CN201391856Y - Electromagnetic heating steam boiler - Google Patents

Abstract

The utility model relates to an electromagnetic heating steam boiler, which comprises a boiler barrel body, a steam supply pipe, a steam exhaust device, a water inlet device, a blow-down valve and an inspection hole, wherein the steam supply pipe is arranged at the top of the boiler barrel body; the water inlet device is connected to the side face of the lower portion of the boiler barrel body, the other side of the boiler barrel body is connected with the liquid level observation controller, and the water inlet device is characterized in that the outer side below the middle portion of the boiler barrel body is wrapped with an insulating layer, electromagnetic coils are uniformly wound on the insulating layer, magnetic absorption strips are uniformly and vertically distributed on the periphery of the electromagnetic coils, and the electromagnetic coils are connected with the electromagnetic heating controller arranged beside the boiler barrel body. The utility model discloses simple structure, work efficiency is high, has advantages such as energy-conservation, environmental protection.

Description

Electromagnetic heating steam boiler

technical field

The utility model relates to a steam boiler, in particular to an electromagnetic heating steam boiler.

Background technique

At present, small steam boilers are nothing more than oil-fired boilers, gas-fired boilers, coal-fired boilers, and electric heating tube heating boilers, but all of them have shortcomings of one kind or another. First of all, oil-fired, coal-fired, and gas-fired boilers cause serious air pollution, high energy consumption, and many potential safety hazards. Secondly, the electric heating tube heats the boiler, the electric heating tube is easily damaged, and the thermal efficiency is low. Therefore, in view of these situations, a new type of heating boiler with safety, environmental protection and energy saving has been developed.

Utility model content

The technical problem to be solved by the utility model is to provide an electromagnetic heating steam boiler with simple structure, high working efficiency, safety, environmental protection and energy saving.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

Electromagnetic heating steam boiler, including boiler barrel, steam supply pipe, steam exhaust device, water inlet device, sewage valve and inspection hole, the steam supply pipe is arranged on the top of the boiler barrel, and the steam exhaust device is arranged on the boiler barrel On the upper side, the exhaust device includes a pressure observation controller, an exhaust pipe and a safety valve on the exhaust pipe; the water inlet device is connected to the lower side of the boiler barrel, and the water inlet device includes a water inlet pipe 1. A one-way valve, a high-pressure pump and a water purifier arranged on the water inlet pipe. The other side of the boiler barrel is connected to a liquid level observation controller. The outer side of the boiler barrel below the middle is covered with a layer of insulation. An electromagnetic coil is evenly wound on the insulation layer, magnetic strips are uniformly and vertically distributed on the periphery of the electromagnetic coil, and the electromagnetic coil is connected to an electromagnetic heating controller arranged next to the boiler barrel.

The inspection hole is arranged at the bottom of the boiler body, the drain valve is connected to the lower end of the inspection hole, and the lower end of the drain valve is connected to a drain pipe.

The outer side below the middle part of the boiler body of the utility model is covered with a layer of insulation and heat insulation layer. Electromagnetic coils are evenly wound on the insulation and heat insulation layer. Magnetic strips are uniformly and vertically distributed on the periphery of the electromagnetic coils. The electromagnetic heating controller located next to the boiler barrel is connected. Since the electromagnetic heating coil and the boiler barrel are not in direct contact with the boiler of this structure, but are heated by electromagnetic induction, there is no danger of leakage. In addition, using this structure to heat the boiler has two advantages, that is, first, it generates heat evenly from the outside around it to the inside, and the heating area is maximized; second, because there is a heat insulation between the electromagnetic coil and the barrel layer, so the heat of the barrel rarely spreads outward, so its thermal efficiency is extremely high. According to the measurement, the conversion rate of heat efficiency is as high as 95-98%, which is far higher than that of any existing heating structure. The inspection hole is located at the bottom of the boiler barrel, the blowdown valve is connected to the lower end of the inspection hole, and the lower end of the blowdown valve is connected to a blowdown pipe, which can make the blowdown more thorough, as long as the blowdown valve is disassembled during inspection , the barrel can be inspected annually through the inspection hole. The water inlet device of the utility model includes a water inlet pipe, and also includes a one-way valve, a high-pressure pump and a water quality purifier arranged on the water inlet pipe. The pressure observation controller of the utility model can be controlled by an electric contact pressure gauge, and can also be controlled by a more advanced inductive pressure controller. The pressure control in the working principle of the utility model is controlled by the simplest electric contact pressure gauge.

The working principle of the utility model is:

The electromagnetic heater is a device that uses the principle of electromagnetic induction to convert electrical energy into heat energy: inside the electromagnetic heater, the rectifier circuit converts the 50HZ, 380V AC voltage into a DC voltage, and then converts the DC voltage into a frequency of 20-40KHZ high-frequency voltage, the high-speed changing current flowing through the coil will generate a high-speed changing magnetic field. When the magnetic field lines in the magnetic field pass through the magnetic boiler barrel, countless small eddy currents will be generated in the metal body, making the lower half of the barrel It generates heat at high speed by itself, and then heats the medium water inside the barrel, so that the normal water can reach the boiling point immediately. As the steam pressure continues to rise, when the pressure reaches the set upper limit, the upper limit contact of the electric contact pressure gauge will work, and the electromagnetic heating controller will be disconnected through the control circuit; when the steam supply pressure drops to the set lower limit, the electric contact pressure gauge will The lower limit contact works, and the electromagnetic heater is turned on through the control circuit. This cycle goes on and on, so that the steam supply pressure is automatically maintained within a set range. Due to the continuous heating and steam supply, the water level in the boiler barrel gradually decreases. When the water level is lower than the 1/3 position of the barrel body, the water level control circuit turns on the power supply of the high-pressure water pump to allow water to enter the barrel body; when the liquid level rises to the 2/3 position of the barrel body , the water level control circuit cuts off the power supply of the high-pressure water pump. This ensures that the water level in the barrel runs automatically in a safe position all the time. In addition, a safety valve is installed on the upper part of the boiler barrel to ensure safety and reliability. Once the pressure control system fails, the safety valve can be opened automatically, and the fault can be found and eliminated in time!

The utility model has the advantages of simple structure, high working efficiency, energy saving, environmental protection and the like.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Fig. 2 is a schematic cross-sectional structure diagram of a boiler body.

Among them: 1. Boiler barrel, 2. Liquid level observation controller, 3. Steam supply pipe, 4. Inspection hole, 5. Sewage valve, 6. Sewage pipe, 7. Electric contact pressure gauge, 8. Safety valve, 9 , exhaust pipe, 10, one-way valve, 11, high pressure pump, 12, water purifier, 13, water inlet pipe, 14, electromagnetic coil, 15, insulation layer, 16, electromagnetic heating controller, 17, magnetism strip.

Detailed ways

As shown in Figures 1 and 2, the electromagnetic heating steam boiler of the present invention includes a boiler barrel body 1, a steam supply pipe 3, a steam exhaust device, a water inlet device, a blowdown valve 5 and an inspection hole 4, and the steam supply pipe 3 is located at On the top of the boiler body 1, the steam exhaust device is arranged on the upper side of the boiler body 1. The steam exhaust device includes an electric contact pressure gauge 7, an exhaust pipe 9 and a safety valve 8 arranged on the exhaust pipe 9, and a water inlet device Connected to the lower side of the boiler barrel 1, the water inlet device includes a water inlet pipe 13, a one-way valve 10, a high-pressure pump 11 and a water quality purifier 12 arranged on the water inlet pipe 13, and the other side of the boiler barrel 1 is connected to a liquid level Observing the controller 2, the inspection hole 4 is located at the bottom of the boiler body 1, the drain valve 5 is connected to the lower end of the inspection hole 4, and the lower end of the drain valve 5 is connected to a drain pipe 6. Below the middle part of the boiler barrel body 1, there is a layer of insulation and heat insulation layer 15 on the outer side. Electromagnetic coils 14 are evenly wound on the insulation and heat insulation layer 15. Magnetic strips 17 are uniformly and vertically distributed on the periphery of the electromagnetic coil 14. The electromagnetic coils 14 are connected with the boiler. The electromagnetic heating controller 16 next to the barrel body 1 is connected.

Claims (2)

1. Electromagnetic heating steam boiler, including boiler barrel, steam supply pipe, steam exhaust device, water inlet device, sewage valve and inspection hole, the steam supply pipe is set on the top of the boiler barrel, and the steam exhaust device is set on the boiler On the upper side of the barrel, the exhaust device includes a pressure observation controller, an exhaust pipe and a safety valve arranged on the exhaust pipe; the water inlet device is connected to the lower side of the boiler barrel, and the water inlet device includes Water inlet pipe, check valve, high-pressure pump and water quality purifier arranged on the water inlet pipe, the other side of the boiler barrel is connected with a liquid level observation controller, which is characterized in that the outside of the boiler barrel below the middle part is covered with a A layer of insulating and heat-insulating layer. Electromagnetic coils are evenly wound on the insulating and heat-insulating layer. Magnetic strips are uniformly and vertically distributed on the periphery of the electromagnetic coils. The electromagnetic coils are connected to the electromagnetic heating controller located next to the boiler barrel. 2. The electromagnetic heating steam boiler according to claim 1, characterized in that the inspection hole is located at the bottom of the boiler body, the drain valve is connected to the lower end of the inspection hole, and the lower end of the drain valve is connected to a drain pipe.

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