Improved natural gas conveying pipeline

Abstract

The utility model provides an improved natural gas conveying pipeline which comprises a pipeline body, the pipeline body comprises a pipeline, a sampling connecting pipe is integrally arranged on the upper portion of the pipeline body, and a connecting flange plate is integrally arranged at the upper end of the sampling connecting pipe. The sampling barrel assembly comprises a sampling barrel, a sampling valve is arranged in the sampling barrel, and a sensor is fixedly installed on one side of the sampling barrel. Due to the arrangement of the sampling connecting pipe, the connecting flange plate, the sampling barrel, the sampling valve, the sensor, the flange cover, the columnar bulge, the positioning plate and the blocking plug, the strength of a gas pipeline is ensured during sampling, the sealing effect is improved, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission pipelines, and in particular relates to an improved natural gas transmission pipeline. Background Art

[0002] At present, in the natural gas transmission system, a natural gas transmission pipeline is usually used to provide a transmission channel for natural gas. The existing natural gas transmission pipeline includes a main mechanism, a mounting mechanism and an auxiliary mechanism. The mounting mechanism is located at the upper end of the main mechanism, and the auxiliary mechanism is located at the inner end of the main mechanism. The main mechanism includes a natural gas transmission pipeline body, a mounting plate and a sampling box. This natural gas transmission pipeline installs the mounting plate to the natural gas transmission pipeline body by bolts. A gap is easily generated between the natural gas transmission pipeline body and the transmission pipeline. When the bolts are installed, holes are punched in the pipeline, thereby reducing the pipe wall strength of the pipeline. The sealing effect is poor, and the cost of sampling natural gas by a hydraulic cylinder is high. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an improved natural gas transmission pipeline, which ensures the strength of the gas pipeline, improves the sealing effect, and reduces the manufacturing cost through the gas valve.

[0004] The utility model is realized by the following technical solutions:

[0005] An improved natural gas transmission pipeline comprises a pipeline body, the pipeline body comprises a pipeline, a sampling connecting pipe is integrally provided on the upper part of the pipeline body, a connecting flange is integrally provided on the upper end of the sampling connecting pipe, and the invention is characterized in that a sampling barrel assembly is installed on the upper part of the connecting flange, the sampling barrel assembly comprises a sampling barrel, a sampling valve is arranged inside the sampling barrel, a sensor is fixedly installed on one side of the sampling barrel, a flange cover is fixedly installed on the upper part of the sampling barrel, a columnar protrusion is integrally provided on the middle part of the lower side of the flange cover, a positioning plate is integrally provided on the lower part of the columnar protrusion, a stopper is integrally provided on the middle part of the lower side of the positioning plate, and the stopper is interference fit with the upper end of the sampling valve.

[0006] Preferably, an anti-corrosion layer is provided inside the pipeline, and a protective layer is provided outside the pipeline.

[0007] Preferably, the sampling tube is fixedly mounted on the upper part of the connecting flange.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] 1. In the utility model, the arrangement of the sampling connecting pipe, connecting flange, sampling tube, sampling valve, sensor, flange cover, columnar protrusion, positioning plate and stopper ensures the strength of the gas pipeline during sampling, improves the sealing effect and reduces the manufacturing cost.

[0010] 2. In the present invention, the provision of the anti-corrosion layer and the protective layer is beneficial to the anti-corrosion and protection of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 It is a schematic diagram of the structure inside the sampling tube assembly of the utility model.

[0013] In the figure:

[0014] 1. Pipeline body; 11. Anti-corrosion layer; 12. Protective layer; 13. Pipeline; 14. Sampling connecting pipe; 15. Connecting flange; 2. Sampling cylinder assembly; 21. Sampling cylinder; 22. Sampling valve; 23. Sensor; 24. Flange cover; 25. Columnar protrusion; 26. Positioning plate; 27. Stopper. DETAILED DESCRIPTION

[0015] The utility model is described in detail below in conjunction with the accompanying drawings. Figure 1 and attached Figure 2 As shown, an improved natural gas transmission pipeline includes a pipeline body 1, the pipeline body 1 includes a pipeline 13, the interior of the pipeline 13 is provided with an anti-corrosion layer 11, the exterior of the pipeline 13 is provided with a protective layer 12, the upper part of the pipeline body 1 is integrated with a sampling connecting pipe 14, the upper end of the sampling connecting pipe 14 is integrated with a connecting flange 15, and the upper part of the connecting flange 15 is installed with a sampling tube assembly 2.

[0016] In this embodiment, combined with the Figure 2 As shown, the sampling cylinder assembly 2 includes a sampling cylinder 21, a sampling valve 22 is arranged inside the sampling cylinder 21, a sensor 23 is fixedly installed on one side of the sampling cylinder 21, the sensor 23 adopts a gas concentration sensor for natural gas detection, a flange cover 24 is fixedly installed on the upper part of the sampling cylinder 21, a columnar protrusion 25 is integratedly arranged in the middle part of the lower side of the flange cover 24, a positioning plate 26 is integratedly arranged in the lower part of the columnar protrusion 25, a stopper 27 is integratedly arranged in the middle part of the lower side of the positioning plate 26, and the stopper 27 is interference fit with the upper end of the sampling valve 22. In the non-sampling state, the flange cover 24 seals the sampling cylinder 21, the protrusion of the positioning plate 26 is inserted into the mounting hole of the flange at the upper end of the sampling valve 22, and the stopper 27 is inserted into the upper end of the sampling valve 22, thereby improving the sealing effect. When sampling, the flange cover 24 is opened and the external pipeline is connected to the sampling valve 22, and the sampling valve 22 is opened to realize the sampling operation.

[0017] In this embodiment, specifically, the sampling tube 21 is fixedly installed on the upper part of the connecting flange 15 .

[0018] In this embodiment, specifically, the connecting flange 15 has two circles of mounting holes, the outer circle of mounting holes is used to fix the sampling tube 21 , and the inner circle of mounting holes is used to install the sampling valve 22 .

[0019] In this embodiment, specifically, the lower periphery of the positioning plate 26 is integrally provided with protrusions, which are arranged to be aligned with the mounting holes of the flange at the upper end of the sampling valve 22 , and the sampling valve 22 is fixedly installed with the connecting flange 15 .

[0020] How it works

[0021] In the utility model, the anti-corrosion layer 11 and the protective layer 12 protect the pipeline 13, and the sampling connecting pipe 14 and the connecting flange 15 play the role of installing the sampling tube assembly 2, which improves the sealing effect during non-sampling operations and reduces the manufacturing cost.

[0022] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. An improved natural gas transmission pipeline, the improved natural gas transmission pipeline comprising a pipeline body (1), the pipeline body (1) comprising a pipeline (13), a sampling connection pipe (14) being integrally provided on the upper part of the pipeline body (1), a connecting flange (15) being integrally provided on the upper end of the sampling connection pipe (14), It is characterized in that A sampling cylinder assembly (2) is installed on the upper part of the connecting flange (15), and the sampling cylinder assembly (2) includes a sampling cylinder (21), a sampling valve (22) is arranged inside the sampling cylinder (21), a sensor (23) is fixedly installed on one side of the sampling cylinder (21), and the sensor (23) adopts a gas concentration sensor for natural gas detection, a flange cover (24) is fixedly installed on the upper part of the sampling cylinder (21), a columnar protrusion (25) is integrally arranged at the middle part of the lower side of the flange cover (24), a positioning plate (26) is integrally arranged at the lower part of the columnar protrusion (25), a stopper (27) is integrally arranged at the middle part of the lower side of the positioning plate (26), and the stopper (27) is interference fit with the upper end of the sampling valve (22).

2. The improved natural gas transmission pipeline according to claim 1, It is characterized in that The interior of the pipeline (13) is provided with an anti-corrosion layer (11), and the exterior of the pipeline (13) is provided with a protective layer (12).

3. The improved natural gas transmission pipeline according to claim 1, It is characterized in that The sampling tube (21) is fixedly mounted on the upper part of the connecting flange (15).

4. The improved natural gas transmission pipeline according to claim 1, It is characterized in that The connecting flange (15) is provided with two circles of mounting holes, the outer circle of mounting holes is used to fix the sampling tube (21), and the inner circle of mounting holes is used to install the sampling valve (22).

5. The improved natural gas transmission pipeline according to claim 1, It is characterized in that The lower periphery of the positioning plate (26) is integrally provided with a protrusion, and the protrusion is arranged to be aligned with the mounting hole of the flange plate at the upper end of the sampling valve (22).

6. The improved natural gas transmission pipeline according to claim 1, It is characterized in that The sampling valve (22) is fixedly mounted on the connecting flange (15).

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