Portable gas pipeline deicing device
By setting up a portable heating module on the periphery of the high-pressure natural gas conveying pipeline, the combination of metal materials with excellent thermal conductivity and plastic materials with low thermal conductivity is achieved, and the problem of icing and blockage in the conveying pipeline is solved.
Patent Information
- Application Number
- CN202422170771.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-05
AI Technical Summary
The accumulation of water in high-pressure natural gas transmission pipelines can easily lead to blockage, and the existing ice-filled methods are inefficient and have safety hazards.
A portable gas pipeline ice-removing device is designed, two semi-cylindrical heating module sleeves are arranged on the periphery of the conveying pipeline, and an integrated first and second heating zones are set up. The combination of metal materials with excellent thermal conductivity and plastic materials with low thermal conductivity is achieved to achieve uniform and efficient ice-removing.
The heating module is simple in structure, efficient in disassembly and assembly, and high in heat conduction efficiency, avoids pipeline stress damage and recondensation and blockage caused by local temperature differences, and reduces energy consumption and safety hazards.
Smart Images
Figure CN223063449U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-pressure natural gas transmission pipelines, in particular to a portable gas pipeline ice melting device. Background Art
[0002] Liquefied Natural Gas (LNG) is recognized as the cleanest fossil energy on earth. The manufacturing process of liquefied natural gas involves the purification of natural gas, including the removal of impurities such as carbon dioxide, sulfides, hydrocarbons, and water, and then cooling the gaseous natural gas under normal pressure to -162 °C to condense it into a liquid state. The volume of liquefied natural gas is about 1 / 625 of the volume of the same amount of gaseous natural gas. Therefore, cryogenic atmospheric pressure liquefaction of natural gas can greatly save storage and transportation space, and the liquefied natural gas can be regasified during use.
[0003] Although the manufacturing process of liquefied natural gas includes purification treatment, there are still inevitably a small amount of water vapor, carbon dioxide, nitrogen, etc. doped in the finished natural gas. These impurity components will have an adverse impact on the subsequent production and transportation of natural gas. Taking water vapor as an example, since the density of water is greater than that of natural gas, more water is likely to accumulate at the horizontal low points and the bottoms of vertical channels of high-pressure natural gas transmission pipelines in natural gas stations during long-term use. When the external temperature drops below 0 °C in winter, or at the throttling part of the high-pressure natural gas transmission pipeline, a small amount of water in the high-pressure natural gas transmission pipeline will turn into ice crystals. And at the positions where water is likely to accumulate, such as the horizontal low points in the high-pressure natural gas transmission pipeline, ice blocks will directly form, which directly causes the blockage of the natural gas transmission pipeline.
[0004] When the blockage position in the transmission pipeline is found, on-site workers often adopt the method of pouring hot water on the blockage position of the transmission pipeline to melt the ice inside the transmission pipeline. Although this ice melting method can be used for emergency, due to the cold external environment, the temperature of the hot water drops rapidly during the pouring process, a large amount of heat is lost, and a large amount of hot water is consumed. Moreover, the hot water freezes on the ground after flowing down from the transmission pipeline, posing a safety hazard to passing personnel. Therefore, it is necessary to design a safe and efficient ice melting device to solve the problem of blockage caused by water accumulation and icing in high-pressure natural gas transmission pipelines. Summary of the Utility Model
[0005] Aiming at the problems existing in the prior art: the accumulated water in the high-pressure natural gas transmission pipeline freezes easily when the external temperature drops, which easily leads to pipeline blockage. The purpose of the utility model is to provide a portable gas pipeline ice melting device, which is provided with a segmented heating and easily disassembled and assembled heating module at the icing position of the transmission pipeline, and has the advantages of simple structure, uniform heating, high disassembly and assembly efficiency, etc., and effectively solves the problem of pipeline icing blockage.
[0006] To achieve the above object, the technical solution of the present utility model is as follows:
[0007] A portable gas pipeline de-icing device is formed by splicing two semi-cylindrical heating modules. The cylindrical structure formed by the two heating modules is sleeved around the conveying pipeline and closely adheres to the conveying pipeline. Each heating module is provided with a heating pipe capable of generating heat. The heating module includes a first heating area and a second heating area integrally arranged. The first heating area faces the icing position on the conveying pipeline, and the two second heating areas are respectively arranged at both ends of the first heating area. The density of the heating pipes in the first heating area is greater than that in the second heating area.
[0008] The present utility model is further provided that: the heating module includes a heat-conducting sleeve and an isolation sleeve. The heat-conducting sleeve closely adheres to the conveying pipeline. The isolation sleeve is connected to the end of the heat-conducting sleeve to form a cavity for accommodating the heating pipe, and the heating pipes are fixedly distributed around the heat-conducting sleeve.
[0009] The present utility model is further provided that: the heat-conducting sleeve is made of a metal material.
[0010] The present utility model is further provided that: the isolation sleeve is made of a polyethylene material.
[0011] The present utility model is further provided that: a first temperature sensor for detecting the temperature of the first heating area and a second temperature sensor for detecting the temperature of the second heating area are arranged in the cavity formed by the isolation sleeve and the heat-conducting sleeve.
[0012] The present utility model is further provided that: the density of the heating pipes in the first heating area is twice that in the second heating area.
[0013] The present utility model is further provided that: the maximum temperature heated by the second heating area is 30 degrees Celsius, and the maximum temperature heated by the first heating area is 50 degrees Celsius.
[0014] The present utility model is further provided that: first connection parts fixedly connected to the heating modules are arranged at opposite ends of the two heating modules. Hinges are installed on the first connection parts, and the two heating modules can rotate around the axis of the hinge.
[0015] The present utility model is further provided that: it further includes a lock. Second connection parts fixedly connected to the heating modules are arranged at opposite ends of the two heating modules. A fixing column is respectively arranged on each of the second connection parts of the two heating modules, and the positions of the fixing columns on the two second connection parts correspond to each other. The lock locks the two fixing columns.
[0016] The present utility model is further configured such that: a first connector is provided at the end of the heat conduction sleeve, a second connector is provided at the end of the isolation sleeve, and the first connector and the second connector are engaged with each other.
[0017] In summary, the beneficial effects achieved by the present utility model are as follows:
[0018] (1) One ends of two semi-cylindrical heating modules are hinged through hinges, and the other ends are movably connected through fixed columns and latches. Therefore, during on-site operation, the two heating modules can be conveniently and efficiently spliced and installed at the ice-covered position on the conveying pipeline;
[0019] (2) The heat conduction sleeve of the heating module closely attached to the conveying pipeline is made of a metal material with a high thermal conductivity coefficient and excellent heat conduction performance. Therefore, when the heating tube in the heating module generates heat, the heat can be quickly conducted to the conveying pipeline to melt the ice in the conveying pipeline;
[0020] (3) The isolation sleeve of the heating module away from the conveying pipeline is made of polyethylene material, which has a low thermal conductivity coefficient and poor heat conduction performance, and can reduce the heat loss caused by the heat generated by the heating tube being conducted to the external environment;
[0021] (4) The heating module is provided with three heating zones in total, namely a first heating zone facing the ice-covered position on the conveying pipeline and two second heating zones respectively arranged at both ends of the first heating zone, and the density of the heating tubes in the first heating zone is greater than that in the second heating zone. This setting not only makes the heat reception at the ice-covered position of the conveying pipeline more uniform, prevents large stress from being generated inside the conveying pipeline due to excessive temperature difference at local positions on the conveying pipeline, thereby shortening the service life, but also can further enhance the overall ice melting ability of the heating module, and avoid blockage caused by the water vapor generated by the heat reception at the ice-covered position on the conveying pipeline condensing again near the conveying pipeline when it meets cold;
[0022] (5) The temperature sensors provided in the heating module can detect the temperatures of different heating zones in real time, avoid the influence of too high temperature on the isolation sleeve, and at the same time reduce unnecessary energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the description. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.
[0024] Figure 1 It is a schematic diagram of the installation position of the portable gas pipeline ice melting device in the present utility model;
[0025] Figure 2This is a schematic structural diagram of the portable gas pipeline ice melting device in the present utility model;
[0026] Figure 3 This is a side view of the portable gas pipeline ice melting device in the present utility model Figure 1 ;
[0027] Figure 4 This is a side view of the portable gas pipeline ice melting device in the present utility model Figure 2 ;
[0028] Figure 5 This is a schematic structural diagram of the lock;
[0029] Figure 6 This is a cross-sectional view of the portable gas pipeline ice melting device in the present utility model on the A-A plane.
[0030] In the figure: 1, conveying pipeline; 2, heat conduction sleeve; 21, first connector; 3, isolation sleeve; 31, second connector; 4, heating tube; 5, first connecting part; 51, hinge; 6, second connecting part; 61, fixing column; 7, lock; 71, limiting hole; 72, hand-held part; 8, heating module; 81, first heating area; 82, first temperature sensor; 83, second heating area; 84, second temperature sensor. Specific embodiments
[0031] Next, in combination with the drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. For ease of description, the terms "vertical", "horizontal", "left", "right", "up", "down", "inside", "outside", "bottom", etc. used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.
[0032] Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present utility model.
[0033] As shown in the attached Figure 1 and the attached Figure 2 As shown, a portable gas pipeline ice melting device is formed by splicing two semi-cylindrical heating modules 8. The cylindrical structure formed by the two heating modules 8 is sleeved outside the conveying pipeline 1 and closely adheres to the conveying pipeline 1.
[0034] The existing conveying pipeline 1 is usually made of seamless steel pipe. The heating module 8 includes a heat-conducting sleeve 2, an isolation sleeve 3 and a heating pipe 4.
[0035] Both the heat-conducting sleeve 2 and the isolation sleeve 3 are semi-cylindrical tubular structures. The diameter of the heat-conducting sleeve 2 is smaller than that of the isolation sleeve 3, and the ends of the isolation sleeve 3 and the heat-conducting sleeve 2 are connected to each other to form a cavity for accommodating the heating pipe 4.
[0036] The heat-conducting sleeve 2 is made of a metal material with excellent heat-conducting performance. In this embodiment, the heat-conducting sleeve 2 can be made of aluminum material, and the inner wall of the heat-conducting sleeve 2 is closely attached to the outer wall of the conveying pipeline 1.
[0037] The isolation sleeve 3 is made of polyethylene material with poor heat-conducting performance. Polyethylene (abbreviation: PE) is a thermoplastic plastic in the prior art, which has good elasticity, flexibility and low stiffness, and can withstand large deformations without breaking. At the same time, polyethylene is a plastic with low thermal conductivity and low heat conduction characteristics, and its thermal conductivity is much lower than that of traditional materials such as metals and ceramics. And it has excellent low-temperature resistance, and the service temperature range is between minus 70 degrees Celsius and 80 degrees Celsius.
[0038] The heating pipes 4 are fixedly distributed around the heat-conducting sleeve 2. In this embodiment, the heating pipes 4 are electric heating pipes, which can generate heat when powered on. In the portable gas pipeline de-icing device, a mobile power source, such as a storage battery, can be used to supply power to the heating pipes 4. The heating pipes 4 are closely attached to the heat-conducting sleeve 2 to uniformly transfer the heat to the conveying pipeline 1 through the heat-conducting sleeve 2.
[0039] As shown in Figure 1 Figure Figure 2 Figure Figure 3 and Figure
[0040] A first connecting portion 5 fixedly connected to the heating module 8 is provided at one end of the two heating modules 8 facing each other.
[0041] The first connecting portion 5 is a block structure. One end thereof is an arc surface which is closely attached to and fixed to the isolation sleeve 3 of the heating module 8, and the other end is a plane for installing a hinge 51, thereby realizing the hinge connection between the two heating modules 8. For the convenience of description, the end of the two heating modules 8 where the hinge 51 is installed is denoted as the hinge end, and the other end is denoted as the movable end.
[0042] A second connecting portion 6 fixedly connected to the heating module 8 is provided at the movable end of the two heating modules 8.
[0043] The second connection part 6 is a block structure, one end of which is an arc surface and is tightly attached to and fixed to the isolation sleeve 3 of the heating module 8, and the other end is a plane and is provided with a semi-cylindrical fixing column 61. The fixing columns 61 on the two second connection parts 6 are located in corresponding positions. When the opening between the two heating modules 8 is opened, the two fixing columns 61 are away from each other. When the two heating modules 8 are sleeved on the conveying pipeline 1, the opening between the two heating modules 8 is gradually closed, and the two fixing columns 61 are close to each other.
[0044] The portable gas pipeline de-icing device further comprises a lock buckle 7 for locking two fixing columns 61 .
[0045] As attached Figure 1 , Attachment Figure 4 and attached Figure 5 As shown, the lock buckle 7 is in a diamond shape as a whole, one side of which is a plane close to the second connecting portion 6, and the other side is provided with two columnar handles 72 located at both ends of the lock buckle 7.
[0046] An approximately elliptical limiting hole 71 is provided in the center of the lock buckle 7. When the two fixing posts 61 are close to each other but not tightly attached, the position of the limiting hole 71 is adjusted so that the limiting hole 71 is aligned with the two fixing posts 61 and the lock buckle 7 is sleeved on the two fixing posts 61. The lock buckle 7 is rotated 90 degrees by the handle 72. During the rotation process, the two fixing posts 61 are further approached and finally locked and fixed.
[0047] In this embodiment, the movable end is provided with 5 groups of second connection parts 6 in the axial direction of the isolation sleeve 3, and each group of second connection parts 6 is equipped with a lock buckle 7 to lock the two fixing columns 61, thereby fixing the two heating modules 8 to the periphery of the conveying pipeline 1. The operation of the lock buckle 7 is simple and quick, and it is convenient for efficient disassembly and assembly on site.
[0048] As attached Figure 1 , Attachment Figure 2 and attached Figure 6 As shown, both ends of the heat-conducting sleeve 2 are respectively provided with first connectors 21 integrally provided with the heat-conducting sleeve 2. Both ends of the isolating sleeve 3 are respectively provided with second connectors 31 integrally provided with the isolating sleeve 3.
[0049] The first connector 21 is a semicircular ring structure, and its diameter is larger than the diameter of the heat-conducting sleeve 2, so a semicircular arc groove is formed between the first connector 21 and the outer wall of the heat-conducting sleeve 2. The second connector 31 is a semicircular ring structure, and its diameter is smaller than the diameter of the isolation sleeve 3, and the second connector 31 and the first connector 21 are adapted in shape and size, and the two can bite each other. The plug-in fit of the first connector 21 and the second connector 31 can be completed by applying an external force to slightly deform the isolation sleeve 3 and the second connector 31, so that a closed cavity is formed between the isolation sleeve 3 and the heat-conducting sleeve 2.
[0050] The closed cavity formed between the isolation sleeve 3 and the heat-conducting sleeve 2 can be divided into a first heating zone 81 and a second heating zone 83 which are integrally arranged.
[0051] The first heating zone 81 is directly opposite to the ice formation position on the delivery pipe 1, and the two second heating zones 83 are respectively arranged at both ends of the first heating zone 81. The density of the heating tubes 4 in the first heating zone 81 is greater than the density of the heating tubes 4 in the second heating zone 83. In this embodiment, the density of the heating tubes 4 in the first heating zone 81 is twice the density of the heating tubes 4 in the second heating zone 83.
[0052] When the heating tube 4 is powered on and heated, the first heating zone 81 quickly generates a large amount of heat, and the temperature of the delivery pipe 1 wrapped by the first heating zone 81 rises rapidly. In order to prevent the excessive temperature difference at a local position on the delivery pipe 1 from causing a large stress inside the delivery pipe 1 and shortening the service life, and to make the heating at the frozen position of the delivery pipe 1 more uniform, it is necessary to make the second heating zones 83 at both ends of the first heating zone 81 work and heat while the first heating zone 81 is working and heating, which can not only further enhance the overall deicing ability of the heating module 8, but also prevent the water vapor generated by the heat at the frozen position on the delivery pipe 1 from condensing again when it encounters cold near the delivery pipe 1 and causing blockage.
[0053] A first temperature sensor 82 is provided in the first heating zone 81, and a second temperature sensor 84 is provided in the second heating zone 83. In this embodiment, since the heat loss on the delivery pipeline 1 is relatively fast and heat loss is inevitable during the heating process, the maximum temperature of the second heating zone 83 is set to 30 degrees Celsius and the maximum temperature of the first heating zone 81 is set to 50 degrees Celsius based on field experience. When the first temperature sensor 82 or the second temperature sensor 84 detects that the temperature in the area exceeds the set value, the heating pipe 4 in the area is automatically powered off to avoid the influence of excessive temperature on the isolation sleeve 3 and reduce unnecessary energy consumption.
[0054] The implementation principle of the above embodiment is:
[0055] When it is found that the conveying pipeline 1 is blocked by ice and needs to be thawed, open the movable ends of the two heating modules 8, put the heating module 8 on the conveying pipeline 1, and make the first heating zone 81 face the ice position. Use the lock 7 to fix the heating module 8 on the conveying pipeline 1, connect the mobile power supply, and the heating tube 4 starts to heat up when it is powered on. The heat-conducting sleeve 2 in the heating module 8 has high thermal conductivity and is close to the conveying pipeline 1, so the heat generated by the heating tube 4 when it heats up can be quickly transferred to the conveying pipeline 1. The first heating zone 81 quickly generates a large amount of heat, and the second heating zone 83 works and generates heat at the same time to melt the ice in the conveying pipeline 1.
[0056] Although the preferred embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present utility model. Obviously, those skilled in the art can make various changes and variations to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and its equivalent technologies, the present utility model is also intended to include these changes and variations.
Claims
1. A portable gas pipeline ice melting device, characterized in that, It is formed by splicing two semi-cylindrical heating modules (8). The cylindrical structure formed by the two heating modules (8) is sleeved around the conveying pipeline (1) and closely adheres to the conveying pipeline (1). Each heating module (8) is provided with a heating pipe (4) capable of generating heat. The heating module (8) includes an integrally provided first heating area (81) and a second heating area (83). The first heating area (81) faces the icing position on the conveying pipeline (1). The two second heating areas (83) are respectively arranged at both ends of the first heating area (81). The density of the heating pipes (4) in the first heating area (81) is greater than the density of the heating pipes (4) in the second heating area (83).
2. The portable gas pipeline ice melting device according to claim 1, wherein, The heating module (8) includes a heat-conducting sleeve (2) and an isolation sleeve (3). The heat-conducting sleeve (2) closely adheres to the conveying pipeline (1). The isolation sleeve (3) is connected to the end of the heat-conducting sleeve (2) to form a cavity for accommodating the heating pipe (4). The heating pipes (4) are fixedly distributed around the heat-conducting sleeve (2).
3. The portable gas pipeline ice melting device according to claim 2, wherein The heat-conducting sleeve (2) is made of a metal material.
4. The portable gas pipeline ice melting device according to claim 2, wherein, The isolation sleeve (3) is made of a polyethylene material.
5. The portable gas pipeline ice melting device according to claim 2, characterized in that, A first temperature sensor (82) for detecting the temperature of the first heating area (81) and a second temperature sensor (84) for detecting the temperature of the second heating area (83) are arranged in the cavity formed by the isolation sleeve (3) and the heat-conducting sleeve (2).
6. The portable gas pipeline ice melting device according to claim 1, characterized in that, The density of the heating pipes (4) in the first heating area (81) is twice the density of the heating pipes (4) in the second heating area (83).
7. The portable gas pipeline ice melting device according to claim 6, wherein, The maximum heating temperature of the second heating area (83) is 30 degrees Celsius, and the maximum heating temperature of the first heating area (81) is 50 degrees Celsius.
8. The portable gas pipeline ice melting device according to claim 1, characterized in that, First connection parts (5) fixedly connected to the heating modules (8) are arranged at opposite ends of the two heating modules (8). Hinges (51) are installed on the first connection parts (5). The two heating modules (8) can rotate around the axis of the hinge (51).
9. The portable gas pipeline ice melting device according to claim 8, wherein It further includes a lock (7). Second connection parts (6) fixedly connected to the heating modules (8) are arranged at opposite ends of the two heating modules (8). A fixing post (61) is respectively arranged on each of the second connection parts (6) of the two heating modules (8), and the positions of the fixing posts (61) on the two second connection parts (6) correspond to each other. The lock (7) locks the two fixing posts (61).
10. The portable gas pipeline ice melting device according to claim 2, wherein A first connection head (21) is arranged at the end of the heat-conducting sleeve (2), and a second connection head (31) is arranged at the end of the isolation sleeve (3). The first connection head (21) and the second connection head (31) are engaged with each other.