CN211952711U - Electric heating steam boiler - Google Patents
Electric heating steam boiler Download PDFInfo
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- CN211952711U CN211952711U CN202020441872.2U CN202020441872U CN211952711U CN 211952711 U CN211952711 U CN 211952711U CN 202020441872 U CN202020441872 U CN 202020441872U CN 211952711 U CN211952711 U CN 211952711U
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Abstract
The utility model discloses an electrical heating steam boiler, include: a steam boiler body and a fused salt heat storage tank; the structure of the molten salt heat storage tank comprises: the side wall of the heat storage tank body is provided with a temperature sensor for detecting the temperature of the molten salt in the heat storage tank body; the steam boiler body structure includes: the boiler comprises a boiler furnace and a controller, wherein a saturated steam outlet is arranged at the top of the boiler furnace, a backwater outlet is arranged at the bottom of the boiler furnace, a steam inlet and a water replenishing port connected with a water feeding pump are arranged on the side wall of the lower part of the boiler furnace, and a plurality of second electric heaters are arranged at the lower part of an inner cavity of the boiler furnace; the backwater outlet is communicated with the water supply inlet of the molten salt heat storage tank through a first connecting pipeline with a circulating pump, and the steam outlet of the molten salt heat storage tank is communicated with the steam inlet through a second connecting pipeline; the controller of the steam boiler body is simultaneously in signal connection with the first electric heaters, the temperature sensor, the second electric heaters, the steam valve, the water feeding pump and the circulating pump. The utility model has the advantage of high stability in use.
Description
Technical Field
The utility model relates to a heat accumulation formula electric heating boiler technical field, concretely relates to electric heating steam boiler.
Background
With energy-saving and environment-friendly strategies advocated by the state at present, the DSM operation mode executed by the national power department has great market significance for enterprises to develop heat-accumulating electric heating boilers which can fully utilize the off-peak electricity price to accumulate heat and operate, and can shut down the electric boilers at the peak time of a power grid and operate by heat release of heat accumulation media. The product is mainly used for the factory when the wave crests and the wave troughs of the electrical load are staggered, the operation cost of the factory can be effectively reduced, the energy can be instantaneously released after the energy is stored, and the working efficiency is improved.
The molten salt has the advantages of wide liquid temperature range, low viscosity, good flow performance, small vapor pressure, low requirement on pipeline pressure-bearing capacity, high relative density, high specific heat capacity, strong heat storage capacity, low cost and the like, is a well-known good medium-high temperature heat transfer and storage medium, and a molten salt energy storage technology utilizing the molten salt as a heat transfer and storage medium is one of the most mainstream medium-high temperature heat storage technologies at present.
The structure of the electric heating steam boiler used at present comprises: a steam boiler body and a fused salt heat storage tank; the molten salt heat storage tank structurally comprises: the molten salt heat storage device comprises a heat storage tank body storing molten salt, wherein a molten salt injection port is arranged at the top of the heat storage tank body, a water supply inlet and a steam outlet are arranged on the side wall of the heat storage tank body, a plurality of first electric heaters used for heating the molten salt in an inner cavity of the heat storage tank body are arranged at the bottom of the inner cavity of the heat storage tank body, a coil pipe heat exchanger is arranged in the middle of the inner cavity of the heat storage tank body, the inlet end of the coil pipe heat exchanger is communicated with the water supply inlet in a sealing manner; the steam boiler body structurally comprises: the boiler comprises a boiler furnace, wherein a saturated steam outlet provided with a steam valve is arranged at the top of the boiler furnace, a backwater outlet is arranged at the bottom of the boiler furnace, and a steam inlet and a water replenishing port connected with a water feeding pump are arranged on the side wall of the lower part of the boiler furnace; the water return outlet of the steam boiler body is in sealed communication with the water supply inlet of the molten salt heat storage tank through a first connecting pipeline with a circulating pump, and the steam outlet of the molten salt heat storage tank is in sealed communication with the steam inlet of the steam boiler body through a second connecting pipeline.
The above-mentioned electrically heated steam boiler has the following disadvantages: during the use process, the dryness and pressure stability of the steam can obviously change along with the continuous change of the heat storage amount in the molten salt heat storage tank, and the quality of the steam cannot be ensured; particularly, in the latter half of the heat release and steam exchange of the electric heating steam boiler, a user needs to prevent the phenomena of shutdown and the like caused by insufficient heat storage in the fused salt heat storage tank due to the increment of large working conditions, and the use stability and the use safety are poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electric heating steam boiler that stability in use and safety in utilization are high.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an electrically heated steam boiler, comprising: a steam boiler body and a fused salt heat storage tank; the molten salt heat storage tank structurally comprises: the molten salt temperature detection device comprises a heat storage tank body for storing molten salt, wherein a molten salt injection port is arranged at the top of the heat storage tank body, a water supply inlet and a steam outlet are arranged on the side wall of the heat storage tank body, a plurality of first electric heaters for heating the molten salt in the inner cavity of the heat storage tank body are arranged at the bottom of the inner cavity of the heat storage tank body, a coil heat exchanger is arranged in the middle of the inner cavity of the heat storage tank body, the inlet end of the coil heat exchanger is hermetically communicated with the water supply inlet, the outlet end of the coil heat exchanger is hermetically communicated with the steam outlet, and a temperature sensor for detecting the; the steam boiler body structurally comprises: the boiler comprises a boiler furnace and a controller, wherein a saturated steam outlet provided with a steam valve is arranged at the top of the boiler furnace, a backwater outlet is arranged at the bottom of the boiler furnace, a steam inlet and a water replenishing port connected with a water feeding pump are arranged on the side wall of the lower part of the boiler furnace, and a plurality of second electric heaters used for heating water in the inner cavity of the boiler furnace are arranged at the lower part of the inner cavity of the boiler furnace; the water return outlet of the steam boiler body is hermetically communicated with the water supply inlet of the molten salt heat storage tank through a first connecting pipeline with a circulating pump, and the steam outlet of the molten salt heat storage tank is hermetically communicated with the steam inlet of the steam boiler body through a second connecting pipeline; and the controller of the steam boiler body is simultaneously in signal connection with the first electric heaters, the temperature sensor, the second electric heaters, the steam valve, the water feeding pump and the circulating pump.
Further, the aforementioned electrically heated steam boiler, wherein: the side wall of the furnace of the steam boiler body is provided with a water level gauge for detecting the water level in the furnace, and the water level gauge is in signal connection with a controller of the steam boiler body.
Further, the aforementioned electrically heated steam boiler, wherein: the side wall of the furnace pipe of the steam boiler body is provided with a pressure gauge for displaying the pressure value in the furnace pipe in real time.
Further, the aforementioned electrically heated steam boiler, wherein: the first electric heater is an electric heating rod extending into the bottom of the inner cavity of the heat storage tank body.
Further, the aforementioned electrically heated steam boiler, wherein: the second electric heater is an electric heating rod extending into the lower part of the inner cavity of the furnace pipe.
Further, the aforementioned electrically heated steam boiler, wherein: the backwater outlet of the furnace of the steam boiler body is also connected with a sewage discharge pipeline with a sewage discharge valve.
Through the implementation of the above technical scheme, the beneficial effects of the utility model are that: the energy-saving molten salt heat storage tank has the advantages that the heat storage energy in the molten salt heat storage tank can be utilized in an adjustable mode according to the temperature inside the molten salt heat storage tank, the steam boiler can be assisted by self-heating, accordingly, the stability of steam supply is optimized, the energy-saving utilization of valley electricity energy storage is achieved, instantaneous use of a user under large conditions can be met, and the use stability and the use safety are high.
Drawings
Fig. 1 is a schematic view of the internal structure of an electric heating steam boiler according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the electric heating steam boiler comprises: a steam boiler body and a fused salt heat storage tank; the molten salt heat storage tank structurally comprises: the molten salt heat storage device comprises a heat storage tank body 1 storing molten salt, wherein a molten salt injection port 2 is arranged at the top of the heat storage tank body 1, a water supply inlet 3 and a steam outlet 4 are arranged on the side wall of the heat storage tank body 1, a plurality of first electric heaters 5 used for heating the molten salt in the inner cavity of the heat storage tank body are arranged at the bottom of the inner cavity of the heat storage tank body 1, a coil heat exchanger 6 is arranged in the middle of the inner cavity of the heat storage tank body 1, the inlet end of the coil heat exchanger 6 is hermetically communicated with the water supply inlet 3, the outlet end of the coil heat exchanger 6 is hermetically communicated with the steam outlet 4, and a temperature sensor 7 used for detecting the temperature of; the steam boiler body structurally comprises: the boiler comprises a boiler furnace 8 and a controller 9, wherein a saturated steam outlet 11 for installing a steam valve is arranged at the top of the boiler furnace 8, a backwater outlet 12 is arranged at the bottom of the boiler furnace 8, a steam inlet 13 and a water replenishing port 15 connected with a water feeding pump 14 are arranged on the side wall of the lower part of the boiler furnace 8, and a plurality of second electric heaters 16 used for heating water in the inner cavity of the boiler furnace are arranged at the lower part of the inner cavity of the boiler furnace 8; the backwater outlet 12 of the steam boiler body is in sealed communication with the water supply inlet 3 of the molten salt heat storage tank through a first connecting pipeline 18 with a circulating pump 17, and the steam outlet 4 of the molten salt heat storage tank is in sealed communication with the steam inlet 13 of the steam boiler body through a second connecting pipeline 19; the controller 9 of the steam boiler body is simultaneously in signal connection with the first electric heaters 5, the temperature sensor 7, the second electric heaters 16, the steam valve 10, the feed pump 14 and the circulating pump 17;
in this embodiment, a water level gauge 20 for detecting the water level in the furnace is arranged on the side wall of the furnace 8 of the steam boiler body, the water level gauge 20 is in signal connection with a controller 9 of the steam boiler body, the controller 9 can receive a water level signal sent by the water level gauge 20 in real time and compare the received real-time water level with a preset normal working water level, when the controller 9 judges that the real-time water level is lower than the normal working water level, the controller 9 controls to start the water feeding pump 14 to feed water into the furnace 8 until the water level in the furnace 8 reaches the normal working water level, so that the use stability and the use safety of the equipment can be improved; in the embodiment, the pressure gauge 21 for displaying the pressure value in the furnace in real time is arranged on the side wall of the furnace 8 of the steam boiler body, so that the use stability and the use safety of the equipment can be further improved; in this embodiment, the first electric heater 5 is an electric heating rod extending into the bottom of the inner cavity of the heat storage tank, and the second electric heater 16 is an electric heating rod extending into the lower part of the inner cavity of the furnace, so that the production cost of the equipment can be reduced on the premise of ensuring the service performance of the equipment; in the embodiment, the backwater outlet 12 of the furnace pipe 8 of the steam boiler body is also connected with a blowdown pipeline 23 with a blowdown valve 22, so that the equipment is convenient to overhaul and maintain;
during valley electricity, the controller 9 operates the first electric heater 5 of the molten salt heat storage tank to convert energy and store heat for the molten salt in the molten salt heat storage tank, the temperature sensor 7 detects the temperature of the molten salt in the molten salt heat storage tank in real time and sends the temperature to the controller 9 in the process of storing the molten salt, and when the controller 9 judges that the temperature of the molten salt reaches the preset value through the temperature sensor 7, the controller 9 stops the first electric heater 5 of the molten salt heat storage tank from heating;
when a user has a steam demand, starting the controller 9, judging whether the water level in the furnace pipe 8 reaches a normal working water level or not by the controller 9 according to a water level signal sent by the water level gauge 20, and if the controller 9 judges that the real-time water level in the furnace pipe 8 is lower than the normal working water level, controlling the water feeding pump 14 to be started by the controller 9 to supplement water into the furnace pipe 8 until the water level in the furnace pipe 8 reaches the normal working water level; after the water level in the furnace pipe 8 reaches the normal working water level, the controller 9 starts the circulating pump 17, at this time, the water in the furnace pipe 8 enters the coil heat exchanger 6 in the fused salt heat storage tank through the backwater outlet 12, the first connecting pipeline 18, the circulating pump 17 and the water supply inlet 3 in sequence, in the process that the water passes through the coil heat exchanger 6, the water exchanges heat with the fused salt in the fused salt heat storage tank through the coil heat exchanger 6 and is gradually converted into saturated water or water vapor, the saturated water or water vapor after heat exchange enters the second connecting pipeline 19 through the vapor outlet 4 and then enters the steam boiler body through the vapor inlet 13, steam-water molecules entering the steam boiler body are separated in the steam boiler due to density difference to form interfaces such as vapor, water vapor, saturated water and the like, the vapor in the steam boiler body increases along with the increase of the heat exchange amount, the pressure rises, at this time, a user can open the, the controller 9 adjusts the circulation amount along with the temperature change in the molten salt heat storage tank to realize balanced heat exchange;
when the temperature of the molten salt in the molten salt heat storage tank reaches the set median value of the controller 9, the controller 9 adjusts and increases the circulation volume, the increased flow rate can improve the small temperature difference heat exchange effect after the temperature in the molten salt heat storage tank is reduced, and when the pressure in the steam boiler body is reduced due to the reduction of the steam generation caused by insufficient heat storage in the molten salt heat storage tank, the controller 9 starts part of the second electric heaters 16 in the steam boiler body to heat, so that the steam is rapidly generated for users to use;
when the temperature in the heat storage tank reaches the set low-level protection value of the controller 9, the controller 9 stops the circulating pump 17, and starts all the second electric heaters 16 in the steam boiler body to heat, so as to generate steam for users to use;
the specific operation under different conditions is as follows:
working condition 1: the fused salt heat storage tank stores heat under the valley electricity using condition, heating is stopped after the temperature is reached, under the working condition of steam for heat exchange of the fused salt heat storage tank, the controller 9 stops the heating function of the steam boiler body, the circulating pump 17 is started, water in the steam boiler body exchanges heat with fused salt in the fused salt heat storage tank through the coil pipe heat exchanger 6, then the water enters the steam boiler body to be subjected to steam-water separation to generate steam, and the circulating water quantity is adjusted through detection of the temperature in the fused salt heat storage tank, so that the balance of the steam yield is achieved;
working condition 2: the heating function and the circulating pump of the steam boiler body can be started simultaneously in the second half of the heat exchange of the fused salt heat storage tank during the steam use, namely under the adjusting working condition that the temperature in the fused salt heat storage tank is reduced after continuous heat exchange. The full heat exchange utilization of the stored energy heat is achieved, the balanced steam production of the steam is realized, and the balanced demand of a user on the use of the steam is ensured;
working condition 3: if the requirement of the user on the steam quantity is larger than the heat storage energy due to special working conditions, the steam boiler has the function of independently generating steam to meet the requirement of the user under the working condition of non-heat storage steam;
working condition 4: if a user needs to instantaneously overload the process heat preservation working condition of rapidly heating the pool or the chamber by using steam before working and then reducing the steam consumption before working due to the production process requirements, the heat release of the fused salt heat storage tank and the self-heating assistance of the steam boiler body can be simultaneously executed, the combined steam quantity of the heat storage steam and the electric heating steam is rapidly released, the process temperature rise is targeted, and then the process small steam quantity heat preservation stage of the electric heating steam heating is carried out.
The utility model has the advantages that: the energy-saving molten salt heat storage tank has the advantages that the heat storage energy in the molten salt heat storage tank can be utilized in an adjustable mode according to the temperature inside the molten salt heat storage tank, the steam boiler can be assisted by self-heating, accordingly, the stability of steam supply is optimized, the energy-saving utilization of valley electricity energy storage is achieved, instantaneous use of a user under large conditions can be met, and the use stability and the use safety are high.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any modifications or equivalent changes made in accordance with the technical spirit of the present invention are also within the scope of the present invention.
Claims (6)
1. An electrically heated steam boiler, comprising: the method comprises the following steps: a steam boiler body and a fused salt heat storage tank; the molten salt heat storage tank structurally comprises: the molten salt temperature detection device comprises a heat storage tank body for storing molten salt, wherein a molten salt injection port is arranged at the top of the heat storage tank body, a water supply inlet and a steam outlet are arranged on the side wall of the heat storage tank body, a plurality of first electric heaters for heating the molten salt in the inner cavity of the heat storage tank body are arranged at the bottom of the inner cavity of the heat storage tank body, a coil heat exchanger is arranged in the middle of the inner cavity of the heat storage tank body, the inlet end of the coil heat exchanger is hermetically communicated with the water supply inlet, the outlet end of the coil heat exchanger is hermetically communicated with the steam outlet, and a temperature sensor for detecting the; the steam boiler body structurally comprises: the boiler comprises a boiler furnace and a controller, wherein a saturated steam outlet provided with a steam valve is arranged at the top of the boiler furnace, a backwater outlet is arranged at the bottom of the boiler furnace, a steam inlet and a water replenishing port connected with a water feeding pump are arranged on the side wall of the lower part of the boiler furnace, and a plurality of second electric heaters used for heating water in the inner cavity of the boiler furnace are arranged at the lower part of the inner cavity of the boiler furnace; the water return outlet of the steam boiler body is hermetically communicated with the water supply inlet of the molten salt heat storage tank through a first connecting pipeline with a circulating pump, and the steam outlet of the molten salt heat storage tank is hermetically communicated with the steam inlet of the steam boiler body through a second connecting pipeline; and the controller of the steam boiler body is simultaneously in signal connection with the first electric heaters, the temperature sensor, the second electric heaters, the steam valve, the water feeding pump and the circulating pump.
2. An electrically heated steam boiler according to claim 1, wherein: the side wall of the furnace of the steam boiler body is provided with a water level gauge for detecting the water level in the furnace, and the water level gauge is in signal connection with a controller of the steam boiler body.
3. An electrically heated steam boiler according to claim 1, wherein: the side wall of the furnace pipe of the steam boiler body is provided with a pressure gauge for displaying the pressure value in the furnace pipe in real time.
4. An electrically heated steam boiler according to claim 1, 2 or 3, wherein: the first electric heater is an electric heating rod extending into the bottom of the inner cavity of the heat storage tank body.
5. An electrically heated steam boiler according to claim 1, 2 or 3, wherein: the second electric heater is an electric heating rod extending into the lower part of the inner cavity of the furnace pipe.
6. An electrically heated steam boiler according to claim 1, 2 or 3, wherein: the backwater outlet of the furnace of the steam boiler body is also connected with a sewage discharge pipeline with a sewage discharge valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020441872.2U CN211952711U (en) | 2020-03-31 | 2020-03-31 | Electric heating steam boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020441872.2U CN211952711U (en) | 2020-03-31 | 2020-03-31 | Electric heating steam boiler |
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| Publication Number | Publication Date |
|---|---|
| CN211952711U true CN211952711U (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020441872.2U Expired - Fee Related CN211952711U (en) | 2020-03-31 | 2020-03-31 | Electric heating steam boiler |
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| CN (1) | CN211952711U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324234A (en) * | 2021-02-24 | 2021-08-31 | 常州大学 | High-temperature molten salt heat accumulating type steam electric cooker device and using method thereof |
-
2020
- 2020-03-31 CN CN202020441872.2U patent/CN211952711U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324234A (en) * | 2021-02-24 | 2021-08-31 | 常州大学 | High-temperature molten salt heat accumulating type steam electric cooker device and using method thereof |
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Granted publication date: 20201117 Termination date: 20210331 |