A multi-channel release device of a topology

Abstract

The application discloses a kind of topological structure's multi-channel release device, including front stage structure, rear stage structure, internal actuating assembly, the inside of front stage structure is equipped with a front stage main channel and the several front stage subchannels being set around front stage main channel, the inside of rear stage structure is equipped with a rear stage main channel and the several rear stage subchannels being set around rear stage main channel, the actuating cavity body formed by the communication of rear stage main channel and front stage main channel is used to install internal actuating assembly and realize the connection unlocking of rear stage structure and front stage structure, the separation energy cavity body formed by the communication of one-to-one corresponding rear stage subchannel and front stage subchannel is used to drive front stage structure separation by high-pressure gas.The application adopts main subchannel matching nested structure, internal actuating assembly is installed in main channel to realize connection unlocking, high-pressure gas is introduced into subchannel to realize separation energy, and through topological optimization, it has the advantages of high bearing strength, fast actuating response, large release kinetic energy and light topology mass.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of connection release devices, and particularly relates to connection release devices in aerospace, weapon science and mechanical engineering, and specifically relates to a multi-channel release device with a topological structure. BACKGROUND

[0002] The connection unlocking separation device is widely used in the fields of aerospace, weapon science, etc., and has two modes of pyrotechnic driving and non-pyrotechnic driving, wherein the pyrotechnic driving mode is represented by an explosive bolt, can quickly respond to realize the unlocking separation function, but has problems of large impact load and easy generation of pollutants; the non-pyrotechnic driving mode contains electric, magnetic, thermal and gas driving sources, has advantages of high safety, small impact load and no pollution, and has been applied to the fields of aerospace, etc., but needs to be attached to a driving device, which causes negative effects of weight increase and reliability reduction of the equipment itself. The above listed driving modes of the commonly used unlocking separation devices have the controllable and reliable advantage of using high-pressure gas as a driving source of a kinetic energy release device, and can realize engineering application in most scenes in cooperation with a mechanical structure, however, the existing separation unlocking devices do not have the ability to increase the kinetic energy of the equipment, lack the device capable of providing separation kinetic energy for the equipment in the application scenes of interstage separation and head cover separation involved in aerospace and weapon science, and lack the kinetic energy release device with a topologically optimized structure to improve the lightweight degree. SUMMARY

[0003] The application aims at solving the problems of unstable driving source, low lightweight degree, poor environmental adaptability and small separation kinetic energy of the existing unlocking separation devices, and provides a multi-channel release device with a topological structure, which adopts a main-vice channel matching and nesting structure, installs an internal actuating assembly in the main channel to realize connection unlocking, and introduces high-pressure gas into the vice channel to realize separation energy charging, uses high-pressure gas as the driving source of the multi-channel release device, and topologically optimizes the front and rear stage structures.

[0004] The application aims at solving the problems of unstable driving source, low lightweight degree, poor environmental adaptability and small separation kinetic energy of the existing unlocking separation devices, and provides a multi-channel release device with a topological structure, which adopts a main-vice channel matching and nesting structure, installs an internal actuating assembly in the main channel to realize connection unlocking, and introduces high-pressure gas into the vice channel to realize separation energy charging, uses high-pressure gas as the driving source of the multi-channel release device, and topologically optimizes the front and rear stage structures.

[0005] A kind of topology multi-channel release device, including the external shell structure of front stage structure and rear stage structure and internal actuator assembly, it is characterized in that: the inside of the front stage structure is equipped with a front stage main channel and the front stage subchannel of being arranged around front stage main channel, the inside of the rear stage structure is equipped with a rear stage main channel and the rear stage subchannel of being arranged around rear stage main channel, the actuating cavity of connected rear stage main channel and front stage main channel is used to install internal actuator assembly, internal actuator assembly can be fixedly connected rear stage structure and front stage structure and can realize unlocking action after high-pressure gas is passed, the separation energy storage cavity of corresponding connected rear stage subchannel and front stage subchannel is used to pass into high-pressure gas and drive front stage structure separation.

[0006] The upper end of the rear stage subchannel is equipped with a Laval nozzle capable of realizing gas acceleration, and the Laval nozzle can be inserted into the corresponding front stage subchannel.

[0007] The Laval nozzle is embedded in the air passage boss, which is composed of the part of the rear stage subchannel protruding from the top end of the rear stage structure, and the air passage boss can be completely inserted into the corresponding front stage subchannel.

[0008] The rear stage subchannel is a through channel, and the gas inlet of the rear stage subchannel is arranged at the lower part of the rear stage main channel and located on the cavity wall of the rear stage main channel between the internal actuator assembly and the air passage connector arranged at the bottom end of the rear stage main channel; the front stage subchannel connected with the exhaust port of the rear stage subchannel is a deep air passage blind hole.

[0009] The bottom end of the rear stage main channel is threadedly connected with an air passage connector, the outer peripheral surface of the air passage connector is provided with an air passage connector sealing groove in the upper segment, and the air passage connector sealing groove is installed with a sealing ring to realize sealing; the outer peripheral surface of the air passage connector is provided with an air passage connector external thread in the lower segment, and the air passage connector external thread is connected with the rear stage internal thread on the inner wall of the bottom end of the rear stage main channel; the air passage connector internal thread is arranged in the inner cavity of the air passage connector, and the air passage connector internal thread is used to connect with the external pipeline.

[0010] The lower cavity of the front main channel is provided with a front push rod actuating cavity, a plurality of axially spaced external concave front spline separation grooves are arranged in the front push rod actuating cavity, a ring-shaped external concave groove communicating all the front spline separation grooves is formed in the middle of the front spline separation grooves, the ring-shaped external concave groove between the two adjacent front spline separation grooves forms a front bidirectional limiting groove, and the front spline pre-tightening boss of the internal actuating assembly can be embedded in the front bidirectional limiting groove.

[0011] The bottom end of the cavity of the front main channel is provided with a positioning groove, the positioning groove can be embedded in the positioning boss at the top of the rear structure, and the inner wall of the positioning groove is circumferentially provided with an external concave axial groove which can be embedded in the external convex axial block on the positioning boss.

[0012] The internal actuating assembly comprises an actuating push rod, a return spring and an actuating piston which are combined and installed together, the upper section of the actuating push rod is used for connecting and locking the front structure and the rear structure, the lower section of the actuating push rod and the return spring are both installed in the actuating piston, and the actuating piston in the actuating cavity advances along the axial direction under the pushing of high-pressure gas, compresses the return spring and drives the actuating push rod to rotate, so that the front structure and the rear structure are unlocked.

[0013] The top end of the actuating push rod is provided with an internal hexagonal groove for installing the internal actuating assembly, the upper section of the actuating push rod is provided with a front spline pre-tightening boss and a rear spline pre-tightening boss, the front spline pre-tightening boss is embedded in the front bidirectional limiting groove of the front structure, the rear spline pre-tightening boss is embedded in the rear bidirectional limiting groove of the rear structure, the front spline pre-tightening boss and the rear spline pre-tightening boss realize the axial limiting and pre-tightening of the internal actuating assembly on the front structure and the rear structure, and the front spline pre-tightening boss and the rear spline pre-tightening boss are matched with the front spline separation groove and the rear spline separation groove respectively to realize the torsion constraint of the actuating push rod.

[0014] The actuating piston is provided with a sliding inner cavity embedded with a reset spring and a lower section of the actuating push rod, and a helical sliding groove is opened on the inner wall surface of the sliding inner cavity and matched with the channel of the torsion sliding pin of the actuating push rod; two axial sliding grooves are symmetrically arranged on the outer cylindrical surface of the actuating piston, and the axial sliding grooves are matched with the inner convex axial sliding boss on the inner wall of the piston actuating cavity part of the rear stage main channel to realize the axial movement of the actuating piston; the lower end outer wall of the actuating piston is provided with an actuating piston sealing groove for installing a sealing ring, and the bottom end of the actuating piston is opened with a cross groove for matching the installation of the internal actuating assembly; the helical sliding groove comprises a upper end vertical section, a helical connecting section and a lower end vertical section which are sequentially communicated.

[0015] The front stage structure, the rear stage structure and the vent connector are the external structures of the multi-channel release device, and the structural features thereof can be combined with the front and rear two stage devices (such as spacecraft fairing and cabin section) for integrated forming manufacturing, so that only the internal actuating assembly is needed to realize the connection unlocking and separation energizing function of the application, and the beneficial effects of high lightweight degree and good separation consistency are achieved.

[0016] Compared with the prior art, the application has the following advantages:

[0017] The multi-channel release device with a topological structure provided by the application comprises a front stage structure, a rear stage structure, an actuating push rod, a reset spring, an actuating piston, a sealing ring and a vent connector, the front stage structure and the rear stage structure adopt a main and auxiliary channel matching nested structure, the internal actuating assembly is installed in the main channel to realize the connection unlocking of the front stage structure and the rear stage structure, the actuating push rod and the actuating piston are matched with the helical sliding groove through the torsion sliding pin, and the actuating push rod and the actuating piston are matched with the reset spring, the double-layer sealing ring is installed at the lower end of the actuating piston, and the vent connector is installed at the bottom end of the rear stage structure; the auxiliary channel is connected to high-pressure gas to realize separation energizing through the Laval nozzle, and the front stage structure and the rear stage structure adopt a topological optimization structure to realize lightweight design under the condition of ensuring strength and function. The multi-channel release device with a topological structure adopts mechanism design and topological optimization, realizes connection unlocking and separation energizing through high-pressure gas, has four functions and advantages of connection locking, unlocking separation, release energizing and topological optimization, and has the advantages of high bearing strength, fast actuating response, large release kinetic energy and light topological mass in the fields of aerospace, weapon science and the like.

[0018] The actuating assembly is placed in the actuating cavity composed of the front stage structure and the rear stage structure, the axial limiting and torsion constraint are realized through the cooperation of the spline pre-tightening boss on the actuating push rod and the bidirectional limiting sliding groove, the axial limiting movement and torsion constraint are realized through the cooperation of the axial sliding groove on the actuating piston and the axial sliding boss on the inner wall of the actuating cavity, the constraint transmission is realized through the cooperation of the torsion sliding pin of the actuating push rod and the helical sliding groove in the actuating piston and the reset spring, and the connection locking is realized through the cooperation of the above, and the application has the advantage of high bearing strength.

[0019] The bottom of the actuating piston is subjected to high-pressure gas, and moves along the axial direction of the actuating cavity, and the transmission of the actuating torsional load is realized through the cooperation of the torsional sliding pin of the actuating push rod and the spiral sliding groove in the actuating piston and the reset spring, and finally the spline pre-tightening boss of the actuating push rod is unlocked and separated from the spline separation sliding groove, and the actuating response is fast.

[0020] The main channel and the four sub-channels are coaxially distributed, high-pressure gas in the main channel can be introduced into the four sub-channels, and the tail of each sub-channel is provided with a Laval nozzle structure, so that the sub-channel jet flow is accelerated to increase kinetic energy when the actuating assembly is unlocked and separated, and the kinetic energy is large.

[0021] The front-stage structure and the rear-stage structure are maximally optimized in space geometry distribution by the topology optimization technology under the premise of ensuring the bearing strength, the lightweight of the multi-channel release device is realized, and the topology is light in quality. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which preferred embodiments of the present application are shown. Like reference numerals refer to like elements throughout the drawings and the drawings are not necessarily drawn to scale with the emphasis instead being placed upon illustrating the principles of the present application.

[0023] FIG. 1 is a three-dimensional schematic diagram of the overall structure of the multi-channel release device with a topology structure according to the present application; Figure 1 FIG. 1 is a three-dimensional schematic diagram of the overall structure of the multi-channel release device with a topology structure according to the present application;

[0024] FIG. 1 is a three-dimensional schematic diagram of the overall structure of the multi-channel release device with a topology structure according to the present application; Figure 2 FIG. 1 is a three-dimensional schematic diagram of the overall structure of the multi-channel release device with a topology structure according to the present application;

[0025] FIG. 1 is a three-dimensional schematic diagram of the overall structure of the multi-channel release device with a topology structure according to the present application; Figure 3 FIG. 1 is a three-dimensional schematic diagram of the overall structure of the multi-channel release device with a topology structure according to the present application;

[0026] Figure 4 FIG. 1 is a three-dimensional schematic diagram of the overall structure of the multi-channel release device with a topology structure according to the present application;

[0027] FIG. 1 is a three-dimensional schematic diagram of the overall structure of the multi-channel release device with a topology structure according to the present application; Figure 5 FIG. 1 is a three-dimensional schematic diagram of the overall structure of the multi-channel release device with a topology structure according to the present application;

[0028] Figure 6 FIG. 1 is a three-dimensional schematic diagram of the overall structure of the multi-channel release device with a topology structure according to the present application;

[0029] FIG. 1 is a three-dimensional schematic diagram of the overall structure of the multi-channel release device with a topology structure according to the present application; Figure 7 FIG. 1 is a three-dimensional schematic diagram of the overall structure of the multi-channel release device with a topology structure according to the present application;​​

[0030] Attachment Figure 8 A schematic diagram of the three-dimensional structure of the actuating push rod of the multi-channel release device with a topological structure provided by the present invention;

[0031] Attachment Figure 9 A three-dimensional cross-sectional view of an actuating piston of a multi-channel release device with a topological structure provided by the present invention;

[0032] Attachment Figure 10 A two-dimensional cross-sectional view of the spiral chute of the multi-channel release device of the topological structure provided by the present invention;

[0033] Attachment Figure 11 A three-dimensional cross-sectional view of the vent joint of the multi-channel release device with a topological structure provided by the present invention.

[0034] Among them: 1 - front stage structure; 101 - front stage external thread; 102 - front stage push rod actuating chamber; 103 - mounting hole; 104 - front stage spline separation slide; 105 - front stage two-way limit slide; 106 - front stage auxiliary channel; 107 - front stage main channel; 108 - positioning groove; 2 - rear stage structure; 201 - rear stage main channel; 202 - rear stage auxiliary channel; 203 - rear stage spline separation slide; 204 - rear stage two-way limit slide; 205 - positioning boss; 206 - ventilation boss; 207 - Laval nozzle; 208 - rear stage push rod actuating chamber; 209 - axial sliding boss; 210 - piston actuating chamber; 211 - piston actuating chamber; 212 - piston actuating chamber; 213 - piston actuating chamber; 214 - piston actuating chamber; 215 - piston actuating chamber; 216 - piston actuating chamber; 217 - piston actuating chamber; 218 - piston actuating chamber; 219 - piston actuating chamber; 220 - piston actuating chamber; 221 - piston actuating chamber; 222 - piston actuating chamber; 223 - piston actuating chamber; 224 - piston actuating chamber; 225 - piston actuating chamber; 226 - piston actuating chamber; 227 - piston actuating chamber; 228 - piston actuating chamber; 229 - piston actuating chamber; 230 - piston actuating chamber; 231 - piston actuating chamber; 232 - piston actuating chamber; 233 - piston actuating chamber; 234 - piston actuating chamber; 235 - piston actuating chamber; 236 - piston actuating chamber; 237 - piston actuating chamber; 238 - piston a 1—rear stage external thread; 212—rear stage internal thread; 3—actuating push rod; 301—hexagonal socket; 302—front stage spline pre-tightening boss; 303—rear stage spline pre-tightening boss; 304—torsion sliding pin; 4—return spring; 5—actuating piston; 501—sliding inner cavity; 502—actuating piston sealing groove; 503—cross groove; 504—spiral slide groove; 5041—upper end vertical section; 5042—spiral connecting section; 5043—lower end vertical section; 505—axial slide groove; 6—sealing ring; 7—vent joint; 701—vent joint sealing groove; 702—vent joint external thread; 703—vent joint internal thread. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that certain words indicating orientation or positional relationships are only for the purpose of facilitating the description of the present invention and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0037] In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "installed", "provided with", and "connected" should be understood in a broad sense. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood in specific circumstances.

[0038] like Figures 1-11 As shown: A multi-channel release device with a topological structure includes an external shell structure consisting of a front-stage structure 1 and a rear-stage structure 2, and an internal actuating component. A front-stage main channel 107 and a plurality of front-stage sub-channels 106 arranged around the front-stage main channel 107 are provided inside the front-stage structure 1, and a rear-stage main channel 201 and a plurality of rear-stage sub-channels 202 arranged around the rear-stage main channel 201 are provided inside the rear-stage structure 2. The actuating cavity formed by the connected rear-stage main channel 201 and the front-stage main channel 107 is used to install the internal actuating component. The internal actuating component can fixedly connect the rear-stage structure 2 and the front-stage structure 1 and can realize an unlocking action after the high-pressure gas is introduced. The separation charging cavity formed by the one-to-one connected rear-stage sub-channels 202 and the front-stage sub-channels 106 is used to introduce high-pressure gas to drive the front-stage structure 1 to separate; the high-pressure gas is introduced through the ventilation joint installed at the bottom end of the multi-channel release device.

[0039] Furthermore, a Laval nozzle 207 capable of achieving gas acceleration is provided at the upper end of the rear-stage sub-channel 202, and the Laval nozzle 207 can be inserted into the corresponding front-stage sub-channel 106; the above-mentioned Laval nozzle 207 is embedded in the ventilation boss 206, and the ventilation boss 206 is composed of the portion of the rear-stage sub-channel 202 protruding from the top of the rear-stage structure 2, and the ventilation boss 206 can be fully inserted into the corresponding front-stage sub-channel 106.

[0040] Furthermore, the rear-stage sub-channel 202 is a through channel, and the air inlet of the rear-stage sub-channel 202 is arranged at the lower part of the rear-stage main channel 201, and the air inlet is located on the cavity wall of the rear-stage main channel 201 between the internal actuator component and the ventilation joint 7 set at the bottom end of the rear-stage main channel 201; the front-stage sub-channel 106 connected to the exhaust port of the rear-stage sub-channel 202 is a ventilation blind hole with a depth.

[0041] Further, the bottom end of the rear main channel 201 is threadedly connected with a tubular vent connector 7, the outer circumferential surface of the vent connector 7 is provided with a vent connector sealing groove 701, and the vent connector sealing groove 701 is provided with a sealing ring 6 to achieve sealing; the lower end of the outer circumferential surface of the vent connector 7 is provided with a vent connector outer thread 702, and the vent connector outer thread 702 is connected with the rear inner thread 212 on the inner wall of the bottom end of the rear main channel 201; the inner cavity of the vent connector 7 is provided with a vent connector inner thread 703, and the vent connector inner thread 703 is used to connect with an external pipeline to guide high-pressure gas to the rear main channel.

[0042] Further, the lower cavity of the front main channel 107 is provided with a front push rod actuating cavity 102, and the front push rod actuating cavity 102 is provided with a plurality of axially spaced external concave front spline separation grooves 104, the middle part of each front spline separation groove 104 is provided with an annular external concave groove connected with all the front spline separation grooves 104, the annular external concave groove between any two adjacent front spline separation grooves 104 forms a front bidirectional limiting groove 105, and the front spline pre-tightening boss 302 of the internal actuating assembly can be embedded in the front bidirectional limiting groove 105; the upper cavity of the rear main channel 201 is provided with a rear push rod actuating cavity 208, and the rear push rod actuating cavity 208 is provided with a plurality of axially spaced rear spline separation grooves 203, the cavity wall between any two adjacent rear spline separation grooves 203 is provided with two rows of circumferentially distributed internal convex rear limiting protrusions, and the space between the upper and lower two rows of rear limiting protrusions forms a rear bidirectional limiting groove 204, the rear spline pre-tightening boss 303 of the internal actuating assembly can be embedded in the rear bidirectional limiting groove 204, and the rear spline pre-tightening boss 303 of the internal actuating assembly and the front spline pre-tightening boss 302 can axially move in the channel formed by the front spline separation groove 104 and the rear spline separation groove 203.

[0043] In order to stably connect the front structure 1 and the rear structure 2, the cavity bottom end of the front main channel 107 is provided with a positioning groove 108, and the positioning groove 108 can be embedded in the positioning protrusion 205 on the top of the rear structure 2; further, the inner wall of the positioning groove 108 is circumferentially provided with an external concave axial groove, and the external concave axial groove can be embedded in the external convex axial block on the positioning protrusion 205.

[0044] On the basis of the above structure, the internal actuating assembly comprises an actuating push rod 3, a reset spring 4 and an actuating piston 5 combined and installed together, the upper end of the actuating push rod 3 is used to connect and lock the front structure 1 and the rear structure 2, the lower end of the actuating push rod 3 and the reset spring 4 are both installed in the actuating piston 5, and the actuating piston 5 in the actuating cavity is pushed by high-pressure gas to axially advance, compress the reset spring 4 and drive the actuating push rod 3 to rotate to achieve unlocking of the front structure 1 and the rear structure 2.

[0045] Further, the top end of the actuating push rod 3 is provided with an internal hexagonal groove 301 for installing and positioning the internal actuating assembly, the upper section of the actuating push rod 3 is provided with a front-stage spline pre-tightening boss 302 and a rear-stage spline pre-tightening boss 303, the front-stage spline pre-tightening boss 302 is embedded in the front-stage bidirectional limiting sliding groove 105 of the front-stage structure 1, and the rear-stage spline pre-tightening boss 303 is embedded in the rear-stage bidirectional limiting sliding groove 204 of the rear-stage structure 2, so as to realize the axial limiting and pre-tightening of the internal actuating assembly on the front-stage structure 1 and the rear-stage structure 2, and the front-stage spline pre-tightening boss 302 and the rear-stage spline pre-tightening boss 303 are matched with the front-stage spline separation sliding groove 104 and the rear-stage spline separation sliding groove 203 respectively to realize the torsion constraint of the actuating push rod 3; the lower end of the actuating push rod 3 is provided with two symmetrically arranged torsion sliding pins 304, the torsion sliding pin 304 can be embedded in the spiral sliding groove 504 in the inner cavity of the actuating piston 5, and the torsion sliding pin 304 and the spiral sliding groove 504 are matched with each other to realize the linkage of the internal actuating assembly.

[0046] Further, the actuating piston 5 is provided with a sliding inner cavity 501 embedded in the reset spring 4 and the lower section of the actuating push rod 3, and the spiral sliding groove 504 matched with the channel of the torsion sliding pin 304 of the actuating push rod 3 is opened on the inner wall surface of the sliding inner cavity 501; two axial sliding grooves 505 are symmetrically arranged on the outer cylindrical surface of the actuating piston 5, the axial sliding groove 505 is matched with the axially protruding axial sliding boss 209 on the inner wall of the piston actuating cavity 210 part of the rear-stage main channel 201 to realize the axial movement of the actuating piston 5, the actuating piston sealing groove 502 for installing the sealing ring 6 is arranged on the lower end outer wall of the actuating piston 5, and the cross groove 503 for matching and installing the internal actuating assembly is opened at the bottom end of the actuating piston 5; the spiral sliding groove 504 includes an upper end vertical section 5041, a spiral connecting section 5042 and a lower end vertical section 5043 which are sequentially communicated. Embodiment

[0047] The specific structure and specific technical effects of the topological multi-channel release device provided by the embodiment of the application will be described in detail as follows:

[0048] The embodiment provides a topological multi-channel release device, Figure 1 、 Figure 2 、 Figure 3 As shown in Figure 1 、 Figure 2 、 Figure 3 the topological multi-channel release device adopts a main-vice channel matching nested structure, the multi-channel release device realizes connection unlocking by adopting the main-vice channel matching nested structure combined with topological optimization technology, and the internal actuating assembly is driven by high-pressure gas in the vice channel to realize separation and energy storage. Figures 1-11The multi-channel release device of the topology comprises: a front-stage structure 1, a rear-stage structure 2, an actuating push rod 3, a reset spring 4, an actuating piston 5, a sealing ring 6, and a vent connector 7. The front-stage structure 1 and the rear-stage structure 2 are connected in cooperation as an external housing structure of the multi-channel release device. The actuating push rod 3, the reset spring 4, and the actuating piston 5 constitute an internal actuating assembly. The bottom end of the rear-stage structure 2 is provided with the vent connector 7. The actuating piston 5 and the vent connector 7 are provided with the sealing ring 6.

[0049] The upper end of the front-stage structure 1 is externally provided with a front-stage external thread 101, which can be connected with other equipment. The front-stage structure 1 can also be directly used as a front stage of a main body of equipment. The lower end of the front-stage structure 1 is provided with a positioning groove 108, which is connected in cooperation with a positioning boss 205 of the rear-stage structure 2, so as to limit the relative torsion of the front-stage structure 1 and the rear-stage structure 2. A front-stage main channel 107 and four front-stage auxiliary channels 106 are arranged inside the front-stage structure 1. The front-stage main channel 107 is provided with a front-stage push rod actuating cavity 105. A front-stage bidirectional limiting sliding groove 105 and a front-stage spline separation sliding groove 104 are arranged in the lower section of the front-stage push rod actuating cavity 105. The front-stage bidirectional limiting sliding groove 105 and the front-stage spline separation sliding groove 104 can be matched with the actuating push rod 3. An installation hole 103, into which a tool can be inserted, is arranged at the upper end of the front-stage main channel 107. The four front-stage auxiliary channels 106 are distributed in a circumferential direction around the front-stage main channel 107. The front-stage auxiliary channels 106 are blind vent holes with depths.

[0050] The upper end of the rear structure 2 is provided with a positioning boss 205 for mating connection with the front structure 1, and the outer wall of the lower end of the rear structure 2 is provided with a rear outer thread 211, so that the rear structure 2 can be connected with other equipment through the rear outer thread 211, and the rear structure 2 can also be directly used as a rear part of the equipment main body; the inside of the rear structure 2 is provided with a rear main passage 201 and four rear auxiliary passages 202, the upper section of the rear main passage 201 is provided with a rear push rod actuating cavity 208, the rear push rod actuating cavity 208 is provided with a rear bidirectional limiting sliding groove 204 and a rear spline separation sliding groove 203, the rear bidirectional limiting sliding groove 204 and the rear spline separation sliding groove 203 can cooperate with the actuating push rod 3; the middle and lower sections of the rear main passage 201 are a piston actuating cavity 210, the cavity inner wall of the piston actuating cavity 210 is symmetrically provided with two axial sliding bosses 209, the axial sliding bosses 209 cooperate with the axial sliding groove 505 of the actuating piston 5 to realize the axial movement of the actuating piston 5; the cavity bottom end of the rear main passage 201 is provided with a rear inner thread 212 for mating connection with the vent connector outer thread 702; the four rear auxiliary passages 202 are circumferentially distributed on the side of the rear main passage 201, high-pressure gas is introduced from the lower end outlet of the rear main passage 201 and extended to the four rear auxiliary passages 202, the upper end of each rear auxiliary passage 202 is higher than the upper end of the rear structure 2 to form a vent boss 206, and each vent boss 206 is embedded with a Laval nozzle 207 to realize gas acceleration.

[0051] The internal actuating assembly 3 is composed of an actuating push rod 3, a reset spring 4, an actuating piston 5 and a matched sealing ring 6, and is integrally installed in an actuating cavity formed by the front-stage structure 1 and the rear-stage structure 2. The actuating push rod 3 is a tubular column, is installed in a push rod actuating cavity of the front-stage structure 1 and the rear-stage structure 2, and is provided with an internal hexagonal groove 301 at the top end, and is provided with upper and lower two rows of spline pre-tightening bosses at the upper section, which are matched with the bidirectional limiting sliding grooves in the push rod actuating cavities of the front-stage structure 1 and the rear-stage structure 2 to realize axial limiting and pre-tightening, and are matched with the front-stage spline separation sliding groove 104 and the rear-stage spline separation sliding groove 203 to realize torsion constraint of the actuating push rod 3. The lower end of the actuating push rod 3 is provided with two symmetrically arranged torsion sliding pins 304, which are matched with the spiral sliding grooves 504 in the internal actuating piston 5 to realize linkage of the internal actuating assembly. The actuating piston 5 is a column with an internal cavity, the upper end of which is internally provided with a cavity, the cavity is provided with a sliding inner cavity 501, the sliding inner cavity 501 is matched with the lower section of the actuating push rod 3, and the reset spring 4 is installed in the sliding inner cavity 501, the cavity inner wall surface of the sliding inner cavity 501 is provided with a spiral sliding groove 504, the spiral sliding groove 504 is channel matched with the torsion sliding pin 304 of the actuating push rod 3, and the spiral sliding groove 504 is composed of an upper end vertical section 5041, a spiral connecting section 5042 and a lower end vertical section 5043, wherein the upper end vertical section 5041 is slightly longer than the lower end vertical section 5043. The outer cylindrical surface of the actuating piston 5 is symmetrically arranged with two axial sliding grooves 505 along the axial direction, the axial sliding grooves 505 are matched with the axial sliding bosses 209 on the internal cavity surface of the rear-stage structure 2 to realize axial movement of the actuating piston 5, the lower end outer surface of the actuating piston 5 is provided with two actuating piston sealing grooves 502, and one sealing ring 6 is installed in each of the actuating piston sealing grooves 502, and the bottom end of the actuating piston 5 is provided with a cross groove 503 for installation and use, and tools can be respectively abutted on the cross groove 503 and the internal hexagonal groove 301.

[0052] The vent connector 7 is a tubular column structure, the outer peripheral surface upper section of the vent connector 7 is provided with a vent connector sealing groove 701, the vent connector sealing groove 701 is installed with a sealing ring 6 to realize sealing, the outer peripheral surface lower section of the vent connector 7 is provided with a vent connector outer thread 702, the vent connector outer thread 702 is matched and connected with the rear-stage inner thread 212 on the bottom end inner wall of the rear-stage main channel 201, and the inner cavity of the vent connector 7 is provided with a vent connector inner thread 703, which is used for connecting with an external pipeline to guide high-pressure gas to the rear-stage main channel 201 and to branch and distribute the rear-stage auxiliary channel 202.

[0053] The multi-channel release device provided by the embodiment of the application realizes connection unlocking by limiting and separating torsion of the internal actuating assembly installed in the main channel and realizes separation charging by driving the actuating assembly by high-pressure gas in the auxiliary channel.

[0054] The connection unlocking function is implemented as follows: when the front and rear stage devices are connected, the internal actuating assembly is in a completely constrained state, the front stage spline pre-tightening boss 302 and the rear stage spline pre-tightening boss 303 on the actuating push rod 3 are located in the front stage bidirectional limiting sliding groove 105 and the rear stage bidirectional limiting sliding groove 204 respectively, the axial bidirectional bearing constraint of the internal actuating assembly is achieved, the torsion sliding pin 304 of the actuating push rod 3 is located in the upper end vertical section 5041 of the helical sliding groove 504 of the actuating piston 5 under the elastic force of the reset spring 4, and the axial sliding groove 505 of the actuating piston 5 is matched with the axial sliding boss 209 of the rear stage structure 2 to achieve the torsional constraint of the internal actuating assembly, the internal actuating assembly is completely constrained, and finally the connection locking of the front and rear stage devices is achieved, preventing functional failure and other risks. When the front and rear stage devices are unlocked, the actuating piston 5 moves upward along the axial direction under the driving of the high-pressure gas, the torsion sliding pin 304 of the actuating push rod 3 rotates along the helical sliding groove 504, the actuating push rod 3 rotates, and then the front stage spline pre-tightening boss 302 and the rear stage spline pre-tightening boss 303 are turned out of the front stage bidirectional limiting sliding groove 105 and the rear stage bidirectional limiting sliding groove 204 to the front stage spline separation sliding groove 104 and the rear stage spline separation sliding groove 203, and the unlocking of the front and rear stage devices is achieved.

[0055] The separation and energy charging function is implemented as follows: when the front and rear stage devices are separated after being unlocked, part of the high-pressure gas enters the rear stage main channel 201, and the other part of the high-pressure gas flows into the rear stage auxiliary channel 202, the high-pressure gas entering the rear stage auxiliary channel 202 flows through the Laval nozzle 207 to the front stage auxiliary channel 106, the high-pressure gas in the rear stage main channel 201 completes the unlocking of the internal actuating assembly, the high-pressure gas in the rear stage auxiliary channel 202 impacts the bottom of the front stage auxiliary channel 106, drives the front stage device to separate, and under the acceleration of the Laval nozzle 207, the front stage device is continuously charged with kinetic energy until the front and rear stages are separated.

[0056] In further preferred embodiments, the front stage structure 1 and the rear stage structure 1 shown in the present application jointly constitute the external structure of the multi-channel release device, the front stage structure 1 and the rear stage structure 2 can be arranged in multiple groups in parallel at the connection surface of the front and rear stage devices, or the front stage structure and the rear stage structure can be directly used as the front and rear stage devices, both application modes can be manufactured by integrated molding technology, and the lightweight degree can be increased by combining the topology optimization technology.

[0057] In further preferred embodiments, the front stage structure 1 and the rear stage structure 2 provided by the present application can be integrally formed with the front and rear stage devices respectively, then only the internal actuating assembly is needed to achieve the connection unlocking and separation energy charging functions described in the present application, and the beneficial effects of high lightweight degree and good separation consistency are achieved.

[0058] The application adopts a topological optimization structure to realize lightweight of the multi-channel release device, the mass can be reduced by 40% after topological optimization, the high-pressure gas driving energy release device is completed by matching and nesting structures of primary and secondary channels to realize unlocking and separation, the internal actuating assembly in the front-stage primary channel 107 and the rear-stage primary channel 201 moves to realize unlocking, the Laval nozzle 207 arranged on each rear-stage secondary channel 202 accelerates the internal gas to continuously increase the kinetic energy of the front-stage device, and the application has the advantages of high bearing strength and light topological mass; the external structure is integrally formed with the front-stage and rear-stage devices, and the separation kinetic energy is improved by combining the Laval nozzle 207, and the application has the advantages of fast actuating response and large release kinetic energy.

[0059] The above examples are only used to illustrate the technical solutions of the application, rather than limit them; although the application is described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A multi-channel release device of a topological structure, comprising an external shell structure consisting of a front-stage structure (1) and a rear-stage structure (2), and an internal actuating component, characterized in that: The front-stage structure (1) is provided with a front-stage main channel (107) and a plurality of front-stage sub-channels (106) arranged around the front-stage main channel (107), and the rear-stage structure (2) is provided with a rear-stage main channel (201) and a plurality of rear-stage sub-channels (202) arranged around the rear-stage main channel (201). The actuating cavity formed by the connected rear-stage main channel (201) and the front-stage main channel (107) is used to install the internal actuating component. The internal actuating component can be fixedly connected to the rear-stage structure (2) and the front-stage structure (1) and can realize the unlocking action after the high-pressure gas is introduced. The separation charging cavity formed by the connected rear-stage sub-channels (202) and the front-stage sub-channels (106) is used to introduce the high-pressure gas to drive the front-stage structure (1) to separate. The air inlet of the first-stage secondary channel (202) is arranged at the lower part of the rear-stage main channel (201), and the air inlet is located on the cavity wall of the rear-stage main channel (201) between the internal actuating component and the ventilation joint (7) arranged at the bottom end of the rear-stage main channel (201); the internal actuating component includes an actuating push rod (3), a return spring (4) and an actuating piston (5) installed together, the upper section of the actuating push rod (3) is used to connect and lock the front-stage structure (1) and the rear-stage structure (2), the lower section of the actuating push rod (3) and the return spring (4) are both installed on the actuating piston (5), and the actuating piston (5) in the actuating cavity is pushed by the high-pressure gas to advance axially to compress the return spring (4) and drive the actuating push rod (3) to rotate to realize the unlocking of the front-stage structure (1) and the rear-stage structure (2).

2. The multi-channel release device of the topological structure according to claim 1, characterized in that: The upper end of the rear-stage secondary channel (202) is provided with a Laval nozzle (207) capable of achieving gas acceleration, and the Laval nozzle (207) can be inserted into the corresponding front-stage secondary channel (106).

3. The multi-channel release device of the topological structure according to claim 2, characterized in that: The Laval nozzle (207) is embedded in the ventilation boss (206), and the ventilation boss (206) is composed of the portion of the rear-stage auxiliary channel (202) protruding from the top of the rear-stage structure (2). The ventilation boss (206) can be completely inserted into the corresponding front-stage auxiliary channel (106).

4. The multi-channel release device of the topological structure according to claim 1, characterized in that: The rear-stage auxiliary channel (202) is a through channel, and the front-stage auxiliary channel (106) communicating with the exhaust port of the rear-stage auxiliary channel (202) is a ventilation blind hole with a depth.

5. The multi-channel release device of the topological structure according to claim 1, characterized in that: The bottom end of the rear-stage main channel (201) is threadedly connected to a vent joint (7); a vent joint sealing groove (701) is provided on the upper portion of the outer circumference of the vent joint (7); a sealing ring (6) is installed in the vent joint sealing groove (701) to achieve sealing; a vent joint external thread (702) is provided on the lower portion of the outer circumference of the vent joint (7); the vent joint external thread (702) is cooperatively connected with the rear-stage internal thread (212) on the inner wall of the bottom end of the rear-stage main channel (201); a vent joint internal thread (703) is provided in the inner cavity of the vent joint (7); the vent joint internal thread (703) is used to connect to an external pipeline.

6. The multi-channel release device of the topological structure according to claim 1, characterized in that: A front-stage push rod actuating cavity (102) is provided in the lower cavity of the front-stage main channel (107), and a plurality of outer concave front-stage spline separation chutes (104) spaced along the axial direction are provided in the front-stage push rod actuating cavity (102). An annular outer groove connecting all the front-stage spline separation chutes (104) is provided in the middle of the front-stage spline separation chutes (104). The annular outer groove between two adjacent front-stage spline separation chutes (104) constitutes a front-stage two-way limiting chutes (105). The front-stage spline pre-tightening boss (302) of the internal actuating component can be embedded in the front-stage two-way limiting chutes (105); a rear-stage push rod actuating cavity (208) is provided in the upper cavity of the rear-stage main channel (201). ), a plurality of rear-stage spline separation grooves (203) spaced apart along the axial direction are provided in the rear-stage push rod actuating cavity (208), two rows of inwardly convex rear-stage limiting protrusions distributed along the circumferential direction are arranged on the cavity wall between the rear-stage spline separation grooves (203), and the space between the upper and lower rows of rear-stage limiting protrusions constitutes a rear-stage bidirectional limiting groove (204), and the rear-stage spline pre-tightening boss (303) of the internal actuating component can be embedded in the rear-stage bidirectional limiting groove (204), and the rear-stage spline pre-tightening boss (303) and the front-stage spline pre-tightening boss (302) of the internal actuating component can move axially in the channel formed by the one-to-one corresponding front-stage spline separation groove (104) and the rear-stage spline separation groove (203).

7. The multi-channel release device of the topological structure according to claim 6, characterized in that: A positioning groove (108) is provided at the bottom end of the cavity of the front-stage main channel (107), and the positioning groove (108) can be embedded in the positioning boss (205) on the top of the rear-stage structure (2); and an outward concave axial groove is distributed circumferentially on the inner wall of the positioning groove (108), and the outward concave axial groove can be correspondingly embedded in the outward convex axial block on the positioning boss (205).

8. The multi-channel release device of the topological structure according to claim 1, characterized in that: The top end of the actuating push rod (3) is provided with an inner hexagonal groove (301) for mounting and positioning the internal actuating assembly. A front-stage spline pre-tightening boss (302) and a rear-stage spline pre-tightening boss (303) are provided on the upper section of the actuating push rod (3). The front-stage spline pre-tightening boss (302) is embedded in the front-stage two-way limiting slide groove (105) of the front-stage structure (1), and the rear-stage spline pre-tightening boss (303) is embedded in the rear-stage two-way limiting slide groove (204) of the rear-stage structure (2), so as to realize axial limitation of the internal actuating assembly on the front-stage structure (1) and the rear-stage structure (2). and pre-tightening, the front-stage spline pre-tightening boss (302) and the rear-stage spline pre-tightening boss (303) respectively cooperate with the front-stage spline separation groove (104) and the rear-stage spline separation groove (203) to realize the torsional constraint of the actuating push rod (3); the lower end of the actuating push rod (3) is provided with two symmetrically arranged torsional sliding pins (304), the torsional sliding pins (304) can be embedded in the spiral groove (504) in the inner cavity of the actuating piston (5), and the torsional sliding pins (304) and the spiral groove (504) cooperate with each other to realize the linkage of the internal actuating components.

9. The multi-channel release device of the topological structure according to claim 1, characterized in that: The actuating piston (5) is provided with a sliding inner cavity (501) in which a return spring (4) and the lower section of the actuating push rod (3) are embedded. A spiral sliding groove (504) is provided on the inner wall surface of the sliding inner cavity (501) to cooperate with the torsion sliding pin (304) of the actuating push rod (3). Two axial sliding grooves (505) are symmetrically arranged on the outer cylindrical surface of the actuating piston (5). The axial sliding grooves (505) are in contact with the inner portion of the piston actuating cavity (210) of the rear main channel (201). The inner convex axial sliding boss (209) on the wall cooperates to realize the axial movement of the actuating piston (5), and an actuating piston sealing groove (502) for installing a sealing ring (6) is provided on the outer wall of the lower end of the actuating piston (5), and a cross groove (503) for cooperating with the installation of an internal actuating component is opened at the bottom end of the actuating piston (5); the spiral slide groove (504) includes an upper vertical section (5041), a spiral connecting section (5042), and a lower vertical section (5043) connected in sequence.

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