Pipeline pressure regulating device

Abstract

The utility model relates to a pipeline pressure regulating device, which comprises a pressure regulator, a front pipeline and a rear pipeline, the middle part of the pressure regulator is provided with a transversely through pressure regulating channel, two ends of the pressure regulator are respectively provided with an inlet and an outlet, and the front pipeline and the rear pipeline are respectively connected with the inlet and the outlet through bolts. Sealing rings are arranged between the front pipeline and the inlet and between the rear pipeline and the outlet, annular filling and sealing grooves are formed in the end faces where the inlet and the outlet are located, filling and sealing openings leading to the annular filling and sealing grooves are formed in the upper ends of the inlet and the outlet respectively, and the bolts, the annular filling and sealing grooves and the sealing rings are arranged from outside to inside. The sealing structure formed by the polyurethane filler and the sealing ring jointly provide a stable sealing effect, so that the safety of gas supply of the pipeline is guaranteed, and the downstream pressure is ensured to be stable.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, specifically to a pipeline pressure regulating device. Background Technology

[0002] A pipeline pressure regulator is a device that maintains stable downstream pressure. It reduces upstream pressure to a stable downstream pressure and, in the event of a malfunction, should limit the downstream pressure to a safe range. During installation, it is crucial to ensure proper connection and sealing between the regulator and the upstream and downstream pipelines. However, unavoidable errors in measurement, design, and assembly can lead to defects in pipeline connections, resulting in insufficient sealing and safety. This may require auxiliary methods such as welding to compensate for these defects. Furthermore, during earthquakes or when heavy trucks pass near the site, strong vibrations are transmitted to the connected pipelines, potentially causing cracks at the joints or welds where defects were present, thus impacting the operational safety of the site. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a pipeline pressure regulating device. The sealing structure formed by polyurethane filler and the sealing ring together provide a stable sealing effect, ensuring the safety of pipeline gas supply and ensuring stable downstream pressure.

[0004] The technical solution of this utility model is as follows: a pipeline pressure regulating device, including a pressure regulator, a pre-pipeline and a post-pipeline. The pressure regulator has a transversely penetrating pressure regulating channel in the middle, and the two ends of the pressure regulator are the inlet and the outlet, respectively. The pre-pipeline and the post-pipeline are respectively connected to the inlet and the outlet by bolts. Sealing rings are provided between the pre-pipeline and the inlet, and between the post-pipeline and the outlet. The end faces of the inlet and the outlet are provided with annular filling grooves. The upper ends of the inlet and the outlet are provided with filling ports leading to the respective annular filling grooves. The bolts, annular filling grooves, and sealing rings are arranged from the outside to the inside.

[0005] Furthermore, the upper end of the filling port is a countersunk screw hole, in which a sealing screw can be installed.

[0006] Furthermore, both the pre-pipe and the post-pipe are provided with annular flow channels at their end faces. The size of the annular flow channels corresponds to that of the annular filling groove, and the annular flow channels can form a ring-shaped filling flow channel with the annular filling groove.

[0007] Furthermore, the end faces of the pre-pipe, post-pipe, inlet, and outlet are all provided with annular grooves, and the sealing rings are respectively located in the annular grooves between the pre-pipe and the inlet, and between the post-pipe and the outlet.

[0008] Furthermore, the outer surface of the connection between the pre-pipe and the inlet, and the outer surface of the connection between the post-pipe and the outlet, are both provided with an anti-rust coating.

[0009] Compared with the prior art, the advantages of this utility model are as follows: polyurethane filler can be injected into the filling port. After the polyurethane filler enters the annular filling groove, it solidifies and forms a new sealing structure. The sealing structure has good adhesion and low shrinkage rate. It is firmly connected in the annular filling groove and is not easy to detach. It can also resist a certain degree of vibration. When the pressure regulating station is affected by vibration, the sealing structure formed by the polyurethane filler and the sealing ring of this device provide a stable sealing effect, ensuring the safety of pipeline gas supply and ensuring downstream pressure stability. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is an exploded view of the present invention;

[0012] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0013] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0014] Figure 4 This is a diagram showing the combined state of this utility model;

[0015] The components include: 1. Pressure regulator; 2. Pre-pipeline; 3. Post-pipeline; 4. Annular groove; 5. Annular filling groove; 6. Filling port; 7. Countersunk screw hole; 8. Sealing screw; 9. Sealing ring; 10. Rust-proof coating; 11. Annular flow channel. Detailed Implementation

[0016] To further illustrate the technical means and effects of this utility model in achieving its intended purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0017] like Figure 1-4As shown, a pipeline pressure regulating device includes a pressure regulator 1, a pre-pipeline 2, and a post-pipeline 3. The pressure regulator 1 has a transversely penetrating pressure regulating channel in the middle to maintain stable downstream pressure. The two ends of the pressure regulator 1 are the inlet and the outlet, respectively. The pre-pipeline 2 and the post-pipeline 3 are respectively bolted to the inlet and the outlet, respectively. The bolts are arranged in a circumferential array. Sealing rings 9 are provided between the pre-pipeline 2 and the inlet, and between the post-pipeline 3 and the outlet, to provide good sealing for the device. The end faces of the inlet and outlet are each provided with an annular filling groove 5. The upper ends of the inlet and outlet are each provided with a filling port 6 leading to the corresponding annular filling groove 5. After the pre-pipeline 2, the pressure regulator 1, and the post-pipeline 3 are fixedly connected in sequence, polyurethane filler can be injected into the filling port 6. After the filler enters the annular filling groove 5, it solidifies and forms a new sealing structure. Since the polyurethane filler is composed of polyisocyanate and polyol, it has good adhesion and low shrinkage. It is firmly connected in the annular filling groove 5 and is not easy to detach. It can also resist a certain degree of vibration. When the pressure regulating station is affected by vibration, the sealing structure formed by the polyurethane filler and the sealing ring 9 together provide a stable sealing effect, ensuring the safety of pipeline gas supply and ensuring downstream pressure stability. The bolts, annular filling groove 5, and sealing ring 9 are arranged from the outside to the inside. The sealing structure formed by the polyurethane filler in the annular filling groove 5 provides a protective barrier for the inner sealing ring 9, while the circumferential array of bolts on the outer ring can avoid air pressure changes caused by leakage between threads.

[0018] In the above embodiment, the upper end of the filling port 6 is a countersunk screw hole 7, and a sealing screw 8 can be installed in the countersunk screw hole 7. The sealing screw 8 can not only block the filling port 6 to ensure the sealing performance, but also hide in the countersunk screw hole 7 to avoid bumps and improve the aesthetics and safety. Both the pre-pipe 2 and the post-pipe 3 have annular flow channels 11 on their end faces. The annular flow channels 11 correspond to the dimensions of the annular filling groove 5. The annular flow channels 11 and the annular filling groove 5 can form a ring-shaped filling flow channel. On the one hand, the annular flow channels 11 increase the adhesion area of ​​the polyurethane filler, improve the adhesion degree without changing the material shrinkage rate, and further enhance the stability of the sealing structure after it is formed. On the other hand, if the end faces of the pre-pipe 2 and the post-pipe 3 are only flat, a structure similar to a right angle will be formed at their connection. After the polyurethane filler cures at this point, it is easy to detach from the adhesion surface due to shrinkage. However, the use of annular flow channels 11 can reduce dead corners, make the polyurethane filler evenly spread throughout the filling flow channel, and keep the shrinkage of the sealing structure in the filling flow channel uniform and the adhesion stable. The end faces of the pre-pipe 2, post-pipe 3, inlet, and outlet are all provided with annular grooves 4. The sealing rings 9 are located in the annular grooves 4 between the pre-pipe 2 and the inlet, and between the post-pipe 3 and the outlet, respectively. The annular grooves 4 provide positioning for the sealing rings 9 and also provide them with accommodating space. With the bolt connection, the sealing rings 9 can be continuously compressed until the pre-pipe 2 and the inlet end face are engaged, and the post-pipe 3 and the outlet end face are engaged. The elastic recovery effect of the sealing rings 9 provides good sealing performance, and the end face engagement further enhances the sealing degree. The outer surfaces of the connection between the pre-pipe 2 and the inlet, and the outer surfaces of the connection between the post-pipe 3 and the outlet are all provided with anti-rust coatings 10 to fill and cover the tiny gaps at the connection, further improving the sealing performance while providing rust protection for the device.

[0019] Description of the working principle of this utility model:

[0020] Before installation, the pre-pipe 2 or post-pipe 3 must be connected to the pipeline network. Then, the pressure regulator 1 and the other pre-pipe 2 or post-pipe 3 must be connected in sequence. During installation, the pressure regulator 1 must always be kept vertically upward. The pre-pipe 2, sealing ring 9, pressure regulator 1, sealing ring 9, and post-pipe 3 must be connected in sequence with bolts. After confirming that all connections are good, polyurethane filler is poured into the filling port 6 at the front and rear ends of the pressure regulator 1. High-pressure filling can be performed using a pressure booster to ensure that the polyurethane filler fills the filling channel. Then, the sealing screw 8 is locked into the countersunk screw hole 7. Finally, anti-rust paint is applied to the outer surface of the connection between the pre-pipe 2 and the inlet, and the outer surface of the connection between the post-pipe 3 and the outlet. The anti-rust paint covers the sealing screw 8 on the countersunk screw hole 7 and also covers the bolts to ensure comprehensive sealing and anti-rust effect. Due to unavoidable errors in pipeline assembly, the connection between the pre-pipeline 2 and the pressure regulator 1, and between the pressure regulator 1 and the post-pipeline 3, may not be perfect after installation. This defect can be compensated for by the sealing ring 9, and the sealing structure formed by the polyurethane filler provides a safety net, enabling the device to adapt to potential problems caused by assembly errors, ensuring the safe operation of the pressure regulator 1 and the pipeline network, and guaranteeing stable downstream pressure. When an earthquake occurs or a heavy truck passes near the site, strong vibrations are transmitted to the device. Protected by the sealing structure formed by the sealing ring 9 and the polyurethane filler, the device operates stably without being affected, ensuring normal gas supply for residents.

[0021] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pipe pressure regulating device comprising a pressure regulator, a pre-pipe and a post-pipe, characterized by: The middle part of the pressure regulator is a transverse through pressure regulating channel, the two ends of the pressure regulator are an inlet and an outlet respectively, the front pipeline and the rear pipeline are connected to the inlet and the outlet respectively by bolts, the front pipeline and the inlet and the rear pipeline and the outlet are both provided with sealing rings, the end faces where the inlet and the outlet are located are both provided with annular filling grooves, the upper ends of the inlet and the outlet are both provided with filling ports respectively leading to the annular filling grooves where they are located, and the bolts, the annular filling grooves and the sealing rings are arranged from outside to inside.

2. The pipe pressure regulating device of claim 1, wherein: The upper end of the filling port is a countersunk screw hole, and a sealing screw can be arranged in the countersunk screw hole.

3. The pipe pressure regulating device of claim 1, wherein: The end faces of the front pipeline and the rear pipeline are both provided with annular flow channels, the annular flow channels correspond in size to the annular filling grooves, and the annular flow channels and the annular filling grooves can form annular filling flow channels.

4. The pipe pressure regulating device of claim 1, wherein: The end faces of the front pipeline, the rear pipeline, the inlet and the outlet are all provided with annular grooves, and the sealing rings are respectively located in the annular grooves between the front pipeline and the inlet and between the rear pipeline and the outlet.

5. The pipe pressure regulating device of claim 1, wherein: The outer surfaces of the connection parts of the front pipeline and the inlet and the outer surfaces of the connection parts of the rear pipeline and the outlet are both provided with rust-proof coating.

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