Separating device for water rocket

Abstract

A separating device for a water rocket comprises an upper connector, the upper connector is connected with an upper-stage water rocket body, a breather pipe penetrates through the upper connector, extends downwards and penetrates through a lower connector, the lower connector is connected with a lower-stage water rocket body, the breather pipe is sleeved with a separating hose, and a second one-way air valve is arranged at the lower end of the separating hose. The separation hose is sleeved with an air storage pipe, air holes are formed in the pipe wall of the air storage pipe, and a first one-way air valve is arranged at the lower end of the air storage pipe. The gas storage pipe is arranged, the gas holes are formed in the gas storage pipe, the gas storage pipe has a buffering effect on pressure release, so that the effect of delayed separation can be started, and the device is simple in structure, light in weight and high in separation success rate.

Description

Technical Field

[0001] This utility model belongs to the field of water rocket launch, and specifically relates to a separation device for water rockets. Background Technology

[0002] Water rocket models are powered by water, making them environmentally friendly. They can launch, separate in mid-air, and be recovered. Water rockets have significant potential applications in primary and secondary school education. The separation technology of a water rocket determines the success or failure of the launch process.

[0003] Chinese Patent Publication No. CN202421529756.0 discloses a separation device for a water rocket. This patent uses an air hole in the air storage pipe to buffer the release of other pressures, thereby enabling a delayed separation effect. However, the upper stage water rocket is also filled with air through this air hole, which results in a slow filling speed and inconvenience in use. Utility Model Content

[0004] The purpose of this invention is to provide a separation device for water rockets to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A separation device for a water rocket includes an upper connector connected to the upper stage water rocket body, a vent pipe extending downward through the upper connector and passing through a lower connector connected to the lower stage water rocket body, a separation hose sleeved over the vent pipe, a second one-way valve at the lower end of the separation hose, a gas storage pipe sleeved over the separation hose, air holes formed in the wall of the gas storage pipe, and a first one-way valve at the lower end of the gas storage pipe.

[0007] As a further embodiment of this utility model, the separating hose has one or more ribs in the circumferential direction, and the outer circumference of the vent pipe is provided with an anti-slip part.

[0008] As a further embodiment of this utility model, the separating hose has three ribs in the circumferential direction, and the ribs have notches for gas flow.

[0009] As a further embodiment of this utility model, the upper connector has internal threads, which are tightened to fix it to the body of the upper-stage water rocket. The top end of the vent pipe has an annular protrusion located above the bottom surface of the upper connector to prevent the vent pipe from coming off downward from the upper connector. A sealing ring is also provided above the annular protrusion of the vent pipe.

[0010] As a further embodiment of this utility model, the upper end of the gas storage pipe has a sealing groove, and the lower connector has internal threads, which are tightened to fix the connection with the body of the lower-stage water rocket. The separation hose and the gas storage pipe are located below the lower connector.

[0011] As a further embodiment of this invention, a sealing ring is also provided at the top of the gas storage pipe to increase the airtightness between the device and the lower-stage water rocket body.

[0012] As a further embodiment of this utility model, the lower end of the gas storage pipe has a connecting part, the second one-way gas valve is installed on the connecting part, and the nut is fixedly connected to the connecting part. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the separation device for water rockets proposed in this utility model;

[0014] Figure 2 This is an exploded three-dimensional structural diagram of the separation device for water rockets proposed in this utility model.

[0015] Figure 3 This is a cross-sectional view of the separation device for water rockets proposed in this utility model;

[0016] Figure 4 This is a schematic diagram of the separation hose and gas storage pipe of the water rocket separation device proposed in this utility model;

[0017] Figure 5 This is a schematic diagram of the separation hose of the separation device for water rockets proposed in this utility model.

[0018] In the diagram: 1. Upper connector; 2. Lower connector; 3. Air storage pipe; 4. Separation hose; 5. Vent pipe; 6. Ring protrusion; 7. Rib; 8. Air hole; 9. Connecting part; 10. Anti-slip part; 11. First one-way air valve; 12. Second one-way air valve; 13. Sealing part; 14. Airtight groove; 15. Nut. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Furthermore, the elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] Please see Figures 1-4 In this embodiment of the utility model, the water rocket delayed separation device includes an upper connector 1 with internal threads, which is connected to the upper stage water rocket body via the threads. A vent pipe 5 extends downward through the upper connector 1 and passes through a lower connector 2 with threads, which is connected to the lower stage water rocket body via the threads. When the water rocket is inflated, gas enters the upper stage water rocket body from the lower stage water rocket body through the vent pipe 5. A separation hose 4 is sleeved on the outside of the vent pipe 5. A second one-way valve 12 is provided at the lower end of the separation hose 4. A gas storage pipe 3 is sleeved on the outside of the separation hose 4. The wall of the gas storage pipe 3 has air holes 8. The lower end of the gas storage pipe 3 has a connecting part 9 with threads. A first one-way valve 11 is installed on the connecting part 9. A nut 10 is locked to the connecting part 9 via threads. The first one-way valve 11 is fixed inside the connecting part 9 and the nut 10. The inner diameter of the separating hose 4 is slightly smaller than the outer diameter of the vent pipe 5. Since the separating hose 4 is made of a soft material and has a certain degree of extensibility, there is friction between the two when the separating hose 4 is sleeved on the vent pipe 5. When the gas pressure is high, the two are easy to separate during inflation. In order to increase the friction, an anti-slip part 10 is provided on the outer circumference of the vent pipe 5. In this embodiment, the anti-slip part 10 is a spiral convex ring. The separating hose 4 has one or more ribs 7 on the outer circumference of the tube. When the separating hose 4 is squeezed by pressure, the ribs 7 will deform and generate squeezing force on the inner wall of the gas storage pipe 3. Therefore, when the device is pressurized, the separating hose 4, the vent pipe 5 and the gas storage pipe 3 all have forces acting on them, making the whole device more stable and able to withstand greater pressure.

[0022] See Figure 5The ribs 7 on the separation hose 4 compress the inner wall of the gas storage tube 3 to create an airtight seal. However, if the pressure is too high during pressurization, the ribs 7 of the separation hose 4 may fit too tightly against the inner wall of the gas storage tube 3. Therefore, during the water rocket separation process, the gas between the separation hose 4 and the gas storage tube 3 is difficult to release, ultimately leading to separation failure. By creating notches in the ribs 7, the gas is released from the notches. By controlling the size of the notches, the rate of gas release can be controlled. In this embodiment, there are three ribs; creating notches in the latter two ribs ensures smooth gas release. Depending on the specific embodiment, the number and size of the notches can be reasonably set.

[0023] After the separation device for the water rocket is installed, the separation hose 4 and the gas storage pipe 3 are located below the lower connector 2 and within the body of the lower-stage water rocket. During the inflation and pressurization operation, the gas is first injected into the lower-stage water rocket body. When the lower-stage water rocket body has a certain pressure, the gas enters the gas storage pipe 3 through the first one-way valve 11 and the air hole 8. As the pressure in the gas storage pipe 3 increases, the gas pressure makes the separation hose 4 and the vent pipe 5 fit more tightly, so the gas will not escape from between the separation hose 4 and the vent pipe 5. When the pressure in the gas storage pipe 3 reaches a certain level, the gas can only enter the vent pipe 5 through the second one-way valve 12 and then enter the upper-stage water rocket body. After inflation is completed, the pressure of the lower-stage water rocket body, the gas storage pipe 3, and the upper-stage water rocket body reaches equilibrium.

[0024] The gas storage pipe 3 is sleeved on the separation hose 4. During the separation process, the relative positions of the two remain fixed. Since the gas needs to enter the separation hose 4 from the gas storage pipe 3 and then enter the vent pipe 5, the gas storage pipe 3 and the separation hose 4 need to maintain good airtightness when in contact. Therefore, an airtight groove 14 is provided at the top of the gas storage pipe 3. The separation hose 4 has a sealing part 13 that is adapted to the airtight groove 14. During assembly, the sealing part 13 is located in the airtight groove 14 to ensure good airtightness between the two.

[0025] The working principle of the water rocket separation process is as follows: after the entire water rocket inflation and pressurization process is completed, the launch is initiated. First, the lower stage water rocket body loses pressure, and the pressure in the gas storage tube 3 is greater than that in the lower stage rocket body. At this time, the gas is released from the gas storage tube 3 through the vent 8. The decrease in pressure in the gas storage tube 3 causes the pressure on the separation hose 4 to gradually decrease, and the friction between the separation hose 4 and the vent pipe 5 also decreases. When the friction is insufficient to counteract the pressure of the upper stage water rocket body, the separation hose 4 detaches from the vent pipe 5, completing the separation process.

[0026] The separation device of this invention, by setting up a gas storage pipe and opening air holes in the pipe wall, the gas storage pipe has a buffering effect on the release of pressure, thereby achieving the effect of delayed separation. By controlling the diameter of the air holes, the delayed separation time can be controlled. At the same time, by setting a sealing device on the air holes, such as a sealing ring, the release of gas can be slowed down, thereby achieving the control of the delayed separation time. The device has a simple structure, light weight, and high separation success rate.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A separation device for a water rocket, characterized in that, It includes an upper connector that connects to the upper stage water rocket body, a vent pipe that extends downward through the upper connector and through a lower connector that connects to the lower stage water rocket body, a separation hose that is fitted over the vent pipe, a second one-way valve that is installed at the lower end of the separation hose, a gas storage pipe that is fitted over the separation hose, air holes that are opened in the wall of the gas storage pipe, and a first one-way valve that is installed at the lower end of the gas storage pipe.

2. The separation device for a water rocket according to claim 1, characterized in that, The separation hose has one or more ribs in the circumferential direction, and the outer circumference of the vent pipe is provided with an anti-slip part.

3. A separation device for a water rocket according to claim 2, characterized in that, The separation hose has three ribs in the circumferential direction, and the ribs have notches for gas flow.

4. A separation device for a water rocket according to claim 3, characterized in that, The upper connector has internal threads, which are tightened to fix it to the body of the upper-stage water rocket. The top of the vent pipe has an annular protrusion located above the bottom surface of the upper connector to prevent the vent pipe from coming off the upper connector. A sealing ring is also provided above the annular protrusion of the vent pipe.

5. A separation device for a water rocket according to claim 4, characterized in that, The lower connector has internal threads and is fixedly connected to the body of the lower-stage water rocket by tightening the threads. The separation hose and the gas storage pipe are located below the lower connector.

6. A separation device for a water rocket according to claim 1, characterized in that, A sealing ring is also provided at the top of the gas storage pipe to increase the airtightness between the device and the lower stage water rocket body.

7. A separation device for a water rocket according to claim 1, characterized in that, The lower end of the gas storage pipe has a connecting part, and the second one-way gas valve is installed on the connecting part, with the nut fixedly connected to the connecting part.

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