A composite steel pipe for underground gas transportation
By introducing concrete reinforcement layers and longitudinal reinforcement ribs into the composite steel pipe for underground gas conveying, the compressive resistance and stiffness of the pipe body are improved, and a detection tube is installed in the pipe, which facilitates the detection of gas gas, and solves the problems of insufficient compressive resistance and difficult detection in the prior art.
Patent Information
- Application Number
- CN202420852118.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The existing composite steel pipes for underground gas conveying have insufficient compressive resistance and stiffness, and it is difficult to conduct gas gas detection in a convenient and convenient manner.
A composite steel pipe including a composite pipe body, butt sleeve, butt head and detection pipe is designed. The composite pipe body consists of an anti-corrosion layer, a concrete reinforcement layer, an isolation layer, an insulation insulation layer and an alloy steel pipe. The alloy steel pipe is welded with a detection pipe for easy detection.
Through the design of concrete reinforcement layer and longitudinal reinforcement ribs, the strength and compressive resistance of the composite pipe body are significantly improved, and the convenient installation and sealing design of the detection tube make the detection of the well-in-vas gas more practical and effective.
Smart Images
Figure CN222717663U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas transportation, in particular to a composite steel pipe for underground gas transportation. Background Art
[0002] In order to ensure the safety of underground coal mine production, it is necessary to extract the gas in the coal seam and the roadway. my country is the world's largest coal producer, with many large and small coal mines, which require a large number of gas extraction pipelines every year, mostly composite steel pipes.
[0003] The conventional composite steel pipe for underground gas transportation has the following disadvantages: 1. The overall strength and rigidity of the composite pipe body cannot be improved, the compression resistance is poor, and there is no detection tube to facilitate the use of detection probes and detection lines to detect gas in the well. Therefore, those skilled in the art provide a composite steel pipe for underground gas transportation to solve the problems raised in the above background technology. Utility Model Content
[0004] The main purpose of the utility model is to provide a composite steel pipe for underground gas transportation to solve the problems raised in the above-mentioned background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A composite steel pipe for underground gas transportation, comprising a composite pipe body, a butt sleeve, a butt joint and a detection pipe;
[0007] The composite pipe body is composed of an anti-corrosion layer, a concrete reinforcement layer, an isolation layer, a thermal insulation layer and an alloy steel pipe. The outer layer of the alloy steel pipe is provided with a thermal insulation layer, and the outer layer of the thermal insulation layer is coated with an isolation layer. The outer layer of the isolation layer is wrapped with a concrete reinforcement layer. Longitudinal reinforcement ribs are equidistantly arranged in the concrete reinforcement layer, and positioning hoops are welded equidistantly on the outer sides of the longitudinal reinforcement ribs. A positioning plate is welded in the alloy steel pipe, and an installation sleeve is provided in the middle of the positioning plate. A detection tube is provided in the installation sleeve, and an elastic sealing sleeve is provided between the installation sleeve and the detection tube, and the elastic sealing sleeve is specifically made of polyurethane elastomer material.
[0008] As a further solution of the utility model: a butt sleeve and a butt joint are respectively welded at both ends of the composite pipe body, and the inner surface layer of the butt sleeve and the outer surface layer of the butt joint are respectively provided with corresponding internal threads and external threads, and the butt joint of one composite pipe body is connected to the butt sleeve of another composite pipe body through threads to achieve quick connection and fixation.
[0009] As a further solution of the utility model: a silicone rubber sealing ring is bonded to one end of the butt sleeve and at the connection with the composite pipe body.
[0010] As a further solution of the utility model: the thermal insulation layer is specifically a glass fiber coating, and the isolation layer is specifically a polytetrafluoroethylene coating. The thermal insulation layer is specifically a glass fiber coating, so that the composite pipe body is resistant to high temperature and has a significant thermal insulation effect, which plays a role in thermal insulation and improves the stability of gas transportation. The isolation layer is specifically a polytetrafluoroethylene coating, which facilitates the effective isolation of the concrete reinforcement layer and the thermal insulation layer.
[0011] As a further solution of the utility model: through holes are provided on the positioning plate and are located outside the mounting sleeve at equal distances.
[0012] As a further solution of the utility model: the outer surface of the concrete reinforcement layer is sprayed with an anti-corrosion layer, and the anti-corrosion layer is specifically an epoxy ceramic coating.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. The concrete reinforcement layer wrapped around the outside of the alloy steel pipe and the longitudinal reinforcement ribs and positioning hoops in the concrete reinforcement layer greatly improve the overall strength and rigidity of the composite pipe body, with significant compression resistance and not easy to deform or damage.
[0015] 2. The detection tube inside the alloy steel pipe is convenient for installing detection probes and detection lines to detect the gas in the well. It is highly practical and effective. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The utility model is a schematic diagram of the overall structure of a composite steel pipe for underground gas transportation.
[0017] Figure 2 The utility model is a schematic diagram of the composite pipe body material structure of a composite steel pipe for underground gas transportation.
[0018] Figure 3 The utility model is a cross-sectional view of a composite pipe body of a composite steel pipe for underground gas transportation.
[0019] In the figure: 1. composite pipe body; 2. docking sleeve; 3. butt joint; 4. external thread; 5. internal thread; 6. silicone rubber sealing ring; 7. anti-corrosion layer; 8. concrete reinforcement layer; 9. longitudinal reinforcement ribs; 10. positioning hoop; 11. isolation layer; 12. thermal insulation layer; 13. positioning plate; 14. installation sleeve; 15. detection tube; 16. elastic sealing sleeve; 17. through hole; 18. alloy steel pipe. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-3 In the embodiment of the utility model, a composite steel pipe for underground gas transportation includes a composite pipe body 1, a butt sleeve 2, a butt joint 3 and a detection pipe 15;
[0022] The composite pipe body 1 is composed of an anti-corrosion layer 7, a concrete reinforcement layer 8, an isolation layer 11, a thermal insulation layer 12 and an alloy steel pipe 18. The outer layer of the alloy steel pipe 18 is provided with a thermal insulation layer 12 and the outer layer of the thermal insulation layer 12 is coated with an isolation layer 11. The outer layer of the isolation layer 11 is wrapped with a concrete reinforcement layer 8. Longitudinal reinforcement ribs 9 are equidistantly arranged in the concrete reinforcement layer 8 and positioning hoops 10 are welded equidistantly on the outer sides of the longitudinal reinforcement ribs 9. A positioning plate 13 is welded in the alloy steel pipe 18 and an installation sleeve 14 is provided in the middle part of the positioning plate 13. A detection tube 15 is sleeved in the installation sleeve 14, and an elastic sealing sleeve 16 is sleeved between the installation sleeve 14 and the detection tube 15, and the elastic sealing sleeve 16 is specifically made of a polyurethane elastomer material.
[0023] Among them, a docking sleeve 2 and a docking joint 3 are welded at both ends of the composite pipe body 1, and the inner surface of the docking sleeve 2 and the outer surface of the docking joint 3 are respectively provided with corresponding internal threads 5 and external threads 4; the docking joint 3 of one composite pipe body 1 is connected to the docking sleeve 2 of another composite pipe body 1 through threads to achieve quick connection and fixation.
[0024] Among them, a silicone rubber sealing ring 6 is bonded to one end of the butt joint sleeve 2 and the connection with the composite pipe body 1; the silicone rubber sealing ring 6 is used to improve the sealing effect of the butt joint to prevent gas leakage.
[0025] Among them, the thermal insulation layer 12 is specifically a glass fiber coating, and the isolation layer 11 is specifically a polytetrafluoroethylene coating; the thermal insulation layer 12 is specifically a glass fiber coating, so that the composite pipe body 1 is resistant to high temperature and has a significant thermal insulation effect, which plays a role in thermal insulation and improves the stability of gas transportation; the isolation layer 11 is specifically a polytetrafluoroethylene coating, which facilitates the effective isolation of the concrete reinforcement layer 8 and the thermal insulation layer 12.
[0026] Among them, through holes 17 are opened on the positioning plate 13 and are located outside the installation sleeve 14 at equal distances; the through holes 17 on the positioning plate 13 are used to facilitate gas transportation.
[0027] Among them, the outer surface of the concrete reinforcement layer 8 is sprayed with an anti-corrosion layer 7, and the anti-corrosion layer 7 is specifically an epoxy ceramic coating; it greatly improves the corrosion resistance and resistance to friction damage of the composite pipe body 1, and greatly increases the service life of the composite pipe body 1 underground.
[0028] The working principle of the utility model is: the butt joint 3 of a composite pipe body 1 is connected to the butt sleeve 2 of another composite pipe body 1 through a thread to achieve quick connection and fixation, the silicone rubber sealing ring 6 is used to improve the sealing effect of the butt joint to prevent gas leakage, the concrete reinforcement layer 8 wrapped on the outside of the alloy steel pipe 18 and the longitudinal reinforcement ribs 9 and the positioning hoop 10 in the concrete reinforcement layer 8 are used to greatly improve the overall strength and rigidity of the composite pipe body 1, the compression effect is significant, and it is not easy to deform and damage, the detection tube 15 in the alloy steel pipe 18 is used to facilitate the use of the detection probe and the detection line to detect the gas in the well, the practicability is strong, the effect is significant, the heat insulation layer 12 is specifically a glass fiber coating, so that the composite pipe body 1 is resistant to high temperature and has significant heat insulation effect. It has the effect of heat insulation and heat preservation, and improves the stability of gas transportation. The isolation layer 11 is specifically a polytetrafluoroethylene coating, which is convenient for effectively isolating the concrete reinforcement layer 8 and the heat insulation layer 12 to avoid moisture infiltration and protect the alloy steel pipe 18. The anti-corrosion layer 7 is specifically an epoxy ceramic coating, which greatly improves the corrosion resistance and friction damage resistance of the composite pipe body 1, so that the service life of the composite pipe body 1 in the well can be greatly improved. The composite steel pipe for underground gas transportation greatly improves the overall strength and rigidity of the composite pipe body 1, and has significant pressure resistance. The detection tube 15 in the alloy steel pipe 18 is convenient for the insertion of detection probes and detection lines to detect gas in the well.
[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A composite steel pipe for underground gas transportation, comprising a composite pipe body (1), a butt sleeve (2), a butt joint (3) and a detection pipe (15); It is characterized by: The composite pipe body (1) is composed of an anti-corrosion layer (7), a concrete reinforcement layer (8), an isolation layer (11), a heat insulation layer (12) and an alloy steel pipe (18); the outer surface of the alloy steel pipe (18) is provided with a heat insulation layer (12), and the outer surface of the heat insulation layer (12) is coated with an isolation layer (11); the outer surface of the isolation layer (11) is wrapped with a concrete reinforcement layer (8); longitudinal reinforcing ribs (9) are arranged at equal distances in the concrete reinforcement layer (8), and positioning hoops (10) are welded at equal distances on the outer sides of the longitudinal reinforcing ribs (9); a positioning plate (13) is welded in the alloy steel pipe (18), and a mounting sleeve (14) is arranged in the middle of the positioning plate (13); a detection tube (15) is sleeved in the mounting sleeve (14), and an elastic sealing sleeve (16) is sleeved between the mounting sleeve (14) and the detection tube (15), and the elastic sealing sleeve (16) is specifically made of a polyurethane elastomer material.
2. The composite steel pipe for underground gas transportation according to claim 1, characterized in that: A butt sleeve (2) and a butt joint (3) are respectively welded at both ends of the composite pipe body (1); the inner surface layer of the butt sleeve (2) and the outer surface layer of the butt joint (3) are respectively provided with corresponding internal threads (5) and external threads (4).
3. The composite steel pipe for underground gas transportation according to claim 1, characterized in that: A silicone rubber sealing ring (6) is bonded to one end of the butt joint sleeve (2) and at the connection with the composite pipe body (1).
4. The composite steel pipe for underground gas transportation according to claim 1, characterized in that: The heat-insulating layer (12) is specifically a glass fiber coating, and the isolation layer (11) is specifically a polytetrafluoroethylene coating.
5. The composite steel pipe for underground gas transportation according to claim 1, characterized in that: Through holes (17) are provided on the positioning plate (13) and are located outside the mounting sleeve (14) at equal distances.
6. The composite steel pipe for underground gas transportation according to claim 1, characterized in that: The outer surface of the concrete reinforcement layer (8) is sprayed with an anti-corrosion layer (7), and the anti-corrosion layer (7) is specifically an epoxy ceramic coating.