CN117534531A

CN117534531A - Device and method for regulating and controlling curing residual stress of propellant

Info

Publication number: CN117534531A
Application number: CN202311808850.XA
Authority: CN
Inventors: 徐春广; 常金鹏; 尹鹏; 杨双旭
Original assignee: Beijing Institute of Technology BIT; China Weapon Science Academy Ningbo Branch
Current assignee: Beijing Institute of Technology BIT; China Weapon Science Academy Ningbo Branch
Priority date: 2023-12-26
Filing date: 2023-12-26
Publication date: 2024-02-09

Abstract

The application relates to a device and a method for regulating and controlling the curing residual stress of a propellant, wherein the device comprises: a base; a mold cylinder is arranged above the base; a plurality of groups of stress relief devices are assembled on the outer cylinder wall of the die cylinder along the axial direction of the die cylinder, and each group of stress relief devices comprises a plurality of stress relief devices uniformly distributed along the circumferential direction of the outer cylinder wall of the die cylinder; each stress reduction device comprises a high-energy sound beam transducer and a wedge block connected with the transmitting end of the high-energy sound beam transducer, and one end of the wedge block, which is opposite to the high-energy sound beam transducer, is tightly attached to the outer cylinder wall of the die cylinder; a supporting mechanism is arranged below the base, and a cavity is formed in the supporting mechanism; the high-energy sound beam transducer is arranged below the base and positioned in the cavity of the supporting mechanism, the transmitting end of the high-energy sound beam transducer is connected with a screw, and the top of the screw stretches into a counter bore below the bottom of the mold cylinder. The method is suitable for reducing the residual stress of the propellant.

Description

Device and method for regulating and controlling curing residual stress of propellant

Technical Field

The application relates to the technical field of propellant performance research, in particular to a regulating and controlling device and method for reducing residual curing stress of a propellant.

Background

The propellant material is subjected to thermosetting pouring molding, and the internal residual curing stress is generated and resides, which is inherently generated in the process from raw material preparation to curing molding and is the basic physical property of the propellant material. The solidifying residual stress has important influence on chemical and physical properties such as power, strength, storage life and the like of the propellant in the whole life cycle, and is particularly expressed in deformation and cracking of the propellant of the solid rocket engine in the storage and service processes, so that the safety and reliability of the solid rocket engine are brought with great potential safety hazards of accidental explosion. Therefore, in order to ensure the operational safety of the spacecraft, it is necessary to reduce and homogenize the residual stresses generated inside the propellant.

Conventional methods for reducing residual stress of metal materials are commonly used, such as a heat treatment method, a mechanical impact method and the like, but the conventional methods are not suitable for reducing residual stress of propellant because of heat-sensitive mechanical sensitivity of the propellant, for example, the residual stress of the non-metal material in a colloid state during the curing process of the propellant is not reduced.

Accordingly, a solution suitable for the reduction of residual stresses of propellants is to be provided.

Disclosure of Invention

In view of the above problems of the prior art, the present application provides an apparatus and method for regulating the curing residual stress of a propellant.

To achieve the above object, in a first aspect, the present application provides an apparatus for controlling curing residual stress of a propellant, comprising: a base; a mold cylinder is arranged above the base; a plurality of groups of stress relief devices are assembled on the outer cylinder wall of the die cylinder along the axial direction of the die cylinder, and each group of stress relief devices comprises a plurality of stress relief devices uniformly distributed along the circumferential direction of the outer cylinder wall of the die cylinder; each stress reduction device comprises a high-energy sound beam transducer and a wedge block connected with the transmitting end of the high-energy sound beam transducer, wherein one end of the wedge block, which is opposite to the high-energy sound beam transducer, is tightly attached to the outer cylinder wall of the mold cylinder; a supporting mechanism is arranged below the base, and a cavity is formed in the supporting mechanism; the high-energy sound beam transducer is arranged below the base and positioned in the cavity of the supporting mechanism, the transmitting end of the high-energy sound beam transducer is connected with a screw, and the top of the screw stretches into a counter bore below the bottom of the mold cylinder.

By the method, the high-energy sound beam is transmitted into the propellant slurry in the curing process by means of the high-frequency fluctuation energy of the high-energy sound beam by utilizing the plastic induction effect, so that the mechanical property of the propellant slurry is enhanced, the energy which can resist and eliminate the residual stress generated by the propellant during curing is enough, and the residual stress generated by the inside of the propellant is effectively reduced. Secondly, the particles in the propellant slurry are more compact by introducing high-frequency and small-amplitude high-energy sound beams, so that the leveling property of the surface is improved, the smooth escape of the gas in the propellant slurry is facilitated, the mechanical property and stability of the propellant slurry are further improved, and the internal residual stress is reduced or even avoided.

Therefore, the scheme of the high-energy sound beam regulation and control technology can quickly and effectively eliminate and homogenize residual stress, and has the advantages of low requirement on the surface of a component, easiness in generating various waveforms, short time consumption, low energy consumption, no damage to the component and the like.

Optionally, the mould section is formed by splicing a plurality of sections of same mould section, and the upper cylinder edge and/or the lower cylinder edge of each section of spliced mould section are provided with leakage-proof edges.

By the above, be convenient for assemble, dismantle, applicable not only be applicable to the stress relief of the propellant of co-altitude, this structure not only helps improving production efficiency, still makes the device maintenance more easily. And the tight sealing of the splicing position of the mould shell ring is realized through the leakage-proof edge, so that the liquid is reliably prevented from leaking in the curing process.

Optionally, two adjacent groups of high-energy acoustic beam transducers are arranged in staggered arrangement along the axial direction of the die cylinder section.

By the above, two adjacent layers of high-energy sound beam transducers are arranged in staggered arrangement along the axial direction of the mould cylinder section, and the sound beam energy input of the mould cylinder is more comprehensive and uniform in the whole space. This not only enhances the regulation of the residual stress of the propellant, but also further optimizes the transmission efficiency of the high energy sound beam.

Optionally, the die cylinder further comprises an annular pressing mechanism, wherein the pressing mechanism comprises a plurality of pressing mechanism petals which are sequentially connected into an annular shape, and each stress reduction device is fixed on the outer cylinder wall of the die cylinder through one pressing mechanism petal.

From the above, the structure, shape and the quantity of hold-down mechanism lamella body can be adjusted according to actual demand to satisfy the requirement of different application scenes and mould section of thick bamboo. And the assembly and disassembly processes of the pressing mechanism on the die cylinder are more convenient and efficient.

Optionally, a mounting hole for enabling the high-energy sound beam transducer to pass through is formed in the middle of the hold-down mechanism valve body, a plurality of transducer bolt holes are formed around the periphery of the mounting hole, and the transducer bolt holes are used for fixing wedge blocks connected with the transmitting ends of the high-energy sound beam transducer.

Optionally, the high-energy sound beam transducer transmitting end is provided with a transducer threaded hole, the wedge is provided with a matched threaded protruding rod, and the high-energy sound beam transducer transmitting end is connected with the wedge through the transducer threaded hole and the threaded protruding rod.

By the above, the detachable connection mode of the thread enables the assembly and the disassembly of the connection wedge blocks to be more convenient, and the connection wedge blocks are convenient to replace and adapt to different curvatures of the wall of the mould cylinder.

Optionally, part of the high-energy sound beam transducer is used for playing an excitation role, and part of the high-energy sound beam transducer is used for playing a receiving role; the number of the high-energy sound beam transducers used for excitation and the number of the high-energy sound beam transducers used for receiving are one-shot and multi-shot, one-shot and multi-shot.

By the above, the regulation and control device can be adjusted according to different requirements and actual conditions, so that the optimal sound beam excitation and receiving effect can be realized.

Optionally, each high-energy sound beam transducer is electrically connected to a network program-controlled ultrasonic power supply, and each network program-controlled ultrasonic power supply is electrically connected with the residual stress closed feedback regulation and control system; the residual stress closed feedback regulation and control system is used for controlling regulation and control signal parameters of each network program-controlled ultrasonic power supply and is used for configuring the high-energy sound beam transducer for excitation or for receiving.

By the method, the automatic adjustment of the regulation signal parameters can be realized through a closed feedback mode.

In a second aspect, the present application provides a method for controlling the residual stress of a propellant cured product, using any one of the above described devices for controlling the residual stress of a propellant cured product, the method comprising the steps of: setting regulation signal parameters through a residual stress closed feedback regulation system; the network program-controlled ultrasonic power supply uses a high-energy sound beam transducer for excitation to excite high-energy sound beams to regulate and control residual stress generated in the propellant curing process according to regulation and control signal parameters; the high-energy sound beam transducer for receiving receives echo signals while regulating and controlling; and the residual stress closed feedback regulation and control system takes the received change of the echo signal as a feedback signal to adjust the regulation and control signal parameters in real time, and when the change of the echo signal reaches a preset standard range, the regulation and control work is finished.

Optionally, when the residual stress closed feedback regulation and control system adjusts the regulation and control signal parameters in real time, the method further includes: the residual stress closed feedback regulation and control system adjusts part of the high-energy sound beam transducers to be used for excitation and adjusts part of the high-energy sound beam transducers to be used for receiving.

Drawings

FIG. 1 is a schematic structural diagram of an apparatus for controlling the residual stress of a propellant cured according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of a device for controlling the residual stress of a propellant cured according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of a mold section of an apparatus for controlling the residual stress of a propellant curing according to an embodiment of the present application;

FIG. 4 is a schematic view of a hold-down mechanism valve of an apparatus for controlling the residual stress of a propellant curing according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a high energy beam transducer, wedge, of an apparatus for controlling the residual stress of a propellant curing provided in an embodiment of the present application;

FIG. 6 is a schematic diagram of a closed-loop feedback control system for a device for controlling the residual stress of a propellant cured according to an embodiment of the present application;

FIG. 7 is a flow chart of a method for regulating the residual stress of a propellant cured according to an embodiment of the present application.

Reference numerals:

201-mold cylinder, 202-high-energy sound beam transducer, 203-pressing mechanism, 204-base, 205-supporting mechanism, 206-wedge block, 207-screw, 208-bolt, 2051-locating threaded hole, 2052-wire inlet, 2011-leak-proof edge, 2031-mounting hole, 2032-pressing mechanism threaded hole, 2021-locating concave plane, 2022-transducer threaded hole, 2061-threaded protruding rod and 2062-curved surface.

It should be understood that in the foregoing structural schematic diagrams, the sizes and forms of the respective block diagrams are for reference only and should not constitute an exclusive interpretation of the embodiments of the present invention. The relative positions and inclusion relationships between the blocks presented by the structural diagrams are merely illustrative of structural relationships between the blocks, and are not limiting of the physical connection of embodiments of the present invention.

Detailed Description

The technical scheme provided by the application is further described below by referring to the accompanying drawings and examples. It should be understood that the system structures and service scenarios provided in the embodiments of the present application are mainly for illustrating possible implementations of the technical solutions of the present application, and should not be construed as the only limitation of the technical solutions of the present application. As one of ordinary skill in the art can know, with the evolution of the system structure and the appearance of new service scenarios, the technical scheme provided in the application is applicable to similar technical problems.

It should be appreciated that embodiments of the present application provide arrangements and methods for modulating the residual stress of a propellant cure. Because the principles of solving the problems in these technical solutions are the same or similar, in the following description of the specific embodiments, some repetition is not described in detail, but it should be considered that these specific embodiments have mutual references and can be combined with each other.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. If there is a discrepancy, the meaning described in the present specification or the meaning obtained from the content described in the present specification is used. In addition, the terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the present application.

As shown in fig. 1 to 6, an embodiment of the present application provides an apparatus for controlling a curing residual stress of a propellant, including:

the high-energy sound beam energy converter comprises a die cylinder 201 positioned above a base 204, a pressing mechanism 203 on the wall of the die cylinder 201, a connection whole of a high-energy sound beam energy converter 202 fixed on the wall of the die cylinder 201 through the pressing mechanism 203 and a wedge 206, the base 204 arranged at the bottom of the die cylinder 201, a supporting mechanism 205 arranged below the base 204, the high-energy sound beam energy converter 202 arranged in the supporting mechanism 205 and a closed-loop feedback regulation system electrically connected with the high-energy sound beam energy converter 202.

Specifically, the pressing mechanism petals in the regulating device are tightly connected and fixed on the cylinder wall of the mold cylinder through bolts 208, the high-energy sound beam transducer 202 and the wedge 206 are connected through threads and pass through mounting holes 2031 on the pressing mechanism 203, the whole of the pressing mechanism petals tightly adhere to the surface of the mold cylinder through bolts 208 mounted on the pressing mechanism 203, the bottom of the mold cylinder 201 is connected with the base 204 through bolts 208, the high-energy sound beam transducer 202 in the supporting mechanism 205 is fixed below the base 204 through bolts 207, and the position of the high-energy sound beam transducer 202 in the supporting mechanism 205 is fixed through bolts 208, so that the whole device is integrated. The high energy beam transducer 202 is electrically connected to a network programmed ultrasonic power supply in a closed loop feedback regulation system. The network program-controlled ultrasonic power supply is controlled by the residual stress closed-loop feedback regulation system to excite the plurality of high-energy sound beam transducers 202 to emit high-energy sound beams to the propellant, meanwhile, echo signals received by the plurality of high-energy sound beam transducers are detected on a detection interface of the residual stress closed-loop feedback regulation system, and the change of the echo signals is used as a feedback signal of the high-energy sound beam regulation to change regulation signal parameters in real time until a preset standard range is reached, and the regulation process is ended.

The purpose of adding the high energy sound beam during the curing of the propellant is: firstly, the high-energy sound beam is transmitted into the propellant slurry in the curing process by utilizing the plastic induction effect by means of the high-frequency wave energy of the high-energy sound beam, so that the mechanical property of the propellant slurry is enhanced, and the energy which can cause the propellant to generate residual stress when the propellant is cured is enough to resist and eliminate, thereby effectively reducing the residual stress generated in the propellant. Secondly, the particles in the propellant slurry are more compact by introducing high-frequency and small-amplitude high-energy sound beams, so that the leveling property of the surface is improved, the smooth escape of the gas in the propellant slurry is facilitated, the mechanical property and stability of the propellant slurry are further improved, and the internal residual stress is reduced or even avoided.

Optionally, the mold 201 above the base 204 is formed by splicing multiple identical mold sections.

In particular, the mold cylinder structure formed by splicing multiple sections of same mold cylinder sections provides a more flexible and adjustable device so as to adapt to different propellant characteristics and process requirements. Each mould shell section is kept consistent, so that seamless connection is ensured when the mould shell sections are spliced, and a complete and stable container is formed. The device is not only beneficial to improving the production efficiency, but also is easier to maintain and upgrade, and provides reliable support for the curing process of the propellant.

Optionally, the upper and lower cylinder edges of each section of the mould cylinder section are provided with leakage-proof edges 2011.

Specifically, in each of the spliced mold cylinder sections, in order to effectively prevent possible liquid leakage, a leakage preventing edge 2011 is specifically designed. The leakage preventing edge 2011 is disposed on the upper and lower edges of each mold cylinder section, and its structure includes, but is not limited to, protrusions, grooves, sealing strips or other similar devices. By skillfully configuring the leakage-proof edge 2011 at the corresponding positions of the upper and lower cylinder edges, the tight sealing of the splicing position of the mould cylinder sections is successfully realized, thereby reliably preventing the liquid from leaking in the solidification process.

Optionally, the high-energy sound beam transducers are fixedly connected to the outer surface of the mold cylinder in a multi-layer distribution manner.

Specifically, the multi-layer high-energy sound beam transducers are firmly connected to the outer surface of the mold cylinder, the selection of the layer number determines that the regulating and controlling device has certain flexibility, and meanwhile, the multi-layer high-energy sound beam transducers are distributed on the surface of the mold cylinder, so that more comprehensive and uniform sound beam energy input in the axial direction of the mold cylinder is provided. This not only enhances the regulation of the residual stress of the propellant, but also further optimizes the transmission efficiency of the high energy sound beam.

Optionally, the high-energy sound beam transducers are fixedly connected to the outer surface of the mold cylinder in a multi-layer distribution manner, and at least two ends of each mold cylinder section are respectively provided with one layer of high-energy sound beam transducer.

Specifically, at the splicing position of the mould cylinder sections, the generated residual stress is larger than that of other parts, so that at least one layer of high-energy sound beam transducer is arranged at two ends of each mould cylinder section, not only is the residual stress generated in the propellant curing process more accurately regulated and controlled, but also a more reliable and stable process of reducing and homogenizing the curing stress is realized.

Optionally, each layer of high-energy acoustic beam transducers disposed on the mold cylinder section is uniformly distributed along the circumferential direction of the mold cylinder section.

Specifically, each layer of high-energy beam transducers is uniformly distributed along the circumferential direction of the mold cylinder section, and the number of the uniformly distributed exciters is optional, which determines that each layer of high-energy beam transducer regulating and controlling device has certain flexibility, and meanwhile, more comprehensive and uniform beam energy input along the circumferential direction of the mold cylinder is provided through the high-energy beam transducers uniformly distributed along the circumferential direction of the mold cylinder. This not only enhances the regulation of the residual stress of the propellant, but also further optimizes the transmission efficiency of the high energy sound beam.

Optionally, two adjacent layers of high-energy acoustic beam transducers are arranged in staggered arrangement along the axial direction of the die cylinder section.

Specifically, two adjacent layers of high-energy acoustic beam transducers are arranged in staggered arrangement along the axial direction of the die cylinder section, so that the overall and uniform acoustic beam energy input of the die cylinder is provided. This not only enhances the regulation of the residual stress of the propellant, but also further optimizes the transmission efficiency of the high energy sound beam.

Optionally, the hold-down mechanism 203 is fastened together and secured to the mold wall by a plurality of hold-down mechanism petals by bolts 208.

Specifically, the hold-down mechanism 203 has a plurality of hold-down mechanism petals. The plurality of hold-down mechanism petals are secured together by bolts 208 to form an integral hold-down mechanism 203 that is securely fastened to the mold cylinder wall. The structure, shape and number of the hold-down mechanism petals can be adjusted according to actual requirements so as to meet the special requirements of different application scenes and the mold cylinder 201. And also makes the hold-down mechanism 203 more convenient and efficient during assembly and disassembly of the mold cartridge 201.

Optionally, a mounting hole 2031 slightly larger than the diameter of the high-energy sound beam transducer is arranged in the middle of the hold-down mechanism petal, and a plurality of hold-down mechanism bolt holes 2032 are arranged around the mounting hole 2031 for fixing the wedge 206 connected with the end of the high-energy sound beam transducer.

Specifically, in the structure of the hold-down mechanism valve body, a mounting hole 2031 slightly larger than the diameter of the high-energy sound beam transducer is purposely provided at the middle position. To ensure that the high energy beam transducer 202 can be efficiently installed therein. Around the circumference of the mounting hole 2031 are provided a plurality of pressing mechanism bolt holes 2032 for fixing the wedge 206 of the high-energy beam transducer end to the mold cylinder wall using bolts 208.

Optionally, the surface of the wedge 206 connected to the end of the high energy beam transducer that contacts the mold wall is curved 2062 and in close contact with the mold wall.

Specifically, the surface of the wedge 206 that contacts the mold wall is curved 2062 and the contact with the mold wall is tight. The high-energy ultrasonic waves emitted by the high-energy sound beam transducer 202 are transmitted into the propellant through the sound guiding wedge 206, so that residual stress generated in the curing process in the propellant is homogenized and reduced.

Optionally, the wedge 206 connected to the end of the high-energy sound beam transducer is detachably connected to the end of the high-energy sound beam transducer through threads.

Specifically, a threaded detachable connection mode is adopted between the wedge 206 connected with the end of the high-energy sound beam transducer and the end of the high-energy sound beam transducer. The high energy beam transducer end is provided with a corresponding transducer threaded bore 2022, while the attached wedge 206 portion is designed with a threaded boss 2061 adapted thereto. This threaded removable connection facilitates assembly and disassembly of the connecting wedge 206 to accommodate different mold wall curvatures.

Optionally, the sidewall surface of the high-energy beam transducer 202 mounted in the support mechanism 205 is provided with a locating concave plane 2021.

Specifically, the side wall surface of the high-energy sound beam transducer 202 is provided with a positioning concave plane 2021, so that the high-energy sound beam transducer 202 can be accurately positioned and stably fixed in the supporting mechanism 205.

Optionally, a positioning threaded hole 2051 and a wire inlet 2052 are provided on a side wall surface of the supporting mechanism 205 disposed below the base 204.

Specifically, the side wall surface of the supporting mechanism below the base 204 is provided with a positioning threaded hole 2051 and a wire inlet 2052. The high energy beam transducer 202 mounted in the support mechanism 205 is fixed in its relative position in the support mechanism 205 by bolts 208 in the pilot screw holes 2051. The wire inlet 2052 provides a convenient circuit access path for the high energy beam transducer 202 mounted in the support mechanism 205.

Optionally, the couplant is uniformly coated on the contact part of the propellant mold cylinder and the high-energy sound beam transducer connecting wedge block, and the propellant mold cylinder is tightly and firmly coupled with the high-energy sound beam transducer.

Specifically, the couplant is uniformly coated on the contact part of the propellant mold cylinder and the high-energy sound beam transducer connecting wedge block, so that the high-energy sound beam can be ensured to be uniformly injected into the propellant, and the regulation accuracy in the regulation and control process is ensured; the propellant mold cylinder is tightly and firmly coupled with the high-energy sound beam transducer, so that the high-energy sound beam can effectively regulate and control the curing process of propellant slurry, the optimal regulation and control effect of the high-energy sound beam is ensured, and further, the residual stress generated in the propellant is effectively reduced and homogenized.

Each high-energy sound beam transducer is electrically connected to a network program-controlled ultrasonic power supply, and each network program-controlled ultrasonic power supply is electrically connected with the residual stress closed feedback regulation and control system; the residual stress closed feedback regulation and control system is used for controlling regulation and control signal parameters of each network program-controlled ultrasonic power supply and is used for configuring the high-energy sound beam transducer for excitation or for receiving.

Optionally, the regulation signal parameters set on the regulation interface of the residual stress closed-loop feedback regulation system include output amplitude, output power and output frequency.

Specifically, the tuning interface of the closed-loop feedback tuning system for residual stress is capable of tuning a plurality of parameters including output amplitude, output power, and output frequency. The high-energy sound beams with different energies can be excited by adjusting the parameters, and in the feedback regulation and control process, the excited high-energy sound beams can be matched with corresponding real-time residual stress places, so that the condition of over regulation and control is avoided, and the performance of the propellant is reduced.

Alternatively, the number of exciting high energy beam transducers and the number of receiving high energy beam transducers may be one-shot-multi-shot, multi-shot-one-shot, or multi-shot-multi-shot.

Specifically, the number of the high-energy sound beam transducers with excitation and the number of the high-energy sound beam transducers with receiving can be flexibly configured, including one-shot and multiple-shot and one-shot or multiple-shot and multiple-shot, so that the regulating and controlling device can be adjusted according to different requirements and actual conditions so as to achieve the optimal sound beam excitation and receiving effects. A more personalized and customizable acoustic energy delivery means is provided to better meet the need for different propellant curing processes to regulate residual stresses.

As shown in fig. 7, an embodiment of the present application provides a method for controlling the curing residual stress of a propellant, which includes the following steps:

step S101: according to the size and structure of the propellant mould cylinder, a plurality of high-energy sound beam transducers are arranged around the mould cylinder;

step S102: setting regulation signal parameters on a regulation interface of a residual stress closed-loop feedback regulation system;

step S103: according to the regulating signal parameters, the high-energy sound beam transducers excite high-energy sound beams to regulate and control residual stress generated in the propellant curing process;

step S104: detecting echo signals received by a plurality of high-energy sound beam transducers on a detection interface of a residual stress closed-loop feedback regulation system while regulating;

step S105: and changing the parameters of the regulating and controlling signals in real time by taking the received echo signal change as a feedback signal of high-energy sound beam regulation and control, and ending the regulating and controlling work when the echo signal change reaches a preset standard range.

Specifically, a device for generating residual stress control in the process of curing the propellant is designed according to the size and structure of the propellant mold 201, and the designed residual stress control device is fixed on the outer surface of the propellant mold.

In some embodiments, the residual stress closed feedback regulation system adjusts the regulation signal parameters in real time, and further includes performing a function adjustment of the high-energy beam transducer, for example, the residual stress closed feedback regulation system adjusts a portion of the high-energy beam transducer to be a high-energy beam transducer for excitation and adjusts a portion of the high-energy beam transducer to be a high-energy beam transducer for reception.

By the method, not only can the regulation and control signal parameters of each high-energy sound beam transducer be flexibly controlled according to the condition of the regulation and control process, but also the functions of each high-energy sound beam transducer can be flexibly controlled.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

In addition, the terms "first, second, third, etc." or module a, module B, module C, etc. in the description and the claims are used solely for distinguishing between similar objects and not necessarily for a specific ordering of objects, it being understood that a specific order or sequence may be interchanged if allowed to enable the embodiments of the application described herein to be practiced otherwise than as specifically illustrated and described herein.

In the above description, reference numerals indicating steps such as S110, S120, … …, etc. do not necessarily indicate that the steps are performed in this order, and the order of the steps may be interchanged or performed simultaneously as the case may be.

The term "comprising" as used in the description and claims should not be interpreted as being limited to what is listed thereafter; it does not exclude other elements or steps. Thus, it should be interpreted as specifying the presence of the stated features, integers, steps or components as referred to, but does not preclude the presence or addition of one or more other features, integers, steps or components, or groups thereof. Thus, the expression "a device comprising means a and B" should not be limited to a device consisting of only components a and B.

Reference in the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment, but may. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments as would be apparent to one of ordinary skill in the art from this disclosure.

Note that the above is only a preferred embodiment of the present application and the technical principle applied. Those skilled in the art will appreciate that the present application is not limited to the particular embodiments described herein, but is capable of numerous obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the present application. Thus, while the present application has been described in terms of the foregoing embodiments, the present application is not limited to the foregoing embodiments, but may include many other equivalent embodiments without departing from the spirit of the present application, all of which fall within the scope of the present application.

Claims

1. A device for regulating the residual stress of a propellant cured, comprising:

a base;

a mold cylinder is arranged above the base;

a plurality of groups of stress relief devices are assembled on the outer cylinder wall of the die cylinder along the axial direction of the die cylinder, and each group of stress relief devices comprises a plurality of stress relief devices uniformly distributed along the circumferential direction of the outer cylinder wall of the die cylinder;

each stress reduction device comprises a high-energy sound beam transducer and a wedge block connected with the transmitting end of the high-energy sound beam transducer, wherein one end of the wedge block, which is opposite to the high-energy sound beam transducer, is tightly attached to the outer cylinder wall of the mold cylinder;

a supporting mechanism is arranged below the base, and a cavity is formed in the supporting mechanism;

the high-energy sound beam transducer is arranged below the base and positioned in the cavity of the supporting mechanism, the transmitting end of the high-energy sound beam transducer is connected with a screw, and the top of the screw stretches into a counter bore below the bottom of the mold cylinder.

2. The device according to claim 1, wherein the mould cylinder is formed by splicing a plurality of identical mould cylinder sections, and the upper cylinder edge and/or the lower cylinder edge of each spliced mould cylinder section are/is provided with a leakage-proof edge.

3. The apparatus of claim 2, wherein adjacent groups of high energy beam transducers are staggered along the axial direction of the mould section.

4. A device according to claim 3, further comprising an annular hold-down mechanism comprising a plurality of hold-down mechanism petals connected in series in an annular shape, each stress relief device being secured to the die cylinder outer barrel wall by one hold-down mechanism petal.

5. The device according to claim 4, wherein a mounting hole for passing the high-energy sound beam transducer is arranged in the middle of the hold-down mechanism valve body, a plurality of transducer bolt holes are arranged around the mounting hole, and the transducer bolt holes are used for fixing wedges connected with the transmitting end of the high-energy sound beam transducer.

6. The apparatus of claim 5, wherein the high energy beam transducer emitting end is provided with a transducer threaded hole, and the wedge is provided with a mating threaded boss through which the high energy beam transducer emitting end is coupled to the wedge.

7. The apparatus of claim 6, wherein a portion of the high energy beam transducer is configured to be active and a portion of the high energy beam transducer is configured to be active;

the number of the high-energy sound beam transducers used for excitation and the number of the high-energy sound beam transducers used for receiving are one-shot and multi-shot, one-shot and multi-shot.

8. The apparatus of claim 6, wherein each high energy beam transducer is electrically connected to a network programmable ultrasonic power source, each network programmable ultrasonic power source being electrically connected to the residual stress closed feedback regulation system;

the residual stress closed feedback regulation and control system is used for controlling regulation and control signal parameters of each network program-controlled ultrasonic power supply and is used for configuring the high-energy sound beam transducer for excitation or for receiving.

9. A method of controlling the residual stress of a propellant curing using the device for controlling the residual stress of a propellant according to any one of claims 1 to 6, comprising the steps of:

setting regulation signal parameters through a residual stress closed feedback regulation system;

the network program-controlled ultrasonic power supply uses a high-energy sound beam transducer for excitation to excite high-energy sound beams to regulate and control residual stress generated in the propellant curing process according to regulation and control signal parameters;

the high-energy sound beam transducer for receiving receives echo signals while regulating and controlling;

and the residual stress closed feedback regulation and control system takes the received change of the echo signal as a feedback signal to adjust the regulation and control signal parameters in real time, and when the change of the echo signal reaches a preset standard range, the regulation and control work is finished.

10. The method of claim 9, wherein the residual stress closed feedback regulation system adjusts the regulation signal parameter in real time, further comprising:

the residual stress closed feedback regulation and control system adjusts part of the high-energy sound beam transducers to be used for excitation and adjusts part of the high-energy sound beam transducers to be used for receiving.