Pressure tapping device for polyethylene gas pipeline

Abstract

The invention is suitable for the technical field of gas pipeline trepanning, and provides a polyethylene gas pipeline pressure trepanning device and a gas pipeline which are used for conveying gas. The auxiliary gas conveying assembly is installed on the gas pipeline and used for assisting the gas pipeline to open the hole under pressure and convey the gas in a non-stop mode; the supporting assembly is used for supporting the polyethylene gas pipeline pressure tapping equipment; according to the supporting assembly, through the arrangement of an auxiliary gas conveying assembly, non-shutdown conveying of gas is achieved during transformation and maintenance of the polyethylene gas pipeline with pressure tapping; through the arrangement of a heat exchanger, a circulating pipeline, a cooling-water machine structure, a storage box and a conveying pump, the tapping position can be cooled while tapping of a gas pipeline is achieved, the situation that gas is ignited due to too high temperature is avoided, meanwhile, a rotating shaft is affected by flowing of a cooling medium, a ventilation fan is driven, and the cooling effect of the rotating shaft is improved. And air flow around the gas pipeline is accelerated, and harm to workers caused by leaked gas during tapping is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of gas pipeline opening, and in particular relates to a pressure opening device for a polyethylene gas pipeline. Background Art

[0002] PE pipes are used in a wide range of fields, among which water pipes and gas pipes are their two largest application markets. PE resin is made by polymerizing the monomer ethylene. Due to different polymerization reaction conditions such as pressure and temperature during polymerization, resins with different densities can be obtained, and thus they are divided into high-density polyethylene, medium-density polyethylene and low-density polyethylene. When processing different types of PE pipes, pressure tapping is a safe, environmentally friendly, economical and efficient in-service pipeline maintenance and repair technology. It is suitable for normal maintenance and modification of pipelines with various media such as water, crude oil, refined oil, chemical media, natural gas, and emergency repairs of emergencies (such as pressure repair, replacement of corroded pipe sections, installation of equipment, distribution and transformation, etc.). Gas pipeline tapping and plugging technology is an operation method for non-stop construction operations on operating pipeline networks and pipelines, which is mainly completed using special tapping equipment for polyethylene pipes.

[0003] Existing polyethylene gas pipelines are mostly repaired and modified to ensure continuous gas transmission through pressurized hole-opening equipment. Since opening the pipeline will generate heat due to friction, the risk of gas combustion increases, affecting the safety of the workers opening the pipeline. In addition, there will be some gas leakage during the opening process, which will also cause harm to the workers. Summary of the Invention

[0004] The purpose of the present invention is to provide a polyethylene gas pipeline pressure opening device, which aims to solve the problem that the existing polyethylene gas pipeline is mostly repaired and modified by pressure opening equipment for continuous gas transmission. Since the opening of the pipeline will generate heat due to friction, the risk of gas combustion is increased, which affects the safety of the workers when opening the pipeline. In addition, there will be a problem of partial gas leakage during the opening, which will also cause harm to the workers.

[0005] The present invention is achieved by providing a polyethylene gas pipeline pressure opening device, comprising: Gas pipeline, used for transporting gas; Auxiliary gas transmission components are installed on the gas pipeline to assist in the uninterrupted gas transmission when the gas pipeline is under pressure. A support assembly for supporting a polyethylene gas pipeline hot tapping device; the support assembly comprises: A hydraulic column is vertically arranged on both sides of the gas pipeline, and a support frame is fixedly installed on the hydraulic column; A heat exchanger is fixedly mounted on the support frame, with circulation pipes fixedly mounted on both the liquid inlet and liquid outlet of the heat exchanger, and the circulation pipes are fixedly connected to the chiller structure, storage tank and delivery pump; A rotating shaft is rotatably engaged with the storage box and is used to accelerate the air flow at the opening of the gas pipeline. The outer wall surface of the rotating shaft is fixedly mounted with thrust blades, and the shaft end of the rotating shaft is fixedly mounted with a ventilation fan. Feed assembly, fixedly mounted on the support frame, is used to control the depth of the gas pipeline opening; The hole-opening assembly is installed on the feed assembly and is used to open a hole in the gas pipeline.

[0006] As a further solution of the present invention, the auxiliary gas delivery assembly includes: Clamps, two sets of clamps are symmetrically fastened on the gas pipeline, and each set of clamps is fixed by fastening bolts; The auxiliary pipeline is fixedly installed on the clamp through the flange structure and is used to open a hole under pressure to transport the gas without shutting down.

[0007] As a further solution of the present invention, the heat exchanger is arc-shaped and is used for heat exchange with the gas pipeline. The heat exchanger, chiller structure, storage tank, delivery pump and circulation pipeline constitute a liquid flow loop.

[0008] As a further solution of the present invention, the number of the thrust blades is four groups, which are used to drive the rotating shaft to rotate.

[0009] As a further solution of the present invention, the feeding assembly includes a feeding cylinder, the feeding cylinder is fixedly mounted on a supporting frame, and the end surface of the output shaft of the feeding cylinder is fixedly connected to a fixing frame.

[0010] As a further solution of the present invention, the hole-punching assembly includes a hole-punching motor, and a hole-punching knife is provided on the output shaft of the hole-punching motor for punching a hole in the gas pipeline.

[0011] The present invention provides a polyethylene gas pipeline pressure opening device, which realizes the non-stop transmission of gas when the polyethylene gas pipeline is pressure opened by setting an auxiliary gas transmission component; through the setting of a heat exchanger, a circulation pipeline, a chiller structure, a storage box, and a delivery pump, it can realize the opening of the gas pipeline while cooling the opening position to avoid the situation where the gas is ignited by excessive temperature; at the same time, the rotating shaft will be affected by the flow of the cooling medium, driving the ventilation fan to accelerate the air flow around the gas pipeline, and avoiding the leakage of gas during the opening to cause harm to the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1A three-dimensional schematic diagram of a pressure tapping device for a polyethylene gas pipeline provided by an embodiment of the present invention; Figure 2 A side structural diagram of a polyethylene gas pipeline hot-drain tapping device provided by an embodiment of the present invention; Figure 3 A top cross-sectional view of a polyethylene gas pipeline pressure tapping device provided in an embodiment of the present invention.

[0013] In the attached figure: 1. gas pipeline; 2. auxiliary gas transmission assembly; 21. clamp; 211. fastening bolt; 22. flange structure; 23. auxiliary pipeline; 3. support assembly; 31. hydraulic column; 32. support frame; 4. heat exchanger; 41. circulation pipeline; 42. chiller structure; 43. storage tank; 44. delivery pump; 5. rotating shaft; 51. thrust blade; 52. ventilation fan; 6. feed assembly; 61. feed cylinder; 62. fixing frame; 7. opening assembly. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0015] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0016] like Figures 1 to 3 As shown, a polyethylene gas pipeline hot-pressed hole opening device provided by one embodiment of the present invention includes: Gas pipeline 1, used for transporting gas; Auxiliary gas transmission component 2, installed on the gas pipeline 1, is used to assist the gas pipeline in pressure tapping to ensure that the gas is not shut down during transmission; Support assembly 3, used to support the polyethylene gas pipeline hot tapping equipment; support assembly 3 includes: The hydraulic columns 31 are vertically arranged on both sides of the gas pipeline 1, and the support frames 32 are fixedly mounted on the hydraulic columns 31; The heat exchanger 4 is fixedly mounted on the support frame 32. The heat exchanger 4 has a circulation pipe 41 fixedly mounted on both the liquid inlet and liquid outlet ends. The circulation pipe 41 is fixedly connected to a chiller structure 42, a storage tank 43 and a delivery pump 44. The rotating shaft 5 is rotatably engaged with the storage box 43 and is used to accelerate the air flow at the opening of the gas pipeline 1. The outer wall of the rotating shaft 5 is fixedly mounted with a thrust blade 51, and the shaft end of the rotating shaft 5 is fixedly mounted with a ventilation fan 52; The feed assembly 6 is fixedly mounted on the support frame 32 and is used to control the depth of the opening of the gas pipeline 1; The hole-opening assembly 7 is installed on the feed assembly 6 and is used to open a hole in the gas pipeline 1.

[0017] In the embodiment of the present invention, in actual application, the auxiliary gas supply component 2 can assist in gas supply to the gas pipeline 1, so that the gas pipeline 1 can be continuously pressure-opened. The hydraulic column 31 is started, and the heat exchanger 4 is attached to the gas pipeline 1 through the support frame 32. Then the feed component 6 controls the position of the opening component 7 to open the gas pipeline 1. At the same time as the gas pipeline 1 is opened, the delivery pump 44 is started to extract the medium in the storage tank 43 and discharge it into the heat exchanger 4. The cooled medium is discharged into the storage tank 43 again through the circulation pipe 41 and the chiller structure 42, thereby achieving a better heat exchange and cooling effect at the opening position of the gas pipeline 1, avoiding the high temperature of the gas pipeline 1 affecting the gas transmission. At the same time, when the cooling medium circulates, it will drive the thrust blades 51 and the ventilation fan 52 through the rotating shaft 5, accelerating the air flow at the opening position of the gas pipeline 1, thereby diluting the leaked gas and avoiding the high concentration of the leaked gas causing harm to the staff.

[0018] By setting up the auxiliary gas transmission component 2, the gas can be delivered without stopping when the polyethylene gas pipeline 1 is opened under pressure; by setting up the heat exchanger 4, the circulation pipeline 41, the chiller structure 42, the storage box 43, and the delivery pump 44, the gas pipeline 1 can be opened while the opening position can be cooled to avoid the situation where the gas is ignited by excessive temperature. At the same time, the rotating shaft 5 will be affected by the flow of the cooling medium, driving the ventilation fan 52 to accelerate the air flow around the gas pipeline 1, avoiding the leakage of gas when opening the hole to cause harm to the staff.

[0019] like Figure 1 As shown, as a further embodiment of the present invention, the auxiliary gas delivery component 2 includes: Clamps 21, two sets of clamps 21 are symmetrically fastened to the gas pipeline 1, and each set of clamps 21 is fixed by fastening bolts 211; The auxiliary pipe 23 is fixedly mounted on the clamp 21 through the flange structure 22 and is used for the non-stop transportation of the gas under pressure; In the embodiment of the present invention, in actual application, the clamp 21 and the auxiliary pipe 23 are provided to achieve auxiliary gas transportation, so that when the gas opening is repaired, the gas transportation will not be affected.

[0020] like Figure 1 and Figure 2 As shown, as a further embodiment of the present invention, the heat exchanger 4 is arc-shaped and is used to fit the gas pipeline 1 for heat exchange. The heat exchanger 4, the chiller structure 42, the storage tank 43, the delivery pump 44 and the circulation pipeline 41 constitute a liquid flow loop; In an embodiment of the present invention, in actual application, the delivery pump 44 extracts the cooling medium inside the storage tank 43, circulates it through the circulation pipe 41, and takes away the heat generated by the opening of the gas pipeline 1 through the heat exchanger 4, thereby controlling the temperature at the opening position of the gas pipeline 1.

[0021] like Figure 3 As shown, as a further embodiment of the present invention, the number of thrust blades 51 is four groups, which are used to drive the rotating shaft 5 to rotate; In the embodiment of the present invention, in actual application, when heat exchange is performed on the gas pipeline 1, the circulating flow of the cooling medium will rotate the rotating shaft 5 and the ventilation fan 52 through the thrust blades 51, thereby accelerating the air flow nearby and diluting the leaked gas.

[0022] like Figure 2 and Figure 3 As shown, as a further embodiment of the present invention, the feed assembly 6 includes a feed cylinder 61, the feed cylinder 61 is fixedly mounted on the support frame 32, and the end surface of the output shaft of the feed cylinder 61 is fixedly connected to a fixing bracket 62; Specifically, as a further embodiment of the present invention, the hole-punching assembly 7 includes a hole-punching motor, and a hole-punching knife is provided on the output shaft of the hole-punching motor for punching a hole in the gas pipeline 1; In the embodiment of the present invention, in actual application, the position of the fixing frame 62 is moved by feeding the air cylinder 61 , thereby controlling the depth of the hole opened in the gas pipeline 1 .

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A polyethylene gas pipeline hot-pressed hole opening device, characterized in that: include; A gas pipeline (1) for transporting gas; An auxiliary gas transmission component (2) is installed on the gas pipeline (1) and is used to assist the gas pipeline in the non-stop transmission of gas with pressure opening; A support assembly (3) is used to support a polyethylene gas pipeline pressure tapping device; the support assembly (3) comprises: A hydraulic column (31) is vertically arranged on both sides of the gas pipeline (1), and a support frame (32) is fixedly mounted on the output shaft of the hydraulic column (31); A heat exchanger (4) is fixedly mounted on a support frame (32), wherein a circulation pipe (41) is fixedly mounted on both a liquid inlet and a liquid outlet of the heat exchanger (4), and a chiller structure (42), a storage tank (43), and a delivery pump (44) are fixedly connected to the circulation pipe (41); A rotating shaft (5) is rotatably engaged with the storage box (43) and is used to accelerate the flow of air at the opening position of the gas pipeline (1). The outer wall surface of the rotating shaft (5) is fixedly mounted with a thrust blade (51), and the shaft end of the rotating shaft (5) is fixedly mounted with a ventilation fan (52); A feed assembly (6) fixedly mounted on the support frame (32) for controlling the depth of the opening of the gas pipeline (1); The hole opening assembly (7) is mounted on the feed assembly (6) and is used to open a hole in the gas pipeline (1).

2. A polyethylene gas pipeline hot-drilling device according to claim 1, characterized in that: The auxiliary gas delivery component (2) comprises: Clamps (21), two groups of clamps (21) are symmetrically fastened to the gas pipeline (1), and each group of clamps (21) is fixed by a fastening bolt (211); The auxiliary pipeline (23) is fixedly mounted on the clamp (21) through the flange structure (22) and is used for opening a hole to transport the gas under pressure without shutting down.

3. A polyethylene gas pipeline hot-drilling device according to claim 1, characterized in that: The heat exchanger (4) is arc-shaped and is used for heat exchange with the gas pipeline (1). The heat exchanger (4), the chiller structure (42), the storage tank (43), the delivery pump (44) and the circulation pipeline (41) constitute a liquid flow loop.

4. A polyethylene gas pipeline hot-pressed hole tapping device according to claim 1, characterized in that: The thrust blades (51) are provided in four groups and are used to drive the rotating shaft (5) to rotate.

5. The polyethylene gas pipeline hot-pressed hole tapping device according to claim 1, characterized in that: The feeding assembly (6) comprises a feeding cylinder (61), the feeding cylinder (61) being fixedly mounted on a supporting frame (32), and the end surface of the output shaft of the feeding cylinder (61) being fixedly connected to a fixing frame (62).

6. A polyethylene gas pipeline hot-pressed hole tapping device according to claim 1, characterized in that: The hole-opening assembly (7) comprises a hole-opening motor, and a hole-opening knife is provided on the output shaft of the hole-opening motor for opening a hole in the gas pipeline (1).

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