Unloading balance control system for heavy-load airship

Abstract

The invention relates to the technical field of airship loading, in particular to a heavy-load airship unloading balance control system. The problems that huge buoyancy is generated after a large-scale load-carrying airship is unloaded, balance is difficult to keep, and airship flight control is difficult are solved. According to the heavy-load airship unloading balance control system, when the airship is fully loaded, high-pressure buoyancy gas in the high-pressure gas tank is released by the heavy-load airship unloading balance control system to enter the buoyancy air bag, so that the buoyancy air bag is full, and the total lift force of the airship reaches the designed total lift force so as to meet the lift force required by full load; when the airship is unloaded, the heavy-load airship unloading balance control system is utilized, buoyancy gas in the buoyancy air bag is compressed to the high-pressure gas tank in a multi-stage mode, the volume of the buoyancy gas is reduced, and the total lift force of the airship is reduced, adjusted and controlled after the airship is unloaded.

Description

Technical Field

[0001] The invention relates to the technical field of airship loading, and in particular to a heavy-load airship unloading balance control system. Technical Background

[0002] "Airship" is an aircraft that can stay in the air for a long time without power. It is widely used in military and civilian fields. With the opening of China's low-altitude airspace, "airship" has a broad application field and market prospects with its unique functions and characteristics. At present, people are studying how to balance and control the huge buoyancy of tens of tons or even hundreds of tons of airships after unloading. Studies have shown that the use of hybrid power, such as providing lift when fully loaded according to the design principle of helicopters, can turn off the lift of helicopters after unloading to complete the lift balance and flight control after unloading; using hot air to generate lift to meet the lift required by the load, and turning off the hot air after unloading; however, the above schemes can achieve the design and manufacture of airships with a load of several tons. If the balance and flight control of the huge buoyancy of large-scale airships with a load of tens of tons or hundreds of tons after unloading are completed by using helicopter principles and hot air lift, the airship will lose its basic attributes of safety, greenness, environmental protection and energy saving.

[0003] The load of a traditional airship is to adjust the volume of the "auxiliary airbag" to change the volume of the lift gas, to adjust the volume of the lift gas of the airship (adjust the size of the buoyancy), and to complete the load task of the airship design. The "auxiliary airbag" has three functions:

[0004] 1. Ensure that the shape of the airship remains unchanged and the pressure in the "main airbag" is in the designed safe state. The specific operation is to change the pressure of the "main airbag" so that when the external conditions change (such as the temperature of the working environment increases, etc.), the volume of the "auxiliary airbag" is adjusted to change the volume of the lift gas in the "main airbag" (the auxiliary airbag is designed inside the main airbag), and adjust the pressure of the "main airbag" to keep it within the safe pressure value (the volume of the main airbag is equal to the sum of the volume of the lift gas + the volume of the auxiliary airbag air), while ensuring that the shape of the "soft airship" and "semi-rigid airship" does not deform under a certain pressure.

[0005] 2. Change the flying altitude of the airship. The specific operation is to adjust the volume of the "auxiliary airbag" within the safety pressure of the "main airbag" (the shape remains unchanged), so that the volume of the lifting gas in the "main airbag" changes, the lift of the airship changes, and thus the flying altitude of the airship changes.

[0006] 3. Balance the flight attitude of the airship. The specific operation is that the traditional airship is designed with an "auxiliary airbag" in front and behind the "main airbag". When the airship "nods" beyond the design value, the air V1 in the front "auxiliary airbag" is discharged under the condition that the pressure of the "main airbag" of the airship remains unchanged, so that the volume of the lifting body in the front of the "main airbag" increases by V1 and the lift increases. At the same time, the rear "auxiliary airbag" is filled with air of V1 volume. Under the condition that the volume of the "main airbag" remains unchanged, the lift of the rear of the "main airbag" is reduced, and the "nodding" attitude of the airship disappears through the "torque balance principle". Change the "head-up" attitude of the airship, and vice versa.

[0007] However, using the traditional airship "auxiliary airbag" design, the total volume of the airship will increase by 30% or more, reducing the effective lift volume of the airship. Therefore, to meet the same design load, the hull volume needs to be increased by more than 30%. For the design and manufacture of extra-large load-bearing airships (tens of tons), the existing design methods are difficult to implement in engineering.

[0008] The patent number is "202111256780.2", and the patent name is "A method for balancing airships". It provides an airship balancing solution using traditional airship design. The problem is that the volume of the "auxiliary airbag" of the airship generally accounts for about 30% of the total volume of the "main airbag", and the effective volume of the airship "main airbag" is only about 70%. Under the same payload conditions, the total volume of the airship will be designed to be very large, which greatly increases the manufacturing cost of the airship. It is difficult to manufacture super-large load-bearing airships (with a payload of tens or even hundreds of tons) in engineering. Summary of the invention

[0009] The present invention provides a heavy-loaded airship unloading balance control system to solve the problem that after a large-loaded airship is unloaded, huge buoyancy is generated, balance is difficult to maintain, and flight control of the airship is difficult.

[0010] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a heavy-loaded airship unloading balance control system, including a controller, a power circuit control system, a data acquisition system and several groups of gas circuit systems;

[0011] Each gas circuit system includes a loop system consisting of a buoyancy airbag, a one-way air valve, a first-stage compressor, a multi-stage compressor, a high-pressure gas tank, a total pressure-reducing one-way air valve, a buffer gas tank, and a pressure-reducing one-way air valve which are sequentially connected through a gas pipeline.

[0012] The controller is used to analyze and execute control instructions, and to control and manage the data acquisition system, the power circuit system and the gas circuit system;

[0013] The data acquisition system uses sensors to instantly collect data such as pressure, buoyancy, temperature, and attitude of the main airbag in the airship and transmits it to the controller for analysis;

[0014] The power circuit control system realizes the opening and closing of the one-way valve in the gas circuit system by receiving the control designation of the controller, and shrinks the buoyancy gas in the buoyancy airbag to the high-pressure gas tank through the multi-stage compressor to reduce the total lift of the airship; or releases the high-pressure helium in the high-pressure gas tank into the buoyancy airbag to increase the total lift of the airship.

[0015] The pressure-relief gas tank is used to reduce the pressure of the high-pressure buoyancy gas in the high-pressure gas tank.

[0016] The above-mentioned one-way air valve, total pressure reducing one-way air valve and pressure reducing one-way air valve are all electronic one-way controlled air valves.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1) The system of the present invention is provided with a high-pressure gas tank of sufficient capacity, which can realize the reduction, balance and flight control of the huge buoyancy after the airship is unloaded.

[0019] 2) The present invention is composed of one or more unit systems, which can be assembled on a rigid structure outside the hull, without occupying the design space of the hull. The installation position can be used to carry out the "static counterweight" design of the airship.

[0020] 3) The present invention utilizes the principle of "contracting and releasing lifting gas" to design the system of the present invention.

[0021] 4) Under the condition of the same load, the effective volume of the airship can be greatly reduced by 30% or more compared with the traditional airship design. Similarly, under the condition that the corresponding effective volume of the airship remains unchanged, the effective load can be greatly increased by more than 30%. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the configuration diagram of the airship unloading control system.

[0023] Figure 2 It is the design principle diagram of the present invention. DETAILED DESCRIPTION

[0024] 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.

[0025] The heavy-loaded airship unloading balance control system of the present invention releases high-pressure buoyancy gas in a high-pressure gas tank into a buoyancy airbag when the airship is fully loaded, so that the buoyancy airbag is filled and the total lift of the airship reaches the designed total lift to meet the lift required by the full load requirement; when the airship is unloaded, the heavy-loaded airship unloading balance control system is used to compress the buoyancy gas in the buoyancy airbag into the high-pressure gas tank through multiple stages, so as to reduce the volume of the buoyancy gas, thereby realizing the reduction, adjustment and control of the total lift of the airship after the airship is unloaded.

[0026] Its specific structure is as follows Figure 1 As shown, it includes a controller, a power circuit control system, a data acquisition system and several groups of gas circuit systems;

[0027] Each gas circuit system includes a loop system consisting of a buoyancy airbag, a one-way electronically controlled gas valve, a first-stage compressor, a multi-stage compressor, a high-pressure gas tank, a total pressure-reducing one-way electronically controlled gas valve, a buffer gas tank, and a pressure-reducing one-way electronically controlled gas valve which are connected in sequence through gas pipelines.

[0028] As an implementation method in this embodiment, the controller is used to analyze and execute control instructions, control and manage the helium compressor (multi-stage), high-pressure gas tank and gas pipeline units in the data acquisition system, power circuit system and gas circuit system; and issue operation instructions to the heavy-loaded airship unloading balance control system according to loading and unloading tasks for management.

[0029] The data acquisition system collects the pressure, buoyancy, temperature, attitude and other data of the main airbag in the airship through sensors and transmits them to the controller for analysis, providing a basis for the analysis and calculation operation of the airship computer control center.

[0030] The power circuit control system realizes the opening and closing of the one-way control valve in the gas circuit system by receiving the control designation of the controller, and according to the instruction issued by the computer control center, the helium in the buoyancy airbag is compressed to the high-pressure gas tank through the multi-stage compressor to reduce the total lift of the airship; or the high-pressure helium in the high-pressure gas tank is released into the buoyancy airbag to increase the total lift of the airship. The present invention is powered by an independent power supply.

[0031] As an implementation method in this embodiment, when the pressure-relief gas tank releases the high-pressure buoyancy gas in the high-pressure gas pipe according to instructions, the high-pressure gas cannot be released directly into the buoyancy airbag. The high-pressure gas should be decompressed by the "pressure-relief gas tank" and then released to the "buoyancy airbag" through the pipeline to generate lift.

[0032] As an implementation method in this embodiment, the helium compressor is a multi-stage compression. The helium compressor (multi-stage): is designed to be composed of one or more groups of gas compressors, which are "series" or "parallel" according to their technical parameters. Its function is to shrink the buoyancy gas in the "buoyancy airbag" and compress it into the "high-pressure gas tank" for temporary storage according to instructions, and release the high-pressure helium into the "buoyancy airbag" when carrying to generate the required lift.

[0033] As an implementation method in this embodiment, the high-pressure gas tank: the compression ratio, volume and quantity of the high-pressure gas tank are designed according to the load parameters of the load-bearing airship, and its function is to store or release high-pressure buoyancy gas according to mission requirements.

[0034] As an implementation method in this embodiment, the gas pipeline is a pipeline for contracting the buoyancy gas and releasing the buoyancy gas.

[0035] The working principle of the present invention is as follows: Figure 2 As shown:

[0036] When the airship is unloaded, the "one-way electronic control valve" (one or more) is opened according to the airship's attitude parameters, and the "first-stage gas compressor" and "multi-stage gas compressor" are turned on at the same time to compress the buoyancy gas (He) in the "buoyancy airbag" into the "high-pressure gas tank", so that the total lift of the airship is reduced to the required parameters to ensure that the airship is in a balanced state after unloading.

[0037] When the airship is overloaded or fully loaded, the "total decompression one-way electronic control valve" is opened according to the airship's attitude parameters, and the relevant "decompression one-way electronic control valve" is opened at the same time, and the high-pressure buoyancy gas (He) in the "high-pressure gas tank" passes through the "buffer gas tank" and then passes through the corresponding "decompression one-way electronic control valve" to be released to the corresponding "buoyancy airbag", so that the "buoyancy airbag" is filled and the total lift of the airship is increased to meet the "load" needs of the airship.

[0038] In actual engineering design, according to the load-bearing capacity requirements of the airship design, one or more "load-bearing airship unloading balancing systems" can be used to achieve the balance and stability of the airship's attitude after the load-bearing airship is unloaded.

[0039] The heavy-loaded airship unloading balance control system of the present invention can be installed on the rigid structure of the airship. When designing the overall structural mass distribution of the airship, the mass of the "heavy-loaded airship unloading balance control system" equipment can be used to perform static balancing; it is also convenient for the repair and maintenance of the "heavy-loaded airship unloading balance control system" equipment.

[0040] The design function of the "heavy-loaded airship unloading balance control system" of the present invention is supported and guaranteed by the following technical conditions and design essentials:

[0041] Data acquisition system: uses a variety of sensors and sensing circuits to collect relevant data, such as airbag pressure, airbag skin pressure, gas temperature, humidity, lift gas volume, airship center of gravity position, lift distribution effect data, etc., and analyzes and processes it through the central computer data processing system as the basis for the "heavy-loaded airship unloading balance control system" to perform operations.

[0042] The present invention uses a photoelectric conversion circuit to transmit the data information collected by the "data acquisition system" through the "optical fiber transmission" technology, overcoming the problem of telex data information technology. The data information is distorted due to the loss of data information caused by the long airship data information transmission line, the influence of the "self-excited electromagnetic signal" generated by the transmission circuit on the data information, and the influence of external electromagnetic interference on the data information, etc., which causes the computer management system to issue an erroneous instruction, causing the "heavy-loaded airship unloading balance control system" to make an erroneous operation. In the application of the airship design engineering of the present invention, the telex data information technology scheme was used. During the test of the machine, the central computer management system frequently had the problem of false alarms. Therefore, the present invention changes to optical fiber transmission, the instructions are correct, and the operation is accurate.

[0043] Technical parameter design of "heavy-loaded airship unloading balance control system":

[0044] Pipeline design: The gas pipeline is divided into rigid pipeline and flexible pipeline. The exhaust pipeline is designed as a high-pressure rigid pipeline with a diameter of D≥100mm. The gas delivery pipeline is a flexible high-pressure gas pipeline with a diameter of D≥100mm. The large-bore gas pipeline is adopted because the "unloading balance control system" has a huge gas delivery volume per unit time; the flow rate of compressed gas pipeline is increased to reduce the impact damage of the released gas impact pressure on the lift airbag, and the rapid decompression and expansion of the gas absorbs heat, causing the local temperature to drop and freeze to form pipeline blockage or obstruction.

[0045] Single-way electronically controlled gas valve: The system design requires that the direction of pipeline gas delivery is irreversible. All pipeline gas valves are "single-way electronically controlled" valves. The single-way electronically controlled gas valves on the gas delivery pipeline have the function of adjusting the gas volume (pressure reduction) and use the single-way electronically controlled gas valve with the highest sealing level;

[0046] Technical parameters of multi-stage gas compressor design: Since the amount of lift gas compressed or released by the "unloading balance control system" is as high as tens of thousands of cubic meters or even hundreds of thousands of cubic meters, it is impossible to compress hundreds of thousands of cubic meters of lift gas to a pressure of 100,000 Pa within dozens of hours with a single gas compressor. The "present invention" design uses a multi-stage compressor to complete it;

[0047] High-pressure gas tank design technical parameters: The "high-pressure gas tank" of the present invention adopts carbon fiber filament "winding" molding technology and manufactures the "high-pressure gas tank" according to design data (size). The "high modulus" of carbon fiber composite materials is used to reduce the weight of the high-pressure gas tank itself and enhance the internal load pressure of the high-pressure gas tank to 150,000-200,000 Pa. The design of the "present invention" can be completed with the current manufacturing technology and process level.

[0048] The design scheme of the "heavy-loaded airship unloading balance control system" of the "present invention" can fully realize and complete its design functions under the conditions of ensuring the above technical design parameters and technical design essentials.

[0049] In the above description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed above.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Heavy-load airship unloading balance control system, characterized in that: It includes a controller, a power circuit control system, a data acquisition system and several groups of gas circuit systems; Each gas circuit system includes a loop system consisting of a buoyancy air bag, a one-way air valve, a primary compressor, a multi-stage compressor, a high-pressure gas tank, a total pressure-reducing one-way air valve, a buffer gas tank, and a pressure-reducing one-way air valve connected in sequence through a gas pipeline; The controller is used to analyze and execute control instructions, and to control and manage the data acquisition system, the power circuit system and the gas circuit system; The data acquisition system uses sensors to instantly collect data such as pressure, buoyancy, temperature, and attitude of the main airbag in the airship and transmits it to the controller for analysis; The power circuit control system realizes the opening and closing of the one-way valve in the gas circuit system by receiving the control designation of the controller, and shrinks the buoyancy gas in the buoyancy airbag to the high-pressure gas tank through the multi-stage compressor to reduce the total lift of the airship; or releases the high-pressure helium in the high-pressure gas tank into the buoyancy airbag to increase the total lift of the airship; The pressure-relief gas tank is used to reduce the pressure of the high-pressure buoyancy gas in the high-pressure gas tank.

2. The heavy-load airship unloading balance control system according to claim 1, characterized in that: The one-way air valve, the total pressure-reducing one-way air valve and the pressure-reducing one-way air valve are all electronic one-way controlled air valves.

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