CN109838807A - A kind of constant temperature and pressure heating boiler of PLC control - Google Patents
A kind of constant temperature and pressure heating boiler of PLC control Download PDFInfo
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- CN109838807A CN109838807A CN201711203803.7A CN201711203803A CN109838807A CN 109838807 A CN109838807 A CN 109838807A CN 201711203803 A CN201711203803 A CN 201711203803A CN 109838807 A CN109838807 A CN 109838807A
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- temperature
- water tank
- furnace body
- fuel gas
- steam
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention discloses a kind of constant temperature and pressure heating boilers of PLC control, including furnace body, burner and water tank, the inner bottom of furnace body is equipped with burner, the air inlet of burner is connected to fuel gas conduit, electrical ball valve is installed in fuel gas conduit, and air hose is connected in fuel gas conduit, heating tube is arranged in this section of fuel gas conduit between air hose and electrical ball valve；The inner upper of furnace body is welded with water tank, the upper side communication with detection pipe and water inlet pipe of water tank by support column, and the other side of water tank is connected to steam outlet pipe and steam guiding tube, and temperature detection pipe is installed on steam outlet pipe, and the steam output end of steam guiding tube is connected to the upper side in heating tube；Heating boiler of the invention can be such that a part of water vapour is discharged in heating tube by steam guiding tube, and the opening range of electrical ball valve internal channel is controlled accordingly, and then control the flow of the fuel gas mixture entered in burner, the temperature for indirectly controlling Water in Water Tanks steam makes temperature and pressure in water tank be in a metastable situation.
Description
Technical field
The present invention relates to a kind of constant temperature and pressure heating boiler, in particular to a kind of constant temperature and pressure heating boiler of PLC control,
Belong to heating boiler technical field.
Background technique
Heating boiler is the boiler that heat supply is carried out by the steam of generation, is composition most indispensable in present heating system
Part, most of existing heating boiler are all fuel gas buring heating water, generate the boiler that water vapour carried out heat supply, are supplying
In thermal process, once heat supply temperature changes, pressure can also change, need that pressure is adjusted, to occur caused by high pressure
The case where water tank bursts occurs, and still, existing heating boiler is difficult to that temperature and pressure are carried out while being adjusted, pressure and temperature
Spend unstable, using there are certain danger, therefore, how to provide a kind of heating boiler of constant temperature and pressure is present heating boiler
One of main problem of development.
Summary of the invention
The invention proposes a kind of constant temperature and pressure heating boiler of PLC control, it is difficult to solve heating boiler in the prior art
Temperature and pressure are carried out while be adjusted, pressure and temperature are unstable, use the danger that there is a problem of centainly.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
A kind of constant temperature and pressure heating boiler of PLC control of the present invention, including furnace body, burner and water tank, the furnace body
Cavity is provided in furnace wall, and the inside of the furnace body is connected to cavity, a side-lower of the cavity by the port on its top
It is connected to chimney, the inner bottom of the furnace body is equipped with burner, and the air inlet of the burner is connected to fuel gas conduit, the combustion gas
Electrical ball valve is installed on pipe, and is connected to air hose in the fuel gas conduit, this section combustion between the air hose and electrical ball valve
Heating tube is arranged on tracheae；The inner upper of the furnace body is welded with water tank, a upper side of the water tank by support column
Communication with detection pipe and water inlet pipe, the inner tip of the detection pipe are equipped with air pressure sensor, the other side of the water tank
It is connected to steam outlet pipe and steam guiding tube, installation has the temperature detection pipe of temperature sensor on the steam outlet pipe, pacifies on the steam guiding tube
Equipped with solenoid valve, the steam output end of the steam guiding tube is connected to the upper side in heating tube, the air pressure sensor and temperature
Temperature sensor in detection pipe connects the PLC controller freely placed by conducting wire, and the PLC controller is connected by conducting wire
Connect electrical ball valve and solenoid valve.
It is logical that as a preferred technical solution of the present invention, between the furnace body and water tank, there are the flue gases of certain distance
Road.
As a preferred technical solution of the present invention, a side-lower of the heating tube is communicated with open at one end one section
Conduit.
As a preferred technical solution of the present invention, valve is installed, the valve is close to furnace body on the water inlet pipe
Outer wall.
As a preferred technical solution of the present invention, it is respectively provided with only string holes on the detection pipe and temperature detection pipe,
The conducting wire that the air pressure sensor is connected with temperature sensor is each passed through two string holes, and is sealed with sealing ring.
As a preferred technical solution of the present invention, the temperature in the air pressure sensor and temperature detection pipe is passed
The shell of sensor is waterproof case.
The beneficial effects obtained by the present invention are as follows being: constant temperature and pressure heating boiler of the invention by air pressure sensor and
Temperature sensor in temperature detection pipe can detect temperature and pressure in water tank constantly, and then be controlled by PLC controller
Solenoid valve is opened, and is discharged to a part of water vapour in heating tube by steam guiding tube, is heated the air in fuel gas conduit and combustion gas, is made
Air and combustion gas are sufficiently mixed, in order to its in furnace body full combustion, the loss of resource is reduced, correspondingly, PLC controller
The opening range of electrical ball valve internal channel is controlled, and then controls the flow of the fuel gas mixture entered in burner, to control
The intensity of flame indirectly controls the temperature of Water in Water Tanks steam, make temperature in water tank and pressure be in one it is metastable
Situation has the ability of automatic adjustment temperature and pressure, easy to use, highly-safe, is easy to use and promotes.
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 structural schematic diagram of the invention；
In figure: 1, furnace body；2, cavity；3, port；4, chimney；5, burner；6, fuel gas conduit；7, electrical ball valve；8, air
Pipe；9, heating tube；10, water tank；11, detection pipe；12, air pressure sensor；13, water inlet pipe；14, valve；15, steam outlet pipe；
16, temperature detection pipe；17, steam guiding tube；18, solenoid valve；19, PLC controller.
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 Figure 1, the present invention provides a kind of constant temperature and pressure heating boiler of PLC control, including furnace body 1,5 and of burner
Water tank 10 is provided with cavity 2 in the furnace wall of furnace body 1, and the inside of furnace body 1 is connected to cavity 2, cavity 2 by the port 3 on its top
A side-lower be connected to chimney 4, the inner bottom of furnace body 1 is equipped with burner 5, and the air inlet of burner 5 is connected to fuel gas conduit 6,
Electrical ball valve 7 is installed in fuel gas conduit 6, and is connected to air hose 8, this section between air hose 8 and electrical ball valve 7 in fuel gas conduit 6
Heating tube 9 is arranged in fuel gas conduit 6；The inner upper of furnace body 1 is welded with water tank 10, a upper side of water tank 10 by support column
Communication with detection pipe 11 and water inlet pipe 13, the inner tip of detection pipe 11 are equipped with air pressure sensor 12, water tank 10 it is another
Side is connected to steam outlet pipe 15 and steam guiding tube 17, and installation has the temperature detection pipe 16 of temperature sensor, steam guiding tube 17 on steam outlet pipe 15
On solenoid valve 18 is installed, the upper side of the steam output end connection of steam guiding tube 17 in heating tube 9, air pressure sensor 12 and temperature
Temperature sensor in degree detection pipe 16 connects the PLC controller 19 freely placed by conducting wire, and PLC controller 19 is by leading
Line connects electrical ball valve 7 and solenoid valve 18.
There are the exhaust gases passes of certain distance between furnace body 1 and water tank 10, in order to generate 5 combustion gas of burner
Flue gas is entered in cavity 2 by exhaust gases passes into port 3 is passed through, and is kept warm to furnace body 1, is avoided temperature leak, pass through later
Chimney 4 is discharged, can be to the waste heat Waste Heat Reuse in flue gas.
One side-lower of heating tube 9 is communicated with one section of conduit open at one end, in order to which the steam after overflows.
Valve 14 is installed on water inlet pipe 13, valve 14 close to furnace body 1 outer wall, in order to control the logical of water inlet pipe 13
It is disconnected.
Only string holes is respectively provided in detection pipe 11 and temperature detection pipe 16, air pressure sensor 12 and temperature sensor connect
The conducting wire connect is each passed through two string holes, and is sealed with sealing ring, and leakproofness can be improved, and prevents detection pipe 11 and temperature detection
Gas overflowing in pipe 16.
The shell of air pressure sensor 12 and the temperature sensor in temperature detection pipe 16 is waterproof case, can be kept away
Exempt from the temperature sensor in water vapour damage air pressure sensor 12 and temperature detection pipe 16.
Specifically, during use, starting PLC controller 19, and be programmed to PLC controller 19, water is preset
Pressure safe range in the temperature range of steam and corresponding water tank 10, combustion gas in the air and fuel gas conduit 6 in air hose 8
Mixing is burnt by burner 5 later, the water in heating water tank 10, and the flue gas of generation of burning is by exhaust gases passes into wearing
It crosses port 3 to enter in cavity 2, keeps warm to furnace body 1, avoid temperature leak, be discharged later by chimney 4, it can be to flue gas
In waste heat Waste Heat Reuse, water heating generate water vapour, be discharged by steam outlet pipe 15, carry out heat supply, at this point, in detection pipe 11
Temperature in air pressure sensor 12 and temperature detection pipe 16 detects the temperature of pressure and water vapour in water tank 10 respectively
Degree, and send pressure signal and temperature signal to PLC controller 19, the central processing unit (CPU) of PLC controller 19 is
The control axis of PLC.It receives and stores the user program sum number keyed in from programmable device according to the function that PLC system program assigns
According to；It checks power supply, memory, I/O and the state for guarding against timer, and the syntax error in user program can be diagnosed.Work as PLC
When putting into operation, it receives the state and data of live each input unit in a manner of scanning first, and is stored in I/O image respectively
Then area reads user program one by one from user program memory, execute logic by the regulation of instruction after command interpretation
Or the result of arithmetic operator is sent into I/O image area or data register.After being finished etc. all user programs, finally
By the data transmission in each output state or output register of I/O image area to corresponding output device, such circular flow,
Until out of service, therefore, PLC controller 19 can be by preset temperature range in the temperature signal of transmission and pressure signal and its
It is compared with corresponding pressure range, when exceeding temperature range or pressure range, meeting transfer control instruction is to electric ball
Valve 7 or solenoid valve 18 control the opening range of 7 internal channel of electrical ball valve, control its opening and are divided into and become larger or become smaller, and then control
Into the flow of the fuel gas mixture in burner 5, to control the intensity of flame, make the temperature change of its heating water tank 10,
The temperature of water vapour in water tank 10 is indirectly controlled, or control solenoid valve 15 is opened, and a part of water vapour is made to pass through 17 row of steam guiding tube
Out into heating tube 9, the air in fuel gas conduit 6 and the mixture of combustion gas are heated, is sufficiently mixed air and combustion gas, in order to it
The full combustion in furnace body 1 reduces the loss of resource, and temperature and pressure in water tank 10 is made to be in a metastable shape
Condition.
Constant temperature and pressure heating boiler of the invention is passed by the temperature in air pressure sensor 12 and temperature detection pipe 16
Sensor can detect temperature and pressure in water tank 10 constantly, and then control solenoid valve 18 by PLC controller 19 and open, and make one
Part water vapour is discharged in heating tube 9 by steam guiding tube 17, is heated the air in fuel gas conduit 6 and combustion gas, is made air and combustion gas
Be sufficiently mixed, in order to its in furnace body 1 full combustion, the loss of resource is reduced, correspondingly, PLC controller 19 also controls electricity
The opening range of dynamic 7 internal channel of ball valve, and then the flow of the fuel gas mixture entered in burner 5 is controlled, to control flame
Intensity, indirectly control the temperature of water vapour in water tank 10, make temperature in water tank 10 and pressure be in one it is metastable
Situation has the ability of automatic adjustment temperature and pressure, easy to use, highly-safe, is easy to use and promotes.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (6)
1. a kind of constant temperature and pressure heating boiler of PLC control, including furnace body (1), burner (5) and water tank (10), feature exists
In, be provided with cavity (2) in the furnace wall of the furnace body (1), and the inside of the furnace body (1) by the port (3) on its top even
One side-lower of logical cavity (2), the cavity (2) is connected to chimney (4), and the inner bottom of the furnace body (1) is equipped with burner
(5), the air inlet of the burner (5) is connected to fuel gas conduit (6), is equipped with electrical ball valve (7) on the fuel gas conduit (6), and institute
Connection air hose (8) on fuel gas conduit (6) is stated, is covered in this section of fuel gas conduit (6) between the air hose (8) and electrical ball valve (7)
Equipped with heating tube (9)；The inner upper of the furnace body (1) is welded with water tank (10) by support column, and the one of the water tank (10)
The inner tip of upper side communication with detection pipe (11) and water inlet pipe (13), the detection pipe (11) is equipped with air pressure sensor
(12), the other side of the water tank (10) is connected to steam outlet pipe (15) and steam guiding tube (17), installs and has on the steam outlet pipe (15)
The temperature detection pipe (16) of temperature sensor is equipped with solenoid valve (18) on the steam guiding tube (17), the steam guiding tube (17)
Steam output end is connected to the upper side in heating tube (9), the temperature in the air pressure sensor (12) and temperature detection pipe (16)
Degree sensor connects the PLC controller (19) freely placed by conducting wire, and the PLC controller (19) connects electricity by conducting wire
Dynamic ball valve (7) and solenoid valve (18).
2. a kind of constant temperature and pressure heating boiler of PLC control according to claim 1, which is characterized in that the furnace body (1)
There are the exhaust gases passes of certain distance between water tank (10).
3. a kind of constant temperature and pressure heating boiler of PLC control according to claim 1, which is characterized in that the heating tube
(9) a side-lower is communicated with one section of conduit open at one end.
4. a kind of constant temperature and pressure heating boiler of PLC control according to claim 1, which is characterized in that the water inlet pipe
(13) it is equipped on valve (14), outer wall of the valve (14) close to furnace body (1).
5. a kind of constant temperature and pressure heating boiler of PLC control according to claim 1, which is characterized in that the detection pipe
(11) and on temperature detection pipe (16) it is respectively provided with only string holes, what the air pressure sensor (12) connected with temperature sensor
Conducting wire is each passed through two string holes, and is sealed with sealing ring.
6. a kind of constant temperature and pressure heating boiler of PLC control according to claim 5, which is characterized in that the gas pressure
The shell of strong sensor (12) and the temperature sensor in temperature detection pipe (16) is waterproof case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711203803.7A CN109838807A (en) | 2017-11-27 | 2017-11-27 | A kind of constant temperature and pressure heating boiler of PLC control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711203803.7A CN109838807A (en) | 2017-11-27 | 2017-11-27 | A kind of constant temperature and pressure heating boiler of PLC control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109838807A true CN109838807A (en) | 2019-06-04 |
Family
ID=66879965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711203803.7A Withdrawn CN109838807A (en) | 2017-11-27 | 2017-11-27 | A kind of constant temperature and pressure heating boiler of PLC control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109838807A (en) |
-
2017
- 2017-11-27 CN CN201711203803.7A patent/CN109838807A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190604 |