CN208154453U - A kind of oxygen-eliminating device constant temperature and pressure regulating system - Google Patents
A kind of oxygen-eliminating device constant temperature and pressure regulating system Download PDFInfo
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- CN208154453U CN208154453U CN201820398303.7U CN201820398303U CN208154453U CN 208154453 U CN208154453 U CN 208154453U CN 201820398303 U CN201820398303 U CN 201820398303U CN 208154453 U CN208154453 U CN 208154453U
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- oxygen
- eliminating device
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Abstract
The utility model provides a kind of oxygen-eliminating device constant temperature and pressure regulating system, including oxygen-eliminating device, water replanishing device, steam heater and control device；Water replanishing device includes softening water tank, variable frequency pump and moisturizing pipeline, steam heater includes vapour source, jet chimney and steam electromagnetic valve, control device includes microprocessor, PID controller, UF frequency converter, temperature sensor and liquid level sensor, and temperature sensor is used to acquire the water temperature signal in oxygen-eliminating device；The utility model carries out PID dynamic regulation by the actual feedback of pre-set water temperature in PID controller and water level value and temperature sensor and liquid level sensor, variable frequency pump and steam electromagnetic valve is set to be constantly in standby mode, to guarantee that the liquid level and temperature of moisturizing in oxygen-eliminating device are in equilibrium state, reduce the oxygen content of oxygen-eliminating device moisturizing, and then reduce the oxidation corrosion phenomenon of boiler, effectively extend the service life of boiler.
Description
Technical field
The utility model relates to thermal boiler field more particularly to a kind of oxygen-eliminating device constant temperature and pressure regulating systems.
Background technique
Content of the dissolved oxygen in water supply is mainly determined by two aspects：On the one hand with the partial pressure of dissolved oxygen on the water surface at
Direct proportion, i.e. pressure are higher, and the solubility of dissolved oxygen in water is bigger, on the contrary then smaller；The temperature of still further aspect and water
Related, the temperature of water is higher, then the solubility of dissolved oxygen in water is with regard to smaller.
When boiler water supply, contain a large amount of dissolved oxygen corrosion boiler, the softened water in softening water tank in moisturizing in order to prevent
Oxygen-eliminating device deoxygenation must be entered by small pump；The method that traditional oxygen-eliminating device uses thermal de-aeration heats moisturizing by steam,
The temperature of moisturizing is improved, while stablizing the water level of oxygen-eliminating device, guarantee the hydraulic pressure of boiler replenishing water and mends the content symbol of oxygen in water
It closes and requires.In the process, it is connect by the level value of moisturizing in liquid level sensor acquisition oxygen-eliminating device when water level is lower than setting value
Tentaculum is attracted, and moisturizing pump operation carries out moisturizing.Conversely, small pump stops.Deoxygenation is acquired by temperature sensor while moisturizing
The temperature value of moisturizing in device, when the temperature of moisturizing is lower than setting value, steam valve is opened greatly；Conversely, steam valve is closed.
But moisturizing pump operation is controlled by contactor, there is the defect of the following aspects：
A, contactor control belongs to a control mode, does not open and stops, oxygen-eliminating device when controlling small pump moisturizing using contactor
In water-level fluctuation it is big；
B, when the temperature of moisturizing in oxygen-eliminating device is at 104 degree（Dissolve the minimum water temperature of oxygen solubility）When, a large amount of moisturizing, meeting
Cause the temperature of moisturizing in oxygen-eliminating device to decline suddenly, still, for oxygen-eliminating device heating steam valve caliber be it is fixed, this is resulted in
The temperature fluctuation of moisturizing is big in oxygen-eliminating device.
Drawbacks described above, which will result directly in, accurately to adjust the temperature and pressure of oxygen-eliminating device moisturizing, and then oxygen-eliminating device is caused to remove
Oxygen effect is bad, and frequent start-stop also leads to small pump service life reduction.
Utility model content
The purpose of this utility model is to provide a kind of oxygen-eliminating device constant temperature and pressure regulating systems, are able to solve existing deoxygenation
Device cannot accurately adjust the temperature and liquid level of oxygen-eliminating device moisturizing, and then cause oxygen-eliminating device deaerating effect bad, small pump service life drop
Low problem.
To achieve the goals above, the utility model uses following technical scheme：
A kind of oxygen-eliminating device constant temperature and pressure regulating system, including oxygen-eliminating device, water replanishing device, steam heater and control dress
It sets；
Water replanishing device includes softening water tank, variable frequency pump and moisturizing pipeline, and the water outlet of softening water tank passes through moisturizing pipeline
It is connected to the inlet seal of oxygen-eliminating device, the variable frequency pump for controlling moisturizing pipeline opening and closing is arranged in moisturizing pipeline；
Steam heater includes vapour source, jet chimney and steam electromagnetic valve, and the venthole of vapour source passes through steam pipe
Road is connected to the sealing of the air inlet of oxygen-eliminating device, and the steam electromagnetic valve for controlling jet chimney opening and closing is arranged in jet chimney；
Control device includes microprocessor, PID controller, UF frequency converter, temperature sensor and liquid level sensor；Temperature passes
Sensor and liquid level sensor are arranged in oxygen-eliminating device, and temperature sensor is used to acquire the water temperature signal in oxygen-eliminating device, and liquid level passes
Sensor is used to acquire water level signal in oxygen-eliminating device, and the signal output end of temperature sensor and liquid level sensor is and PID control
The signal input part of device connects, and the signal output end of PID controller and the signal input part of microprocessor connect；Variable frequency pump
Input terminal is connect with the output end of UF frequency converter, and the input terminal of UF frequency converter and the output end of microprocessor connect；Microprocessor
Output end also pass through the input terminal of solenoid valve control circuit and steam electromagnetic valve and connect.
There are two variable frequency pump, the input terminal of two variable frequency pumps is defeated with UF frequency converter for setting in the moisturizing pipeline
Outlet connection.
The microprocessor uses PLC.
The beneficial effects of the utility model：
A kind of oxygen-eliminating device constant temperature and pressure regulating system described in the utility model, by pre-set in PID controller
The actual feedback of water temperature and water level value and temperature sensor and liquid level sensor carries out PID dynamic regulation, make variable frequency pump and
Steam electromagnetic valve is constantly in standby mode, to guarantee that the liquid level and temperature of moisturizing in oxygen-eliminating device are in equilibrium state, reduces
The oxygen content of oxygen-eliminating device moisturizing, and then reduce the oxidation corrosion phenomenon of boiler, effectively extend the service life of boiler.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
As shown in Figure 1：3 constant temperature and pressure regulating system of a kind of oxygen-eliminating device described in the utility model, including oxygen-eliminating device 3, benefit
Water installations, steam heater and control device；
Water replanishing device includes softening water tank 1, variable frequency pump 2 and moisturizing pipeline, and the water outlet of softening water tank 1 passes through water supply pipe
Road is connected to the inlet seal of oxygen-eliminating device 3, and the variable frequency pump 2 for controlling moisturizing pipeline opening and closing is arranged in moisturizing pipeline；
Variable frequency pump 2 can be by the operation of Frequency Converter Control pump motor, to achieve the effect that control water pump valve aperture, in intelligent water supply
Field has been widely used, and which is not described herein again.
Steam heater includes vapour source 7, jet chimney and steam electromagnetic valve 6, and the venthole of vapour source 7 passes through steam
Pipeline is connected to the sealing of the air inlet of oxygen-eliminating device 3, and the steam electromagnetic valve 6 for controlling jet chimney opening and closing is arranged in jet chimney
On；
Control device includes microprocessor 10, PID controller 8, UF frequency converter 9, temperature sensor 4 and liquid level sensor 5；
Temperature sensor 4 and liquid level sensor 5 are arranged in oxygen-eliminating device 3, and temperature sensor 4 is used to acquire the water temperature in oxygen-eliminating device 3
Signal, liquid level sensor 5 are used to acquire water level signal in oxygen-eliminating device 3, and the signal of temperature sensor 4 and liquid level sensor 5 is defeated
Outlet is connect with the signal input part of PID controller 8, and the signal of the signal output end and microprocessor 10 of PID controller 8 is defeated
Enter end connection；The input terminal of variable frequency pump 2 is connect with the output end of UF frequency converter 9, the input terminal and microprocessor of UF frequency converter 9
10 output end connection；The output end of microprocessor 10 also passes through solenoid valve control circuit and the input terminal of steam electromagnetic valve 6 connects
It connects.
In order to improve the adjustable range of rate of water make-up, there are two variable frequency pump 2, two frequency conversion water for setting in the moisturizing pipeline
The input terminal of pump 2 is connect with the output end of UF frequency converter 9.
Cheap, fast response time PLC can be used in the microprocessor 10.
It will further illustrate that 3 constant temperature and pressure of a kind of oxygen-eliminating device described in the utility model is adjusted with specific embodiment below
The technical solution of system：
According to the needs of boiler replenishing water, if the water level in oxygen-eliminating device 3 need to keep 600mm, temperature is maintained at 104 degree（It is molten
Solve the minimum water temperature of oxygen solubility）, then it is 600mm by the water level settings in PID controller 8, temperature is set as 104 degree；This reality
When being acted with a kind of novel 3 constant temperature and pressure regulating system of oxygen-eliminating device, temperature sensor 4 and liquid level sensor 5 are adopted respectively
Collect the temperature signal and liquid level signal of moisturizing in oxygen-eliminating device 3, and it is fed back into PID controller 8；On the one hand, PID controller 8
By temperature signal that temperature sensor 4 is fed back with preset 104 degree and make comparisons, and pass through the operations such as ratio, differential, integral
Afterwards, calculated result is transmitted to PLC, PLC exports the aperture of 4-20mA control steam electromagnetic valve 6, to realize in oxygen-eliminating device 3
The accurate control of moisturizing water temperature；On the other hand, PID controller 8 by liquid level signal that liquid level sensor 5 is fed back with preset
600mm make comparisons, and after the operations such as ratio, differential, integral, calculated result is transmitted to PLC, PLC passes through UF frequency conversion
Device 9 controls the aperture of two variable frequency pumps 2 respectively, to realize the accurate control to moisturizing water level in oxygen-eliminating device 3；Above-mentioned PID
The control process of controller 8 has been quoted extensively in automatic intelligent control field, and which is not described herein again, meanwhile, PID control
The algorithm that needs in the process, program are also not belonging to the protection scope of the utility model.
3 constant temperature and pressure regulating system of a kind of oxygen-eliminating device described in the utility model, by being preset in PID controller 8
Water temperature and the actual feedback of water level value and temperature sensor 4 and liquid level sensor 5 carry out PID dynamic regulation, make frequency conversion water
Pump 2 and steam electromagnetic valve 6 are constantly in standby mode, to guarantee that the liquid level and temperature of moisturizing in oxygen-eliminating device 3 are in equilibrium-like
State, reduces the oxygen content of 3 moisturizing of oxygen-eliminating device, and then reduces the oxidation corrosion phenomenon of boiler, effectively extends boiler
Service life.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand：It is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (3)
1. a kind of oxygen-eliminating device constant temperature and pressure regulating system, it is characterised in that：Including oxygen-eliminating device, water replanishing device, steam heater
And control device；
Water replanishing device includes softening water tank, variable frequency pump and moisturizing pipeline, and the water outlet of softening water tank passes through moisturizing pipeline and removes
The inlet seal of oxygen device is connected to, and the variable frequency pump for controlling moisturizing pipeline opening and closing is arranged in moisturizing pipeline；
Steam heater includes vapour source, jet chimney and steam electromagnetic valve, the venthole of vapour source by jet chimney with
The air inlet of oxygen-eliminating device seals connection, and the steam electromagnetic valve for controlling jet chimney opening and closing is arranged in jet chimney；
Control device includes microprocessor, PID controller, UF frequency converter, temperature sensor and liquid level sensor；Temperature sensor
It is arranged in oxygen-eliminating device with liquid level sensor, temperature sensor is used to acquire the water temperature signal in oxygen-eliminating device, liquid level sensor
For acquiring the water level signal in oxygen-eliminating device, the signal output end of temperature sensor and liquid level sensor with PID controller
Signal input part connection, the signal output end of PID controller and the signal input part of microprocessor connect；The input of variable frequency pump
End is connect with the output end of UF frequency converter, and the input terminal of UF frequency converter and the output end of microprocessor connect；Microprocessor it is defeated
Outlet also passes through solenoid valve control circuit and the input terminal of steam electromagnetic valve connects.
2. a kind of oxygen-eliminating device constant temperature and pressure regulating system according to claim 1, it is characterised in that：In the moisturizing pipeline
There are two variable frequency pump, the input terminals of two variable frequency pumps to connect with the output end of UF frequency converter for setting.
3. a kind of oxygen-eliminating device constant temperature and pressure regulating system according to claim 1, it is characterised in that：The microprocessor is adopted
Use PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820398303.7U CN208154453U (en) | 2018-03-23 | 2018-03-23 | A kind of oxygen-eliminating device constant temperature and pressure regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820398303.7U CN208154453U (en) | 2018-03-23 | 2018-03-23 | A kind of oxygen-eliminating device constant temperature and pressure regulating system |
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| CN208154453U true CN208154453U (en) | 2018-11-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112631343A (en) * | 2020-12-23 | 2021-04-09 | 浙江浙能绍兴滨海热电有限责任公司 | Method for controlling water level by parallelly operating multiple deaerators in main pipe system |
| CN116221711A (en) * | 2023-01-29 | 2023-06-06 | 广东鸿业管桩有限公司 | Boiler pipe pile maintenance waste heat recovery system and method |
| CN116592339A (en) * | 2023-01-05 | 2023-08-15 | 广东鸿业管桩有限公司 | Water level control method and device of tubular pile waste heat recovery system |
-
2018
- 2018-03-23 CN CN201820398303.7U patent/CN208154453U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112631343A (en) * | 2020-12-23 | 2021-04-09 | 浙江浙能绍兴滨海热电有限责任公司 | Method for controlling water level by parallelly operating multiple deaerators in main pipe system |
| CN116592339A (en) * | 2023-01-05 | 2023-08-15 | 广东鸿业管桩有限公司 | Water level control method and device of tubular pile waste heat recovery system |
| CN116592339B (en) * | 2023-01-05 | 2023-10-24 | 广东鸿业管桩有限公司 | Water level control method and device of tubular pile waste heat recovery system |
| CN116221711A (en) * | 2023-01-29 | 2023-06-06 | 广东鸿业管桩有限公司 | Boiler pipe pile maintenance waste heat recovery system and method |
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