CN110686563B - Fragile cover stop structure suitable for high-pressure gas ejection test device - Google Patents

Fragile cover stop structure suitable for high-pressure gas ejection test device Download PDF

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Publication number
CN110686563B
CN110686563B CN201911081071.8A CN201911081071A CN110686563B CN 110686563 B CN110686563 B CN 110686563B CN 201911081071 A CN201911081071 A CN 201911081071A CN 110686563 B CN110686563 B CN 110686563B
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stop
stop structure
fragile cover
fragile
cover
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CN110686563A (en
Inventor
邓春
李玉龙
赵博文
党海燕
张志勇
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Beijing Institute of Specialized Machinery
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Beijing Institute of Specialized Machinery
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41BWEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B11/00Compressed-gas guns, e.g. air guns; Steam guns
    • F41B11/60Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M9/00Aerodynamic testing; Arrangements in or on wind tunnels

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Safety Valves (AREA)

Abstract

The invention relates to a fragile cover stop structure suitable for a high-pressure gas ejection test device, and belongs to the technical field of ejection. The invention provides a fragile cover stopping structure suitable for a high-pressure gas ejection test device, which has the advantages of simple structure and reliable work, and can effectively stop a flying-out fragile cover body and prevent the fragile cover body from impacting and even damaging an ejected object; the windward side of the stop rod is designed to be low in resistance, so that the fragile cover body is effectively stopped, and meanwhile, the smooth flowing of high-pressure gas in the stop structure is not hindered.

Description

Fragile cover stop structure suitable for high-pressure gas ejection test device
Technical Field
The invention belongs to the technical field of launching, and particularly relates to a stop structure of a fragile cover, which is suitable for a high-pressure gas ejection test device.
Background
In the high-pressure gas ejection testing device, after the high-pressure gas storage chamber is inflated by an external gas source, the pressure of the high-pressure gas storage chamber rises, after a certain pressure value is reached, the fragile cover between the high-pressure gas storage chamber and the low-pressure chamber is automatically broken, the high-pressure gas is released to enter the low-pressure chamber, and a moving object moves under the action of the high-pressure gas, so that the aim of giving a certain movement speed to the ejected object is fulfilled. After the frangible cover is broken, the body structure of the frangible cover can move upwards at a high speed under the action of high-pressure gas, and can impact an ejected object and even damage the ejected object; accordingly, it is desirable to design the frangible cap stop structure to prevent damage to the ejected object caused by the impact of the frangible cap body structure against the ejected object.
Disclosure of Invention
Technical problem to be solved
The technical problem to be solved by the invention is as follows: how to design a stop structure of the fragile cover suitable for the high-pressure gas ejection test device, the brake of the fragile cover body is realized, and the object to be ejected is prevented from being impacted and even damaged by the structure of the fragile cover body.
(II) technical scheme
In order to solve the technical problem, the invention provides a fragile cover stop structure suitable for a high-pressure gas ejection test device, which comprises a lower flange 1, an upper flange 2, a stop structure body 3, a stop rod 4 and a reinforcing rib 5; the stop structure body 3 is a cylindrical structure with openings at two ends, the lower end surface is provided with the lower flange 1, the upper end surface is provided with the upper flange 2, the middle part is fixedly connected with the stop rod 4, and the stop rod 4 is positioned on the inner wall surface of the stop structure body 3; the stop rod 4 is used for colliding with the fragile cover body after the fragile cover body flies out for a certain distance, so that the fragile cover body is stopped, and meanwhile, the impact force is transmitted to the lower flange 1 through the stop structure body 3 and the reinforcing ribs 5, so that the stop of the fragile cover is realized; the stop rod 4 is formed by intersecting a plurality of strip-shaped rods at the same angle at intervals in the circumferential direction, and the intersection point of the plurality of strip-shaped rods is the center of a circle on the bottom surface of the stop structure body 3; the lower flange 1 and the upper flange 2 are installation interfaces of a fragile cover stop structure, wherein the lower flange 1 is used for being connected with a high-pressure air storage chamber, and the upper flange 2 is used for being connected with a switching device; the reinforcing ribs 5 are arranged at equal intervals in the circumferential direction on the outer wall surface of the stop structure body 3 and are used for reinforcing the stop structure body 3 and transmitting force generated in the collision process of the fragile cover body and the stop rod 4 to the lower flange 1.
Preferably, a mounting interface of the sealing ring is left on the lower flange 1.
Preferably, a mounting interface of the sealing ring is left on the upper flange 2.
Preferably, a sealing ring is mounted on the lower flange 1.
Preferably, a sealing ring is mounted on the upper flange 2.
Preferably, the stop rod 4 is composed of three elongated rods which are circumferentially spaced and intersect at the same angle.
Preferably, the stopping rod 4 has a structure like a Chinese character mi.
The invention also provides a method for realizing braking on the fragile cover body by using the fragile cover stopping structure, which comprises the following steps: when the high-pressure gas pressure of high-pressure gas receiver reaches the opening pressure of breakable lid, breakable lid breaks, and breakable lid body flies out under high-pressure gas's effect, and breakable lid body flies out the certain distance back, collides with stop lever 4, and stop lever 4 makes breakable lid body locking, and simultaneously, stop lever 4 passes through stop structure body 3 and strengthening rib 5, conducts the impact to flange 1 down to the realization is to the locking of breakable lid.
(III) advantageous effects
The invention provides a fragile cover stopping structure suitable for a high-pressure gas ejection test device, which has the advantages of simple structure and reliable work, and can effectively stop a flying-out fragile cover body and prevent the fragile cover body from impacting and even damaging an ejected object; the windward side of the stop rod is designed to be low in resistance, so that the fragile cover body is effectively stopped, and meanwhile, the smooth flowing of high-pressure gas in the stop structure is not hindered.
Drawings
FIG. 1 is a schematic view of a stop structure of a frangible cover suitable for use in a high pressure gas ejection test apparatus according to the present invention;
fig. 2 is a schematic view of the stopping principle of the stopping structure of the frangible cover suitable for the high-pressure gas ejection test device.
Wherein: 1-lower flange, 2-upper flange, 3-stop structure body, 4-stop rod, 5-reinforcing rib.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
As shown in fig. 1, the invention provides a fragile cover stop structure suitable for a high-pressure gas ejection test device, which comprises a lower flange 1, an upper flange 2, a stop structure body 3, a stop rod 4 and a reinforcing rib 5; the stop structure body 3 is a cylindrical structure with openings at two ends, the lower end surface is provided with the lower flange 1, the upper end surface is provided with the upper flange 2, the middle part is fixedly connected with the stop rod 4, and the stop rod 4 is positioned on the inner wall surface of the stop structure body 3; the stop rod 4 is used for colliding with the fragile cover body after the fragile cover body flies out for a certain distance, so that the fragile cover body is stopped, and meanwhile, the impact force is transmitted to the lower flange 1 through the stop structure body 3 and the reinforcing ribs 5, so that the stop of the fragile cover is realized; the stop rod 4 is formed by intersecting a plurality of strip-shaped rods, the intersection point of the strip-shaped rods is the center of a circle of the bottom surface of the stop structure body 3, and the low resistance design of the windward surface of the stop rod 4 can effectively stop the fragile cover body and simultaneously can not prevent high-pressure gas from smoothly flowing in the stop structure; the lower flange 1 and the upper flange 2 are mounting interfaces of a fragile cover stop structure, and mounting interfaces of sealing rings are respectively reserved on the lower flange 1 and the upper flange 2 so as to ensure the airtightness of the connection part, wherein the lower flange 1 is used for being connected with a high-pressure air storage chamber, and the upper flange 2 is used for being connected with a switching device; the reinforcing ribs 5 are arranged at equal intervals in the circumferential direction on the outer wall surface of the stop structure body 3 and are used for reinforcing the stop structure body 3 and transmitting force generated in the collision process of the fragile cover body and the stop rod 4 to the lower flange 1.
When the stop structure is installed, the lower flange 1 is installed at the upper end of the high-pressure air storage chamber. When the stop structure is used, when the high-pressure gas pressure of the high-pressure gas storage chamber reaches the opening pressure of the fragile cover, the fragile cover is broken, the fragile cover body flies out under the action of the high-pressure gas, the fragile cover body flies out for a certain distance and collides with the stop rod 4, the stop rod 4 stops the fragile cover body, and meanwhile, the stop rod 4 transmits the impact force to the lower flange 1 through the stop structure body 3 and the reinforcing rib 5, so that the stop of the fragile cover is realized.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (8)

1. A fragile cover stop structure suitable for a high-pressure gas ejection test device is characterized by comprising a lower flange (1), an upper flange (2), a stop structure body (3), a stop rod (4) and a reinforcing rib (5); the stop structure body (3) is of a cylindrical structure with openings at two ends, the lower end face of the stop structure body is provided with the lower flange (1), the upper end face of the stop structure body is provided with the upper flange (2), the middle part of the stop structure body is fixedly connected with the stop rod (4), and the stop rod (4) is positioned on the inner wall face of the stop structure body (3); the stop rod (4) is used for colliding with the fragile cover body after the fragile cover body flies out for a certain distance, so that the fragile cover body is stopped, and meanwhile, the impact force is transmitted to the lower flange (1) through the stop structure body (3) and the reinforcing ribs (5), so that the fragile cover is stopped; the stop rod (4) is formed by intersecting a plurality of strip-shaped rods at the same interval in the circumferential direction at the same angle, and the intersection point of the strip-shaped rods is the center of a circle of the bottom surface of the stop structure body (3); the lower flange (1) and the upper flange (2) are installation interfaces of a fragile cover stop structure, wherein the lower flange (1) is used for being connected with a high-pressure air storage chamber, and the upper flange (2) is used for being connected with a switching device; the reinforcing ribs (5) are arranged on the outer wall surface of the stop structure body (3) at equal intervals in the circumferential direction and are used for reinforcing the stop structure body (3) and transmitting force generated in the collision process of the fragile cover body and the stop rod (4) to the lower flange (1).
2. The frangible cover stop structure according to claim 1, wherein a mounting interface for a gasket is left on the lower flange (1).
3. The frangible cover stop structure of claim 1, wherein a gasket mounting interface is left on the upper flange (2).
4. The frangible cover stop according to claim 2, wherein a gasket is mounted on the lower flange (1).
5. The frangible cover stop structure of claim 3, wherein a gasket is mounted on the upper flange (2).
6. The stopper structure of a frangible cap according to claim 3 wherein the stop bar (4) is comprised of three elongated bars circumferentially spaced at equal angular intersections.
7. The frangible cover stop structure according to claim 3, wherein the stop bar (4) is of a m-shaped configuration.
8. A method of arresting a frangible cover body using a frangible cover stop according to any one of claims 1 to 7, comprising the steps of: when the high-pressure gas pressure of the high-pressure gas storage chamber reaches the opening pressure of the fragile cover, the fragile cover is broken, the fragile cover body flies out under the action of the high-pressure gas, the fragile cover body collides with the stop rod (4) after flying out for a certain distance, the stop rod (4) stops the fragile cover body, and meanwhile, the stop rod (4) transmits the impact force to the lower flange (1) through the stop structure body (3) and the reinforcing rib (5), so that the stop of the fragile cover is realized.
CN201911081071.8A 2019-11-07 2019-11-07 Fragile cover stop structure suitable for high-pressure gas ejection test device Active CN110686563B (en)

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CN201911081071.8A CN110686563B (en) 2019-11-07 2019-11-07 Fragile cover stop structure suitable for high-pressure gas ejection test device

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CN110686563B true CN110686563B (en) 2022-03-29

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2813065Y (en) * 2005-08-01 2006-09-06 广州东誉工业设备有限公司 Adsorbent filling device
CN104237022A (en) * 2014-09-17 2014-12-24 南京航空航天大学 Two-stage series-connection type launching simulation test device for composite fragile cover and simulation method
CN204442738U (en) * 2015-03-25 2015-07-01 遵义金翔冶金设备制造安装有限公司 Gas bubble screen shell
CN206619985U (en) * 2017-02-22 2017-11-07 美明德(昆山)机械设备有限公司 A kind of electric motor end cap
CN207816097U (en) * 2017-11-20 2018-09-04 四川航天系统工程研究所 A kind of novel frangible end cap improving reverse pressure-bearing ability

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2813065Y (en) * 2005-08-01 2006-09-06 广州东誉工业设备有限公司 Adsorbent filling device
CN104237022A (en) * 2014-09-17 2014-12-24 南京航空航天大学 Two-stage series-connection type launching simulation test device for composite fragile cover and simulation method
CN204442738U (en) * 2015-03-25 2015-07-01 遵义金翔冶金设备制造安装有限公司 Gas bubble screen shell
CN206619985U (en) * 2017-02-22 2017-11-07 美明德(昆山)机械设备有限公司 A kind of electric motor end cap
CN207816097U (en) * 2017-11-20 2018-09-04 四川航天系统工程研究所 A kind of novel frangible end cap improving reverse pressure-bearing ability

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