Safety device of electric heating organic heat carrier furnace

Abstract

The utility model discloses a safety device of an electric heating organic heat transfer material furnace, the electric heating organic heat transfer material furnace comprises a boiler barrel for storing an organic heat transfer material, a plurality of electric heating pipes for heating the organic heat transfer material and an electric controller, the boiler barrel is horizontally arranged, the left end of the boiler barrel is an open end, and the right end of the boiler barrel is a closed end; a flange plate used for sealing the open end is arranged at the open end of the boiler barrel, an organic heat carrier liquid inlet is formed in the bottom of the left end of the boiler barrel, an organic heat carrier liquid outlet is formed in the top of the right end of the boiler barrel, and the electric heating pipes are electrically connected with an electric controller. The heating pipe sections of the plurality of electric heating pipes sequentially penetrate through the flange plate from high to low and are horizontally arranged in the boiler barrel, a temperature measuring sensor is mounted on the top surface of the heating pipe section of the highest electric heating pipe, and the temperature measuring sensor is electrically connected with an electric controller. According to the utility model, dry burning and surface coking of the electric heating pipe can be prevented, and accidents such as vaporization of the organic heat carrier and explosion of the organic heat carrier furnace can be avoided.

Description

Technical Field

[0001] The utility model relates to an organic heat carrier furnace used for heat exchange, in particular to a safety device for an electrically heated organic heat carrier furnace, belonging to the technical field of industrial boilers. Background Art

[0002] The electric heating organic heat carrier furnace is a special industrial boiler. It uses organic heat carrier as heat medium. The heating tube section of the electric heating tube is immersed in the organic heat carrier of the drum. The electric heating tube is powered on to directly heat the organic heat carrier. The heat medium circulation pump is used to force the liquid phase to circulate. After the heat energy is transported to the heat-using device or equipment, it is returned for reheating and recycling. It is a new type of environmentally friendly, energy-saving, low-pressure (under normal pressure or lower pressure), safe, and can provide high-temperature heat energy. Direct-flow special industrial boiler. In recent years, as the country pays attention to environmental protection and vigorously advocates the use of clean energy, electric heating organic heat carrier furnaces have been widely used in many industries such as petroleum, chemical industry, chemical fiber, building materials, light industry, textile, printing and dyeing, and food.

[0003] The safe operation of the electric heating organic heat carrier furnace is extremely important. In actual operation, when the electric heating tube is powered on, if due to some human misoperation or equipment failure, the following two situations often occur. The first is that the organic heat carrier in the drum of the electric heating organic heat carrier furnace is insufficient. At this time, the heating tube section of the electric heating tube is not fully or partially immersed in the organic heat carrier, and the heat generated by the heating tube section of the electric heating tube is not taken away by the organic heat carrier, resulting in dry burning of the electric heating tube and increasing the temperature of the heating tube section. This will bring two serious consequences: one is that the electric heating tube is burned out; the other is that the electric heating When the tube is in a high temperature state, when the organic heat carrier suddenly enters, the organic heat carrier will be instantly vaporized, and high pressure will be generated in the drum of the electric heating organic heat carrier furnace. In serious cases, an explosion accident will occur; the second is that the organic heat carrier in the drum of the electric heating organic heat carrier furnace does not flow, and the organic heat carrier cannot take away the heat generated by the electric heating tube, causing the surface temperature of the heating tube section of the electric heating tube to rise. This will also bring two serious consequences: one is that the organic heat carrier deteriorates and cokes on the surface of the electric heating tube; the other is that due to the formation of coke on the surface of the electric heating tube, the thermal conductivity is poor, causing the electric heating tube to overheat and burn out. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a safety device for an electrically heated organic heat carrier furnace which can prevent dry burning and surface coking of the electric heating tube, and avoid vaporization of the organic heat carrier and explosion accidents of the organic heat carrier furnace.

[0005] In order to solve the above technical problems, the utility model adopts such a safety device of an electrically heated organic heat carrier furnace, which comprises a boiler drum for storing an organic heat carrier, a plurality of electric heating tubes for heating the organic heat carrier, and an electric controller, wherein the boiler drum is arranged horizontally, the left end of the boiler drum is an open end, and the right end is a closed end, a flange for closing the open end is provided at the open end of the boiler drum, an organic heat carrier liquid inlet is provided at the bottom of the left end of the boiler drum, and an organic heat carrier liquid outlet is provided at the top of the right end of the boiler drum, the plurality of electric heating tubes are electrically connected to the electric controller, the heating tube sections of the plurality of electric heating tubes are sequentially passed through the flange from high to low and are horizontally placed in the boiler drum, a temperature sensor is installed on the top surface of the heating tube section of the highest electric heating tube, and the temperature sensor is electrically connected to the electric controller.

[0006] As a preferred embodiment of the utility model, n vertical guide plates arranged at intervals from each other are arranged in sequence in the inner cavity of the boiler drum and between the liquid inlet and the liquid outlet, n is an even number and n≥4, wherein the first guide plate is adjacent to the organic heat carrier liquid inlet and fixedly connected to the bottom of the inner cavity of the boiler drum, the second guide plate is fixedly connected to the top of the inner cavity of the boiler drum, the third guide plate is fixedly connected to the bottom of the inner cavity of the boiler drum, and so on, the last guide plate is adjacent to the organic heat carrier liquid outlet and fixedly connected to the top of the inner cavity of the boiler drum.

[0007] As a preferred embodiment of the present invention, the temperature sensor is a contact temperature sensor, and the detection tail end of the temperature sensor is fixedly installed on the top surface of the heating pipe section of the highest electric heating pipe by a pipe clamp, welding or binding.

[0008] As a preferred implementation of the utility model, the temperature sensor is a thermal resistor temperature sensor, a thermocouple temperature sensor, or a bimetallic temperature sensor.

[0009] As a preferred implementation of the utility model, the electric controller is an industrial computer or an ARM embedded industrial controller or a DDC digital controller with a human-machine interface.

[0010] After adopting the above structure, the utility model has the following beneficial effects:

[0011] Under normal operation of the electric heating organic heat carrier furnace, the organic heat carrier in the drum is sufficient and in a flowing state. When the electric heating tube is energized, the heat generated by the electric heating tube is taken away by the organic heat carrier, and the surface temperature of the heating tube section of the electric heating tube is within the specified temperature range. When the organic heat carrier in the drum is insufficient due to some human misoperation or equipment failure, the heating tube section of the electric heating tube is not fully or partially immersed in the organic heat carrier, the electric heating tube is dry-burned, and the surface temperature of the heating tube section increases, the electric controller detects the temperature data of the temperature sensor in real time. When the temperature exceeds the limit value, the electric controller immediately and automatically cuts off the power supply of the electric heating organic heat carrier furnace, thereby preventing the electric heating tube from being dry-burned and damaged and the surface of the electric heating tube from coking; or due to the above reasons, the organic heat carrier in the drum does not flow, the heat generated by the heating tube section of the electric heating tube is not taken away by the organic heat carrier, causing the surface temperature of the heating tube section to increase, the electric controller detects the temperature data of the temperature sensor in real time. When the temperature exceeds the limit value, the electric controller immediately and automatically cuts off the power supply of the electric heating organic heat carrier furnace, thereby preventing the electric heating tube from being dry-burned and damaged and the surface of the electric heating tube from coking, ensuring the normal operation of the electric heating tube and not being burned, avoiding the vaporization of the organic heat carrier, and preventing accidents such as explosion of the organic heat carrier furnace.

[0012] The utility model arranges n vertical and spaced guide plates in the inner cavity of the boiler drum and between the liquid inlet and the liquid outlet. Such a structure can optimize the flow path of the organic heat carrier in the boiler drum, reduce the flow dead zone, and ensure that the temperature of the organic heat carrier in the boiler drum is uniform, thereby making the detection accuracy of the temperature sensor more accurate and the detection data more real and effective.

[0013] The utility model has a simple structure and is easy to install. The electric heating organic heat carrier furnace has higher safety performance and is conducive to popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0015] Figure 1 The utility model is a schematic diagram of the structure of the safety device of the electrically heated organic heat carrier furnace. DETAILED DESCRIPTION

[0016] See also Figure 1The safety device of an electrically heated organic heat carrier furnace is shown in the figure. The electrically heated organic heat carrier furnace comprises a drum 1 for storing an organic heat carrier, a plurality of electric heating tubes 2 for heating the organic heat carrier, and an electric controller. The organic heat carrier and the electric controller are not shown in the figure. The drum 1 is arranged horizontally. The left end of the drum 1 is an open end and the right end is a closed end. A flange 1-1 for closing the open end is provided at the open end of the drum 1. During implementation, the flange 1-1 is sealed and fixedly connected to the open end by bolts and a sealing ring. An organic heat carrier liquid inlet 1-2 is provided at the bottom of the left end of the drum 1, and an organic heat carrier liquid outlet 1-3 is provided at the top of the right end of the drum 1. During operation, the organic heat carrier with a lower temperature is discharged into the drum 1. The heat carrier enters the drum 1 from the organic heat carrier liquid inlet 1-2, and is output to the heat-using equipment from the organic heat carrier liquid outlet 1-3 after being heated. The plurality of electric heating tubes 2 are preferably electrically connected to the electric controller through a junction box 6. The heating tube sections 2-1 of the plurality of electric heating tubes 2 pass through the flange 1-1 in sequence from high to low and are horizontally placed in the drum 1. The electric heating tubes 2 are sealed and fixedly connected to the flange 1-1. A temperature sensor 3 is installed on the top surface of the heating tube section 2-1 of the highest electric heating tube 2. The temperature sensor 3 is electrically connected to the electric controller. The temperature sensor 3 can be electrically connected to the electric controller through the junction box 6, or can be electrically connected to the electric controller through a wireless communication signal.

[0017] As a preferred embodiment of the present invention, Figure 1 As shown, in the inner cavity of the drum 1 and between the liquid inlets 1-2 and the liquid outlets 1-3, n vertical guide plates 4 arranged at intervals from each other are arranged in sequence, n is an even number and n≥4, and 4 are shown in the figure. Of course, 6, 8 guide plates, etc. can be set according to the size of the drum 1, wherein the first guide plate is adjacent to the organic heat carrier liquid inlets 1-2 and is preferably fixedly connected to the bottom of the inner cavity of the drum 1 by welding, the second guide plate is preferably fixedly connected to the top of the inner cavity of the drum 1 by welding, the third guide plate is preferably fixedly connected to the bottom of the inner cavity of the drum 1 by welding, and so on, the last guide plate is adjacent to the organic heat carrier liquid outlets 1-3 and is preferably fixedly connected to the top of the inner cavity of the drum 1 by welding. During operation, the organic heat carrier flows in the drum 1 in a wave shape, as shown in the figure.

[0018] As a preferred embodiment of the present utility model, the temperature sensor 3 is a contact temperature sensor, and the detection tail end 3-1 of the temperature sensor 3 is fixedly installed on the top surface of the heating pipe section 2-1 of the electric heating pipe 2 at the highest point by means of a pipe clamp 5 or welding or binding or clamping, and the temperature sensor 3 detects the surface temperature of the heating pipe section 2-1 of the electric heating pipe 2.

[0019] As a preferred embodiment of the present invention, the temperature sensor 3 is a thermal resistor temperature sensor, a thermocouple temperature sensor, or a bimetallic temperature sensor.

[0020] As a preferred implementation of the utility model, the electric controller is an industrial computer or an ARM embedded industrial controller or a DDC digital controller with a human-machine interface.

[0021] After trial, the utility model has been found to have a simple structure, is easy to implement, can prevent dry burning and surface coking of the electric heating tube, effectively avoids accidents such as vaporization of the organic heat carrier and explosion of the organic heat carrier furnace, has high safety performance, and has achieved good practical effects.

Claims

1. A safety device for an electrically heated organic heat carrier furnace, the electrically heated organic heat carrier furnace comprising a drum (1) for storing an organic heat carrier, a plurality of electric heating tubes (2) for heating the organic heat carrier, and an electric controller, the drum (1) being arranged horizontally, the left end of the drum (1) being an open end, and the right end being a closed end, a flange (1-1) for closing the open end being provided at the open end of the drum (1), an organic heat carrier liquid inlet (1-2) being provided at the bottom of the left end of the drum (1), and an organic heat carrier liquid outlet (1-3) being provided at the top of the right end of the drum (1), the plurality of electric heating tubes (2) being electrically connected to the electric controller, characterized in that: The heating pipe sections (2-1) of the plurality of electric heating pipes (2) are sequentially passed through the flange plate (1-1) from high to low and are horizontally placed in the drum (1); a temperature sensor (3) is installed on the top surface of the heating pipe section (2-1) of the highest electric heating pipe (2); the temperature sensor (3) is electrically connected to the electric controller.

2. The safety device for the electrically heated organic heat carrier furnace according to claim 1 is characterized in that: In the inner cavity of the drum (1) and between the liquid inlet (1-2) and the liquid outlet (1-3), n guide plates (4) are arranged in sequence vertically and spaced from each other, where n is an even number and n≥4, wherein the first guide plate is adjacent to the organic heat carrier liquid inlet (1-2) and is fixedly connected to the bottom of the inner cavity of the drum (1), the second guide plate is fixedly connected to the top of the inner cavity of the drum (1), the third guide plate is fixedly connected to the bottom of the inner cavity of the drum (1), and so on, and the last guide plate is adjacent to the organic heat carrier liquid outlet (1-3) and is fixedly connected to the top of the inner cavity of the drum (1).

3. The safety device for the electrically heated organic heat carrier furnace according to claim 1 or 2, characterized in that: The temperature sensor (3) is a contact temperature sensor, and the detection tail end (3-1) of the temperature sensor (3) is fixedly mounted on the top surface of the heating pipe section (2-1) of the highest electric heating pipe (2) via a pipe clamp (5) or by welding or binding.

4. The safety device for an electrically heated organic heat carrier furnace according to claim 1 or 2, characterized in that: The temperature sensor (3) is a thermal resistor temperature sensor, a thermocouple temperature sensor, or a bimetallic temperature sensor.

5. The safety device for the electrically heated organic heat carrier furnace according to claim 1 is characterized in that: The electric controller is an industrial computer or an ARM embedded industrial controller or a DDC digital controller with a human-machine interface.

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