Resonance eliminating structure of gas one-way valve

Abstract

The invention provides a gas pipeline one-way valve resonance eliminating structure in the field of gas conveying system valves. The gas pipeline one-way valve resonance eliminating structure comprises a one-way valve parent body, a one-way valve child body, an inner sealing ring, a lifting head check block, a lifting head, a gas guide block, an outer sealing ring and a spring. An air guide block and a lifting head check block are arranged in the one-way valve main body and the one-way valve auxiliary body, and a lifting head and a spring are arranged in the air guide block and the lifting head. The lifting head and the lifting head check block jointly form an inner seal, the outer sealing component is located between the lifting head check block and the air guide block, the outer sealing component, the one-way valve son body and the one-way valve mother body jointly form an outer seal, air leakage is prevented, and a plurality of air guide grooves are evenly distributed in the air guide block. Under the action of the air guide block provided with the air guide groove in the one-way valve, airflow stably passes through the one-way valve by changing the displacement of the lifting head when passing through the one-way valve, and the resonance condition is prevented.

Description

Technical Field

[0001] This invention relates to the field of valve technology for gas delivery systems, and more specifically, to a resonance elimination structure for a one-way valve in a gas pipeline system. Background Technology

[0002] Gas check valves are an important component of gas delivery systems, primarily used for pipeline transport of high and low pressure gases. Located between a gas source and gas-consuming equipment, they automatically close and maintain a seal when the carrier gas is changed, due to the pressure difference between the inlet and outlet and the action of a spring. A typical gas check valve consists of a main body, a sub-body, a lifting head, a spring, and seals. The clearance fit between the lifting head and the sub-body provides guidance. Under certain gas flow conditions, the check valve may exhibit resonance, where the lifting head moves under the interaction of the gas flow and the spring, generating a whistling sound and high-frequency unstable gas flow. This can even cause the lifting head to overheat, potentially leading to spontaneous combustion of the gas inside the pipeline, seal failure, and endangering experimental equipment, the laboratory, and the safety of personnel.

[0003] The current solution to the resonance phenomenon of one-way valves is to replace the spring that resonates under the corresponding airflow to change the corresponding resonance frequency and achieve the vibration reduction effect.

[0004] However, the above methods still have problems. For example, it is not easy to replace the spring under real-world conditions. Even if the spring is replaced, the resonance phenomenon cannot be avoided under low pressure and low flow. In addition, the corresponding labor cost increases significantly when the spring is replaced. Summary of the Invention

[0005] To address the shortcomings of existing products, the purpose of this invention is to provide a resonance elimination structure for a gas one-way valve.

[0006] According to the present invention, a gas one-way valve resonance elimination structure includes a one-way valve body, a one-way valve sub-body, a lifting head, a lifting head stop block, a gas guide block, a spring, an inner sealing ring, and an outer sealing ring.

[0007] The one-way valve body and the one-way valve sub-body are equipped with a lifting head, a lifting head stop, a spring, an air guide block, an inner sealing ring, and an outer sealing ring, with the air guide block located between the lifting head and the one-way valve sub-body. The air guide block has evenly distributed strip-shaped air guide grooves around it, and a limiting boss is designed at the air outlet end of the air guide block.

[0008] In some embodiments, the two ends of the air guide groove or the air inlet end are designed as arc-shaped structures.

[0009] In some embodiments, the air inlet end of the air guide groove is designed as a V-shaped structure.

[0010] In some implementations, the limiting boss can be designed as a separate part assembled to the inside of the air guide block.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This invention adds an air guide block structure between the valve core and the valve body of a one-way valve, changing the original airflow from passing through the valve core to an external flow channel, thereby dispersing the airflow between the valve core and the valve body and achieving the purpose of suppressing resonance.

[0013] When different flow rates of gas pass through the check valve, the valve core displacement is different due to the combined action of the spring and the vent hole in the outer flow channel. Furthermore, the initial opening position of the valve core has an arc or V-shaped structure, which allows the gas to pass through the check valve smoothly without resonance.

[0014] Meanwhile, the gas guide block is equipped with a limiting boss, which can suppress excessive displacement of the valve core and make the valve core reach an optimal position. At this time, the gas flow through the check valve is at its maximum, avoiding excessive valve core opening and affecting the normal operation of the check valve, thus ensuring the reliability of the check valve. Attached Figure Description

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Figure 1 This is a cross-sectional schematic diagram of the gas one-way valve resonance elimination structure of the present invention. Figure 2 This is a schematic diagram of the cross-sectional structure of the air guide block.

[0017] Figure label:

[0018] One-way valve body 1

[0019] One-way valve body 2

[0020] Inner sealing ring 3, outer sealing ring 7

[0021] Lifting head stop 4 Lifting head 5

[0022] Air guide block 6, spring 8 Detailed Implementation

[0023] The present invention will now be described in detail with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0024] like Figure 1As shown, this invention includes a one-way valve body 1, a one-way valve sub-body 2, an inner sealing ring 3, a lifting head stop 4, a lifting head 5, an air guide block 6, an outer sealing ring 7, and a spring 8. The lifting head stop 2 and the air guide block 6 are disposed within the one-way valve body 1 and the one-way valve sub-body 2, respectively. The lifting head 5 is disposed within the air guide block 6, and the spring 8 is disposed within the lifting head 5. The inner sealing ring 3 is disposed on the lifting head 5, and the outer sealing ring 7 is located between the one-way valve sub-body 2 and the lifting head stop 4. Air guide grooves are evenly distributed on the air guide block 6, and the inlet of the air guide grooves has a circular or V-shaped structure. The air guide block 6 also has a boss. This invention can be applied to one-way valves used in various fields.

[0025] Working principle

[0026] When airflow passes through the one-way valve, the lifting head 5, together with the air guide groove on the air guide block 6 and the spring 8, forms a variable opening flow channel size according to the required air volume. When a small flow rate passes through the one-way valve, the air inlet end of the air guide groove on the air guide block 6 is arc-shaped or V-shaped, which enables the lifting head 6 to move smoothly. This avoids resonance caused by the sudden changes in the opening channel of a conventional one-way valve. In addition, the air guide block 6 is equipped with a limit boss to prevent excessive displacement of the lifting head 5 due to excessive airflow, thereby improving the overall stability and reliability of the one-way valve.

[0027] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must be It has a specific orientation, is constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application.

[0028] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A resonance elimination structure for a one-way gas valve, characterized in that, It includes a one-way valve body (1), a one-way valve sub-body (2), an inner sealing ring (3), a lifting head stop (4), a lifting head (5), an air guide block (6), an outer sealing ring (7), and a spring (8); The one-way valve body (1) and the one-way valve sub-body (2) are provided with an independent sealing ring (4), a lifting head (5), a lifting head stop (4), a guide block (6), an inner sealing ring (3), and an outer sealing ring (7). The guide ring (6) is located between the lifting head (5) and the sub-body (2), and one end of the lifting head (5) is connected to the inner sealing ring (3). A spring (8) is provided inside the lifting head (5), and a guide channel is provided on the guide block (6).

2. The one-way valve resonance elimination structure according to claim 1, characterized in that, The air guide block (6) is provided with a limiting boss, and the flow guide ring is provided with a flow guide groove.

3. The one-way valve resonance elimination structure according to claim 2, characterized in that, The air guide block (6) has uniformly distributed guide grooves.

4. The one-way valve resonance elimination structure according to claim 3, characterized in that, The guide groove on the air guide block (6) has an arc-shaped structure at both ends, the width of the middle of the guide groove is 2-5mm, and the guide groove has a uniform distribution structure.

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