WO2015188635A1

WO2015188635A1 - High voltage split oil furnace

Info

Publication number: WO2015188635A1
Application number: PCT/CN2015/072854
Authority: WO
Inventors: 朱建新
Original assignee: 朱建新
Priority date: 2014-06-12
Filing date: 2015-02-12
Publication date: 2015-12-17
Also published as: CN104034038B; CN104034038A

Abstract

A high voltage split oil furnace, comprising a resistance heating component (1), a heat absorption component (2), a heat coupling component (3), an oil spillage adjustment component (4), an air pressure equalizing component (5), and a heat accumulation component (6) all having voltage levels of 2.5 kv to 220 kv and being installed in different housings; the housings (7) of the respective components (1, 2, 3, 4, 5, 6) are provided with standard interfaces (15) directly connected or connected via pipes; the components (1, 2, 3, 4, 5, 6) and the exposed outer surfaces of the connecting pieces are heat insulated by thermal insulating layers; the resistance heating component (1) is immersed in insulating thermal conductive oil (9); the heat absorption component (2) is a heat exchanger provided with a standard interface (15); the heat coupling component (3) is disposed between the resistance heating component (1) and the heat absorption component (2) using water as a heat conducting medium to transfer heat energy; the inert gas in the air pressure equalizing component (5) and the component housing (7) containing the insulating thermal conductive oil (9) form an air pressure equalizing path, making the pressure maintained by the surface of the insulating thermal conductive oil (9) higher than the water pressure in the cavity of the heat absorption component (2).

Description

High voltage split oil furnace

Technical field

The invention relates to a high voltage split oil furnace, in particular to a resistance heating oil furnace with an operating voltage level of 2.5 kV to 220 kV, which is connected by a plurality of different functional components by standard interfaces and combined to complete electrothermal conversion.

Background technique

At present, the heat absorbing component and the resistance heating component of the 2.5kv to 220kv voltage class high power resistance heating oil furnace are generally immersed in the same heat insulating oil in the same casing, and the heat energy generated by the resistance heating component is coupled through the insulating heat conduction oil. It is transmitted to the output of the heat absorbing member. Although this overall combination has the advantages of simple structure and high heat exchange efficiency, it has the disadvantage that when the heat absorbing member that uses water as the heat transfer medium leaks, the water will be directly mixed into the high temperature insulation. In the heat transfer oil, the high temperature insulated heat transfer oil is vaporized, the water vapor raises the pressure inside the casing, and the insulation strength of the insulated heat transfer oil decreases, which affects the normal operation of the equipment; the overall disassembly is required when repairing the faulty equipment, which is time consuming and laborious. Therefore, it is necessary to design a new high voltage resistance heating oil furnace.

Summary of the invention

The present invention provides a high-voltage split oil furnace in view of the above problems in the prior art, in which the heat absorbing member and the resistance heating member are not installed in the same casing, and an insulating heat conduction oil passage is disposed between the heat transfer or the heat conduction is provided. Other heat-coupled components, such as a heat pipe radiator between the oil and the water, transfer the high-voltage electric energy to the heat-dissipating heat-dissipating component through the resistance heating component, and transmit it to the heat-absorbing component of the heat-conducting medium. When the structure of the heat-absorbing component is damaged, When the heat transfer medium water in the cavity leaks, it does not enter the insulating heat transfer oil, and solves the problem that the water existing in the prior art enters the casing, and the insulation strength of the insulating heat transfer oil is lowered.

The technical solution of the present invention is as follows: a high-voltage split oil furnace characterized in that it is a resistance heating component, a heat absorbing component, a thermal coupling component, and a voltage level of 2.5 kV to 220 kV respectively installed in different casings. Oil spill adjusting member, air pressure equalizing member, heat accumulating member; It is equipped with a standard interface so that the components can be directly connected or connected by pipes; the exposed outer surfaces of the components and connectors are insulated by insulation; the resistance heating components are connected by one or three sets of end-insulated bushings as wiring terminals. Metal wire, electrical ceramics, tempered glass, organic and inorganic high temperature resistant, oil resistant insulating materials; heat absorbing parts are heat exchangers equipped with standard interfaces, on one housing with built-in resistance heating parts, connected at the same time one or more a heat absorbing member that satisfies different needs; the heat coupling member is composed of a heat pipe heat sink, and is disposed between the resistance heating member and a heat absorbing member that uses a heat conductive medium to transfer water to prevent water from entering the insulating heat transfer oil; the oil spill adjusting member is sealed The casing, the oil return pump, the filter, the constant pressure safety diaphragm and the diaphragm state sensor are formed. The volume of the sealed casing is a volume for accommodating the maximum dischargeable heat conduction oil of the high voltage split oil furnace; the pressure equalization component passes through the connecting gas pipe and Each component housing with insulating heat transfer oil constitutes a gas equalizing passage, and the insulating and heat conducting oil surface is protected. In the working, the inert gas oxidized by the insulating heat-conducting oil covers and maintains the pressure of the oil surface higher than the pressure of the water in the cavity of the heat-absorbing component; the heat-storing component is composed of the heat storage material and the heat absorbing and heat-dissipating pipe installed inside the heat storage material. .

The air pressure equalization component is composed of a gas cylinder equipped with an inert gas, an air intake regulating valve, an exhaust gas regulating valve, and a gas pressure detecting device.

The resistance heating component, the heat absorbing component, the thermal coupling component, the oil spill regulating component, the air pressure equalizing component, and the heat storage component having a voltage level of 2.5 kV to 220 kV can be matched and used in a high voltage split oil furnace system. It can also be used in part, and parts can be replaced at any time during use.

The insulating heat transfer oil is a thermal energy coupling medium composed of a liquid which satisfies the insulation requirement of the rated working voltage applied by the resistance heating component and can stably transfer the heat energy generated on the resistance heater to the heat absorbing member. Such as vegetable oil, mineral oil, synthetic oil, complex sensitive insulating liquid.

The heat absorbing member is processed into a flat plate type, a spiral plate type, a shell-and-tube type and the like into a form suitable for heat exchange, and the function is divided into a heat absorbing member suitable for hot water output, a heat absorbing member for steam output, and heat. A heat absorbing member for air output and a heat absorbing member for hot oil output.

The heat storage material is composed of a metal oxide having a surface heat storage capacity in a heat storage temperature range or a phase change powder type, a bulk solid, a gel or a liquid material having latent heat storage capacity.

The advantages of the invention are as follows: the high-voltage split oil furnace of the invention is composed of components capable of performing different functions, and is connected by standard interfaces, which facilitates equipment maintenance, increase and decrease of functional components, and flexible change of user oil furnace power and thermal energy output mode. The water enters the insulating heat transfer oil when the cavity of the heat absorbing member of the heat transfer medium is prevented from leaking by using the method of increasing the oil pressure of the insulating heat transfer oil. Increased high voltage and high power heat conduction The reliability of the operation of the oil furnace, the convenience of maintenance, and the flexibility of replacing the thermal energy output mode. In particular, leakage of the resistance heating member caused by water ingress in the insulating heat transfer oil is prevented.

DRAWINGS

1 is a schematic view showing the structure of a high voltage split oil furnace of the present invention.

In the figure, 1, resistance heating component, 2, heat absorbing component, 3, thermal coupling component, 4, oil spill adjustment component, 5, air pressure equalization component, 6, heat storage component, 7, housing, 8, insulating sleeve 9, insulating heat transfer oil, 10, oil return pump, 11, filter, 12, drain valve, 13, oil pressure fixed pressure diaphragm, 14, diaphragm state sensor, 15, standard interface, 16, gas cylinder , 17, pressure reducing valve, 18, intake control valve, 19, exhaust control valve, 20, air pressure detector, 21, air pipe, 22, return pipe, 23, water supply pipe, 24, water, 25, water pump, 26 , oil spill pipe, 27, return pipe.

detailed description

Embodiment 1 The structure of the high-voltage split oil furnace of the present invention is as shown in FIG. 1. The casing 7 is filled with the insulating heat-conducting oil 9 and then charged into the electric resistance heating member 1 to fix the conductive heat-generating metal wire on the insulating structure of the electric resistance heating member 1. The lead-out end is connected with the insulating sleeve 8 to introduce a high-voltage electric energy of 2.5kv to 220kv, so that the conductive heating metal wire is heated, the heat can increase the temperature of the insulating heat-conducting oil 9, and the high-temperature insulating heat-conducting oil 9 transfers the thermal energy to the thermal coupling through a pair of standard interfaces 15. The component 3, the thermal coupling component 3 only absorbs the thermal energy of the high-temperature insulating heat-conducting oil 9, transmits heat energy to the heat-absorbing component 2 through another pair of standard interfaces 15, and the insulating heat-conducting oil 9 is isolated by the thermally-coupled component 3, and exchanges the medium during the heat exchange process. The water 24 does not enter the insulating heat transfer oil 9; the heat energy of the heat absorbing member 2 can be directly output to the heat user through the return pipe 22 of the water supply pipe 23, and the heat pump 25 is activated to store the heat energy in the heat storage member 6 if heat storage is required; Immersed in the insulating heat-conducting oil 9 in the resistance heating part 1, the heat released during operation can expand the volume of the insulating heat-conducting oil 9 , and the expanded portion of the insulating heat-transfer oil 9 flows into the oil-regulating portion through the oil spill pipe 26 The component 4 balances the oil pressure; the housing 7 of the resistance heating member 1 is connected to the air pressure equalizing member by the air pipe 21, and the gas cylinder 16, the pressure reducing valve 17, the intake adjusting valve 18, the exhaust regulating valve 19, and the air pressure in the air pressure equalizing member Under the comprehensive adjustment of the detector 20, the housing 7 of the electric resistance heating component 1 is kept insulated and the oily oil surface is covered by the inert gas which prevents oxidation of the insulating heat conduction oil during operation and maintains the pressure of the oil surface higher than the heat absorbing member. The pressure of the water in the cavity; when the working temperature is lowered, the insulating heat transfer oil in the 9-volume oil spill regulating member 4 is replenished by the oil return pump 10 through the filter 11 Foot; the oil drain valve 12 is used for inspection; the oil pressure constant pressure safety diaphragm 13 diaphragm state sensor 14 is an overpressure safety protection device of the device.

Claims

A high-voltage split oil furnace characterized in that it is a resistance heating component, a heat absorbing component, a thermal coupling component, an oil spill regulating component, and a gas pressure equalization voltage range of 2.5 kV to 220 kV respectively installed in different casings The components and the heat storage components are configured; the components of each component are equipped with standard interfaces so that the components are directly connected or connected by pipes; the exposed outer surfaces of the components and the connecting members are insulated by the heat insulating layer; The group or the three sets of end-connecting insulating sleeves are composed of metal wires, electrical ceramics, tempered glass, organic and inorganic high temperature resistant and oil resistant insulating materials at the terminal of the wiring; the heat absorbing member is a heat exchanger equipped with a standard interface, and is installed in one body. The housing of the resistance heating component is simultaneously connected with one or more heat absorbing components that meet different needs; the thermal coupling component is composed of a heat pipe heat sink, and is disposed between the resistance heating component and the heat absorbing component that uses water as a heat conductive medium to transfer heat energy. To prevent water from entering the insulating heat transfer oil; the oil spill regulating component is a sealed casing, a return oil pump, a filter, a constant pressure safety diaphragm, The diaphragm state sensor is composed of a volume of the sealed casing for accommodating the volume of the high-voltage split oil furnace which can overflow the insulating heat-conducting oil; the gas pressure equalizing component forms a gas equalizing passage through the connecting gas pipe and each component casing containing the insulating heat-conducting oil. Keeping the insulating and heat conducting oil surface covered by an inert gas that prevents oxidation of the insulating heat transfer oil during operation and maintaining the oil surface pressure higher than the pressure of the water in the heat absorbing member cavity; the heat storage member is installed by the heat storage material and inside the heat storage material The endothermic, exothermic pipe is composed.
The high voltage split oil furnace according to claim 1, wherein said air pressure equalizing means comprises a gas cylinder equipped with an inert gas, an intake air regulating valve, an exhaust gas regulating valve, and a gas pressure detecting means.
The high voltage split oil furnace according to claim 1, wherein said resistance heating member having a voltage level of 2.5 kV to 220 kV, a heat absorbing member, a heat coupling member, an oil spill adjusting member, a pressure equalizing member, The heat storage components are matched or used in part in a high voltage split oil furnace system.
The high voltage split oil furnace according to claim 1, wherein said insulating heat transfer oil is a thermal energy coupling medium, which satisfies the rated working voltage insulation requirement applied by the resistance heating member, and can be used on the electric resistance heater. The generated heat energy is stably distributed to the liquid of the heat absorbing member, such as vegetable oil, mineral oil, synthetic oil, and sensitizing insulating liquid.
The high-voltage split oil furnace according to claim 1, wherein the heat absorbing member is processed into a flat plate type, a spiral plate type, and a shell-and-tube type suitable for heat exchange by a metal plate or a metal pipe, and is classified into a suitable one. A heat absorbing member for hot water output, a heat absorbing member for steam output, a heat absorbing member for hot air output, and a heat absorbing member for hot oil output.
The high-voltage split oil furnace according to claim 1, wherein said heat storage material is a metal oxide having surface heat storage capacity in a heat storage temperature range or having latent heat storage capacity. The phase change powder is composed of a bulk solid, a gel, and a liquid material.