CN110397905A - A kind of variable-frequency electromagnetic heating steam engine and scale detection method - Google Patents
A kind of variable-frequency electromagnetic heating steam engine and scale detection method Download PDFInfo
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- CN110397905A CN110397905A CN201910792791.9A CN201910792791A CN110397905A CN 110397905 A CN110397905 A CN 110397905A CN 201910792791 A CN201910792791 A CN 201910792791A CN 110397905 A CN110397905 A CN 110397905A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 53
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 22
- 239000000498 cooling water Substances 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000000523 sample Substances 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 4
- 238000009841 combustion method Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 230000003020 moisturizing effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 238000010025 steaming Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 238000011897 real-time detection Methods 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 description 14
- 230000017525 heat dissipation Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 208000033748 Device issues Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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- 229910052737 gold Inorganic materials 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
- F22B1/281—Methods of steam generation characterised by form of heating method in boilers heated electrically other than by electrical resistances or electrodes
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/54—De-sludging or blow-down devices
-
- 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
Abstract
The invention proposes a kind of variable-frequency electromagnetics to heat steam engine, including water tank, radiator, cooling water pump, high pressure water-injection pump, water inlet pipe and vapor can, water tank one end connects external running water pipe by inlet water solenoid valve, cold water in water tank is transported to water inlet pipe by high pressure water-injection pump by the other end, water inlet pipe upper end is equipped with water outlet, the single or multiple electromagnetic induction heaters connected in parallel or series are connected between water outlet and vapor can, it further include frequency converter, current detection means and control panel, current detection means is for acquiring each line current signal of inverter input and being transferred to control panel.The present invention also provides a kind of scale detection methods of frequency converter electromagnetic heating steam machine.The present invention, which heats water after being powered using electromagnetic coil and radiator is passed to recirculated cooling water and worked to frequency converter, to radiate, it is structurally reasonable, it is energy-saving, detected by real-time detection electromagnetic heating current value abnormal conditions scale in electromagnetic heating pipeline whether accumulate it is exceeded.
Description
Technical field
The present invention relates to electromagnetic heating technique field, in particular to a kind of variable-frequency electromagnetic heating steam engine and scale detection side
Method.
Background technique
Electromagnetic heating technique is exactly to be heated using " vortex " principle physically to metal material, i.e. high-frequency ac
Electric current generates alternating magnetic field by electromagnetic coil, when there is metal material to be placed in the magnetic line of force coverage area of the coil, gold
Belong to body to be cut by alternating magnetic field, surface generates alternating current (being vortexed) and generates heat rapidly.Since electromagnetic heating steam machine heats
The pipe range phase impregnate in water or it is exposed be easy scaling in water vapour and influence heat exchanger effectiveness, but to detect electromagnetic heating
Scale situation in pipeline usually will periodically open heating pipe and be manually checked, time-consuming and laborious, while be easy to cause equipment
Operation irregularity or damage.
Summary of the invention
More than solving the problems, such as, it is fast that the present invention provides a kind of structurally reasonable, high reliablity, steam production rate, steams
The output of vapour continuous-stable, thermal conversion efficiency is high, and the variable-frequency electromagnetic with power saving function heats steam engine, and the present invention also provides one
The scale detection method of the automatic detection variable-frequency electromagnetic heating steam engine of kind, method simple practical, the scale of energy accurate judgement are deposited
The reliability of equipment is being improved, while reducing maintenance cost.
The technical scheme of the present invention is realized as follows:
The invention discloses a kind of variable-frequency electromagnetics to heat steam engine, including water tank, radiator, cooling water pump, high pressure injection
Water pump, water inlet pipe and vapor can, described water tank one end connects external running water pipe by inlet water solenoid valve and carries out moisturizing, another
Cold water in the water tank is transported to the water inlet pipe by high pressure water-injection pump by one end, and the water inlet pipe upper end is equipped with water outlet
Mouthful, the single or multiple electromagnetic induction heaters connected in parallel or series, the steaming are connected between the water outlet and vapor can
Vapour tank top is equipped with steam port, and the steam port is equipped with steam electromagnetic valve, and cooling water is equipped between the water tank and radiator
Pump, the cooling water pump are used to for the cold water in the water tank being pumped into the cavity of the radiator and return to institute by water pipe
It states in water tank, which is characterized in that further include frequency converter, current detection means and control panel, in the radiating surface of the radiator
It is close to frequency converter, the inverter input connects power module, and output end is added by connecting wire and the electromagnetic induction
Hot device electrical connection, each route that the inverter input connects the power module are equipped with for detecting frequency converter input
The current detection means of electric current, the current detection means are mutual inductor, and the current signal of the mutual inductor detection is transmitted to institute
State control panel.
Further, the control panel includes current acquisition module, current conversion module, comparator module and driving mould
Block,
The current acquisition module is used to acquire the current-mode analog quantity of the mutual inductor conveying；
The current conversion module is used to the current-mode analog quantity being converted into current digital quantity；
The comparator module is used to for received current digital quantity being compared with the current digital quantity prior value of standard,
If being higher than the current digital quantity preset value of standard, is sent to the drive module and stop heating signal；
The drive module, when receiving stopping heating signal, is stopped immediately for driving frequency converter to export frequency variation signal
Only frequency converter exports frequency variation signal to the electromagnetic induction heater.
Further, the control panel further includes alarm module, and the alarm module is for receiving the comparator module
The stopping heating signal is simultaneously converted into snaking alarm signal by the stopping heating signal of sending, and the snaking alarm signal is sent to
Alarm prompt carries out scale cleaning.
Further, check-valves, the water inlet pipe are equipped between the water inlet pipe end inlet and the high pressure water-injection pump
End inlet corresponds to the other end equipped with soil cleaning port, and the water inlet bottom of the tube is equipped with drainage valve.
Further, pressure sensor and temperature sensor are equipped on the vapor can, the pressure sensor is used for
It acquires the pressure value in the vapor can and the pressure value is transmitted to the control panel and handle, the temperature sensor is used
In the vapor (steam) temperature acquired in the vapor can and the temperature signal is transmitted to the control panel processing.
Further, a no less than water level probe, the water level probe and the control are installed on the vapor can
Making sheet electrical connection, and the water level for detecting its vapor can prevents electromagnetic induction heater dry combustion method.
Further, pressure gauge and mechanical pressure release valve, the pressure gauge and machine are also successively arranged at the top of the vapor can
Tool relief valve is connected to vapor can respectively.
It further, further include touch display screen, the touch display screen is electrically connected with control panel and for realizing man-machine
Interaction.
Implement a kind of variable-frequency electromagnetic heating steam engine of the invention, there is technical effect beneficial below:
The present invention using electromagnetic coil be powered after to water flow carry out electromagnetic heating and to radiator pass to recirculated cooling water to
Frequency converter work heat dissipation carries out cooling and heat dissipation to electronic heating component again simultaneously to preheating cold water, makes full use of electric energy, and steam
Formation speed is fast, continuous-stable output, sanitation and hygiene.
Using a kind of scale detection method of variable-frequency electromagnetic heating steam engine of above-mentioned variable-frequency electromagnetic heating steam engine, including
Following steps:
Step 1: acquiring power module input by current detection means before variable-frequency electromagnetic heating steam machine equipment factory
To each route of inverter input current value in normal work, and stores to control panel and be set as normalized current preset value I1；
Step 2: equipment is input to inverter input work in use, acquiring power module by current detection means
When line electricity flow valuve I2, the current value I2It is sent to controller and normalized current preset value I1It is compared, when operating route
Current value I2More than or equal to 1.1 times normalized current preset value I1When, the controller is issued to frequency converter stops heating signal,
Scale alarm signal is issued to alarm simultaneously, prompts scale cleaning；
Step 3: equipment is out of service, is restarted after the scale in electromagnetic induction heater pipeline to be cleaned, work as I2It is small
In 1.1 times of I1When value, the controller issues heating signal driving electromagnetic induction heater work to frequency converter, while to alarm
Device issues scale alarm release signal.
Implement a kind of variable-frequency electromagnetic heating steam engine scale detection method of the invention, there is technology effect beneficial below
Fruit:
Be different from existing variable-frequency electromagnetic heating steam engine the detection of scale situation is generallyd use shut down manual inspection mode and
Time-consuming and laborious deficiency, the present invention are transported to each line electricity flow valuve of electromagnetic heater beyond normalized current using detection frequency converter
When value 10%, scale abnormal alarm signal is issued, detection method is simple, high reliablity, and testing cost is low.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is that a kind of variable-frequency electromagnetic of the embodiment of the present invention heats steam engine illustrative view of functional configuration；
Fig. 2 is that a kind of variable-frequency electromagnetic of the embodiment of the present invention heats control panel functional diagram in steam engine.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1 and Fig. 2, the embodiment of the present invention, a kind of variable-frequency electromagnetic heating steam engine, including water tank 1, heat dissipation
Device 2, cooling water pump 3, high pressure water-injection pump 4, water inlet pipe 5 and vapor can 6,1 one end of water tank connect outside by inlet water solenoid valve 7
Running water pipe carries out moisturizing, and cold water in water tank 1 is transported to water inlet pipe 5, water inlet pipe 5 by high pressure water-injection pump 4 by the other end
Upper end is equipped with water outlet, and the single or multiple electromagnetic induction heatings connected in parallel or series are connected between water outlet and vapor can 6
Device 8 is equipped with steam port at the top of vapor can 6, and steam port is equipped with steam electromagnetic valve 9, and cooling is equipped between water tank 1 and radiator 2
Water pump 3, cooling water pump 3 are used to for the cold water in the water tank 1 being pumped into the cavity of radiator 2 and return to water storage by water pipe
In case 1, variable-frequency electromagnetic heating steam engine further includes frequency converter 10, current detection means 11 and control panel 12, in dissipating for radiator 2
Frequency converter 10 is close to for the work heat dissipation of frequency converter 10 in hot face, and 10 input terminal of frequency converter connects power module 23, and output end is logical
It crosses connecting wire to be electrically connected with electromagnetic induction heater 8, power module 23 is connected to each route of 10 input terminal of frequency converter and is equipped with
For detecting the current detection means 11 of 10 input current of frequency converter, current detection means 11 is mutual inductor, mutual inductor detection
Current signal be transmitted to control panel 12.
According to a specific embodiment, which includes current acquisition module 121, current conversion module 122, ratio
Compared with device module 123 and drive module 124,
The current acquisition module 121 is used to acquire the current-mode analog quantity of the mutual inductor conveying；
The current conversion module 122 is used to the current-mode analog quantity being converted into current digital quantity；
The comparator module 123 is for comparing the current digital quantity prior value of received current digital quantity and standard
Compared with if being higher than the current digital quantity preset value of standard, to the drive module 124 transmission stopping heating signal；
The drive module 124, when receiving stopping heating signal, is stood for driving frequency converter 10 to export frequency variation signal
Stop frequency converter 13 and exports frequency variation signal to the electromagnetic induction heater 8.
According to a specific embodiment, which further includes alarm module 125, and alarm module 125 is for receiving
The stopping heating signal is simultaneously converted into snaking alarm signal, snaking alarm by the stopping heating signal of the sending of comparator module 123
Signal is sent to the prompt of alarm 13 and carries out scale cleaning, at this moment requires to shut down variable-frequency electromagnetic heating steam engine and carries out scale
Cleaning.
According to a specific embodiment, check-valves 14 is equipped between 5 end inlet of water inlet pipe and high pressure water-injection pump 4,
5 end inlet of water inlet pipe corresponds to the other end equipped with soil cleaning port 15, and soil cleaning port 15 is for clearing up scale and other impurity；Water inlet pipe 5
Bottom is equipped with drainage valve 16 and exhausts waste water in water inlet pipe 5 when drainage valve 16 is used for maintenance down, prevent waste water to pipeline
It causes to corrode.
According to a specific embodiment, pressure sensor 17 and temperature sensor 18 are equipped on vapor can 6, pressure passes
Sensor 17 is handled for acquiring the pressure value in vapor can 6 and the pressure value being transmitted to control panel 12, temperature sensor
18 are handled for acquiring the vapor (steam) temperature in vapor can 6 and the temperature signal being transmitted to control panel 12.
According to a specific embodiment, a no less than water level probe 19, water level probe 19 are installed on vapor can 6
It is electrically connected with control panel 12, and the water level for detecting its vapor can 6 prevents 8 dry combustion method of electromagnetic induction heater, 6 indsole of vapor can
Portion must keep certain water level, to prevent the electromagnetic induction heater 8 for being connected to 6 lower part of vapor can be in dry-fire condition, steam
6 inner cavity top of vapour tank is steam storage unit, and steam is exported from the steam electromagnetic valve 9 for being set to 6 top of vapor can.
According to a specific embodiment, it is also successively arranged pressure gauge 20 and mechanical pressure release valve 21 at 6 top of vapor can, is pressed
Power table 20 and mechanical pressure release valve 21 are connected to vapor can 6 respectively, and the mechanical pressure release valve 21 of setting is for 6 pressure of vapor can beyond peace
Automatically pressure is released when total head, thus is played a protective role.
According to a specific embodiment, it further includes touch display screen 22, touch display screen that variable-frequency electromagnetic, which heats steam engine,
22 are electrically connected and for realizing human-computer interaction with control panel 12.
Implement a kind of variable-frequency electromagnetic heating steam engine of the invention, there is technical effect beneficial below:
The present invention using electromagnetic coil be powered after to water flow carry out electromagnetic heating and to radiator pass to recirculated cooling water to
Frequency converter work heat dissipation carries out cooling and heat dissipation to electronic heating component again simultaneously to preheating cold water, makes full use of electric energy, and steam
Formation speed is fast, continuous-stable output, sanitation and hygiene.
It further explains:
It is different from traditional water-immersed heater heating system of electric heating steam engine energization, the automatic frequency conversion for detecting scale
Electromagnetic heating steam machine uses electromagnetic induction heating, and electromagnetic coil is set to ceramic tube outer surface, and electromagnetic coil and ceramic tube
Between be equipped with empire cloth, which has insulation and an insulation effect, and electromagnetic coil, which is powered, to be generated high frequency magnetic field and act on height and lead
On magnetic metallic heating body (metal barred body), heater is arranged in ceramic tube, between water flow between the ceramic tube and heater
Gap, generates eddy-current heating in metal in high frequency magnetic field, directly carries out heat exchange, heater with by the water flow in water flow gap
Using metal barred body, the metal outer surface of rod is smooth, and smooth metal outer surface of rod and lubricious ceramic pipe internal surface are not
It is also easy to produce scale, and heating speed is fast, realizes complete electricity separation, securely and reliably.
Electromagnetic induction heater includes electromagnetic coil, heater made of ceramic tube and metal material, the ceramic tube
Both ends are respectively provided with the flange radially extended, and the heater is solid stick, and the heater is arranged in the ceramic tube
It is interior, there is water flow gap between the ceramic tube and heater；Gap between the ceramic tube and heater one end enters for cold water
Mouthful, the gap between the ceramic tube and the heater other end is hot water outlet, the both ends and diameter of the ceramic tube and heater
It supports and cooperates to support plate, connected between the support plate by support rod, the outer of the ceramic tube is arranged in the electromagnetic coil
On surface.Wherein, electromagnetic induction heater both ends pass through hose and connect with water inlet pipe and steam pipe, when steam engine whole equipment
The sealing performance of its junction will not be influenced when vibration, guarantee that equipment is run steadily in the long term.
Variable-frequency electromagnetic heats steam engine and utilizes electromagnetic induction principle, the heater of thermal energy is converted electrical energy into, in controller
Interior that the alternating voltage of 50HZ/60HZ is become direct current by power supply device, direct current, which is converted into frequency, using frequency converter is
The high-frequency alternating current of 10KHZ-40KHZ；High-frequency alternating current flows through the electromagnetic coil (high frequency lead) being wrapped in outside ceramic tube, high speed
Countless small vortex are generated when heater (metal barred body) inside the magnetic force line cutting generated inside changing magnetic field, keep water rapid
Heating, achievees the effect that quickly to heat water.Signal is changed extremely by the current value flowed through in detection electromagnetic coil, if it is electric
When stream exceeds the 10% of normal current, determines the super arm's length standard of scale build-up in its electromagnetic heating tube, to shut down cleaning.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, using all or part of implementation, any modification, equivalent replacement, improvement and so on should be included in this hair
Within bright protection scope.
Claims (9)
1. a kind of variable-frequency electromagnetic heats steam engine, including water tank, radiator, cooling water pump, high pressure water-injection pump, water inlet pipe and steaming
Vapour tank, described water tank one end connect external running water pipe by inlet water solenoid valve and carry out moisturizing, and the other end passes through high pressure injection
Cold water in the water tank is transported to the water inlet pipe by water pump, and the water inlet pipe upper end is equipped with water outlet, the water outlet and
It is connected to the single or multiple electromagnetic induction heaters connected in parallel or series between vapor can, is equipped with steam at the top of the vapor can
Mouthful, the steam port is equipped with steam electromagnetic valve, and cooling water pump is equipped between the water tank and radiator, and the cooling water pump is used
It is returned in the water tank in the cavity that the cold water in the water tank is pumped into the radiator and by water pipe, feature
It is, further includes frequency converter, current detection means and control panel, be close to frequency converter, the change in the radiating surface of the radiator
Frequency device input terminal connects power module, and output end is electrically connected by connecting wire with the electromagnetic induction heater, the change
Each route that frequency device input terminal connects the power module is equipped with the current detecting for detecting the frequency converter input current and fills
It sets, the current detection means is mutual inductor, and the current signal of the mutual inductor detection is transmitted to the control panel.
2. variable-frequency electromagnetic according to claim 1 heats steam engine, which is characterized in that the control panel includes current acquisition
Module, current conversion module, comparator module and drive module,
The current acquisition module is used to acquire the current-mode analog quantity of the mutual inductor conveying；
The current conversion module is used to the current-mode analog quantity being converted into current digital quantity；
The comparator module is for received current digital quantity to be compared with the current digital quantity prior value of standard, if high
In the current digital quantity preset value of standard, is then sent to the drive module and stop heating signal；
The drive module is for driving frequency converter to export frequency variation signal, when receiving stopping heating signal, stops becoming immediately
Frequency device exports frequency variation signal to the electromagnetic induction heater.
3. variable-frequency electromagnetic according to claim 2 heats steam engine, which is characterized in that the control panel further includes alarm mould
Block, the alarm module are used to receive the stopping heating signal that the comparator module issues and convert the stopping heating signal
At snaking alarm signal, the snaking alarm signal is sent to alarm prompt and carries out scale cleaning.
4. variable-frequency electromagnetic according to claim 1 heats steam engine, which is characterized in that the water inlet pipe end inlet and institute
It states and is equipped with check-valves between high pressure water-injection pump, the water inlet pipe end inlet corresponds to the other end equipped with soil cleaning port, the water inlet pipe
Bottom is equipped with drainage valve.
5. variable-frequency electromagnetic according to claim 1 heats steam engine, which is characterized in that be equipped with pressure on the vapor can
Sensor and temperature sensor, the pressure sensor is for acquiring the pressure value in the vapor can and transmitting the pressure value
It is handled to the control panel, the temperature sensor is for acquiring the vapor (steam) temperature in the vapor can and believing the temperature
Number it is transmitted to the control panel processing.
6. variable-frequency electromagnetic according to claim 1 heats steam engine, which is characterized in that be equipped with not on the vapor can
Less than one water level probe, the water level probe are electrically connected with the control panel, and the water level for detecting its vapor can prevents
Electromagnetic induction heater dry combustion method.
7. variable-frequency electromagnetic according to claim 1 heats steam engine, which is characterized in that at the top of the vapor can also successively
Equipped with pressure gauge and mechanical pressure release valve, the pressure gauge and mechanical pressure release valve are connected to vapor can respectively.
8. variable-frequency electromagnetic according to claim 1 heats steam engine, which is characterized in that it further include touch display screen, it is described
Touch display screen is electrically connected with control panel and for realizing human-computer interaction.
9. a kind of using a kind of scale detection method of variable-frequency electromagnetic heating steam engine described in claim 1, which is characterized in that
Include the following steps:
Step 1: acquiring power module before variable-frequency electromagnetic heating steam machine equipment factory by current detection means and being input to change
Each route of frequency device input terminal current value in normal work, and store to control panel and be set as normalized current preset value I1；
Step 2: equipment is in use, acquire line when power module is input to inverter input work by current detection means
Road current value I2, the current value I2It is sent to controller and normalized current preset value I1It is compared, when operating line current
Value I2More than or equal to 1.1 times normalized current preset value I1When, the controller is issued to frequency converter stops heating signal, simultaneously
Scale alarm signal is issued to alarm, prompts scale cleaning；
Step 3: equipment is out of service, is restarted after the scale in electromagnetic induction heater pipeline to be cleaned, work as I2Less than 1.1
Times I1When value, the controller issues heating signal driving electromagnetic induction heater work to frequency converter, while sending out to alarm
Scale alarm release signal out.
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| CN201910792791.9A CN110397905A (en) | 2019-08-26 | 2019-08-26 | A kind of variable-frequency electromagnetic heating steam engine and scale detection method |
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| CN201910792791.9A CN110397905A (en) | 2019-08-26 | 2019-08-26 | A kind of variable-frequency electromagnetic heating steam engine and scale detection method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397906A (en) * | 2019-08-27 | 2019-11-01 | 深圳市东特工程设备有限公司 | A kind of energy-saving frequency conversion electromagnetic heating steam machine |
| CN110701593A (en) * | 2019-11-12 | 2020-01-17 | 深圳市东特工程设备有限公司 | Energy-saving frequency-conversion electromagnetic heating steam engine |
| CN113531642A (en) * | 2021-07-28 | 2021-10-22 | 江西摩力斯科技股份有限公司 | Can assemble high-power frequency conversion electromagnetism heating equipment that can make up |
| CN113803643A (en) * | 2020-06-17 | 2021-12-17 | 杭州九阳小家电有限公司 | Pipeline detection method of food processor |
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| CN110397906A (en) * | 2019-08-27 | 2019-11-01 | 深圳市东特工程设备有限公司 | A kind of energy-saving frequency conversion electromagnetic heating steam machine |
| CN110701593A (en) * | 2019-11-12 | 2020-01-17 | 深圳市东特工程设备有限公司 | Energy-saving frequency-conversion electromagnetic heating steam engine |
| CN113803643A (en) * | 2020-06-17 | 2021-12-17 | 杭州九阳小家电有限公司 | Pipeline detection method of food processor |
| CN113531642A (en) * | 2021-07-28 | 2021-10-22 | 江西摩力斯科技股份有限公司 | Can assemble high-power frequency conversion electromagnetism heating equipment that can make up |
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