High-temperature-resistant explosion-proof electromagnetic heating rod of storage tank for oil field

Abstract

The utility model relates to the technical field of electric heating, in particular to a high-temperature-resistant explosion-proof electromagnetic heating rod of a storage tank for an oil field, which is lower in cost, not easy to oxidize and light in weight, and comprises a shell, a heating coil, a temperature sensor and a power line, a heating coil is arranged in the shell, a power line supplies power to the heating coil, the heating coil is made of a high-temperature-resistant composite aluminum wire material, a temperature sensor is further arranged at the position of the heating coil, and by means of the combination of an aluminum core and a high-temperature-resistant insulating layer, the electrical conductivity and the thermal conductivity of the heating coil are guaranteed; and the insulating property and the high temperature resistance of the heating coil are ensured, and the problem that copper or copper alloy is easy to oxidize and expand at high temperature is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating, in particular to a high-temperature resistant and explosion-proof electromagnetic heating rod for oil field storage tanks, which has lower cost, is not easily oxidized and is light in weight. Background Art

[0002] A heating rod is an auxiliary heating device that converts electrical energy into thermal energy. It is primarily used for antifreeze, insulation, and heating of pipes, valves, pumps, tanks, and other equipment in the petroleum, chemical, power, and machinery industries. Existing electromagnetic heating rods used in oil fields are primarily made of copper or copper alloys. These are relatively heavy and expensive for a given volume. Furthermore, copper or copper alloys are susceptible to oxidation and expansion at high temperatures. Utility Model Content

[0003] Based on this, the purpose of the utility model is to overcome the shortcomings of the existing technology and provide a high-temperature resistant and explosion-proof electromagnetic heating rod for oil field storage tanks that is lower in cost, not easy to oxidize, and light in weight.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a high-temperature resistant and explosion-proof electromagnetic heating rod for oil field storage tanks, comprising a shell, a heating coil, a temperature sensor and a power cord, one end of the shell being configured to be sealed, and the other end of the shell being provided with a detachable sealing end cover, a heating coil being provided inside the shell, and a power cord supplying power to the heating coil, characterized in that the material of the heating coil is a high-temperature resistant composite aluminum wire material, and a temperature sensor is also provided at the heating coil.

[0005] Further optimized, the high-temperature resistant composite aluminum wire consists of an aluminum core and a high-temperature resistant insulation layer coated on the outside of the aluminum core.

[0006] Further optimization, the cross-sectional area of ​​the aluminum core is 6mm 2 Up to 25mm 2 The thickness of the high temperature resistant insulation layer is 0.1mm to 0.5mm, and the material of the high temperature resistant insulation layer is ceramic or other high temperature resistant non-metallic materials.

[0007] Further optimized, the core of the shell is fixedly provided with an inner tube, the heating coil is wound on the outer wall of the inner tube, and a gap is provided between the heating coil and the inner wall of the shell.

[0008] Further optimization is that an insulating layer is provided between the heating coil and the outer wall of the inner tube.

[0009] Further optimized, the temperature sensor is arranged inside the inner tube.

[0010] In summary, the present invention has the following beneficial effects:

[0011] 1. Compared with traditional electromagnetic heating rods made of copper or copper alloys, electromagnetic heating rods made of high-temperature resistant composite aluminum wire have the advantages of light weight, low cost, high temperature resistance, low oxidation resistance, and low expansion resistance. They can operate stably in high-temperature, high-pressure, flammable and explosive oil field environments, improving the storage and transportation efficiency and safety of oil products. The combination of aluminum core and high-temperature resistant insulation layer ensures both the electrical and thermal conductivity of the heating coil and its insulation and high temperature resistance, effectively solving the problem of copper or copper alloys being easily oxidized and expanded at high temperatures.

[0012] 2. This device can monitor the temperature of the heating coil in real time by setting a temperature sensor. By adjusting the current and voltage of the power line, the temperature of the heating coil can be controlled to avoid overheating or overcooling of the heating coil, thereby ensuring the working efficiency and life of the heating coil.

[0013] 3. This device can also protect the internal structure of the electromagnetic heating rod by selecting appropriate shell materials, prevent external mechanical strength and corrosion resistance, and effectively solve the problem that stainless steel is easy to deform and crack at high temperatures;

[0014] 4. This device also has an explosion-proof function because the heating coil is wrapped with a high-temperature resistant insulation layer, and an insulation layer is provided between the heating coil and the outer wall of the inner tube to prevent the heating coil from vibrating and wearing the outer skin during operation, thereby preventing electric leakage and generating electric sparks with the oil or air in the storage tank, thereby avoiding combustion or explosion of the oil or air and improving the safety of the storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic cross-sectional view of the utility model;

[0016] In the figure: outer shell 1, heating coil 2, temperature sensor 3, power line 4, sealing end cover 5, terminal head 6, inner tube 7, insulation layer 8. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] like Figure 1 As shown, a high-temperature resistant and explosion-proof electromagnetic heating rod for oil field storage tanks includes a shell 1, a heating coil 2, a temperature sensor 3 and a power line 4.

[0019] The housing 1 has a rectangular cross-section, with its length and width determined by the size of the storage tank and the dimensions of the heating coil 2. The housing 1 is made of stainless steel or other high-temperature and high-pressure-resistant metal. The right end of the housing 1 is sealed, and the left end of the housing 1 is provided with a removable sealing end cap 5, which is connected to the right end of the housing 1 via bolts and a sealing gasket. The sealing end cap 5 is also provided with a terminal stud 6, one end of which is located within the housing 1, and the other end of which extends outside the housing 1.

[0020] The core inside the outer shell 1 is fixedly provided with an inner tube 7, the right end of the inner tube 7 is fixedly connected to the inner wall of the outer shell 1, and the left end of the inner tube 7 is open. Moreover, there is a space between the outer wall of the inner tube 7 and the inner wall of the outer shell 1. The heating coil 2 is wound on the outer wall of the inner tube 7, and a gap is provided between the heating coil 2 and the inner wall of the outer shell 1 to facilitate heat dissipation and reduce electromagnetic field losses. The material of the heating coil 2 is a high-temperature resistant composite aluminum wire, which consists of an aluminum core and a high-temperature resistant insulation layer wrapped around the outside of the aluminum core. The cross-sectional area of ​​the aluminum core is 6mm 2 Up to 25mm 2 The thickness of the high-temperature insulation layer ranges from 0.1mm to 0.5mm, depending on the tank size and heating requirements. The insulation is made of ceramic or other high-temperature-resistant non-metallic materials. The conductivity of the high-temperature composite aluminum wire is 50% to 80% of that of copper, and its high-temperature resistance allows it to operate normally at temperatures between 200°C and 300°C.

[0021] The heating coil 2 is connected to the terminal post 6 inside the shell 1, and the terminal post 6 outside the shell 1 is connected to the power cord 4. The operation of the heating coil 2 is controlled by controlling the time and current of the power cord 4 to energize the heating coil 2.

[0022] When the heating coil 2 is working, the heating coil 2 will vibrate at high frequencies. These high-frequency vibrations may damage the high-temperature resistant insulation layer of the high-temperature resistant composite aluminum wire, causing the outer shell 1 connected to the inner tube 7 to become charged, which is dangerous. Therefore, an insulating layer 8 is provided between the heating coil 2 and the outer wall of the inner tube 7. The insulating layer 8 effectively avoids the risk of leakage.

[0023] In order to measure the temperature more effectively and control the operation of the heating coil 2 based on the temperature feedback, a temperature sensor 3 is further provided inside the inner tube 7. In other embodiments, the temperature sensor 3 can also be provided at other positions inside the housing, but in order to accurately measure the temperature, the temperature sensor 3 is not in direct contact with the heating coil 2.

[0024] In this embodiment, the temperature sensor 3 is in the shape of an elongated strip, and its length and diameter are determined according to the size of the heating coil 2. The material of the temperature sensor 3 is platinum or other high-temperature resistant metal materials. The temperature measurement range of the temperature sensor 3 is 0°C to 500°C, and the temperature measurement accuracy of the temperature sensor 3 is ±1°C. The heating coil 2 is parallel to the heating coil 2 and a certain distance is maintained from the heating coil 2 to facilitate detection of the temperature of the heating coil 2. Both ends of the temperature sensor 3 are connected to the terminal blocks 6 to facilitate communication with the power cord 4.

[0025] In this embodiment, the power cord 4 is in the shape of a slender strip, and the material of the power cord 4 is high-temperature resistant composite aluminum wire or other high-temperature resistant conductive material. One end of the power cord 4 is connected to the terminal head 6, and the other end of the power cord 4 is connected to the ground AC power supply. The voltage of the power cord 4 is 220V to 380V, the current of the power cord 4 is 10A to 50A, and the frequency of the power cord 4 is 50Hz to 60Hz.

[0026] The working principle and working process of the explosion-proof electromagnetic heating rod for oil field storage tanks made of high-temperature resistant composite aluminum wire of the present invention are as follows:

[0027] - When the power cord 4 is connected to an AC power source, the AC power is transmitted to the heating coil 2 through the power cord 4. The heating coil 2 generates eddy currents and hysteresis losses under the action of the alternating electromagnetic field, thereby converting electrical energy into heat energy. The temperature of the heating coil 2 gradually increases. At the same time, the heating coil 2 radiates an electromagnetic field to the outside world. The intensity and frequency of the electromagnetic field are proportional to the voltage and frequency of the AC power.

[0028] - When the temperature of the heating coil 2 reaches a certain set value, the temperature sensor 3 detects the temperature of the heating coil 2 and transmits the temperature signal to the ground controller through the power line 4. The controller adjusts the voltage and current of the AC power supply according to the temperature signal to control the temperature of the heating coil 2 within the set range, avoiding overheating or overcooling of the heating coil 2 and ensuring the working efficiency and life of the heating coil 2;

[0029] - When the electromagnetic field radiated by the heating coil 2 reaches a certain intensity and frequency, the electromagnetic field heats the oil in the tank, gradually increasing the temperature of the oil, thereby reducing the viscosity and flow resistance of the oil and improving the fluidity and quality of the oil;

[0030] - When the temperature of the oil reaches a certain level, the power line 4 can be turned off or on as needed to stop or continue heating the oil to achieve the best storage and transportation effect.

[0031] Parts not involved in the present invention are the same as those in the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0032] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A high temperature resistant and explosion proof electromagnetic heating rod for oil field storage tanks, comprising a shell, a heating coil, a temperature sensor and a power line, wherein one end of the shell is set to be sealed, and the other end of the shell is provided with a detachable sealing end cover, a heating coil is provided inside the shell, and the power line supplies power to the heating coil, characterized in that: The heating coil is made of high temperature resistant composite aluminum wire material, and a temperature sensor is also arranged at the heating coil.

2. The high temperature resistant and explosion proof electromagnetic heating rod for oil field storage tanks according to claim 1 is characterized in that: The high temperature resistant composite aluminum wire consists of an aluminum core and a high temperature resistant insulation layer coated on the outside of the aluminum core.

3. The high temperature resistant and explosion proof electromagnetic heating rod for oil field storage tanks according to claim 2 is characterized in that: The cross-sectional area of ​​the aluminum core is 6 mm² to 25 mm², the thickness of the high-temperature resistant insulating layer is 0.1 mm to 0.5 mm, and the material of the high-temperature resistant insulating layer is ceramic or other high-temperature resistant non-metallic materials.

4. The high temperature resistant and explosion proof electromagnetic heating rod for oil field storage tanks according to claim 1 or 2, characterized in that: An inner tube is fixedly arranged on the core of the outer shell, the heating coil is wound on the outer wall of the inner tube, and a gap is arranged between the heating coil and the inner wall of the outer shell.

5. The high temperature resistant explosion-proof electromagnetic heating rod for oil field storage tanks according to claim 4 is characterized in that: An insulating layer is arranged between the heating coil and the outer wall of the inner tube.

6. The high temperature resistant and explosion proof electromagnetic heating rod for oil field storage tanks according to claim 4 is characterized in that: The temperature sensor is disposed inside the inner tube.

7. The high temperature resistant explosion-proof electromagnetic heating rod for oil field storage tanks according to claim 5 or 6, characterized in that: The sealing end cover is provided with a terminal post, and the power line is connected to the heating coil via the terminal post.

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