 1 is a schematic structural diagram of a pneumatic ball valve for a throat of an ultra-high speed wind tunnel according to 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 below with reference to the accompanying drawings and examples.
Example 1
As shown in FIG. 1, the pneumatic ball valve for the throat of the ultra-high speed wind tunnel comprises a left end cover 1, a valve seat 2, a supporting plate 3, a valve body component 4, a packing sealing 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.
The invention discloses a processing method of a pneumatic ball valve for a throat of an ultrahigh-speed wind tunnel, which comprises the following steps of:
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: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (5)
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.
5. A processing method of a pneumatic ball valve for a throat of an ultrahigh-speed wind tunnel is characterized by comprising the following steps of: the method comprises the following steps:
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910851459.5A CN110594440B (en) | 2019-09-10 | 2019-09-10 | Pneumatic ball valve for ultrahigh-speed wind tunnel throat and processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910851459.5A CN110594440B (en) | 2019-09-10 | 2019-09-10 | Pneumatic ball valve for ultrahigh-speed wind tunnel throat and processing method thereof |
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| Publication Number | Publication Date |
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| CN110594440A true CN110594440A (en) | 2019-12-20 |
| CN110594440B CN110594440B (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910851459.5A Active CN110594440B (en) | 2019-09-10 | 2019-09-10 | Pneumatic ball valve for ultrahigh-speed wind tunnel throat and processing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857732A (en) * | 2021-03-10 | 2021-05-28 | 中国空气动力研究与发展中心超高速空气动力研究所 | Method for quickly closing shock tunnel throat |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1177688A (en) * | 1996-08-27 | 1998-04-01 | 弗罗塞夫有限公司 | Plug valve assembly |
| US6185821B1 (en) * | 1998-11-30 | 2001-02-13 | Lei-Jui Wu | Practical forged flange-type ball valve fabrication method |
| CN103228966A (en) * | 2010-11-12 | 2013-07-31 | 里卡多·费雷罗 | Valve body for valve assembly and valve assembly including said valve body |
| CN205371758U (en) * | 2015-12-17 | 2016-07-06 | 广东华液动力科技有限公司 | Electromagnetic ball valve |
| CN205745405U (en) * | 2015-11-27 | 2016-11-30 | 中国空气动力研究与发展中心超高速空气动力研究所 | The quick ball valve of a kind of hard sealing |
| CN205978600U (en) * | 2016-08-12 | 2017-02-22 | 攀钢集团西昌钢钒有限公司 | Blast furnace raw coke oven gas diffuses oiling device of ball valve |
| CN108953654A (en) * | 2017-05-17 | 2018-12-07 | 约翰·格斯特国际有限公司 | Ball valve assembly |
| CN210716063U (en) * | 2019-09-10 | 2020-06-09 | 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 |
-
2019
- 2019-09-10 CN CN201910851459.5A patent/CN110594440B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1177688A (en) * | 1996-08-27 | 1998-04-01 | 弗罗塞夫有限公司 | Plug valve assembly |
| US6185821B1 (en) * | 1998-11-30 | 2001-02-13 | Lei-Jui Wu | Practical forged flange-type ball valve fabrication method |
| CN103228966A (en) * | 2010-11-12 | 2013-07-31 | 里卡多·费雷罗 | Valve body for valve assembly and valve assembly including said valve body |
| CN205745405U (en) * | 2015-11-27 | 2016-11-30 | 中国空气动力研究与发展中心超高速空气动力研究所 | The quick ball valve of a kind of hard sealing |
| CN205371758U (en) * | 2015-12-17 | 2016-07-06 | 广东华液动力科技有限公司 | Electromagnetic ball valve |
| CN205978600U (en) * | 2016-08-12 | 2017-02-22 | 攀钢集团西昌钢钒有限公司 | Blast furnace raw coke oven gas diffuses oiling device of ball valve |
| CN108953654A (en) * | 2017-05-17 | 2018-12-07 | 约翰·格斯特国际有限公司 | Ball valve assembly |
| CN210716063U (en) * | 2019-09-10 | 2020-06-09 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857732A (en) * | 2021-03-10 | 2021-05-28 | 中国空气动力研究与发展中心超高速空气动力研究所 | Method for quickly closing shock tunnel throat |
| CN112857732B (en) * | 2021-03-10 | 2022-04-12 | 中国空气动力研究与发展中心超高速空气动力研究所 | Method for quickly closing shock tunnel throat |
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| Publication number | Publication date |
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| CN110594440B (en) | 2023-09-15 |
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