CN202074779U - Electromagnetic energy heat conducting oil heated air circulating low pressure boiler device - Google Patents

Abstract

An electromagnetic energy heat conduction oil hot air circulation low-pressure boiler device, which involves industrial heating, drying and drying equipment, solves the problems of large investment in existing heating equipment, low heat energy utilization, energy consumption and high sewage discharge. The device includes heat conduction oil inside. The boiler tank, the heater for heating the heat transfer oil, the air heating tube placed in the boiler tank and outputting the hot air, the heating equipment using hot air, the exhaust gas purification processor for purifying the exhaust gas discharged from the heating equipment, and the purification The air is sent back to the return air inlet door of the air heating pipe. The heater of the boiler tank of this device adopts an electromagnetic induction heater, which converts electromagnetic energy into thermal energy through the heat conduction oil in the tank, and has the advantages of fast temperature rise, high heat conversion efficiency, wide application range, easy maintenance, and long service life. , In addition, because the hot air circulation structure is adopted in the utility model, it also has the advantages of low investment, energy saving and environmental protection.

Description

An electromagnetic energy heat conduction oil hot air circulation low pressure boiler device

technical field

The utility model relates to an industrial heating, drying and drying equipment, in particular to an industrial electromagnetic energy heat conduction oil hot air circulation low-pressure boiler device.

Background technique

At present, the cleaner production in the industrial field has attracted attention. The so-called cleaner production in the industrial field refers to the need to adopt advanced technology and equipment, use clean energy and materials in industrial production, and aim at energy saving, consumption reduction, pollution reduction, and efficiency increase. , in the production process, it is possible to use energy reasonably, and minimize the harm to human beings and the environment, so as to maximize social and economic benefits.

Today, using clean energy, avoiding environmental pollution, and controlling production costs are the three main factors that affect the development of enterprises.

In industrial drying and drying equipment, such as paint baking room, electrostatic spray plastic aging room, drying room, oven, etc., a heating source is required. Traditional coal, gas, and oil heating source equipment need to be continuously modified and upgraded in order to achieve safety and environmental protection indicators. However, the energy-saving transformation of these equipment is costly and requires a large investment, so the technology upgrade progresses slowly and is currently being phased out.

Existing resistive heating sources (such as electric heating wires, electric heating rods, electric heating coils, etc.) all have the defects of large heat loss, short service life, and difficulty in meeting high temperature requirements.

Traditional industrial small-scale paint-baking rooms (60°C-80°C required), electrostatic spray aging rooms, drying rooms, ovens (180°C-220°C required), and other heating sources are generally coal-fired, oil-fired, and gas-fired flames Heat generation, the combustion heat energy is transferred to the heat-using space through the blast or induced draft fan, and the utilization rate of the heat energy is not high, generally less than 50%. Coal-fired boilers are generally used as the heating source for industrial large-scale paint-baking rooms, drying rooms, and ovens, or oil pipes are arranged in the cavity of coal-fired, oil-fired, and gas-fired boilers. The oil pipes contain organic heat carriers (heat transfer oil). After the flame is heated to the required temperature, a high-power high-temperature pressure oil pump is used to send the heat-conducting oil to the drying room through the delivery pipeline for forced circulation, and then the heat energy carried by the heat-dissipating pipe carrying the heat-conducting oil is transferred to the heating chamber through the induced draft fan. space. These equipments require high investment, long heat transmission pipelines, high heat energy loss, and low heat energy utilization rate. In addition, due to the large amount of sewage discharged by these equipments, the problem of urban environmental pollution is also serious.

Utility model content

The purpose of this utility model is to overcome the problems of large equipment investment, low thermal energy utilization rate, energy consumption and high sewage discharge in the existing heating equipment, and to provide a low investment, energy saving and environmentally friendly electromagnetic energy heat conduction oil hot air Circulating low pressure boiler unit.

The purpose of this utility model is achieved by the following technical solutions:

An electromagnetic energy heat conduction oil hot air circulation low-pressure boiler device, which includes:

The boiler tank body is a cylindrical tank body composed of a round tube and side plates welded to both ends of the round tube. The tank is filled with heat transfer oil. The upper part is equipped with an oil inlet and a safety valve, and the bottom is equipped with an oil discharge valve. The heater is composed of several electromagnetic coils and a high-frequency power supply connected to the electromagnetic coils, and several electromagnetic coils are distributed and pasted on the outer wall surface of the boiler tank to heat the heat-conducting oil;

Several air heating pipes, each air heating pipe is a spiral pipe with flowing air inside, and are intersected with each other in the boiler tank. All the pipe inlets of several air heating pipes are connected in parallel to form an inlet pipe and then connected to an air inlet. , all pipe outlets are connected in parallel to form an outlet pipe and connected to an air outlet, and the air inlet and outlet are respectively welded and fixed to the inlet and outlet holes on the side walls of the boiler tank at both ends, wherein the air inlet passes through the inlet The air duct is connected to a fresh air inlet door, the fresh air inlet door is connected to an air source, the air outlet outputs hot air, and is connected to the first air supply pipe through an air outlet door;

A first induced draft fan, the air inlet of which is connected to the first air supply pipe, and the air outlet is connected to the second air supply pipe;

Heat equipment, which is a closed device, the outer wall is provided with a hot air delivery port connected to the second air supply pipe, and a hot air pipe surrounding the wall and connected to the hot air delivery port is installed inside it, and is evenly distributed inside it. Install several hot air exhausters connected with the hot air pipeline; set a return air layer on the top, and set an air exhaust port on a wall of the heat-using equipment in the air return layer;

The exhaust gas purification processor, its air inlet is connected to the air outlet of the heat-consuming equipment through an exhaust pipe, and its air outlet is connected to a return air pipe;

The return air inlet door is connected with the return air pipe at one end and with the air inlet pipe at the other end.

The boiler tank body is made of carbon steel with a wall thickness of 6mm.

A temperature probe is installed inside the boiler tank, and its temperature signal output line is led out through the temperature detection port on the wall of the round tube.

The high-frequency power supply is an inverter whose input is AC220V/380V, 50HZ commercial frequency power supply, and whose output is 18-30KHZ high-frequency power supply.

The number of the several air heating tubes is at least one, all adopt DN32 copper tubes with a wall thickness of 3.0mm, the inner wall is lined with copper finned strips, and the spiral tube length of each air heating tube is 9 meters , the inner diameters of the spiral pipes of each air heating pipe are either the same or different.

The outlet of the air passage of the hot air exhauster and the air inlet of the air return layer are respectively provided with hot air filter cotton.

A temperature probe and a dehumidifier are also installed in the heat-using equipment, the temperature signal output line of the temperature probe is drawn out through the temperature detection port of the heat-using equipment wall, and the moisture discharged by the dehumidifier passes through the moisture outlet of the heat-consuming equipment wall discharge.

The exhaust gas purification processor adopts a gas purification processor composed of granular activated carbon and PP filter bag.

A second induced draft fan is connected to the pipeline of the returning air pipe, the air inlet of which communicates with the air outlet of the waste gas purification processor, and the air outlet communicates with the return air inlet door.

The outer surface of the boiler tank body and the outer surfaces of the first air supply pipe, the second air supply pipe, the exhaust pipe, the return air pipe and the air inlet pipe are respectively provided with insulation layers.

The beneficial effects of the utility model:

The heater of the boiler tank body in the electromagnetic energy heat conduction oil hot air circulation low pressure boiler device of the utility model adopts an electromagnetic induction heater, which converts electromagnetic energy into thermal energy through the organic heat carrier (heat conduction oil) in the tank body, and has the advantages of fast temperature rise, high thermal It has the advantages of high conversion efficiency, wide application range, easy maintenance, and long service life. In addition, because the utility model adopts the structure of hot air circulation, it also has the advantages of low investment, energy saving, and environmental protection.

In order to further illustrate the above purpose, structural features and effects of the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the structural representation of the electromagnetic energy heat conduction oil hot air circulation low-pressure boiler device of the present utility model;

Fig. 2 is a schematic diagram of a structural embodiment of a plurality of air heating tubes in the utility model;

Fig. 3 is a schematic diagram of the shape of each air heating tube in Fig. 2;

Fig. 4 is the internal structural diagram of the air heating pipe;

Fig. 5 is a schematic diagram of the use of hot air for heating equipment;

Fig. 6 is a schematic diagram of the return air circulation system for purifying the return air by exhausting waste heat with hot air from the heating equipment.

Detailed ways

The specific implementation of the present utility model will be described in detail below in conjunction with the accompanying drawings of the embodiments.

Referring to Fig. 1, the structure of the electromagnetic energy heat conduction oil hot air circulation industrial low-pressure boiler of the present invention is as follows:

The boiler tank 1 is a cylindrical tank composed of a round tube and side plates welded to both ends of the tube. The tank is filled with heat transfer oil 7, and its upper part is provided with an oil inlet 2 and a safety valve 3. The safety valve 3 is an exhaust valve, and the bottom is provided with an oil discharge port 17, and the boiler tank body 1 of the present embodiment is made of carbon steel with a wall thickness of 6 mm. For heat preservation, an insulation layer 13 is provided on the outer surface of the boiler tank body 1 . A temperature probe 5 is installed in the boiler tank 1, and its temperature signal output line is led out of the boiler tank 1 for detection through the temperature detection port 4 of the circular tube wall.

The heater 16 is composed of several electromagnetic coils and a high-frequency power supply connected to the electromagnetic coils. The high-frequency power supply is an industrial frequency power supply with an input of AC220V/380V and 50HZ, and an inverter with an output of 18-30KHZ high-frequency power supply. Several The electromagnetic coils are distributed and pasted on the outer wall surface of the boiler tank 1 , and the heater 16 heats the heat transfer oil 7 in the boiler tank 1 .

Several air heating tubes 6, referring to Fig. 3, each air heating tube 6 is a spiral tube with flowing air inside, placed in the boiler tank 1, and its air inlet 18 and air outlet 8 are respectively arranged on the boiler tank 1 The inlet and outlet holes on the side panels at both ends are welded and fixed, and the air inlet 18 is connected with a fresh air inlet door 19 through the air inlet pipe 15, and the fresh air inlet door 19 is connected with an air source 20. The air outlet 8 is connected to the first air supply pipe 10 through an air outlet door 9, and the flowing air in the air heating pipe 6 absorbs the heat of the heat transfer oil 7 in the boiler tank 1 to become hot air, so the first air supply pipe 10 It is a hot air output pipe that provides hot air. Referring to Fig. 3-Fig. 4, in order to accumulate more heat in the heat conduction oil 7 in the tank in the air heating tube 6, a copper finned strip 601 is lined on the inner wall of the air heating tube 6, and the finned strip 601 is firstly removed during processing. 601 is inserted into the air heating tube blank straight tube (copper tube), and then the air heating tube blank straight tube lined with fin strips 601 is bent and coiled into a spiral shape. The number of the several air heating tubes 6 is at least one, and the air heating tube 6 shown in Fig. 1 adopts one, which is a DN32 copper tube with a wall thickness of 3.0 mm and a spiral tube length of 9 meters. As another example, referring to Fig. 2, in order to accumulate more heat of the heat transfer oil 7 in the boiler tank 1 in the air heating pipe 6, four air heating pipes 6 are used, respectively marked 61, 61 in Fig. 2 62, 63, and 64 are all made of DN32 copper tubes with a wall thickness of 3.0mm. Each spiral tube is 9 meters long and is nested in the boiler tank 1. The inner diameters of the spiral tubes of each air heating tube are or are the same. Or different, as shown in Figure 2, wherein the inner diameters of the spiral pipes of the air heating pipes 61, 62 are respectively 500mm, the inner diameters of the spiral pipes of the air heating pipes 63, 64 are respectively 400mm, and the four air heating pipes 61, 62, 63 The pipeline inlets of , 64 are connected in parallel to form an inlet pipeline 651 and then connected to the air inlet 18, and the pipeline outlets of the four air heating pipes 61, 62, 63, 64 are connected in parallel to form an outlet pipeline 652 and then connected to the air outlet 8 Pass.

During installation, the above-mentioned air heating tube 6 is first placed in the round tube of the boiler tank 1, and the inlet and outlet holes of the air heating tube 6 are pre-opened on the two end side plates of the boiler tank 1, and the air inlet 18 of the air heating tube 6 is and the air outlet 8 are respectively welded and fixed to the inlet and outlet holes of the plate walls on both sides of the boiler tank body 1;

The air inlet of the first induced draft fan 11 is connected to the first air supply pipe 10 , and its air outlet is connected to the second air supply pipe 12 , and the second air supply pipe 12 is connected to the hot air delivery port 14 provided by the heating device 100 . Since hot air is delivered in the first air supply pipe 10 and the second air supply pipe 12 , thermal insulation layers 13 are provided on the outer surfaces of the first air supply pipe 11 and the second air supply pipe 12 respectively.

Heat equipment 100, referring to Fig. 5-shown in Fig. 6 at the same time, it is a closed place or equipment (industrial use paint room, electrostatic spray plastic aging room, drying room, oven, drying tunnel and other equipment), the outer wall is provided with and described The hot-blast delivery port 14 that the second air-supply pipe 12 is connected installs a hot-blast pipeline 101 that goes around the wall and communicates with the hot-blast delivery port 14 in the heating equipment 100, and several hot-blast discharges are evenly installed in the heating equipment 100 Each hot air exhauster 102 communicates with the hot air duct 101, and the outlet of the air channel 1021 of the hot air exhauster 102 in this embodiment is provided with a hot air filter cotton 1022 to clean the hot air. The top of the heating equipment 100 is provided with a return air layer 105, the air inlet of the return air layer 105 is provided with a hot air filter cotton 1051, and a wall of the heating equipment 100 in the return air layer 105 is provided with an air outlet 21. A temperature probe 103 is also arranged in the heat-using equipment 100, and its temperature signal output line is drawn out of the heat-using equipment 100 through the temperature detection port 1031 on the wall of the heat-using equipment for detection. A humidifier 104 is also provided in the heat-using equipment 100 , and the moisture discharged by it is discharged out of the heat-using equipment 100 through the moisture outlet 1041 on the wall of the heat-using equipment.

Exhaust gas purification processor 27, the present embodiment adopts the gas purification processor that granular activated carbon and PP filter bag are formed, absorbs the peculiar smell of exhaust air and filters the impurity in the exhaust air, dust, and its air inlet passes through an exhaust air The pipe 22 is connected to the air outlet 21 of the heat-using equipment 100 , and its air outlet (outputting purified gas) is connected to a return air pipe 24 .

Return air inlet door 25, one end of which is connected to the return air pipe 24, and the other end is connected to the air inlet pipe 15, and the exhaust gas discharged from the heating equipment 100 is purified and sent back to the air heating pipe 6 to form Hot air circulation system.

The second induced draft fan 27 is sent back in the air heating pipe 6 for accelerating the return air, and a second induced draft fan 27 can be connected in the pipeline of the above-mentioned return air pipe 24, and its air inlet is connected with the outlet of the exhaust gas purification processor 27. The air port is communicated, and its air outlet is communicated with the return air inlet door 25 .

For heat preservation, the outer surfaces of the above-mentioned exhaust pipe 22 , the return air pipe 24 and the air inlet pipe 15 are respectively provided with an insulating layer 13 .

Those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the purpose of the utility model, rather than as a limitation of the utility model, as long as within the essential scope of the utility model, the above-mentioned The changes and modifications of the above embodiments will fall within the scope of the claims of the present utility model.

Claims (10)

1. An electromagnetic energy heat transfer oil hot air circulation low-pressure boiler device, characterized in that it comprises: The boiler tank (1) is a cylindrical tank composed of a round tube and side plates welded to both ends of the round tube. The tank is filled with heat transfer oil (7), and its upper part is provided with an oil inlet (2) and a The safety valve (3) is provided with an oil discharge port (17) at the bottom; The heater (16) is composed of several electromagnetic coils and a high-frequency power supply connected to the electromagnetic coils, and the several electromagnetic coils are distributed and attached to the outer wall surface of the boiler tank (1) to heat the heat transfer oil (7) ; Several air heating pipes (6), each air heating pipe (6) is a spiral pipe with flowing air inside, and are intersected with each other in the boiler tank (1), all the pipes of the several air heating pipes (6) The inlets are connected in parallel to form an inlet pipe (651) and connected to an air inlet (18), and all pipe outlets are connected in parallel to form an outlet pipe (652) to be connected to an air outlet (8). The air inlet (18) and The air outlets (8) are respectively welded and fixed to the inlet and outlet holes arranged on the side panels at both ends of the boiler tank (1), wherein the air inlet (18) passes through the air inlet pipe (15) and a fresh air inlet door (19) Connect, the fresh air inlet door (19) is connected with an air source (20), and the air outlet (8) outputs hot air, and connects the first air supply pipe (10) through an outlet door (9); A first induced draft fan (11), the air inlet of which is connected to the first air supply pipe (10), and the air outlet is connected to the second air supply pipe (12); Heat equipment (100), which is a closed place or equipment, is provided with a hot air delivery port (14) connected to the second air supply pipe (12) on the outer wall, and a hot air delivery port (14) around the wall is installed inside it and delivered to the hot air. The hot air duct (101) connected with the opening (14), and several hot air dischargers (102) connected with the hot air duct (101) are evenly installed inside it; An air exhaust port (21) is provided on a wall of the thermal equipment (100) located in the air return layer (105); The exhaust gas purification processor (27), its air inlet is connected with the air outlet (21) of the heat-using equipment (100) through an exhaust pipe (22), and its air outlet is connected with a return air pipe ( twenty four); The return air inlet door (25) is connected with the return air pipe (24) at one end and connected with the air inlet pipe (15) at the other end. 2. The electromagnetic energy heat conduction oil hot air circulation low-pressure boiler device as claimed in claim 1, characterized in that: The boiler tank body (1) is made of carbon steel with a wall thickness of 6mm. 3. The electromagnetic energy heat conduction oil hot air circulation low-pressure boiler device as claimed in claim 1, characterized in that: A temperature probe (5) is arranged inside the boiler tank body (1), and its temperature signal output line is led out through the temperature detection port (4) on the wall of the circular tube. 4. The electromagnetic energy heat conduction oil hot air circulation low-pressure boiler device as claimed in claim 1, characterized in that: The high-frequency power supply is an inverter whose input is AC220V/380V, 50HZ commercial frequency power supply, and whose output is 18-30KHZ high-frequency power supply. 5. The electromagnetic energy heat conduction oil hot air circulation low-pressure boiler device as claimed in claim 1, characterized in that: The number of the several air heating tubes (6) is at least one, all adopting DN32 copper tubes with a wall thickness of 3.0mm, the inner wall is lined with copper finned strips (601), and each air heating tube (6 ) is 9 meters long, and the inner diameters of the spiral pipes of the air heating pipes are either the same or different. 6. The electromagnetic energy heat conduction oil hot air circulation low-pressure boiler device as claimed in claim 1, characterized in that: The outlet of the air channel (1021) of the hot air exhauster (102) and the air inlet of the air return layer (105) are respectively provided with hot air filter cotton. 7. The electromagnetic energy heat transfer oil hot air circulation low-pressure boiler device as claimed in claim 1, characterized in that: A temperature probe (103) and a dehumidifier (104) are also arranged in the heat-using equipment (100), and the temperature signal output line of the temperature probe (103) is drawn through the temperature detection port (1031) on the wall of the heat-using equipment, and the dehumidification The moisture discharged from the device (104) is discharged through the moisture discharge port (1041) on the wall of the thermal equipment. 8. The electromagnetic energy heat transfer oil hot air circulation low-pressure boiler device as claimed in claim 1, characterized in that: The exhaust gas purification processor (27) adopts a gas purification processor composed of granular activated carbon and a PP filter bag. 9. The electromagnetic energy heat transfer oil hot air circulation low-pressure boiler device as claimed in claim 1, characterized in that: A second induced draft fan (27) is connected to the pipeline of the return air pipe (24), its air inlet is connected with the air outlet of the waste gas purification processor (27), and its air outlet is connected with the return air inlet. Damper (25) is connected. 10. The electromagnetic energy heat transfer oil hot air circulation low-pressure boiler device as claimed in claim 1, characterized in that: The outer surface of the boiler tank (1) and the first air supply pipe (10), the second air supply pipe (12), the exhaust pipe (22), the return air pipe (24), the air inlet pipe ( 15) are respectively provided with insulation layers (13) on the outer surface.

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