CN212318266U - Boiler feed pump control circuit - Google Patents
Boiler feed pump control circuit Download PDFInfo
- Publication number
- CN212318266U CN212318266U CN202020503775.1U CN202020503775U CN212318266U CN 212318266 U CN212318266 U CN 212318266U CN 202020503775 U CN202020503775 U CN 202020503775U CN 212318266 U CN212318266 U CN 212318266U
- Authority
- CN
- China
- Prior art keywords
- terminal
- potentiometer
- frequency converter
- remote controller
- detection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The embodiment of the application provides a boiler feed pump control circuit, which comprises an air switch, a frequency converter, a water pump, a remote controller, a first potentiometer, a temperature detection device and a pressure detection device; the air switch is connected with the power input end of the frequency converter; the water pump is connected with the power supply output end of the frequency converter; the first end of the first potentiometer is connected with the reference voltage end of the remote controller; the second end of the first potentiometer is connected with the grounding end of the remote controller; the first adjusting end of the first potentiometer is connected with the analog signal receiving end of the remote controller; the temperature detection device and the pressure detection device are connected with the remote controller; the temperature detection device is used for detecting the temperature in the boiler; the pressure detection device is used for detecting the pressure in the boiler; the water supply process of the water pump is remotely controlled, and meanwhile, the water can be supplied to the boiler more accurately and timely.
Description
Technical Field
The application relates to the technical field of water pump control, in particular to a boiler feed pump control circuit.
Background
In order to keep the temperature in the boiler constant during the production process, it is more common to continuously and uninterruptedly add water to the boiler by means of a multi-stage water pump. Although the existing control mode can realize automatic control, workers are required to go to the site for adjustment in many times, the labor force is increased, and the problem of untimely adjustment also exists. If the adjustment is not timely, the temperature and the pressure in the boiler are easy to be abnormal, and the production process is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide a boiler feed pump control circuit for realize the technical effect of supplying water more accurately, in time when remote control water pump feedwater process.
The embodiment of the application provides a boiler feed pump control circuit, which comprises an air switch, a frequency converter, a water pump, a remote controller, a first potentiometer, a temperature sensor and a pressure sensor; the air switch is connected with the power input end of the frequency converter; the water pump is connected with the power supply output end of the frequency converter; the first end of the first potentiometer is connected with the reference voltage end of the remote controller; the second end of the first potentiometer is connected with the grounding end of the remote controller; the first adjusting end of the first potentiometer is connected with the analog signal receiving end of the remote controller; the temperature sensor and the pressure sensor are connected with the remote controller; the temperature sensor is used for detecting the temperature in the boiler; the pressure sensor is used for detecting the pressure in the boiler.
Further, the frequency converter comprises a fault indication output terminal, an operation indication output terminal, a start-stop terminal, a current regulation terminal and a frequency regulation terminal; the remote controller comprises a fault indication receiving terminal, an operation indication receiving terminal, a start-stop control terminal, a current control terminal and a frequency control terminal; the fault indication output terminal is connected with the fault indication receiving terminal; the operation indication output terminal is connected with the operation indication receiving terminal; the start-stop control terminal is connected with the start-stop terminal; the current control terminal is connected with the current regulating terminal; the frequency adjustment terminal is connected to the frequency control terminal.
Further, the boiler feed pump control circuit also comprises a second potentiometer; the first end of the second potentiometer is connected with the reference voltage end of the frequency converter; the second end of the second potentiometer is connected with the grounding end of the frequency converter; and the second adjusting end of the second potentiometer is connected with the analog signal receiving end of the frequency converter.
Further, the boiler feed pump control circuit further comprises a button switch; the button switch is arranged between start and stop terminals of the frequency converter.
Furthermore, the boiler feed pump control circuit also comprises a temperature sensor arranged on the boiler; the temperature sensor is connected with the remote controller and used for detecting the temperature in the boiler.
Further, the boiler feed pump control circuit further comprises a pressure sensor arranged on the outer wall of the boiler and used for detecting the pressure of the outer wall of the boiler.
Furthermore, the boiler feed pump control circuit also comprises a standby power supply and a contactor; the coil of the contactor is connected with the remote controller; and the standby power supply is connected with the power supply input end of the frequency converter through a normally closed contact in the contactor.
Further, the first potentiometer and the second potentiometer are 4.7K Ω potentiometers.
Further, the model of the frequency converter is ATV71HD90N 4.
The beneficial effect that this application can realize is: detecting temperature information in the boiler through a temperature detection device and pressure information in the boiler through a pressure detection device and sending the temperature information and the pressure information to a remote controller, wherein the remote controller remotely controls the output current and the frequency of a frequency converter according to the obtained temperature information and the obtained pressure information; thereby controlling the water supply speed of the water pump; meanwhile, the rotating speed of the given water pump of the first potentiometer (namely the water supply speed of the given water pump) can be adjusted; the constant temperature of the boiler can be ensured, the water feeding amount and the water feeding speed of the water pump can be controlled more accurately and timely, and the influence on the production process is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a schematic diagram of a boiler feed pump control circuit topology according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a connection mode of a frequency converter according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a connection mode of a remote controller according to an embodiment of the present disclosure.
Icon: 10-boiler feed pump control circuit; 100-air switch; 200-frequency converter; 210-a second potentiometer; 300-a water pump; 400-a remote controller; 500-a first potentiometer; 600-temperature detection means; 700-pressure detection means; 800-standby power supply; 810-contactor.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. In the description of the present application, it is noted that the terms "first", "second", "third", and the like are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance.
Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic diagram of a topology structure of a boiler feed pump control circuit according to an embodiment of the present disclosure; fig. 2 is a schematic diagram of a connection mode of a frequency converter according to an embodiment of the present disclosure; fig. 3 is a schematic diagram of a connection mode of a remote controller according to an embodiment of the present disclosure.
The boiler feed water pump control circuit provided by the embodiment of the application comprises an air switch 100, a frequency converter 200, a water pump 300, a remote controller 400, a first potentiometer 500, a temperature detection device 600 and a pressure detection device 700; the air switch 100 is connected with the power input end of the frequency converter 200; the water pump 300 is connected with the power output end of the frequency converter 200; a first terminal of the first potentiometer 500 is connected to a reference voltage terminal of the remote controller 400; the second terminal of the first potentiometer 500 is connected to the ground terminal of the remote controller 400; the first adjustment end of the first potentiometer 500 is connected with the analog signal receiving end of the remote controller 400; the temperature detection device 600 and the pressure detection device 700 are connected with the remote controller 400; the temperature detection means 600 is used for detecting the temperature inside the boiler; the pressure detecting device 700 is used to detect the pressure inside the boiler.
In one embodiment, the frequency converter 200 includes a fault indication output terminal, an operation indication output terminal, a start-stop terminal, a current regulation terminal, a frequency regulation terminal; the remote controller 400 includes a fault indication receiving terminal, an operation indication receiving terminal, a start-stop control terminal, a current control terminal, and a frequency control terminal; the fault indication output terminal is connected with the fault indication receiving terminal; the operation indication output terminal is connected with the operation indication receiving terminal; the start-stop control terminal is connected with the start-stop terminal; the current control terminal is connected with the current regulating terminal; the frequency adjustment terminal is connected to the frequency control terminal.
When the water supply flow is started, the air switch 100 is closed firstly, the remote controller 400 controls the start-stop terminal of the frequency converter 200 through the start-stop control terminal, the frequency converter 200 is started, meanwhile, the operation indication receiving terminal receives the trigger signal of the operation indication output terminal, and the remote controller 400 starts the operation indicator light to indicate that the frequency converter 200 is in the operation state. The remote controller 400 may control the current, frequency, etc. of the inverter 200 according to the temperature in the boiler detected by the temperature detecting means 600 and the pressure in the boiler detected by the pressure detecting means 700, thereby controlling the water supply speed and the water supply amount of the water pump 300. When water is supplied, the water supply speed and the water supply amount of the water pump 300 may be controlled by manually adjusting the first potentiometer 500. When a fault occurs, the air switch 100 trips, the fault indication receiving terminal receives a trigger signal of the fault indication output terminal, and the remote controller 400 activates a fault indication lamp.
The operation indication output terminal may be directly connected to the operation indication lamp, and the fault indication output terminal may be directly connected to the fault indication lamp.
In one embodiment, the boiler feedwater pump control circuit 10 further includes a second potentiometer 210; a first end of the second potentiometer 210 is connected with a reference voltage end of the frequency converter 200; a second end of the second potentiometer 210 is connected to the ground end of the frequency converter 200; the second adjustment end of the second potentiometer 210 is connected to the analog signal receiving end of the frequency converter 200. In the implementation process, the frequency converter 200 may also be provided with a second potentiometer 210, and the water supply speed of the water pump 300 may be adjusted on site in the processing workshop by adjusting the second potentiometer 210. The type of the frequency converter 200 can be ATV71HD90N, and the power is 90 KW; the motor power of the water pump 300 may be 75 KW; the first potentiometer 500 and the second potentiometer 210 may be 4.7K Ω potentiometers. It should be noted that the selection of the frequency converter, the water pump, the first potentiometer and the second potentiometer is not limited to the above types, and may be adjusted accordingly according to the actual application requirements.
In one embodiment, the boiler feed pump control circuit 10 further comprises a push button switch; the button switch is arranged between start and stop terminals of the frequency converter, and a worker can manually start or close the frequency converter through the button switch.
In one embodiment, in order to avoid the influence of unexpected power failure on the normal operation of the boiler, the boiler feed pump control circuit 10 further comprises a standby power supply 800 and a contactor 810; the coil of the contactor 810 is connected with the remote controller 400; the standby power supply 800 is connected to the power input of the frequency converter through a normally closed contact in the contactor 810. When the three-phase power supply 900 of the water pump 300 is powered off, the remote controller 400 energizes the coil of the contactor 810, the contactor 810 is closed, and the standby power supply 800 supplies power to the water pump through the frequency converter 200.
In summary, the embodiment of the present application provides a boiler feed pump control circuit, which includes an air switch, a frequency converter, a water pump, a remote controller, a first potentiometer, a temperature detection device, and a pressure detection device; the air switch is connected with the power input end of the frequency converter; the water pump is connected with the power supply output end of the frequency converter; the first end of the first potentiometer is connected with the reference voltage end of the remote controller; the second end of the first potentiometer is connected with the grounding end of the remote controller; the first adjusting end of the first potentiometer is connected with the analog signal receiving end of the remote controller; the temperature detection device and the pressure detection device are connected with the remote controller; the temperature detection device is used for detecting the temperature in the boiler; the pressure detection device is used for detecting the pressure in the boiler; the water supply process of the water pump is remotely controlled, and meanwhile, the water can be supplied to the boiler more accurately and timely.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. A boiler feed pump control circuit, comprising: the device comprises an air switch, a frequency converter, a water pump, a remote controller, a first potentiometer, a temperature detection device and a pressure detection device; the air switch is connected with the power input end of the frequency converter; the water pump is connected with the power supply output end of the frequency converter; the first end of the first potentiometer is connected with the reference voltage end of the remote controller; the second end of the first potentiometer is connected with the grounding end of the remote controller; the first adjusting end of the first potentiometer is connected with the analog signal receiving end of the remote controller; the temperature detection device and the pressure detection device are connected with the remote controller; the temperature detection device is used for detecting the temperature in the boiler; the pressure detection device is used for detecting the pressure in the boiler.
2. The boiler feed pump control circuit of claim 1, wherein the frequency converter comprises a fault indication output terminal, an operation indication output terminal, a start-stop terminal, a current regulation terminal, a frequency regulation terminal; the remote controller comprises a fault indication receiving terminal, an operation indication receiving terminal, a start-stop control terminal, a current control terminal and a frequency control terminal; the fault indication output terminal is connected with the fault indication receiving terminal; the operation indication output terminal is connected with the operation indication receiving terminal; the start-stop control terminal is connected with the start-stop terminal; the current control terminal is connected with the current regulating terminal; the frequency adjustment terminal is connected to the frequency control terminal.
3. The boiler feed pump control circuit of claim 1, further comprising a second potentiometer; the first end of the second potentiometer is connected with the reference voltage end of the frequency converter; the second end of the second potentiometer is connected with the grounding end of the frequency converter; and the second adjusting end of the second potentiometer is connected with the analog signal receiving end of the frequency converter.
4. The boiler feed pump control circuit of claim 3, further comprising a push button switch; the button switch is arranged between the start-stop wiring terminals of the frequency converter.
5. The boiler feedwater pump control circuit of claim 3, wherein the first potentiometer and the second potentiometer are 4.7K Ω potentiometers.
6. The boiler feed pump control circuit of claim 1, further comprising a backup power source and a contactor; the coil of the contactor is connected with the remote controller; and the standby power supply is connected with the power supply input end of the frequency converter through a normally closed contact in the contactor.
7. The boiler feed water pump control circuit of claim 1, wherein the frequency converter is model ATV71HD90N 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020503775.1U CN212318266U (en) | 2020-04-08 | 2020-04-08 | Boiler feed pump control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020503775.1U CN212318266U (en) | 2020-04-08 | 2020-04-08 | Boiler feed pump control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212318266U true CN212318266U (en) | 2021-01-08 |
Family
ID=74020798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020503775.1U Active CN212318266U (en) | 2020-04-08 | 2020-04-08 | Boiler feed pump control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212318266U (en) |
-
2020
- 2020-04-08 CN CN202020503775.1U patent/CN212318266U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20080272725A1 (en) | Load Monitor | |
| CN110562006B (en) | Low voltage protection method, apparatus, computer device and storage medium | |
| CN104141999B (en) | A kind of control device of the electric expansion valve for air-conditioner | |
| CN212318266U (en) | Boiler feed pump control circuit | |
| JP4273891B2 (en) | Indoor power line current control device | |
| JP2014011834A (en) | Power conditioner and fuel cell power generation system | |
| CN201966862U (en) | Excitation control device of minitype generator based on singlechip | |
| CN112394659A (en) | Fan current detection control method for household appliance | |
| CN108832685B (en) | Charging device for wind power pitch system and detection method thereof | |
| CN201001091Y (en) | Intelligent soft starting pressure, fluid level control device | |
| CN216413989U (en) | Zero-second switching system for generator set and mains supply | |
| CN110244636A (en) | A kind of dual power supply on-off control circuit for servo-system | |
| CN212615125U (en) | Marine starter control circuit | |
| JP3452298B2 (en) | Power supply system | |
| CN109519361B (en) | Controller of one-star triangle fire-fighting water pump | |
| CN211390307U (en) | Extrusion system and extruder economizer thereof | |
| CN220059736U (en) | Control device of fuel common rail system, fuel common rail system and engine | |
| JPH0658264A (en) | Automatic water feed device | |
| JP2017070063A (en) | Power control unit | |
| CN112441548A (en) | Oil pump control device | |
| KR20210107415A (en) | Apparatus and method for diagnosing initial charging circuit of inverter | |
| CN112946381B (en) | Unmanned aging box and intelligent monitoring method thereof | |
| JP2019013073A (en) | Distributed power supply and control method for distributed power supply | |
| CN221574943U (en) | UPS control circuit, power supply circuit and circuit management device | |
| CN216896348U (en) | Ammonia pipeline heating control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |