阅读说明：本技术 一种高精度多通道同步作用性火工装置 (High-precision multichannel synchronous action type initiating explosive device ) 是由 彭斌 李慧芬 魏婧姝 王明 卢烨 刘浩 于 2021-10-09 设计创作，主要内容包括：本发明公开了一种高精度多通道同步作用性火工装置,属于航天航空器分离技术及布撒器战斗部开舱技术领域,包括依次连接的电爆管(3)、起爆盒(1)和多路传爆组件(2)；本发明通过对传爆序列的改进、导爆索的选用参数的确定及传爆组件传爆长度的控制,大幅提升多通道火工装置所有输出端作用的同步性；本发明能够将传统多通道传爆火工装置同步作用的时间差值范围由不大于1ms缩减至不大于1μs,从而有效提高航天航空器分离及布撒器战斗部开舱的可靠性。(The invention discloses a high-precision multichannel synchronous action type initiating explosive device, which belongs to the technical field of aerospace craft separation technology and spreader warhead cabin opening, and comprises an electric detonation tube (3), a detonation box (1) and a multi-path booster assembly (2) which are sequentially connected; the method greatly improves the synchronism of the actions of all output ends of the multi-channel initiating explosive device by improving the detonation sequence, determining the selected parameters of the detonating cord and controlling the detonating length of the detonating assembly; the invention can reduce the time difference range of the synchronous action of the traditional multi-channel booster explosive device from not more than 1ms to not more than 1 mu s, thereby effectively improving the reliability of the separation of the space craft and the opening of the warhead of the spreader.)

1. The utility model provides a high accuracy multichannel synchronization nature priming system which characterized in that: the detonation device comprises an electric detonator (3), a detonation box (1) and a booster component (2) which are sequentially connected, wherein the booster component (2) is provided with at least three paths; wherein the content of the first and second substances,

the detonation box (1) comprises an upper shell (11), a bundling disc (13) is arranged in the upper shell (11), a high explosive column (18) is arranged in a detonation cavity formed by the upper shell (11) and the bundling disc (13), and the upper end of the high explosive column (18) is connected with the electric detonation tube (3); the upper shell (11) is also internally provided with a bundling sleeve (14), a guide block (15) and a fixed disc (16) in sequence;

every way booster assembly (2) all includes input connecting piece (24), silver core (25), detonating cord medicine core (22), detonating cord (23) and output (21) that set gradually, input connecting piece (24) stretch into fixed disk (16) are connected with detonating box (1), just the detonating terminal surface of silver core (25) closely pastes and is circumference evenly distributed in detonating column (18) diameter coverage.

2. A high precision multi-channel synchronous working pyrotechnic device as claimed in claim 1 wherein: the height of the explosive column (18) is more than or equal to 4 mm.

3. A high precision multi-channel synchronous working pyrotechnic device as claimed in claim 1 wherein: the output end (21) is a Taian explosive column pressed by ultra-fine Taian with the granularity less than 7.2 mu m, and the bottom end face of the Taian explosive column is tightly attached to the output end face of the silver core (25).

4. A high precision multi-channel synchronous working pyrotechnic device as claimed in claim 3 wherein: the pressed density of the Taian medicinal column is 1.5g/cm³～1.55g/cm³Within this range, the density of the detonating cord core (22) is greater than the Taian compressed density.

5. A high precision multi-channel synchronous working pyrotechnic device as claimed in claim 1 wherein: the basic detonation velocity of the detonating cord (23) is more than 6000 m/s.

6. A high accuracy multi-channel synchronous working initiating explosive device according to claim 5, characterized in that: the maximum detonation velocity difference range of all detonating cords used by each channel of the same high-precision multi-channel synchronous action initiating explosive device is less than or equal to 30 mm/s.

7. A high precision multi-channel synchronous working pyrotechnic device as claimed in claim 1 wherein: the length of the input end connecting piece (24) is L1, the distance from the detonation end face of the silver core (25) to the output end face of the output end (21) is L2, after the detonation transfer assembly (2) is connected with the detonation box (1), the length of L1 of each path of detonation transfer assembly (2) tends to be consistent, and the length of L2 of each path of detonation transfer assembly (2) tends to be consistent.

8. A high precision multi-channel synchronous working pyrotechnic device as claimed in claim 7 wherein: explosion propagation length of each path of explosion propagation assembly: l1+ L2 is less than or equal to 1206 mm.

9. A high precision multi-channel synchronous working pyrotechnic device as claimed in claim 8 wherein: the total length error value range of the explosion propagation lengths L1 and L2 of the multipath explosion propagation component is less than or equal to 1 mm.

Technical Field

The invention relates to the technical field of aerospace craft separation technology and dispenser warhead cabin opening, in particular to a high-precision multichannel synchronous acting initiating explosive device.

Background

The difference value of the action time of each output end of the traditional multi-channel initiating explosive device is usually within 1ms, and the increasingly improved precision requirements of similar technologies such as aerospace vehicle separation and opening of a warhead of a spreader can not be gradually met, so that the reliability of the overall system is reduced.

Disclosure of Invention

The invention aims to provide a high-precision multichannel synchronous working initiating device to solve the problems.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a high-precision multichannel synchronous action initiating explosive device comprises an electric detonator, an initiation box and an explosion transfer component which are sequentially connected, wherein the explosion transfer component is provided with at least three paths; wherein the content of the first and second substances,

the detonation box comprises an upper shell, a cluster disc is arranged in the upper shell, a high explosive column is arranged in a detonation cavity formed by the upper shell and the cluster disc, and the upper end of the high explosive column is connected with the electric detonation tube; the upper shell is internally provided with a bundling sleeve, a guide block and a fixed disc in sequence;

each path of booster component all includes input connecting piece, silver core, detonating cord medicine core, detonating cord and the output that sets gradually, the input connecting piece stretches into the fixed disk is connected with the detonating box, just the detonating terminal surface of silver core closely pastes with high explosive column bottom surface and is circumference evenly distributed in high explosive column diameter coverage.

The booster sequence is different from the traditional booster sequence in that the design of expanding the primary explosive (sensitive medicament) between the explosive core of the detonating cord at the output end and the output end (a Taian explosive column) is cancelled, and the product safety is improved while the different factors causing the booster difference of the multipath booster components are reduced.

As a preferred technical scheme: the height of the explosive column is more than or equal to 4 mm.

As a preferred technical scheme: the output end is a Taian explosive column which is formed by pressing superfine Taian with the granularity less than 7.2 mu m, and the bottom end face of the Taian explosive column is tightly attached to the output end face of the silver core.

As a further preferable technical scheme: the pressed density of the Taian grains is 1.5g/cm³～1.55g/cm³Within the range, the density of the explosive core of the detonating cord is higher than the refined Tai' an compressed density and has corresponding detonation velocity. The time difference caused by detonation growth of the initiating explosive in each output end can be eliminated, so that the output power is ensured, and the difference of the initiation time t3 of the output ends of all the booster assemblies tends to 0.

As a preferred technical scheme: the basic detonation velocity of the detonating cord is preferably more than 6700 m/s. I.e., meets the QJ 1951A-98 standard.

As a preferred technical scheme: the detonation velocity difference value range of all detonating cords used by each channel of the same high-precision multi-channel synchronous action initiating explosive device is preferably less than 30 m/s. Because under the condition that the maximum difference value of the detonation propagation lengths of the detonation propagation assemblies of all channels is 0, the larger the maximum detonation velocity difference value is, the shorter the detonation propagation length of the detonation propagation assembly of each channel is, the range of the maximum detonation velocity difference value can be properly expanded according to the actual required detonation length of the initiating explosive device by referring to the following table 1 so as to facilitate the selection of the detonating cord.

TABLE 1 comparison table for difference value range between detonation propagation length of detonation propagation component of each channel and maximum detonation velocity of detonating cord

Note: the basic detonation velocity was at a minimum of 6000 m/s.

As a preferred technical scheme: the end face of the connecting piece at the input end of the explosion transfer assembly to the output end is an external part of the explosion transfer assembly, and the length of the explosion transfer assembly is L1; the detonation end face of the silver core to the end face of the input end connecting piece is a detonation transfer assembly bundling part, the distance after bundling is L2, after the detonation transfer assembly is connected with the detonation box, the length of L1 of each path of detonation transfer assembly tends to be consistent, the length of L2 of each path of detonation transfer assembly tends to be consistent, namely the detonation transfer length (L1+ L2) of each path of detonation transfer assembly tends to be consistent.

The explosion propagation length (total length of L1 and L2) of each path of explosion propagation assembly is less than or equal to 1206 mm. Under the condition that the maximum difference value of the detonation propagation lengths of the detonation propagation assemblies of all channels is 0 and the maximum detonation velocity difference value is less than or equal to 30mm/s, the longer the detonation propagation length is, the larger the basic detonation velocity of the required detonating cord is, and then the detonation velocity range of the detonating cord can be determined according to the actual required detonation propagation length reference table 2 of the initiating explosive device.

TABLE 2 comparison table for detonation propagation length of detonation propagation assembly of each channel and detonation velocity range of detonating cord

The maximum detonation velocity difference is 30 m/s.

As a further preferable technical scheme: the error value range of the booster length (the total length of L1 and L2) is preferably less than or equal to 1 mm. The invention greatly improves the synchronism of all output end functions of the multi-channel initiating explosive device by improving the detonation sequence, determining the selected parameters of the detonating cord and controlling the detonation distance of the detonating assembly.

Because the maximum detonation velocity difference value of the detonation propagation length of each channel detonation component is 0, and the basic detonation velocity is 6000m/s, the smaller the maximum detonation length difference value is, the smaller the detonation time difference value is, the error (the maximum value is not more than 6mm) allowed by the detonation propagation length of the detonation propagation component can be determined according to the maximum detonation velocity difference value reference table 3 of the detonating cord used by selecting multiple paths of detonation propagation components, so as to be beneficial to the actual assembly of an initiating explosive device.

TABLE 3 EXPLOSION-TRANSMITTING TIME ERROR COMPARATIVE TABLE FOR EXPLOSION-TRANSMITTING SYSTEM

Note: the basic detonation velocity is 6000m/s at the minimum value, and the maximum detonation velocity difference value is 0 m/s.

Parameters of an explosion wire used for producing and assembling the initiating explosive device need to be matched with the explosion propagation length of the explosion propagation component, and the parameters with larger margin are preferentially selected according to theoretical calculation data. The parameters are selected by referring to a data selection table (table 4, table 5 and table 6) based on the basic detonation velocity of the detonating cord.

TABLE 4 detonating cord parameter selection watch (6000m/s)

TABLE 4 (CONTINUOUS) EXPLOSION-GUARD PARAMETERS (6000m/s)

TABLE 4 (CONTINUOUS) EXPLOSION-GUARD PARAMETERS (6000m/s)

TABLE 4 (CONTINUOUS) EXPLOSION-GUARD PARAMETERS (6000m/s)

TABLE 5 detonating cord parameter selection watch (6700m/s)

TABLE 5 (continuation) detonating cord parameter selection Table (6700m/s)

TABLE 5 (continuation) detonating cord parameter selection Table (6700m/s)

TABLE 5 (continuation) detonating cord parameter selection Table (6700m/s)

TABLE 5 (continuation) detonating cord parameter selection Table (6700m/s)

TABLE 5 (continuation) detonating cord parameter selection Table (6700m/s)

TABLE 6 detonating cord parameter selecting watch (7500m/s)

TABLE 6 (continuation) detonating cord parameter selecting table (7500m/s)

TABLE 6 (continuation) detonating cord parameter selecting table (7500m/s)

TABLE 6 (continuation) detonating cord parameter selection Table (6700m/s)

TABLE 6 (continuation) detonating cord parameter selection Table (6700m/s)

TABLE 6 (continuation) detonating cord parameter selection Table (6700m/s)

TABLE 6 (continuation) detonating cord parameter selection Table (6700m/s)

TABLE 6 (continuation) detonating cord parameter selection Table (6700m/s)

Compared with the prior art, the invention has the advantages that: the invention can reduce the time difference range of the synchronous action of the traditional multi-channel booster explosive device from not more than 1ms to not more than 1 mu s, thereby effectively improving the reliability of the separation of the space craft and the opening of the warhead of the spreader.

Drawings

FIG. 1 is a side view of example 1 of the present invention;

FIG. 2 is a top view of example 1 of the present invention;

fig. 3 is a schematic view of the internal structure of the detonation box in embodiment 1 of the invention;

fig. 4 is a schematic structural view of an explosion propagating assembly according to embodiment 1 of the present invention;

fig. 5 is a schematic view of the end surface distribution of the silver core of the bundling portion of the booster assembly in embodiment 1 of the present invention.

In the figure: 1. a detonation box; 11. an upper housing; 12. a lower housing; 13. a bundling plate; 14. a bundling sleeve; 15. a guide block; 16. fixing the disc; 17. a transfer block; 18. explosive columns of high explosive; 19. filling a glue layer; 2. an explosion propagation assembly; 21. an output end; 22. a detonating cord drug core; 23. a detonating cord; 24. an input end connector; 25. a silver core; 3. and (4) electrically exploding the tube.

Detailed Description

The invention will be further explained with reference to the drawings.

Example 1:

referring to fig. 1 and 2, a high-precision multichannel synchronous action initiating explosive device comprises an electric detonator 3, an initiation box 1 and a booster assembly 2 which are connected in sequence, wherein in the embodiment, fourteen paths of the booster assembly 2 are arranged, as shown in fig. 5; wherein the content of the first and second substances,

the structure of the detonation box 1 is shown in fig. 3, and comprises an upper shell 11 and a lower shell 12, wherein a bundling disc 13 is arranged in the upper shell 11, a high explosive column 18 is arranged in a detonation cavity formed by the upper shell 11 and the bundling disc 13, in the embodiment, the height of the high explosive column 18 is 5mm, and the upper end of the high explosive column 18 is connected with the electric detonation tube 3; the upper shell 11 is also internally provided with a bundling sleeve 14, a guide block 15, a fixed disc 16 and a connecting block 17 in sequence;

each path of the booster component 2 is structurally shown in fig. 4, and comprises an input end connecting piece 24, a silver core 25, an explosion fuse flux core 22, an explosion fuse 23 and an output end 21 which are sequentially arranged, wherein the input end connecting piece 24 extends into the fixed disk 16 to be connected with the detonation box 1, and the detonation end surface of the silver core 25 is closely attached to the bottom surface of the high explosive column 18 and is circumferentially and uniformly distributed in the diameter coverage range of the high explosive column 18;

namely, the detonation end of the booster train uses the cluster disc 13 and the cluster sleeve 14 to carry out standard constraint on the silver cores 25 at the cluster part of the fourteen-path booster assembly, so that the detonation end faces of the silver cores 25 of all the booster assemblies are uniformly distributed on the end face of the cluster disc 13 in a circumferential manner, as shown in fig. 5;

in this embodiment: the output end 21 is a Taian explosive column pressed by ultra-fine Taian with the granularity less than 7.2 mu m, the bottom end face of the Taian explosive column is tightly attached to the output end face of the silver core 25, and the density of the Taian explosive column is 1.5g/cm³～1.55g/cm³Within the range, the density of the detonating cord core 22 should be increased to a too safe compressed density and have a corresponding detonation velocity, so that the output end 21 can be reliably detonated by the detonating cord 23;

in this embodiment: the basic detonation velocity of the detonating cord 23 is more than 6700m/s, the detonation velocities of the detonating cords 23 can be different, but the detonation velocity difference value range of all detonating cords is less than 30 m/s;

in this embodiment, as shown in fig. 4: the length of the input end connecting piece 24, namely the length of the bundling position, is L2, the distance from the detonation end face of the silver core 25 to the output end face of the output end 21, namely the length of the external position, is L1, after the explosion-propagating component 2 is connected with the detonation box 1, the lengths of L1 of the fourteen paths of explosion-propagating components 2 tend to be consistent, the length of the bundling position L2 of each path of explosion-propagating component 2 tends to be consistent after bundling, the total length error of L1 and L2 of each path of explosion-propagating component is less than or equal to 1mm, and the explosion-propagating length of the explosion-propagating component 2 is 380mm on the basis.

Specifically, after the length of the external part L1 of the booster assembly 2 is assembled at the output end 21, the booster length of the detonating cord 23 is adjusted by the input end connecting piece 24, so that the lengths of the external parts L1 of multiple paths of detonating cords arranged on the same device tend to be consistent; the multipath explosion-propagating component 2 is fixed on the fixed disk 16 through the transfer block 17 and is uniformly distributed in the circumference, the silver core 25 at the bundling position of the multipath explosion-propagating component is tightly attached to the guide curved surface of the guide block 15, extends to the bundling disk 13 and is fixed by the potting adhesive (namely the potting adhesive layer 19 in fig. 2) after being regulated and restricted by the bundling disk 13 and the bundling sleeve 14, so that the lengths of the bundling position L2 of the multipath explosion-propagating component 2 tend to be consistent.

The inventor proves through a large number of experiments that: the synchronism of the multi-channel synchronous initiating explosive device is mainly influenced by the detonation time of the input end, the detonation propagation time and the detonation time of the output end of each path of detonation propagation component 2.

Therefore, the working principle of the high-precision multi-channel synchronous working initiating explosive device manufactured by the embodiment is as follows: when the electric detonator 3 acts, the high explosive column 18 is detonated, because the bottom surface of the high explosive column 18 is tightly attached to the detonation end surfaces of the silver cores 25 of all the booster components 2, detonation waves generated by the high explosive column 18 are simultaneously transmitted to the detonation end surfaces of the silver cores 25 of all the booster components 2 which are uniformly distributed on the circumference and contact with the bottom surface of the high explosive column 18 under the condition of no attenuation, the detonation energy received by the input ends of all the booster components 2 tends to be consistent, and the detonation time t is₁The difference tends to be 0;

after all the booster assemblies 2 are detonated, because the booster distances and the detonation velocities of all the booster assemblies 2 are within the controlled range values, the booster time t₂(detonation distance/detonation velocity) difference less than 1 μ s (see table 7 for details);

the design of using sensitive initiating explosive to carry out relay explosion expansion is cancelled at the output end 21, and explosive columns pressed by ultra-fine Taian are directly initiated by explosive cores of detonating cords (the density of the Taian explosive columns is required to be 1.5 g/cm)³～1.55g/cm³Within the range, the density of the detonating cord explosive core 22 is higher than the refined safety pressing density and has corresponding detonation velocity, the time difference caused by the detonation growth of the initiating explosive in each output end is eliminated, the output power is ensured, and the detonation time t of the output ends 21 of all the detonating assemblies 2 is ensured₃The difference tends to be 0;

when the detonation time of the input ends 21, the detonation propagation time and the detonation time of the output ends of all the detonation components 2 of the initiating explosive device are controlled, the action synchronism of the multi-path output ends of the initiating explosive device is controlled, and the maximum difference value of the action time is controlled to be 1 mu s (t)₁+t₂+t₃) Within.

TABLE 7 EXPLOSION-TRANSMITTING TIME POLARITY COMPARISON TABLE FOR EXPLOSION-TRANSMITTING COMPONENT