Liquid and gas injection system and liquid and gas injection device

Abstract

The utility model discloses a liquid and gas injection system and a liquid and gas injection device, and relates to the field of portable liquid and gas injection equipment for artillers.The liquid and gas injection system comprises a liquid storage unit, a liquid injection unit, a gas storage unit, a gas injection unit and a detection unit, and the input end of the liquid storage unit is connected with a liquid supply source; the output end of the liquid storage unit is connected with the input end of the liquid injection unit, the output end of the liquid injection unit is connected with the anti-recoil device, the input end of the gas storage unit is connected with a gas supply source, the output end of the gas storage unit is connected with the input end of the gas injection unit, the output end of the gas injection unit is connected with the anti-recoil device, and the detection unit is connected with the anti-recoil device. The liquid amount and pressure in the reverse recoil device are detected through the detection unit, liquid injection is conducted on the reverse recoil device through the liquid injection unit according to the residual liquid amount difference, gas injection is conducted on the reverse recoil device through the gas injection unit according to the residual pressure difference, and liquid injection and gas injection of the reverse recoil device are achieved.

Description

Technical Field

[0001] The present application relates to the field of liquid and gas injection equipment for portable artillery, and in particular to a liquid and gas injection system and a liquid and gas injection device. Background Art

[0002] Artillery has an irreplaceable position and role in war and is an important conventional weapon. The development of artillery, modern warfare and technological progress are inseparable. As the core part of artillery, the recoil device connects the gun body and the gun carriage. It uses the recoil movement of the gun body to reduce the hundreds of tons of force acting on the gun body to tens of tons before acting on the gun carriage, solving the contradiction between power and mobility in artillery technology. The liquid and gas volume of the recoil device need to be adjusted frequently, and the recoil device needs to be filled with liquid and gas.

[0003] The existing liquid and gas injection equipment for the anti-recoil device is manually operated, which is relatively backward in terms of precision control and degree of automation. In addition, the device has a single function and low replenishment efficiency. Utility Model Content

[0004] In order to enhance the versatility of liquid and gas injection equipment and improve the automation performance of the equipment, the present application provides a liquid and gas injection system and a liquid and gas injection device.

[0005] In the first aspect, the present application provides a liquid injection and gas injection system, which adopts the following technical solution:

[0006] A liquid injection and gas injection system comprises a liquid storage unit, wherein an input end of the liquid storage unit is connected to a liquid supply source, and an output end of the liquid storage unit is connected to an input end of the liquid injection unit;

[0007] A liquid injection unit, the output end of which is connected to the anti-recoil device, and the liquid injection unit is used to inject liquid into the anti-recoil device;

[0008] A gas storage unit, wherein the input end of the gas storage unit is connected to a gas supply source, and the output end of the gas storage unit is connected to the input end of the gas injection unit;

[0009] An air injection unit, the output end of which is connected to the anti-recoil device, and the air injection unit is used to inject air into the anti-recoil device;

[0010] A detection unit is connected to the anti-recoil device, and is used to measure the amount of liquid and the pressure in the anti-recoil device.

[0011] By adopting the above technical scheme, the detection unit detects the liquid volume and pressure in the anti-recoil device, and compares them with the standard pressure to make a difference; the anti-recoil device is injected with liquid through the liquid injection unit according to the residual liquid volume, and the anti-recoil device is injected with gas through the gas injection unit according to the differential pressure, thereby realizing the injection of liquid and gas into the anti-recoil device. The overall system can detect the required liquid volume and pressure in the anti-recoil device, has strong versatility, and high overall liquid and gas injection efficiency.

[0012] Preferably, the detection unit comprises a vacuum detection bottle, the vacuum detection bottle is connected to the anti-recoil device, a fifth solenoid valve is arranged between the vacuum detection bottle and the anti-recoil device, and a pressure sensor is arranged between the anti-recoil device and the fifth solenoid valve.

[0013] By adopting the above technical scheme, the anti-recoil device is connected through a vacuum detection bottle, and the pressure in the anti-recoil device before and after the connection is calculated respectively. The pressure and liquid volume in the anti-recoil device are calculated by the air release method, and then the difference between the existing liquid volume in the anti-recoil device and the existing pressure and the standard value is obtained, so as to facilitate the control of the liquid and gas injection volume, thereby improving the overall versatility of the system and having good automation performance.

[0014] Preferably, the liquid storage unit comprises a liquid storage bottle, the outlet of the liquid storage bottle is connected to the recoil device through the liquid injection unit, and the inlet of the liquid storage bottle is connected to the liquid supply source;

[0015] A liquid injection tube is fixedly arranged on the inner shaft of the liquid storage bottle, a gap exists between the bottom of the liquid injection tube and the inner wall of the liquid storage bottle, the top of the liquid injection tube is connected with the outlet of the liquid storage bottle, and the inlet of the liquid storage bottle is also connected with the air supply source.

[0016] By adopting the above technical scheme, liquid is supplied to the liquid storage bottle through the liquid supply source. At the same time, when there is liquid in the liquid storage bottle, gas is continuously introduced into the liquid storage bottle to squeeze the liquid in the liquid storage bottle out of the liquid storage bottle outlet through the liquid injection tube, thereby realizing liquid injection into the recoil device.

[0017] Preferably, the liquid injection unit comprises a liquid inlet and a liquid injection port, the liquid inlet is connected to the outlet of the liquid storage bottle, a small liquid pump is arranged at one end of the liquid inlet away from the liquid storage bottle, a first solenoid valve is arranged between the small liquid pump and the liquid inlet, and the small liquid pump is used to extract the vacuum in the liquid storage bottle to facilitate the liquid supply source to inject liquid into the liquid storage bottle;

[0018] A second solenoid valve is arranged between the liquid injection port and the liquid inlet, one end of the liquid injection port away from the liquid inlet is connected to the anti-recoil device, and a flow meter is arranged between the liquid injection port and the anti-recoil device, and the flow meter is used to monitor the flow entering the anti-recoil device through the liquid injection port.

[0019] By adopting the above technical solution, the small liquid pump evacuates the liquid storage bottle, and then the liquid in the liquid supply source enters the liquid storage bottle, thereby realizing the liquid filling of the liquid storage bottle. The second solenoid valve is used to control the liquid in the liquid storage bottle to flow into the anti-recoil device, thereby realizing the liquid filling of the anti-recoil device, and the flow rate entering the anti-recoil device is monitored by the flow meter to improve the overall accuracy of the device.

[0020] Preferably, the gas storage unit comprises a gas storage bottle, the inlet of the gas storage bottle is connected to the gas supply source through the gas injection unit, and the outlet of the gas storage bottle is also connected to the recoil device through the gas injection unit;

[0021] The outlet of the gas storage bottle is also connected to the inlet of the liquid storage bottle, and a stop valve is arranged between the outlet of the gas storage bottle and the inlet of the liquid storage bottle.

[0022] By adopting the above technical solution, the recoil device can be supplied with gas through the gas cylinder, and the liquid storage bottle can be supplied with gas through the gas cylinder, and the gas can be squeezed on the inside of the liquid storage bottle to squeeze out the liquid in the liquid storage bottle, making the operation of the overall device simple and convenient.

[0023] Preferably, the gas injection unit comprises a gas inlet and a gas injection port, the gas inlet is arranged between the gas storage bottle and the gas supply source, and a third solenoid valve is arranged between the gas inlet and the gas storage bottle;

[0024] The gas injection port is arranged between the gas storage bottle and the anti-recoil device, and a fourth solenoid valve is arranged between the gas injection port and the gas storage bottle. The gas injection port is located between the fifth solenoid valve and the anti-recoil device.

[0025] By adopting the above technical solution, when there is no gas supply inside the gas cylinder, the gas supply source is connected to the anti-recoil device through the gas cylinder through the gas inlet, and controlled by the third solenoid valve and the fourth solenoid valve. The gas injection port connects the anti-recoil device to the vacuum detection bottle through the fifth solenoid valve, which is convenient for subsequent detection.

[0026] Preferably, the third solenoid valve is a three-way solenoid valve, and another outlet of the third solenoid valve is connected to the gas injection port.

[0027] By adopting the above technical solution, it is convenient to directly connect the air supply source to the air injection port, so as to directly supply air to the recoil device.

[0028] In a second aspect, the present application provides a liquid injection and gas injection device, which adopts the following technical solution:

[0029] A liquid injection and gas injection device comprises a liquid storage box, a main engine control box and the above-mentioned liquid injection and gas injection system, wherein the liquid storage bottle is arranged in the liquid storage box, and the liquid injection unit, gas storage unit, gas injection unit and detection unit are all arranged in the main engine control box.

[0030] By adopting the above technical scheme, it is convenient to inject liquid into the anti-recoil device through the liquid injection unit according to the residual liquid amount, and to inject gas into the anti-recoil device through the gas injection unit according to the differential pressure, thereby realizing the injection of liquid and gas into the anti-recoil device. The overall system can detect the required liquid amount and pressure in the anti-recoil device, has strong versatility, and high overall liquid and gas injection efficiency.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. The liquid volume and pressure in the anti-recoil device are detected by the detection unit, and compared with the standard pressure to make a difference. The anti-recoil device is injected with liquid through the liquid injection unit according to the residual liquid volume, and the anti-recoil device is injected with gas through the gas injection unit according to the residual pressure, so as to realize the injection of liquid and gas into the anti-recoil device. The overall system can detect the required liquid volume and pressure in the anti-recoil device, has strong versatility, and has high overall injection efficiency;

[0033] 2. Connect the anti-recoil device with the help of a vacuum detection bottle, and calculate the pressure in the anti-recoil device before and after the connection, and then calculate the pressure and liquid volume in the anti-recoil device by the air release method, so as to obtain the difference between the existing liquid volume in the anti-recoil device and the existing pressure and the standard value, so as to facilitate the control of the liquid and gas injection volume, thereby improving the overall versatility of the system and having good automation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the liquid and gas injection system of this embodiment;

[0035] Figure 2 This is a schematic diagram mainly showing the overall structure of the liquid and gas injection device of this embodiment;

[0036] Figure 3 This is a cross-sectional view mainly showing the liquid storage box and the liquid storage bottle of this embodiment;

[0037] Figure 4 This is a schematic diagram showing the structure of the host control box from a first perspective in this embodiment;

[0038] Figure 5 This is a second perspective schematic diagram mainly showing the structure inside the host control box of this embodiment.

[0039] Figure numerals: 1. liquid storage unit; 11. liquid storage bottle; 12. liquid injection tube; 2. liquid injection unit; 21. liquid inlet; 22. liquid injection port; 23. small liquid pump; 24. first solenoid valve; 25. second solenoid valve; 26. flow meter; 27. liquid discharge port; 3. gas storage unit; 31. gas storage bottle; 32. stop valve; 4. gas injection unit; 41. gas inlet; 42. gas injection port; 43. third solenoid valve; 44. fourth solenoid valve; 5. detection unit; 51. vacuum detection bottle; 52. fifth solenoid valve; 53. pressure sensor; 54. sixth solenoid valve; 55. exhaust port; 6. liquid storage tank; 7. host control box. DETAILED DESCRIPTION

[0040] The present application is further described in detail below in conjunction with the accompanying drawings.

[0041] The embodiment of the present application discloses a liquid and gas injection system.

[0042] Reference Figure 1 and Figure 2 The liquid and gas injection system includes a liquid storage unit 1, a liquid injection unit 2, a gas storage unit 3, a gas injection unit 4 and a detection unit 5, wherein the input end of the liquid storage unit 1 is connected to a liquid supply source, the output end of the liquid storage unit 1 is connected to the input end of the liquid injection unit 2, the output end of the liquid injection unit 2 is connected to an anti-recoil device, the liquid injection unit 2 is used to inject liquid into the anti-recoil device, the input end of the gas storage unit 3 is connected to an air supply source, the output end of the gas storage unit 3 is connected to the input end of the gas injection unit 4, the output end of the gas injection unit 4 is connected to the anti-recoil device, the gas injection unit 4 is used to inject gas into the anti-recoil device, the detection unit 5 is connected to the anti-recoil device, and the detection unit 5 is used to measure the liquid amount and pressure in the anti-recoil device.

[0043] Reference Figure 1 and Figure 3 The liquid storage unit 1 includes a liquid storage bottle 11, the outlet of the liquid storage bottle 11 is connected to the recoil device through the liquid injection unit 2, the inlet of the liquid storage bottle 11 is connected to the liquid supply source, the inner shaft of the liquid storage bottle 11 is fixedly provided with a liquid injection tube 12, there is a gap between the bottom of the liquid injection tube 12 and the inner wall of the liquid storage bottle 11, the top of the liquid injection tube 12 is connected to the outlet of the liquid storage bottle 11, and the inlet of the liquid storage bottle 11 is also connected to the gas supply source. By supplying gas to the liquid storage bottle 11, the liquid in the liquid storage bottle 11 is squeezed by the gas, flows upward from the bottom of the liquid injection tube 12, and flows out from the outlet of the liquid storage bottle 11, so that the liquid storage bottle 11 is supplied with liquid outward.

[0044] Reference Figure 1 , Figure 4 and Figure 5The liquid injection unit 2 includes a liquid inlet 21 and a liquid injection port 22. The liquid inlet 21 is connected to the outlet of the liquid storage bottle 11. A small liquid pump 23 is provided at one end of the liquid inlet 21 away from the liquid storage bottle 11. A first solenoid valve 24 is provided between the small liquid pump 23 and the liquid inlet 21. The small liquid pump 23 is used to extract the vacuum in the liquid storage bottle 11 to facilitate the liquid supply source to inject liquid into the liquid storage bottle 11. A second solenoid valve 25 is provided between the liquid injection port 22 and the liquid inlet 21. The end of the liquid injection port 22 away from the liquid inlet 21 is connected to the anti-recoil device, and a flow meter 26 is provided between the liquid injection port 22 and the anti-recoil device. The flow meter 26 is used to monitor the flow entering the anti-recoil device through the liquid injection port 22.

[0045] By opening the first electromagnetic valve 24, the liquid storage bottle 11 is evacuated by the small liquid pump 23, and the liquid in the liquid supply source is moved into the liquid storage bottle 11. By closing the first electromagnetic valve 24 and opening the second electromagnetic valve 25, the liquid in the liquid storage bottle 11 flows into the recoil device from the liquid injection port 22 through the liquid inlet 21, and during the flow process, the amount of liquid flowing into the recoil device is monitored by the flow meter 26. When the specified flow rate is reached, the second electromagnetic valve 25 is closed to complete the injection.

[0046] It should be noted that a discharge port 27 is provided on one side of the small liquid pump 23. By closing the outlet of the liquid storage bottle 11 and opening the first solenoid valve 24 and the second solenoid valve 25, the excess liquid in the anti-recoil device can be extracted through the small liquid pump 23. Specifically, according to the liquid amount in the anti-recoil device detected by the detection unit 5, when the detected liquid amount is greater than the required liquid amount, the small liquid pump 23 is used to extract the liquid, and when the detected liquid amount is less than the required liquid amount, the liquid is injected through the injection port 22.

[0047] Reference Figure 1 , Figure 4 and Figure 5 The gas storage unit 3 includes a gas cylinder 31, the inlet of the gas cylinder 31 is connected to the gas supply source through the gas injection unit 4, and the outlet of the gas cylinder 31 is also connected to the anti-recoil device through the gas injection unit 4. The outlet of the gas cylinder 31 is also connected to the inlet of the liquid storage bottle 11, and a stop valve 32 is provided between the outlet of the gas cylinder 31 and the inlet of the liquid storage bottle 11. When there is no external gas source, the anti-recoil device can be directly injected with gas through the gas cylinder 31, and the stop valve 32 can be controlled to directly ventilate the liquid storage bottle 11 through the gas cylinder 31, so that the liquid in the liquid storage bottle 11 is squeezed into the anti-recoil device for injection.

[0048] Reference Figure 1 , Figure 4 and Figure 5The gas injection unit 4 includes a gas inlet 41 and a gas injection port 42. The gas inlet 41 is arranged between the gas cylinder 31 and the gas supply source, and a third solenoid valve 43 is arranged between the gas inlet 41 and the gas cylinder 31. The gas injection port 42 is arranged between the gas cylinder 31 and the anti-recoil device, and a fourth solenoid valve 44 is arranged between the gas injection port 42 and the gas cylinder 31. The gas injection port 42 is located between the fifth solenoid valve 52 and the anti-recoil device. Among them, the third solenoid valve 43 is a three-way solenoid valve, and the other outlet of the third solenoid valve 43 is connected to the gas injection port 42.

[0049] Specifically, when there is no gas supply inside the gas cylinder 31, the gas supply source is connected to the anti-recoil device through the gas cylinder 31 through the gas inlet 41, and is controlled by the third solenoid valve 43 and the fourth solenoid valve 44. The gas injection port 42 connects the anti-recoil device to the vacuum detection bottle 51 through the fifth solenoid valve 52, which is convenient for subsequent detection. At the same time, the other outlet of the third solenoid valve 43 is connected to the gas injection port 42, so that the gas supply source is directly connected to the gas injection port 42, so as to directly supply gas to the anti-recoil device.

[0050] Reference Figure 1 , Figure 4 and Figure 5 The detection unit 5 includes a vacuum detection bottle 51, which is connected to the anti-recoil device, and a fifth electromagnetic valve 52 is provided between the vacuum detection bottle 51 and the anti-recoil device, and a pressure sensor 53 is provided between the anti-recoil device and the fifth electromagnetic valve 52. The vacuum detection bottle 51 is connected to the anti-recoil device, and the pressure in the anti-recoil device before and after the connection is calculated respectively, and the pressure and liquid volume in the anti-recoil device are calculated by the deflation method, so as to obtain the difference between the existing liquid volume in the anti-recoil device and the existing pressure and the standard value, so as to facilitate the control of the liquid and gas injection volume, thereby improving the overall versatility of the system and having good automation performance.

[0051] It should be noted that the vacuum detection bottle 51 is provided with an exhaust port 55 , and a sixth solenoid valve 54 is provided at the exhaust port 55 . The sixth solenoid valve 54 is used to control the opening and closing of the exhaust port 55 .

[0052] The specific detection method is to set the recoil device as container I and the vacuum detection bottle 51 as container II, wherein the volume of container I Vcomplex = Vliquid + Vgas (Vliquid is the volume of the liquid in container I, Vgas is the volume of the gas in container I), the air pressure of container I is P0, and the temperature is T0; the volume of container II is Vbottle (Vbottle includes the volume of the connecting pipe between container I and container II).

[0053] Based on the ideal gas state equation, V gas and V liquid are measured by the state change caused by releasing trace gas. The specific measurement process is as follows:

[0054] Open the connecting switch between container I and container II, and the overall gas volume will expand to V1 = Vgas + Vbottle, while the overall gas pressure will drop to P1, and the overall temperature will change to T1. Assuming that this process is an isothermal process, T0 = T1 = T, then according to the ideal gas state equation:

[0055] P0·V 气 =P1·V1;

[0056] From the above, we can get but,

[0057] P0 and P1 can be measured by the pressure sensor 53, and V bottle is known, so V gas can be obtained. At the same time, since V complex is known, V liquid can be obtained. By comparing the difference between the detected V liquid and the nominal liquid volume value, the difference is ΔV, and then according to the value of ΔV, the anti-recoil device is filled or drained. After completing the liquid volume calibration, the pressure sensor 53 transmits the real-time monitoring nitrogen pressure value P1 and the nominal value P0, and compares the difference through the computer, the difference is ΔP, and the anti-recoil device is filled or exhausted according to ΔP.

[0058] The present application also discloses a method for using the liquid and gas injection system, including:

[0059] S1, opening the first electromagnetic valve 24 and the small liquid pump 23 to evacuate the liquid storage bottle 11, thereby allowing the liquid in the liquid supply source to flow into the liquid storage bottle 11;

[0060] S2, close the first solenoid valve 24 and the small liquid pump 23, open the fifth solenoid valve 52, so that the anti-recoil device is connected to the vacuum detection bottle 51, and the liquid volume in the anti-recoil device is measured by the deflation method. After the measurement, the liquid volume is compared with the nominal liquid volume, and the injection or discharge is determined according to the difference. The fifth solenoid valve 52 is closed, and the pressure in the anti-recoil device is tested by the pressure sensor 53, and the measured pressure is compared with the nominal pressure, and the injection or discharge is determined according to the difference; S31, when it is necessary to inject liquid into the anti-recoil device, the liquid storage bottle 11 is ventilated through the air supply source or the stop valve 32 is opened, and the liquid in the liquid storage bottle 11 is discharged through the liquid injection pipe 12, and the second solenoid valve 25 is opened, and the discharged liquid enters the anti-recoil device through the liquid injection port 22, and the injection volume is monitored by the flow meter 26;

[0061] S32, when it is necessary to drain the anti-recoil device, the first solenoid valve 24 and the second solenoid valve 25 are opened, and the liquid of the anti-recoil device is sucked out by the small liquid pump 23;

[0062] S41, when it is necessary to inject gas into the anti-recoil device, the third solenoid valve 43 can be opened to directly supply gas to the gas injection port 42 through the gas supply source, thereby injecting gas into the anti-recoil device, or the fourth solenoid valve 44 can be opened to supply gas to the anti-recoil device through the gas storage bottle 31;

[0063] S42 , when the anti-recoil device needs to be exhausted, the fifth solenoid valve 52 and the sixth solenoid valve 54 are opened to exhaust the gas in the anti-recoil device through the exhaust port 55 .

[0064] The embodiment of the present application also discloses a liquid and gas injection device.

[0065] Reference Figure 1 and Figure 2 The liquid injection and gas injection device includes a liquid storage box 6 and a main engine control box 7. The main engine control box 7 is provided with the above-mentioned liquid injection and gas injection system. The main engine control box 7 is provided with a liquid inlet 21 and an air inlet 41, wherein the liquid inlet 21 is connected to the outlet of the liquid storage bottle 11, and the air inlet 41 is connected to the air supply source. The main engine control box 7 is also provided with a liquid injection port 22 and an air injection port 42, and both the liquid injection port 22 and the air injection port 42 are connected to the recoil device.

[0066] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A liquid and gas injection system, characterized in that: include: A liquid storage unit (1), wherein an input end of the liquid storage unit (1) is connected to a liquid supply source, and an output end of the liquid storage unit (1) is connected to an input end of a liquid injection unit (2); A liquid injection unit (2), the output end of the liquid injection unit (2) being connected to the anti-recoil device, and the liquid injection unit (2) being used to inject liquid into the anti-recoil device; A gas storage unit (3), wherein an input end of the gas storage unit (3) is connected to a gas supply source, and an output end of the gas storage unit (3) is connected to an input end of a gas injection unit (4); An air injection unit (4), the output end of the air injection unit (4) being connected to the anti-recoil device, and the air injection unit (4) being used to inject air into the anti-recoil device; A detection unit (5), the detection unit (5) being connected to the anti-recoil device, and the detection unit (5) being used to measure the amount of liquid and the pressure in the anti-recoil device.

2. A liquid and gas injection system according to claim 1, characterized in that: The detection unit (5) comprises a vacuum detection bottle (51), the vacuum detection bottle (51) being connected to the anti-recoil device, a fifth solenoid valve (52) being arranged between the vacuum detection bottle (51) and the anti-recoil device, and a pressure sensor (53) being arranged between the anti-recoil device and the fifth solenoid valve (52).

3. A liquid and gas injection system according to claim 2, characterized in that: The liquid storage unit (1) comprises a liquid storage bottle (11), the outlet of the liquid storage bottle (11) is connected to the recoil device via the liquid injection unit (2), and the inlet of the liquid storage bottle (11) is connected to the liquid supply source; A liquid injection tube (12) is fixedly arranged on the inner shaft of the liquid storage bottle (11), a gap exists between the bottom of the liquid injection tube (12) and the inner wall of the liquid storage bottle (11), the top of the liquid injection tube (12) is connected to the outlet of the liquid storage bottle (11), and the inlet of the liquid storage bottle (11) is also connected to the gas supply source.

4. A liquid and gas injection system according to claim 3, characterized in that: The liquid injection unit (2) comprises a liquid inlet (21) and a liquid injection port (22), wherein the liquid inlet (21) is connected to the outlet of the liquid storage bottle (11), a small liquid pump (23) is provided at one end of the liquid inlet (21) away from the liquid storage bottle (11), a first solenoid valve (24) is provided between the small liquid pump (23) and the liquid inlet (21), and the small liquid pump (23) is used to extract a vacuum in the liquid storage bottle (11) to facilitate the liquid supply source to inject liquid into the liquid storage bottle (11); A second solenoid valve (25) is provided between the liquid injection port (22) and the liquid inlet (21); an end of the liquid injection port (22) away from the liquid inlet (21) is connected to the anti-recoil device; and a flow meter (26) is provided between the liquid injection port (22) and the anti-recoil device, the flow meter (26) being used to monitor the flow rate entering the anti-recoil device through the liquid injection port (22).

5. A liquid and gas injection system according to claim 4, characterized in that: The gas storage unit (3) comprises a gas storage bottle (31), the inlet of the gas storage bottle (31) is connected to the gas supply source via the gas injection unit (4), and the outlet of the gas storage bottle (31) is also connected to the recoil device via the gas injection unit (4); The outlet of the gas storage bottle (31) is also connected to the inlet of the liquid storage bottle (11), and a stop valve (32) is provided between the outlet of the gas storage bottle (31) and the inlet of the liquid storage bottle (11).

6. A liquid and gas injection system according to claim 5, characterized in that: The gas injection unit (4) comprises a gas inlet (41) and a gas injection port (42); the gas inlet (41) is arranged between the gas storage bottle (31) and a gas supply source, and a third solenoid valve (43) is arranged between the gas inlet (41) and the gas storage bottle (31); The gas injection port (42) is arranged between the gas storage bottle (31) and the anti-recoil device, and a fourth solenoid valve (44) is arranged between the gas injection port (42) and the gas storage bottle (31), and the gas injection port (42) is located between the fifth solenoid valve (52) and the anti-recoil device.

7. A liquid and gas injection system according to claim 6, characterized in that: The third solenoid valve (43) is a three-way solenoid valve, and the other outlet of the third solenoid valve (43) is connected to the gas injection port (42).

8. A liquid and gas injection device, characterized in that: It comprises a liquid storage box (6), a main engine control box (7) and the liquid and gas injection system according to claim 7, wherein the liquid storage bottle (11) is arranged in the liquid storage box (6), and the liquid injection unit (2), the gas storage unit (3), the gas injection unit (4) and the detection unit (5) are all arranged in the main engine control box (7).

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