Safety relief device of CNG long pipe trailer

Abstract

The utility model provides a CNG long pipe trailer safety relief device, and relates to the technical field of CNG long pipe trailer safety relief devices, the CNG long pipe trailer safety relief device comprises a mounting rack, a storage pipe is fixedly mounted in the mounting rack, a discharge pipe is fixedly mounted at one end of the storage pipe, a discharge port is fixedly mounted on the surface of the discharge pipe, and the discharge port is fixedly connected with the storage pipe. According to the utility model, through the precise configuration of the screw rod and the moving sheet, the capability of adapting to different environmental pressures of the equipment is obviously improved, the rotation of the screw rod drives the moving sheet to slide along the discharge pipe, so that the spring is extruded, and the moving pressure of the baffle sheet is increased; according to the mechanism, the equipment can automatically adjust the pressure of the discharge port according to the internal pressure changes of different plateau areas in the transportation process, the stability and safety of gas discharge are ensured, the device is suitable for the environment with large pressure changes, and the practicability and reliability of the equipment are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of CNG long tube trailer safety relief devices, in particular to a CNG long tube trailer safety relief device. Background Art

[0002] The safety relief device of a CNG long tube trailer disclosed in the publication number CN203110926U includes a trailer (1) and a plurality of gas storage cylinders (2) horizontally arranged on the trailer (1). A relief pipe (3) is connected to the mouth of each gas storage cylinder (2). A rupture disc assembly (4) is installed at the flange connection of the head end of the relief pipe (3). A collection box (5) is arranged on the top of the trailer (1). An exhaust port (5a) is opened on the top of the collection box (5). The tail ends of all the relief pipes (3) are connected into the collection box (5). The exhaust port (5a) is offset from the tail end nozzles of the relief pipes (3). This structure can prevent the liquid medium from directly spraying out through the relief pipe when the rupture disc explodes. After the high-pressure liquid medium passes through the collection box, the spraying kinetic energy is greatly attenuated, ensuring that the spraying distance is controlled within a safe range and ensuring that the surrounding environment of the gas filling station is not polluted. Further, a safety valve is installed at the exhaust port position of the collection box, increasing the sealing reliability of the relief pipe and being energy-saving and environment-friendly. In contrast, the traditional safety relief device of a CNG long tube trailer often ignores the pressure changes in special environments such as plateaus. Usually, there is only a fixed relief setting and it cannot be automatically adjusted to adapt to the internal pressure changes. Without a fine control mechanism, this fixed setting not only limits the use range of the equipment, but also may cause safety risks in environments with significant pressure changes such as plateaus. For example, the equipment may release gas too early or too late due to its inability to adapt to the rapid change of the environmental pressure, which not only affects the effective utilization of the gas, but also may cause safety accidents. This deficiency in design may cause inconvenience in operation and potential safety hazards in practical applications and needs to be improved. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the technical problems raised in the above background art.

[0004] The utility model adopts the following technical scheme: a CNG long tube trailer safety relief device, including a mounting rack. A storage pipe is fixedly installed inside the mounting rack. One end of the storage pipe is fixedly installed with a discharge pipe. A discharge port is fixedly installed on the surface of the discharge pipe. One end of the discharge pipe is fixedly installed with a fixing rack. A baffle is slidably connected inside the discharge pipe. A spring is fixedly installed on the side of the baffle. One end of the spring is fixedly installed with a moving piece. One end of the moving piece is rotatably connected with a lead screw. One end of the lead screw is fixedly installed with a turning head. One end of the moving piece is fixedly installed with a scale rod.

[0005] Preferably, the lead screw is threadedly connected to the fixed frame, and the storage pipe is communicated with the discharge port through a discharge pipe. Here, by installing the lead screw at the position of the fixed frame, when the lead screw rotates, the moving piece can be moved to release the internal pressure.

[0006] Preferably, the baffle is arranged on one side of the discharge port, and the moving piece is slidably connected to the discharge pipe. Here, when the internal pressure is too high, the baffle is squeezed, and the baffle moves to the position of the discharge port to discharge the gas.

[0007] Preferably, the scale rod is slidably connected to the fixed frame. Here, through the scale rod, the position where the moving piece moves can be accurately observed.

[0008] Preferably, a protective cover is sleeved on the surface of the discharge port, a connecting rope is fixedly installed on the surface of the protective cover, and a sealing ring is fixedly installed inside the protective cover. Here, the protective cover can protect the position of the discharge port to prevent sundries from entering the inside of the discharge port, and the sealing ring reduces the possibility of small sundries entering.

[0009] Preferably, the sealing ring is arranged at the connection between the protective cover and the discharge port, and one end of the connecting rope is fixedly connected to the mounting frame. Here, the protective cover is fixed by the connecting rope to prevent it from being lost after being removed.

[0010] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0011] 1. In the present utility model, through the precise configuration of the lead screw and the moving piece, the ability of the device to adapt to different environmental pressures is significantly improved. The rotation of the lead screw drives the moving piece to slide along the discharge pipe, thereby squeezing the spring and increasing the moving pressure of the baffle. This mechanism enables the device to automatically adjust the pressure of the discharge port according to the internal pressure changes in different plateau areas encountered during transportation, ensuring the stability and safety of gas discharge, being suitable for environments with large pressure changes, and significantly enhancing the practicality and reliability of the device.

[0012] 2. In the present utility model, the position of the discharge port is protected by the protective cover, the connecting rope, and the sealing ring, reducing the situation that sundries enter the discharge port and cause blockage during transportation to complex or dusty environments, and improving the protection effect of the feed port. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of a CNG long tube trailer safety relief device proposed by the present utility model;

[0014] Figure 2 is an exploded view of a CNG long tube trailer safety relief device proposed by the present utility model;

[0015] Figure 3 The present utility model provides a CNG long tube trailer safety relief device Figure 2 The enlarged view at position A in the figure

[0016] Legend description:

[0017] 1. Mounting frame; 2. Storage pipe; 3. Discharge pipe; 4. Discharge port; 5. Fixed frame; 6. Flap; 7. Spring; 8. Moving piece; 9. Lead screw; 10. Rotating head; 11. Scale rod; 12. Protective cover; 13. Connecting rope; 14. Sealing ring Specific embodiments

[0018] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the following further describes the present utility model with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other

[0019] In the following description, many specific details are set forth to facilitate a thorough understanding of the present utility model. However, the present utility model may be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification

[0020] Embodiment 1

[0021] Please refer to Figures 1-3, the present utility model provides a technical solution: a CNG long tube trailer safety relief device, including a mounting frame 1. Inside the mounting frame 1, a storage pipe 2 is fixedly installed. One end of the storage pipe 2 is fixedly installed with a discharge pipe 3. On the surface of the discharge pipe 3, a discharge port 4 is fixedly installed. One end of the discharge pipe 3 is fixedly installed with a fixing frame 5. Inside the discharge pipe 3, a baffle 6 is slidably connected. On the side of the baffle 6, a spring 7 is fixedly installed. One end of the spring 7 is fixedly installed with a moving piece 8. One end of the moving piece 8 is rotatably connected to a lead screw 9. One end of the lead screw 9 is fixedly installed with a turning head 10. One end of the moving piece 8 is fixedly installed with a scale rod 11. The storage pipe 2 fixedly installed inside the mounting frame 1 is used to store compressed natural gas. The configuration of the discharge pipe 3 ensures the smooth transmission of gas from the storage pipe 2 to the discharge port 4. The fixing frame 5 enhances the stability of the discharge pipe 3. The baffle 6 inside the discharge pipe 3 can be slid and adjusted as needed to control the release of gas, enhancing the flexibility and safety of the device. The lead screw 9 is threadedly connected to the fixing frame 5. The storage pipe 2 and the discharge port 4 are connected through the discharge pipe 3. The threaded connection between the lead screw 9 and the fixing frame 5 enables the rotation of the lead screw 9 to precisely control the position of the moving piece 8, thereby finely adjusting the required pressure for release and the gas discharge speed, achieving more precise control and response. The baffle 6 is arranged on one side of the discharge port 4. The moving piece 8 is slidably connected to the discharge pipe 3. The baffle 6 is located on one side of the discharge port 4 and is slidably connected to the moving piece 8 through the discharge pipe 3. This design enables the baffle 6 to automatically adjust its position according to the change of gas pressure, effectively controlling the gas discharge and ensuring the safety of operation. The scale rod 11 is slidably connected to the fixing frame 5. The slidable connection between the scale rod 11 and the fixing frame 5 allows the operator to intuitively monitor and adjust the position of the moving piece 8, which provides convenience for precisely controlling the discharge mechanism and enhances the user-friendliness and operation accuracy of the device.

[0022] Embodiment 2

[0023] Please refer to Figures 1-3 , a protective cover 12 is sleeved on the surface of the discharge port 4. On the surface of the protective cover 12, a connecting rope 13 is fixedly installed. Inside the protective cover 12, a sealing ring 14 is fixedly installed. The protective cover 12 equipped for the discharge port 4 not only protects the discharge port 4 from the intrusion of external debris, but also enhances the overall sealing performance of the discharge port 4 through the connecting rope 13 and the internal sealing ring 14, avoiding gas leakage and debris intrusion, and improving the safety and reliability of the device. The sealing ring 14 is arranged at the connection between the protective cover 12 and the discharge port 4. One end of the connecting rope 13 is fixedly connected to the mounting frame 1. The sealing ring 14 is located at the connection between the protective cover 12 and the discharge port 4, providing additional sealing protection for the discharge port 4 to prevent gas leakage and external pollution. The fixed connection of the connecting rope 13 not only ensures that the protective cover 12 is not easily lost, but also facilitates the disassembly and installation of the protective cover 12, enhancing the maintenance efficiency of the device.

[0024] Working principle: The device is mainly structurally supported by the mounting bracket 1. The storage pipe 2 is filled with compressed natural gas and is connected to the discharge port 4 through the discharge pipe 3 to achieve the transmission and release of gas. A slidable baffle 6 is provided inside the discharge pipe 3. A spring 7 is installed on the side of the baffle 6, and one end of the spring 7 is connected to the moving piece 8. The moving piece 8 is rotationally connected to the lead screw 9 to achieve precise position adjustment. The other end of the lead screw 9 is provided with a turning head 10. By rotating the lead screw 9, the moving piece 8 slides along the discharge pipe 3, compresses the spring 7 and adjusts the position of the baffle 6, thereby controlling the opening and closing state of the discharge port 4 to cope with internal pressure changes. During transportation, especially when entering areas with large pressure changes such as plateaus, the rotation of the lead screw 9 adjusts the position of the baffle 6 through the moving piece 8, so that the baffle 6 automatically moves towards or away from the discharge port 4 according to the change of internal pressure, adjusting the gas release amount and ensuring the stability and safety of gas discharge. The scale rod 11 is slidably connected to the fixed bracket 5, allowing the operator to accurately observe and control the position of the moving piece 8, further improving the operation accuracy. A protective cover 12 is provided outside the discharge port 4. A connecting rope 13 and a sealing ring 14 are fixed on the protective cover 12. Such a design not only prevents sundries from entering the discharge port 4, but also maintains the sealing performance of the discharge port 4 through the sealing ring 14, reducing the blockage situation that may occur at the discharge port 4 in a complex or dusty environment. The connecting rope 13 ensures that the protective cover 12 will not be lost after being removed, increasing the practicability and reliability of the device.

[0025] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A safety relief device for a CNG long tube trailer, comprising a mounting frame (1), characterized in that: Inside the mounting bracket (1), a storage pipe (2) is fixedly installed. One end of the storage pipe (2) is fixedly installed with a discharge pipe (3). The surface of the discharge pipe (3) is fixedly installed with a discharge port (4). One end of the discharge pipe (3) is fixedly installed with a fixing bracket (5). A shutter (6) is slidably connected inside the discharge pipe (3). A spring (7) is fixedly installed on the side of the shutter (6). One end of the spring (7) is fixedly installed with a moving piece (8). One end of the moving piece (8) is rotatably connected to a lead screw (9). One end of the lead screw (9) is fixedly installed with a turning head (10). One end of the moving piece (8) is fixedly installed with a scale rod (11).

2. The CNG long tube trailer safety relief device according to claim 1, characterized in that: The lead screw (9) is threadedly connected to the fixing bracket (5). The storage pipe (2) and the discharge port (4) are connected and communicated through the discharge pipe (3).

3. The CNG long tube trailer safety relief device according to claim 1, wherein: The shutter (6) is arranged on one side of the discharge port (4). The moving piece (8) is slidably connected to the discharge pipe (3).

4. The CNG long tube trailer safety relief device according to claim 1, wherein: The scale rod (11) is slidably connected to the fixing bracket (5).

5. The CNG long tube trailer safety relief device according to claim 1, characterized in that: A protective cover (12) is sleeved on the surface of the discharge port (4). A connecting rope (13) is fixedly installed on the surface of the protective cover (12). A sealing ring (14) is fixedly installed inside the protective cover (12).

6. The CNG long tube trailer safety relief device according to claim 5, characterized in that: The sealing ring (14) is arranged at the connection between the protective cover (12) and the discharge port (4). One end of the connecting rope (13) is fixedly connected to the mounting bracket (1).

Images