CN210466123U - Engine oil seal control system based on PLC - Google Patents
Engine oil seal control system based on PLC Download PDFInfo
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- CN210466123U CN210466123U CN201921969234.1U CN201921969234U CN210466123U CN 210466123 U CN210466123 U CN 210466123U CN 201921969234 U CN201921969234 U CN 201921969234U CN 210466123 U CN210466123 U CN 210466123U
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Abstract
The application relates to an engine oil seal control system based on a PLC (programmable logic controller), which comprises a PLC component, a starting switch, a starting detection device, an analog quantity conversion device and a starter component; the PLC component is respectively connected with the starting switch, the starting detection device, the analog quantity conversion device, the starter component and the engine; the starter assembly is also connected with the engine and used for driving the engine; the analog quantity conversion device is also connected with the engine and starter assembly and is used for converting the rotating speed signals of the engine and the starter into voltage signals; the starting detection device is also connected with the starting switch and is used for detecting whether a starting signal of the starting switch is effective or not. The system has simple structure and low manufacturing cost, can adopt different starting modes aiming at different engines, ensures the starting safety, injects lubricating oil for oil sealing after detecting the stable rotating speed of the engine, and ensures the stability and the quality of the oil seal.
Description
Technical Field
The utility model relates to an engine field especially relates to an engine oil blanket control system based on PLC.
Background
In the process of external field service, the aero-engine can exist in a storehouse for a long time, the longest oil sealing period of the external field is 2 years, under the condition that fuel oil exists in an engine fuel oil system, the aero-engine can be stored for only one week in the ground state, so that oil sealing is frequently required to be carried out on the ground, and therefore a ground oil sealing device is developed, and the ground oil sealing device is required to control starting of the aero-engine and control on and off of an electromagnetic valve so as to fill lubricating oil into an oil pipe, a casing and the like of the aero-engine to complete oil sealing of the aero-engine.
However, the existing ground oil seal device mainly adopts an imported aircraft engine controller, and often one oil seal device is manufactured based on one engine controller, the adopted materials are expensive, and various adaptability tests such as smoke, electromagnetic compatibility and the like need to be carried out on the controller in the manufacturing process. Therefore, the existing ground oil seal device not only has complex structure, high cost, long manufacturing period, but also has smaller application range.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned technical problem and provide an engine oil blanket control system based on PLC.
The utility model provides an above-mentioned technical problem's technical scheme as follows: an engine oil seal control system based on a PLC comprises a PLC component, a starting switch, a starting detection device, an analog quantity conversion device and a starter component.
The PLC component is respectively connected with the starting switch, the starting detection device, the analog quantity conversion device, the starter component and the engine.
The starter assembly is further connected with the engine and used for driving the engine.
The analog quantity conversion device is also connected with the engine and used for converting the rotating speed signal of the engine into a voltage signal.
The starting detection device is also connected with the starting switch and used for detecting a starting signal of the starting switch.
The PLC component is used for controlling the engine or the starter component.
The beneficial effects of the utility model are that, through the engine oil blanket control system that PLC subassembly, starting switch, start detection device, analog quantity conversion equipment and starter subassembly constitute, this system simple structure, the cost is with low costs. The PLC component is respectively connected with the starting switch, the starting detection device, the analog quantity conversion device, the starter component and the engine. The starter assembly is further connected with the engine and used for driving the engine. The analog quantity conversion device is also connected with the engine and used for converting the rotating speed signal of the engine into a voltage signal. The starting detection device is also connected with the starting switch and used for detecting whether a starting signal of the starting switch is effective or not. When the starting detection device works, the starting detection device firstly detects the starting signal of the starting switch, and then the PLC component starts the subsequent equipment after determining that the starting signal is effective, so that the false starting of the system is avoided, and the safety of the system is ensured. In addition, for an engine with a smaller specification, the PLC component can be used for controlling the engine to be directly started, after the engine is started, the rotating speed of the engine is fed back to the PLC component in real time by the analog quantity conversion device, and after the PLC component determines that the rotating speed is stable, lubricating oil is injected to carry out oil sealing, so that the stability of the oil sealing process is ensured. For an engine with a larger specification, the starter assembly can be started to drive the engine so as to ensure that the engine can be started stably, and then the same oil sealing process is carried out. Therefore, the oil seal control system can be suitable for engines of different specifications to finish oil sealing, and has a wide application range.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the starting switch is a starting button, the starting detection device is a pressure sensor, and the pressure sensor is arranged below the starting button and used for detecting whether the starting button is pressed down or not.
The starting button is used as the starting switch, the pressure sensor is used as the starting detection device, and when the starting signal of the starting switch is detected to be effective, the pressure sensor is only used for detecting whether the starting button is pressed down, so that the detection is accurate, the response is quick, and the cost of the starting button and the cost of the pressure sensor are low.
Further, the starter assembly comprises a starting motor and an ignition device, the starting motor is in transmission connection with the engine, and the ignition device is respectively connected with the PLC control assembly and the starting motor.
Furthermore, the control system also comprises a digital display meter, and the digital display meter is connected with the PLC component.
The beneficial effect of adopting above-mentioned further scheme is that can show the engine speed through connecting digital display table, can know the rotational speed information of engine directly perceived, in real time.
Furthermore, the control system also comprises a liquid crystal display, and the liquid crystal display is connected with the PLC component.
The beneficial effect of adopting the further scheme is that the working state of the equipment can be displayed in real time by connecting the liquid crystal display.
Furthermore, the control system also comprises a sound-light alarm device, and the sound-light alarm device is connected with the PLC component.
The beneficial effect who adopts above-mentioned further scheme is that, through connecting audible and visual alarm device, when equipment work appears unusually, can in time remind the staff.
Drawings
Fig. 1 is a schematic structural diagram of an engine oil seal control system based on a PLC according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another engine oil seal control system based on PLC provided by the embodiment of the present invention.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in FIG. 1, the embodiment of the utility model provides a pair of engine oil seal control system based on PLC, this system includes PLC subassembly, starting switch, starts detection device, analog quantity conversion equipment and starter subassembly.
The PLC component is respectively connected with the starting switch, the starting detection device, the analog quantity conversion device, the starter component and the engine.
The starter assembly is further connected with the engine and used for driving the engine.
The analog quantity conversion device is also connected with the engine and used for converting the rotating speed signal of the engine into a voltage signal.
The starting detection device is also connected with the starting switch and used for detecting a starting signal of the starting switch.
The PLC component is used for controlling the engine or the starter component.
The starter assembly specifically comprises a starting motor and an ignition device, the starting motor is in transmission connection with the engine, and the ignition device is respectively connected with the PLC control assembly and the starting motor.
In a practical application scene, the system further comprises an oil seal control panel used for inputting oil seal control signals, and the starting switch is arranged on the oil seal control panel. When the starting switch is turned on by a worker in use, the starting detection device detects whether a starting signal of the starting switch is valid, for example, the starting signal lasts for 1 second and is used as a valid starting signal, the starting switch is used as a starting button, and when the time for detecting that the starting button is pressed exceeds 1 second, the starting signal is valid, and the engine can be started.
Before starting the engine, whether the specification of the engine can be directly started or not can be observed, if the specification of the engine is smaller, the engine can be directly started, and if the specification of the engine is larger, the starter can be started firstly, and then the starter drives the engine to start, so that the engine can be stably started.
After the engine is started, the analog quantity conversion device converts a rotating speed signal of the engine into a voltage signal in real time and feeds the voltage signal back to the PLC control assembly, and the PLC control assembly determines that the rotating speed of the engine is stabilized at a certain value and then injects lubricating oil into the engine to seal the engine.
It should be noted that, in this embodiment, a method for controlling the start of the subsequent device after the PLC determines that the start signal is valid is the prior art, and a specific implementation method refers to a PLC-based marine mis-touch prevention control system disclosed in patent publication No. CN106814688A, which specifically describes "an effective touch period for setting a start button or a stop button", so as to avoid mis-triggering the start switch by detecting the effective touch period of the button.
It should be noted that, in this embodiment, the method for the PLC to perform the oil sealing after determining that the engine rotation speed reaches the threshold value is to use a simple logic determination programming method to achieve the control purpose, and is the prior art, and therefore is not described herein again.
In the present embodiment, the engine is provided with a rotation speed sensor, and the rotation speed information can be directly output, so that the analog conversion device can directly receive the rotation speed information and convert the rotation speed information into the voltage signal.
Wherein, at the oil blanket in-process, staff's accessible oil blanket control panel manual input corresponding oil blanket control signal, PLC control assembly receives this oil blanket control signal after the program that the operation corresponds with oil blanket control signal, and the generation control command sends the relevant equipment that is used for carrying out the oil blanket again with control command in order to control the oil blanket action. Among them, the oil seal device includes a solenoid valve, an oil pump, and the like.
Specifically, as shown in fig. 2, the PLC module includes a PLC input device, a PLC processor, a PLC output device, and a power supply device, and the PLC processor is connected to the PLC input device, the PLC output device, the power supply device, and the analog conversion device, respectively. The PLC input device is respectively connected with the starting switch and the starting detection device. And the PLC output device is respectively connected with the engine and the starter assembly. The PLC processor can adopt Mitsubishi Q series Q00J, and the main function of the PLC processor is to operate an oil seal program of an engine to generate a corresponding control instruction. The power supply device may employ Q61 p. The control commands comprise control commands for the engine, control commands for the starter, and control commands for devices such as an electromagnetic valve for injecting lubricating oil into the engine.
The PLC input device can adopt QX40, and is mainly used for receiving various functional signals and feedback signals of the engine from an oil seal control panel, wherein the feedback signals comprise engine seal opening/oil seal signals, starter cold running signals and the like.
The analog quantity conversion device can adopt Q68ADV, mainly receives a rotating speed signal from an engine, converts the rotating speed signal into a standard voltage signal (0-5 v) through a special rotating speed conditioning module and transmits the standard voltage signal to the PLC, and the PLC can judge whether the rotating speed of the engine reaches a limit value or not through the signal.
The PLC output device may employ QY40 through which an output to the engine, an ignition coil controlling the starter and the engine, a power supply, a solenoid valve opening the starter and the engine, and fuel and oil supplied to the engine or the starter are supplied.
Optionally, the starting switch is a starting button, the starting detection device is a pressure sensor, and the pressure sensor is arranged below the starting button and used for detecting whether the starting button is pressed down. By using the starting button as the starting switch and the pressure sensor as the starting detection device, when the starting signal of the starting switch is detected to be effective, the pressure sensor is only used for detecting whether the starting button is pressed down, the detection is accurate, the response is quick, and the cost of the starting button and the cost of the pressure sensor are low. The pressure sensor may be MCT-4C.
Optionally, the control system further comprises a digital display meter, and the digital display meter is connected with the PLC component. The rotating speed of the engine can be displayed by connecting a digital display meter, and the rotating speed information of the engine can be intuitively known in real time.
Optionally, the control system further comprises a liquid crystal display, and the liquid crystal display is connected with the PLC component. By connecting the liquid crystal display, the working state of the equipment can be displayed in real time.
Optionally, the control system further comprises an audible and visual alarm device, and the audible and visual alarm device is connected with the PLC component. Through connecting audible and visual alarm device, when equipment work appears unusually, can in time remind the staff.
In summary, the engine oil seal control system based on the PLC provided in this embodiment detects whether the start signal of the start switch is valid first by the start detection device, thereby avoiding false start of the system and ensuring system safety. After the starting switch is turned on, the engines of different specifications can be directly driven by the PLC or driven by the starter, so that the starting switch is suitable for the engines of different specifications. Meanwhile, when oil sealing is carried out, lubricating oil is injected after the rotating speed of the engine is detected to be stable to a certain value, so that the stability of the oil sealing process is ensured. And the whole system can replace the controller of the imported aircraft engine by the PLC control assembly, and the two engine starting modes are mutually used for ensuring the normal oil seal of the aircraft engine, so that the cost of ground oil seal equipment is greatly saved. The system has simple structure, low cost and convenient development, so that the manufacturing period is greatly shortened.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. An engine oil seal control system based on PLC is characterized by comprising a PLC component, a starting switch, a starting detection device, an analog quantity conversion device and a starter component;
the PLC component is respectively connected with the starting switch, the starting detection device, the analog quantity conversion device, the starter component and the engine;
the starter assembly is also connected with the engine and used for driving the engine;
the analog quantity conversion device is also connected with the engine and used for converting a rotating speed signal of the engine into a voltage signal;
the starting detection device is also connected with the starting switch and used for detecting a starting signal of the starting switch;
the PLC component is used for controlling the engine or the starter component.
2. The PLC-based engine oil seal control system according to claim 1, wherein the start switch is a start button, and the start detection means is a pressure sensor provided below the start button for detecting whether the start button is pressed.
3. The PLC-based engine oil-seal control system of claim 1, wherein the starter assembly includes a starter motor drivingly connected to the engine and an ignition device respectively connected to the PLC control assembly and the starter motor.
4. The PLC-based engine oil seal control system according to any one of claims 1-3, further comprising a digital display meter connected to the PLC component.
5. The PLC-based engine oil seal control system according to any one of claims 1-3, further comprising a liquid crystal display, wherein the liquid crystal display is connected with the PLC component.
6. The PLC-based engine oil seal control system according to any one of claims 1-3, further comprising an audible and visual alarm device connected to the PLC component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921969234.1U CN210466123U (en) | 2019-11-14 | 2019-11-14 | Engine oil seal control system based on PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921969234.1U CN210466123U (en) | 2019-11-14 | 2019-11-14 | Engine oil seal control system based on PLC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210466123U true CN210466123U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921969234.1U Active CN210466123U (en) | 2019-11-14 | 2019-11-14 | Engine oil seal control system based on PLC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210466123U (en) |
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2019
- 2019-11-14 CN CN201921969234.1U patent/CN210466123U/en active Active
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