CN211234153U - Closed high-precision long-delay actuating mechanism - Google Patents
Closed high-precision long-delay actuating mechanism Download PDFInfo
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- CN211234153U CN211234153U CN201922356126.3U CN201922356126U CN211234153U CN 211234153 U CN211234153 U CN 211234153U CN 201922356126 U CN201922356126 U CN 201922356126U CN 211234153 U CN211234153 U CN 211234153U
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Abstract
The utility model discloses a closed high accuracy long time delay actuates mechanism, which comprises a housin, casing one end is sealed through the cap, and the other end passes through the cover piece and seals, the one end that the cap was connected to the casing is the installation department, and the striking fire cap is installed to the installation department, and is equipped with the gasket between striking fire cap and cap, from striking fire cap to cover piece in the casing, is equipped with little cigarette ignition powder in proper order, delays the body, actuates medicament and cover piece, little cigarette ignition powder is pressed at delay body input end, actuates the medicament dress and is pressed at delay body output end, and little cigarette ignition powder and striking fire cap interval 8mm ~ 12mm form the round pin and explode the chamber, actuate medicament and cover piece contact. The utility model discloses at striking cap top installation gasket, under the striking energy, can guarantee to strike sparks the reliability and can prevent again that striking cap is punctured to realize the sealing of whole mechanism, adaptability is high, especially under conditions such as wet heat, low temperature low pressure, its delay time and actuating performance all are difficult for receiving the influence.
Description
Technical Field
The utility model relates to a delay device especially relates to a closed high accuracy long time delay actuation mechanism.
Background
At present, the fire delay actuating mechanism is widely applied to working initiating explosive devices such as an actuator, a parachute cord cutter and the like, and the traditional typical fire delay actuating mechanism has a plurality of problems.
For example, firstly, the delay time is often controlled to be less than 5s, the delay precision of high-second delay is difficult to control, and the second fluctuation degree is large particularly in the fully-closed time; secondly, the actuation medicament and the delay medicament are not designed in a full-sealed manner, so that the environmental adaptability is poor, and particularly, the delay time and the actuation performance are influenced under the conditions of damp heat, low temperature and low pressure and the like.
Disclosure of Invention
An object of the utility model is to provide a solve above-mentioned problem, the delay time is longer, and the precision is controlled easily, does not receive the closed high accuracy long delay time that condition influences such as damp heat, low temperature low pressure to actuate the mechanism.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a closed high-precision long-delay actuating mechanism comprises a hollow circular tube-shaped shell, one end of the shell is sealed through a shell cover, the other end of the shell is sealed through a cover sheet, the outer wall of one end, connected with the shell cover, of the shell cover sequentially enlarges towards the direction of the shell cover to form a circular truncated cone-shaped installation part, the large end of the installation part is matched and sealed with the shell, a cylindrical through hole is formed in the installation part, the cylindrical through hole and the shell are coaxially arranged, the inner diameter of the cylindrical through hole is larger than that of the shell, an impact fire cap is installed in the cylindrical through hole, a gasket is arranged between the impact fire cap and the shell cover, the gasket is fixedly connected with the shell cover through an adhesive;
a micro-smoke ignition powder, a delay body, an actuating medicament and a cover plate are sequentially arranged in the shell from the impact fire cap to the cover plate;
the micro-smoke ignition powder is loaded at the input end of the delay body, the actuating agent is loaded at the output end of the delay body, the interval between the micro-smoke ignition powder and the impact fire cap is 8-12 mm to form a pin explosion cavity, and the actuating agent is in contact with the cover plate.
Preferably, the method comprises the following steps: the gasket is red copper T3M with a thickness of 0.3 and the impact energy is 1.2J.
Preferably, the method comprises the following steps: the actuating agent comprises a transition ignition powder layer and a main powder filling layer, and the transition ignition powder is positioned between the delay body and the main powder filling layer.
Preferably, the method comprises the following steps: the delay time of the delay body is 10s +/-1 s.
The utility model discloses a theory of operation does: the ignition powder is ignited by striking the fire cap, the ignition powder ignites the delay body, the main charge is ignited by the transitional ignition powder after the delay body is burnt, the bottom sealing mechanism is opened by actuating the gas generated by the agent, and the high-temperature high-pressure gas is released to do work in the next step.
The utility model discloses in, delay composition in delay element is tungsten system or molybdenum system delay composition prescription of independently developing, and the delay composition prescription is as follows:
tungsten-based retardant: 20 to 40 percent of tungsten powder; 40 to 80 percent of barium chromate; 5 to 20 percent of potassium perchlorate.
The mixing mode of the delay powder is dry mixing, which is different from the traditional delay powder mixing mode.
The mixing method comprises the following steps: 20-100 mesh screen; the number of sieving and mixing is 5-20.
The utility model discloses a sealed design to dry helium is revealed the inspection to delay element spare as the medium, is (1.01 +/-0.1) × 10 at the pressure differential5The maximum leakage rate is not more than 5 × 10 under Pa-7Pa·m3/s。
The diameter of the flux core of the delay element is 3mm, and the problems of misfire, misfire and the like of the delay agent are further solved on the premise of ensuring the precision of the delay element.
Compared with the prior art, the utility model has the advantages of:
(1) the novel structure is adopted, wherein two ends of the shell are sealed, the gasket and the cover plate are sealed in a mode of adopting an adhesive and closing up, the whole structure is in a full-sealing design, the product has high adaptability, and particularly under the conditions of damp heat, low temperature and low air pressure and the like, the delay time and the actuation performance are not easily influenced.
(2) The utility model discloses reserve round pin and explode the chamber, at striking fire cap top installation thickness 0.3 mm's red copper gasket, striking fire cap can guarantee to fire the reliability and can prevent again that striking fire cap from being punctured under 1.2J's striking energy like this to realize whole mechanism's sealed.
(3) The utility model discloses can use under-55 deg.C 71 deg.C environment, delay time control is in 10s 1s, and the output of delay body can be according to service behavior pressure equipment ignition powder, propellant powder and explosive etc. and the commonality is high.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a shell cover; 2. a gasket; 3. striking the fire cap; 4. a housing; 5. a micro-smoke ignition powder; 6. a delay element; 7. transitional ignition powder; 8. a main charge; 9. and (7) covering a sheet.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1: referring to fig. 1, a closed high-precision long-delay actuating mechanism comprises a hollow circular tube-shaped shell 4, one end of the shell 4 is sealed by a shell cover 1, the other end of the shell is sealed by a cover plate 9, the outer wall of one end, connected with the shell cover 1, of the shell 4 is sequentially enlarged towards the shell cover 1 to form a circular truncated cone-shaped installation part, the large end of the installation part is matched and sealed with the shell 4, a cylindrical through hole is formed in the installation part, the cylindrical through hole is coaxially arranged with the shell 4, the inner diameter of the cylindrical through hole is larger than that of the shell 4, an impact fire cap 3 is installed in the cylindrical through hole, a gasket 2 is arranged between the impact fire cap 3 and the shell cover 1, the gasket 2 is fixedly connected with the shell cover 1 through an adhesive, and the;
a micro-smoke ignition powder 5, a delay body 6, an actuating medicament and a cover plate 9 are sequentially arranged in the shell 4 from the impact fire cap 3 to the cover plate 9;
wherein, the little cigarette ignition powder 5 dress is pressed at delay body 6 input, actuates the medicament dress and presses at delay body 6 output, and little cigarette ignition powder 5 and striking cap 3 interval 8mm ~ 12mm form the round pin and explode the chamber, actuates the medicament and contacts with cover plate 9.
In this embodiment, the gasket 2 is red copper T3M with a thickness of 0.3, and the impact energy is 1.2J. The actuating agent comprises a transition ignition powder 7 layer and a main charge 8 layer, and the transition ignition powder 7 is positioned between the delay body 6 and the main charge 8 layer. The delay time of the delay body 6 is 10s +/-1 s.
In this embodiment, the delay element 6 may be a commercially available product, or may be a tungsten-based or molybdenum-based delay composition formula developed by us, and the delay composition formula is as follows:
tungsten-based retardant: 20 to 40 percent of tungsten powder; 40 to 80 percent of barium chromate; 5 to 20 percent of potassium perchlorate.
The mixing mode of the delay powder is dry mixing, which is different from the traditional delay powder mixing mode.
The mixing method comprises the following steps: 20-100 mesh screen; the number of sieving and mixing is 5-20.
The core diameter of the delay element 6 is 3 mm.
The preparation method of the utility model is as follows: a shell cover 1, a gasket 2, an impact fire cap 3, a shell 4, a micro-smoke ignition powder 5, a delay body 6, a transition ignition powder 7, a main charge 8 and a cover plate 9 are prepared. Firstly, the delay element 6 is loaded with lead and drawn, and then is pressed and installed in the shell 4 after being drawn, the input end of the delay element is pressed and installed with the micro-smoke ignition powder 5, and the output end of the delay element is pressed and installed with the transitional ignition powder 7 and the main charge 8. Then the impact fire cap 3, the gasket 2, the shell cover 1 and the cover plate 9 are arranged in the container, and sealing is carried out by means of adhesive and closing in.
During the use, trigger striking fire cap 3 through mechanical striking, striking fire cap 3 top installation thickness 0.3 mm's red copper gasket 2, under 1.2J's impact energy, can guarantee to strike sparks the reliability and can prevent to strike fire cap 3 and be punctured again to realize the leakproofness of whole mechanism. When the ignition cap 3 is struck to ignite the smoke ignition powder, the smoke ignition powder ignites the delay body 6, the main charge 8 is ignited through the transition ignition powder 7 after the delay body 6 is burnt, the main charge 8 generates gas to open the bottom sealing mechanism, namely the end 9 of the cover plate, and the high-temperature and high-pressure gas is released to do work in the next step.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. The utility model provides a closed high accuracy long delay time delay actuates mechanism, includes hollow pipe form casing, casing one end is sealed through the cap, and the other end passes through the cover plate and seals its characterized in that: the outer wall of one end, connected with the shell cover, of the shell body is sequentially enlarged towards the shell cover direction to form a truncated cone-shaped installation part, the large end of the installation part is matched and sealed with the shell body, a cylindrical through hole is formed in the installation part, the cylindrical through hole is coaxially arranged with the shell body, the inner diameter of the cylindrical through hole is larger than that of the shell body, an impact fire cap is installed in the cylindrical through hole, a gasket is arranged between the impact fire cap and the shell cover, the gasket is fixedly connected with the shell cover through an adhesive, and the inner wall of the cylindrical through hole is fixed;
a micro-smoke ignition powder, a delay body, an actuating medicament and a cover plate are sequentially arranged in the shell from the impact fire cap to the cover plate;
the micro-smoke ignition powder is loaded at the input end of the delay body, the actuating agent is loaded at the output end of the delay body, the interval between the micro-smoke ignition powder and the impact fire cap is 8-12 mm to form a pin explosion cavity, and the actuating agent is in contact with the cover plate.
2. The closed high-precision long-delay time-delay actuating mechanism of claim 1, wherein: the gasket is red copper T3M with a thickness of 0.3 and the impact energy is 1.2J.
3. The closed high-precision long-delay time-delay actuating mechanism of claim 1, wherein: the actuating agent comprises a transition ignition powder layer and a main powder filling layer, and the transition ignition powder is positioned between the delay body and the main powder filling layer.
4. The closed high-precision long-delay time-delay actuating mechanism of claim 1, wherein: the delay time of the delay body is 10s +/-1 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922356126.3U CN211234153U (en) | 2019-12-25 | 2019-12-25 | Closed high-precision long-delay actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922356126.3U CN211234153U (en) | 2019-12-25 | 2019-12-25 | Closed high-precision long-delay actuating mechanism |
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| Publication Number | Publication Date |
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| CN211234153U true CN211234153U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922356126.3U Active CN211234153U (en) | 2019-12-25 | 2019-12-25 | Closed high-precision long-delay actuating mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624078A (en) * | 2021-08-06 | 2021-11-09 | 南京理工大学 | Long-delay acupuncture explosion element with flush input end face for fuse |
| CN114754633A (en) * | 2022-05-25 | 2022-07-15 | 西安北方庆华机电有限公司 | Non-electric delay pushing device of pulling type |
-
2019
- 2019-12-25 CN CN201922356126.3U patent/CN211234153U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624078A (en) * | 2021-08-06 | 2021-11-09 | 南京理工大学 | Long-delay acupuncture explosion element with flush input end face for fuse |
| CN113624078B (en) * | 2021-08-06 | 2023-01-13 | 南京理工大学 | Long-delay acupuncture explosion element with flush input end face for fuze |
| CN114754633A (en) * | 2022-05-25 | 2022-07-15 | 西安北方庆华机电有限公司 | Non-electric delay pushing device of pulling type |
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