CN111336491A - Steam storage device, system and method for reducing heat loss of pipe network - Google Patents
Steam storage device, system and method for reducing heat loss of pipe network Download PDFInfo
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- CN111336491A CN111336491A CN202010246955.0A CN202010246955A CN111336491A CN 111336491 A CN111336491 A CN 111336491A CN 202010246955 A CN202010246955 A CN 202010246955A CN 111336491 A CN111336491 A CN 111336491A
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- 238000003860 storage Methods 0.000 title claims abstract description 135
- 238000000034 method Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 120
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 19
- 238000013461 design Methods 0.000 claims abstract description 8
- 238000000889 atomisation Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 4
- 239000013589 supplement Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
- F22D1/325—Schematic arrangements or control devices therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
- F22G5/123—Water injection apparatus
- F22G5/126—Water injection apparatus in combination with steam-pressure reducing valves
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- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a steam storage device, a system and a steam storage method for reducing heat loss of a pipe network. The circulating water outlet is connected with a self-circulating pipeline pump, and the outlet of the self-circulating pipeline pump is communicated with the inlet of the demineralized water ring pipe. The invention stores the steam which meets the requirements in the form of high-temperature saturated water at the night during the valley of the steam consumption, can maintain the steam pipe network in the design range so as to effectively reduce the heat loss, and is decompressed and vaporized during the peak of the steam consumption in the daytime to be supplied to the steam users of the steam supply pipe network. The problem of a large amount of heat mass losses caused by the difference of the steam consumption peak valley of the day and night user end at present is effectively reduced, the potential safety hazard caused by frequent water drainage and heating of a steam supply pipe network is improved, and the overall economic benefit of a steam supply system is greatly improved.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the field of comprehensive utilization of heat supply networks, and relates to a steam storage device, a steam storage system and a steam storage method for reducing heat mass loss of a pipe network.
[ background of the invention ]
With the continuous and deep promotion of the work of preventing and controlling the air pollution, the clean and centralized heat supply of the coal is gradually the main heat source for the industrial steam and the heating of residents. In the field of industrial steam supply, an industrial heating system belongs to a demand regulation and supply mode, and industrial heat is not stable and unchangeable due to practical conditions such as large day, small night and even night shutdown caused by the scattered distribution and the production rule of steam users. The design of a heat source side and a steam supply pipe network needs to meet the production peak demand of a steam user, and when the steam consumption is reduced at night, a large amount of steam is condensed and discharged due to the great reduction of the flow speed; under extreme conditions, the steam consumption is stopped at night, and the integral heating pipe is needed during the steam consumption in the daytime, thereby generating great waste of working media and energy. The problem of heat and mass loss of a steam supply pipe network caused by the difference between the peak and the valley of the steam consumption is solved.
[ summary of the invention ]
The invention aims to solve the problems in the prior art and provides a steam storage device, a steam storage system and a steam storage method for reducing heat and mass loss of a pipe network. The method can effectively reduce a large amount of drainage loss caused by peak-valley difference at present, improve potential safety hazards caused by frequent drainage of water and heating pipes of the steam supply pipe network, and greatly improve the overall economic benefit of the steam supply system.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a vapor storage device for reducing heat and mass loss in a pipe network, comprising:
the lower part of the water storage tank body is a water storage area, and the upper part of the water storage tank body is an atomization heat exchange area; the bottom of the water storage area is provided with a low-temperature desalted water replenishing inlet and a self-circulating water outlet, and the upper part of the water storage area is provided with a steam supply outlet;
the atomization heat exchange area on the upper part of the water storage tank body is of a vertical cylindrical structure, and the side surface of the atomization heat exchange area is provided with a plurality of inlets, wherein a half cycle is a steam inlet, and the other half cycle is a demineralized water inlet; the steam inlet is communicated with the industrial steam loop, and the demineralized water inlet is communicated with the demineralized water loop.
The invention further improves the following steps:
and the tail ends of the industrial steam loop and the desalted water loop are both provided with atomizing nozzles, and the atomizing nozzles form an annular pipe network in an atomizing heat exchange area.
The atomizing nozzles are uniformly arranged in the circumferential direction and the height direction.
The circulating water outlet is connected with a self-circulating pipeline pump, and the outlet of the self-circulating pipeline pump is communicated with the inlet of the demineralized water ring pipe.
A distributed steam storage system comprises a plurality of steam storage units, wherein each steam storage unit is connected to a steam supply main pipe corresponding to a user heat supply end inlet, and all users are connected to the steam supply main pipe in parallel; the steam storage unit comprises a steam storage device and a first valve group arranged on a steam supply main pipe at the inlet of the user heat supply end; a steam inlet of the steam storage device is connected to a steam supply main pipe at an inlet of the first valve group, and a steam supply outlet is connected to a steam supply main pipe at an outlet of the first valve group; a pressure reducing valve is arranged on a pipeline between the steam supply outlet of the steam storage device and the steam supply main pipe.
The steam storage system is further improved in that:
and a second valve group is arranged on a pipeline between the steam inlet of the steam storage device and the steam supply main pipe, and a fourth valve group is arranged on a pipeline at the demineralized water inlet of the steam storage device.
A method of storing steam comprising the steps of:
when the steam consumption at night is reduced, the heat source side and the steam supply quantity of the whole steam pipe network are supplied and operated according to the lower limit of the design range so as to maintain the pressure loss and the temperature drop of the whole steam supply pipe network in the optimal range; the second valve group of every steam storage unit is opened, the third valve group, the fourth valve group and the reducing valve are closed, except that the steam supply quantity meets the user demand, the rest steam storage devices entering each steam storage unit enter a steam storage state: the industrial steam supply and the demineralized water in the steam storage device are contacted continuously for heat exchange, when the temperature of the demineralized water in the steam storage device reaches the saturation temperature corresponding to the pressure, the steam storage process is considered to be finished, and the industrial steam is stored in a high-pressure and high-temperature near-saturation water form;
when the steam consumption in daytime is increased, the second valve group of each steam storage unit is closed, the third valve group, the fourth valve group and the pressure reducing valve are opened, the steam storage device is opened in a steam release state, high-pressure and high-temperature near saturated water is vaporized and then used as industrial steam for supplement, enters a steam supply main pipe to be supplied to users, and is gradually vaporized and discharged along with upper-layer high-pressure and high-temperature near saturated water, and low-temperature desalted water enters each steam storage device through the fourth valve group; the upper layer of the steam storage device is continuously vaporized and discharged, the lower layer of the steam storage device is continuously injected with equal amount of low-temperature demineralized water, the interior of the steam storage device is always in a full water state, high-temperature water and low-temperature water are always in a layered state, the low-temperature water pushes the high-temperature water to be vaporized and discharged from bottom to top in the whole steam discharging process, when high-pressure and high-temperature nearly saturated water is completely vaporized and discharged, the interior of the steam storage device is completely filled with the low-temperature demineralized water.
Compared with the prior art, the invention has the following beneficial effects:
the invention stores the 'surplus' steam which meets the user demand in the form of high-temperature saturated water at night during the valley of steam consumption, can maintain the flow rate of the steam pipe network in the design range so as to effectively reduce the heat and mass loss, and is decompressed and vaporized during the peak of steam consumption in the day so as to be supplemented to the steam supply pipe network for supplying the steam consumption users. The application condition is the industrial steam supply pipeline system which is distributed in a linear or net shape, the problem of mass heat loss caused by the difference between the peak value and the valley value of the steam consumption of the day and night user ends is effectively solved, the potential safety hazard caused by frequent water drainage and heating of a steam supply pipe network is improved, and the overall economic benefit of the steam supply system is greatly improved.
[ description of the drawings ]
FIG. 1 is a schematic view of the structure of a steam storage device according to the present invention;
FIG. 2 is a top view of the upper atomizing heat transfer zone of the vapor storage device of the present invention;
FIG. 3 is a schematic view of a distributed steam storage system of the present invention.
Wherein: 1-a first valve group; 2-a second valve group; 3-a third valve group; 4-fourth valve group; 5-a pressure reducing valve; 6-a steam storage device; 7-industrial steam ring pipe; 8-a demineralized water ring pipe; 9-self-circulation pipeline pump.
[ detailed description ] embodiments
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Various structural schematics according to the disclosed embodiments of the invention are shown in the drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
In the context of the present disclosure, when a layer/element is referred to as being "on" another layer/element, it can be directly on the other layer/element or intervening layers/elements may be present. In addition, if a layer/element is "on" another layer/element in one orientation, then that layer/element may be "under" the other layer/element when the orientation is reversed.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the steam storage device for reducing heat loss of a pipe network comprises a water storage tank body, wherein the lower part of the water storage tank body is a water storage area, and the upper part of the water storage tank body is an atomization heat exchange area; the bottom of the water storage area is provided with a low-temperature desalted water replenishing inlet and a self-circulating water outlet, and the upper part of the water storage area is provided with a saturated hot water vaporization outlet; as shown in fig. 2, the atomization heat exchange area at the upper part of the water storage tank body is of a vertical cylindrical structure, and the side surface of the atomization heat exchange area is provided with a plurality of inlets, wherein a half cycle is a steam inlet, and the other half cycle is a demineralized water inlet; the steam inlet is in communication with industrial steam loop 7 and the demineralized water inlet is in communication with demineralized water loop 8. The tail ends of the industrial steam loop pipe 7 and the desalted water loop pipe 8 are provided with atomizing nozzles which form an annular pipe network in an atomizing heat exchange area. The atomizing nozzles are uniformly arranged in the circumferential direction and the height direction. The circulating water outlet is connected with a self-circulating pipeline pump 9, and the outlet of the self-circulating pipeline pump 9 is communicated with the inlet of the demineralized water circular pipe 8.
Referring to fig. 3, the distributed steam storage system based on the steam storage device of the present invention comprises a plurality of steam storage units, each steam storage unit is connected to a steam supply main pipe corresponding to a user heat supply end inlet, and all users are connected in parallel to the steam supply main pipe; the steam storage unit comprises a steam storage device 6 and a first valve group 1 arranged on a steam supply main pipe at the inlet of the user heat supply end; a steam inlet of the steam storage device 6 is connected to a steam supply main pipe at an inlet of the first valve group 1, and a steam supply outlet is connected to a steam supply main pipe at an outlet of the first valve group 1; a pressure reducing valve 5 is arranged on a pipeline between the steam supply outlet of the steam storage device 6 and the steam supply main pipe. A second valve group 2 is arranged on a pipeline between a steam inlet of the steam storage device 6 and a steam supply main pipe, and a fourth valve group 4 is arranged on a pipeline at a demineralized water inlet of the steam storage device 6.
The invention also discloses a steam storage method based on the distributed steam storage system, which comprises the following steps:
when the steam consumption at night is reduced, the heat source side and the steam supply quantity of the whole steam pipe network are supplied and operated according to the lower limit of the design range so as to maintain the pressure loss and the temperature drop of the whole steam supply pipe network in the optimal range; the second valve group 2 of each steam storage unit is opened, the third valve group 3, the fourth valve group 4 and the pressure reducing valve 5 are closed, the steam supply quantity meets the requirements of users, the rest steam storage devices 6 of the steam storage units are fed, and the steam storage devices 6 are fed into the steam storage state: the industrial steam supply and the demineralized water in the steam storage device 6 are contacted continuously for heat exchange, when the temperature of the demineralized water in the steam storage device 6 reaches the saturation temperature corresponding to the pressure, the steam storage process is considered to be finished, and the industrial steam is stored in a high-pressure and high-temperature near-saturated water form;
when the steam consumption in daytime is increased, the second valve group 2 of each steam storage unit is closed, the third valve group 3, the fourth valve group 4 and the pressure reducing valve 5 are opened, the steam storage device 6 is opened in a steam release state, high-pressure and high-temperature near saturated water is vaporized and then supplemented as industrial steam, enters a steam supply main pipe to be supplied to users, and low-temperature desalted water enters each steam storage device 6 through the fourth valve group 4 along with gradual vaporization and discharge of upper-layer high-pressure and high-temperature near saturated water. The upper layer of the steam storage device 6 is continuously vaporized and discharged, the lower layer of the steam storage device is continuously injected with equal amount of low-temperature demineralized water, the inside of the steam storage device is always in a full water state, high-temperature water and low-temperature water are always in a layered state, the low-temperature water pushes the high-temperature water to be vaporized and discharged from bottom to top in the whole steam discharging process, when high-pressure and high-temperature nearly saturated water is completely vaporized and discharged, the inside of the steam storage device 6 is completely filled with the low-temperature demineralized water.
The structural principle of the invention is as follows:
the steam storage device consists of an atomization heat exchange area, a water storage area, a steam input pipeline, a self-circulation system, a pressure reduction steam supply system, a water supplementing pipeline and the like. The atomization heat exchange area adopts a cylindrical structure, steam and demineralized water respectively occupy half areas in a ring-shaped pipe network form, and atomization nozzles are uniformly arranged on the ring-shaped pipe network. And (3) a steam storage process: the steam and the desalted water are atomized at high speed in an opposite mode to contact and exchange heat, and fall into a lower water storage area in a water drop mode. In order to improve the mixed heating effect, a self-circulation pipeline system is arranged, the lower layer water in the water storage area enters the atomization heat exchange area in an atomization mode after being pressurized by a pipeline circulating pump, and is heated repeatedly in sequence, so that the industrial steam can be stored in a high-pressure and high-temperature near-saturation water mode. And (3) a steam releasing process: the pressure reducing valve is gradually opened, and the high-pressure and high-temperature near-saturated water is slightly reduced in pressure to realize vaporization and is converged into a steam main pipe of an industrial park to be supplied to users. The steam storage devices are opened to release steam, the upper-layer high-pressure and high-temperature near-saturated water is gradually vaporized and discharged, and the low-temperature demineralized water enters each steam storage device. The upper layer of the steam storage device is continuously vaporized and discharged, the lower layer of the steam storage device is continuously injected with equal amount of low-temperature demineralized water, the interior of the steam storage device is always in a full water state, high-temperature water and low-temperature water are always in a layered state, the low-temperature water pushes the high-temperature water to be vaporized and discharged from bottom to top in the whole steam discharging process, when high-pressure and high-temperature nearly saturated water is completely vaporized and discharged, the interior of the steam storage device is completely filled with the low-temperature demineralized water.
The distributed steam storage device is preferably designed according to the steam utilization load difference and the duration of day and night peak-valley difference of an industrial park at a distribution point, and can maintain the safe and reliable operation of the whole steam storage system.
When the steam consumption of the industrial park is greatly reduced at night, the heat source side and the steam supply amount of the whole steam pipe network still supply steam according to the lower limit of the design range to operate, so that the pressure loss and the temperature drop of the whole steam supply pipe network are maintained in the optimal range, the industrial steam supply amount meets the requirements of the industrial park, the rest steam enters the distributed steam storage device 6, the valve group 2 is opened at the moment, the valve groups 3 and 4 are closed, the pressure reducing valve 5 is closed, and the industrial steam is stored in a high-pressure and high-temperature near-saturated water mode. When the steam consumption of the industrial park is increased in the daytime, the distributed steam storage device 6 is opened in a steam release state, the valve group 2 is closed, the valve groups 3 and 4 are opened, the pressure reducing valve 5 is opened, high-pressure and high-temperature near saturated water is vaporized and then supplemented as industrial steam and enters a steam supply main pipe supply park, low-temperature demineralized water enters the distributed steam storage device 6 through the valve group 4, and the high-pressure and high-temperature near saturated water is gradually replaced in a layered mode from bottom to top.
The distributed steam storage devices are arranged in a coordinated layout according to the number and the positions of the large industrial parks of the whole pipe network.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (7)
1. A steam storage device for reducing heat and mass loss of a pipe network is characterized by comprising:
the lower part of the water storage tank body is a water storage area, and the upper part of the water storage tank body is an atomization heat exchange area; the bottom of the water storage area is provided with a low-temperature desalted water replenishing inlet and a self-circulating water outlet, and the upper part of the water storage area is provided with a steam supply outlet;
the atomization heat exchange area on the upper part of the water storage tank body is of a vertical cylindrical structure, and the side surface of the atomization heat exchange area is provided with a plurality of inlets, wherein a half cycle is a steam inlet, and the other half cycle is a demineralized water inlet; the steam inlet is communicated with the industrial steam ring pipe (7), and the demineralized water inlet is communicated with the demineralized water ring pipe (8).
2. Steam storage device for reducing heat and mass loss in pipe networks according to claim 1, characterized in that the end of the industrial steam loop (7) and the end of the demineralized water loop (8) are provided with atomizing nozzles which form an annular pipe network in the atomizing heat exchange zone.
3. The vapor storage device for reducing heat and mass loss of a pipe network of claim 2, wherein the atomizing nozzles are uniformly arranged in the circumferential direction and the height direction.
4. The steam storage device for reducing heat and mass loss of a pipe network according to claim 1, wherein a self-circulation pipeline pump (9) is connected to the circulating water outlet, and the outlet of the self-circulation pipeline pump (9) is communicated with the inlet of the demineralized water loop (8).
5. A distributed steam storage system using the steam storage device of any one of claims 1 to 4, comprising a plurality of steam storage units, each steam storage unit being connected to a steam supply main pipe corresponding to a user heat supply end inlet, all users being connected in parallel to the steam supply main pipe; the steam storage unit comprises a steam storage device (6) and a first valve group (1) arranged on a steam supply main pipe at the inlet of the user heat supply end; a steam inlet of the steam storage device (6) is connected to a steam supply main pipe at an inlet of the first valve group (1), and a steam supply outlet is connected to a steam supply main pipe at an outlet of the first valve group (1); a pressure reducing valve (5) is arranged on a pipeline between the steam supply outlet of the steam storage device (6) and the steam supply main pipe.
6. A distributed steam storage system according to claim 5, wherein a second valve group (2) is arranged on a pipeline between a steam inlet of the steam storage device (6) and a steam supply main pipe, and a fourth valve group (4) is arranged on a pipeline at a demineralized water inlet of the steam storage device (6).
7. A steam storage method using the distributed steam storage system according to claim 6, comprising the steps of:
when the steam consumption at night is reduced, the heat source side and the steam supply quantity of the whole steam pipe network are supplied and operated according to the lower limit of the design range so as to maintain the pressure loss and the temperature drop of the whole steam supply pipe network in the optimal range; open second valve group (2) of every steam storage unit, close third valve group (3), fourth valve group (4) and relief pressure valve (5), supply the vapour volume except satisfying the user's demand, all the other steam storage device (6) that get into each steam storage unit, steam storage device (6) get into the steam storage state: the demineralized water in the industrial steam supply and steam storage device (6) is contacted with each other continuously for heat exchange, when the temperature of the demineralized water in the steam storage device (6) reaches the saturation temperature corresponding to the pressure, the steam storage process is considered to be finished, and the industrial steam is stored in a high-pressure and high-temperature near-saturation water form;
when the steam consumption in daytime is increased, the second valve group (2) of each steam storage unit is closed, the third valve group (3), the fourth valve group (4) and the pressure reducing valve (5) are opened, the steam storage device (6) is opened in a steam release state, high-pressure and high-temperature near saturated water is vaporized and then used as industrial steam for supplement, enters a steam supply main pipe for supplying users, is gradually vaporized and discharged along with the upper-layer high-pressure and high-temperature near saturated water, and low-temperature demineralized water enters each steam storage device (6) through the fourth valve group (4); the upper layer of the steam storage device (6) is continuously vaporized and discharged, the lower layer of the steam storage device is continuously injected with equal amount of low-temperature demineralized water, the inside of the steam storage device is always in a full water state, high-temperature water and low-temperature water are always in a layered state, the low-temperature water pushes the high-temperature water to be vaporized and discharged from the bottom to the top in the whole steam discharging process, when high-pressure and high-temperature nearly saturated water is completely vaporized and discharged, the inside of the steam storage device (6) is completely filled with the low-temperature.
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| CN212132393U (en) * | 2020-03-31 | 2020-12-11 | 华能国际电力股份有限公司德州电厂 | Steam storage device and system for reducing heat loss of pipe network |
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