CN112666993A - Automatic oiling control system suitable for liquid - Google Patents
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Abstract
The invention discloses an automatic oiling control system suitable for liquid, which belongs to the technical field of automatic oiling control and is controlled by an MCU (microprogrammed control Unit) in two ways, wherein the two ways comprise a main oil pump automatic control mode, a main oil pump manual control mode and a standby oil pump automatic control mode and a standby oil pump manual control mode, and the two control modes work in an interlocking state. This automatic oiling control system suitable for liquid through upgrading traditional secondary circuit into the integrated secondary circuit of modularization, can realize standardized production, can increase substantially production efficiency, and the product is more reliable, safer in the course of the work, furthest's promotion the whole quality of product, simultaneously also very big reduction the fault rate of product, the whole overall arrangement of product is more standard, more pleasing to the eye, more saves space.
Description
Technical Field
The invention belongs to the technical field of automatic oiling control, and particularly relates to an automatic oiling control system suitable for liquid.
Background
At present, all automatic oiling (liquid) control systems on the market simply connect a single relay, a single switch, a single fuse holder (single fuse) and a single wiring terminal through cables, and a lot of problems which are not easy to solve can occur in the actual use process. The main technical drawbacks that arise are:
(1) the fittings cannot be well connected, the layout is difficult to be regular, the wiring is complicated, and the production efficiency is low;
(2) once the product is wired, if a relay and a corresponding function are required to be added, the product is difficult to add;
(3) the product can not be produced in standardized batch, has poor universality and high production cost, and is not beneficial to establishing industrial standards and the like.
Therefore, an automatic oiling control system suitable for liquid is designed, a traditional secondary circuit is upgraded into a modularized integrated secondary circuit through innovative design, standardized production can be realized, and production efficiency can be greatly improved; the product is more reliable and safer in the working process.
Disclosure of Invention
In view of the deficiencies of the prior art, the present invention provides an automatic refueling control system for liquids to solve the problems set forth in the background above.
In order to achieve the purpose, the invention provides the following technical scheme: the automatic oiling control system suitable for liquid is controlled by dividing the MCU into two paths, including a control mode of main oil pump automation and main oil pump manual operation and a control mode of backup oil pump automation and backup oil pump manual operation, wherein the two control modes work in an interlocking state;
the MCU controls a low-level detection input end IO of the main oil pump, and is used for alarming by a buzzer when low-level oil shortage occurs under a low-level signal, outputting an oiling signal of the main oil pump, starting automatic oiling, triggering an oiling signal under the low-level signal, and oiling the system until a liquid level sensor arranged in the system is closed at a high level and stopping triggering under the low-level signal to indicate that the oil is full;
the MCU is used for controlling the standby oil pump to be in a standby state when controlling the main oil pump to operate, controlling a low-level detection input end IO of the main oil pump by the MCU, detecting an oil shortage state of a system under a low-level signal all the time, unlocking the standby oil pump by the MCU, and switching to an automatic oiling control mode of the standby oil pump;
when the MCU controls the standby oil pump to operate, the MCU is used for controlling the main oil pump to be in a standby state, the automatic oiling of the standby oil pump is in the same control mode as the oiling of the main oil pump, the standby oil pump cannot be filled when the automatic oiling is carried out, the MCU does not switch to the control mode of the main oil pump and controls acousto-optic low-level alarm signal reminding when the oil shortage state of the system under a low-level signal is detected;
the MCU controls the main oil pump and the standby oil pump to stop automatically running, and workers can control the main oil pump and the standby oil pump to carry out oiling operation in a manual oiling mode.
Further optimize this technical scheme, the automatic oiling control system still includes current transformer, direct current relay, many ac contactor, comparator, pilot lamp, multichannel many gear switch, resistance capacitor, diode, triode to carry out unified control management to above-mentioned equipment by MCU.
The technical scheme is further optimized, the automatic control mode of the main oil pump and the manual control mode of the main oil pump and the automatic control mode of the standby oil pump and the manual control mode of the standby oil pump can be triggered manually to cancel the alarm during manual emergency operation, and the alarm can be reactivated when high and low level alarms are given next time.
Further optimizing the technical scheme, the manual functions of the automatic control mode of the main oil pump and the manual control mode of the main oil pump and the automatic control mode of the standby oil pump and the manual control mode of the standby oil pump are emergency standby, and the whole process of the system is in an automatic operation position state.
Further optimize this technical scheme, the system is when manual or automatic draining, still does not stop refueling after level sensor high-order closure is under low level signal, and level sensor high-order detects input IO under low level signal, and MCU starts automatic draining function, also can artificially carry out manual draining.
Further optimizing the technical scheme, the main oil pump and the standby oil pump in the two control modes of the system work in an interlocking state during manual oil filling.
Compared with the prior art, the invention provides an automatic oiling control system suitable for liquid, which has the following beneficial effects:
1. this automatic oiling control system suitable for liquid through upgrading traditional secondary circuit into the integrated secondary circuit of modularization, can realize standardized production, can increase substantially production efficiency, and the product is more reliable, safer in the course of the work, furthest's promotion the whole quality of product, simultaneously also very big reduction the fault rate of product, the whole overall arrangement of product is more standard, more pleasing to the eye, more saves space.
2. This automatic oiling control system suitable for liquid through setting up bee calling organ, can realize the warning suggestion, and double-circuit insurance can start for subsequent use under oil pump trouble all the way, still manual emergent start, is provided with automatic or manual draining function in addition under emergency.
Drawings
Fig. 1 is a schematic circuit control diagram of an automatic refueling control system for liquid according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the automatic oiling control system suitable for liquid is controlled by dividing the MCU into two paths, including a control mode of main oil pump automation and main oil pump manual operation and a control mode of backup oil pump automation and backup oil pump manual operation, wherein the two control modes work in an interlocking state;
the MCU controls a low-level detection input end IO of the main oil pump, and is used for alarming by a buzzer when low-level oil shortage occurs under a low-level signal, outputting an oiling signal of the main oil pump, starting automatic oiling, triggering an oiling signal under the low-level signal, and oiling the system until a liquid level sensor arranged in the system is closed at a high level and stopping triggering under the low-level signal to indicate that the oil is full;
the MCU is used for controlling the standby oil pump to be in a standby state when controlling the main oil pump to operate, controlling a low-level detection input end IO of the main oil pump by the MCU, detecting an oil shortage state of a system under a low-level signal all the time, unlocking the standby oil pump by the MCU, and switching to an automatic oiling control mode of the standby oil pump;
when the MCU controls the standby oil pump to operate, the MCU is used for controlling the main oil pump to be in a standby state, the automatic oiling of the standby oil pump is in the same control mode as the oiling of the main oil pump, the standby oil pump cannot be filled when the automatic oiling is carried out, the MCU does not switch to the control mode of the main oil pump and controls acousto-optic low-level alarm signal reminding when the oil shortage state of the system under a low-level signal is detected;
the MCU controls the main oil pump and the standby oil pump to stop automatically running, and workers can control the main oil pump and the standby oil pump to carry out oiling operation in a manual oiling mode.
Specifically, the automatic oiling control system further comprises a current transformer, a direct current relay, a multi-position alternating current contactor, a comparator, an indicator light, a multi-path multi-gear switch, a resistance capacitor, a diode and a triode, and the MCU is used for carrying out unified control management on the devices.
Specifically, the automatic control mode of the main oil pump and the manual control mode of the main oil pump and the automatic control mode of the standby oil pump and the manual control mode of the standby oil pump can be triggered manually to cancel the alarm during manual emergency operation, and the alarm can be reactivated when high and low level alarms are performed next time.
Specifically, the manual functions of the automatic control mode of the main oil pump and the manual control mode of the main oil pump and the automatic control mode of the standby oil pump and the manual control mode of the standby oil pump are emergency standby, and the whole system is in an automatic operation position state.
Specifically, when manual or automatic draining, the system does not stop oiling after the high-order closure of the liquid level sensor is under the low level signal, the high-order detection input IO of the liquid level sensor is under the low level signal, the MCU starts the automatic draining function, and manual draining can also be carried out manually.
Specifically, the main oil pump and the backup oil pump in the two control modes of the system work in an interlocking state during manual oil filling.
Example two:
the control method of the automatic oiling control system applied to the liquid in the first embodiment is described with reference to the circuit control schematic diagram of the system shown in fig. 1:
the system supplies power and presses power starting switch S6, and K6 starts the auto-lock power supply, and LED alternating current power source instructs the class bright, and internal power supplies power, and 12V output supplies the direct current power consumption, and MCU power supply is given to 12V step-down 5V, MCU system intellectual detection system operation. The normally closed relay K1 and the normally open relay K3 are connected in series to form the system, S1 manually or automatically controls the main oil pump alternating current contactor KW1, and a user B1 works the main oil pump. The normally closed relay K2 and the normally open relay K4 are connected in series to form the oil pump control system, and after an AC contactor KW2 of the main oil pump is manually or automatically controlled by S2, a spare oil pump of a user B2 works. The normally open relay K5 and SW3 are combined to form manual or automatic oil drainage. The mutual inductor L1 detects the main oil pump operating current, and when detecting the main oil pump operating current, the rectification filtering after the mutual inductor produced voltage, switch on triode Q2 through resistor R2 and control normally closed relay K2 disconnection, interlocking reserve oil pump ac contactor, KW2 power supply disconnection is used for main oil pump to lock reserve oil pump. The mutual inductor L2 detects the reserve oil pump operating current, and when detecting the reserve oil pump operating current, the rectification filtering behind the mutual inductor production voltage, switch on triode Q1 through resistor R1 and control normally closed relay K1 disconnection, the power supply of the main oil pump alternating current contactor KW1 of interlocking is disconnected for the reserve oil pump locks main oil pump.
The buzzer alarms, when the oil level of the oil tank reaches a high-level or low-level alarm point, the system can alarm and prompt, and the working flow is as follows:
when the oil tank is lack of oil (lack of oil), the magnetic dry yellow pipe high-low conduction liquid level switch sensor, the low section KK1 is closed and conducted, one end is pulled down to GND, the other end is pulled down to the '-' input end of the U1B comparator, the '+' input end of the U1B comparator is set to be 2.5V reference, the '-' input end of the U1B comparator passes through a resistor R27 and a diode D13, and reaches the low signal detection input end of the P1.3 end of the MCU, the port pulls up a resistor R29 to a +5V power supply of the MCU, and as the magnetic dry yellow pipe high-low conduction liquid level switch sensor, the low section KK1 is closed and conducted, one end is pulled down to GND, then the U1B comparator high level passes through a diode D11, a resistor R16 and a resistor R15, and the Q7 LS is controlled to be pulled down to GND to send out a buzzer alarm until the low section KK1 of the magnetic dry yellow pipe high-low conduction liquid level. Meanwhile, the low-level signal detection input end of the P1.3 end of the MCU is pulled down, the manual or automatic selection switches of the main oil pump SW1 and the backup oil pump SW2 are all in automatic gears at the moment, and then the system sends a refueling signal to start automatic refueling until the oil is filled. The audible and visual alarm is indicated by a low-level indicator lamp, the low-level signal detection input end of the P1.3 end of the MCU is pulled down, the main and standby oil pumps SW1 and SW2 manual or automatic selection switches are in automatic gears at the moment, then the P3.5 end of the MCU outputs a low-level signal, the triode Q12 is not conducted through the resistor R25 and does not pull down the control voltage of the triode Q8, then the triode Q8 provides working voltage for working due to the resistor R21 and the resistor R22 to the power supply +12V, and the LED-low-level alarm lamp is on.
When the oil tank is full, the work flow of the automatic oiling control system is as follows:
the high-level section KK2 of the magnetic dry yellow tube high-low conduction liquid level switch sensor is closed and conducted, one end of the magnetic dry yellow tube high-low conduction liquid level switch sensor is pulled down to GND, one end of the magnetic dry yellow tube high-low conduction liquid level switch sensor is pulled down to an ' input end of a U1A comparator, a ' input end of the U1A comparator is set to be a 2.5V reference, the ' input end of the U1A comparator is connected through a resistor R26, a diode D12 and a high-level signal detection input end of a P1.2 end of an MCU, a resistor R30 is pulled up to a +5V power supply of the MCU through the port, and as the magnetic dry yellow tube high-low conduction liquid level switch sensor, the high-level section KK2 is closed and conducted, one end of the magnetic dry yellow tube high-low conduction liquid level switch sensor is pulled down to GND, the U1A comparator high level is pulled down through a diode D11, a resistor R16 and a resistor R15 to control Q. Meanwhile, the high signal detection input end of the P1.2 end of the MCU is pulled down, and the manual or automatic selection switches SW1 and SW2 of the Normaster and backup oil pumps are in automatic gears at the moment, so that the system can send out a refueling stop signal. The audible and visual alarm is indicated by a high-level indicator lamp, the low-level signal detection input end of the P1.3 end of the MCU is pulled down, the main and standby oil pumps SW1 and SW2 manual or automatic selection switches are all in automatic gears at the moment, then the P3.4 end of the MCU outputs a low-level signal, the triode Q10 is not conducted and does not pull down through the resistor R24, the control voltage of the triode Q9, then the triode Q9 works by providing working voltage to the power supply +12V due to the resistor R19 and the resistor R20, and the LED-high-level alarm lamp is turned on.
The buzzer can be manually eliminated in the alarming process, and the work flow of the automatic oiling control system is as follows:
the system reasonably applies the controllable silicon, the controllable silicon Q6 is added between the resistors R16 and R15 to pull down and lock an alarm signal, the controllable silicon Q6 passes through a reset switch S5 because of the small resistance of the resistor R16 and the large current, the resistor R18 triggers and then pulls down the IB current of the triode Q7, the triode is driven by the large resistance of the resistor R15 and the current is insufficient to stop working, the buzzer alarms until the signals of the diodes D10, D11, D8 and D9 are disconnected, and the normal operation is carried out again.
The automatic oiling detection control flow of the automatic oiling control system is as follows:
when the system selects automatic oiling, the selector switch SW1, SW2 is in automatic gear position manually or automatically, when the oil tank is lack of oil (lack of oil), the magnetic dry yellow tube high-low conduction liquid level switch sensor, the low section KK1 is closed and conducted, one end is pulled down to GND, the low signal detection input end of the MCU system P1.3 end is pulled down (program setting detection low level), the MCU system P3.7 outputs off level, the resistor R3 conducts the triode Q3 to control the relay K3 to be closed, the alternating current contactor KW1 is electrified and attracted, the main oil pump of the user B1 starts oiling until the magnetic dry yellow tube high-low conduction liquid level switch sensor, the high section KK2 is closed and conducted, one end is pulled down to GND, the high signal detection input end of the MCU system P1.3 end is pulled down (program setting detection low level), the MCU system P3.7 stops outputting high level, and stops oiling.
When the system selects automatic oiling, the selector switches SW1 and SW2 are in automatic gear positions manually or automatically, when the oil tank is in low oil (oil shortage), the magnetic yellow tube high-low conduction liquid level switch sensor, the low section KK1 is closed and conducted, one end is pulled down to GND, the low signal detection input end of the MCU system P1.3 end is pulled down (program setting detection low level), the MCU system P3.7 outputs off level, the relay K3 is controlled to be closed by the resistor R3 and the conducting triode Q3, the alternating current contactor KW1 is electrified and attracted, the main oil pump of the user B1 starts oiling, after 10 minutes of oiling (can be set according to the volume of the oil tank), the low section KK1 is still closed and conducted, one end is pulled down to GND, the low signal detection input end of the MCU system P1.3 end is pulled down (program setting detection low level), at this time, the system considers that the circuit of the main oil pump is in fault, the standby MCU is started, the oil pump system P1.0 outputs off level, through resistor R4, it is closed to switch on triode Q4 control relay K4, ac contactor KW2 gets the electricity actuation, user B2 reserve oil pump begins to refuel, switch on the level switch sensor until magnetism dry yellow tube height, high-order section KK2 closed switches on, one end is pulled down to GND, the high order signal detection input end of MCU system P1.3 end is pulled down (program setting detects the low level), MCU system P1.0 stop output high level, the oil pump stops to refuel.
Automatic draining is a safeguard measure designed for excessive oil quantity of an oil tank due to special reasons, the draining returns redundant parts, and the automatic draining detection control flow of the automatic oil filling control system is as follows:
when magnetism dry yellow tube height switches on the level switch sensor, high-order section KK3 closure switches on, one end pull down to GND, the high order signal detection input end of MCU system P1.4 end is pulled down (program set detects the low level), MCU system P1.1 output is from the level, through resistor R5, switch on triode Q5 control relay K5 closure, user B3 draining pump begins the draining, switch on the level switch sensor until magnetism dry yellow tube height, high-order section KK3 disconnection, the oil pump stops the draining.
The invention has the beneficial effects that:
1. this automatic oiling control system suitable for liquid through upgrading traditional secondary circuit into the integrated secondary circuit of modularization, can realize standardized production, can increase substantially production efficiency, and the product is more reliable, safer in the course of the work, furthest's promotion the whole quality of product, simultaneously also very big reduction the fault rate of product, the whole overall arrangement of product is more standard, more pleasing to the eye, more saves space.
2. This automatic oiling control system suitable for liquid through setting up bee calling organ, can realize the warning suggestion, and double-circuit insurance can start for subsequent use under oil pump trouble all the way, still manual emergent start, is provided with automatic or manual draining function in addition under emergency.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The related modules involved in the system are all hardware system modules or functional modules combining computer software programs or protocols with hardware in the prior art, and the computer software programs or the protocols involved in the functional modules are all known in the technology of persons skilled in the art, and are not improvements of the system; the improvement of the system is the interaction relation or the connection relation among all the modules, namely the integral structure of the system is improved, so as to solve the corresponding technical problems to be solved by the system.
It should be noted that, in the embodiment of the above search apparatus, each included unit and module are merely divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The automatic oiling control system is characterized by comprising a control mode of automatic main oil pump and manual main oil pump and a control mode of automatic standby oil pump and manual standby oil pump, wherein the two control modes work in an interlocking state;
the MCU controls a low-level detection input end IO of the main oil pump, and is used for alarming by a buzzer when low-level oil shortage occurs under a low-level signal, outputting an oiling signal of the main oil pump, starting automatic oiling, triggering an oiling signal under the low-level signal, and oiling the system until a liquid level sensor arranged in the system is closed at a high level and stopping triggering under the low-level signal to indicate that the oil is full;
the MCU is used for controlling the standby oil pump to be in a standby state when controlling the main oil pump to operate, controlling a low-level detection input end IO of the main oil pump by the MCU, detecting an oil shortage state of a system under a low-level signal all the time, unlocking the standby oil pump by the MCU, and switching to an automatic oiling control mode of the standby oil pump;
when the MCU controls the standby oil pump to operate, the MCU is used for controlling the main oil pump to be in a standby state, the automatic oiling of the standby oil pump is in the same control mode as the oiling of the main oil pump, the standby oil pump cannot be filled when the automatic oiling is carried out, the MCU does not switch to the control mode of the main oil pump and controls acousto-optic low-level alarm signal reminding when the oil shortage state of the system under a low-level signal is detected;
the MCU controls the main oil pump and the standby oil pump to stop automatically running, and workers can control the main oil pump and the standby oil pump to carry out oiling operation in a manual oiling mode.
2. The automatic oiling control system for liquid according to claim 1, further comprising a current transformer, a dc relay, a multi-position ac contactor, a comparator, an indicator light, a multi-way multi-gear switch, a resistance capacitor, a diode, and a triode, and the MCU is used to control and manage the above devices in a unified way.
3. The automatic oiling control system for liquids according to claim 1, wherein the control modes of the main oil pump automatic and main oil pump manual and the control modes of the backup oil pump automatic and backup oil pump manual can be triggered manually to cancel the alarm in the manual emergency operation, and the alarm is reactivated in the following high and low level alarm.
4. The automatic oiling control system for liquids according to claim 1 wherein the manual functions of the automatic and manual control modes of the primary oil pump and the automatic and manual control modes of the backup oil pump are emergency backup, and the system is in an automatic operation position state in the whole process.
5. The automatic oiling control system suitable for liquid according to claim 1, wherein when manual or automatic oil drainage is performed, oiling is not stopped after the high level of the liquid level sensor is closed under a low level signal, the high level of the liquid level sensor detects the input end IO under the low level signal, the MCU starts the automatic oil drainage function, and manual oil drainage can also be performed manually.
6. The automatic oiling control system for liquid according to claim 1, wherein the primary and backup oil pumps in both control modes of the system work in an interlocking state during manual oiling.
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| CN207671968U (en) * | 2017-12-15 | 2018-07-31 | 四川北方硝化棉股份有限公司 | For the acid solution detecting and controlling system in nitrocotton production process |
| CN208399981U (en) * | 2018-06-26 | 2019-01-18 | 南通汇丰电子科技有限公司 | A kind of waste water treating and reutilizing system |
| CN109882393A (en) * | 2019-04-02 | 2019-06-14 | 柳州柳工挖掘机有限公司 | Engineering machinery oiling pump controller and control method |
| CN211855490U (en) * | 2020-03-11 | 2020-11-03 | 上海益中亘泰（集团）股份有限公司 | Liquid level centralized control alarm system |
| CN211920863U (en) * | 2020-04-15 | 2020-11-13 | 重庆耐德工业股份有限公司 | Security protection system of aviation oil supply unit |
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