Water rocket delayed separation device

Abstract

A water rocket delayed separation device comprises an upper connector, the upper connector is connected with a superior 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 subordinate water rocket body, the breather pipe is sleeved with a separation hose, and a one-way air valve is arranged at the lower end of the separation hose. A gas storage pipe is arranged outside the separation hose in a sleeving mode, a gas hole is formed in the lower end of the gas storage pipe, the gas storage pipe plays a role in buffering release of other pressure by arranging the gas storage pipe, the gas hole is formed in the gas storage pipe, and therefore the effect of delayed separation can be started, and control over delayed separation time is also achieved by controlling the hole diameter of the gas hole; the device is simple in structure, light in weight and high in separation success rate.

Description

Technical Field

[0001] The utility model belongs to the field of water rocket launching, in particular to a water rocket delayed separation device. Background Art

[0002] The launch of the water rocket model is powered by water, which is green and environmentally friendly. It can complete launch, air separation and recovery. In primary and secondary education, water rockets have a wide range of applications. The separation technology of water rockets determines the success or failure of the launch process.

[0003] Chinese patent publication number CN113658504A discloses a water rocket pressure-actuated interstage locking-separation device. The separation process requires a locking-separator control rope, and the structure is complex. Another Chinese patent publication number: CN211346560U discloses a separator that can continuously refresh the number of separation stages of a multi-stage water rocket. The separator uses a separator hollow bolt, a separator hose, a separator one-way air guide device, and a separator hard tube to achieve the separation of a multi-stage water rocket. The time control of the delayed separation of the water rocket in the prior art is not ideal, and the structure is complex and the weight is large. Summary of the invention

[0004] The purpose of the utility model is to provide a water rocket delayed separation device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A delayed separation device for a water rocket comprises an upper joint, wherein the upper joint is connected to an upper-stage water rocket body, a vent pipe passes through the upper joint, extends downward and passes through a lower joint, wherein the lower joint is connected to a lower-stage water rocket body, a separation hose is sleeved on the outside of the vent pipe, a one-way air valve is arranged at the lower end of the separation hose, an air storage pipe is sleeved on the outside of the separation hose, and an air hole is provided at the lower end of the air storage pipe.

[0007] As a further solution of the utility model, the upper joint has a thread inside, which is fixedly connected to the rocket body of the upper-stage water rocket by tightening the thread. The top end of the ventilation pipe has an annular convex portion, and the annular convex portion is located above the bottom surface of the upper joint, which is used to limit the ventilation pipe from escaping downward from the upper joint. A sealing edge is also provided above the annular convex portion of the ventilation pipe, and a sealing ring is provided on the sealing edge.

[0008] As a further solution of the utility model, the lower joint has a thread inside, which is fixedly connected to the body of the lower-stage water rocket by tightening the thread, and the separation hose and the air storage pipe are located below the lower joint.

[0009] As a further solution of the utility model, the upper end of the gas storage pipe is provided with a sealing groove, and the sealing portion of the separation hose is placed in the sealing groove to increase the air tightness of the two.

[0010] As a further solution of the utility model, a sealing ring is also provided on the top of the gas storage pipe to increase the air tightness between the device and the lower-stage water rocket body.

[0011] As a further solution of the utility model, the end of the gas storage tube becomes thinner to become a connecting end, and the number of gas storage tubes can be expanded at the connecting end. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the overall structural diagram of the water rocket delayed separation device proposed by the utility model;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the delayed separation device of the water rocket proposed by the utility model;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure decomposition from another angle of the water rocket delayed separation device proposed by the utility model;

[0015] Figure 4 A schematic diagram of a separation hose and an air storage pipe of the water rocket delayed separation device proposed in the utility model;

[0016] Figure 5 A schematic diagram of the structure of the second embodiment of the water rocket delayed separation device proposed by the utility model;

[0017] In the figure: 1. upper joint; 2. lower joint; 3. air storage pipe; 4. separation hose; 5. ventilation pipe; 6. annular convex part; 7. one-way air valve; 8. air hole; 9. sealing part; 10. airtight groove; 11. supplementary air storage pipe; 12. sealing edge; 13. connecting end. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method. Example

[0020] See also Figure 1-Figure 4 In the embodiment of the utility model, the delayed separation device of the water rocket comprises an upper joint 1, wherein the upper joint 1 has a thread, wherein the upper joint 1 is connected to the upper water rocket body through the thread, and a vent pipe 5 extends downward through the upper joint 1 and passes through a lower joint 2, wherein the lower joint 2 has a thread, wherein the lower joint 2 is connected to the lower water rocket body through the thread, and when the water rocket is inflated, the gas enters the upper water rocket body from the lower water rocket body through the vent pipe 5, and a separation hose 4 is sheathed outside the vent pipe 5, wherein a one-way air valve 7 is arranged at the lower end of the separation hose 4, and an air storage pipe 3 is sheathed outside the separation hose 4, wherein an air hole 8 is arranged at the lower end of the air storage pipe 3. The inner diameter of the separation hose 4 is slightly smaller than the outer diameter of the vent pipe 5, and since the separation hose 4 is made of a soft material and has a certain degree of ductility, when the separation hose is sheathed on the vent pipe 5, the two have friction.

[0021] After the water rocket delayed separation device is installed, the separation hose 4 and the air storage pipe 3 are located below the lower joint 2 and in the body of the lower water rocket. During the inflation and pressurization operation, the gas is first charged into the lower water rocket body. When the lower water rocket body has a certain pressure, the gas enters the air storage pipe 3 through the air hole 8. As the pressure in the air storage pipe 3 increases, the pressure of the gas makes the separation hose 4 and the ventilation pipe 5 fit more tightly, so the gas will not escape from between the separation hose 4 and the ventilation pipe 5. When a certain pressure is reached in the air storage pipe 3, the gas can only enter the ventilation pipe 5 through the one-way air valve 7 and then enter the upper water rocket body. After inflation is completed, the pressure of the lower water rocket body, the air storage pipe 3, and the upper water rocket body is balanced.

[0022] The top of the ventilation pipe 5 is provided with an annular convex portion 6, and the annular convex portion 6 is located above the bottom surface of the upper joint 1, and is used to limit the ventilation pipe 5 from escaping downward from the upper joint 1. A sealing edge 12 is also provided above the annular convex portion 6 of the ventilation pipe 5, and the sealing edge 12 is provided with a sealing ring, and the sealing ring is used to increase the air tightness of the ventilation pipe 5 when it contacts with the upper-stage water rocket body.

[0023] like Figure 4As shown, 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 ventilation pipe 5, the gas storage pipe and the separation hose 4 need to maintain good airtightness when in contact. Therefore, an airtight groove 10 is provided on the top of the gas storage pipe 3, and the separation hose 4 has a sealing portion 9 adapted to the airtight groove 10. During assembly, the sealing portion 9 is located in the airtight groove 10 to ensure good airtightness between the two. Example

[0024] like Figure 5 As shown, in the usage scenario where it is necessary to increase the delayed separation time, the number of gas storage pipes 3 can be expanded, and the end of the gas storage pipe 3 becomes thinner than the whole to become a connecting end 13. A supplementary gas storage pipe 11 is added to the connecting end 13. When installing the supplementary gas storage pipe 11, a sealing structure can be provided at the connecting end 13, or the gas storage pipe 3 and the supplementary gas storage pipe 11 can be sealed by a sealing tape. The other structures in this embodiment are the same as those in Example 1 and will not be repeated here.

[0025] The working principle of the water rocket separation process is that after completing the entire water rocket inflation and pressurization process, the launch is started. First, the lower-stage water rocket body loses pressure, and the pressure in the gas storage pipe 3 is greater than that in the lower-stage rocket body. At this time, the gas is released from the gas storage pipe 3 through the air hole 8. The pressure in the gas storage pipe 3 decreases, resulting in a gradual decrease in the pressure on the separation hose 4, and the friction between the separation hose 4 and the ventilation pipe 5 also decreases. When the friction is not enough to counteract the pressure of the upper-stage water rocket body, the separation hose 4 escapes from the ventilation pipe 5 to complete the separation process.

[0026] The separation device of the utility model is provided with an air storage pipe, and air holes are opened on the air storage pipe. The air storage pipe has a buffering effect on the release of pressure, thereby achieving the effect of delayed separation. The delayed separation time can be controlled by controlling the aperture of the air holes. The device has a simple structure, a light weight, and a high separation success rate.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A water rocket delayed separation device, characterized in that: It includes an upper joint, which is connected to the upper-stage water rocket body. The ventilation pipe extends downward through the upper joint and passes through the lower joint. The lower joint is connected to the lower-stage water rocket body. A separation hose is sheathed on the outside of the ventilation pipe. A one-way air valve is provided at the lower end of the separation hose. An air storage pipe is sheathed on the outside of the separation hose. An air hole is opened at the lower end of the air storage pipe.

2. A water rocket delayed separation device according to claim 1, characterized in that: The upper joint has a thread inside, and is fixedly connected to the body of the upper-stage water rocket by tightening the thread. The top end of the ventilation pipe has an annular convex portion, and the annular convex portion is located above the bottom surface of the upper joint, which is used to limit the ventilation pipe from escaping downward from the upper joint. A sealing edge is also provided above the annular convex portion of the ventilation pipe, and a sealing ring is provided on the sealing edge.

3. A water rocket delayed separation device according to claim 1, characterized in that: The lower joint has a thread inside, and is fixedly connected to the body of the lower-stage water rocket by tightening the thread. The separation hose and the air storage pipe are located below the lower joint.

4. A water rocket delayed separation device according to claim 1, characterized in that: The upper end of the gas storage pipe is provided with a sealing groove, and the sealing portion of the separation hose is placed in the sealing groove, thereby increasing the air tightness of the two.

5. A water rocket delayed separation device according to claim 1, characterized in that: A sealing ring is also provided on the top of the gas storage pipe to increase the air tightness between the device and the lower-stage water rocket body.

6. A water rocket delayed separation device according to claim 1, characterized in that: The end of the gas storage pipe becomes thinner to become a connecting end, and the number of gas storage pipes can be expanded at the connecting end.

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