CN115614489A - Transient-motion pneumatic device capable of being repeatedly tested and application method - Google Patents
Transient-motion pneumatic device capable of being repeatedly tested and application method Download PDFInfo
- Publication number
- CN115614489A CN115614489A CN202211619634.6A CN202211619634A CN115614489A CN 115614489 A CN115614489 A CN 115614489A CN 202211619634 A CN202211619634 A CN 202211619634A CN 115614489 A CN115614489 A CN 115614489A
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- cavity
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- valve
- piston cylinder
- transient
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Classifications
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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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
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/124—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated
- F16K31/1245—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated with more than one valve
Abstract
The invention discloses a transient-motion pneumatic device capable of being tested repeatedly and an application method thereof, relating to the field of wind tunnel tests and comprising a piston and a piston cylinder, wherein the piston cylinder is connected with a quick valve through a telescopic rod, and the lower end of the piston cylinder is provided with a first cavity and a second cavity at intervals through the end surface of the telescopic rod; the longitudinal section of the piston is configured into a U-shaped structure, and a spacing ring is arranged on the periphery of the piston; an annular step is arranged in the piston cylinder; a third cavity and a fourth cavity are obtained between the piston and the annular step and between the piston cylinder and the piston through spacer rings; the piston cylinder is provided with an annular groove so as to limit a fifth cavity between the annular groove and the open end of the piston; the piston is internally provided with a sixth cavity which is communicated with the third cavity through a vent hole. The invention provides an instantaneous-displacement pneumatic device capable of being tested repeatedly and an application method thereof, which adopt a differential pressure type piston instantaneous-displacement structural technology to solve the problem of millisecond-level opening of a main valve of a temporary-flushing type wind tunnel of an energy storage type heater.
Description
Technical Field
The invention relates to the field of wind tunnel tests. More specifically, the invention relates to a reusable high-thrust transient-motion pneumatic device which can be used repeatedly, has a full-motion stroke reaching millisecond level, is applied to the field of equipment switches with harsh requirements on starting time, and particularly relates to a high-thrust transient-motion pneumatic device applied to repeatable testing of a hypersonic wind tunnel and an application method thereof.
Background
The hypersonic wind tunnel is an important ground simulation means in the aerospace field, plays an irreplaceable important role in aircraft development, and has the operation characteristics of high temperature, high pressure and high vacuum, and particularly has huge energy consumption in one-time test operation for a high Mach number operation state with total pressure not less than 100MPa, so that the requirement on the opening and closing of the wind tunnel is rapid opening and closing, safety and reliability in order to reduce invalid operation energy consumption and increase the effective operation time of the wind tunnel.
The hypersonic wind tunnel generally adopts a valve to realize the opening and closing of a system, and the opening and closing time is in the second level. How to realize millisecond-level starting needs to solve the problem of quick and reliable starting and stopping of the device under the coupling working conditions of high temperature, high pressure and high vacuum. At present, known open and close modes such as gunpowder explosion mode, electronic pulse mode, hydraulic stretch breaking and the like are reported in public, and the open and close modes can realize equipment millisecond-level opening, but have the defects of complex operation, low operation efficiency, poor opening and closing time repeatability and the like.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.
In order to achieve the purposes and other advantages of the invention, the invention provides a transient pneumatic device capable of being tested repeatedly, which comprises a piston and a piston cylinder which are matched, wherein the piston cylinder is connected with a quick valve body through a telescopic rod, and the lower end of the piston cylinder is separated by the end surface of the telescopic rod to obtain a first cavity and a second cavity;
the longitudinal section of the piston is configured into a U-shaped structure, and a spacing ring is arranged on the periphery of the piston at a position matched with the inner side of the piston cylinder;
the piston cylinder is internally provided with a hollow annular step which limits the descending position of the piston;
a third cavity and a fourth cavity are obtained between the piston and the annular step and between the piston cylinder and the piston through spacer rings;
the piston cylinder is provided with an annular groove at a position matched with the open end of the piston so as to limit a fifth cavity between the annular groove and the open end of the piston;
a sixth cavity is arranged inside the piston and is communicated with the third cavity through an air hole;
the first cavity, the second cavity, the fourth cavity and the fifth cavity are respectively provided with a first cavity inflation port, a second cavity inflation port, a fourth cavity inflation port and a fifth cavity inflation port which are matched with each other;
the damping cylinder is connected to the fifth cavity, the first electromagnetic relief valve is arranged on the fourth cavity, and the first cavity is communicated with the energy storage tank through the second electromagnetic relief valve;
the vent area of the piston on the third cavity is larger than the vent area of the second cavity.
Preferably, the position where the piston is matched with the third cavity is configured to be in a bevel structure.
The application method of the transient pneumatic device capable of being tested repeatedly comprises the following steps that after a piston cylinder is connected with a quick valve through a telescopic rod, the valve opening mode of the transient pneumatic device is configured to comprise:
after the piston cylinder passes through the telescopic link and is connected with the quick valve, the open valve mode of the transient pneumatic means is configured to include:
s1, setting before opening a valve;
s2, executing the valve opening operation after the step S1;
the valve-closing manner of the transient pneumatic device is configured to coincide with the setting of S1 in the valve-opening manner;
wherein, in S1, the setting before the valve is opened is configured to include:
s10, sequentially closing a fifth cavity inflation port, a first electromagnetic relief valve and opening a fourth cavity inflation port to a design pressure so as to push the piston to a closed position;
s11, closing the second electromagnetic relief valve, opening a first cavity inflation inlet, raising the pressure to the design pressure through a second cavity inflation inlet to enable the telescopic rod to push a main valve rod of the quick valve and a valve clack of the quick valve to move downwards, and attaching the main valve rod to a quick valve body to complete sealing;
in S2, the valve opening operation is configured to include:
s20, simultaneously opening a second electromagnetic release valve and a first electromagnetic release valve to enable gas with set pressure in the energy storage tank to enter a first cavity, and further forming opening thrust in the same direction with the pressure of an energy storage heater below a valve clack of the quick valve;
s21, when the first electromagnetic relief valve releases pressure until the fourth cavity is balanced with the second cavity, the telescopic rod starts to move upwards and is limited by the fact that the relief area of the piston on the third cavity is larger than that of the second cavity, compressed air in the second cavity can be rapidly released, and the effect of millisecond-level movement is achieved.
The invention at least comprises the following beneficial effects: the invention solves the defects of low application efficiency, poor reusability and the like of the previous driving modes such as gunpowder explosion, electronic pulse, hydraulic breaking and the like, realizes the characteristic of repeated use for many times, has high on-off time repetition precision and has no easily damaged part; the invention adopts a differential pressure type piston instantaneous displacement structure technology, and solves the problem of millisecond-level opening of the main valve of the temporary impact type wind tunnel of the energy storage type heater.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a repeatable transient pneumatic device according to an embodiment of the invention;
the quick valve comprises a quick valve body 1, a valve clack 2, a main valve rod 3, a valve rod connector 4, a telescopic rod 5, a first cavity 6, a first cavity 7, a first cavity inflation inlet 8, a second cavity 9, a third cavity 10, a piston 11, a fourth cavity 12, a first electromagnetic release valve 13, a damping cylinder 13, a fifth cavity 14, a sixth cavity 15, a fifth cavity inflation inlet 16, a fourth cavity inflation inlet 17, a second cavity inflation inlet 18, an energy storage tank 19, a second electromagnetic release valve 20, a spacing ring 21, an annular step 22 and an air hole 23.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
It should be noted that in the description of the present invention, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like, should be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected between two elements.
Examples
A transient pneumatic device capable of being tested repeatedly comprises a piston 10 and a piston cylinder which are matched, wherein the piston cylinder is connected with a quick valve body 1 through a telescopic rod 5, and a first cavity 6 and a second cavity 8 are obtained at the lower end of the piston cylinder through the end face of the telescopic rod at intervals;
the longitudinal section of the piston is configured into a U-shaped structure, and a spacer ring 21 is arranged on the periphery of the piston at a position matched with the inner side of the piston cylinder;
the piston cylinder is internally provided with a hollow annular step 22 which limits the descending position of the piston;
a third cavity 9 and a fourth cavity 11 are obtained between the piston and the annular step and between the piston cylinder and the piston through spacing rings;
the piston cylinder is provided with a ring groove at the position matched with the open end of the piston, so that a fifth cavity 14 is limited between the ring groove and the open end of the piston;
a sixth cavity 15 is formed inside the piston and is communicated with the third cavity 9 through an air hole 23;
the first cavity, the second cavity, the fourth cavity and the fifth cavity are respectively provided with a first cavity inflation port 7, a second cavity inflation port 18, a fourth cavity inflation port 17 and a fifth cavity inflation port 16 which are matched with each other;
the damping cylinder 13 is connected to the fifth cavity, the first electromagnetic relief valve 12 is arranged on the fourth cavity, and the first cavity is communicated with the energy storage tank 19 through the second electromagnetic relief valve 20;
the discharge area of the piston on the third cavity is larger than that of the second cavity;
the position where the piston is matched with the third cavity is configured to be in a bevel structure.
A valve opening mode:
before the valve is opened, firstly, a fifth cavity inflation inlet 16, a first electromagnetic relief valve 12 and a fourth cavity inflation inlet 17 are sequentially closed, a piston 10 is pushed to a closed position, a second electromagnetic relief valve 20 is closed, a first cavity inflation inlet 7 is opened, the pressure is raised to the design pressure through a second cavity inflation inlet 18, so that a telescopic rod 5 pushes a valve rod connector 4 and a main valve rod 3 of a quick valve, and a valve clack 2 arranged at one end of the main valve rod 3 is tightly attached to a quick valve body 1 to form a sealing effect;
when the valve is opened, the second electromagnetic relief valve 20 and the first electromagnetic relief valve 12 are opened simultaneously, so that the set pressure gas in the energy storage tank 19 enters the first cavity 6 and further forms equidirectional opening thrust with the pressure of the energy storage heater below the valve clack 2, when the first electromagnetic relief valve 12 releases the pressure to the fourth cavity 11 and is balanced with the second cavity, the telescopic rod 5 starts to move upwards, and because the release area of the piston 10 on the third cavity 9 is larger than that of the second cavity 8, the compressed air in the second cavity 8 can be released rapidly, and the effect of millisecond-level movement is achieved.
Closing the valve: the content before opening the valve is repeatedly developed.
The transient pneumatic device is applied to a certain wind tunnel valve device, the test medium is nitrogen, the diameter of a channel is 15mm, the working pressure is 120MPa, the valve can be opened within 50ms, and the time opening error of each time is within 5 ms. The transient pneumatic device realizes accurate and rapid opening and closing control of the wind tunnel under the working condition of high total pressure.
The invention solves the defects of low application efficiency, poor reusability and the like of the previous gunpowder explosion type, electronic pulse type, hydraulic breaking and other driving modes, realizes the characteristics of repeated use and accurate control of opening time, and has no easily damaged part;
the invention adopts a differential pressure type piston instantaneous displacement structure technology, and solves the problem of millisecond-level opening of the main valve of the temporary impact type wind tunnel of the energy storage type heater;
the invention pushes the valve clack 2 and the main valve rod 3 of the quick valve to move quickly at the bottom of the valve clack 2 of the quick valve through the double actions of the medium pressure of the energy storage heater and the energy storage tank 19, thereby accelerating the pushing of the gas medium in the second cavity 8 to discharge quickly and achieving the aim of opening the quick valve in millisecond level.
The above scheme is merely illustrative of a preferred example, and is not limiting. When the invention is implemented, appropriate replacement and/or modification can be carried out according to the requirements of users.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
While embodiments of the invention have been disclosed above, it is not intended that they be limited to the applications set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (3)
1. A transient pneumatic device capable of being tested repeatedly comprises a piston and a piston cylinder which are matched, wherein the piston cylinder is connected with a quick valve body through a telescopic rod;
the longitudinal section of the piston is configured into a U-shaped structure, and a spacer ring is arranged on the periphery of the piston at a position matched with the inner side of the piston cylinder;
the piston cylinder is internally provided with a hollow annular step which limits the downward position of the piston;
a third cavity and a fourth cavity are obtained between the piston and the annular step and between the piston cylinder and the piston through spacer rings;
the piston cylinder is provided with an annular groove at a position matched with the open end of the piston so as to limit a fifth cavity between the annular groove and the open end of the piston;
a sixth cavity is arranged inside the piston and is communicated with the third cavity through an air hole;
the first cavity, the second cavity, the fourth cavity and the fifth cavity are respectively provided with a first cavity inflation port, a second cavity inflation port, a fourth cavity inflation port and a fifth cavity inflation port which are matched with each other;
the damping cylinder is connected to the fifth cavity, the first electromagnetic relief valve is arranged on the fourth cavity, and the first cavity is communicated with the energy storage tank through the second electromagnetic relief valve;
the vent area of the piston on the third cavity is larger than the vent area of the second cavity.
2. The retested transient pneumatic device of claim 1, wherein the mating location of the piston and the third chamber is configured as a ramp configuration.
3. A method of using a retested transient pneumatic device as claimed in any one of claims 1-2 wherein after the piston cylinder is connected to the quick valve by the telescoping rod, the transient pneumatic device is configured in an open valve manner comprising:
s1, setting before opening a valve;
s2, executing the valve opening operation after the step S1;
the valve-closing manner of the transient pneumatic device is configured to coincide with the setting of S1 in the valve-opening manner;
wherein, in S1, the setting before the valve is opened is configured to include:
s10, sequentially closing a fifth cavity inflation port, a first electromagnetic relief valve and opening a fourth cavity inflation port to a design pressure so as to push the piston to a closed position;
s11, closing the second electromagnetic relief valve, opening a first cavity inflation inlet, raising the pressure to the design pressure through a second cavity inflation inlet to enable the telescopic rod to push a main valve rod of the quick valve and a valve clack of the quick valve to move downwards, and attaching the main valve rod to a quick valve body to complete sealing;
in S2, the valve opening operation is configured to include:
s20, simultaneously opening a second electromagnetic release valve and a first electromagnetic release valve to enable gas with set pressure in the energy storage tank to enter a first cavity, and further forming opening thrust in the same direction with the pressure of an energy storage heater below a valve clack of the quick valve;
s21, when the first electromagnetic relief valve releases pressure until the fourth cavity is balanced with the second cavity, the telescopic rod starts to move upwards and is limited by the fact that the relief area of the piston on the third cavity is larger than that of the second cavity, compressed air in the second cavity can be rapidly released, and the effect of millisecond-level movement is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211619634.6A CN115614489B (en) | 2022-12-16 | 2022-12-16 | Transient-motion pneumatic device capable of being tested repeatedly and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211619634.6A CN115614489B (en) | 2022-12-16 | 2022-12-16 | Transient-motion pneumatic device capable of being tested repeatedly and application method |
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| Publication Number | Publication Date |
|---|---|
| CN115614489A true CN115614489A (en) | 2023-01-17 |
| CN115614489B CN115614489B (en) | 2023-03-14 |
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| CN202211619634.6A Active CN115614489B (en) | 2022-12-16 | 2022-12-16 | Transient-motion pneumatic device capable of being tested repeatedly and application method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117386836A (en) * | 2023-12-13 | 2024-01-12 | 中国空气动力研究与发展中心超高速空气动力研究所 | Quick response coaxial valve suitable for pulse wind tunnel and application method thereof |
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| KR101655683B1 (en) * | 2015-06-04 | 2016-09-22 | 임병철 | Flow rate meter and test device for inlet metering valve using the same |
| CN106594294A (en) * | 2016-12-08 | 2017-04-26 | 中国航天空气动力技术研究院 | Air pressure type rapid switching valve |
| CN107387777A (en) * | 2017-08-16 | 2017-11-24 | 浙江海洋大学 | Corrosion-resistant stop valve |
| CN109058565A (en) * | 2018-11-05 | 2018-12-21 | 成都华科阀门制造有限公司 | A kind of novel quick valve with unloaded equilibrium function |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1431244A (en) * | 1973-06-21 | 1976-04-07 | Atwood Morrill Co | Shut-off valve and pistons |
| FR2309958A2 (en) * | 1975-04-30 | 1976-11-26 | Kraftwerk Union Ag | NUCLEAR POWER PLANT WITH QUICK-CLOSING VALVE MOUNTED IN THE LIVE STEAM DUCT |
| AU2004218726A1 (en) * | 1999-05-21 | 2004-11-04 | M-I L.L.C. | Fluid flow and pressure control system and method |
| US6325101B1 (en) * | 1999-07-14 | 2001-12-04 | Festo Ag & Co. | Choke valve |
| CN1472125A (en) * | 2002-05-24 | 2004-02-04 | ��Τ����˹ | Air unloader |
| JP2004150959A (en) * | 2002-10-30 | 2004-05-27 | Mitsubishi Heavy Ind Ltd | Opening and closing valve and wind tunnel equipment equipped with opening and closing valve |
| KR101655683B1 (en) * | 2015-06-04 | 2016-09-22 | 임병철 | Flow rate meter and test device for inlet metering valve using the same |
| CN105651482A (en) * | 2015-12-29 | 2016-06-08 | 中国航天空气动力技术研究院 | Control system and method of stop valve and total pressure regulating valve in hypersonic wind tunnel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117386836A (en) * | 2023-12-13 | 2024-01-12 | 中国空气动力研究与发展中心超高速空气动力研究所 | Quick response coaxial valve suitable for pulse wind tunnel and application method thereof |
| CN117386836B (en) * | 2023-12-13 | 2024-02-02 | 中国空气动力研究与发展中心超高速空气动力研究所 | Quick response coaxial valve suitable for pulse wind tunnel and application method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115614489B (en) | 2023-03-14 |
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