Integrated one-way valve for CO2 liquid-gas phase change

Abstract

The utility model relates to an integrated one-way valve for CO2 liquid-gas phase change, which comprises a valve core, a valve sleeve, a spring and a set screw, the valve core is matched and assembled with one end of the valve sleeve in a sliding way through a conical surface, and a sealing ring is arranged on the conical surface of the valve core; a screw mounting cavity which is assembled with a nut of the set screw in a sealing and sleeving manner is formed in the valve sleeve, and the set screw is in threaded connection with the valve element; the spring is mounted between the set screw and the screw mounting cavity; a first center airflow channel is formed in the center of the set screw, a lateral airflow channel communicating with the first center airflow channel and the screw mounting cavity is formed in the side wall of the set screw, and a second center airflow channel is formed in the center of the valve element. A safety valve plate is installed at the butt joint and communication position of the first center air flow channel and the second center air flow channel. The one-way valve integrates the safety function and the one-way function and has the advantages of being small in size and simple in structure.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to an integrated one-way valve for CO2 liquid-gas phase change. Background Technology

[0002] A CO2 liquid-gas phase change power unit seals liquid CO2 in a high-strength container and rapidly activates it through high heat, causing the CO2 to quickly transform from a liquid phase to a gas phase, instantly creating high pressure to generate power. It is currently widely used in metal forming, underground mining, open-pit mining, tunneling, and subway construction, and its application prospects in underwater blasting, vehicle collisions, and military applications are promising. The one-way valve for CO2 liquid-gas phase change is a crucial component of the power unit. Its main function is to control the flow direction of carbon dioxide. During CO2 filling, the one-way valve allows CO2 to flow from the storage tank into the power unit. The one-way valve employs a simple yet effective tooling principle: using the pressure difference of the fluid to achieve unidirectional flow. Under normal circumstances, the one-way valve is closed, preventing the flow of CO2 within the power unit. When filling with CO2, the one-way valve opens, allowing CO2 to enter the power unit.

[0003] Currently, the one-way valves commonly used for CO2 liquid-gas phase change are large in size and take up space, making them unsuitable for integration into small-sized power units; furthermore, they require additional safety valves, resulting in a relatively complex overall structure. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide an integrated one-way valve for CO2 liquid-gas phase change, which integrates safety and one-way function, and has the advantages of small size and simple structure.

[0005] This utility model solves the above problems through the following technical means:

[0006] An integrated one-way valve for CO2 liquid-gas phase change includes a valve core, a valve sleeve, a spring, and a set screw. The valve core is slidably assembled with one end of the valve sleeve via a conical surface, and a sealing ring is installed on the conical surface of the valve core. The valve sleeve has a screw mounting cavity that is fitted into a nut of the set screw for sealing assembly. The set screw is threadedly connected to the valve core. The spring is installed between the set screw and the screw mounting cavity. The set screw has a first central airflow channel at its center, and a lateral airflow channel connecting the first central airflow channel and the screw mounting cavity is opened on the side wall of the set screw. The valve core has a second central airflow channel at its center, and a safety valve plate is installed at the junction of the first central airflow channel and the second central airflow channel.

[0007] Furthermore, the sidewall of the set screw is uniformly provided with multiple lateral airflow channels.

[0008] Furthermore, the valve core has a sealing ring mounting groove on its conical surface.

[0009] Furthermore, the valve sleeve has a tapered hole that matches the tapered surface of the valve core, and the tapered hole communicates with the screw mounting cavity.

[0010] Furthermore, the bottom surface of the set screw nut has a cross groove.

[0011] Furthermore, the sealing ring is an O-ring.

[0012] The beneficial effects of this utility model are:

[0013] This utility model discloses an integrated one-way valve for CO2 liquid-gas phase change, comprising a valve core, a valve sleeve, a spring, and a set screw. The valve core is slidably assembled with one end of the valve sleeve via a conical surface, and a sealing ring is installed on the conical surface of the valve core. The valve sleeve has a screw mounting cavity for sealing assembly with the nut of the set screw, and the set screw is threadedly connected to the valve core. The spring is installed between the set screw and the screw mounting cavity. The set screw has a first central airflow channel at its center, and a lateral airflow channel connecting the first central airflow channel and the screw mounting cavity is formed on its side wall. The valve core has a second central airflow channel at its center, and a safety valve plate is installed at the junction of the first and second central airflow channels. This one-way valve integrates safety and one-way functions, and has the advantages of small size and simple structure. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is an exploded view of a preferred embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional view of a preferred embodiment of the present invention. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present invention will become clearer and more apparent. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "head", and "tail" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] like Figures 1 to 2 As shown, this utility model discloses an integrated one-way valve for CO2 liquid-gas phase change, including a valve core 1, a valve sleeve 4, a spring 5, and a set screw 6. The valve core is slidably assembled with one end of the valve sleeve via a conical surface, and a sealing ring 2 is installed on the conical surface of the valve core. The valve sleeve has a screw mounting cavity that is fitted with the nut of the set screw for sealing assembly, and the set screw is threadedly connected to the valve core. The spring is installed between the set screw and the screw mounting cavity. More specifically, the conical surface of the valve core has a sealing ring mounting groove, and the valve sleeve has a conical hole that matches the conical surface of the valve core, which communicates with the screw mounting cavity. The sealing ring is an O-ring. The bottom surface of the nut of the set screw has a cross groove to facilitate operation of the set screw using tools.

[0021] The set screw has a first central airflow channel 8 at its center, and a lateral airflow channel 7 connecting the first central airflow channel and the screw mounting cavity on its side wall. The valve core has a second central airflow channel 9 at its center, and a safety valve plate 3 is installed at the junction of the first central airflow channel and the second central airflow channel. In this embodiment, the set screw has multiple lateral airflow channels evenly distributed circumferentially on its side wall.

[0022] In use, the valve sleeve is assembled with the power unit. During CO2 filling, CO2 flows out of the storage tank, enters the screw mounting cavity through the first central airflow channel and the side airflow channel, and the air pressure pushes the valve core and the set screw to move down synchronously, while compressing the spring. When the valve core moves down, a gap is formed at the conical mating point, and the airflow enters the power unit through the gap. After filling is completed, the spring pushes the valve core and the set screw to reset, achieving a seal at the conical mating point, keeping the one-way valve in the closed state, and preventing CO2 leakage from the power unit. During CO2 release, the CO2 in the power unit is rapidly excited by high heat, causing the CO2 to rapidly change from the liquid phase to the gas phase and instantly form high pressure. This pressure is sufficient to break through the safety valve plate, causing the CO2 to be ejected through the second central airflow channel and the first central airflow channel to form the power source.

[0023] In summary, the one-way valve of this application integrates safety and one-way function, and has the advantages of small size and simple structure.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An integrated one-way valve for CO2 liquid-gas phase change, characterized in that: The device includes a valve core, a valve sleeve, a spring, and a set screw. The valve core is slidably fitted to one end of the valve sleeve via a conical surface, and a sealing ring is installed on the conical surface of the valve core. The valve sleeve has a screw mounting cavity that is fitted with a nut of the set screw for sealing. The set screw is threadedly connected to the valve core. The spring is installed between the set screw and the screw mounting cavity. The set screw has a first central airflow channel at its center, and a lateral airflow channel connecting the first central airflow channel and the screw mounting cavity is opened on the side wall of the set screw. The valve core has a second central airflow channel at its center, and a safety valve plate is installed at the junction of the first central airflow channel and the second central airflow channel.

2. The integrated one-way valve for CO2 liquid-gas phase change according to claim 1, characterized in that: The set screw has multiple lateral airflow channels evenly distributed around its sidewall.

3. The integrated one-way valve for CO2 liquid-gas phase change according to claim 2, characterized in that: The valve core has a sealing ring mounting groove on its conical surface.

4. The integrated one-way valve for CO2 liquid-gas phase change according to claim 3, characterized in that: The valve sleeve has a tapered hole that matches the tapered surface of the valve core, and the tapered hole communicates with the screw mounting cavity.

5. The integrated one-way valve for CO2 liquid-gas phase change according to claim 4, characterized in that: The bottom surface of the nut of the set screw has a cross groove.

6. The integrated one-way valve for CO2 liquid-gas phase change according to claim 5, characterized in that: The sealing ring is an O-ring.

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