CN110173892B - Electrode heating device adopting ceramic box body - Google Patents
Electrode heating device adopting ceramic box body Download PDFInfo
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- CN110173892B CN110173892B CN201910374437.4A CN201910374437A CN110173892B CN 110173892 B CN110173892 B CN 110173892B CN 201910374437 A CN201910374437 A CN 201910374437A CN 110173892 B CN110173892 B CN 110173892B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
- F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
- F24H7/0208—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply
- F24H7/0233—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply the transfer fluid being water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2028—Continuous-flow heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H2250/00—Electrical heat generating means
- F24H2250/10—Electrodes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The invention relates to an electrode heating device adopting a ceramic box body, which is provided with the ceramic box body and an integrated cover plate, wherein electrolyte solution is filled in the ceramic box body; the integrated cover plate is provided with a water collector, a pressure gauge, a water injection port, a pressure release valve, a vacuum valve, a water distributor, spiral heat exchange tubes and a combined electrode, the outlets of the spiral heat exchange tubes are welded with the water collector, and the inlets of the spiral heat exchange tubes are welded with the water distributor; the water collector is connected with the water outlet pipe, the temperature probe is arranged on the water outlet pipe, the water distributor is connected with the water inlet pipe, and the water flow switch is arranged on the water inlet pipe; the combined electrode is connected with alternating current through the main relay and the electric leakage protection device, the alternating current reaches the combined electrode plate in the ceramic box body through the electric leakage protection device and the main relay, the current directly heats electrolyte in the ceramic box body to realize quick conversion of electric energy and heat energy, the electrolyte is heated to be steam, the steam heat is transferred to inlet water through the water separator through condensation heat exchange of the spiral heat exchange tube, and the steam is condensed to fall back into the electrolyte underwater.
Description
Technical Field
The invention relates to an electrode heating device, in particular to an electrode heating device adopting a ceramic box body.
Background
Traditional heating system relies on the heat that coal fired boiler produced, and coal fired boiler exhaust gas is the polluted air and forms the main factor in haze weather. In order to reduce the coal pollution in winter and improve the air quality, clean heating becomes an important policy of the energy conservation and emission reduction career of our country. As a way of clean heating, electrode heating is a device that directly converts electric energy into heat energy by using the resistance characteristics of an electrolyte solution, and has the advantages of miniaturization, high efficiency, long service life and no pollution at the energy consumption end. In addition, in recent years, the installed capacities of wind power, hydropower, photoelectricity and nuclear power are continuously expanded, the capacity of the Chinese power market is rich, and the traditional pollutant emission control of the thermal power plant is also good. Therefore, the waste wind power and the waste photoelectric power are converted into heat energy by using the electrode heating, and the heat energy can effectively replace a coal boiler to supply heat and hot water to urban buildings.
At present, the relatively mature electrode heating technology is mainly an electrode boiler in the industrial field, and the electrode boiler is widely applied to a starting boiler of a thermal power enterprise and a peak shaving boiler of a wind power and photoelectric enterprise and provides high-quality steam and high-temperature hot water for production for enterprises of papermaking, chemical engineering, automobiles, shipbuilding, food and the like. Electrode boilers often require a lot of power and therefore their design voltages are in the medium-high voltage range. However, for civil buildings, it is difficult to have medium and high pressure conditions, and if an electrode boiler is used for central heating, a special boiler room needs to be equipped, and a huge heating pipeline needs to be equipped, so that the characteristic of easy transmission of electric energy cannot be exerted. The electrode heating device for researching and utilizing low voltage electricity to heat civil buildings has important application prospect. Electrode heating imposes stringent requirements on the materials used, and in particular for electrode-heated vessels the following properties need to be met: the insulating property is good, high temperature resistance is strong, water is not absorbed, the strength is high, and the arrangement and the integral sealing of the electrodes are convenient.
In view of the above problems, there is a need for an electrode heating system using a ceramic box, the ceramic box of the electrode heating system is processed by 95% alumina ceramic, and has good insulating property, thermal stability and high mechanical strength, and the main technical indicators include electrical property: volume resistivity is more than or equal to 1 multiplied by 1013Omega cm (100 ℃), direct current breakdown strength not less than 18KW/mm, dielectric constant 9-10, dielectric loss tangent value 4 x 10-4(ii) a Thermal properties: the average linear expansion coefficient is regulated to 6.5 multiplied by 10 according to the national standard GB/T5593-1999-6～7.5×10-6/° c, thermal shock resistance is good; mechanical properties: tensile strength is above 160MPa, and breaking strength is 280 MPa. The sealing combination of the ceramic box body and the integrated cover plate needs to meet the requirement of air tightness (the air leakage rate is less than 1 multiplied by 10)-11Pam3S) forming an effective insulating structure and being able to meet the strength requirements of the respective operating states of the electrode heating device.
Disclosure of Invention
The invention provides an electrode heating device adopting a ceramic box body, which adopts a ceramic material as the box body of the electrode heating device, has better insulating property and thermal stability and high mechanical strength, enables the process of electrically heating water to be insulated from the outside and ensures the safety of the device; through set up the shirt rim of band-pass hole at ceramic box oral area, add and establish behind the silica gel pad and integrate the apron and can realize very good sealing connection, improved the reliability when the device moves. Through the design of the integrated cover plate, the electrodes, the heat exchange tubes, the water collecting and distributing device, the pressure release valve, the vacuum valve and the pressure gauge are arranged on the cover plate, so that the device is easy to process and convenient to maintain, and the service life is prolonged. And a small electric heating system with compact structure, high energy utilization efficiency, rapidness and safety is established by matching with corresponding equipment such as a protection circuit, a water temperature regulating circuit, a water flow induction circuit and the like.
In order to achieve the purpose, the technical scheme of the invention is as follows: an electrode heating device adopting a ceramic box body is provided with the ceramic box body and an integrated cover plate, wherein a water outlet is formed in the center of the bottom of the ceramic box body and is connected with a water drain pipe, a water drain valve is arranged on the water drain pipe, and electrolyte solution is filled in the ceramic box body; the integrated cover plate is provided with a water collector, a pressure gauge, a water injection port, a pressure release valve, a vacuum valve, a water distributor, spiral heat exchange tubes and a combined electrode, the outlets of the spiral heat exchange tubes are welded with the water collector, and the inlets of the spiral heat exchange tubes are welded with the water distributor; the water collector is connected with the water outlet pipe, the temperature sensor is arranged on the water outlet pipe, the water distributor is connected with the water inlet pipe, and the water flow sensor is arranged on the water inlet pipe; the combined electrode is connected with alternating current through the main relay and the electric leakage protection device, the alternating current reaches the combined electrode plate in the ceramic box body through the electric leakage protection device and the main relay, current is enabled to directly heat electrolyte in the ceramic box body to achieve rapid conversion of electric energy and heat energy, the electrolyte is heated to be changed into steam, the steam heat is transferred to inlet water through the water separator through condensation heat exchange of the spiral heat exchange tube, and the steam is condensed into water and falls back into the electrolyte.
Furthermore, the upper part of the combined electrode is provided with a conductive screw rod, the conductive screw rod penetrates out of the ceramic nut, and the ceramic nut is screwed on the nut on the integrated cover plate.
Further, the pottery box contains pottery square barrel, shirt rim and strengthening rib, and the strengthening rib setting all arranges a plurality of through-holes on every skirt at pottery square barrel and shirt rim junction to with integrate apron sealing connection.
Furthermore, through holes with the same positions as the skirt edges of the ceramic box bodies are sequentially arranged on the integrated cover plate, and the integrated cover plate and the ceramic box bodies are fixedly connected through screws after silica gel base plates are arranged.
Furthermore, the integrated cover plate is made of stainless steel.
Further, the pressure gauge, the water filling port, the pressure release valve and the vacuum valve are connected with the cover plate through threads.
Furthermore, a power regulator is connected between the combined electrode and the main relay, the power regulator is connected with the control circuit, the control signal output end of the control circuit is connected with the main relay, and the signal input end is connected with a water flow sensor and a temperature sensor which are arranged at the water inlet end and the water outlet end of each spiral heat exchange tube.
Compared with the common built-in heater, the invention has the following beneficial effects:
1. the heating elements are few, and water is directly heated through the electrodes. Compared with a heat pipe type heater, the common fault that the electric heating element is burnt is avoided, and the service life is long;
2. in the heater body, water in the electrolyte solution is changed into steam by using low-voltage alternating current, and then the heat of the steam is transferred to circulating water in the heat exchanger in a phase-change heat exchange mode, so that the purpose of heating by converting electric energy into heat energy is achieved.
3. The aluminum oxide ceramic material is adopted as the box body of the electrode heating device, so that the insulating property, the thermal stability and the mechanical strength are good, the electric heating water process can be insulated from the outside, and the safety of the device is ensured.
4. The condensation phase-change heat exchange mode is adopted, so that the heat transfer efficiency is greatly improved, and the energy-saving effect is obvious;
5. the heating speed is increased, the boiling temperature of the electrolyte in a vacuum state is reduced, the boiling time is reduced, and the rapid heating of the electric heating device can be realized;
6. the temperature is convenient to adjust (control), and the stepless adjustment of the heating quantity and the outlet water temperature can be realized;
7. the safety is improved, and the maximum safety can be ensured by the arrangement of the electric isolation and the safety circuit.
Drawings
FIG. 1 is a diagram of an electrode heating system using a ceramic case according to the present invention;
FIG. 2 is a schematic view showing the construction of an electrode heating apparatus using a ceramic case according to the present invention;
FIG. 3 is a plan view of a heating body of the electrode heating system using the ceramic case according to the present invention. (ii) a
In the figure: 1-a ceramic square barrel; 2-skirt edge; 3-reinforcing ribs; 4-a drain pipe; 5-a drain valve; 6-electrolyte solution; 7-an integrated cover plate; 8-a water collector; 9-a pressure gauge; 10-water injection port; 11-a pressure relief valve; 12-a vacuum valve; 13-a water separator; 14-spiral heat exchange tubes; 15-a combined electrode; 16-a water outlet pipe; 17-temperature probe; 18-a water inlet pipe; 19-a water flow switch; 20-a combined electrode; 21-a conductive screw; 22-a ceramic nut; 23-silica gel pad.
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown in fig. 1 to 3, the electrode heating apparatus using a ceramic case according to the present invention includes two major parts, i.e., a ceramic case and an integrated cover plate. The pottery box contains pottery square barrel 1, shirt rim 2 and strengthening rib 3, and the strengthening rib setting has all arranged the through-hole of certain number on pottery square barrel and shirt rim junction on every skirt to with integrate apron sealing connection, be equipped with the outlet in the bottom center department of pottery square barrel, outlet connection drain pipe 4 has drain valve 5 on the drain pipe, the inside electrolyte solution 6 that is equipped with certain volume certain concentration of pottery box. The water collector 8, the pressure gauge 9, the water injection port 10, the pressure release valve 11, the vacuum valve 12, the water distributor 13, the spiral heat exchange tubes 14 and the combined electrodes 15 are arranged on the integrated cover plate 7, the integrated cover plate is made of stainless steel, outlets of the spiral heat exchange tubes are welded with the water collector, and inlets of the spiral heat exchange tubes are welded with the water distributor. The water collector is connected with a water outlet pipe 16, a temperature probe 17 is arranged on the water outlet pipe, the water distributor is connected with a water inlet pipe 18, and a water flow switch 19 is arranged on the water inlet pipe. The pressure gauge, the water filling port, the pressure release valve and the vacuum valve are connected with the cover plate through threads. The upper part of the combined electrode 20 is provided with a conductive screw 21 which penetrates out of a ceramic nut 22 screwed on the nut on the integrated cover plate. Through holes with the same positions as the skirt edges of the ceramic box bodies are sequentially arranged on the integrated cover plate, and the integrated cover plate and the ceramic box bodies are screwed up through screws after silica gel base plates 23 are additionally arranged.
As shown in fig. 2, the combined electrode 15 is connected with alternating current through the main relay and the leakage protection device, the alternating current reaches the combined electrode plate in the ceramic box through the leakage protection device and the main relay, so that the current directly heats the electrolyte in the ceramic box to realize the rapid conversion of electric energy and heat energy, the electrolyte is heated to be changed into steam, the steam heat is condensed and exchanged through the spiral heat exchange tube 14, the steam heat is transferred to water inlet through the water separator, and the steam is condensed to be underwater and falls back into the electrolyte. And a power regulator is also connected between the combined electrode 20 and the main relay, the power regulator is connected with a control circuit, the control signal output end of the control circuit is connected with the main relay, and the signal input end of the control circuit is connected with a water flow sensor and a temperature sensor which are arranged at the water inlet end and the water outlet end of each spiral heat exchange tube.
Alternating current reaches an electrode plate of the main heating body through the leakage protection device and the main relay, a main circuit is in a closed state due to the conductivity of electrolyte, the current directly heats the electrolyte to realize the rapid conversion of electric energy and heat energy, and the electrolyte is heated to become steam; transferring the heat of the steam to inlet water by adopting a condensation heat exchange mode, and condensing the steam into water and falling back into the electrolyte; and a small electric heating system with compact structure, high energy utilization efficiency, rapidness and safety is established by matching with corresponding equipment such as a protection circuit, a water temperature regulating circuit, a water flow induction circuit and the like.
The ceramic material is used as the box body of the electrode heating device, so that the electric heating water process can be insulated from the outside, and the safety of the device is ensured. Through set up the shirt rim of band-pass hole at ceramic box oral area, add and establish behind the silica gel pad and integrate the apron and can realize very good sealing connection, improved the reliability when the device moves. In order to ensure the sealing performance of the device, the flatness of the skirt edge needs to be ensured, so that the reinforcing ribs are arranged at the connecting part of the opening part and the skirt edge of the ceramic box body, and the deformation of the ceramic box body in the processing process can be effectively weakened. Through the design of the integrated cover plate, the electrodes, the heat exchange tubes, the water collecting and distributing device, the pressure release valve, the vacuum valve and the pressure gauge are arranged on the cover plate, so that the device is easy to process and convenient to maintain, and the service life is prolonged.
The invention can be connected with 220V lighting alternating current or 380V power electricity, in the embodiment, the manufactured combined electrode is screwed into the ceramic nut, and then the ceramic nut is screwed into the two electrode holes on the cover plate. Electrolyte solution with certain volume and certain concentration is injected into the ceramic box body, and then the box body is sealed through screws. Circulating water from the hot water circulating pump enters the water separator through the water inlet pipe, then enters the water collector after flowing through each spiral heat exchange pipe, flows out to the heat using unit from the water outlet pipe, and switches on the electrodes at two sides after the water flow switch detects that water flows in the water channel. After the current flows through the electrolyte solution, the solution is directly heated due to the resistive properties of the solution. The water in the solution is heated and boiled to generate steam, and the steam reaches the upper part of the ceramic box body and is condensed into water to return to the lower part of the ceramic box body after exchanging heat with circulating water in the spiral heat exchange tube. Along with the quantity that steam produced is more and more, the pressure in the box thereupon grow, carries out the pressure release after reaching the set pressure of relief valve, can discharge noncondensable gas, reinforcing heat transfer effect. The circulating water of absorbed heat flows out to with the hot junction behind the water collector, the temperature sensor who sets up at the delivery port surveys the temperature degree after and feeds back to the temperature controller, the temperature controller transmits voltage signal and gives the power regulator, the power regulator adjusts the voltage, when delivery port temperature reaches the settlement temperature, thereby reduce voltage reduces heating power, the system heating capacity is not enough this moment, make the inside temperature of box reduce, the steam condensation volume is greater than the evaporation capacity and leads to the internal pressure reduction of box, the vacuum valve is opened when pressure reduction to the settlement pressure.
The invention can be widely applied to various heating occasions, and actively responds to the national coal change policy to realize a clean, efficient and energy-saving heating mode in coal change areas; the method can be well applied to areas with rich power resources, and the effect of peak clipping and valley filling is achieved by combining with an energy storage technology, so that a power grid system is stabilized; the heating device is suitable for various civil and industrial purposes, and a user can freely control the heating time and is provided with a unit with proper power according to the requirement.
Claims (5)
1. The utility model provides an adopt electrode heating system of pottery box, has a pottery box, an integrated apron, its characterized in that: a water outlet is formed in the center of the bottom of the ceramic box body and connected with a water discharge pipe, a water discharge valve is arranged on the water discharge pipe, and electrolyte solution is filled in the ceramic box body; the integrated cover plate is provided with a water collector, a pressure gauge, a water injection port, a pressure release valve, a vacuum valve, a water distributor, spiral heat exchange tubes and a combined electrode, the outlets of the spiral heat exchange tubes are welded with the water collector, and the inlets of the spiral heat exchange tubes are welded with the water distributor; the water collector is connected with the water outlet pipe, the temperature sensor is arranged on the water outlet pipe, the water distributor is connected with the water inlet pipe, and the water flow sensor is arranged on the water inlet pipe; the combined electrode is connected with alternating current through a main relay and an electric leakage protection device, the alternating current reaches a combined electrode plate in the ceramic box body through the electric leakage protection device and the main relay, so that current directly heats electrolyte in the ceramic box body to realize rapid conversion of electric energy and heat energy, the electrolyte is heated to be steam, the steam heat is transferred to inlet water through a water separator through condensation heat exchange of the spiral heat exchange tube, and the steam is condensed to be underwater and falls back into the electrolyte; the upper part of the combined electrode is provided with a conductive screw, the conductive screw penetrates out of the ceramic nut, and the ceramic nut is screwed in the two electrode holes on the integrated cover plate; the ceramic box body comprises a ceramic square barrel, a skirt edge and reinforcing ribs, the reinforcing ribs are arranged at the joint of the ceramic square barrel and the skirt edge, and a plurality of through holes are arranged on each skirt edge so as to be in sealing connection with the integrated cover plate.
2. The electrode heating system using a ceramic cabinet according to claim 1, wherein: through holes with the same positions as the skirt edges of the ceramic box bodies are sequentially arranged on the integrated cover plate, and the integrated cover plate and the ceramic box bodies are fixedly connected through screws after silica gel base plates are additionally arranged.
3. The electrode heating system using a ceramic cabinet according to claim 1, wherein: the integrated cover plate is made of stainless steel.
4. The electrode heating system using a ceramic cabinet according to claim 1, wherein: the pressure gauge, the water filling port, the pressure release valve and the vacuum valve are connected with the cover plate through threads.
5. The electrode heating system using a ceramic cabinet according to claim 1, wherein: and a power regulator is connected between the combined electrode and the main relay, the power regulator is connected with a control circuit, the control signal output end of the control circuit is connected with the main relay, and the signal input end of the control circuit is connected with a water flow sensor and a temperature sensor which are arranged at the water inlet end and the water outlet end of each spiral heat exchange tube.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910374437.4A CN110173892B (en) | 2019-05-07 | 2019-05-07 | Electrode heating device adopting ceramic box body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910374437.4A CN110173892B (en) | 2019-05-07 | 2019-05-07 | Electrode heating device adopting ceramic box body |
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| CN110173892A CN110173892A (en) | 2019-08-27 |
| CN110173892B true CN110173892B (en) | 2021-04-30 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011202894A (en) * | 2010-03-26 | 2011-10-13 | Kenji Umetsu | Heat exchange method |
| CN106439988A (en) * | 2016-11-09 | 2017-02-22 | 北京瑞特爱能源科技股份有限公司 | Building-integrated electrode heating and heat storage device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007278841A (en) * | 2006-04-06 | 2007-10-25 | Nippon Telegr & Teleph Corp <Ntt> | System for detecting amount of stored heat |
| CN102143620A (en) * | 2010-10-22 | 2011-08-03 | 江林 | Method for improving electrothermal efficiency of electrothermal medium in electrode type electric water heater |
| CN202532712U (en) * | 2012-03-22 | 2012-11-14 | 浙江中广电器有限公司 | Fast dismounting type air energy water heater water tank with internally installed coil pipe |
| CN203719100U (en) * | 2014-01-14 | 2014-07-16 | 范志立 | Instant heating type heater |
| CN206449622U (en) * | 2016-12-28 | 2017-08-29 | 杭州华源前线能源设备有限公司 | Electric pole type hot-water boiler circulation process system |
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2019
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011202894A (en) * | 2010-03-26 | 2011-10-13 | Kenji Umetsu | Heat exchange method |
| CN106439988A (en) * | 2016-11-09 | 2017-02-22 | 北京瑞特爱能源科技股份有限公司 | Building-integrated electrode heating and heat storage device |
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