CN109838772A - A kind of constant temperature and pressure steam boiler controlled by PLC - Google Patents
A kind of constant temperature and pressure steam boiler controlled by PLC Download PDFInfo
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- CN109838772A CN109838772A CN201711203255.8A CN201711203255A CN109838772A CN 109838772 A CN109838772 A CN 109838772A CN 201711203255 A CN201711203255 A CN 201711203255A CN 109838772 A CN109838772 A CN 109838772A
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Abstract
The invention discloses a kind of constant temperature and pressure steam boilers controlled by PLC, being arranged one has the tank body of arch furnace bottom as boiler body, in the bottom end of boiler body, installation controls the combustion chamber of air inlet by electric control valve, the vapor discharge channel of a boiler body buffering gas tank in parallel, when the air pressure in boiler body is excessive, import in buffering gas tank, when minibuffer gas tank is crossed in air pressure, then back feeding steam guarantees stable pressure output into vapor discharge channel, two electric water level gauges are installed in boiler body inner cavity and water thermometer detects water level therein respectively, water temperature information, and PLC module is installed by electric cabinet in the side of boiler body, PLC module controls the working condition of air blower in electric control valve and combustion chamber by several relays respectively, so that the air pressure all-the-time stable of boiler exit gas mouth is convenient in a steady state value Steam user's normal use, and the energy and user's workload have been saved, there is good practical value.
Description
Technical field
The present invention relates to a kind of steam boiler, in particular to a kind of constant temperature and pressure steam boiler controlled by PLC.
Background technique
Boiler is to heat the water body of low temperature, becomes a kind of equipment of high temperature water body or high-temperature vapor, it is widely applied
In heating, power generation, energy transport etc..One important role of boiler is to generate steam, then utilizes steam to do work.
The boiler of sole duty production steam is also known as steam boiler.Current steam boiler operational process be added in the boiler it is a certain amount of
Then water body heating is made vapor, then vapor is discharged and is done manual work, therefore the steam generated in boiler is preferably one by water
Steady state value, steam pressure is excessive, will lead to mechanical equipment overload, be easy to cause equipment to damage or the bursting of boilers, and steam pressure
It is too small and will lead to output power deficiency, it is insufficient to influence mechanical normal operation or thermal energy supply.In order to enable the pressure value of boiler
Not exceeded, engineering staff uses many methods, using it is most common be to utilize an exhaust valve, pressing using relief valve
Power is more than automatic opening after warning value, and steam and extra pressure is discharged, so will result in the waste of the energy and water.And it is right
In insufficient pressure then using increase combustion power method, therefore traditional boiler pressure be in a biggish section repeatedly
Concussion so not only affects the demand of steam user, but also brings very big operational inconvenience to steam producers.
PLC control technology is widely used in numerous fields at present.PLC control technology is exclusively in industrial environment
The digital operation electronic system of lower application and design.It uses a kind of programmable memory, and storage executes inside it
The instruction of the operations such as logical operation, sequential control, timing, counting and arithmetical operation, it is defeated by digital or analog input
Various types of mechanical equipments or production process are controlled out.Therefore PLC can receive external signal instruction, and to various fingers
Order is analyzed and processed, and in conjunction with the program of itself, then exports control command, and corresponding electric appliance, machine-building is instructed to be moved
Make, to meet the use demand of people.Therefore the producer and related technical personnel of boiler actively consider to use PLC technology
Automatically boiler is controlled, so that the temperature and pressure of high-pressure boiler be adjusted automatically, efficiently, improves steam boiler
Efficiency, it is energy saving.
Summary of the invention
The invention proposes a kind of constant temperature and pressure steam boilers controlled by PLC, solve current traditional boiler and exist
The pressure transient that steam is led to the problem of in operational process, in the gas outlet of a boiler surge tank in parallel, at the bottom of boiler
End installation controls the combustion chamber of air inlet by regulating valve, water-level gauge and water thermometer is installed respectively in the boiler, then in boiler
PLC control unit is installed in side, and PLC control unit receives water-level gauge, the water temperature of water thermometer and pressure gauge monitoring, pressure signal,
Then it is adjusted according to the corresponding regulating valve of itself program instruction, so that the air pressure all-the-time stable of boiler exit gas mouth is in a perseverance
Definite value.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
The present invention it is a kind of by PLC control constant temperature and pressure steam boiler, including boiler body, combustion chamber, buffering gas tank and
PLC module, the boiler body are the cylinder tank bodies an of vertically-arranged, and the bottom end of the boiler body is equipped with arch furnace bottom, institute
The top conducting for stating arch furnace bottom is connected with exhaust manifolds, and the exhaust manifolds are through the center of the boiler body to its top
End constitutes exhaust outlet, and the bottom end of the boiler body is connected with the combustion chamber, passes through bracket in the middle part of the combustion chamber inner cavity
It is fixedly installed with burning spray head, the side of the combustion chamber bottom end connects through fuel conductor, the fuel conductor conducting is connected with
Connect the import of the burning spray head, the middle part concatenation of the fuel conductor is equipped with electric control valve, the combustion chamber inner cavity it is another
Side is equipped with air blower, and the air outlet of the air blower is directed toward the bottom end of the burning spray head, the boiler body top
Side conducting is equipped with water inlet line, wears in the water inlet line and is connected to low water level meter, high water level meter and water thermometer, the low water
Position meter is located at the bottom end of the boiler body inner cavity, and the high water level meter is located at the top of the boiler body inner cavity, the water
For temperature meter between the low water level meter and the high water level meter, the other side conducting on the boiler body top is equipped with steam
Discharge tube, the side of the vapor discharge channel have been installed in parallel the buffering gas tank, the side conducting of the buffering gas tank
It is connected with electronic barometer, the side of the boiler body is fixedly installed with control cabinet by support rod, and the control cabinet passes through
Circuit board is equipped with the PLC module and several relays, the low water level meter, the high water level meter, the water thermometer and institute
The signal input part that the PLC module is electrically connected in electronic barometer is stated, the instruction output end of the PLC module is electric respectively
Property connect and control several relays, one end of several relays is electrically connected power supply, and institute is electrically connected in the other end
State electric control valve and the air blower.
As a preferred technical solution of the present invention, the side of the burning spray head is equipped with telescopic electronic ignition
Device, the PLC module are electrically connected by the relay and control the ignition.
As a preferred technical solution of the present invention, the outer surface cladding of the boiler body and the buffering gas tank is set
There is insulating
As a preferred technical solution of the present invention, the bottom end conducting of the boiler body is equipped with sewage draining valve.
As a preferred technical solution of the present invention, the burning spray head be semicircle sphere structure and with the combustion chamber
Dome keep the same spacing.
As a preferred technical solution of the present invention, the liner of the boiler body and the exhaust manifolds are by stainless steel
Material is made.
The beneficial effects of the present invention are: structure of the invention it is accurate, using simple, solve current traditional boiler and transporting
Leads to the problem of the pressure transient of steam during row, being arranged one has the tank body of arch furnace bottom as boiler body,
The bottom end installation of boiler body controls the combustion chamber of air inlet by electric control valve, and the vapor discharge channel of boiler body is one in parallel
Gas tank is buffered, when the air pressure in boiler body is excessive, is imported in buffering gas tank, when minibuffer gas tank then back feeding steam is crossed in air pressure
Guarantee stable pressure output into vapor discharge channel, two electric water level gauges and water temperature are installed in boiler body inner cavity
Meter detects water level therein, water temperature information respectively, and installs PLC module by electric cabinet in the side of boiler body, and PLC module is led to
The working condition that several relays control air blower in electric control valve and combustion chamber respectively is crossed, when air pressure is excessive or water temperature mistake
Height is then reduced the input quantity of fuel by electric control valve, otherwise just increases input quantity, so that the air pressure of boiler exit gas mouth is steady always
It is scheduled on a steady state value, has saved the energy and workload, also enables the steam condition of output more steady.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is subjective schematic structural cross-sectional view of the invention;
Fig. 2 is circuit connection control schematic diagram of the invention;
In figure: 1, boiler body;2, arch furnace bottom;3, exhaust manifolds;4, combustion chamber;5, burn spray head;6, fuel is led
Pipe;7, electric control valve;8, air blower;9, water inlet line;10, low water level meter;11, high water level meter;12, water thermometer;13, steam is arranged
Put pipeline;14, gas tank is buffered;15, electronic barometer;16, control cabinet;17, PLC module;18, relay;19, electronic ignition
Device;20, insulating;21, sewage draining valve.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment 1
As shown in Figs. 1-2, the present invention provide it is a kind of by PLC control constant temperature and pressure steam boiler, including boiler body 1,
Combustion chamber 4, buffering gas tank 14 and PLC module 17, boiler body 1 are the cylinder tank bodies an of vertically-arranged, and the bottom end of boiler body 1 is set
There is arch furnace bottom 2, the top conducting of arch furnace bottom 2 is connected with exhaust manifolds 3, and exhaust manifolds 3 are in boiler body 1
The heart to its top constitutes exhaust outlet, and the bottom end of boiler body 1 connects combuster 4, and the middle part of 4 inner cavity of combustion chamber is solid by bracket
Dingan County connects burning through fuel conductor 6, the conducting of fuel conductor 6 is connected with equipped with burning spray head 5, the side of 4 bottom end of combustion chamber
The middle part concatenation of the import of spray head 5, fuel conductor 6 is equipped with electric control valve 7, and the other side of 4 inner cavity of combustion chamber is equipped with air blast
Machine 8, the air outlet of air blower 8 are directed toward the bottom end of burning spray head 5, and the side conducting on 1 top of boiler body is equipped with water inlet line
9, it wears in water inlet line 9 and is connected to low water level meter 10, high water level meter 11 and water thermometer 12, low water level meter 10 is located in boiler body 1
The bottom end of chamber, high water level meter 11 are located at the top of 1 inner cavity of boiler body, and water thermometer 12 is located at low water level meter 10 and high water level meter 11
Between, the other side conducting on 1 top of boiler body is equipped with vapor discharge channel 13, the side parallel connection peace of vapor discharge channel 13
Equipped with buffering gas tank 14, the side conducting of buffering gas tank 14 is connected with electronic barometer 15, and the side of boiler body 1 passes through support
Bar is fixedly installed with control cabinet 16, and control cabinet 16 is equipped with PLC module 17 and several relays 18, low water level meter by circuit board
10, the signal input part of PLC module 17, PLC module is electrically connected in high water level meter 11, water thermometer 12 and electronic barometer 15
17 instruction output end is electrically connected and controls several relays 18, and one end of several relays 18 is electrically connected power supply,
Electric control valve 7 and air blower 8 is electrically connected in the other end.
The working principle of the invention and process are: water is injected into the inner cavity of boiler body 1 by water inlet line 9 first,
Supreme water-level gauge 11 stops after issuing water level signal, then inputs fuel into burning spray head 5 by electric control valve 7 and lights,
The water in boiler body 1 is heated at this time becomes steam, and steam is exported by vapor discharge channel 13, is done to mechanical or heating installation
Pressure information is then sent in PLC module 17 when electronic barometer 15 detects the hypertonia in boiler body 1 by function,
PLC module 17 opens buffering gas tank 14 in parallel therewith by relay 18 and stores steam, while electric control valve 7 being instructed to reduce combustion
The input quantity of material reduces water vapour supply, and when electronic barometer 15 detects the hypotony in boiler body 1, then unlatching is slow
The steam that qi of chong channel ascending adversely tank 14 stores is added to the output acting of vapor discharge channel 13, and instruction electric control valve 7 increases fuel again at this time
Input quantity increases water vapour supply, so the pressure of steam can be enabled to be maintained in the range of setting, and low water level meter 10 detects
After the signal too low to water level, PLC module 17 then instructs water inlet line 9 to carry out moisturizing to boiler body 1, so with regard to lasting stability
Ensure that normal operation of the present invention.
Further, the side of burning spray head 5 is equipped with telescopic ignition 19, and PLC module 17 passes through relay 18
It is electrically connected and is controlled ignition 19, automatic ignition is carried out to burning spray head 5.
Further, boiler body 1 ease up qi of chong channel ascending adversely tank 14 outer surface cladding be equipped with insulating 20, insulating 20
On the one hand it saves boiler body 1 to ease up the temperature of qi of chong channel ascending adversely tank 14, air pressure balance is kept, on the other hand also to the people on periphery of the present invention
Group is isolated and is protected.
Further, the bottom end conducting of boiler body 1 is equipped with sewage draining valve 21, and sewage draining valve 21 is kept for scale to be discharged
The good heat transfer efficiency of boiler body 1.
Further, burning spray head 5 is semicircle sphere structure and keeps the same spacing with the dome of combustion chamber 4, for protecting
Optimal heat transfer is held, the thermal energy that fuel generates is imported to greatest extent in the water that boiler body 1 contains.
Further, the liner of boiler body 1 and exhaust manifolds 3 are made of stainless steel material, and stainless steel material has good
Corrosion resistance, therefore can keep the present invention worked normally under lasting combustion state.
Structure of the invention is accurate, using simple, and setting one has the tank body of arch furnace bottom 2 as boiler body 1, in pot
The bottom end installation of furnace main body 1 controls the combustion chamber 4 of air inlet by electric control valve 7, and the vapor discharge channel 13 of boiler body is in parallel
One buffering gas tank 14 imports in buffering gas tank 14, when minibuffer gas tank 14 is crossed in air pressure when the air pressure in boiler body 1 is excessive
Then back feeding steam guarantees stable pressure output into vapor discharge channel 13, and two electricity are installed in 1 inner cavity of boiler body
Sub- water-level gauge and water thermometer 12 detect water level therein, water temperature information respectively, and pass through electric cabinet in the side of boiler body and install
PLC module 17, PLC module 17 control the work shape of air blower in electric control valve 7 and combustion chamber 4 by several relays respectively
State, when air pressure is excessive or water temperature over-high, then by the input quantity of the reduction fuel of electric control valve 7, on the contrary just increase input quantity, so that
The air pressure all-the-time stable of boiler exit gas mouth has saved the energy and workload in a steady state value, also enables the steam condition of output more
What is added is steady, solves the problems, such as that current traditional boiler generates the pressure transient of steam in the process of running, has very
Good practical value.
Finally, it should be noted that these are only the preferred embodiment of the present invention, it is not intended to restrict the invention, although
Present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, still can be right
Technical solution documented by foregoing embodiments is modified or equivalent replacement of some of the technical features.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (6)
1. a kind of constant temperature and pressure steam boiler controlled by PLC, including boiler body (1), combustion chamber (4), buffering gas tank (14)
With PLC module (17), which is characterized in that the boiler body (1) is the cylinder tank body an of vertically-arranged, the boiler body (1)
Bottom end be equipped with arch furnace bottom (2), the arch furnace bottom (2) top conducting is connected with exhaust manifolds (3), the exhaust
Conduit (3) constitutes exhaust outlet, the bottom end connection of the boiler body (1) through center to its top of the boiler body (1)
Have the combustion chamber (4), is fixed by the bracket in the middle part of combustion chamber (4) inner cavity and burning spray head (5), the burning are installed
Through being connected with fuel conductor (6), fuel conductor (6) conducting connects burning spray head (5) for the side of room (4) bottom end
The middle part concatenation of import, the fuel conductor (6) is equipped with electric control valve (7), the other side installation of combustion chamber (4) inner cavity
Have air blower (8), the air outlet of the air blower (8) is directed toward the bottom end of burning spray head (5), boiler body (1) top
The side conducting at end is equipped with water inlet line (9), is worn in the water inlet line (9) and is connected to low water level meter (10), high water level meter
(11) and water thermometer (12), the low water level meter (10) are located at the bottom end of the boiler body (1) inner cavity, the high water level meter
(11) it is located at the top of the boiler body (1) inner cavity, the water thermometer (12) is located at the low water level meter (10) and the height
Between water-level gauge (11), the other side conducting on boiler body (1) top is equipped with vapor discharge channel (13), the steam
The side of discharge tube (13) has been installed in parallel the buffering gas tank (14), and the side conducting of buffering gas tank (14) is connected with
The side of electronic barometer (15), the boiler body (1) is fixedly installed with control cabinet (16), the control cabinet by support rod
(16) PLC module (17) and several relays (18), the low water level meter (10), the Gao Shui are equipped with by circuit board
The signal of the PLC module (17) is electrically connected in position meter (11), the water thermometer (12) and the electronic barometer (15)
The instruction output end of input terminal, the PLC module (17) is electrically connected and controls several relays (18), it is several it is described after
One end of electric appliance (18) is electrically connected power supply, and the electric control valve (7) and the air blower (8) is electrically connected in the other end.
2. a kind of constant temperature and pressure steam boiler controlled by PLC according to claim 1, which is characterized in that the burning
The side of spray head (5) is equipped with telescopic ignition (19), and the PLC module (17) is electrical by the relay (18)
It connects and controls the ignition (19).
3. a kind of constant temperature and pressure steam boiler controlled by PLC according to claim 1, which is characterized in that the boiler
Main body (1) and the outer surface cladding of buffering gas tank (14) are equipped with insulating (20).
4. a kind of constant temperature and pressure steam boiler controlled by PLC according to claim 1, which is characterized in that the boiler
The bottom end conducting of main body (1) is equipped with sewage draining valve (21).
5. a kind of constant temperature and pressure steam boiler controlled by PLC according to claim 1, which is characterized in that the burning
Spray head (5) is semicircle sphere structure and keeps the same spacing with the dome of the combustion chamber (4).
6. a kind of constant temperature and pressure steam boiler controlled by PLC according to claim 1, which is characterized in that the boiler
The liner and the exhaust manifolds (3) of main body (1) are made of stainless steel material.
Priority Applications (1)
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CN201711203255.8A CN109838772A (en) | 2017-11-27 | 2017-11-27 | A kind of constant temperature and pressure steam boiler controlled by PLC |
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CN201711203255.8A CN109838772A (en) | 2017-11-27 | 2017-11-27 | A kind of constant temperature and pressure steam boiler controlled by PLC |
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CN109838772A true CN109838772A (en) | 2019-06-04 |
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CN201711203255.8A Withdrawn CN109838772A (en) | 2017-11-27 | 2017-11-27 | A kind of constant temperature and pressure steam boiler controlled by PLC |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113654024A (en) * | 2021-08-24 | 2021-11-16 | 北京天衡智联科技有限公司 | Steam boiler pipeline pressure coordinated control system |
-
2017
- 2017-11-27 CN CN201711203255.8A patent/CN109838772A/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113654024A (en) * | 2021-08-24 | 2021-11-16 | 北京天衡智联科技有限公司 | Steam boiler pipeline pressure coordinated control system |
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WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190604 |
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