WO2023108567A1

WO2023108567A1 - Catalyst sowing device and high-temperature-resistant precipitation-increasing rocket having same

Info

Publication number: WO2023108567A1
Application number: PCT/CN2021/138922
Authority: WO
Inventors: 刘盛嘉; 孙巨川; 邱冬磊; 汪春梅; 常玉春; 李龙; 武玉忠
Original assignee: 陕西中天火箭技术股份有限公司
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2023-06-22

Abstract

A catalyst sowing device and a high-temperature-resistant precipitation-increasing rocket having the catalyst sowing device. The catalyst sowing device comprises a main body portion (21) and a catalyst core (22); an accommodating cavity is provided in the main body portion (21), and a sowing channel (2121) is provided on the main body portion (21); the catalyst core (22) comprises a warm cloud catalyst, the catalyst core (22) is mounted in the accommodating cavity, and an ignition channel (221) extending along the length direction of the catalyst core (22) is provided in the catalyst core (22). The catalyst sowing device further comprises a main ignition portion (23) and a first auxiliary ignition portion (24), so as to prevent occurrence of a phenomenon that the catalyst core (22) cannot be ignited. Ignition from both ends can also realize transfer from both ends to the middle, so that the ignition efficiency of the catalyst core (22) is higher.

Description

Catalyst spreading device and high-temperature-resistant rain-increasing rocket equipped with it

technical field

The present application relates to the technical field of rain-increasing equipment, in particular to a catalyst spreading device and a high-temperature-resistant rain-increasing rocket equipped with it.

Background technique

Artificial precipitation refers to artificially supplementing certain necessary conditions for the formation of precipitation according to the principle of natural precipitation formation, so as to promote the rapid condensation or collision of cloud droplets and increase into raindrops, which fall to the ground. The method is to choose the right time according to the physical characteristics of different clouds, and use airplanes and rockets to sow catalysts into the clouds to make the clouds precipitate or increase the precipitation, so as to relieve or alleviate the drought, increase the irrigation water volume or water supply capacity of the reservoir, or increase the water volume for power generation. wait.

In the field of artificial weather modification, the rain enhancement and hail prevention rocket is a major tool for artificial rainfall enhancement and hail prevention operations. At present, the rain-enhancing hail-proof rocket is mainly composed of a solid rocket motor, a spreading system, and a recovery or self-destruction system. The AgI catalyst is spread through the spreading system to achieve rainfall enhancement.

In some areas, droughts and water shortages are frequent, and artificial precipitation operations are very much needed. Since the summer temperature in this area can reach as high as 50°C or even 60°C in some areas, the catalytic efficiency of AgI will be greatly reduced under high temperature conditions, which will affect the effect of rain enhancement; ordinary engine grains will also become soft under high temperature conditions, and the structure destroyed, and even exploded. And some plastic parts will lose strength at high temperature. Therefore, the rain-increasing and hail-proof rockets of related technologies cannot function under high temperature conditions higher than 50° C., and have potential safety hazards.

technical problem

One of the purposes of the embodiments of the present application is to provide a catalyst spreading device and a high-temperature-resistant rain-increasing rocket equipped therewith, aiming to solve the problem that the rain-increasing rocket in the related art cannot work normally in a high-temperature environment.

technical solution

In order to solve the above-mentioned technical problems, the technical solution adopted in the embodiment of the present application is:

In a first aspect, a catalyst spreading device is provided. The catalyst spreading device includes: a main body having a housing cavity inside, a spreading channel is provided on the main body, and an opening is formed on the side wall of the main body at the first end of the spreading channel. , the second end of the spreading channel communicates with the housing chamber; the catalyst core body, the catalyst core body includes a warm cloud catalyst, the catalyst core body is installed in the housing chamber, and the inside of the catalyst core body has an ignition channel extending along the length direction of the catalyst core body; the catalyst core body The spreading device also includes a main ignition part and a first auxiliary ignition part, the ignition end of the main ignition part is passed through the ignition channel from the first end of the ignition channel; the first auxiliary ignition part is arranged at the second end of the ignition channel.

In one embodiment, the catalyst spreading device further includes a blocking cover, which is detachably installed in the spreading channel, and has an interference fit with the spreading channel, and is used to block the spreading channel; the pressure inside the accommodating chamber reaches a preset pressure In the case of , the blocking cap can be pushed out by the pressure inside the housing chamber to open the spreading channel.

In one embodiment, the main body part includes a housing and a spreading seat, the main ignition part is installed on the spreading seat, the accommodation chamber is arranged inside the housing, the accommodation chamber forms an installation opening at the first end of the housing, and the spreading seat is installed on the housing. The first end of the body and the installation opening are blocked; the spreading channel is set in the spreading seat, and the first end of the spreading channel forms an opening on the side wall of the spreading seat.

In one embodiment, a medicine baffle is arranged inside the second end of the housing, and the medicine baffle forms the end surface of the end of the accommodating chamber away from the installation port, and the first auxiliary ignition part is arranged on the side of the medicine baffle close to the catalyst core. side.

In one embodiment, there are multiple spreading channels and blocking covers, the multiple spreading channels are centered on the axis of the main body, and are arranged equiangularly along the circumferential direction of the main body, and the multiple blocking covers are installed one by one. in multiple spreading channels.

In one embodiment, a concave cavity is provided on a side of the blocking cover close to the second end of the spreading channel.

In one embodiment, the catalyst spreading device further includes a plurality of second auxiliary ignition parts, and the plurality of second auxiliary ignition parts are arranged on the side wall of the accommodation chamber at intervals along the circumferential direction of the accommodation chamber.

In one embodiment, the warm cloud catalyst includes CaCl, KCl.

In one embodiment, the blocking cover is made of elastic material, and a protruding point is provided at the opening of the spreading channel, and the protruding point extends toward the axis of the spreading channel.

In one embodiment, a heat insulation cavity is provided inside the shell wall of the housing, and the heat insulation cavity is filled with heat insulation material.

In the second aspect, a high-temperature-resistant rain-increasing rocket is provided. The high-temperature-resistant rain-increasing rocket includes a rocket head, a catalyst spreading device, a propulsion device, and an empennage device connected in sequence. The catalyst spreading device is the above-mentioned catalyst spreading device, and the rocket head Including the fairing and the parachute assembly installed inside the fairing, the fairing is made of polybutylene adipamide.

In one embodiment, the propelling device includes a cylinder and a propulsion igniter installed at the first end of the cylinder, a medicine cavity is arranged inside the cylinder, a charge column is installed inside the medicine cavity, and the ignition end of the propulsion igniter is pierced through the Inside the drug column; the first end of the cylinder is connected to the end of the catalyst spreading device, and the second end of the cylinder is provided with an injection port, which communicates with the drug cavity.

In one embodiment, the grains are dicobalt grains.

In one embodiment, the empennage device is sheathed on the second end of the barrel, and the empennage device is made of polybutylene adipamide.

In one embodiment, the end of the main body away from the rocket head is provided with a docking port, the first end of the barrel is provided with a docking boss, the side wall of the docking post is provided with external threads, the inner wall of the docking port is provided with internal threads, and the butt joint The boss is screwed in the docking port and is threadedly connected with the docking port; the main ignition part is connected with the propulsion igniter through a lead wire, and a delay part is arranged between the main ignition part and the propulsion igniter.

Beneficial effect

The beneficial effect of the catalyst spreading device provided in the embodiment of the present application is that the catalyst core of the catalyst spreading device in this embodiment adopts a warm cloud catalyst suitable for catalytic precipitation enhancement under warm cloud conditions (the temperature of the cloud layer is above 0°C). The catalyst produces rainfall through its own hygroscopic condensed water droplets, which can adapt to high-temperature environment to increase rainfall. In order to prevent the warm cloud catalyst from being unable to complete the ignition smoothly, this embodiment adopts the way that the main ignition part and the first auxiliary ignition part jointly complete the ignition, and distribute them at the end of the catalyst core in the length direction. Both ends of the catalyst have ignition points to prevent the phenomenon that the catalyst core cannot be ignited. Ignition from both ends can also realize transfer from both ends to the middle, so that the ignition efficiency of the catalyst core is higher.

The beneficial effect of the high-temperature-resistant rain-increasing rocket provided by the embodiment of the present application is that the fairing of the rocket head is made of polybutylene adipamide. The fin assembly is made of polybutylene adipamide. Polybutylene adipamide 46, also known as PA46. In the parts where aerodynamic heating is more serious, such as the rocket head and tail, PA46 material is used, which has better strength and better thermal performance, and can ensure no deformation and insufficient strength under the condition of ensuring aerodynamic heating, ensuring rocket flight temperature.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments or exemplary technical descriptions. Obviously, the accompanying drawings in the following descriptions are only for this application. For some embodiments, those skilled in the art can also obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of a high-temperature-resistant rain-increasing rocket provided by an embodiment of the present application;

Fig. 2 is a schematic diagram of the internal structure of the catalyst spreading device provided by the embodiment of the present application;

Fig. 3 is an enlarged view of area A in Fig. 2;

Fig. 4 is a schematic diagram of the internal structure of the propulsion device provided by the embodiment of the present application;

Fig. 5 is a schematic diagram of the internal structure of the rocket head provided by the embodiment of the present application;

The details of the labels involved in the above drawings are as follows:

10. Rocket head; 11. Fairing; 12. Parachute assembly; 13. Butt joint; 14. Parachute ignition part; 15. Second delay part; 16. Piston; edge; 20, catalyst spreading device; 21, main body; 211, shell; 212, spreading seat; 2121, spreading channel; 2122, bump; 22, catalyst core; 221, ignition channel; 23, main ignition part; 24. First auxiliary ignition part; 25. Blocking cover; 251. Recessed cavity; 26. Drug retaining plate; 27. Docking port; 28. Delay part; 30. Propelling device; 31. Cylinder body; ; 33, powder column; 34, injection port; 35, docking boss; 40, empennage device.

Embodiments of the present invention

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present application.

It should be noted that when a component is referred to as being “fixed on” or “disposed on” another component, it may be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are for convenience of description only, rather than indicating or implying the referred device Or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the application, and those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations. The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of technical features. "Plurality" means two or more, unless otherwise clearly and specifically defined.

In order to illustrate the technical solutions provided by the present application, detailed descriptions will be given below in conjunction with specific drawings and embodiments.

Artificial precipitation refers to artificially supplementing certain necessary conditions for the formation of precipitation according to the principle of natural precipitation formation, so as to promote the rapid condensation or collision of cloud droplets and increase into raindrops, which fall to the ground. The method is to choose the right time according to the physical characteristics of different clouds, and use airplanes and rockets to sow catalysts into the clouds to make the clouds precipitate or increase the precipitation, so as to relieve or alleviate the drought, increase the irrigation water volume or water supply capacity of the reservoir, or increase the water volume for power generation. wait. In the field of artificial weather modification, the high temperature resistant rain enhancement rocket is a major tool for artificial rain enhancement and hail prevention operations. At present, the high-temperature rain-increasing rocket is mainly composed of a solid rocket motor, a spreading system, and a recovery or self-destruct system. The AgI catalyst is spread through the spreading system to achieve rain-enhancing. In parts of the Middle East, droughts and water shortages are frequent, making artificial precipitation operations a necessity. Since the summer temperature in this area can reach as high as 50°C or even 60°C in some areas, the catalytic efficiency of AgI will be greatly reduced under high temperature conditions, which will affect the effect of rain enhancement; ordinary engine grains will also become soft under high temperature conditions, and the structure destroyed, and even exploded. And some plastic parts will lose strength at high temperature. Therefore, the high-temperature-resistant rain-increasing rocket of the related art cannot function under high-temperature conditions higher than 50° C., and has potential safety hazards.

In order to solve the above problems, as shown in FIGS. 1 to 5, according to the first aspect of the present application, a catalyst spreading device is provided. The catalyst spreading device includes a main body 21 and a catalyst core 22, and the main body 21 has an accommodation chamber inside , the main body 21 is provided with a sowing channel 2121, the first end of the sowing channel 2121 forms an opening on the side wall of the main body 21, and the second end of the sowing channel 2121 communicates with the containing chamber; the catalyst core 22 includes a warm cloud catalyst, The catalyst core 22 is installed in the housing chamber, and the inside of the catalyst core 22 has an ignition channel 221 extending along the length direction of the catalyst core 22; the catalyst spreading device also includes a main ignition part 23 and a first auxiliary ignition part 24, the main ignition part 23 The ignition end of the ignition channel passes through the ignition channel 221 from the first end of the ignition channel 221 ; the first auxiliary ignition part 24 is disposed at the second end of the ignition channel 221 . The catalyst core of the catalyst spreading device in this embodiment adopts a warm cloud catalyst suitable for catalyzing rainfall enhancement under warm cloud conditions (the cloud layer temperature is above 0°C). It is only suitable for catalytic precipitation enhancement under cold cloud conditions (cloud temperature is below 0°C). It forms artificial ice nuclei and water vapor to form water droplets for rainfall. At 15°C, the nucleation rate of 1g AgI can only reach 10 ¹² At -15°C, it can reach the order of 10 ¹⁵ , and as the temperature rises, the nucleation rate further decreases, which makes the catalytic rain-enhancing efficiency of the AgI catalyst seriously insufficient above 0°C.

In this embodiment, the use of warm cloud catalyst can effectively improve the rain-increasing efficiency above 0°C. Since the ignition of the warm cloud catalyst is more difficult, in order to prevent the warm cloud catalyst from being able to complete the ignition smoothly, this embodiment adopts the main ignition part 23 and the second An auxiliary ignition part 24 jointly completes the ignition, and is distributed at the end of the catalyst core 22 in the length direction. Specifically, after the catalyst spreading device is launched into the sky, the main ignition part 23 and the first auxiliary ignition part 24 work together to ignite the two ends of the catalyst core 22 in the length direction respectively, so that both ends of the catalyst are It has an ignition point to prevent the phenomenon that the catalyst core body 22 cannot be ignited. Ignition from both ends can also realize transfer from both ends to the middle, so that the ignition efficiency of the catalyst core body 22 is higher. In one embodiment, the warm cloud catalyst includes CaCl and KCl. In order to assist the combustion of CaCl and KCl, the warm cloud catalyst also includes oxidants such as KClO ₄ .

Wherein, the ignition channel 221 may penetrate the catalyst core body 22 along the length direction of the catalyst core body 22 or may not penetrate through it.

As an embodiment, the ignition channel 221 runs through the catalyst core body 22 along the length direction of the catalyst core body 22, which helps to form an ignition area between the main ignition part 23 and the first auxiliary ignition part 24 that can penetrate the length direction of the catalyst core body 22. , so as to improve the uniformity of ignition in the length direction of the catalyst core 22, improve the ignition efficiency, and generate high-temperature combustion gas after the main ignition part 23 is ignited, and the high-temperature combustion gas can reach the first auxiliary ignition part 24 through the through ignition channel 221, realizing the For the ignition of the first auxiliary ignition part 24 , the first auxiliary ignition part 24 does not need to perform ignition control independently, and the automatic ignition of the first auxiliary ignition part 24 is realized. In this embodiment, both the main ignition part 23 and the first auxiliary ignition part 24 use black powder ignition equipment, such as a black powder igniter with a nozzle.

As an implementation, the ignition channel 221 is non-through, that is, the ignition channel 221 is divided into two sections, the first section is used to accommodate the main ignition part 23 , and the second section is used to accommodate the first auxiliary ignition part 24 . Different from the previous embodiment, in this embodiment, the first auxiliary ignition part 24 cannot be ignited by the main ignition part 23. Therefore, the first auxiliary ignition part 24 in this embodiment needs to cooperate with other control equipment to ignite. Such as radio control, etc., in the implementation of using radio control to ignite the first auxiliary ignition part 24, the first auxiliary ignition part 24 also includes an igniter that can be controlled by radio in addition to the black powder column 33, so as to realize the first Remote ignition of the secondary ignition section 24. In order to grasp the ignition timing of the first auxiliary ignition part 24, a temperature detection device is arranged at one end of the ignition channel 221 near the main ignition part 23 in the present embodiment, and the temperature detection device can detect whether the main ignition part 23 has burned, And transmit the data to the first auxiliary ignition part 24 or the ground control terminal, the ignition time of the main ignition part 23 can be accurately grasped through the data, and then the ignition time of the first auxiliary ignition part 24 can be precisely controlled, and the ignition time of the catalyst core can be further improved. efficiency.

In order to further prevent the problem that the catalyst core 22 of this embodiment cannot be ignited smoothly, in one embodiment, the catalyst spreading device also includes a blocking cover 25, which is detachably installed in the spreading channel 2121, and is connected with the spreading channel 2121 interference fit, or adhesive fit, is used to block the spreading channel 2121; when the pressure inside the containing cavity reaches a preset pressure, the blocking cover 25 can be pushed out by the pressure inside the containing cavity to open the spreading channel 2121. The spreading channel 2121 is blocked by the blocking cover 25, so that the pressure and temperature in the containing chamber during ignition can be effectively increased, thereby ensuring that the catalyst core 22 can be reliably ignited. When the pressure inside the accommodation chamber reaches the preset pressure, the blocking cover 25 will be pushed open by the pressure, thereby opening the spreading channel 2121 , so that the catalyst is spread out from the spreading channel 2121 .

In order to facilitate the filling of the catalyst core 22, in one embodiment, the main body 21 includes a housing 211 and a spreading seat 212, the main ignition part 23 is installed on the spreading seat 212, and the accommodation chamber is arranged inside the housing 211. The first end of the housing 211 forms an installation port, and the spreading seat 212 is installed on the first end of the housing 211, and blocks the installation port; the spreading channel 2121 is arranged in the spreading seat 212, and the first end of the spreading channel 2121 is in the spreading seat. Openings are formed on the side walls of 212 . During installation, the operator can load the catalyst core 22 into the housing 211 from the installation opening, and then install the spreading seat 212 on one end of the housing 211, so that the spreading seat 212 blocks the installation opening. As an embodiment, the outer wall of the spreading seat 212 is provided with external threads, and the inner wall of the installation opening is provided with internal threads, and the external threads cooperate with the internal threads to realize the fixing of the spreading seat 212 . As other embodiments, riveting, screwing, etc. may also be used between the spreading seat 212 and the casing 211 .

In order to form an airtight accommodating chamber, prevent the gunpowder from leaking out of the accommodating chamber, and affect the normal operation of other equipment, and in order to ensure the pressure and temperature inside the accommodating chamber, in one embodiment, the second end of the housing 211 is provided with a baffle The medicine plate 26 , the medicine shield 26 forms the end face of the receiving chamber away from the installation port, and the first auxiliary ignition part 24 is arranged on the side of the medicine shield 26 close to the catalyst core 22 . In this embodiment, the drug blocking plate 26 forms the end face of the containing cavity, cooperates with the spreading seat 212 to make the containing cavity a well-sealed cavity, and meanwhile the drug blocking plate 26 provides an installation position for the first auxiliary ignition part 24 .

Since the housing 211 is relatively long, in order to facilitate the installation of the first auxiliary ignition part 24, as an embodiment, the housing 211 has an inner cavity that runs through the housing 211 along the length direction of the housing 211. The ends respectively form the first installation port and the second installation port. The first auxiliary ignition part 24 is pre-installed on the drug retaining plate 26. The operator can install the drug retaining plate 26 into the interior of the housing 211 from the second mounting port and fix it. After completing the installation of the first auxiliary ignition part 24, the operator can install the catalyst core 22 into the casing 211 from the first installation port, and then install the spreading seat 212 on one end of the casing 211, so that the spreading seat 212 blocks the first installation opening, and forms an accommodating cavity between the medicine retaining plate 26 and the spreading seat 212 . As an embodiment, the outer wall of the spreading seat 212 is provided with external threads, and the inner wall of the first installation opening is provided with internal threads, and the external threads cooperate with the internal threads to realize the fixing of the spreading seat 212 . Similarly, the connection between the drug blocking plate 26 and the inner wall of the second installation port can also be realized through thread fit.

In order to achieve uniform spreading and improve spreading efficiency, in one embodiment, there are multiple spreading channels 2121 and blocking covers 25, and the multiple spreading channels 2121 are centered on the axis of the main body 21 along the circumferential direction of the main body 21. Arranged equiangularly at intervals, a plurality of blocking covers 25 are installed in the plurality of spreading channels 2121 in one-to-one correspondence. When the pressure inside the receiving chamber reaches the preset pressure, the plurality of blocking caps 25 can be respectively pushed out by the pressure inside the receiving chamber to open the spreading channel 2121 . The plurality of spreading channels 2121 are respectively blocked by the plurality of blocking caps 25, so that the pressure and temperature in the containing chamber during the ignition process can be effectively increased, thereby ensuring that the catalyst core 22 can be reliably ignited. When the pressure inside the containing chamber reaches the preset pressure, each blocking cover 25 will be pushed open by the pressure, thereby opening a plurality of spreading channels 2121 , so that the catalyst is spread out from a plurality of spreading channels 2121 at different angles.

In order to prevent some of the multiple blocking covers 25 from being pushed open by the internal pressure of the housing cavity first, and make other blocking covers 25 unable to receive sufficient pressure, resulting in failure to open smoothly, as an embodiment, along the circumferential direction of the main body 21, There is a connecting portion between two adjacent blocking caps 25, and the connecting portion may be a connecting rope, or the connecting portion is integrally formed with the blocking caps 25 located at both ends of the connecting portion. When one of the two blocking caps 25 is pushed back by the pressure inside the housing chamber, and the other is not pushed back, because the blocked cap 25 that is pushed back has a certain speed, it can be given to the non-backed one by the connecting portion. The blocking cover 25 has a pulling force, thereby helping the blocking cover 25 that has not been pushed away by the internal pressure of the accommodation chamber to disengage from the spreading channel 2121, opening the corresponding spreading channel 2121, avoiding the waste of catalyst, and realizing multi-angle spreading.

As one embodiment, a plurality of blocking caps 25 adjacent to each other along the circumferential direction of the main body 21 have connecting parts between them. The angle between 21 circles upward is less than 180°. The connecting part may be a connecting rope, or the connecting part is integrally formed with the blocking caps 25 located at both ends of the connecting part. When one or more of the plurality of blocking caps 25 is pushed away by the pressure inside the containing chamber, and the others are not pushed away, because the blocked caps 25 that are pushed away have a certain speed, they can be given to the unroofed parts by the connecting portion. The opened blocking cover 25 has a pulling force, thereby helping the blocking cover 25 that has not been pushed away by the internal pressure of the accommodation chamber to disengage from the spreading channel 2121, opening the corresponding spreading channel 2121, avoiding the waste of catalyst, and realizing multi-angle spreading.

In order to enable the blocking cap 25 to turn over without being deflected before being pushed out by the pressure inside the containing chamber, which will affect the discharge of the blocking cap 25, in one embodiment, the blocking cap 25 is arranged on a side close to the second end of the spreading channel 2121 There is a concave cavity 251, and the concave cavity 251, the blocking cover 25 and the spreading channel 2121 are arranged coaxially. On the one hand, the guide is realized by cooperating the side wall of the blocking cover 25 with the inner wall of the spreading channel 2121; The force is directed to the opening of the spreading channel 2121 in a balanced manner, preventing the blocking cover 25 from turning over during the process of being pushed out.

In the above-mentioned embodiment, since the plugging cover 25 is provided with the concave cavity 251, part of the catalyst will enter the cavity 251. After the plugging cover 25 is separated from the spreading channel 2121, this part of the catalyst located in the concave cavity 251 cannot be optimally spread. Catalyst is wasted. Therefore, in one embodiment, the blocking cover 25 is made of elastic material, such as elastic plastic, and the opening of the spreading channel 2121 is provided with a convex point 2122, and the convex point 2122 extends toward the axis of the spreading channel 2121. The bumps 2122 in this embodiment are mainly used to turn over the blocking cover 25 at the moment when it is detached from the opening of the spreading channel 2121 , and then spread the catalyst inside the concave cavity 251 in a way of turning over. Specifically, after the blocking cover 25 is pushed to the opening of the spreading channel 2121 by the pressure inside the containing chamber, one side of the blocking cover 25 will be stopped by the raised point 2122, thereby causing the speed of this side to be slower than that of the other side opposite to this side. The speed of one side, so that the moment when the blocking cover 25 is disengaged from the opening of the spreading channel 2121, the overturn occurs. Since the blocking cover 25 is made of elastic material, it can also avoid the blocking cover 25 being blocked at the opening of the spreading channel 2121 after being stopped by the convex point 2122, and the blocking cover 25 can be smoothly disengaged through a certain elastic deformation. As an implementation manner, the upper surface of the bump 2122 has a smooth transition.

In the above embodiment, the main ignition part 23 and the first auxiliary ignition part 24 can be used to realize the end-to-end ignition of the catalyst core 22 in the length direction. The outer ignition is different from the previous embodiment in that in this embodiment, it also has an ignition function from the outside to the inside centering on the axis of the catalyst core 22, thereby further improving the ignition efficiency. In one embodiment, the catalyst spreading device further includes a plurality of second auxiliary ignition parts, and the plurality of second auxiliary ignition parts are arranged on the side wall of the accommodation chamber at intervals along the circumferential direction of the accommodation chamber. The second auxiliary ignition part in this embodiment needs to cooperate with other control equipment to ignite, such as radio control, etc. In the embodiment where the second auxiliary ignition part is controlled by radio, except for the black powder column 33, the second auxiliary ignition part Also included is a radio controllable igniter for remote ignition of the second secondary ignition. In order to grasp the ignition timing of the second auxiliary ignition part, a temperature detection device is provided at one end of the ignition channel 221 close to the main ignition part 23 in this embodiment. The temperature detection device can detect whether the main ignition part 23 has burned, and The data is transmitted to the second auxiliary ignition part or the ground control terminal, through which the ignition time of the main ignition part 23 can be accurately grasped, and then the ignition time of the second auxiliary ignition part can be precisely controlled to further improve the ignition efficiency of the catalyst core. In other embodiments, the second auxiliary ignition part can also be connected with the main ignition part through a lead wire, and after the main ignition part is ignited, the lead wire can be ignited at the same time, and the lead wire reaches the second auxiliary ignition part, and then the second auxiliary ignition part is ignited.

In order to further prevent the external temperature from affecting the internal state of the catalyst spreading device, in one embodiment, a heat-insulating cavity is provided inside the shell wall of the housing 211, and the inside of the heat-insulating cavity is filled with a heat-insulating material, which may be asbestos , glass fiber, etc.

According to the second aspect of the present application, a kind of high-temperature-resistant rain-increasing rocket is provided, and the high-temperature-resistant rain-increasing rocket includes rocket head 10, catalyst spreading device 20, propulsion device 30 and empennage device 40 connected in sequence, and catalyst spreading device 20 is In the above-mentioned catalyst spreading device, the rocket head 10 includes a fairing 11 and a parachute assembly 12 installed inside the fairing 11, and the fairing 11 is made of polybutylene adipamide. Polybutylene adipamide, also known as PA46, or polybutylene adipamide 46. In one embodiment, the empennage device 40 is sheathed on the second end of the cylinder body 31 , and the empennage device 40 is made of polybutylene adipamide. In the parts where aerodynamic heating is more serious, such as the rocket head 10 and the tail fin, nylon PA46 material is used, which is used as an injection molding material. Compared with the more commonly used ABS plastic (Acrylonitrile Butadiene Styrene plastic) has better strength and better thermal performance, and can ensure pneumatic heating without deformation and insufficient strength. According to the aerodynamic heating calculation, when the ambient temperature is 70°C, the temperature of the sharp point of the rocket head 10 and the leading edge of the empennage will reach 100°C-200°C under the influence of aerodynamic heating. Comparing Table 1, it can be seen that the PA46 material will not be thermally deformed However, ABS plastic may be thermally deformed and cause the rocket trajectory to deviate.

the	PA46 PA46	ABS ABS
断裂拉伸强度 tensile strength at break	200 MPa 200MPa	85 MPa 85 MPa
屈服弯曲强度 yield bending strength	280 MPa 280 MPa	110 MPa 110 MPa
0.45Mpa下热变形温度 Heat distortion temperature at 0.45Mpa	280℃ 280°C	105℃ 105°C
1.82MPa下热变形温度 Heat distortion temperature at 1.82MPa	240℃ 240°C	100℃ 100°C

Table 1 Comparison of PA46 and ABS strength and thermal deformation

In order to realize the propulsion launch of the high-temperature-resistant rain-enhancing rocket, in one embodiment, the propulsion device 30 includes a cylinder 31 and a propulsion igniter 32 installed at the first end of the cylinder 31. A powder column 33 is installed inside the cavity, and the ignition end of the propulsion igniter 32 is penetrated in the powder column 33; the first end of the cylinder body 31 is connected with the end of the catalyst spreading device, and the second end of the cylinder body 31 is provided with an injection port 34. The injection port 34 communicates with the drug cavity, and the charge 33 in the drug cavity is ignited by advancing the igniter 32, so that the charge 33 burns, and the gas is ejected from the injection port 34 to generate thrust.

In one embodiment, the grain 33 is a double-cobalt grain (a type of double-base propellant, the main components of which are nitrocellulose and nitroglycerin, and cobalt oxide is added as a combustion catalyst). In order to ensure the storage and normal operation of the grain 33 under the high temperature condition of 50°C-70°C, the engine adopts a double cobalt grain. The thrust performance of the grain 33 changes less with temperature, and the performance is more stable under the condition of large temperature change. The rain-increasing rocket in the related technology uses double lead grains (a kind of double-base propellant, the main components are nitrocellulose and nitroglycerin, and lead oxide is added as a combustion catalyst). The thrust performance of the grains 33 varies greatly with temperature. The structure becomes soft and easy to deform at about 70°C, so it is easy to cause safety problems when used under high temperature conditions.

In one embodiment, the end of the main body 21 away from the rocket head 10 is provided with a docking port 27 , the first end of the barrel 31 is provided with a docking post 35 , and the side wall of the docking post 35 is provided with external threads. The inner wall is provided with an internal thread, and the docking boss 35 is screwed in the docking port 27, and is threadedly connected with the docking port 27, specifically through the cooperation of the external thread and the internal thread; A delay part 28 is provided between the ignition part 23 and the propulsion igniter 32 . Wherein, the time delay part 28 may be a lead wire arranged in a circle, or other time delay mechanism.

In one embodiment, the front end of the fairing 11 of the rocket head 10 is a tip, and the fairing 11 has a cavity inside, and the parachute assembly 12 is installed inside the cavity, and the cavity forms an installation opening at the rear end of the fairing 11, and the rocket The head 10 also includes a butt joint 13 which is detachably installed at the installation opening and blocks the installation opening. The rope of the parachute assembly 12 is connected to the butt joint 13 . An umbrella bag ignition part 14 is arranged on the butt joint 13, and the umbrella bag ignition part 14 is ignited, and the pressure generated can disengage the fairing 11, thereby exposing the parachute to the outside, so that the parachute is opened smoothly.

As an implementation, the high-temperature-resistant rain-increasing rocket in this implementation can complete the functions of launching, sowing, and landing by using its own ignition transmission, without using radio and other equipment, which reduces product costs. In this embodiment, the charge 33 in the propulsion device 30 is ignited by the propulsion igniter 32, so that the charge 33 burns, and the gas is ejected from the injection port 34 to generate thrust, so that the rocket is lifted into the air. The device 32 is connected by a lead wire, and a delay part 28 is arranged between the main ignition part 23 and the propulsion igniter 32. After the propulsion igniter 32 is ignited, the delay part 28 is ignited simultaneously, that is, the delay lead wire. After reaching the height, the flame reaches the main ignition part 23. In this embodiment, the ignition channel 221 runs through the catalyst core body 22 along the length direction of the catalyst core body 22. After the main ignition part 23 is ignited, high-temperature combustion gas is generated, and the high-temperature combustion gas can reach the first auxiliary ignition part 24 through the through ignition channel 221, realizing For the ignition of the first auxiliary ignition part 24 , the first auxiliary ignition part 24 does not need to perform ignition control independently, and the automatic ignition of the first auxiliary ignition part 24 is realized. The main body part 21 is provided with a second docking port 27 away from the end close to the rocket head 10, the butt joint 13 is inserted in the second docking port 27, and is threadedly connected with the second docking port 27; the first auxiliary ignition part 24 is connected with the umbrella The bag ignition part 14 is connected by a lead wire, and a second delay part 15 is arranged between the first auxiliary ignition part 24 and the umbrella bag ignition part 14 . When the first auxiliary ignition part 24 is lit, the second delay part 15 is lit. After the spreading is completed, the flame reaches the umbrella bag ignition part 14, and the umbrella bag ignition part 14 is ignited to generate gas, so that the air pressure of the cowl 11 cups is pushed to Disengage the butt joint 13. Wherein, a piston 16 is arranged between the fairing 11 and the butt joint 13, and the side of the piston 16 toward the umbrella bag ignition part 14 is provided with an air collection chamber 161, and the umbrella bag ignition part 14 is ignited to generate gas that enters the air collection chamber 161 and passes through the piston. 16 collides with the fairing 11 to make it disengage. In this embodiment, the inner flange 17 corresponding to the position of the piston 16 is arranged inside the fairing 11 , and the fairing 11 receives the thrust of the piston 16 through the inner flange 17 . The time delay part 28 can be a lead wire arranged spirally, and can also be other time delay mechanisms. In one embodiment, the tail device is composed of four fins and a tail seat, which is responsible for adjusting the static stability of the rocket and ensuring the stability of the rocket's flight attitude. In this application, each igniter and ignition part are all devices that use black powder to ignite, such as a black powder igniter with a spout.

The above are only optional embodiments of the application, and are not intended to limit the application. For those skilled in the art, various modifications and changes may occur in this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of the claims of the present application.

Claims

A catalyst spreading device, characterized in that the catalyst spreading device comprises:

The main body (21), the main body (21) has a receiving cavity inside, the main body (21) is provided with a spreading channel (2121), the first end of the spreading channel (2121) is in the main body An opening is formed on the side wall of (21), and the second end of the spreading channel (2121) communicates with the accommodation chamber;

A catalyst core (22), the catalyst core (22) includes a warm cloud catalyst, the catalyst core (22) is installed in the accommodating cavity, and the inside of the catalyst core (22) has a An ignition channel (221) extending in the length direction of the core (22);

The catalyst spreading device also includes a main ignition part (23) and a first auxiliary ignition part (24), and the ignition end of the main ignition part (23) is passed through the first end of the ignition channel (221) at the In the ignition channel (221); the first auxiliary ignition part (24) is arranged at the second end of the ignition channel (221).
The catalyst spreading device according to claim 1, characterized in that, the catalyst spreading device further comprises a blocking cover (25), the blocking cover (25) is detachably installed in the spreading channel (2121), and Interference fit with the spreading channel (2121), used to block the spreading channel (2121); when the pressure inside the containing cavity reaches a preset pressure, the blocking cover (25) can be closed by the The pressure inside the containing chamber is pushed out to open the spreading channel (2121).
The catalyst spreading device according to claim 1, characterized in that, the main body (21) includes a casing (211) and a spreading seat (212), and the main ignition part (23) is installed on the spreading seat ( 212), the accommodating cavity is arranged inside the casing (211), the accommodating cavity forms an installation opening at the first end of the casing (211), and the spreading seat (212) is installed on the the first end of the casing (211), and block the installation port; the spreading channel (2121) is set in the spreading seat (212), and the first end of the spreading channel (2121) is in the The opening is formed on the side wall of the spreading seat (212).
The catalyst spreading device according to claim 3, characterized in that, a drug blocking plate (26) is arranged inside the second end of the housing (211), and the drug blocking plate (26) forms the cavity of the accommodating chamber. On the end face of the end away from the installation port, the first auxiliary ignition part (24) is arranged on the side of the drug baffle (26) close to the catalyst core (22).
The catalyst spreading device according to claim 2, characterized in that the spreading channel (2121) and the blocking cover (25) are multiple, and the plurality of spreading channels (2121) are based on the The axis is the center and equiangularly arranged at intervals along the circumference of the main body (21), and a plurality of blocking covers (25) are installed in a plurality of spreading channels (2121) in a one-to-one correspondence.
The catalyst spreading device according to claim 2, characterized in that, a concave cavity (251) is provided on the side of the blocking cover (25) close to the second end of the spreading channel (2121), and the concave cavity (251) . The blocking cover (25) and the spreading channel (2121) are arranged coaxially.
The catalyst spreading device according to any one of claims 1 to 6, characterized in that, the catalyst spreading device further comprises a plurality of second auxiliary ignition parts, and the plurality of second auxiliary ignition parts are arranged along the accommodating cavity. The circumferential intervals are arranged on the side wall of the accommodating cavity.
The catalyst spreading device according to claim 1, wherein the warm cloud catalyst comprises CaCl, KCl.
The catalyst spreading device according to claim 6, characterized in that, the blocking cover (25) is made of elastic material, and the opening of the spreading channel (2121) is provided with bumps (2122), and the bumps are ( 2122 ) extends towards the axis of the spreading channel ( 2121 ).
The catalyst spreading device according to claim 3, characterized in that, a heat-insulating cavity is arranged inside the shell wall of the housing (211), and the inside of the heat-insulating cavity is filled with heat-insulating material.
A high-temperature-resistant rain-increasing rocket, characterized in that the high-temperature-resistant rain-increasing rocket includes a rocket head (10), a catalyst spreading device (20), a propulsion device (30) and an empennage device (40) connected in sequence. The catalyst spreading device (20) is the catalyst spreading device according to any one of claims 1 to 10, and the rocket head (10) includes a fairing (11) and a The parachute assembly (12), the fairing (11) is made of polybutylene adipamide.
The high-temperature-resistant rain-increasing rocket according to claim 11, characterized in that the propulsion device (30) includes a cylinder (31) and a propulsion igniter (32) installed at the first end of the cylinder (31) , the inside of the barrel (31) is provided with a medicine chamber, and the inside of the medicine chamber is installed with a medicine column (33), and the ignition end of the propulsion igniter (32) is pierced in the medicine column (33) ; The first end of the cylinder (31) is connected to the end of the catalyst spreading device, the second end of the cylinder (31) is provided with an injection port (34), and the injection port (34) is connected to the The medicine cavity is connected.
The high-temperature-resistant rain-increasing rocket according to claim 12, characterized in that the grain (33) is a double-cobalt grain.
The high-temperature-resistant rain-increasing rocket according to claim 12, characterized in that, the empennage device (40) is sheathed on the second end of the cylinder (31), and the empennage device (40) is made of polyhexamethylene made from butylenediamide.
The high-temperature-resistant rain-increasing rocket according to claim 13, characterized in that, the end of the main body (21) away from the rocket head (10) is provided with a docking port (27), and the barrel (31) The first end of the docking post (35) is provided with an external thread on the side wall of the docking post (35), the inner wall of the docking port (27) is provided with an internal thread, and the butt post (35) is screwed screwed into the docking port (27), and threaded with the docking port (27); the main ignition part (23) is connected with the propulsion igniter (32) through a lead wire, and the main ignition part ( A delay part (28) is provided between 23) and the propulsion igniter (32).