26 results about "Steam accumulator" patented technology

The invention relates to the technical field of rocket launching, in particular to a steam protection rocket launching system which comprises a steam energy storage system, a steam conveying system, a steam releasing system and a launching rack structure. The steam energy storage system comprises a steam boiler, a steam pressure accumulator and a steam energy storage control unit and is used for preparing and storing high-pressure steam before rocket launching. The steam conveying system comprises a steam blending table and a steam supply pipeline and is used for conveying high-pressure steam in the steam pressure accumulator to the steam release system; the steam release system comprises a steam injection unit and a steam injection control system and is used for releasing steam when the rocket is ignited, launched or recovered, forming a steam protection air curtain and reducing thermal shock of high-temperature airflow on the structure. By establishing the high-pressure steam protection air curtain, active protection of structural parts, pipeline parts, hydraulic parts and other parts of the rocket launching system influenced by the gas tail flame area of the rocket engine is achieved, and the durability and reliability of the launching system are improved.

The invention relates to the technical field of waste water evaporation drying, in particular to a waste water evaporation drying method and system based on mixed molten salt heat storage, and the system comprises a light condensing and guiding unit, a molten salt heat storage unit, a heat exchange circulation unit and an evaporation drying unit; the light condensing and guiding unit comprises a Fresnel lens and a quartz glass guide tube; the fused salt heat storage unit comprises a fused salt heat storage tank and a fused salt pump, and mixed fused salt is arranged in the fused salt heat storage tank; the heat exchange circulating unit comprises a fused salt steam heat exchanger, a steam heat accumulator, a waste steam tank, a desalted water storage tank, a waste steam water circulating pump, a desalted water feeding pump and a condenser; the evaporation drying unit comprises an evaporation dryer and an evaporation condensate storage tank, the evaporation dryer is communicated with the steam heat accumulator, and the evaporation condensate storage tank is connected with the condenser. The Fresnel lens and the quartz glass guide pipe are combined for light gathering and light guiding, precise tracking and efficient collection of sunlight are achieved in cooperation with the solar tracker, and the heat conduction efficiency is greatly improved.

The invention relates to the technical field of steam heat accumulators, in particular to a steam heat accumulator with high heat exchange efficiency, which comprises a heat accumulator outer cabin, a heat insulation assembly arranged in the heat accumulator outer cabin, and a liquid exchange mechanism arranged at the bottom of the heat insulation assembly, the air exchange mechanism is arranged at the top of the heat insulation assembly; the heat exchange assemblies are mounted in the liquid exchange mechanism and the air exchange mechanism; the heat accumulator outer cabin comprises a steam input pipe used for inputting high-temperature steam flow. An existing mode that heat exchange is conducted through outflow along fins of the heat exchanger is set into a built-in circulation heat exchange mode, the heat exchange assembly of a double-cavity structure is communicated with the liquid exchange assembly and the air exchange assembly, and after high-temperature steam flow enters an inner cavity of the heat exchange assembly along the air exchange assembly, the steam can be divided into multiple strands to sufficiently supply heat to a liquid storage part; therefore, heat energy loss caused by temperature difference inside and outside the outer cabin of the heat accumulator can be avoided by the concentrated circulating steam flow.

The invention provides a heat storage method of a fused salt coupling steam energy accumulator full-energy heat storage technology, and belongs to the technical field of steam energy storage and energy storage flexibility. Based on a heat storage system, the heat storage system comprises a fused salt heat storage system, a steam energy accumulator heat storage system and a heat storage control system; the heat storage control system comprises a steam supply pipeline, a first adjusting valve group, a second adjusting valve group and a third adjusting valve group, in the heat storage method, when the steam energy accumulator stores heat to be full before the high-temperature molten salt tank, the second adjusting valve group is opened, and steam flowing out of the heat storage medium passage is used for industrial steam supply; when the high-temperature molten salt tank is filled with heat before the steam energy accumulator, the third regulating valve group is opened to supply a cold medium to the desuperheater to cool the steam which is about to enter the steam energy accumulator; high-grade sensible heat, low-grade sensible heat and all latent heat of steam heat energy can be fully utilized, the energy utilization rate is increased, regulation and control of the heat storage system are more flexible, and meanwhile economic benefits are increased.

The present application relates to a kind of steam accumulator-based thermal power unit peak shaving system and peak shaving method, including steam turbine, the boiler of steam to steam turbine delivery, and the feedwater assembly of water to boiler to form steam;The boiler includes main steam pipe and reheat steam pipe;The feedwater assembly includes water supply component and heating component, and the heating component is used to heat the water of water supply component inside delivery using the steam extraction of the steam turbine;The thermal power unit peak shaving system further includes steam storage system, and the steam storage system includes steam accumulator, and the steam input end of the steam accumulator is connected with the main steam pipe, and the steam output end of the steam accumulator is connected with at least the heating component, and specifically meet the advantage of unit rapid peak shaving.

The utility model relates to the technical field of steam energy storage equipment, in particular to a vertical steam heat accumulator, which is characterized in that water flows around a plurality of groups of steam circulating barrels and high-pressure nozzles to form three circulating and stirring water spaces, so that the effect of uniformly heating the water is realized, the occupied area is reduced, the steam use effect is improved, and the maintenance convenience is improved. Comprising an upper seal head, a cylinder and a lower seal head, the upper seal head is mounted at the top end of the cylinder, and the lower seal head is mounted at the bottom end of the cylinder; the air outlet is communicated with the upper part of the cylinder body, the air inlet and the water inlet are respectively communicated with the lower part of the cylinder body, the multiple groups of steam circulating barrels are arranged on the inner side wall of the cylinder body, and the air inlet is communicated with the multiple groups of steam circulating barrels; the steam circulating barrel is provided with a high-pressure nozzle which is inclined upwards by 45 degrees, and the standby measuring port is arranged on the barrel body in a communicating mode.

The invention discloses a steam heat storage device and relates to the field of heat storage equipment, the steam heat storage device comprises a liquid storage tank, an opening is formed in the top of the liquid storage tank, the steam heat storage device further comprises a main supporting pipe, an auxiliary supporting pipe and a plurality of steam generators, a flow guide part of the main supporting pipe penetrates through the opening, and a flow guide part of the auxiliary supporting pipe penetrates through the opening; the main body part of the main supporting pipe is arranged in the liquid storage tank, and the flow guide part is communicated with the main body part; the length direction of the main body part is consistent with the height direction of the liquid storage tank; the auxiliary supporting pipe is communicated with the main supporting pipe, and the length direction of the auxiliary supporting pipe is consistent with the radial direction of the liquid storage tank; the multiple steam generators are distributed on the auxiliary supporting pipe in the length direction of the auxiliary supporting pipe and communicate with the auxiliary supporting pipe. The device has the advantages of improving the temperature rise uniformity and improving the total heat efficiency of the device.

The invention discloses a heat storage system coupled with a multi-stage steam heat accumulator and an operation method of the heat storage system, and belongs to the technical field of heat energy storage. The heat storage system coupled with the multi-stage steam heat accumulator comprises a boiler, a steam turbine system, a high-pressure steam heat accumulator, a low-pressure steam heat accumulator and a valve assembly, steam and hot water are adopted as heat storage media, and heat energy is directly stored and released through the high-pressure steam heat accumulator and the low-pressure steam heat accumulator; the indirect heat exchange process of media such as fused salt is omitted, heat energy is released back to a steam turbine system through the coupling relation of the high-pressure steam heat accumulator, the low-pressure steam heat accumulator and the steam turbine system and used for assisting the short-time frequent peak and frequency regulation work of a coal-fired power unit, and the dynamic response capacity of the coal-fired power unit is improved; in actual operation, the operation mode of the heat storage system can be flexibly changed according to the load change of the power grid and the operation state of the coal-fired power generation unit.

The invention provides a flexible frequency modulation and peak regulation system and method for internal and external energy storage combination of an industrial heat supply unit, and relates to the field of thermal power generation and power grid auxiliary service. The system is mainly composed of a core equipment module, a steam extraction adjusting system, a rapid frequency modulation system and a control system. A steam energy accumulator provided with an electric heating device is additionally arranged, a three-stage frequency-division adjusting mechanism in which short-time valve fine adjustment, medium and short-time heat supply network heat storage cooperation and medium and long-time steam energy accumulators participate are constructed, and technologies such as cooperative steam extraction adjustment and high-pressure heating steam extraction throttling are adopted, so that the internal and external energy storage potential of an excavator unit is fully utilized. The system can adapt to the frequency modulation and peak regulation requirements of different time lengths and different climbing rates, the response speed, the regulation precision and the deep peak regulation capacity of the unit under the low load are remarkably improved on the premise that the industrial steam supply stability is guaranteed, thermoelectric decoupling and multi-means collaborative optimization are achieved, and the unit operation flexibility and the power grid adaptability are improved.

The invention relates to the technical field of heat supply, in particular to a steam heat supply pipe network pressurization system and an operation method thereof.The pressurization system comprises a renewable energy power supply module, a compression transmission module and a control module; the compression transmission module comprises a steam input pipeline, a first branch, a second branch, a motor, a steam compressor, a first ejector, a steam output pipeline and a steam energy accumulator; the motor is respectively connected with the renewable energy power supply module and the mains supply; the control module comprises a control system, a control valve, a thermometer and a pressure gauge; the operation method comprises the steps that the steam energy accumulator is charged, and the steam energy accumulator releases steam. After the technical scheme is adopted, by arranging the renewable energy source power supply module, the compression transmission module and the control module, renewable energy sources can be cooperatively utilized for power supply, so that the occupied space of the steam energy accumulator is relatively small, and the heat supply stability is relatively high.

The invention discloses a peak shaving system based on steam heat storage and fused salt heat storage and an operation method. According to the peak shaving system, one end of a main steam pipeline is connected with a steam turbine generator unit, the other end of the main steam pipeline is connected with the input end of a first temperature and pressure reducing device, and the output end of the first temperature and pressure reducing device is connected with the input end of a steam heat accumulator; the steam output end of the steam heat accumulator is connected with the steam input end of the fused salt heat storage device, and the saturated water output end of the steam heat accumulator is connected with the saturated water input end of the fused salt heat storage device; during heat storage peak regulation, steam heat storage and fused salt electric heat storage are used for reducing the power capability of a steam turbine and the on-grid power of a generator at the same time, and during heat release peak, through the combination of the steam heat accumulator and the fused salt heat storage subsystem, the steam heat accumulator provides saturated steam, the saturated steam is heated into superheated steam, and the superheated steam is stored in the fused salt heat storage subsystem. And superheated steam and / or steam quantity of various qualities can be provided under the same fused salt heat storage quantity, so that the electric and thermal load operation domain of the unit is further widened.

The invention discloses a weighing-based water level measuring device and method for a steam heat accumulator, and relates to the technical field of heat accumulation equipment and steam boilers, the device is provided with a plurality of weighing sensors or pressure sensors at the bottom of a heat accumulator support column for acquiring the total weight of a spherical tank in real time, and the total weight of the spherical tank is measured by combining the internal real-time temperature and pressure parameters. And establishing a mathematical model to reversely deduce the liquid level height. By analyzing the relation between the geometric volume and the mass of water in the spherical container, the real water level can still be accurately obtained under the condition of boiling or violent fluctuation. The device has the advantages of being simple in structure, stable in measurement, suitable for high-temperature and high-pressure environments and the like, and is particularly suitable for accurate liquid level monitoring scenes of steam heat storage equipment.

The application discloses a kind of based on thermochemical energy storage's Carnot cell system and method, including electric drive thermochemical energy storage reactor, steam turbine, generator set, condenser, high-pressure pump, steam accumulator;Steam turbine is connected with generator set, steam turbine is driven by the steam generated by electric drive thermochemical energy storage reactor, and steam turbine drives generator set to generate electricity again;Steam accumulator is connected with the steam passage in electric drive thermochemical energy storage reactor, for storing or providing the steam of reaction;High-pressure pump is connected with the tubular heater in electric drive thermochemical energy storage reactor, and the steam generated by steam turbine is condensed into circulating working medium water by condenser, and is sent back to electric drive thermochemical energy storage reactor by high-pressure pump and circulates to work.The reaction device of the application is compact, and electric energy is efficiently converted into heat energy, and is further converted into chemical energy in the form of chemical reaction heat to store.

The utility model discloses a solid crystal material drying device, which comprises a drying machine and further comprises a steam energy storage device assembly, a solid crystal material drying device, a liquid crystal material drying device, a liquid crystal material drying device, a liquid crystal material drying device, a liquid crystal material drying device and a liquid crystal material drying device, wherein the steam energy storage device assembly is used for circularly providing heat energy for the drying machine; the steam supply assembly provides steam for the steam energy accumulator assembly, and the steam supply assembly is connected with the steam energy accumulator assembly; the air extraction assembly is used for extracting air from the drying machine and is connected with the drying machine; the dehumidification assembly is used for dehumidifying the solid crystal materials and is connected with the drying machine, and the solid crystal materials in the dehumidification assembly are input into the drying machine when the drying machine is sucked by the air suction assembly; the controller is connected with the drying machine, the steam energy accumulator assembly, the steam supply assembly and the dehumidification assembly. The utility model has the advantage of simple structure.

The invention relates to the technical field of thermal power generation, in particular to a coal-fired unit flue gas side coupling compressed air energy storage system and method. In the energy storage stage, a first valve is opened, a second valve is closed, a motor drives a first air compressor and a second air compressor to compress air, generated high-pressure air flows through a first heat exchanger and a second heat exchanger and then enters an air storage tank, compression heat in the process is recycled into a steam turbine regenerative system, and more extracted steam is saved to do work in a steam turbine; and the third valve and the fourth valve are opened, the fifth valve and the sixth valve are closed, low-temperature heat conduction oil in the cold heat conduction oil storage tank is used for absorbing flue gas waste heat and steam heat and then storing the flue gas waste heat and the steam heat in the hot heat conduction oil storage tank, and high-temperature steam obtained after heat exchange enters the steam energy accumulator to be stored. The total efficiency of the coupling compressed air energy storage system on the flue gas side of the coal-fired unit can be improved, and meanwhile rapid and flexible peak regulation of the unit is achieved.

The utility model provides a steam storage device. The steam storage device comprises a storage tank, a buffer flow guide cover, a steam homogenizing plate and a steam purification layer, the top of the storage tank is provided with a steam inlet and a safety valve port, the upper end of the side wall is symmetrically provided with two dry steam outlets, and the bottom is provided with a liquid outlet; the buffer flow guide cover is suspended in an inner cavity of the storage tank and comprises a vertically-through cover shell and a vertical spiral flow guide piece, and the top of the cover shell is fixed to the inner wall of the storage tank and communicated with the steam inlet; the steam uniformizing plate is circumferentially arranged around the outer side wall of the housing, the outer edge is connected with the inner wall of the tank body, and a plurality of steam holes are distributed in the steam uniformizing plate; the steam purification layer is located above the steam homogenizing plate and circumferentially arranged around the outer side wall of the housing, the outer edge of the steam purification layer is connected with the inner wall of the tank body, and the steam purification layer is used for separating liquid in steam; the area defined by the upper portion of the steam purification layer, the inner wall of the storage tank and the outer side wall of the housing is a dry steam area and communicates with the dry steam outlet. According to the steam storage device, local impact of steam can be avoided, safety and stability are good, and high-dryness steam output can be achieved.

The application discloses a nuclear power plant steam extraction heat supply system with a steam heat accumulator, comprising a power generation module, a steam extraction module, a heat supply module and a heat accumulator module: a steam generator is connected with a high-pressure cylinder, a low-pressure cylinder and a condenser in sequence; the low-pressure cylinder is connected with a generator; a steam extraction inlet is connected with a steam pipeline between the high-pressure cylinder and the low-pressure cylinder; a first steam extraction outlet and a second steam extraction outlet are connected with a first steam inlet, the second steam extraction outlet is connected with a second steam inlet, a steam outlet of the low-pressure cylinder and the first steam extraction outlet are connected with a steam inlet of the condenser, a condensate outlet of the condenser is connected with an inlet of a feed water pump through a water extraction port, and an outlet of the feed water pump is connected with a second water inlet. The application uses condenser warm drainage as the water inlet of the steam heat accumulator, can enhance the flexibility of the nuclear power plant heat supply, improve the upper limit of the heat supply capacity, improve the heat utilization efficiency of the reactor and prolong the service life of the steam heat accumulator under the premise of no adjustment of the steam extraction amount and stable power operation of the reactor.

The invention belongs to the related technical field of industrial steam supply, and discloses a combined heat and power generation system based on coupling of a steam energy accumulator and an ejector and a steam supply method. The combined heat and power generation system comprises a coal-fired boiler, a first fused salt steam heat exchanger, a steam energy accumulator, a first control valve, a steam ejector, a second fused salt steam heat exchanger, a first fused salt pump, a cold fused salt storage tank, a second control valve, a second fused salt pump, a hot fused salt storage tank and a third control valve. According to the combined heat and power generation system, the steam energy accumulator and the steam ejector are cooperatively coupled, so that the system can stably output industrial steam meeting parameter requirements under different operation load conditions, flexible operation of the combined heat and power generation system is guaranteed on the premise of not interrupting industrial steam consumption, and the service life of the combined heat and power generation system is prolonged. The invention further provides an efficient and stable industrial steam supply method.

The invention relates to the technical field of energy storage and recycling, in particular to steam heat storage equipment which comprises an outer cylinder and an inner cylinder longitudinally and movably sleeved with the outer cylinder, a steam containing bin is arranged in the inner cylinder, a top cover is connected to the upper portion of the inner cylinder, a power lifting seat is connected to the lower portion of the inner cylinder, and a magnetic intermittent generation ring is arranged in the power lifting seat. The center of the steam containing bin is upwards communicated with a steam inlet pipe; the bottom end of the steam inlet pipe is connected with an impeller bin, the centers of the steam inlet pipe and the impeller bin are connected with a steam inlet rotating rod, the lower part of the steam inlet rotating rod extends out of the impeller bin and the periphery is connected with a conical spiral steam outlet strip, and the bottom of the conical spiral steam outlet strip is connected with a stretching magnetic ring; the impeller bin is connected with a static impeller, the steam inlet rotating rod is connected with a movable impeller, and a steam conveying channel is arranged from the steam inlet pipe to the upper surface of the conical spiral steam outlet strip. According to the scheme, steam and saturated water are fully mixed, heat exchange and dispersion are balanced, the internal temperature gradient is small, and steam is fully condensed and releases latent heat; and rapid deployment of equipment and efficient loading and unloading of the thermal insulation layer are also realized.

The utility model discloses a kind of high-efficiency waste heat resource utilization devices for steam turbine generator unit, it is related to steam turbine generator technology field, including boiler and steam accumulator, one end of steam accumulator is fixedly connected with steam turbine, the bottom of boiler is fixedly connected with flue gas duct, one end of steam turbine is fixedly connected with condenser, one end of condenser is fixedly connected with waste gas recovery device, the top of waste gas recovery device is provided with auxiliary generator.The utility model of a kind of high-efficiency waste heat resource utilization devices for steam turbine generator unit, in the process of reciprocating rotation of transmission gear, by rotating shaft, auxiliary generator generates electricity, and electrical energy is stored in the inside of energy storage equipment, waste gas is recycled, improve the waste heat recovery efficiency of steam turbine generator set;Water pipe and heat exchange plate are kept warm, avoid condensate in the process of backflow cooling, utilize the remaining flue gas waste heat, and then reduce the power consumption of subsequent low-pressure heater.

The present application relates to a kind of steam energy storage-based thermal power unit peak shaving system and peak shaving method, including steam turbine, boiler and feedwater component, the boiler includes main steam pipe and reheat steam pipe;The feedwater component includes water supply component and heating component;The thermal power unit peak shaving system further includes steam heat storage system, and the steam heat storage system includes steam input component, high-pressure steam accumulator and low-pressure steam accumulator;The input end of the steam input component is at least connected with the output end of the main steam pipe, one of the output end of the steam input component is connected with the input end of the high-pressure steam accumulator, and the other output end is connected with the output end of the low-pressure steam accumulator;The output end of the high-pressure steam accumulator is connected with the heating component, and the output end of the low-pressure steam accumulator is at least connected with the steam input end of the low-pressure cylinder, with the advantages of low modification cost, quick peak shaving response and wide peak shaving range.

The invention relates to the technical field of steam utilization, in particular to a steam heat accumulator with a built-in heat exchanger, comprising a steam storage mechanism, a liquid storage heat exchange mechanism mounted on the steam storage mechanism and a quantitative liquid feeding mechanism mounted on the steam storage mechanism; the steam storage mechanism comprises a transversely-arranged energy storage tank, an existing energy storage module is arranged in the energy storage tank, and a steam flow dividing piece is installed on the top of an inner cavity of the energy storage tank. The liquid storage and heat exchange mechanism is installed at one end of the energy storage tank, the quantitative liquid supply mechanism is installed at the other end of the energy storage tank, high-temperature steam is transmitted in a branched mode, resident water is rapidly heated by means of steam after high-temperature heat exchange, and heat energy of the steam after heat exchange is not excessively consumed. And finally, the hot water is actively discharged by means of a steam-assisted quantitative liquid feeding mechanism, so that the hot water can be continuously supplied to residents while extra electric energy is not consumed, and the purpose of saving energy is achieved.

The application discloses a small-pipe-loss distributed industrial steam supply system and method suitable for power peak regulation, and the system comprises a steam turbine, a boiler for delivering steam to the steam turbine, a feedwater unit, a heat storage and release unit coupled with the boiler and the steam turbine, and a control unit; the heat storage and release unit comprises an adjusting assembly, a steam accumulator, a steam heat exchanger and an air source ultra-high temperature heat pump; the input end of the steam accumulator is connected with the feedwater unit and the steam heat exchanger, and the output end of the steam accumulator is communicated with the air source ultra-high temperature heat pump; the control unit is electrically connected with the adjusting assembly and the air source ultra-high temperature heat pump respectively, and is used for controlling the operating state of the adjusting assembly and the air source ultra-high temperature heat pump according to the steam turbine load signal, the electricity price signal and the steam extraction parameter in the steam accumulator. The application can improve the flexibility and peak regulation capacity of the unit, reduce the pipeline investment cost, and ensure stable heat supply of the unit.

Apparatus for recovering waste heat from the exhaust gases of an electric arc furnace 3 has a forced circulation system comprising a pump 13 and at least one forced circulation duct 15 which is configured to absorb heat from exhaust gas from an electric arc furnace 3. Flow rate through the circulation duct(s) 15 is controlled by means of the pump 13 and can be adjusted depending on the temperature or quantity of exhaust gas. Figure 2 shows an apparatus comprising a first duct 15 for recovering thermal heat from exhaust gas and a second duct 15 for recovering heat generated by combusting the exhaust gas in a combustion chamber 23. The circulation system further comprises a steam buffer 19 for buffering steam. Steam from this buffer 19 can be fed either to a waste heat recovery unit 25 for recovery of heat from combusted exhaust gas or via a steam accumulator 35, header 37 to a heat engine 39 for generating electric power and the waste recovery unit 25.

A steam accumulator having a self-driven fan blade-type air distribution structure, relating to the technical field of accumulators, and aiming to solve the problems of heat loss and pressure imbalance caused by concentrated high temperatures during air intake. An accumulator body is internally provided with steam inlet piping for introducing steam; the steam inlet piping is provided with air distribution mechanisms arranged in the axial direction of the steam inlet piping; the air distribution mechanisms are rotatably connected to the steam inlet piping; the inner cavity of each of the air distribution mechanisms is provided with a steam inner channel communicated with the steam inlet piping; the air distribution mechanism is provided with steam outlet holes communicated with the steam inner channel; and steam discharged from the steam outlet holes is used for driving the air distribution mechanism to rotate. By means of force brought by the steam, the air distribution mechanism is allowed to rotate, high-temperature steam is uniformly discharged to all parts in the accumulator body, thereby enabling heat input to be more uniform, and reducing the problems of heat loss and pressure imbalance caused by local high-temperature differences.

The invention relates to the technical field of steam energy accumulators, in particular to a steam heat accumulation self-overheating system utilizing a self heat source, which comprises a steam heat accumulator, the system further comprises an air inlet pipeline, a superheater and a steam outlet pipeline, the air inlet pipeline and the superheater are both installed on the steam heat accumulator, the steam outlet pipeline is installed on the superheater, and two sets of exhaust ends of the air inlet pipeline are communicated with the interiors of the steam heat accumulator and the superheater respectively. Steam is discharged into the superheater through the air inlet pipeline, the superheater heats the steam to form superheated steam, then the superheated steam is discharged through the steam outlet pipeline, or the steam is discharged into the steam heat accumulator through the air inlet pipeline, and heat energy in the steam is stored by the steam heat accumulator. When needed, steam is discharged into the superheater through the steam heat accumulator, the steps are repeated to form superheated steam, the superheated steam is discharged through the steam outlet pipeline, the quality of the discharged steam is guaranteed, remote conveying of the steam is facilitated, and therefore the practicability of the equipment is improved.