CN211854476U - Generator set water heating control device with dry burning and no water flow protection - Google Patents
Generator set water heating control device with dry burning and no water flow protection Download PDFInfo
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- CN211854476U CN211854476U CN202020131390.7U CN202020131390U CN211854476U CN 211854476 U CN211854476 U CN 211854476U CN 202020131390 U CN202020131390 U CN 202020131390U CN 211854476 U CN211854476 U CN 211854476U
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Abstract
The utility model provides a water heating control device of a generator set with dry burning and no water flow protection, which comprises a main controller, a water pump control circuit, a heating control circuit and the like; the water pump control circuit is used for controlling the water pump to be started or stopped; the heating control circuit is used for controlling the heating pipe to be started or stopped; the temperature sampling circuit is used for acquiring the water temperature in the water heater cavity of the generator set in real time and transmitting a water temperature sampling result to the main controller; the water flow state detection circuit is used for detecting whether water flow exists at the water inlet of the water heater of the generator set and transmitting a water flow detection result to the main controller; and the main controller drives the water pump control circuit and the heating control circuit to act according to the received water temperature sampling result and the water flow detection result. The utility model discloses a control water pump is opened or is shut down, and control heating pipe is opened or is shut down and detect water heater whether be in dry combustion method and no water current state, provides reliable guarantee for the water heating.
Description
Technical Field
The utility model relates to a generating set water heater protection field, specific theory has related to a generating set water heating controlling means with dry combustion method and no rivers protection.
Background
The water tank of the diesel generator set plays a key role in the whole machine body of the generator set. If the water tank is not used properly, the diesel engine and the generator can be damaged greatly, and in severe cases, the diesel engine can be scrapped. With the continuous popularization of equipment such as generating sets, the application of generating sets in alpine regions is more and more extensive. The high and cold area environment temperature is lower, and in order to start the generator set as soon as possible when the generator set is required to be started, the water temperature in the water tank of the generator set needs to be kept at a proper temperature, and the water heater is needed to be arranged.
However, if there is no reliable protection device for the water heater of the generator set, the water is easily dried by the heating device, or the engine is started up in an icing state, which causes damage to the engine, the water circulation device of the engine or the water tank.
In order to solve the above problems, people are always seeking an ideal technical solution.
Disclosure of Invention
The utility model aims at the not enough of prior art to a generating set water heating controlling means with dry combustion method and no rivers protection is provided.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a water heating control device of a generator set with dry burning and no water flow protection comprises a main controller, a water pump control circuit, a heating control circuit, a temperature sampling circuit and a water flow state detection circuit;
the water pump control circuit is respectively connected with the main controller and the water pump power supply control end and is used for controlling the water pump to be started or stopped;
the heating control circuit is respectively connected with the main controller and the heating pipe power supply control end and is used for controlling the heating pipe to be started or stopped;
the temperature sampling circuit is connected with the main controller and is used for acquiring the water temperature in the water heater cavity of the generator set in real time and transmitting a water temperature sampling result to the main controller;
the water flow state detection circuit is connected with the main controller and is used for detecting whether water flows exist at the water inlet of the water heater of the generator set or not and transmitting a water flow detection result to the main controller;
and the main controller drives the water pump control circuit and the heating control circuit to act according to the received water temperature sampling result and water flow detection result.
The utility model discloses relative prior art has substantive characteristics and progress, specific theory:
1) the utility model provides a water heating control device of a generator set with dry burning and no water flow protection, which can manufacture flowing water flow by controlling the water pump to be started or stopped, so as to heat water uniformly; heating water in an engine water tank by controlling the heating pipe to be opened or closed, so that the temperature of the water in the engine water tank is kept within a preset range; by detecting whether the water heater is in a dry-fire state or a water-flow-free state, reliable guarantee is provided for water heating, and equipment of a generator set is prevented from being damaged;
2) the main controller is also in communication connection with the upper computer through an SG72 module and is used for receiving a control instruction sent by the upper computer or uploading a water temperature sampling result and a water flow detection result to the upper computer so as to realize the remote monitoring of the water heater of the generator set.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic circuit diagram of the present invention.
Detailed Description
The technical solution of the present invention will be described in further detail through the following embodiments.
Example 1
As shown in the attached figures 1 and 2, the water heating control device of the generator set with dry heating and no water flow protection comprises a main controller, a water pump control circuit, a heating control circuit, a temperature sampling circuit and a water flow state detection circuit; the water pump control circuit is respectively connected with the main controller and the water pump power supply control end and is used for controlling the water pump to be started or stopped; the heating control circuit is respectively connected with the main controller and the heating pipe power supply control end and is used for controlling the heating pipe to be started or stopped; the temperature sampling circuit is connected with the main controller and is used for acquiring the water temperature in the water heater cavity of the generator set in real time and transmitting a water temperature sampling result to the main controller; the water flow state detection circuit is connected with the main controller and is used for detecting whether water flows exist at the water inlet of the water heater of the generator set or not and transmitting a water flow detection result to the main controller; and the main controller drives the water pump control circuit and the heating control circuit to act according to the received water temperature sampling result and water flow detection result.
When the water tank works, the water pump control circuit controls the water pump to work to produce flowing water flow so as to realize water circulation in the water tank; the heating control circuit is used for heating water in the water tank of the engine to realize a heating function; the temperature sampling circuit collects the water temperature in the cavity of the water heater in real time to prevent the water heater from being in a dry-burning state; the water flow state detection circuit collects the water flow state of the water inlet of the water heater in real time and prevents the water heater from being in a water-free state. If the water heater is judged to be dry burning or no water flow, the main controller immediately responds, the water pump control circuit controls the water pump to stop working, and the heating control circuit controls the heater to stop working.
This embodiment provides a specific implementation of a temperature sampling circuit, which measures temperature at two points. Specifically, the temperature sampling circuit comprises a temperature sampling branch I and a temperature sampling branch II; the temperature sampling branch I and the temperature sampling branch II are connected with the main controller at the same end, and the other end is connected with a common end (B-) of the sensor. The temperature sampling branch I is arranged at the lower part of a heating cavity of the water heater and is used for detecting the current water temperature in the heating cavity in real time; and the temperature sampling branch II is arranged on the upper part of the heating cavity of the water heater and used for judging whether the water heater is in a dry-fire state or not.
Preferably, the temperature sampling branch I and the temperature sampling branch II adopt PT100 temperature sensors, temperature signals are converted into resistance signals, the resistance signals are transmitted to the main controller, and the resistance values are detected through a voltage division circuit; the main controller calculates real-time temperature value by PT100 thermal resistance temperature value corresponding formula, and displays on the display screen of the nixie tube. The calculation of the real-time temperature value by the PT100 thermal resistance temperature value correspondence formula is known in the art, and will not be described in detail herein.
In this embodiment, the main controller is further connected with a water inlet valve; when the heating cavity of the water heater is not filled with water, and the steam temperature detected by the temperature sampling branch circuit II reaches 100 ℃, the water heater is considered to be in a dry-burning state and needs to be protected in time, at the moment, the main controller stops the water pump and the heating pipe to work, opens the water inlet valve, supplies purified water or cooling liquid to the water tank of the generator set in time, and cools down simultaneously.
In this embodiment, this generating set water heating control device still includes supply circuit, supply circuit includes alternating current power supply branch road and DC power supply branch road, the alternating current power supply branch road is used for water pump and heating pipe power supply, the DC power supply branch road is used for supplying power for main control unit, water pump control circuit and heating control circuit. The direct current power supply branch is converted into 8-35V direct current by the alternating current power supply branch through the AC-DC conversion circuit, and then is connected with a positive power supply pin and a negative power supply pin of the main controller through a fuse.
Preferably, the main controller adopts an embedded microprocessor.
Example 2
This embodiment gives a concrete implementation of a water pump control circuit and a heating control circuit.
In this embodiment, the water pump control circuit includes a relay K1; one end of a coil of the relay K1 is connected with the water pump control output end of the main controller, and the other end of the coil is connected with the negative output end of the direct-current power supply branch circuit; one end of a normally open contact of the relay K1 is connected with the L line end of the alternating current power supply branch, and the other end of the normally open contact is connected with the N line end of the alternating current power supply branch through the water pump power supply control end. The power supply control end of the water pump provides required alternating voltage for the water pump and provides overcurrent protection.
When the water pump control output end of the main controller outputs an opening signal, a coil of the relay K1 is electrified, so that a normally open contact of the relay K1 is closed, an L line of the alternating current power supply branch is connected to a power supply control end of the water pump, and the water pump is driven to start working. When the water heater is in a dry-fire state or a water flow-free state, the water pump control output end of the main controller outputs a shutdown signal, so that the coil of the relay K1 is powered off, the normally open contact of the relay K1 is disconnected, the connection between the L line of the alternating current power supply branch and the water pump power supply control end is disconnected, and the water pump stops working.
In the present embodiment, the heating control circuit includes a relay K2; one end of a coil of the relay K2 is connected with the heating control output end of the main controller, and the other end of the coil is connected with the negative output end of the direct current power supply branch circuit; one end of a normally open contact of the relay K2 is connected with the L-line end of the alternating current power supply branch, and the other end of the normally open contact is connected with the N-line end of the alternating current power supply branch through the power supply control end of the heating pipe. The power supply control end of the heating pipe provides required alternating voltage for the heating pipe and overcurrent protection.
When the heating control output end of the main controller outputs an opening signal, the coil of the relay K2 is electrified, so that the normally open contact of the relay K2 is closed, the L line of the alternating current power supply branch is connected to the power supply control end of the heating pipe, and the heating pipe is driven to start working. When the water heater is in a dry-fire state or a water-flow-free state, the heating control output end of the main controller outputs a shutdown signal, so that the coil of the relay K2 is powered off, the normally open contact of the relay K2 is disconnected, the connection between the L line of the alternating current power supply branch and the power supply control end of the heating pipe is disconnected, and the heating pipe stops working.
Example 3
This embodiment shows a specific implementation of a water flow status detection circuit,
in this embodiment, rivers state detection circuitry includes sheetmetal, inductance coils and acquisition circuit, the sheetmetal has or not rivers to be reciprocating motion according to generating set water heater water inlet department, inductance coils response the sheetmetal is reciprocating motion produced inductance change, acquisition circuit with this inductance change transmission extremely main control unit.
It can be understood that the water flow state detection circuit obtains the approaching and the departing of the metal sheet in the water flow by obtaining the inductance change of the electrified coil. If water exists, water flow is generated to impact the metal sheet under the action of the water pump, so that the metal sheet is pushed away from the inductance coil, the inductance change of the inductance coil is converted into a voltage signal through the acquisition circuit, and the voltage signal is a low-level signal; if no water exists, the metal sheet is close to the inductance coil, the inductance change of the inductance coil is converted into a voltage signal through the acquisition circuit, and the voltage signal is a high-level signal at the moment. The voltage signal level is connected into a main controller, and the main controller judges whether the water heater is in a water flow-free state or not; and if no water flow exists in the judgment result, the main controller immediately responds to control the heating pipe and the water pump to stop working.
Example 4
This example differs from example 1 in that: the main controller is also connected with a nixie tube display screen and an operation keyboard.
In this embodiment, the main controller is connected with the nixie tube display screen through 8 paths of IO interfaces and is used for displaying the water temperature in the heating cavity of the water heater. Preferably, the display screen nixie tube adopts 8 sections of nixie tubes to display, is more resistant to low temperature, has wider application occasions, and displays the current temperature value more visually and clearly.
In this embodiment, the operation keyboard is provided with a heating key, a stop key, an up-turning key, a down-turning key and a setting key, and is used for setting a heating automatic start temperature, a stop temperature, turning over a screen for display, and realizing a heating starting function and an interface display viewing function. The heating key, the stop key, the upturning key, the down-turning key and the setting key are respectively connected with a key input pin of the main controller and a power supply circuit.
The user heats the button and presses, and the heating pipe gets into automatic operating condition: sending a heating signal to the main controller, and starting the water pump to work to enable water flow to be uniform when the main controller receives the heating signal; starting to sample the temperature of a heating cavity of the water heater of the current generator set, and starting heating when the temperature is lower than a heating lower limit value; and when the water temperature is higher than the upper limit value, stopping heating, and stopping the water pump after delaying for 30 s.
When heating is not needed or the generator set is overhauled, the stop button is pressed, heating and water pump work are stopped, LN output of the alternating current power supply branch is stopped, and equipment and personnel safety are effectively protected.
In the working process, the temperature sampling circuit and the water flow state detection circuit detect in real time, and the dry burning and no-water flow alarm protection functions are started at any time.
Example 5
This example differs from example 1 in that: the main controller is also in communication connection with the upper computer through an SG72 module and is used for receiving a control instruction sent by the upper computer or uploading a water temperature sampling result and a water flow detection result to the upper computer so that a user can remotely monitor the working state of the water heater.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (10)
1. The utility model provides a generating set water heating controlling means with dry combustion method and no rivers protection which characterized in that: the device comprises a main controller, a water pump control circuit, a heating control circuit, a temperature sampling circuit and a water flow state detection circuit;
the water pump control circuit is respectively connected with the main controller and the water pump power supply control end and is used for controlling the water pump to be started or stopped;
the heating control circuit is respectively connected with the main controller and the heating pipe power supply control end and is used for controlling the heating pipe to be started or stopped;
the temperature sampling circuit is connected with the main controller and is used for acquiring the water temperature in the water heater cavity of the generator set in real time and transmitting a water temperature sampling result to the main controller;
the water flow state detection circuit is connected with the main controller and is used for detecting whether water flows exist at the water inlet of the water heater of the generator set or not and transmitting a water flow detection result to the main controller;
and the main controller drives the water pump control circuit and the heating control circuit to act according to the received water temperature sampling result and water flow detection result.
2. The generator set water heating control device with dry-fire and no-water-flow protection of claim 1, characterized in that: the temperature sampling circuit comprises a temperature sampling branch I and a temperature sampling branch II, the temperature sampling branch I is arranged at the lower part of the heating cavity of the water heater, and the temperature sampling branch II is arranged at the upper part of the heating cavity of the water heater; the temperature sampling branch I and the temperature sampling branch II are connected with one end of the main controller, and the other end of the temperature sampling branch I is connected with the common end of the sensor.
3. The generator set water heating control device with dry-fire and no-water-flow protection of claim 1, characterized in that: the main controller is also connected with a water inlet valve and used for supplementing purified water or cooling liquid to the water tank of the generator set.
4. The generator set water heating control device with dry-fire and no-water-flow protection of claim 1, characterized in that: the water flow state detection circuit comprises a metal sheet, an inductance coil and an acquisition circuit, wherein the metal sheet reciprocates according to the existence of water flow at the water inlet of the water heater of the generator set, the inductance coil induces the inductance change generated by the reciprocating motion of the metal sheet, and the acquisition circuit transmits the inductance change to the main controller.
5. The generator set water heating control device with dry-fire and no-water-flow protection of claim 1, characterized in that: still include supply circuit, supply circuit includes alternating current power supply branch road and DC power supply branch road, the alternating current power supply branch road is used for water pump and heating pipe power supply, the DC power supply branch road is used for supplying power for main control unit, water pump control circuit and heating control circuit.
6. The generator set water heating control device with dry-fire and no-water-flow protection of claim 5, characterized in that: the water pump control circuit comprises a relay K1; one end of a coil of the relay K1 is connected with the water pump control output end of the main controller, and the other end of the coil is connected with the negative output end of the direct-current power supply branch circuit; one end of a normally open contact of the relay K1 is connected with the L line end of the alternating current power supply branch, and the other end of the normally open contact is connected with the N line end of the alternating current power supply branch through the water pump power supply control end.
7. The generator set water heating control device with dry-fire and no-water-flow protection of claim 5, characterized in that: the heating control circuit comprises a relay K2; one end of a coil of the relay K2 is connected with the heating control output end of the main controller, and the other end of the coil is connected with the negative output end of the direct current power supply branch circuit; one end of a normally open contact of the relay K2 is connected with the L-line end of the alternating current power supply branch, and the other end of the normally open contact is connected with the N-line end of the alternating current power supply branch through the power supply control end of the heating pipe.
8. The generator set water heating control device with dry-fire and no-water-flow protection of claim 1, characterized in that: the main controller is further connected with a nixie tube display screen.
9. The generator set water heating control device with dry-fire and no-water-flow protection of claim 1, characterized in that: the main controller is also connected with an operation keyboard, and the operation keyboard is provided with a heating key, a stop key, an upturning key, a downturning key and a setting key.
10. The generator set water heating control device with dry-fire and no-water-flow protection of claim 1, characterized in that: the main controller is also in communication connection with the upper computer through an SG72 module and is used for receiving a control instruction sent by the upper computer or uploading a water temperature sampling result and a water flow detection result to the upper computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020131390.7U CN211854476U (en) | 2020-01-20 | 2020-01-20 | Generator set water heating control device with dry burning and no water flow protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020131390.7U CN211854476U (en) | 2020-01-20 | 2020-01-20 | Generator set water heating control device with dry burning and no water flow protection |
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| CN211854476U true CN211854476U (en) | 2020-11-03 |
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| CN202020131390.7U Active CN211854476U (en) | 2020-01-20 | 2020-01-20 | Generator set water heating control device with dry burning and no water flow protection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115060007A (en) * | 2022-04-28 | 2022-09-16 | 深圳市合信达控制系统有限公司 | Wall-mounted boiler and control method thereof |
-
2020
- 2020-01-20 CN CN202020131390.7U patent/CN211854476U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115060007A (en) * | 2022-04-28 | 2022-09-16 | 深圳市合信达控制系统有限公司 | Wall-mounted boiler and control method thereof |
| CN115060007B (en) * | 2022-04-28 | 2023-11-24 | 深圳市合信达控制系统有限公司 | Control method of wall-mounted furnace and wall-mounted furnace |
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