RU171694U1 - Electric steam heater - Google Patents

Abstract

The utility model relates to devices for converting electrical energy into heat and creating heat transfer. An electric steam heater contains power units 11 for steam generation (BPO) and superheat (BPP) (Fig. 3), consist of a primary winding 12 connected to the network, a secondary winding 13, ferromagnetic core 14. Secondary windings 13 are located on the specified ferromagnetic core 14. Secondary windings 13 of the BPO and BPP units are made in the form of a tubular conductor with input 15 and output 16 pipes for passing water through the inside ennyuyu cavity conductor 13, conductive surface which is in the form of a closed sided Möbius surface. 3 ill.

Description

The utility model relates to devices for converting electrical energy into heat and creating heat transfer.

Known electric steam heater, which contains an induction steam generator with a secondary winding, a superheater with a secondary winding in the form of a tubular coil, a housing partially filled with evaporated liquid, a ferromagnetic core built into it with a primary winding connected to the network. The secondary windings of the steam generator and superheater are located on the ferromagnetic core, and the secondary winding of the steam generator is made in the form of a closed lattice metal structure, which is partially immersed in the evaporated liquid. (Patent for invention No. 2076468, IPC ⁶ , H05B 6/10, F22B 1/28, F22G 1/16, 1997)

The disadvantage of this device is the bulkiness of the design, the complexity of manufacture, low current density in the secondary winding, which reduces the efficiency of the device.

The objective of the proposed utility model is to increase its energy efficiency and reliability when operating at high currents and strong magnetic fields of 1.5-2 T, which leads to a decrease in electricity consumption for steam generation by 3.5-4 times. The method is confirmed by patent No. 2092445 of 1995.07.04, “Method for influencing the process of water evaporation,” which states that when water is treated with an alternating electromagnetic field with an induction of 0.035 T, the evaporation process is accelerated by 19.4%.

This problem is solved by the fact that in an electric steam heater containing a steam generating unit of the induction steam generator with a secondary winding, a power block of the superheating of an induction steam superheater with a secondary winding, a ferromagnetic core with a primary winding connected to the network, secondary windings of the steam generator and the superheater located on the pointer , the secondary windings of the induction steam generator and induction superheater are made in the form of a tubular wire one with inlet and outlet nozzles for passing water through the inner cavity of the inner conductor, the conductive surface of which is made in the form of a closed one-sided Mobius surface.

The utility model is illustrated by drawings, which show an embodiment of an electric steam heater, the circuit of which includes (Fig. 1 and 2):

Tank 1 for feed water, feed pump 2 with expansion tank 3, control unit 4 with a frequency converter to maintain the required pressure of the feed water, control the pressure of the feed water, control the pressure in the manifold and maintain the required steam pressure in the manifold, a number of vaporization units (BPO ) 5 and steam control units (БУ БПО) 6, a number of steam superheat blocks (БПП) 7 and steam superheat control (БУ БПП) 8, a common collector 9 for steam generation blocks, receiver 10 for creating ace pair in paronagrevatele.

The power blocks 11 of steam generation (BPO) and superheat (BPP) (Fig. 3) consist of a primary winding 12 connected to the network, a secondary winding 13, a ferromagnetic core 14. Secondary windings 13 are located on the specified ferromagnetic core 14.

The secondary windings of 13 BPO and BPP blocks are made in the form of a tubular conductor with inlet 15 and outlet 16 nozzles for passing water through the inner cavity of the conductor 13, the conductive surface of which is made in the form of a closed one-sided Mobius strip.

A large current flowing through a closed coil in the form of a tube makes a strong electromagnet out of a closed coil, so we consider the connection of our closed coil as a connection of two magnets. As you know, magnets are attracted if they are connected by opposite poles. It is worth connecting in our closed coil in the form of a copper tube S with N between the tubes and S with N on the outside of the tubes with a jumper 17, thereby closing the field, and a current of any magnitude will pass through this jumper. The closure of the jumper 17 is provided by screw 18. This connection can be achieved by welding.

The device operates as follows.

Electric steam heater is a flow type. The principle of operation of a steam heater is based on heating water and steam by heat transfer from the secondary windings of power units made in the form of pipes.

Induction steam generator operates as follows.

The feed pump 1 creates an excess pressure of the feed water and it is metered into the steam pipes of the steam generation units 5 (BPO), where it turns into steam with the specified characteristics. The system is automated and provides the required flow rate and steam characteristics, provided that all its elements are technically sound. The feed water pressure is automatically maintained by the feed pump 2 with a frequency converter.

In addition, to ensure the reliability of the vaporization system, the following parameters are controlled: emergency pressure of the feed water, emergency pressure in the collector (pressure of the feed water must be greater than the pressure in the collector by 0.1 MPa). The emergency temperature of the secondary windings of 13 power units of the BPO of the induction steam generator is controlled by the controllers of the steam generation units.

The pressure in the manifold 9 is controlled by the controller of the emergency unit and the initial BPO 4 and is automatically maintained within the specified limits. After reaching the set temperature and steam pressure in the manifold 9, steam is supplied to the consumer.

The pressure, and hence the temperature of the steam, in the steam load is maintained by the controllers of the steam generation units 6 within the specified limits and may vary depending on the type of steam load. Finally, the mode of operation of the steam generator is established after complete heating of the consumer's steam system.

For a smoother operation of the steam system and the creation of a reserve of steam, a steam receiver 10 can be installed.

Superheater works as follows.

If it is necessary to increase the temperature of the steam at a lower pressure, a superheater is used.

The superheater automatically turns on when the steam temperature in the collector or in the load is reached in accordance with the set parameters on the controllers of the БУ БПП 8 unit, and then produces steam heating to the temperature set on its controller. In this case, the capacity of the superheater can automatically change depending on the amount of steam passing through it.

Utility model can be used:

In power engineering - as a working fluid in heat engines - steam-powered plants; as a heat carrier it is used for space heating and water heating.

Construction and construction materials

The use of a steam generator in construction is associated with the requirements for temperature conditions of processes regulated by GOSTs.

- Construction: cleaning reinforcement and sites from ice and snow before pouring concrete, heating the concrete mass in winter.

- Production of ready-mixed concrete: heating sand and gravel, supplying steam both directly to materials and to registers.

For example, in the cold season, achieving the required temperature of the concrete mass is possible only if the material is heated with steam.

- Reinforced concrete plants: steaming in the steaming chambers of reinforced concrete products.

- Production of expanded polystyrene: a steam generator is used during such manufacturing operations as foaming, pre-foaming and sintering.

- Woodworking industry: for drying lumber, including valuable species of wood, such as beech, oak, etc. steam is also used.

- Bitumen, in turn, should be heated even in the summer. Without the use of boilers, it would be impossible to quickly prepare construction sites and fittings, which consists in cleaning them from snow and ice.

- In the drying technique they heat the air in air heaters.

Food industry

- Confectionery: digesters, in which various confectionery masss are cooked, are heated by supplying steam to the steam shirts of the boilers.

- Bakery industry: an electric steam generator is also used to break up the dough and add gloss to the baked goods.

- Meat processing industry: steam is used to defrost meat carcasses in cooking chambers for cooking sausages. In such cases, our steam generators make it possible to maintain the required temperature in the range from 70 to 80 ° C.

- Dairy industry (at dairies): steam allows sterilization of milk and soft drinks and juices - while steam is fed to the heating side of the heat exchange equipment. The steam also sanitizes the pipelines, namely the sterilization of their internal surfaces.

- brewing beer.

- Agriculture: steaming feed in feed tanks, production of granular feed requires the use of steam.

- Cork vacuum packs, heat-shrink labels on food cups.

- Steam remove bird carcasses from feathers; it is used in machines for washing glass containers and units that perform hydro- and heat treatment of cereals.

Claims (1)

An electric steam heater comprising a steam generating unit of an induction steam generator with a secondary winding, a power block of superheating of an induction steam superheater with a secondary winding, a ferromagnetic core with a primary winding connected to the network, secondary windings of the steam generator and superheater located on the indicated ferromagnetic core, characterized in that induction steam generator and induction superheater are made in the form of a tubular conductor with input m and outlet for the water passing through the interior of the inner conductor, the conductive surface of which is in the form of a closed sided Möbius surface.

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