Electromagnetic heating device for three-phase mixed transportation glass fiber reinforced plastic pipeline

Abstract

The invention relates to the technical field of pipeline electromagnetic heating, in particular to a three-phase mixed transportation glass fiber reinforced plastic pipeline electromagnetic heating device which comprises a glass fiber reinforced plastic pipeline, a control module and a plurality of heating plates fixedly installed on the inner side of the lower portion of the glass fiber reinforced plastic pipeline at intervals in the length direction. A plurality of electromagnetic coils are fixedly mounted at intervals below the glass fiber reinforced plastic pipeline corresponding to the positions of the heating plates in the length direction, and each electromagnetic coil is wound by a plurality of circles. The heating device is reasonable and compact in structure, alternating current can be provided for the electromagnetic coil by arranging the control module, the power of the electromagnetic coil can be controlled, and after the electromagnetic coil is electrified, the alternating current generates an alternating magnetic field to act on the wavy heating plate, so that fluid in the glass fiber reinforced plastic pipeline is heated; compared with a traditional method that an electromagnetic coil is spirally wound on the outer side of the pipeline, the installation mode is simpler, the installation cost is low, meanwhile, the distance between the electromagnetic coil and the heating plate is closer, the heating effect is better, and the electromagnetic heating efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic heating of pipelines, in particular to an electromagnetic heating device for a three-phase mixed-transmission glass fiber reinforced plastic pipeline. Background Art

[0002] Oilfield pipelines in cold areas usually need to be heated for transportation, and most of the pipelines are made of steel. The electromagnetic heating method for steel pipelines has been perfected, and there are mature products and equipment on the market, as well as relevant patent documents. At present, the common heating method is to heat the pipeline through a coil, and then indirectly heat the fluid in the pipeline after the pipeline is heated up. There is also a method of indirectly heating the pipeline fluid by heating the water bath sleeve outside the pipeline. However, steel pipelines are prone to corrosion, so some oil fields in China have adopted non-metallic fiberglass pipelines to transport fluids. For non-metallic pipelines, there is currently a patent that proposes to set a cylindrical ferromagnet in the pipeline, and to achieve heating of the fluid in the pipeline by setting an electromagnetic coil outside the pipeline. Most oil wells in oil fields produce oil, gas and water at the same time. If phase-separated transportation is adopted, the cost of pipeline construction will be greatly increased. However, the existing method of heating fluid in the pipeline is difficult to be directly used for heating mixed fluids, and the ferromagnet in the device is far away from the coil, and the heating effect is limited, which is difficult to meet the fluid heating requirements of the three-phase mixed fiberglass pipeline on site. Summary of the invention

[0003] The present invention provides an electromagnetic heating device for a three-phase mixed fiberglass reinforced plastic pipeline, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problem that the fluid in the existing three-phase mixed fiberglass reinforced plastic pipeline is difficult to be directly heated.

[0004] The technical solution of the present invention is achieved through the following measures: a three-phase mixed fiberglass pipe electromagnetic heating device, comprising a fiberglass pipe, a control module and a plurality of heating plates fixedly installed on the inner side of the lower part of the fiberglass pipe at intervals along the length direction, and a plurality of electromagnetic coils fixedly installed at intervals along the length direction under the fiberglass pipe corresponding to each heating plate position, each electromagnetic coil is wound with a plurality of turns, and both ends of each electromagnetic coil are connected to the control module.

[0005] The following are further optimizations and / or improvements to the above technical solutions: The above may also include a temperature sensor. A radially penetrating mounting hole is provided on the lower side of the glass fiber reinforced plastic pipe corresponding to the two ends of each heating plate. A temperature sensor is sealed and fixedly installed in each mounting hole. Each temperature sensor is connected to the control module.

[0006] Each of the heating plates may be wavy.

[0007] The width of the heating plate may be the same as the inner diameter of the glass fiber reinforced plastic pipe.

[0008] The heating plate may be made of stainless steel.

[0009] The present invention has a reasonable and compact structure. By setting a control module, it can provide alternating current to the electromagnetic coil and control the power of the electromagnetic coil. After the electromagnetic coil is energized, the alternating current generates an alternating magnetic field, which acts on the wavy heating plate, thereby heating the fluid in the glass fiber reinforced plastic pipe. Compared with the traditional method of spirally winding the electromagnetic coil on the outside of the pipe, the installation method of the present invention is simpler and has a low installation cost. At the same time, the distance between the electromagnetic coil and the heating plate is closer, the heating effect is better, and the electromagnetic heating efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Attached Figure 1 It is a schematic diagram of the front cross-sectional structure of the first embodiment.

[0011] Attached Figure 2 It is a schematic diagram of the right side cross-sectional structure of the glass fiber reinforced plastic pipe in Example 1.

[0012] Attached Figure 3 This is a schematic diagram of the cross-sectional structure of the electromagnetic coil in Example 1 when viewed from above.

[0013] Attached Figure 4 This is a circuit block diagram of Embodiment 1.

[0014] The codes in the attached drawings are: 1 is the glass fiber reinforced plastic pipe, 2 is the control module, 3 is the heating plate, 4 is the electromagnetic coil, and 5 is the temperature sensor. DETAILED DESCRIPTION

[0015] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0016] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0017] The present invention will be further described below in conjunction with embodiments and drawings: Embodiment 1: As shown in the attached Figures 1 to 4 As shown, the three-phase mixed fiberglass pipeline electromagnetic heating device includes a fiberglass pipeline 1, a control module 2 and a plurality of heating plates 3 fixedly installed at intervals along the length direction on the inner side of the lower part of the fiberglass pipeline 1, and a plurality of electromagnetic coils 4 are fixedly installed at intervals along the length direction below the fiberglass pipeline 1 corresponding to the position of each heating plate 3, each electromagnetic coil 4 is wound with a plurality of turns, and both ends of each electromagnetic coil 4 are connected to the control module 2.

[0018] According to the requirements, the control module 2 is an existing well-known technology, such as the RD100 electromagnetic heater. The electromagnetic coil 4 can be suspended under the FRP pipe 1, or can be fixedly installed under the FRP pipe 1 through a bracket. The FRP pipe 1 includes a number of branch pipes fixed together by flange connections. During use, by setting the control module 2 and the electromagnetic coil 4, it is possible to provide alternating current to the electromagnetic coil 4, and the power of the electromagnetic coil 4 can also be controlled. After the electromagnetic coil 4 is energized, the alternating current generates an alternating magnetic field, which acts on the wavy heating plate 3, thereby heating the fluid in the FRP pipe 1. The present invention has a reasonable and compact structure and is easy to use. Compared with the traditional method of spirally winding the electromagnetic coil 4 on the outside of the pipe, the installation method in the present invention is simpler and has a low installation cost. At the same time, the distance between the electromagnetic coil 4 and the heating plate 3 is closer, the heating effect is better, and the electromagnetic heating efficiency is improved, thereby achieving the purpose of simply and efficiently heating the mixed fluid.

[0019] According to actual needs, the above three-phase mixed fiberglass pipeline electromagnetic heating device can be further optimized and / or improved: Embodiment 2: As an optimization of the above embodiment, as shown in the attached Figure 1 , 4 As shown, the temperature sensor 5 is also included. The lower side of the glass fiber reinforced plastic pipe 1 corresponding to the two ends of each heating plate 3 is provided with a radially penetrating mounting hole. A temperature sensor 5 is sealed and fixedly installed in each mounting hole, and each temperature sensor 5 is connected to the control module 2. According to the needs, two adjacent heating plates 3 can also share a temperature sensor 5. The temperature sensor 5 is an existing well-known technology, such as a 902810 temperature sensor probe. During use, through such a setting, the temperature of the mixed fluid medium before and after heating can be detected. The power of the electromagnetic coil 4 is controlled according to the temperature. If the fluid temperature data obtained by the temperature sensor 5 near the outlet of the glass fiber reinforced plastic pipe 1 is lower than the preset temperature, the control module 2 increases the power of the electromagnetic coil 4 corresponding to the heating plate 3 of this section, thereby increasing the temperature of the fluid. If the fluid temperature data obtained by the temperature sensor 5 near the outlet of the glass fiber reinforced plastic pipe 1 is higher than the preset temperature, the control module 2 reduces the power of the electromagnetic coil 4 corresponding to the heating plate 3 of this section, thereby reducing the temperature of the fluid.

[0020] Embodiment 3: As an optimization of the above embodiment, as shown in the attached Figure 1 , 4 As shown, each heating plate 3 is wavy. In use, such an arrangement is beneficial to increasing the heating area, and can also cause turbulence in the fluid in the glass fiber reinforced plastic pipe 1, causing disturbance to the fluid, thereby better heating the fluid.

[0021] Embodiment 4: As an optimization of the above embodiment, as shown in the attached Figure 2As shown, the width of the heating plate 3 is the same as the inner diameter of the FRP pipe 1, and the material of the heating plate 3 is stainless steel. During use, the heating plate 3 is fixed in the middle and lower part of the FRP pipe 1. The wavy design is conducive to increasing the heating area. The wavy strip stainless steel plate generates turbulence and disturbs the fluid, thereby better heating the fluid.

[0022] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. A three-phase mixed fiberglass pipeline electromagnetic heating device, characterized in that It includes a FRP pipe, a control module and a plurality of heating plates fixedly installed at intervals along the length direction on the inner side of the lower part of the FRP pipe. Corresponding to the position of each heating plate, a plurality of electromagnetic coils are fixedly installed at intervals along the length direction under the FRP pipe. Each electromagnetic coil is wound with a plurality of turns, and both ends of each electromagnetic coil are connected to the control module.

2. The electromagnetic heating device for three-phase mixed fiberglass pipeline according to claim 1 is characterized in that It also includes a temperature sensor. The lower side of the glass fiber reinforced plastic pipe at both ends of each heating plate is provided with radially penetrating mounting holes. A temperature sensor is sealed and fixedly installed in each mounting hole. Each temperature sensor is connected to the control module.

3. The electromagnetic heating device for three-phase mixed flow FRP pipeline according to claim 1 or 2, characterized in that Each heating plate is wavy in shape.

4. The electromagnetic heating device for three-phase mixed flow FRP pipeline according to claim 1 or 2, characterized in that The width of the heating plate is the same as the inner diameter of the FRP pipe.

5. The electromagnetic heating device for three-phase mixed-flow FRP pipeline according to claim 3 is characterized in that The width of the heating plate is the same as the inner diameter of the FRP pipe.

6. The electromagnetic heating device for three-phase mixed-flow fiberglass reinforced plastic pipeline according to claim 1, 2 or 5, characterized in that The heating plate is made of stainless steel.

7. The electromagnetic heating device for three-phase mixed-flow fiberglass reinforced plastic pipeline according to claim 3 is characterized in that The heating plate is made of stainless steel.

8. The electromagnetic heating device for three-phase mixed flow FRP pipeline according to claim 4 is characterized in that The heating plate is made of stainless steel.

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