Rapid erecting system based on carbon dioxide phase change acting and control method

Abstract

The invention relates to a rapid erecting system based on carbon dioxide phase change acting and a control method.The system comprises an oil tank, an oil pump, a pump-driven multi-way valve, an erecting oil cylinder, an energy accumulator and a gas-driven multi-way valve, an oil inlet of the pump-driven multi-way valve is connected with the oil tank through a first pipeline and the oil pump, and an oil return opening of the pump-driven multi-way valve is connected with the oil tank; a first working oil port of the pump-driven multi-way valve is connected with a positive cavity of the erecting oil cylinder through a third pipeline, a second working oil port of the pump-driven multi-way valve is connected with a reverse cavity of the erecting oil cylinder through a fourth pipeline, an energy storage chamber of the energy accumulator is filled with CO2, an oil chamber of the energy accumulator is connected with the first pipeline through a fifth pipeline, and an electromagnetic control valve is arranged on the fifth pipeline. An oil inlet and an oil return port of the gas-driven multi-way valve are correspondingly connected with the fifth pipeline and the oil tank, a first working oil port of the gas-driven multi-way valve is connected with the third pipeline, a second working oil port of the gas-driven multi-way valve is connected with the fourth pipeline, and the gas-driven multi-way valve has the advantages of being simple in structure, safe and reliable; the method has the advantages of being simple in process and convenient to operate.

Description

Technical Field

[0001] The present invention relates to an erection system, in particular to a rapid erection system based on carbon dioxide phase change to do work, and a control method for the erection system. Background Art

[0002] In the aerospace field, the conversion of the aircraft and its launch tube from the horizontal state to the vertical state is carried out through the erection system. The traditional erection system is generally hydraulically driven. Due to the limitations of volume, power and other factors, its erection speed is slow and difficult to improve. In order to solve the problem of slow erection speed, a new type of power source erection system has been developed in this field. Although the erection speed has been significantly improved, it has also produced some adverse effects in other aspects. For example, the gas-driven erection system has problems such as difficult thermal protection, non-reusable agents, and safety of pyrotechnics; and the gas-liquid combined drive erection system uses a mixed drive of high-pressure gas and hydraulic oil source, which has problems such as large storage volume of high-pressure gas and poor transportation and storage safety. Summary of the invention

[0003] The purpose of the present invention is to provide a rapid erection system and control method based on carbon dioxide phase change work. The erection system has the advantages of simple structure, low cost, fast erection speed, safety and reliability, and strong practicality; the control method has the advantages of simple process, convenient operation, and high execution efficiency.

[0004] In order to solve the above problems existing in the prior art, the present invention provides a rapid erection system based on carbon dioxide phase change work, including an oil tank, an oil pump, a pump-driven multi-way valve, an erection oil cylinder, an accumulator and an air-driven multi-way valve, the input port of the oil pump is connected to the oil tank, the oil inlet of the pump-driven multi-way valve is connected to the output port of the oil pump through a first pipeline, the oil return port of the pump-driven multi-way valve is connected to the oil tank through a second pipeline, the working oil port 1 of the pump-driven multi-way valve is connected to the positive cavity of the erection oil cylinder through a third pipeline, and the working oil port 2 of the pump-driven multi-way valve is connected to the reverse cavity of the erection oil cylinder through a fourth pipeline. The inner cavity of the accumulator is divided into an energy storage chamber and an oil chamber by a piston, a heating device is provided on the outside of the energy storage chamber, the energy storage chamber is filled with CO2, the oil chamber is connected to the first pipeline through a fifth pipeline, an electromagnetic control valve is provided on the fifth pipeline, the oil inlet of the air-driven multi-way valve is connected to the fifth pipeline between the electromagnetic control valve and the accumulator through a sixth pipeline, the oil return port of the air-driven multi-way valve is connected to the second pipeline through a seventh pipeline, the working oil port 1 of the air-driven multi-way valve is connected to the third pipeline through an eighth pipeline, and the working oil port 2 of the air-driven multi-way valve is connected to the fourth pipeline through a ninth pipeline.

[0005] Furthermore, the present invention provides a rapid erection system based on carbon dioxide phase change work, wherein the first pipeline is connected to the oil tank through a pressure control pipeline, a proportional overflow valve is provided on the pressure control pipeline, a balancing valve is provided between the third pipeline and the fourth pipeline, a variable throttle valve is provided on the fourth pipeline between the balancing valve and the erection cylinder, the variable throttle valve is connected in parallel with a fixed throttle valve and a first one-way valve, the connection point of the eighth pipeline and the third pipeline is between the balancing valve and the erection cylinder, and the connection point of the ninth pipeline and the fourth pipeline is between the balancing valve and the variable throttle valve.

[0006] Furthermore, the present invention provides a rapid erection system based on phase change of carbon dioxide to do work, wherein the first pipeline is connected to the oil tank through a pressure relief pipeline 1, and a first safety valve is provided on the pressure relief pipeline 1; the fourth pipeline between the variable throttle valve and the erection cylinder is connected to the oil tank through a pressure relief pipeline 2, and a second safety valve is provided on the pressure relief pipeline 2.

[0007] Furthermore, the present invention provides a rapid erection system based on carbon dioxide phase change work, wherein the oil pump is a constant pressure variable pump, the erection cylinder is a multi-stage hydraulic cylinder, the electromagnetic control valve is a two-position three-way electromagnetic reversing valve, an oil filter is provided on the first pipeline, the connection point between the pressure control pipeline and the first pipeline is between the oil filter and the pump drive multi-way valve, and the connection point between the pressure relief pipeline and the first pipeline is between the oil filter and the oil pump.

[0008] Furthermore, the present invention provides a rapid erection system based on phase change of carbon dioxide, wherein a second one-way valve is provided on the first pipeline between the oil filter and the oil pump, and the connection point between the pressure relief pipeline 1 and the first pipeline is between the oil filter and the second one-way valve.

[0009] Furthermore, the present invention provides a rapid erection system based on phase change of carbon dioxide, wherein a third one-way valve and a fourth one-way valve are provided on the fifth pipeline and the sixth pipeline respectively, the third one-way valve is located between the electromagnetic control valve and the accumulator, and the connection point between the sixth pipeline and the fifth pipeline is located between the third one-way valve and the accumulator.

[0010] Furthermore, the present invention provides a rapid erection system based on phase change of carbon dioxide, wherein a stop valve is provided on the fifth pipeline between the third one-way valve and the accumulator, and the connection point between the sixth pipeline and the fifth pipeline is between the third one-way valve and the stop valve.

[0011] Furthermore, the present invention provides a rapid erection system based on phase change of carbon dioxide, wherein a first pressure sensor is provided on the first pipeline between the oil filter and the pump-driven multi-way valve, a second pressure sensor is provided on the fourth pipeline between the variable throttle valve and the erection cylinder, and a third pressure sensor and a temperature sensor are provided on the energy storage chamber of the accumulator.

[0012] Based on the same concept, the present invention also provides a control method for the above-mentioned rapid erection system, comprising the following steps:

[0013] S1, start the oil pump, open the electromagnetic control valve, fill the hydraulic oil into the oil chamber of the accumulator through the first pipeline and the fifth pipeline, and when the pressure in the energy storage chamber of the accumulator reaches a first pressure value, stop the oil pump and close the electromagnetic control valve;

[0014] S2, start the oil pump, and gradually open the pump drive multi-way valve, drive the launching tube to perform the erection action through the erection oil cylinder, when the erection angle reaches the first angle value, heat the CO2 in the accumulator through the heating device, and when the pressure of the energy storage chamber of the accumulator reaches the second pressure value, gradually open the gas drive multi-way valve;

[0015] S3, when the vertical angle reaches the second angle value, the gas drive multi-way valve is gradually closed, and when the vertical angle reaches the third angle value, the gas drive multi-way valve is completely closed, and the pump drive multi-way valve is gradually closed, and the flow area of ​​the variable throttle valve is gradually reduced;

[0016] S4. When the vertical angle reaches 90°, completely close the pump drive multi-way valve;

[0017] The erection angle refers to the angle between the axis of the launch tube and the horizontal plane.

[0018] Furthermore, the present invention provides a control method for a rapid erection system, wherein the first pressure value and the second pressure value are set according to the monitoring point pressure of CO2, the first pressure value is 10MPa, the second pressure value is 32MPa, the first angle value is 3°, the second angle value is 70°, and the third angle value is 80°.

[0019] Compared with the prior art, the present invention provides a rapid erection system and control method based on carbon dioxide phase change work, which has the following advantages: the present invention arranges an oil tank, an oil pump, a pump-driven multi-way valve, an erection oil cylinder, an accumulator and an air-driven multi-way valve, so that the input port of the oil pump is connected to the oil tank, the oil inlet of the pump-driven multi-way valve is connected to the output port of the oil pump through a first pipeline, the oil return port of the pump-driven multi-way valve is connected to the oil tank through a second pipeline, the working oil port 1 of the pump-driven multi-way valve is connected to the positive cavity of the erection oil cylinder through a third pipeline, and the working oil port 2 of the pump-driven multi-way valve is connected to the reverse cavity of the erection oil cylinder through a fourth pipeline. The inner cavity of the accumulator is divided into an energy storage chamber and an oil chamber by a piston, a heating device is arranged outside the energy storage chamber, CO2 is filled in the energy storage chamber, the oil chamber is connected to the first pipeline through the fifth pipeline, and an electromagnetic control valve is arranged on the fifth pipeline, wherein the oil inlet of the gas-driven multi-way valve is connected to the fifth pipeline between the electromagnetic control valve and the accumulator through the sixth pipeline, the oil return port of the gas-driven multi-way valve is connected to the second pipeline through the seventh pipeline, the working oil port 1 of the gas-driven multi-way valve is connected to the third pipeline through the eighth pipeline, and the working oil port 2 of the gas-driven multi-way valve is connected to the fourth pipeline through the ninth pipeline. Thus, a rapid erection system based on carbon dioxide phase change work is formed, which has a simple structure, low cost, fast erection speed, safety, reliability and strong practicality. Before erection, hydraulic oil is filled into the oil chamber of the accumulator to compress the CO2 in the energy storage chamber. The specific process is as follows: start the oil pump and open the electromagnetic control valve, and fill the oil chamber of the accumulator through the first pipeline and the fifth pipeline. When the pressure of CO2 in the energy storage chamber reaches the set pressure, stop the oil pump and close the electromagnetic control valve. During the erection process, the erection speed can be effectively improved by merging the hydraulic oil in the accumulator into the erection main oil circuit (third pipeline). The specific process is as follows: start the oil pump and gradually open the pump drive multi-way valve. The hydraulic oil in the oil tank will enter the positive cavity of the erection cylinder through the oil pump, the first pipeline, the pump drive multi-way valve and the third pipeline in turn, and drive the launch tube to perform the erection action through the erection cylinder. The hydraulic oil in the reverse cavity of the erection cylinder will flow back to the oil tank through the fourth pipeline, the pump drive multi-way valve and the second pipeline in turn; the CO2 in the energy storage chamber is heated by a heating device, and the CO2 undergoes a phase change from liquid to supercritical state and enters through the nozzle in the energy storage chamber. On the gas side, the pressure of CO2 in the energy storage chamber increases rapidly; the gas-driven multi-way valve is gradually opened, and the hydraulic oil in the oil chamber is driven by the high-pressure CO2, and will be quickly merged into the third pipeline through the sixth pipeline, the gas-driven multi-way valve and the eighth pipeline in sequence, effectively increasing the flow of hydraulic oil entering the positive cavity of the erection cylinder, thereby increasing the erection speed of the launch tube; when the launch tube is erected to a certain angle, the gas-driven multi-way valve is gradually closed to reduce the flow of hydraulic oil merged into the third pipeline. When the launch tube is erected to a nearly in-place angle, the gas-driven multi-way valve is completely closed, and the pump-driven multi-way valve is gradually closed. When the launch tube is erected to a vertical state, the pump-driven multi-way valve is completely closed. At this point, a erection process is completed.The present invention adopts a co-driven erection scheme of CO2 phase change working drive combined with hydraulic oil source driving, which effectively improves the erection speed compared with the traditional hydraulic drive erection scheme, and effectively ensures the stability of the erection process and the safety of the erection equipment by reasonably configuring the working stage of CO2 phase change working; compared with the gas drive scheme, it effectively solves the problems of thermal protection and pyrotechnics, and improves the system safety; compared with the high-pressure gas and hydraulic oil mixed drive scheme, it effectively reduces the volume, is conducive to the overall layout, and reduces the storage pressure of the power source (CO2), and improves the safety of transportation and storage. The control method of the rapid erection system provided by the present invention has the advantages of simple process and convenient operation.

[0020] The following is a further detailed description of a rapid erection system and control method based on carbon dioxide phase change work according to the present invention in conjunction with the specific embodiments shown in the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a rapid erection system based on carbon dioxide phase change work according to the present invention;

[0022] Figure 2 is the three-phase diagram of carbon dioxide;

[0023] Figure 3 Schematic diagram of the principle of the accumulator in the present invention. DETAILED DESCRIPTION

[0024] First of all, it should be explained that the directional words such as up, down, left, right, front and back described in the present invention are only described according to the drawings for the convenience of understanding, and are not intended to limit the technical solution and the scope of protection of the present invention.

[0025] like Figures 1 to 3The specific implementation of the rapid erection system based on the phase change of carbon dioxide of the present invention is shown, comprising an oil tank 1, an oil pump 2, a pump-driven multi-way valve 3, an erection oil cylinder 4, an accumulator 5 and an air-driven multi-way valve 6. The input port of the oil pump 2 is connected to the oil tank 1. The oil inlet of the pump-driven multi-way valve 3 is connected to the output port of the oil pump 2 through the first pipeline 31, the oil return port of the pump-driven multi-way valve 3 is connected to the oil tank 1 through the second pipeline 32, the working oil port 1 of the pump-driven multi-way valve 3 is connected to the positive cavity of the erection oil cylinder 4 through the third pipeline 33, and the working oil port 2 of the pump-driven multi-way valve 3 is connected to the reverse cavity of the erection oil cylinder 4 through the fourth pipeline 34. The inner cavity of the accumulator 5 is divided into an energy storage chamber and an oil chamber by a piston 51, a heating device (not shown in the figure) is arranged outside the energy storage chamber, CO2 is filled in the energy storage chamber, the oil chamber is connected to the first pipeline 31 through the fifth pipeline 52, and an electromagnetic control valve 521 is arranged on the fifth pipeline 52. Among them, the oil inlet of the air-driven multi-way valve 6 is connected to the fifth pipeline 52 between the electromagnetic control valve 521 and the accumulator 5 through the sixth pipeline 61, the oil return port of the air-driven multi-way valve 6 is connected to the second pipeline 32 through the seventh pipeline 62, the working oil port 1 of the air-driven multi-way valve 6 is connected to the third pipeline 33 through the eighth pipeline 63, and the working oil port 2 of the air-driven multi-way valve 6 is connected to the fourth pipeline 34 through the ninth pipeline 64.

[0026] The above arrangement constitutes a rapid erection system based on carbon dioxide phase change work with simple structure, low cost, fast erection speed, safety, reliability and strong practicality. Before erection, hydraulic oil is filled into the oil chamber of the accumulator 5 to compress the CO2 in the energy storage chamber. The specific process is as follows: start the oil pump 2 and open the electromagnetic control valve 521, and fill the oil chamber of the accumulator 5 with hydraulic oil through the first pipeline 31 and the fifth pipeline 52. When the pressure of CO2 in the energy storage chamber reaches the set pressure, stop the oil pump 2 and close the electromagnetic control valve 521. During the erection process, the erection speed can be effectively improved by merging the hydraulic oil in the accumulator 5 into the third pipeline 33. The specific process is as follows: start the oil pump 2 and gradually open the pump-driven multi-way valve 3. The hydraulic oil in the oil tank 1 will enter the positive cavity of the erection cylinder 4 through the oil pump 2, the first pipeline 31, the pump-driven multi-way valve 3 and the third pipeline 33 in sequence, and drive the launching tube 100 to perform the erection action through the erection cylinder 4. The hydraulic oil in the reverse cavity of the erection cylinder 4 will flow back to the oil tank 1 through the fourth pipeline 34, the pump-driven multi-way valve 3 and the second pipeline 32 in sequence; use the heating device to heat the CO2 in the energy storage chamber, and the CO2 undergoes a phase change from liquid to supercritical state and enters the gas state through the nozzle 53 in the energy storage chamber. On the side, the pressure of CO2 in the energy storage chamber increases rapidly at this time; the gas-driven multi-way valve 6 is gradually opened, and the hydraulic oil in the oil chamber is driven by the high-pressure CO2, and will be quickly merged into the third pipeline through the sixth pipeline 61, the gas-driven multi-way valve 6 and the eighth pipeline 63 in sequence, which effectively increases the flow of hydraulic oil entering the positive cavity of the erection cylinder 4, thereby increasing the erection speed of the launch tube 100; when the launch tube 100 is erected to a certain angle, the gas-driven multi-way valve 6 is gradually closed to reduce the flow of hydraulic oil merged into the third pipeline 33. When the launch tube 100 is erected to a nearly in-place angle, the gas-driven multi-way valve 6 is completely closed, and the pump-driven multi-way valve 3 is gradually closed. When the launch tube 100 is erected to a vertical state, the pump-driven multi-way valve 3 is completely closed. At this point, a erection process is completed. The present invention adopts a co-driven erection scheme of CO2 phase change work drive combined with hydraulic oil source drive. Compared with the traditional hydraulic drive erection scheme, the erection speed is effectively improved, and the stability of the erection process and the safety of the erection equipment are effectively guaranteed by reasonably configuring the working stage of CO2 phase change work; compared with the gas drive scheme, the problems of thermal protection and pyrotechnics are effectively solved, and the system safety is improved; compared with the high-pressure gas and hydraulic oil mixed drive scheme, the volume is effectively reduced, which is beneficial to the overall layout, and the storage pressure of the power source (CO2) is reduced, and the safety of transportation and storage is improved. It should be noted that the structure of the accumulator 5 and the phase change work principle of CO2 are well known to those skilled in the art; the launch tube 100 (containing the aircraft) is an existing device in the field, and its installation and connection relationship with the erection cylinder 4 is a prior art, which will not be repeated here.

[0027] As an optimization solution, the present embodiment connects the first pipeline 31 to the oil tank 1 through the pressure control pipeline 35, and a proportional relief valve 351 is provided on the pressure control pipeline 35. At the same time, the present embodiment provides a balancing valve 36 between the third pipeline 33 and the fourth pipeline 34, and provides a variable throttle valve 341 on the fourth pipeline 34 between the balancing valve 36 and the erecting cylinder 4, and connects the fixed throttle valve 342 and the first non-return valve 343 in parallel to the variable throttle valve 341, wherein the connection point between the eighth pipeline 63 and the third pipeline 33 is between the balancing valve 36 and the erecting cylinder 4, and the connection point between the ninth pipeline 64 and the fourth pipeline 34 is between the balancing valve 36 and the variable throttle valve 341. This structural arrangement can effectively control the size of the system pressure through the pressure control pipeline 35 and the proportional relief valve 351; the use of the balance valve 36 to provide back pressure when the launch tube 100 is leveled can effectively avoid the leveling speed being too fast, thereby improving safety; when the launch tube 100 is about to be erected, the variable throttle valve 341 is used to reduce the flow area, which can effectively control the deceleration of the erection and improve stability; when the variable throttle valve 341 is closed, the fixed throttle valve 342 is used to provide the minimum flow area for the return oil circuit, thereby ensuring reliability; when the launch tube 100 is leveled, the first one-way valve 343 is used to avoid the fixed throttle valve 342 and the variable throttle valve 341 from having an adverse effect on the leveling action.

[0028] As an optimization scheme, this specific implementation makes the first pipeline 31 connected to the oil tank 1 through the pressure relief pipeline 1 37, and a first safety valve 371 is set on the pressure relief pipeline 1 37; similarly, the fourth pipeline 34 between the variable throttle valve 341 and the erecting oil cylinder 4 is connected to the oil tank 1 through the pressure relief pipeline 2 38, and a second safety valve 381 is set on the pressure relief pipeline 2 38. This setting, when the pressure of the first pipeline 31 is too high, the first safety valve 371 will automatically open and return the hydraulic oil in the first pipeline 31 to the oil tank 1 through the pressure relief pipeline 1 37 for pressure relief; when the pressure of the fourth pipeline 34 is too high, the second safety valve 381 will automatically open and return the hydraulic oil in the fourth pipeline 34 to the oil tank 1 through the pressure relief pipeline 2 38 for pressure relief, thereby improving the safety and reliability of the system. In order to accurately control the oil pressure, the oil pump 2 of this specific embodiment adopts a constant pressure variable displacement pump. In order to ensure sufficient stroke, the erecting cylinder 4 of this specific embodiment adopts a multi-stage hydraulic cylinder. For ease of control, the electromagnetic control valve 521 of this specific embodiment adopts a two-position three-way electromagnetic reversing valve. In order to ensure the cleanliness of the hydraulic oil and the stability and reliability of the system, the first pipeline 31 is provided with an oil filter 311 in this specific embodiment, wherein the connection point between the pressure control pipeline 35 and the first pipeline 31 is between the oil filter 311 and the pump drive multi-way valve 3, and the connection point between the pressure relief pipeline 37 and the first pipeline 31 is between the oil filter 311 and the oil pump 2.

[0029] As a specific embodiment, the present invention sets a second one-way valve 312 on the first pipeline 31 between the oil filter 311 and the oil pump 2 to prevent the hydraulic oil in the first pipeline 31 from flowing back, thereby improving the stability and reliability of the system. Among them, the connection point between the pressure relief pipeline 1 37 and the first pipeline 31 is between the oil filter 311 and the second one-way valve 312. Similarly, the third one-way valve 522 and the fourth one-way valve 611 are correspondingly set on the fifth pipeline 52 and the sixth pipeline 61 in this specific embodiment. The third one-way valve 522 can prevent the hydraulic oil in the fifth pipeline 52 from flowing back, and the fourth one-way valve 611 can prevent the hydraulic oil in the sixth pipeline 61 from flowing back, thereby also improving the stability and reliability of the system. Among them, the third one-way valve 522 is between the electromagnetic control valve 521 and the accumulator 5, and the connection point between the sixth pipeline 61 and the fifth pipeline 52 is between the third one-way valve 522 and the accumulator 5. In addition, in order to improve safety, reliability and control convenience, the present embodiment further provides a stop valve 523 on the fifth pipeline 52 between the third one-way valve 522 and the accumulator 5, so as to cut off the passage between the accumulator 5 and other components by closing the stop valve 523 when necessary. The connection point between the sixth pipeline 61 and the fifth pipeline 52 is between the third one-way valve 522 and the stop valve 523. In practical applications, in order to intuitively understand the pressure at each position, the present invention provides a first pressure sensor on the first pipeline 31 between the oil filter 311 and the pump-driven multi-way valve 3, a second pressure sensor on the fourth pipeline 34 between the variable throttle valve 341 and the erecting cylinder 4, and a third pressure sensor and a temperature sensor in the energy storage chamber of the accumulator 5.

[0030] Based on the same concept, the present invention also provides a control method for the above-mentioned rapid erection system, which specifically comprises the following steps:

[0031] S1, start the oil pump 2, open the electromagnetic control valve 521, and fill the hydraulic oil into the oil chamber of the accumulator 5 through the first pipeline 31 and the fifth pipeline 52. When the pressure of the energy storage chamber of the accumulator 5 reaches the first pressure value, stop the oil pump 2 and close the electromagnetic control valve 521. This step completes the filling of the hydraulic oil into the accumulator 5 to prepare for the erection action.

[0032] S2, start the oil pump 2, and gradually open the pump-driven multi-way valve 3, drive the launching tube 100 to perform the erection action through the erection oil cylinder 4, when the erection angle reaches a first angle value, heat the CO2 in the accumulator 5 through the heating device, and when the pressure in the energy storage chamber of the accumulator 5 reaches a second pressure value, gradually open the gas-driven multi-way valve 6.

[0033] After the erection action begins, heating is used to cause the CO2 to undergo a phase change from a liquid state to a supercritical state, and the pressure of the CO2 will increase rapidly. After the gas-driven multi-way valve 6 is gradually opened, the hydraulic oil in the oil chamber of the accumulator 5 is driven by the high-pressure CO2 and will be quickly merged into the third pipeline through the sixth pipeline 61, the gas-driven multi-way valve 6 and the eighth pipeline 63 in sequence, which can effectively increase the hydraulic oil flow entering the positive cavity of the erection cylinder 4, thereby increasing the erection speed of the launch tube 100.

[0034] S3, when the erection angle reaches the second angle value, the gas-driven multi-way valve 6 is gradually closed, and when the erection angle reaches the third angle value, the gas-driven multi-way valve 6 is completely closed, and the pump-driven multi-way valve 3 is gradually closed, and the flow area of ​​the variable throttle valve 341 is gradually reduced. In the erection almost in place stage, by gradually cutting out the flow provided by the accumulator 5, the speed when the erection is almost in place can be avoided to be too high, ensuring stability and reliability.

[0035] S4, when the vertical angle reaches 90°, completely close the pump drive multi-way valve 3. So far, the vertical process is completed.

[0036] The erection angle refers to the angle between the axis of the launch tube 100 and the horizontal plane. The first pressure value and the second pressure value are set according to the monitoring point pressure of CO2. In practical applications, the present invention usually sets the first pressure value to 10MPa, the second pressure value to 32MPa, the first angle value to 3°, the second angle value to 70°, and the third angle value to 80°. However, it should be pointed out that the first angle value, the second angle value and the third angle value are not limited to the above-mentioned values, and can also be slightly adjusted as needed.

[0037] The above embodiments are only descriptions of the preferred implementation modes of the present invention, and are not intended to limit the protection scope of the present invention. Without departing from the design concept of the present invention, various modifications made by those skilled in the art based on the technical solution of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. A rapid erection system based on carbon dioxide phase change work, characterized in that: The invention comprises an oil tank (1), an oil pump (2), a pump-driven multi-way valve (3), an erecting oil cylinder (4), an accumulator (5) and an air-driven multi-way valve (6); the input port of the oil pump (2) is connected to the oil tank (1); the oil inlet of the pump-driven multi-way valve (3) is connected to the output port of the oil pump (2) via a first pipeline (31); the oil return port of the pump-driven multi-way valve (3) is connected to the oil tank (1) via a second pipeline (32); the working oil port 1 of the pump-driven multi-way valve (3) is connected to the positive cavity of the erecting oil cylinder (4) via a third pipeline (33); the working oil port 2 of the pump-driven multi-way valve (3) is connected to the negative cavity of the erecting oil cylinder (4) via a fourth pipeline (34); the inner cavity of the accumulator (5) is divided into energy storage chambers by a piston (51). and an oil chamber, a heating device is provided outside the energy storage chamber, the energy storage chamber is filled with CO2, the oil chamber is connected to the first pipeline (31) through a fifth pipeline (52), an electromagnetic control valve (521) is provided on the fifth pipeline (52), the oil inlet of the air-driven multi-way valve (6) is connected to the fifth pipeline (52) between the electromagnetic control valve (521) and the accumulator (5) through a sixth pipeline (61), the oil return port of the air-driven multi-way valve (6) is connected to the second pipeline (32) through a seventh pipeline (62), the working oil port 1 of the air-driven multi-way valve (6) is connected to the third pipeline (33) through an eighth pipeline (63), and the working oil port 2 of the air-driven multi-way valve (6) is connected to the fourth pipeline (34) through a ninth pipeline (64).

2. The rapid erection system based on carbon dioxide phase change work according to claim 1 is characterized in that: The first pipeline (31) is connected to the oil tank (1) through a pressure control pipeline (35), and a proportional overflow valve (351) is provided on the pressure control pipeline (35). A balancing valve (36) is provided between the third pipeline (33) and the fourth pipeline (34), and a variable throttle valve (341) is provided on the fourth pipeline (34) between the balancing valve (36) and the erecting cylinder (4). The variable throttle valve (341) is connected in parallel to a fixed throttle valve (342) and a first non-return valve (343). The connection point between the eighth pipeline (63) and the third pipeline (33) is located between the balancing valve (36) and the erecting cylinder (4), and the connection point between the ninth pipeline (64) and the fourth pipeline (34) is located between the balancing valve (36) and the variable throttle valve (341).

3. The rapid erection system based on carbon dioxide phase change work according to claim 2 is characterized in that: The first pipeline (31) is connected to the oil tank (1) via a first pressure relief pipeline (37), and a first safety valve (371) is provided on the first pressure relief pipeline (37). The fourth pipeline (34) between the variable throttle valve (341) and the erecting cylinder (4) is connected to the oil tank (1) via a second pressure relief pipeline (38), and a second safety valve (381) is provided on the second pressure relief pipeline (38).

4. The rapid erection system based on carbon dioxide phase change work according to claim 3 is characterized in that: The oil pump (2) is a constant pressure variable displacement pump, the erecting oil cylinder (4) is a multi-stage hydraulic cylinder, the electromagnetic control valve (521) is a two-position three-way electromagnetic reversing valve, an oil filter (311) is provided on the first pipeline (31), the connection point between the pressure control pipeline (35) and the first pipeline (31) is between the oil filter (311) and the pump drive multi-way valve (3), and the connection point between the pressure relief pipeline 1 (37) and the first pipeline (31) is between the oil filter (311) and the oil pump (2).

5. The rapid erection system based on carbon dioxide phase change work according to claim 4 is characterized in that: A second one-way valve (312) is provided on the first pipeline (31) between the oil filter (311) and the oil pump (2), and the connection point between the first pressure relief pipeline (37) and the first pipeline (31) is located between the oil filter (311) and the second one-way valve (312).

6. The rapid erection system based on carbon dioxide phase change work according to claim 4 is characterized in that: The fifth pipeline (52) and the sixth pipeline (61) are provided with a third one-way valve (522) and a fourth one-way valve (611) respectively, the third one-way valve (522) is located between the electromagnetic control valve (521) and the accumulator (5), and the connection point between the sixth pipeline (61) and the fifth pipeline (52) is located between the third one-way valve (522) and the accumulator (5).

7. The rapid erection system based on carbon dioxide phase change work according to claim 6 is characterized in that: A stop valve (523) is provided on the fifth pipeline (52) between the third one-way valve (522) and the accumulator (5), and the connection point between the sixth pipeline (61) and the fifth pipeline (52) is located between the third one-way valve (522) and the stop valve (523).

8. The rapid erection system based on carbon dioxide phase change work according to claim 4 is characterized in that: A first pressure sensor is provided on the first pipeline (31) between the oil filter (311) and the pump-driven multi-way valve (3), a second pressure sensor is provided on the fourth pipeline (34) between the variable throttle valve (341) and the vertical oil cylinder (4), and a third pressure sensor and a temperature sensor are provided in the energy storage chamber of the accumulator (5).

9. A control method for the rapid erection system according to claim 4, characterized in that: The following steps are involved: S1, starting the oil pump (2), opening the electromagnetic control valve (521), and charging the hydraulic oil into the oil chamber of the accumulator (5) through the first pipeline (31) and the fifth pipeline (52); when the pressure in the energy storage chamber of the accumulator (5) reaches a first pressure value, stopping the oil pump (2) and closing the electromagnetic control valve (521); S2, starting the oil pump (2), and gradually opening the pump-driven multi-way valve (3), driving the launching tube (100) to perform an erection action through the erection oil cylinder (4), when the erection angle reaches a first angle value, heating the CO2 in the accumulator (5) through the heating device, and when the pressure of the energy storage chamber of the accumulator (5) reaches a second pressure value, gradually opening the gas-driven multi-way valve (6); S3, when the erection angle reaches a second angle value, the gas-driven multi-way valve (6) is gradually closed; when the erection angle reaches a third angle value, the gas-driven multi-way valve (6) is completely closed, and the pump-driven multi-way valve (3) is gradually closed, and the flow area of ​​the variable throttle valve (341) is gradually reduced; S4. When the vertical angle reaches 90°, completely close the pump drive multi-way valve (3); The erection angle refers to the angle between the axis of the launch tube (100) and the horizontal plane.

10. The control method of the rapid erection system according to claim 9, characterized in that: The first pressure value and the second pressure value are set according to the monitoring point pressure of CO2, the first pressure value is 10MPa, the second pressure value is 32MPa, the first angle value is 3°, the second angle value is 70°, and the third angle value is 80°.

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