A one-way pressure relief ball valve

Abstract

This utility model discloses a one-way pressure relief ball valve, including a ball valve body, a connecting pipe, and a one-way valve. Connecting holes are provided on the side walls at both ends of the ball valve body, and one end of the connecting pipe is sealed to the connecting hole. The other end of the connecting pipe is sealed to both ends of the one-way valve. The inlet end of the one-way valve is connected to the outlet end of the ball valve body, and the outlet end of the one-way valve is connected to the inlet end of the ball valve body. This utility model adds a bypass to the original ball valve, with a one-way valve installed in the bypass, allowing only reverse flow in the pipeline. This effectively prevents increased pipeline pressure between the pressure connector and the ball valve, avoiding oil spillage and damage to the ball valve. Shut-off valves are provided on both sides of the one-way valve, allowing for selection of pressure relief functions as needed. Additionally, the shut-off valves facilitate removal of the one-way valve when maintenance or replacement is required.

Description

Technical Field

[0001] This utility model relates to the field of ball valves, and in particular to a one-way pressure relief ball valve. Background Technology

[0002] Aircraft fuel transfer equipment includes pressure fittings, pipelines, and ball valves. The ball valves are connected to the fuel tank. Due to the open-air nature of the fuel pipelines, the temperature fluctuates greatly between day and night or between days. When not in use, the pipeline between the pressure fittings and the ball valves is a closed pipeline. When the temperature rises, the pressure inside the pipeline increases, which may cause oil to splatter or damage the ball valves, resulting in fuel leakage. Utility Model Content

[0003] In view of the above-mentioned defects in the prior art, the main purpose of this utility model is to overcome the shortcomings of the prior art and disclose a one-way pressure relief ball valve, including a ball valve body, a connecting pipe and a one-way valve. The ball valve body has connecting holes on the side walls at both ends. One end of the connecting pipe is sealed to the connecting hole. The other end of the connecting pipe is sealed to both ends of the one-way valve. The inlet end of the one-way valve is connected to the outlet end of the ball valve body, and the outlet end of the one-way valve is connected to the inlet end of the ball valve body.

[0004] Furthermore, it also includes shut-off valves, two of which are provided, and the two ends of the one-way valve are respectively connected to the connecting pipe through the shut-off valves.

[0005] Furthermore, the shut-off valve and the check valve are connected via a double-threaded connector.

[0006] Furthermore, the connecting pipe is connected to the ball valve body via a compression fitting end straight pipe connector.

[0007] Furthermore, the connecting pipe and the one-way valve are made of stainless steel.

[0008] Furthermore, the two connection holes are located on opposite sides of the ball valve body.

[0009] The beneficial effects achieved by this utility model are as follows:

[0010] This invention adds a bypass to the original ball valve, with a one-way valve installed within the bypass. This ensures that the pipeline can only flow in the reverse direction, effectively preventing pressure buildup between the pressure connector and the ball valve, which could cause oil spillage and damage to the ball valve. Shut-off valves are installed on both sides of the one-way valve, allowing for pressure relief as needed. Additionally, the shut-off valves facilitate removal of the one-way valve when it requires maintenance or replacement. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of a one-way pressure relief ball valve according to the present invention;

[0012] Figure 2 for Figure 1 A three-dimensional structural diagram from another perspective;

[0013] The attached figures are labeled as follows:

[0014] 1. Ball valve body; 2. Connecting pipe; 3. Check valve; 4. Gate valve; 5. Double threaded connector; 6. Compression fitting end straight pipe connector. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0016] A one-way pressure relief ball valve, such as Figures 1-2 As shown, the device includes a ball valve body 1, a connecting pipe 2, and a check valve 3. Connection holes are provided on the side walls at both ends of the ball valve body 1. One end of the connecting pipe 2 is sealed to the connection hole; the other end of the connecting pipe 2 is sealed to both ends of the check valve 3. The inlet end of the check valve 3 is connected to the outlet end of the ball valve body 1, and the outlet end of the check valve 3 is connected to the inlet end of the ball valve body 1. By installing the check valve 3 on the check valve, the oil pipeline has a one-way pressure relief function. This effectively prevents excessive pressure in the oil pipeline from causing oil spillage or damage to the ball valve.

[0017] In one embodiment, such as Figures 1-2 As shown, it also includes two shut-off valves 4, with each end of the check valve 3 connected to the connecting pipe 2 via a shut-off valve 4. By using the shut-off valves 4, the opening and closing of the connecting pipe 2 can be controlled; that is, when the shut-off valve 4 is closed, the pressure relief function of the ball valve is disabled; additionally, the check valves can be replaced and maintained. Preferably, the shut-off valves 4 are made of stainless steel.

[0018] In one embodiment, such as Figures 1-2 As shown, the shut-off valve 4 and the check valve 3 are connected by a double-threaded connector 5. The threaded connection facilitates the assembly of the check valve 3.

[0019] In one embodiment, such as Figures 1-2 As shown, the connecting pipe 2 is connected to the ball valve body 1 through the compression fitting end straight pipe joint 6.

[0020] In one embodiment, such as Figures 1-2 As shown, connecting pipe 2 and one-way valve 3 are made of stainless steel.

[0021] In one embodiment, such as Figures 1-2As shown, the two connection holes are located on opposite sides of the ball valve body. This allows the shut-off valve 4 and the check valve 3 to be installed at an angle, providing sufficient space and preventing these components from protruding from the side of the ball valve body 1.

[0022] When using this utility model, such as Figures 1-2 As shown, after the pressure connector is connected to the aircraft, the ball valve is opened to supply fuel to the aircraft. After the fuel supply is completed, the ball valve is closed, and the pressure connector is separated from the aircraft. At this time, if the temperature rises and the pressure increases in the pipeline between the pressure connector and the ball valve, the excess pressure will be released from the one-way valve 3 to the oil sump, effectively preventing oil spillage and damage to the ball valve.

[0023] The above are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Any modifications or equivalent substitutions to the present utility model without departing from the spirit and scope thereof should be covered within the protection scope of the claims of the present utility model.

Claims

1. A one-way pressure relief ball valve characterized by, The device includes a ball valve body, a connecting pipe, and a check valve. The ball valve body has connecting holes on the side walls at both ends. One end of the connecting pipe is sealed to the connecting hole. The other end of the connecting pipe is sealed to both ends of the check valve. The inlet end of the check valve is connected to the outlet end of the ball valve body, and the outlet end of the check valve is connected to the inlet end of the ball valve body.

2. A one-way pressure relief ball valve according to claim 1, wherein It also includes shut-off valves, two of which are provided, and the two ends of the one-way valve are respectively connected to the connecting pipe through the shut-off valves.

3. A one-way pressure relief ball valve according to claim 2, characterized in that, The shut-off valve and the check valve are connected via a double-threaded connector.

4. A one-way pressure relief ball valve according to claim 1, characterized in that, The connecting pipe is connected to the ball valve body via a compression fitting end straight pipe joint.

5. A one-way pressure relief ball valve according to claim 1, characterized in that, The connecting pipe and the one-way valve are made of stainless steel.

6. A one-way pressure relief ball valve according to claim 1, characterized in that, The two connection holes are located on opposite sides of the ball valve body.

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