Pressure adjusting mechanism for gas conveying pipeline
By installing pressure regulating valves and pre-pressure regulating devices on oxygen pipelines, and utilizing sensors and motor gear systems, the pre-pressure reduction and coordinated pressure regulation of oxygen pipelines are achieved, solving the problem of excessive pressure caused by oxygen influx and ensuring pipeline safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-28
- Publication Date
- 2026-03-31
AI Technical Summary
Existing pressure regulating devices may cause oxygen to rush into the pipeline under extreme conditions, resulting in excessive pressure and posing a safety hazard.
A pressure regulating valve and a pre-pressure regulating device are installed on the oxygen pipeline. The pressure difference is monitored by the first and second pressure sensors. The controller starts the motor to drive the gear to rotate. The rack pushes the sealing plug down to prevent oxygen from rushing in. The pressure regulating valve works in conjunction with the pressure regulating valve to regulate and pre-depressurize.
It ensures the safety of the oxygen pipeline by preventing a large influx of oxygen through pre-pressure reduction and coordinated pressure regulation, thus maintaining pipeline safety.
Smart Images
Figure CN224065027U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline pressure regulation technology, and in particular to a pressure regulation mechanism for gas transmission pipelines. Background Technology
[0002] Currently, oxygen production requires the use of pipelines to transport oxygen, and pressure regulating devices are used to prevent excessive natural gas pressure in the pipelines from causing damage.
[0003] However, existing gas pressure regulating devices mainly use gas pressure regulating valves to regulate the pressure of pipeline gas. However, in extreme cases, a large amount of oxygen may rush into the pipeline. Since no oxygen pre-pressure reduction device is installed, relying solely on the gas pressure regulating valve to reduce the pressure can lead to excessive pressure in the pipeline, which can easily cause harm.
[0004] To address this issue, a pressure regulating mechanism for gas transmission pipelines is proposed, which has the advantages of coordinated pressure regulation and pre-pressure reduction, thereby solving the problems mentioned in the background technology. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pressure regulating mechanism for gas delivery pipelines.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a gas delivery pipeline pressure regulating mechanism, including an oxygen pipeline, a pressure regulating valve installed on the surface of the oxygen pipeline, and a pre-pressure regulating device connected to the oxygen pipeline in front of the pressure regulating valve; a first pressure sensor installed on the left side of the top surface of the oxygen pipeline, and a second pressure sensor installed on the right side of the top surface of the oxygen pipeline; a sealing shell connected to the top of the pre-pressure regulating device, and a motor fixed to the outer surface of the sealing shell; an insulated gear fixed to the output end of the motor extending into the sealing shell; a sealing plug installed inside the pre-pressure regulating device, and a concave rack fixed to the top of the sealing plug; the top end of the concave rack extending into the sealing shell and meshing with the gear; a flared hole connected to the oxygen pipeline opened on the surface of the sealing plug; a controller fixed to the outer surface of the pre-pressure regulating device, and the output end of the controller electrically connected to the motor; and both the first and second pressure sensors electrically connected to the controller.
[0007] As a further description of the above technical solution: the concave rack has a strip-shaped groove on the side facing the gear, and the strip-shaped groove is provided with a tooth surface that meshes with the gear.
[0008] As a further description of the above technical solution: the top surface of the oxygen pipeline is welded with two installation ports, one of which is located on the far left of the oxygen pipeline and the other is located on the far right of the oxygen pipeline. The probe of the first pressure sensor or the second pressure sensor is inserted into the inside of the installation port, and a rubber sealing ring is provided at the connection between the first pressure sensor or the second pressure sensor and the installation port.
[0009] As a further description of the above technical solution: two limiting blocks are symmetrically installed on the lower inner side of the pre-pressure regulating device, and the two limiting blocks are located directly below the sealing plug.
[0010] As a further description of the above technical solution: the side of the sealing plug is in close contact with the inner wall of the pre-pressure regulating device, and the size of the sealing plug is adapted to the size of the internal space of the pre-pressure regulating device.
[0011] As a further description of the above technical solution: both ends of the pressure regulating valve and the pre-pressure regulating device are equipped with flanges, and the flanges of the pressure regulating valve and the pre-pressure regulating device are of the same size.
[0012] This utility model has the following beneficial effects:
[0013] In this invention, a pressure regulating valve and a pre-pressure regulating device are installed on the oxygen pipeline, with the pre-pressure regulating device located in front of the pressure regulating valve. A first and second pressure sensor installed on the oxygen pipeline monitor the pressure in their respective installation areas in real time. When the pressure difference between the two sensors exceeds a preset value by the controller, the controller activates a motor, causing the motor to drive a gear. Since the top of the sealing plug in the pre-pressure regulating device is equipped with a rack that meshes with the gear, the gear's rotation pushes the sealing plug downwards, causing it to abut against a limiting block until the flared hole on the sealing plug's surface is misaligned with the oxygen supply pipeline channel. This prevents a large influx of oxygen into the pressure regulating valve, achieving pre-pressure reduction during the stage of a large influx of oxygen into the oxygen pipeline. Combined with the pressure regulating valve, this design offers the advantages of coordinated pressure regulation and pre-pressure reduction, thereby maintaining the safety of the oxygen pipeline. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the gas transmission pipeline pressure regulating mechanism of this utility model;
[0015] Figure 2 A schematic diagram of the internal structure of the oxygen pipeline and pre-conditioning device;
[0016] Figure 3 This is a schematic diagram of the sealing plug.
[0017] Legend:
[0018] 1. Oxygen pipeline; 2. Pressure regulating valve; 3. Pre-pressure regulating device; 4. First pressure sensor; 5. Second pressure sensor; 6. Sealing shell; 7. Motor; 8. Controller; 9. Mounting port; 10. Sealing plug; 11. Horn hole; 12. Concave rack; 13. Gear; 14. Limiting block; 15. Strip groove; 16. Tooth surface. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] According to an embodiment of the present invention, a pressure regulating mechanism for a gas delivery pipeline is provided.
[0021] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-3As shown, the gas delivery pipeline pressure regulating mechanism according to an embodiment of the present invention includes an oxygen pipeline 1, a pressure regulating valve 2 installed on the surface of the oxygen pipeline 1, and a pre-pressure regulating device 3 connected to the oxygen pipeline 1 in front of the pressure regulating valve 2. A first pressure sensor 4 is installed on the left side of the top surface of the oxygen pipeline 1, and a second pressure sensor 5 is installed on the right side of the top surface of the oxygen pipeline 1. A sealing shell 6 is connected to the top of the pre-pressure regulating device 3, and a motor 7 is fixed to the outer surface of the sealing shell 6. An insulated gear 13 is fixed to the output end of the motor 7 extending into the sealing shell 6. A sealing plug 10 is installed inside the pre-pressure regulating device 3, and a concave rack 12 is fixed to the top of the sealing plug 10. The top end of the concave rack 12 extends into the sealing shell 6 and meshes with the gear 13. A horn hole 11 connected to the oxygen pipeline 1 is opened on the surface of the sealing plug 10. A controller 8 is fixed to the outer surface of the pre-pressure regulating device 3, and the output end of the controller 8 is electrically connected to the motor 7. Both the pressure sensor 4 and the second pressure sensor 5 are electrically connected to the controller 8. The insulated gear 13 prevents the electric sparks generated at the motor 7 from entering the pre-pressure regulating device 3, resulting in a high safety factor. The sealing shell 6 maintains the sealing of the pre-pressure regulating device 3, preventing the leakage of flammable gas. The control method of this utility model is automatic control through the controller 8. The control circuit of the controller 8 can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail. The controller 8 is a commercially available controller 8, which can be a microcontroller processor, PLC processor, or MCU processor. The principle of the pressure regulating valve 2 is an existing known technology, and there are mature products. Therefore, its principle will not be explained further. This device uses a pneumatic pressure regulating valve 2.
[0022] In one embodiment, the concave rack 12 has a strip-shaped groove 15 on the side facing the gear 13, and the strip-shaped groove 15 is provided with a tooth surface 16 that meshes with the gear 13. By setting the concave rack 12, the opening at the connection between the sealing shell 6 and the pre-pressure regulating device 3 is rectangular, which facilitates the guidance of the concave rack 12 and avoids interference between the exposed tooth surface 16 and the pre-pressure regulating device 3.
[0023] In one embodiment, two mounting ports 9 are welded to the top surface of the oxygen pipeline 1, with one mounting port 9 located on the far left of the oxygen pipeline 1 and the other mounting port 9 located on the far right of the oxygen pipeline 1. The probe of the first pressure sensor 4 or the second pressure sensor 5 is inserted into the inside of the mounting port 9, and a rubber sealing ring is provided at the connection between the first pressure sensor 4 or the second pressure sensor 5 and the mounting port 9. The mounting port 9 facilitates the installation of the first pressure sensor 4 and the second pressure sensor 5.
[0024] In one embodiment, two limiting blocks 14 are symmetrically installed on the lower inner side of the pre-pressure regulating device 3, and the two limiting blocks 14 are located directly below the sealing plug 10. By setting the limiting blocks 14, the sealing plug 10 is limited to prevent excessive downward movement.
[0025] In one embodiment, the side of the sealing plug 10 is tightly fitted to the inner wall of the pre-pressure regulating device 3, and the size of the sealing plug 10 is adapted to the size of the internal space of the pre-pressure regulating device 3. By setting the sealing plug 10, it is easy to reduce the inner diameter of the oxygen pipeline 1, thereby achieving the effect of gas interception and pressure reduction.
[0026] In one embodiment, flanges are installed at both ends of the pressure regulating valve 2 and the pre-pressure regulating device 3, and the flanges of the pressure regulating valve 2 and the pre-pressure regulating device 3 are the same size. The flanges facilitate the installation of the pressure regulating valve 2 and the pre-pressure regulating device 3 and maintain the stability of the connection with the oxygen pipeline 1.
[0027] Working principle:
[0028] In use, the first pressure sensor 4 and the second pressure sensor 5 installed on the oxygen pipeline 1 monitor the pressure in the installation area in real time. When the pressure difference between the two pressure sensors exceeds the preset value of the controller 8, the controller 8 starts the motor 7 to work, causing the motor 7 to drive the gear 13 to rotate. Since the top of the sealing plug 10 in the pre-pressure regulating device 3 is provided with a rack that meshes with the gear 13, as the gear 13 rotates, the rack pushes the sealing plug 10 down to abut against the limit block 14 until the horn hole 11 on the surface of the sealing plug 10 is misaligned with the gas supply pipeline channel, preventing a large amount of oxygen from rushing to the pressure regulating valve 2, thus achieving pre-pressure reduction in the stage of a large amount of oxygen rushing into the oxygen pipeline 1. When the oxygen passes through the pressure regulating valve 2, the pressure regulating valve 2 performs normal pressure reduction on the oxygen passing through, realizing the cooperative pressure regulation and pre-pressure reduction of oxygen in the gas supply pipeline, thereby maintaining the safety of the oxygen pipeline 1.
[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. Pressure regulating mechanism for gas delivery pipes, comprising an oxygen pipe (1), characterized by: The surface of the oxygen pipeline (1) is provided with an air pressure regulating valve (2), and the front of the air pressure regulating valve (2) is provided with a pre-adjusting pressure device (3) connected with the oxygen pipeline (1), a first air pressure sensor (4) is installed on the left side of the top surface of the oxygen pipeline (1), and a second air pressure sensor (5) is installed on the right side of the top surface of the oxygen pipeline (1), a sealed shell (6) is communicated with the top of the pre-adjusting pressure device (3), and a motor (7) is fixed on the outer surface of the sealed shell (6), an insulation type gear (13) is fixed on the output end of the motor (7) extending into the sealed shell (6), a sealing plug (10) is installed in the pre-adjusting pressure device (3), and a concave gear rack (12) is fixed on the top of the sealing plug (10), the top end of the concave gear rack (12) extends into the sealed shell (6) and is meshed with the gear (13), a horn hole (11) is formed in the surface of the sealing plug (10) and is communicated with the oxygen pipeline (1), a controller (8) is fixed on the outer surface of the pre-adjusting pressure device (3), and the output end of the controller (8) is electrically connected with the motor (7), and the first air pressure sensor (4) and the second air pressure sensor (5) are electrically connected with the controller (8).
2. The gas delivery conduit pressure regulating mechanism of claim 1, wherein: One side of the concave gear rack (12) facing the gear (13) is provided with a strip-shaped groove (15), and the strip-shaped groove (15) is provided with a tooth surface (16) meshed with the gear (13).
3. The gas delivery conduit pressure regulating mechanism of claim 1, wherein: Two mounting ports (9) are welded on the top surface of the oxygen pipeline (1), one of the mounting ports (9) is located at the leftmost side of the oxygen pipeline (1), and the other mounting port (9) is located at the rightmost side of the oxygen pipeline (1), the probe of the first air pressure sensor (4) or the second air pressure sensor (5) is inserted into the inside of the mounting port (9), and a rubber sealing ring is arranged at the connection between the first air pressure sensor (4) or the second air pressure sensor (5) and the mounting port (9).
4. The gas delivery conduit pressure regulating mechanism of claim 1, wherein: Two limiting blocks (14) are symmetrically installed on the inner side of the lower part of the pre-adjusting pressure device (3), and the two limiting blocks (14) are directly below the sealing plug (10).
5. The gas delivery conduit pressure regulating mechanism of claim 1, wherein: The side surface of the sealing plug (10) is tightly attached to the inner wall surface of the pre-adjusting pressure device (3), and the size of the sealing plug (10) is adapted to the size of the internal space of the pre-adjusting pressure device (3).
6. The gas delivery conduit pressure regulating mechanism of claim 1, wherein: Flanges are installed at both ends of the air pressure regulating valve (2) and the pre-adjusting pressure device (3), and the flanges of the air pressure regulating valve (2) and the pre-adjusting pressure device (3) are of the same size.