CN215057795U - Solid gas generator - Google Patents

Abstract

The utility model provides a solid fuel gas generator, which adopts a safe ignition mechanism and is compressed and fixed by a compression ring, thus improving the safety performance of the solid fuel gas generator; meanwhile, the propellant grain component is fixed in the combustion chamber, the grain is firmly installed and is convenient to replace, the grain is stably installed, the formula or the number of the grain can be adjusted or replaced according to the working state of the gas generator, high-pressure gas can be rapidly and continuously provided for the interior of the missile launching canister in a short time, and the missile can reach a preset speed when being discharged; the utility model relates to a solid fuel gas generator is a solid fuel gas generator for ejection of many spray tubes, high pressure formula of safe and reliable, compact structure, pressure boost efficient, the gas production response is fast.

Description

Solid gas generator

Technical Field

The utility model belongs to the technical field of solid fuel gas generator, in particular to solid fuel gas generator.

Background

The solid fuel gas generator is a device which generates a large amount of high-temperature high-pressure gas by burning internal fuel, and the working principle is that an ignition device is ignited by electricity, the ignition device sprays the high-temperature gas to ignite main charge (solid propellant), a large amount of high-temperature combustion bodies generated by burning the main charge are accumulated in a combustion chamber to generate high pressure, and the high-temperature high-pressure gas is sprayed out through a spray pipe. The solid gas generator can be used as a high-temperature gas source to provide power for the missile launching canister, the solid gas generator sprays high-temperature high-pressure gas into the missile launching canister, the gas pressure inside the missile launching canister is rapidly increased to push the missile to move, and the function of converting the chemical energy of the propellant into the kinetic energy of the missile movement is realized.

At present, devices for providing kinetic energy for missile shooting barrels at home and abroad mainly comprise cannon type, compressed air type, hydraulic-pneumatic type, gas-steam type, self-shooting type and electromagnetic type devices, wherein the solid gas type has the advantages of small volume, large energy, simple structure, suitability for being directly assembled in the shooting barrels, good maneuverability, high reliability and the like. The missile launching canister requires the solid gas generator to rapidly and continuously provide high-temperature gas for the interior of the missile launching canister in a short time.

The ignition structure of the existing solid gas generator is mostly directly provided with an igniter or an ignition head, and the accidental excitation of the ignition device is prevented through other short-circuit modes such as a short-circuit piece and the like, so that the safety is poor; the inside grain of combustion chamber is mostly freely filling, and is fixed with the grain through adhesive or clamp plate, and the fixed process of grain is loaded down with trivial details on the one hand, and on the other hand when needs are changed grain prescription or quantity and debug generator operating condition, has the problem that the grain is difficult to take out, leads to the grain to change or increase and decrease quantity difficulty.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects and provide a solid fuel gas generator, which adopts a safe ignition mechanism and is compressed and fixed by a compression ring, thereby improving the safety performance of the solid fuel gas generator; meanwhile, the propellant grain component is fixed in the combustion chamber, so that the grain is firmly installed and is convenient to replace; the utility model discloses a solid gas generator is a solid gas generator for ejection of safe and reliable, compact structure, pressure boost efficient, the quick many spray tubes of gas production response, high pressure (18-20MPa) formula, and the powder column installation is stable and can be according to gas generator operating condition adjustment or change powder column prescription or quantity, can be in the short time fast, last for the inside high-pressure gas that provides of missile launch canister, make the missile reach predetermined speed when going out a section of thick bamboo.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

the utility model provides a solid fuel gas generator, which comprises an ignition component, an end cover, a shell, a propellant grain component and a spray pipe;

one end of the shell is open, the open end is connected with the end cover, and the other end of the shell is provided with a spray pipe; the ignition assembly is fixed at the opening end of the shell through an end cover; the propellant grain assembly is fixed inside the shell; after the ignition assembly ignites the propellant grain assembly, the generated high-temperature and high-pressure gas is sprayed out through the spray pipe;

the propellant grain assembly comprises a grain baffle plate and a propellant grain; the medicine blocking plates are fixed at two ends of the propellant grain and used for compressing the propellant grain.

Further, the propellant grain assembly also comprises a support rod; the propellant grain pressing device is characterized in that the propellant grain pressing plate is provided with openings matched with the supporting rods, the supporting rods penetrate through the openings in the propellant grain pressing plates at two ends of the propellant grain, and the propellant grain pressing plate is fixed through nuts and then compresses the propellant grain.

Furthermore, a through hole is formed in the propellant grain, and the support rod penetrates through the through hole and is matched with the propellant baffle plate;

furthermore, the number of propellant grains is 3-5; each propellant grain comprises a supporting cylinder, a main propellant and a combustion limiting layer, wherein the main propellant is arranged in the supporting cylinder, and the combustion limiting layers are arranged at two ends of the main propellant.

Further, the ignition assembly comprises a safe ignition mechanism and an ignition medicine box; the safety ignition mechanism is fixed at the opening end of the shell through an end cover, the safety ignition mechanism compresses the end cover through a safety ignition mechanism compression ring, and the safety ignition mechanism is connected with the end cover through threads; the ignition medicine box is fixedly arranged on the end face of the safety ignition mechanism inside the shell.

Furthermore, safety arrangement and insensitive ignition utensil are equipped with to safe ignition mechanism inside, after insensitive ignition utensil igniteed, the inside hot gas that produces of safe ignition mechanism transmits to the ignition medicine box when protection device opens.

Further, the ignition medicine box is one end open-ended cylindrical cavity, and ignition medicine box open end and safety ignition mechanism fixed connection, the other end and lateral wall are equipped with the through-hole, and the inside ignition medicine of locating the ignition medicine box is lighted the back by safety ignition mechanism, and the release heat makes propellant grain subassembly burning.

Further, the shell is in threaded connection with the spray pipes, the spray pipes are Laval spray pipes, and the number of the spray pipes is 3-5.

Further, the solid gas generator further comprises a protective cover, wherein the protective cover is connected with the end cover through threads and arranged outside the shell and used for protecting the ignition assembly.

Furthermore, the shell and the end cover, the safety ignition mechanism and the end cover and the shell and the spray pipe are sealed through O-shaped rubber rings.

Compared with the prior art, the utility model following beneficial effect has:

(1) the utility model relates to a solid fuel gas generator, which adopts a safe ignition mechanism and is compressed and fixed by a compression ring, thus improving the safety performance of the solid fuel gas generator;

(2) the utility model relates to a solid gas generator, which designs a unique propellant grain fixing mode, fixes a propellant grain component in a combustion chamber through a grain baffle plate and a support rod, has firm installation and convenient replacement of grains, and can adjust or replace the formula or the quantity of grains according to the working state of the gas generator;

(3) the utility model relates to a solid gas generator is equipped with a plurality of spray tubes and a plurality of grain, and overall structure is compact, and dynamic response is fast, can be in the short time, stable work under the high temperature high pressure, produces a large amount of highly compressed clean gas of high temperature, for the missile jets out a section of thick bamboo fast and provides power, and the successful messenger missile reaches the speed and the acceleration that need.

Drawings

FIG. 1 is a schematic view of a solid gas generator according to the present invention;

fig. 2 is a schematic view of a pressure ring structure of the safety ignition mechanism of the present invention, wherein fig. 2(a) is a left side view of the pressure ring of the safety ignition mechanism when fig. 1 is taken as a front view, and fig. 2(b) is a sectional view taken along the direction of a-a in fig. 2 (a);

fig. 3 is a schematic structural view of the propellant grain assembly of the present invention, wherein fig. 3(a) is a left side view of the propellant grain assembly when fig. 1 is a front view, and fig. 3(b) is a sectional view taken along the direction a-a in fig. 3 (a);

FIG. 4 is a schematic structural view of a single grain of the present invention;

fig. 5 is a schematic diagram of the distribution of the nozzles of the present invention.

Detailed Description

The features and advantages of the present invention will become more apparent and appreciated from the following detailed description of the invention.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

As shown in fig. 1, the solid gas generator of the present invention is characterized by comprising an ignition assembly, an end cover 3, a shell 7, a propellant grain assembly 8 and a spray pipe 11;

one end of the shell 7 is open, the open end is connected with the end cover 3, and the other end is provided with a spray pipe 11; the ignition assembly is fixed at the opening end of the shell 7 through the end cover 3; the propellant grain assembly 8 is fixed inside the shell 7; after the ignition assembly ignites the propellant grain assembly 8, the generated high-temperature and high-pressure gas is sprayed out through the spray pipe 11;

the propellant grain assembly 8 comprises a grain baffle plate and a propellant grain 21; the medicine blocking plates are fixed at two ends of the propellant grain 21 and used for compressing the propellant grain 21.

Further, the cavity of the shell 7 is internally provided with small bosses, and the bosses are provided with threaded holes for mounting propellant grain assemblies 8, the small bosses are uniformly distributed, and the number of the small bosses is preferably 3-6.

Further, the propellant grain assembly 8 further comprises a support rod 20; the medicine board is equipped with the trompil that matches with bracing piece 20, and bracing piece 20 runs through the trompil on the medicine board of propellant grain 21 both ends, and the screw thread is left at bracing piece 20 both ends, goes up to keep off and connect through bracing piece 20 between medicine board 19 and the lower medicine board 22, extrudees the medicine board through the nut 18 of screwing the bracing piece both ends to compress tightly propellant grain 21.

Furthermore, a through hole is arranged in the propellant grain 21, and the support rod 20 penetrates through the through hole in the propellant grain 21 and is matched with the medicine blocking plate; the number of the propellant grains 21 is 3-5, each propellant grain 21 comprises a supporting cylinder 25, a main propellant 26 and a combustion limiting layer 23, the main propellant 26 is arranged in the supporting cylinder 25, the combustion limiting layers 23 are arranged at two ends of the main propellant 26, namely the supporting cylinder is arranged outside each propellant grain for supporting; the combustion shape of the main propellant 26 is an inner circular hole and an outer groove.

Further, the ignition assembly comprises a safe ignition mechanism 1 and an ignition medicine box 5; the safe ignition mechanism 1 is fixed at the opening end of the shell 7 through the end cover 3, the safe ignition mechanism 1 is tightly pressed in the end cover 3 through the safe ignition mechanism pressure ring 16 with threads, the safe ignition mechanism 1 is connected with the end cover 3 through the threads and is sealed by adopting a sealing piece, and the safe ignition mechanism 1 is sealed with the end cover 3 through an O-shaped sealing ring 15; the ignition medicine box 5 is fixedly arranged on the end face of the safety ignition mechanism 1 positioned in the shell 7 through a screw; the safe ignition mechanism 1 is characterized in that the safe ignition mechanism internally comprises a safe protection device and 2 insensitive ignition tools, the bottom of the safe ignition mechanism is provided with a flange plate, and the flange plate is provided with a threaded hole for connecting a gunpowder box assembly. After the insensitive ignition tool is ignited, hot gas generated in the safe ignition mechanism 1 is transmitted to the ignition medicine box 5 when the protection device is turned on, and ignition powder in the ignition medicine box 5 is ignited; when the protection device is closed, the transmission channel of the hot gas in the safety ignition mechanism 1 is closed, and the hot gas can not enter the ignition medicine box 5, so that the safety of the solid gas generator can be improved.

Further, ignition medicine box 5 is one end open-ended cylindrical cavity, and the open end is equipped with the ring flange, with 1 fixed connection of safety ignition mechanism, and the other end and lateral wall are equipped with the through-hole, locate the inside ignition medicine of ignition medicine box 5 and ignite the back by safety ignition mechanism 1, and the gas that the ignition medicine burning produced passes through the through-hole and gets into 7 intracavity on the casing, and the release heat makes the burning of propellant powder post subassembly 8.

Further, a plurality of evenly distributed's spray tube installation interface is left to casing 7 confined one end, and casing 7 passes through threaded connection with spray tube 11, and spray tube 11 is the laval spray tube, and one end is the convergent section, through threaded connection in the casing bottom, and the other end is the expansion section, and 11 quantity of spray tube are 3 ~ 5.

Furthermore, the expansion section of the spray pipe is bonded with a membrane through an adhesive, wherein the adhesive is AB glue, and the membrane is celluloid material.

Further, the utility model relates to a solid gas generator, it still includes safety cover 17, and open at the top of end cover 3 has 4 screw holes, safety cover 17 passes through threaded connection with end cover 3, and locates the 7 outsides of casing, covers around safety ignition mechanism 1 for protection safety ignition mechanism 1 avoids safety ignition mechanism 1 to take place mechanical collision in installation and use and causes the damage, and safety cover 17 is the thin wall metalwork, and one end is equipped with the ring flange structure, through the screw mounting in the top of end cover.

Further, the space between the shell 7 and the end cover 3, the space between the safety ignition mechanism 1 and the end cover 3, and the space between the shell 7 and the nozzle 11 are sealed by O-shaped rubber rings.

Furthermore, the shell 7 is of a cavity structure with a flange plate on the outer wall, the shell 7 is connected with the end cover 3, a cavity structure with a cylinder in the middle and cambered surfaces at two end faces is formed in the shell, and the flange plate is used for integrally fixing the solid gas generator in the launching tube;

further, casing 7 is whole machine-shaping, the both ends of end cover 3 are cylindrical, and both ends are equipped with the screw thread of being connected with casing 7 and safety ignition mechanism clamping ring 16 respectively, and 3 main aspects of end cover are connected with casing 7, and the tip is connected with safety ignition mechanism clamping ring 16, passes through one section arc structure transition between the main aspects and the tip of end cover 3.

The propellant grain is preferably a high-burning-speed micro-smoke propellant developed and produced by Hubei space chemical technology research institute, the propellant has high burning speed (8MPa, more than 37mm/s) and low burning temperature (about 1100 ℃); the ignition powder is composed of potassium Boronitrate (BPN), small-particle black powder and ignition powder (block-shaped, the formula is the same as that of the propellant grain), and is also suitable for conventional propellants and ignition powder in the prior art.

Example 1

As shown in fig. 1, the utility model discloses a safety ignition mechanism 1, first screw 2, end cover 3, ignition powder 4, ignition medicine box 5, first O shape sealing washer 6, casing 7, propellant powder post subassembly 8, second screw 9, second O shape sealing washer 10, spray tube 11, diaphragm 12, third screw 13, first nut 14, third O shape sealing washer 15, safety ignition mechanism clamping ring 16, safety protection cover 17.

One end of the end cover 3 is tightly pressed in the end cover 3 by a safe ignition mechanism compression ring 16 and is sealed by a third O-shaped sealing ring 15, and the safe ignition mechanism 1 comprises two insensitive ignition tools and a protection device; the end face of the safety ignition mechanism 1, which is positioned in the shell 7, is connected with an ignition medicine box 5 through a third screw 13 and a first nut 14, and ignition medicine 4 is arranged in the ignition medicine box 5; the protective cover 17 is arranged at the small end of the end cover 3 through the first screw 2; the large end of the end cap 3 is connected to the housing 7 by a screw thread and is sealed by a first O-ring 6. 4 small bosses which are uniformly distributed are reserved in the shell 7, threaded holes are formed in the bosses, and the propellant grain components 8 are fixed in the cavity of the shell 7 through the threaded holes by second screws 9; the bottom (namely the closed end) of the shell 7 is provided with 5 threaded hole bosses which are uniformly distributed and used for being connected with the spray pipe 11, the spray pipe 11 and the shell 7 are sealed through a second O-shaped sealing ring 10, and the outlet expansion section of the spray pipe 11 is bonded with a membrane 12 through an adhesive and used for sealing the inner cavity of the solid gas generator.

In fig. 1, the engine housing 7 and the end cover 3 are integrally formed in one-step machining mode, and are made of alloy steel, so that the engine housing is good in machinability, can bear high working pressure, and can meet the structural strength requirement. The outer wall of the shell 7 is provided with a flange, and the solid gas generator is arranged in the missile launching tube through 8 through holes uniformly distributed on the flange.

As shown in fig. 2, the safety ignition mechanism pressure ring 16 is provided with an external thread for connecting with the end cover 3, 4 trapezoidal grooves are uniformly arranged on one side facing the outside of the shell 7 along the circumferential direction, the cross section of each trapezoidal groove is in a trapezoidal shape with a narrow top and a wide bottom, the trapezoidal grooves are connected with a tool, so that the pressure ring can be conveniently screwed by applying torque, and the safety ignition mechanism 1 is tightly pressed on the end cover 3 by screwing the safety ignition mechanism pressure ring 16;

as shown in fig. 3, the propellant grain assembly 8 comprises 4 propellant grains 21, and the propellant grains 21 are in an inner circular hole and outer slotted combustion grain shape, so that the performance requirements of quick combustion and large gas production of the generator grains can be met; the propellant grain 21 is fixed by an upper medicine baffle plate 19 and a lower medicine baffle plate 22, the upper medicine baffle plate 19 and the lower medicine baffle plate 22 are connected by a support rod 20 and are compressed by a second nut 18.

As shown in fig. 4, the propellant grain 21 comprises two end burning-limiting layers 23, an outer supporting cylinder 25 and a main propellant 26, wherein the main propellant 26 is connected with the supporting cylinder 25 through a lining layer 24; the supporting cylinder 25 is made of stainless steel, and can ensure the integrity of the propellant main grain.

As shown in fig. 5, 5 bosses with threaded holes are uniformly distributed on the bottom of the housing 7 and are connected with the spray pipe 11 through the threaded holes, wherein the spray pipe structure is a typical laval spray pipe.

The working principle of the multi-nozzle high-pressure-intensity ejection gas generator is as follows: when the missile needs to be ejected out of the barrel, a safety protection device of the safety ignition mechanism 1 is turned on, specifically, the safety protection device is a piston, a system sends an ignition instruction, a lead connected with a insensitive igniter is electrified to enable the insensitive igniter to ignite and work, ignition powder 4 in an ignition medicine box 5 is ignited instantly, the ignition powder burns to ignite a propellant powder column 21, the powder column burns to generate high-temperature and high-pressure hot gas in a generator combustion chamber, the hot gas breaks through a membrane 12 at a spray pipe 11 at the bottom of a shell 7 and is sprayed into the missile launching barrel through 5 spray pipes 11, the hot gas in the launching barrel pushes the missile to move to generate continuously changing acceleration, and the missile is ejected out of the barrel at a preset speed.

The present invention has been described in detail with reference to the specific embodiments and the exemplary embodiments, but the description should not be construed as limiting the present invention. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and embodiments thereof without departing from the spirit and scope of the present invention, and all fall within the scope of the present invention. The protection scope of the present invention is subject to the appended claims.

The details of the present invention not described in detail in the specification are well known to those skilled in the art.

Claims (10)

1. A solid gas generator, characterized by comprising an ignition assembly, an end cap (3), a housing (7), a propellant charge assembly (8) and a lance (11);

one end of the shell (7) is open, the open end is connected with the end cover (3), and the other end is provided with a spray pipe (11); the ignition assembly is fixed at the opening end of the shell (7) through the end cover (3); the propellant grain assembly (8) is fixed inside the shell (7); after the ignition assembly ignites the propellant grain assembly (8), the generated high-temperature and high-pressure gas is sprayed out through the spray pipe (11);

the propellant grain assembly (8) comprises a grain baffle plate and a propellant grain (21); the medicine blocking plates are fixed at two ends of the propellant grain (21) and used for compressing the propellant grain (21).

2. A solid gas generator as claimed in claim 1, characterized in that the propellant charge assembly (8) further comprises a support rod (20); the medicine blocking plate is provided with holes matched with the supporting rod (20), the supporting rod (20) penetrates through the holes in the medicine blocking plates at two ends of the propellant grains (21), and the propellant grains (21) are compressed after being fixed through the nuts (18).

3. A solid gas generator as claimed in claim 2, characterized in that the propellant charge (21) is provided with a through hole therein, through which the support rod (20) extends and engages with the shutter.

4. A solid gas generator as claimed in claim 1, characterized in that the number of propellant grains (21) is 3 to 5; every propellant grain (21) is including a support section of thick bamboo (25), main propellant (26), and limit for fire layer (23), inside a support section of thick bamboo (25) was arranged in to main propellant (26), both ends are equipped with limit for fire layer (23).

5. A solid gas generator as claimed in claim 1, characterized in that said ignition assembly comprises a safety ignition mechanism (1) and an ignition cartridge (5); the safety ignition mechanism (1) is fixed at the opening end of the shell (7) through the end cover (3), the safety ignition mechanism (1) compresses the end cover (3) through the safety ignition mechanism compression ring (16), and the safety ignition mechanism (1) is connected with the end cover (3) through threads; the ignition medicine box (5) is fixedly arranged on the end face of the safe ignition mechanism (1) positioned in the shell (7).

6. A solid gas generator as claimed in claim 5, characterized in that the safety ignition mechanism (1) is internally provided with a safety protection device and a passive ignition device, after ignition of the passive ignition device, the hot combustion gases generated inside the safety ignition mechanism (1) are transmitted to the ignition cartridge (5) when the safety protection device is turned on.

7. A solid gas generator as claimed in claim 5, characterized in that said ignition cartridge (5) is a cylindrical chamber with an open end, the open end being fixedly connected to the safety ignition mechanism (1), the other end and the side wall being provided with through holes, the ignition charge arranged inside the ignition cartridge (5) being ignited by the safety ignition mechanism (1) to release heat to burn the propellant charge assembly (8).

8. The solid gas generator as claimed in claim 1, characterized in that the housing (7) is screwed to the lances (11), the lances (11) being laval lances in a number of 3 to 5.

9. The solid gas generator according to claim 1, further comprising a protective cover (17), wherein the protective cover (17) is screwed to the end cap (3) and is provided outside the housing (7) for protecting the ignition assembly.

10. A solid gas generator as claimed in claim 5, characterized in that the sealing between the housing (7) and the end cover (3), between the safety ignition mechanism (1) and the end cover (3) and between the housing (7) and the lance (11) is provided by O-ring rubber seals.

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