Multi-channel portable composite material repairing instrument with intelligent temperature control system and repairing method

Abstract

The invention discloses a multi-channel portable composite material repairing instrument with an intelligent temperature control system and a repairing method, and relates to the technical field of unmanned aerial vehicles. Comprising a multi-channel vacuum system, an intelligent temperature control system, a hot repairing instrument control system, an intelligent operation panel and a composite material repairing system, the intelligent temperature control system, the hot repairing instrument control system and the intelligent operation panel are connected in sequence, and the multi-channel vacuum system is connected with the intelligent operation panel through an inlet and an outlet. The composite material repairing system is located at the lower end of the intelligent operation panel and connected with the intelligent operation panel. Through the intelligent temperature control system, reliable, safe and intelligent operation of the system is realized; through the introduction of the intelligent operation panel, the operation is simple, the operation limitation on personnel is reduced, the visual operation of parameters such as temperature, pressure and time is realized, the control precision of the parameters in the maintenance process is improved, and the maintenance quality of products is effectively ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and more particularly to a multi-channel portable composite material repairing instrument and a repairing method with an intelligent temperature control system. Background Art

[0002] Composite materials are widely used in modern UAV structures due to their high specific strength and specific stiffness, strong designability, good fatigue performance, corrosion resistance and other excellent properties. Composite structures will inevitably have defects or damage during the manufacturing and use process. Due to the material characteristics, conventional maintenance methods cannot meet the strength requirements, so the repair of its structure has received more and more attention. In addition, high-efficiency, easy-to-operate, and low-cost repair processes have become one of the current research hotspots for composite material repair.

[0003] The existing composite material thermal repair instrument technology can usually only repair a single part, and cannot meet the needs of repairing multiple damaged locations at the same time during field maintenance. At the same time, the operation of the thermal repair instrument requires certain technical capabilities and professional experience, and the control of the curing temperature and vacuum pressure is mainly done manually. In order to realize the intelligent operation and control, it is difficult to promote and use.

[0004] Therefore, it is an urgent problem for those skilled in the art to propose a multi-channel portable composite material repair instrument and repair method with an intelligent temperature control system to solve the difficulties existing in the prior art. Summary of the invention

[0005] In view of this, the present invention provides a multi-channel portable composite material repair instrument and repair method with an intelligent temperature control system. Through multi-channel vacuum technology, multiple repair positions can be repaired simultaneously, greatly improving the maintenance efficiency; through the intelligent temperature control system, the system can be operated reliably, safely and intelligently; through the introduction of the intelligent operation panel, the operation is simple, the operation restrictions on personnel are reduced, the visual operation of various parameters such as temperature, pressure, time, etc. is realized, the control accuracy of various parameters in the maintenance process is improved, and the maintenance quality of the product is effectively guaranteed; a breakthrough in the number of single repair layers of repair materials is achieved, and the repair technology is successfully introduced into wet hand lay-up molded composite material parts; the number of single curing repair layers of autoclave molding materials reaches 30 layers, the internal quality of the repaired composite material structural parts is excellent, and the hot repair instrument repair technology for large-thickness composite material structural parts is realized, which is suitable for high-quality quick repair of common faults of composite material parts of various types of aircraft and unmanned aerial vehicle equipment.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A multi-channel portable composite material repair instrument with an intelligent temperature control system comprises: a multi-channel vacuum system, an intelligent temperature control system, a heat repair instrument control system, an intelligent operation panel and a composite material repair system, wherein the intelligent temperature control system, the heat repair instrument control system and the intelligent operation panel are connected in sequence, the multi-channel vacuum system is connected to the intelligent operation panel through an inlet and outlet, and the composite material repair system is located at the lower end of the intelligent operation panel and is connected to the intelligent operation panel.

[0008] Optionally, a multi-channel vacuum system is used to generate a vacuum pressure of 0.9 Bar.

[0009] Optionally, the intelligent temperature control system includes: a temperature box intelligent control panel, an intelligent controller, and a heating plate power supply. The intelligent controller is arranged on the temperature box intelligent control panel, and the heating plate power supply is arranged on the lower side of the intelligent controller.

[0010] Optionally, the thermal repair instrument control system includes: a microcomputer, a thermocouple signal conditioning module, an AD data acquisition system, a power amplifier module, a power supply, an electric blanket heating power control system and an alarm protection system; wherein the microcomputer is connected to the thermocouple signal conditioning module, the AD data acquisition system, the power amplifier module, the power supply, the electric blanket heating power control system and the alarm protection system.

[0011] Optionally, ten vacuum channels are provided on the intelligent operation panel, and the user can call up the composite material repair parameters stored in the thermal repair instrument and directly modify the existing repair parameters on the thermal repair instrument.

[0012] Optionally, the composite material repair system includes a storage compartment for storing a tool kit and auxiliary materials for composite material repair.

[0013] Optionally, the composite material repair tool kit includes: a cutting tool, a vacuum cleaner, a drill, a heating blanket, a vacuum bag, and an isolation film, which are used to clean damaged parts of the composite material structure.

[0014] A multi-channel portable composite material repair instrument with an intelligent temperature control system, and a repair method using any of the above multi-channel portable composite material repair instruments with an intelligent temperature control system, comprising the following steps:

[0015] According to the requirements of composite material repair, the repaired parts shall be polished, cleaned, laid, separated, breathable felt placed, thermocoupled, and bagged to complete the preparation work before repair;

[0016] Turn on the repair instrument and use the detection switch to detect the bag making condition at the repair position and the vacuum maintenance condition;

[0017] Turn on the temperature box control panel, heating controller, heating plate power supply, and gas source switch, select repair parameters according to the prompts of the intelligent control system, or compile new parameters to repair the damaged parts;

[0018] After the repair is completed, turn off the repair instrument, open the vacuum bag, check whether the repaired part is intact, and check various parameters of the repair process.

[0019] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a multi-channel portable composite material repair instrument and a repair method with an intelligent temperature control system, and the beneficial effects are:

[0020] 1) The present invention adopts multi-channel vacuum repair technology to achieve simultaneous repair of multiple repair positions, and innovatively introduces an intelligent temperature control system and an intelligent operation panel on the basis of the new process, which reduces the difficulty of the operator's work and provides technical support for the internal and external field repair of thick composite parts during the development of aircraft models and the subsequent aircraft operation process;

[0021] 2) The invention realizes that both autoclave-molded materials and wet-molded composite materials can be repaired, and the internal quality of the repaired composite structural parts is excellent. The hot repair instrument repair technology for thick composite structural parts is realized, which greatly reduces the cost and provides technical support for the internal and external field repair of thick composite parts in the development of aircraft models and the subsequent aircraft operation process;

[0022] 3) The present invention has been widely used in harsh plateau environments and large-scale exercises, and has participated in drone exercise support many times. In particular, it has successfully completed support tasks in the extremely cold environment of the plateau, and has been recognized and praised by users. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 A system structure diagram of a multi-channel portable composite material repair instrument with an intelligent temperature control system provided by the present invention;

[0025] Figure 2 A flow chart of a repair method of a multi-channel portable composite material repair instrument with an intelligent temperature control system provided by the present invention;

[0026] Figure 3 This is a schematic diagram of the present invention before it is unpacked;

[0027] Figure 4 A schematic diagram of the unpacking provided by the present invention;

[0028] Figure 5 A detailed schematic diagram provided for the present invention;

[0029] Figure 6 The overall design block diagram of the intelligent temperature control system provided by the present invention;

[0030] Among them, 1-outer box, 2-vacuum pump and radiator, 3-ten-way vacuum channel, 4-storage compartment, 5-temperature box intelligent control panel, 6-intelligent controller, 7-heating plate power supply, 8-gas source switch, 9-working pressure gauge, 10-power box temperature gauge, 11-detection switch, 12-main power switch, 13-suction pump switch, 14-negative pressure generator switch. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1 As shown, the present invention discloses a multi-channel portable composite material repair instrument with an intelligent temperature control system, including: a multi-channel vacuum system, an intelligent temperature control system, a thermal repair instrument control system, an intelligent operation panel and a composite material repair system, wherein the intelligent temperature control system, the thermal repair instrument control system and the intelligent operation panel are connected in sequence, the multi-channel vacuum system is connected to the intelligent operation panel through an inlet and outlet, and the composite material repair system is located at the lower end of the intelligent operation panel and is connected to the intelligent operation panel.

[0033] Specifically, in order to ensure the normal use of the repair instrument in the low-temperature environment of the field, the composite material thermal repair instrument has an automatic heating system. When the ambient temperature in the chassis is lower than 0°C, the automatic heating system starts to work to ensure that the ambient temperature in the chassis is higher than 0°C. The automatic heating system is independent of the control system of the composite material thermal repair instrument and has high reliability.

[0034] For details, see Figure 3 The figure is a schematic diagram before unpacking, see Figure 4 The following is a schematic diagram of the unpacking process.

[0035] For details, see Figure 5As shown, it is a detailed schematic diagram of the interior of the repair instrument, including: an outer box 1, a vacuum pump and a radiator 2, ten vacuum channels 3, a storage compartment 4, a temperature box intelligent control panel 5, an intelligent controller 6, a heating plate power supply 7, an air source switch 8, a working pressure gauge 9, a power box temperature gauge 10, a detection switch 11, a main power switch 12, a suction pump switch 13, and a negative pressure generator switch 14.

[0036] Furthermore, a multi-channel vacuum system is used to generate a vacuum pressure of 0.9 Bar.

[0037] Specifically, the generated vacuum is input into the thermal repair instrument through a quick connector, and is output to the repairing part through a vacuum monitoring system of the thermal repair instrument.

[0038] Furthermore, the intelligent temperature control system includes: a temperature box intelligent control panel 5 , an intelligent controller 6 , and a heating plate power supply 7 . The intelligent controller 6 is arranged on the temperature box intelligent control panel 5 , and the heating plate power supply 7 is arranged on the lower side of the intelligent controller 6 .

[0039] Specifically, the curing process of composite material repair has two requirements for temperature control: the change in the slope of the temperature line during the temperature rise and temperature drop stages and the change in the temperature value during the dwell stage. The composite material thermal repair instrument uses a carbon fiber reinforced silicone rubber electric blanket, which has a maximum heat resistance temperature of 250°C and can provide 5 watts of power per square centimeter. The composite material thermal repair instrument uses a K-type thermocouple with a measurement accuracy of 0.1°C. When the thermal repair instrument is working, it will automatically detect the number of thermocouples used, and use the average temperature, maximum temperature and minimum temperature according to the user's settings to achieve intelligent control of the curing temperature rise, constant temperature and cooling process.

[0040] Through the intelligent temperature control system, the simulated process temperature curve is generated, the process execution temperature curve is calculated, the average temperature of the heating blanket is calculated, and the maximum and minimum temperatures are calculated; according to the process requirements, user settings and the calculated curve, the equipment operation is automatically controlled, and the accident handling method given by the intelligent management software is read and executed to achieve reliable, safe and intelligent operation of the system. The overall design block diagram of the intelligent temperature control system can be found in Figure 6 shown.

[0041] Specifically, the thermal repair instrument displays the ongoing repair process on the LCD screen in a graphical manner, and the operator can easily observe various technical parameters of the repair process (such as thermocouple values ​​and vacuum pressure), and the degree of consistency between the actual repair process and the curing process used. The repair process is monitored in real time in the form of color graphic curves, and the working time progress, thermocouple measurement values, vacuum pressure values ​​and various system warning information are displayed on the screen.

[0042] Furthermore, the thermal repair instrument control system includes: a microcomputer, a thermocouple signal conditioning module, an AD data acquisition system, a power amplifier module, a power supply, an electric blanket heating power control system and an alarm protection system; wherein the microcomputer is connected to the thermocouple signal conditioning module, the AD data acquisition system, the power amplifier module, the power supply, the electric blanket heating power control system and the alarm protection system.

[0043] Furthermore, the ten vacuum channels 3 are arranged on the intelligent operation panel, and the user calls the composite material repair parameters stored in the thermal repair instrument and directly modifies the existing repair parameters on the thermal repair instrument.

[0044] Specifically, the existing repair parameters are directly modified on the thermal repair instrument or new parameters are compiled according to actual conditions.

[0045] Specifically, through the introduction of the intelligent operation panel, the operation is simple, the operating restrictions on personnel are reduced, the visual operation of various parameters such as temperature, pressure, time, etc. is realized, the control accuracy of various parameters in the maintenance process is improved, and the maintenance quality of the product is effectively guaranteed. The operating status of each electrical equipment and the alarm location indication are displayed on the intelligent operation panel, and the fault diagnosis information is displayed. The process parameters such as temperature, pressure and production data accumulation are displayed; it is used for user control mode and process parameter setting to complete manual and automatic start and stop control of the equipment.

[0046] Furthermore, the composite material repair system comprises a storage compartment 4 for storing a tool kit and auxiliary materials for composite material repair.

[0047] Furthermore, the tool kit for composite material repair includes: a cutting tool, a vacuum cleaner, a drill, a heating blanket, a vacuum bag, and an isolation film, which are used to clean the damaged parts of the composite material structure.

[0048] and Figure 1 Corresponding to the above system, the present invention also provides a repair method of a multi-channel portable composite material repair instrument with an intelligent temperature control system, which is used for Figure 1 The specific implementation of the system in the method flow chart is shown in Figure 2 As shown, the following steps are included:

[0049] According to the requirements of composite material repair, the repaired parts shall be polished, cleaned, laid, separated, breathable felt placed, thermocoupled, and bagged to complete the preparation work before repair;

[0050] Turn on the repair instrument and use the detection switch 11 to detect the bag making condition at the repair position and the vacuum maintenance condition;

[0051] Turn on the temperature box control panel 5, the intelligent controller 6, the heating plate power supply 7, and the gas source switch 8, select the repair parameters according to the prompts of the intelligent control system, or compile new parameters to repair the damaged parts;

[0052] After the repair is completed, turn off the repair instrument, open the vacuum bag, check whether the repaired part is intact, and check various parameters of the repair process.

[0053] Specifically, the detection switch 11 is used to detect the preparation status of the vacuum bag of the repaired test piece to prevent leakage during the repair process.

[0054] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0055] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-channel portable composite material repair instrument with an intelligent temperature control system, characterized in that: include: A multi-channel vacuum system, an intelligent temperature control system, a heat patching instrument control system, an intelligent operation panel and a composite material repair system, wherein the intelligent temperature control system, the heat patching instrument control system and the intelligent operation panel are connected in sequence, the multi-channel vacuum system is connected to the intelligent operation panel through an inlet and outlet, and the composite material repair system is located at the lower end of the intelligent operation panel and is connected to the intelligent operation panel.

2. The multi-channel portable composite material repair instrument with an intelligent temperature control system according to claim 1, characterized in that: A multi-channel vacuum system is used to generate a vacuum pressure of 0.9 Bar.

3. The multi-channel portable composite material repair instrument with an intelligent temperature control system according to claim 1, characterized in that: The intelligent temperature control system includes: a temperature box intelligent control panel, an intelligent controller, and a heating plate power supply. The intelligent controller is arranged on the temperature box intelligent control panel, and the heating plate power supply is arranged on the lower side of the intelligent controller.

4. The multi-channel portable composite material repair instrument with an intelligent temperature control system according to claim 1, characterized in that: The control system of the thermal repair instrument includes: a microcomputer, a thermocouple signal conditioning module, an AD data acquisition system, a power amplifier module, a power supply, an electric blanket heating power control system and an alarm protection system; wherein the microcomputer is connected with the thermocouple signal conditioning module, the AD data acquisition system, the power amplifier module, the power supply, the electric blanket heating power control system and the alarm protection system.

5. The multi-channel portable composite material repair instrument with an intelligent temperature control system according to claim 1, characterized in that: Ten vacuum channels are set on the intelligent operation panel. Users can call up the composite material repair parameters stored in the thermal repair instrument and modify the existing repair parameters directly on the thermal repair instrument.

6. The multi-channel portable composite material repair instrument with an intelligent temperature control system according to claim 1, characterized in that: The composite material repair system includes a storage compartment for storing a tool kit and auxiliary materials for composite material repair.

7. The multi-channel portable composite material repair instrument with an intelligent temperature control system according to claim 6, characterized in that: The tool kit for composite material repair includes: cutting tool, vacuum cleaner, drill, heating blanket, vacuum bag, isolation film, which is used to clean the damaged parts of composite material structure.

8. A multi-channel portable composite material repair instrument with an intelligent temperature control system, characterized in that A repair method using a multi-channel portable composite material repair instrument with an intelligent temperature control system as described in any one of claims 1 to 7 comprises the following steps: According to the requirements of composite material repair, the repaired parts shall be polished, cleaned, laid, separated, breathable felt placed, thermocoupled, and bagged to complete the preparation work before repair; Turn on the repair instrument and use the detection switch to detect the bag making condition at the repair position and the vacuum maintenance condition; Turn on the temperature box control panel, heating controller, heating plate power supply, and gas source switch, select repair parameters according to the prompts of the intelligent control system, or compile new parameters to repair the damaged parts; After the repair is completed, turn off the repair instrument, open the vacuum bag, check whether the repaired part is intact, and check various parameters of the repair process.

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