Mechanical transmission structure of high-pressure blow-off valve

Abstract

The utility model relates to a mechanical transmission structure of a high-pressure blow-off valve, which is used for the high-pressure blow-off valve, the high-pressure blow-off valve forms a pressure-bearing shell by a valve body and a housing, a driving component and a balanced stop valve are arranged in the pressure-bearing shell, and the driving component is connected with the balanced stop valve to form an integrated structure. The valve body and the housing are connected through a fastener and sealed through a sealing ring, and external seawater pressure can be borne. According to the mechanical transmission structure of the high-pressure blow-off valve, an integrated structure is adopted, and the main valve, the motor and the transmission part are integrated together. The valve adopts the housing to isolate outside seawater, and the D-shaped sealing ring is arranged between the housing and the valve body, so that the contact area is larger, and high pressure can be easily borne. The blow-off valve is used for reducing transient radiation noise under the condition of high pressure difference.

Description

Technical Field

[0001] The utility model relates to the technical field of a high-pressure blow-off valve, in particular to a mechanical transmission structure of a high-pressure blow-off valve. Background Art

[0002] Underwater vehicles collect sewage through pressure vessels, and the sewage in them needs to be blown out regularly. During the blowing, the sewage is pressed out by injecting compressed air into the pressure vessel. In order to ensure that blowing can be performed at all depths, the compressed air used by the vehicle is generally much higher than the external seawater pressure during the actual blowing. The existing stop valve cannot adjust the blowing air supply pressure according to the needs of blowing. When compressed air is discharged under a higher pressure difference, high-pressure blowing will generate flow-induced structural noise and jet noise. Due to the fast blowing rate and the short blowing time, more compressed air will be discharged after the container is blown empty, forming cavitation, resulting in large underwater transient radiation noise. Therefore, it is very necessary to study a blowing valve that can reduce transient radiation noise under high pressure difference conditions. Summary of the invention

[0003] The utility model is to provide a high-pressure blow-off valve mechanical transmission structure, which is used for the blow-off valve which can reduce transient radiation noise under high pressure difference conditions.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a high-pressure blow-off valve mechanical transmission structure, which is used for the high-pressure blow-off valve. The high-pressure blow-off valve is composed of a valve body and a cover shell to form a pressure-bearing shell. A drive assembly and a balanced stop valve are installed inside the pressure-bearing shell. The drive assembly is connected to the balanced stop valve to form an integrated structure.

[0005] Furthermore, the valve body and the cover are connected by fasteners and sealed by a sealing ring, and can withstand external seawater pressure.

[0006] Furthermore, the drive assembly consists of a motor, a reduction mechanism, a travel switch and a drive mechanism. The motor is connected to the drive mechanism through the reduction mechanism. The nut in the drive mechanism rotates while connecting to the trapezoidal thread on the upper end of the valve stem of the balanced stop valve.

[0007] Furthermore, the balanced stop valve is composed of a valve seat, a valve sleeve, a piston, and a valve stem. The valve seat is installed in the valve body. The piston and the valve stem are connected to the valve seat through the valve sleeve, and the upper end of the valve stem is connected to the drive assembly.

[0008] Furthermore, a guide seat is provided on the top of the valve seat, and the guide seat is cooperatively connected with the valve stem.

[0009] Furthermore, an O-ring is provided between the valve seat and the valve body.

[0010] Furthermore, when the medium enters the valve body from the inlet end, it enters the upper end of the valve stem through the balancing hole at the lower end of the valve stem of the balanced stop valve to generate a downward force, so that the combined force direction of the upper and lower ends of the valve stem is downward, further increasing the seal between the valve stem and the valve seat.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The mechanical transmission structure of the high-pressure blow-off valve of the utility model adopts an integrated structure, integrating the main valve, motor and transmission components. The valve uses a cover to isolate the external seawater, and a D-shaped sealing ring is used between the cover and the valve body, which has a larger contact area and is easy to withstand high pressure. It is used for a blow-off valve that can reduce transient radiation noise under high pressure difference conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a main part view of the mechanical transmission structure of the high-pressure blow-off valve of the utility model;

[0014] Figure 2 for Figure 1 Left view of

[0015] In the figure: 1. valve body, 2. valve seat, 3. valve stem, 4. valve sleeve, 5. piston, 6. O-ring, 7. fastener, 8. sealing ring, 9. guide seat, 10. drive assembly, 11. cover, 12. electrical connector. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0017] like Figure 1 , as shown in FIG2 , a high-pressure blow-off valve mechanical transmission structure provided by an embodiment of the utility model is used for a high-pressure blow-off valve. The high-pressure blow-off valve is composed of a valve body 1 and a cover shell 11 to form a pressure-bearing shell, and a drive assembly 10 and a balanced stop valve are installed inside the pressure-bearing shell. The drive assembly 10 is connected to the balanced stop valve to form an integrated structure.

[0018] The valve body 1 and the housing 11 are connected by fasteners 7 and sealed by a sealing ring 8 to withstand the external seawater pressure. An electrical connector 12 is provided on the housing 11.

[0019] The driving assembly 10 is mainly composed of a motor, a speed reduction mechanism, a travel switch and a driving mechanism. The motor is connected to the driving mechanism through the speed reduction mechanism. The nut in the driving mechanism rotates while connecting the trapezoidal thread on the upper end of the valve stem of the balanced stop valve.

[0020] The balanced stop valve is composed of a valve seat 2, a valve sleeve 4, a piston 5, and a valve stem 3. The valve seat 2 is installed in the valve body 1, and an O-ring 6 is provided between the valve seat 2 and the valve body 1. The piston 5 and the valve stem 3 are connected in the valve seat 2 through the valve sleeve 4, the upper end of the valve stem 3 is connected to the drive assembly 10, and a guide seat 9 is provided on the top of the valve seat 2, and the guide seat 9 is connected with the valve stem 3 in cooperation.

[0021] When the medium enters the valve body 1 from the inlet end, it enters the upper end of the valve stem 3 through the balancing hole at the lower end of the valve stem 3 to generate a downward force. Finally, the combined force of the medium acting on the upper and lower ends of the valve stem 3 is directed downward, which is beneficial to the sealing between the valve stem 3 and the valve seat 2.

[0022] When the high-pressure blow-off valve is energized, the motor rotates, driving the nut in the driving mechanism to rotate through the reduction mechanism. The nut drives the trapezoidal thread on the upper end of the valve stem 3 to rotate, causing the valve stem 3 to rise or fall, thereby prompting the stop valve to open or close.

[0023] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A mechanical transmission structure for a high-pressure blow-off valve, used for a high-pressure blow-off valve, characterized in that: The high-pressure blow-off valve is composed of a valve body and a cover shell to form a pressure-bearing shell. A drive assembly and a balanced stop valve are installed inside the pressure-bearing shell. The drive assembly is connected to the balanced stop valve to form an integrated structure.

2. The mechanical transmission structure of the high-pressure blow-off valve according to claim 1 is characterized in that: The valve body and the housing are connected by fasteners and sealed by a sealing ring, which can withstand external seawater pressure.

3. The mechanical transmission structure of the high-pressure blow-off valve according to claim 1 is characterized in that: The driving assembly consists of a motor, a reduction mechanism, a travel switch and a driving mechanism. The motor is connected to the driving mechanism through the reduction mechanism. The nut in the driving mechanism rotates while connecting to the trapezoidal thread on the upper end of the valve stem of the balanced stop valve.

4. The mechanical transmission structure of the high-pressure blow-off valve according to claim 1 is characterized in that: The balanced stop valve consists of a valve seat, a valve sleeve, a piston and a valve stem. The valve seat is installed in the valve body. The valve seat is connected to the piston and the valve stem through the valve sleeve, and the upper end of the valve stem is connected to the drive assembly.

5. The mechanical transmission structure of the high-pressure blow-off valve according to claim 4 is characterized in that: A guide seat is provided on the top of the valve seat, and the guide seat is connected with the valve stem.

6. The mechanical transmission structure of the high-pressure blow-off valve according to claim 4 is characterized in that: An O-ring is provided between the valve seat and the valve body.

7. The mechanical transmission structure of the high-pressure blow-off valve according to claim 1 is characterized in that: When the medium enters the valve body from the inlet end, it enters the upper end of the valve stem through the balancing hole at the lower end of the valve stem of the balanced stop valve to generate a downward force, so that the combined force direction of the upper and lower ends of the valve stem is downward, further increasing the seal between the valve stem and the valve seat.

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