RU169891U1 - STEAM GENERATOR - Google Patents

Abstract

The device allows to increase the productivity of the steam generator while increasing safety. The steam generator contains a housing with inlet and outlet pipes, a phase electrode with a parabolic surface located in the housing on an adjustable rod passing through the dielectric cover of the housing, while the inner working and outer surfaces of the steam generator housing are made of steel sheet between which is placed a non-metallic filling in the form of Muscovite mica; and the outlet pipe is located in the cover of the steam generator. 1 ill.

Description

The utility model relates to the engineering industry and can be used to process blanks on turning and drilling machines.

Known electrode fluid heater [US Pat. No. 2189542 RF, IPC F24J 1/20. Liquid electrode heater / Kharitonov P.T., Mkrtchyan S.R., Ignatov V.D .; applicant and patent holder Kharitonov Pyotr Tikhonovich. - No.2000127009 / 06; declared 10/27/2000; publ. 09/20/2002. 4 sec 4 ill.], Comprising a housing with inlet and outlet nozzles coaxially located in the housing on a dielectric partition in a cavity with a heating fluid, the phase electrode and the lower part of the housing being conical, where the angle of the conical surface of the housing and phase electrode is 10-20 ° . Common with the claimed device are the following features: housing with inlet and outlet nozzles; the presence of a phase electrode and the implementation of the lower part of the body tapering.

The design flaws are increased hydraulic resistance of the passing fluid and insufficient convectivity (turbulence).

Known electric water heater [Pat. No. 13083 Russian Federation, IPC F24H 1/10. Electric water heater / Perfiliev N.I., Bondarev B.N., Perfiliev I.N., Maryashin A.A ..; applicant and patent holder Perfilyev Nikolay Ivanovich. Institute of Communication. - No. 99118123/20; declared 08/16/1999; publ. 03/20/2000. 7 sec 3 ill.], Comprising a housing with inlet and outlet nozzles, a phase electrode arranged coaxially towards each other and mounted with the possibility of reciprocating motion, a conductive rod isolated from the housing, connected to a current source and a phase electrode, inside which a cavity is formed, forming its working surface. The working surface of the phase electrode is placed concentrically to the working surface of the zero electrode formed between

They have annular gaps, the working surface of the zero and phase electrode is made of conical cylinders in the form of concave and convex spheres, and the passing channel of the exhaust pipe is made expanded outward along the liquid. Common with the claimed device are the following features: housing with inlet and outlet nozzles; the presence of a phase electrode and an adjusting rod.

The design is difficult to manufacture and operate, as a result, it has a relatively high cost, poor fluid circulation.

For the prototype adopted the device of the steam generator [US Pat. No. 136136 of the Russian Federation IPC F24H 1/00. Device for producing hot water and steam. / Sviridov I.A., Egorov S.A., Korobov D.V. Applicant and patent holder Ivanovo State Textile Academy. - No. 2013117569/06; declared 04/16/2013. publ. 12/27/2013. 6 sec 1 or.] The device comprises a case with a parabolic part located in the case, a phase electrode with a parabolic working surface, an inlet pipe for water supply, an annular groove on the phase electrode, a neutral wire located on the case, a phase wire connected to a metal threaded sleeve, an adjusting rod of the phase electrode located in the lid insulated from the housing, an outlet branch pipe located in the housing.

The disadvantage of this device is the implementation of the steam generator in the form of an all-metal massive body, which increases the time for receiving steam from the moment the steam generator is turned on due to the large heat loss that goes to heat the body. Also, the housing is not insulated, i.e. It is energized during operation, which poses a danger to the life of the steam generator operator, and the location of the steam outlet in the housing reduces the efficiency of the steam output due to its accumulation under the cover and its subsidence, followed by its transformation back into liquid.

The technical result of the claimed utility model is to increase the productivity of the steam generator while increasing the safety of its operation.

The specified technical result is achieved by the fact that in the steam generator comprising a housing with inlet and outlet pipes, a phase electrode with a parabolic surface located in the housing on an adjustable rod passing through the dielectric cover of the housing, according to a utility model, the inner working and outer surfaces of the steam generator housing are made of steel sheet between which is placed a non-metallic filling in the form of Muscovite mica; and the outlet pipe is located in the cover of the steam generator.

The drawing shows the design of the steam generator in the context.

To compare the inventive steam generator with the prototype, we calculate the time required to produce steam in the steam generator. We determine the time required to produce steam:

where, I is the current between the electrodes 2.5 A, R is the resistance of the interelectrode gap, 100 Ohms, Q is the amount of heat released:

Q = m _in ⋅c _in (t _p -t _c ) + m _in ⋅λ _in + m _k ⋅c _k (t _p -t _k ), J

where, m _in is the mass of water in the interelectrode gap, C _in is the isobaric heat capacity of water, t _p is the steam temperature, t _in is the initial water temperature, λ _in is the latent heat of vaporization, m _to is the mass of the body, C _to is the heat capacity of the body ( steel), t _to - the initial temperature of the housing.

Since the heat capacity of the casing is less than the heat capacity of the heated water, and the thermal diffusivity of the water is lower than the thermal diffusivity of the steel, the casing is heated with water in the gap between the electrode and the casing.

Q ₁ = 0.02⋅4200 (100-20) + 0.02⋅2258200 + 5.5⋅480 (100-20) (J)

Q ₁ = 6720 + 45164 + 211200 = 263,084 J

Then we determine the time required to produce steam in the inventive steam generator. We carry out the calculation of the case of sheet steel with internal filling with mica Muscovite GOST 18096-87.

Q ₂ = 0.02⋅4200 (100-20) + 0.02⋅2258200 + 0.5⋅880 (100-20)

Q ₂ = 6720 + 45164 + 35200 = 87084 J

It can be seen from the calculation that the new housing material can significantly reduce the time for steam production.

Replacing the housing material with sheet steel and mica can significantly reduce heat loss, speed up the process of steam production by 3.5 times, and due to the transfer of the outlet pipe into the lid, the steam output from the steam generator also increased. Due to the fact that mica is an insulating material, the case of the steam generator has become safe for the operator during operation.

The device comprises a housing 1 comprising an inner working 2 and an outer surface made of sheet steel, between which there is a non-metallic filling 3 in the form of Muscovite. A phase electrode 4 is placed in the center of the housing 1, the working surface of which is congruent with the inner working surface 2 of the housing 1. An annular recess 5 is made on the phase electrode 4. The adjustment rod 6 of the phase electrode 4 is fixed in the cover 7, in which the outlet pipe 8. is located. The inlet pipe 9 is located on the outer surface of the housing, the output of which is on the inner surface 2 of the housing 1. In the lid 8 there is a phase wire 10 connected to a metal threaded sleeve 11. On the outer surface of the housing 1 false neutral wire 12.

The device operates as follows. Depending on the temperature of the water entering through the supply pipe 9, with the help of the adjusting rod 6, the distance between the parabolic

the working surface of the housing made of sheet steel 2, and the parabolic working surface of the phase electrode 4. In the extreme lower position of the phase electrode 4 between the working surfaces of the housing 2 and the electrode, a minimum gap is formed at which water is converted to steam when heated. When the phase electrode 4 is shifted by rotation of the adjusting rod 6, the gap increases to the maximum value limited by the threaded part of the adjusting rod 6 of the phase electrode 4, while the water is heated. Cold water flows under pressure from the central water supply system through the inlet pipe 9 to the water heater, rising in the gap between the inner surface of the casing 2 with the parabolic part and the phase electrode 4 with the parabolic working surface, while the volume of liquid from the lower part of the casing to the upper gradually increases, and , getting into the cavity 5, formed by an annular groove on the phase electrode 4, provides vortex formation, which leads to improved heat transfer between the liquid layers. The current flowing between the electrode 4 and the inner surface of the housing 2 through the water heats it, while the non-metallic filling of Muscovit 3, due to its physicochemical properties, does not allow the heat obtained by heating the water to heat the outer part of the housing 1, as a result of which steam is produced significantly faster. The outlet pipe 8, in turn, located in the lid 7, contributes to the complete exit of the resulting steam from the steam generator increasing its efficiency.

Claims (1)

A steam generator comprising a housing with inlet and outlet pipes, a phase electrode with a parabolic surface, located in the housing on an adjustable rod passing through the dielectric cover of the housing, characterized in that the inner working and outer surfaces of the steam generator housing are made of sheet steel between which non-metallic filling is placed in Muscovite mica; and the outlet pipe is located in the cover of the steam generator.

Images