阅读说明：本技术 一种高钝感小型化电*** (High insensitive miniaturized electric detonator ) 是由 刘铭 李永锋 张建刚 王运卯 谭屏 李小龙 于 2019-11-27 设计创作，主要内容包括：本发明涉及一种高钝感小型化电起爆器,旨在解决现有技术中存在的电起爆器不能满足“1.5A2.25W5min不发火”高钝感要求的问题。本发明包括壳体、两个极针、玻璃管、电桥、绝缘环；壳体内部从左至右依次安装有密封组件、玻璃管、陶瓷片、绝缘环及挡片；玻璃管为两个,且以壳体中轴线对称设置；密封组件与两个玻璃管左端面之间分别设有一个静电通道；两个极针的一端先穿过密封组件,再分别穿过两个静电通道和两个玻璃管,最后穿过陶瓷片与电桥连接；电桥紧贴于陶瓷片上；绝缘环、陶瓷片及挡片之间形成第一空腔,第一空腔内填装始发装药；始发装药包括质量分数为35％～50％的锆粉和65％～50％的高氯酸钾；壳体内位于挡片的右侧设置有第二空腔,第二空腔内填装输出装药。(The invention relates to a high-insensitivity miniaturized electric detonator, and aims to solve the problem that the electric detonator in the prior art cannot meet the high-insensitivity requirement of 'no ignition in 1.5 A2.25W5min'. The invention comprises a shell, two pole needles, a glass tube, an electric bridge and an insulating ring; a sealing component, a glass tube, a ceramic wafer, an insulating ring and a baffle are sequentially arranged in the shell from left to right; the number of the glass tubes is two, and the glass tubes are symmetrically arranged by the central axis of the shell; an electrostatic channel is respectively arranged between the sealing component and the left end faces of the two glass tubes; one end of each of the two polar pins firstly passes through the sealing assembly, then respectively passes through the two electrostatic channels and the two glass tubes, and finally passes through the ceramic plate to be connected with the electric bridge; the bridge is tightly attached to the ceramic chip; a first cavity is formed among the insulating ring, the ceramic plate and the baffle plate, and initial charge is filled in the first cavity; the initial charge comprises 35 to 50 mass percent of zirconium powder and 65 to 50 mass percent of potassium perchlorate; a second cavity is formed in the shell and located on the right side of the separation blade, and output charge is filled in the second cavity.)

1. The utility model provides a miniaturized electric initiating explosive device of high insensitive which characterized in that: comprises a shell (1), two pole needles (2), a glass tube (3), an electric bridge (4) and an insulating ring (5);

a sealing component, a glass tube (3), a ceramic plate (8), an insulating ring (5) and a baffle plate (9) are sequentially arranged in the shell (1) from left to right;

the number of the glass tubes (3) is two, and the glass tubes are symmetrically arranged along the central axis of the shell (1);

an electrostatic channel (10) is respectively arranged between the sealing component and the left end faces of the two glass tubes (3);

one end of each of the two polar needles (2) firstly passes through the sealing assembly, then respectively passes through the two electrostatic channels (10) and the two glass tubes (3), and finally passes through the ceramic plate (8) to be connected with the electric bridge (4);

the electric bridge (4) is tightly attached to the ceramic plate (8);

a first cavity (6) is formed among the insulating ring (5), the ceramic plate (8) and the baffle plate (9), and initial charge is filled in the first cavity (6);

the initial charge comprises 35-50% of zirconium powder and 65-50% of potassium perchlorate;

a second cavity (7) is formed in the shell (1) and located on the right side of the blocking piece (9), and output charging powder is filled in the second cavity (7).

2. The miniaturized electrical detonator of claim 1 wherein: the sealing assembly comprises a rubber ring (11), a rubber pad (12) and a distributing plate (13) which are sequentially arranged in the shell (1) from left to right;

the distributing board (13) blocks the electrostatic channel (10).

3. A high insensitive miniaturized electrical detonator as claimed in claim 1 or 2, wherein:

the material of the electric bridge (4) is Cr20Ni 80.

4. A high insensitive miniaturized electrical detonator as claimed in claim 3 wherein:

the shell (1) is made of a high-temperature alloy GH 4169;

the glass tube (3) is made of iron-sealed glass TF-5.

5. The miniaturized electrical detonator of claim 4 wherein:

the left end of the shell (1) is provided with an electric jack (14), and the right end is provided with a medicament outlet (15);

the medicine outlet (15) is sealed by a U-shaped cover (16), the opening of the U-shaped cover (16) is towards the left, and the bottom of the U-shaped cover (16) seals the medicine outlet (15).

6. The miniaturized electrical detonator of claim 5 wherein:

the left end of the second cavity (7) is provided with an annular bulge (17) protruding towards the middle shaft of the shell (1);

the left side surface of the annular bulge (17) is tightly attached to the baffle plate (9).

7. The miniaturized electrical detonator of claim 6, wherein:

the rubber pad (12) and the distributing board (13) are bonded through a sealant (18).

8. The miniaturized electrical detonator of claim 7 wherein:

the baffle plate (9) is made of non-metal materials.

9. The miniaturized electrical detonator of claim 8 wherein:

three limiting keys (19) are uniformly arranged on the outer wall of the left end of the shell (1).

Technical Field

The invention relates to an initiator, in particular to a high-insensitive miniaturized electric initiator.

Background

The electric initiating explosive device is an electric initiating explosive device widely applied in the field of aerospace, outputs high-temperature and high-pressure gunpowder gas after receiving a specified electric signal, can be used for actuating an electric explosion valve and can also be used for igniting or detonating an initiating explosive device. The electric detonator has certain safety performance to ensure the service safety while ensuring the reliable work, and the insensitive initiating explosive device generally meets the requirement of 'no ignition for 1A1W5 min' in the current relevant professional standards, however, the high insensitive requirement of 'no ignition for 1.5A 2.25W5min' is generally provided in the current development of partial models, so that the current electric detonator products can not meet the requirement. Meanwhile, with the wide application of the electric detonator, higher requirements are provided for the sealing performance, the environmental adaptability and the like of the internal structure of the electric detonator.

Disclosure of Invention

The invention aims to solve the problem that the electric detonator in the prior art cannot meet the high-insensitivity requirement of '1.5 A2.25W5min no-ignition', and provides a high-insensitivity miniaturized electric detonator.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the invention relates to a high insensitive miniaturized electric detonator, which is characterized in that: comprises a shell, two pole needles, a glass tube, an electric bridge and an insulating ring;

a sealing component, a glass tube, a ceramic wafer, an insulating ring and a baffle are sequentially arranged in the shell from left to right;

the number of the glass tubes is two, and the two glass tubes are symmetrically arranged by using the central axis of the shell;

an electrostatic channel is respectively arranged between the sealing component and the left end faces of the two glass tubes;

one end of each of the two polar pins firstly passes through the sealing assembly, then respectively passes through the two electrostatic channels and the two glass tubes, and finally passes through the ceramic plate to be connected with the electric bridge;

the electric bridge is tightly attached to the ceramic chip;

a first cavity is formed among the insulating ring, the ceramic plate and the baffle plate, and initial charge is filled in the first cavity;

the initial charge comprises 35-50% of zirconium powder and 65-50% of potassium perchlorate;

a second cavity is formed in the shell and located on the right side of the separation blade, and output charging powder is filled in the second cavity.

Further, the sealing assembly comprises a rubber ring, a rubber pad and a distributing plate which are sequentially arranged in the shell from left to right;

the distributing board blocks the electrostatic channel.

Furthermore, the material of the bridge is Cr20Ni 80.

Further, the shell is made of a high-temperature alloy GH 4169;

the glass tube is made of iron-sealed glass TF-5.

Furthermore, the left end of the shell is provided with an electric jack, and the right end of the shell is provided with a medicament outlet;

the medicament outlet is blocked by the U-shaped cover, the opening of the U-shaped cover is towards the left, and the bottom of the U-shaped cover blocks the medicament outlet.

Furthermore, in order to complete the axial constraint of the parts and the medicament in the shell, the left end of the second cavity is provided with an annular bulge protruding towards the middle shaft of the shell;

the left side surface of the annular bulge is tightly attached to the baffle plate.

Furthermore, the rubber pad and the distributing board are bonded through sealant.

Further, the baffle plate is made of non-metal materials.

Furthermore, three limiting keys are uniformly arranged on the outer wall of the left end of the shell. And limiting by matching with an action object.

The invention has the beneficial effects that:

1. the invention is provided with a sealing component, an electrostatic channel, a glass tube, a ceramic chip, an insulating ring and a baffle sheet in turn from left to right in a shell; a first cavity is formed among the insulating ring, the ceramic plate and the baffle plate, and initial charge comprising 35-50% of zirconium powder and 65-50% of potassium perchlorate is filled in the first cavity; the initiating charge is a medicament with lower sensitivity, belongs to high-temperature-resistant ignition powder, has lower sensitivity compared with the conventional initiating charge, has the exothermic reaction temperature of 452.19 ℃, and is insensitive to static electricity, radio frequency, thunder and lightning and the like; then the contact area of the bridge and the ceramic material is increased in adaptability, so that the heat generated on the bridge is transmitted to the surrounding structure and space through the ceramic sheet in time under the action of specified current and reaches steady state balance, and the specified high insensitive requirement of no ignition for 1.5A2.25W5min is realized.

2. The electric bridge material of the invention selects Cr20Ni80 material with larger specific heat capacity and thermal conductivity coefficient, so that part of heat generated when current passes through the electric bridge is heated to the initial charge, and part of heat is radiated by the electric bridge, thereby ensuring that the electric initiator can reliably work while meeting the requirement of high insensitivity.

3. The shell is made of the high-temperature alloy GH4169, the glass tube is made of the iron-sealed glass TF-5, and the high-temperature alloy GH4169 and the iron-sealed glass TF-5 have different high-temperature expansion degrees, so that the glass tube and the shell are tightly connected through compression sealing, the structural strength and the sealing performance under the high-temperature condition are improved, the environment adaptability of damp and heat resistance, mould resistance and salt mist resistance is realized, and the purpose of miniaturization is achieved.

4. The left end of the shell is provided with the electric jack, the electric jack and the two pole pins form the electric connection plug together, the integrated design of the electric connection socket and the electric detonator is realized, the number of parts and the switching link of the firing circuit are reduced, and the shell is compact in structure, small in size and light in weight.

Drawings

Fig. 1 is a schematic structural diagram of a high insensitive miniaturized electrical detonator of the present invention.

In the figure, 1-shell, 2-pole needle, 3-glass tube, 4-electric bridge, 5-insulating ring, 6-first cavity, 7-second cavity, 8-ceramic piece, 9-baffle, 10-electrostatic channel, 11-rubber ring, 12-rubber pad, 13-line separating plate, 14-electric jack, 15-medicament outlet, 16-U-shaped cover, 17-annular bulge, 18-sealant and 19-limiting key.

Detailed Description

To make the objects, advantages and features of the present invention more apparent, a high insensitive and small-sized electric detonator according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following detailed description. It should be noted that: the drawings are in simplified form and are not to precise scale, the intention being solely for the convenience and clarity of illustrating embodiments of the invention; second, the structures shown in the drawings are often part of actual structures.

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The invention relates to a high insensitive miniaturized electric detonator, which comprises a shell 1, wherein the shell 1 is made of high-temperature alloy GH4169, and the high-temperature alloy GH4169 has the advantages of excellent sealing performance, high-temperature strength margin and the like; three limit keys 19 are evenly arranged on the outer wall of the left end of the shell 1. The left end of the shell 1 is provided with an electric jack 14, and the right end is provided with a medicament outlet 15; the medicine outlet 15 is blocked by a U-shaped cover 16, the opening of the U-shaped cover 16 is towards the left, and the bottom of the U-shaped cover 16 blocks the medicine outlet 15.

A sealing component, a glass tube 3, a ceramic plate 8, an insulating ring 5 and a baffle plate 9 are sequentially arranged in the shell 1 from left to right; the number of the glass tubes 3 is two, and the glass tubes are symmetrically arranged along the axis of the shell 1; the glass tube 3 is made of iron-sealed glass TF-5; the glass tube 3 and the shell 1 are tightly connected through heating expansion. The baffle plate 9 is made of non-metal material.

An electrostatic channel 10 is respectively arranged between the sealing component and the left end faces of the two glass tubes 3; one end of each of the two polar pins 2 firstly passes through the sealing assembly, then respectively passes through the two electrostatic channels 10 and the two glass tubes 3, and finally passes through the ceramic plate 8 to be connected with the bridge 4; the bridge 4 is clung to the ceramic plate 8; the material of the bridge 4 is Cr20Ni 80. The contact area of the electric bridge 4 and the ceramic plate 8 is increased in adaptability, so that the heat generated on the electric bridge 4 is transmitted to the surrounding structure and space through the ceramic plate 8 in time under the action of specified current and stable state balance is achieved;

a first cavity 6 is formed among the insulating ring 5, the ceramic plate 8 and the baffle plate 9, and the initial charge is filled in the first cavity 6; the initial charge comprises 35 to 50 mass percent of zirconium powder and 65 to 50 mass percent of potassium perchlorate; the initiating charge is a medicament with lower sensitivity, belongs to high-temperature-resistant ignition powder, has lower sensitivity compared with the conventional initiating charge, has the exothermic reaction temperature of 452.19 ℃, and is insensitive to static electricity, radio frequency, thunder and lightning and the like; both thermal stimulation and laser stimulation can be reliably ignited; the output energy is high; the combustion speed is fast, and the action time is short.

A second cavity 7 is arranged on the right side of the baffle plate 9 in the shell 1, and the output charge is filled in the second cavity 7. The left end of the second cavity 7 is provided with an annular bulge 17 protruding towards the middle shaft of the shell 1; the left side surface of the annular bulge 17 is tightly attached to the baffle plate 9.

Preferably, the sealing assembly comprises a rubber ring 11, a rubber pad 12 and a distributing plate 13 which are sequentially arranged in the shell 1 from left to right; the branching plate 13 blocks the electrostatic channel 10. The rubber pad 12 and the distributing board 13 are adhered by a sealant 18.

The invention relates to a high insensitive miniaturized electric detonator, which comprises the following working processes:

according to the invention, a specified current signal is introduced from the pole needle, and the current generates heat when passing through the bridge, so that the initial charge is ignited, the output charge is further ignited, and high-temperature and high-pressure gunpowder gas is generated. The invention adopts high-temperature alloy material suitable for sealing, an integral sealing structure and ceramic material with good heat-conducting property, and the invention adopts the initial charge consisting of 35-50% of zirconium powder and 65-50% of potassium perchlorate by mass fraction, and correspondingly increases the contact area of the electric bridge and the ceramic chip, ensures that the heat generated on the electric bridge is transmitted to the surrounding structure and space through the ceramic chip in time under the action of specified current and reaches steady state balance, thereby realizing the specified high insensitive requirement of no ignition for 1.5 A2.25W5min.