CN212079595U - Emergency pump set control system - Google Patents
Emergency pump set control system Download PDFInfo
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- CN212079595U CN212079595U CN202020734368.1U CN202020734368U CN212079595U CN 212079595 U CN212079595 U CN 212079595U CN 202020734368 U CN202020734368 U CN 202020734368U CN 212079595 U CN212079595 U CN 212079595U
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Abstract
The utility model aims at providing an emergency pump set control system, which comprises a logic processing unit, an execution unit, an information acquisition unit and a power supply unit, wherein the logic processing unit is electrically connected with the information acquisition unit and is used for acquiring parameters of an emergency pump; the logic processing unit is electrically connected with the execution unit and is used for sending a control instruction to the execution unit; the logic processing unit, the execution unit and the information acquisition unit are all connected with the power supply unit for supplying power, and meanwhile, the power supply unit is also connected with the pump set starting motor. The utility model discloses the power supply unit is connected with pump package starter motor for pump package starter motor with the utility model discloses the power supply to when voltage takes place to fluctuate, play the effect of protection.
Description
Technical Field
The utility model relates to an emergent water pump technical field of diesel engine, concretely relates to emergent pump package control system of diesel engine.
Background
In the steel smelting industry, the emergency circulating water pump is an emergency safety guarantee device when steel-making equipment encounters sudden power failure. The emergency circulating water pump can provide forced circulating cooling water for the blast furnace equipment when the conventional circulating water pump system of the pump room breaks down, and the blast furnace equipment is prevented from causing safety accidents due to shutdown of circulating water. The emergency water pump mostly adopts the high-power diesel engine as a prime motor to form an emergency pump set system due to the characteristics of high system power, convenience in maintenance and the like of the high-power diesel engine.
Aiming at the practical application characteristics of the diesel engine emergency pump set, the diesel engine emergency pump set control system is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an emergent pump package control system, including logic processing unit, execution unit, information acquisition unit and power supply unit, its characterized in that: the logic processing unit is electrically connected with the information acquisition unit and is used for acquiring parameters of the emergency pump; the logic processing unit is electrically connected with the execution unit and is used for sending a control instruction to the execution unit; the logic processing unit, the execution unit and the information acquisition unit are all connected with the power supply unit for supplying power, and meanwhile, the power supply unit is also connected with the pump set starting motor for supplying power to the pump set starting motor.
The power supply unit comprises a first diode, a current-limiting resistor, a capacitor and a second diode; the anode of the power supply unit is sequentially connected with a first diode and a load in series and then is connected to the cathode of the power supply unit; the current limiting resistor and the capacitor are connected in series and then connected in parallel at two ends of the load; two ends of the current-limiting resistor are connected with a second diode in parallel; wherein, the anode of the first diode is connected with the anode of the power supply unit; the cathode of the first diode is connected with a load; the anode of the second diode is connected in parallel between the current-limiting resistor and the capacitor, and the cathode of the second diode is connected in parallel between the first diode and the load.
The control system of the emergency pump set is characterized in that: the device also comprises a control unit; the control unit is electrically connected with the logic processing unit and used for sending a control instruction to the logic processing unit.
The control system of the emergency pump set is characterized in that: the device also comprises an auxiliary control unit; the auxiliary control unit is electrically connected with an auxiliary device of the pump set starting motor and used for enabling the pump set starting motor to be in a standby state.
Has the advantages that: the utility model acquires the information of the information acquisition unit through the logic processing unit, knows the parameters of the emergency pump, is electrically connected with the execution unit and sends a control instruction to the execution unit; and power supply unit is except connecting the system outside, still be connected with pump package starter motor for pump package starter motor with the utility model discloses the power supply to when voltage takes place to fluctuate, play the effect of protection. The utility model discloses simple structure can control emergency pump automatically, and is simple reliable, improves the system security.
Drawings
Fig. 1 is a block diagram of the present invention.
Fig. 2 is a schematic block diagram of the power supply unit of the present invention.
Fig. 3 is a schematic diagram of the circuit of fig. 2.
Fig. 4 is a connection block diagram of the present invention with an external water pump, a clutch and an engine.
Fig. 5 is a flowchart of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1, the emergency pump unit control system is used for performing data interaction with an emergency pump unit, controlling the above components to enter different working conditions according to different conditions, and includes a logic processing unit, an execution unit, an information acquisition unit, a control unit, an auxiliary control unit and a power supply unit, and is characterized in that: the logic processing unit is electrically connected with the information acquisition unit and is used for acquiring parameters of the emergency pump; the logic processing unit is electrically connected with the execution unit and is used for sending a control instruction to the execution unit; the logic processing unit, the execution unit and the information acquisition unit are all connected with the power supply unit for supplying power, and meanwhile, the power supply unit is also connected with the pump set starting motor for supplying power to the pump set starting motor. The control unit is electrically connected with the logic processing unit and used for sending a control instruction to the logic processing unit. The auxiliary control unit is electrically connected with an auxiliary device of the pump set starting motor and used for enabling the pump set starting motor to be in a standby state.
The emergency pump set comprises a water pump, a clutch and an engine; the water pump is mechanically connected with the engine through a clutch, and the engine drives the water pump to operate through the clutch.
As shown in fig. 2, the power supply unit is composed of a storage battery, a floating charging device, a voltage stabilizer, a charging generator mounted on the engine, and the like, and provides energy supply for maintaining the automatic start and operation of the emergency pump set under the condition that all the external accessories are not failed.
The information acquisition unit consists of sensors such as a rotating speed sensor, a temperature sensor, a pressure sensor, a position switch and an alarm switch and a signal processing unit; the sensors are respectively arranged on the water pump inlet and outlet, the clutch and the engine according to requirements and are used for acquiring the working state and the operating parameters of the emergency pump set; the signal processing unit is configured to perform processing such as filtering on the acquired data information, which is the prior art and is not described herein again.
The execution unit consists of various execution mechanisms and driving circuits thereof which are arranged on the clutch and the engine, and the execution mechanisms can be driven to act through the driving circuits, so that the disengagement and engagement of the clutch, the starting and stopping of the engine and the rotation speed adjustment of the engine can be realized.
As shown in fig. 4, the logic processing unit is electrically connected to the information acquisition unit and the execution unit, and by logically processing the information of the information acquisition unit, the working state and parameters of the emergency pump set are known, and by initiating a control command to the execution unit, the emergency pump set can be automatically started in the emergency working state according to a predetermined working command, so that the emergency pump set can work according to a predetermined working logic, and the alarm and protection functions of the abnormal working state of the emergency pump set are realized. According to the technical scheme, the automatic input function of the emergency pump set under the condition that the common circulating water pump device has system faults or loses power can be realized, and the emergency pump set control system can enable the emergency pump set to be automatically input to ensure the uninterrupted operation of the cooling water circulating system when the conventional circulating water pump device has faults or cannot work due to power loss.
At present, a working power supply of a pump set control system and a pump set starting motor share a set of starting storage batteries as a working power supply. In the pump set starting process, because the starting motor has larger power, the power supply voltage of the storage battery drops greatly at the starting moment of the pump set, the voltage of the storage battery gradually recovers to be normal working voltage in the pump set starting process, and the storage battery recovers to be normal after the pump set successfully operates. During the starting process, the instantaneous working voltage of the storage battery can drop to 20V, and the duration of the whole voltage drop is about 3 seconds.
For preventing to lead to control system inefficacy because of starting battery voltage instability in pump package start-up process, the utility model provides an increase special design special voltage stabilization power supply unit in the power supply unit system design. The working principle of the voltage-stabilizing power supply device is shown in fig. 3: firstly, a large-capacity solid capacitor c is selected as a system power storage device according to the load of the system, and the capacitor c can maintain the power supply of the load for 2 to 3 seconds when the voltage of the storage battery drops. The working principle of the circuit breaker is shown in the figure, when a control system is powered on for the first time, a power supply loop formed by a first diode D1 and a current limiting resistor R charges a capacitor c, and the current limiting resistor R is arranged to prevent the circuit breaker from tripping due to overlarge charging current in the charging process of the capacitor c. When the pump set is started, the power supply voltage of the storage battery DC24V has an instantaneous voltage drop phenomenon, at the moment, due to the reverse cut-off function of the first diode D1, the limiting capacitor c can only discharge the power load, and the power supply voltage of the control system is kept stable through the discharge of the capacitor c.
For manual clutch engagement: when the clutch is in the manual engaging and disengaging function, the disengaging and engaging operation of the clutch is finished by manual judgment. In the emergency operating state the clutch is generally manually set to the engaged state. Thus, the engine is started and the clutch is put into the row combining working state.
When the clutch is automatically engaged: the clutch automatic combination and exhaust function is generally used under the working condition that the load of a water pump is large and an engine cannot be directly started under the clutch combination and exhaust state. When the engine is started successfully, the engine is in an idling working state firstly, the logic control unit judges the running state of the engine according to the data of the rotating speed sensor, and if the engine runs successfully and is in the automatic clapping running rotating speed, a clapping instruction is automatically sent to the clutch. And automatically adjusting the rotating speed of the engine to the rated rotating speed when the clutch is successfully arranged.
And (4) mechanical failure alarm: when the logic processing unit detects that abnormal phenomena occur in the operation parameters of mechanical equipment such as an engine, a clutch, a water pump and the like in the information acquisition unit, such as abnormal working states of high cooling water temperature, high engine oil temperature, low engine oil pressure and the like, the monitoring system can automatically send out an operation fault alarm to prompt an operator to have mechanical operation faults.
An auxiliary control unit: the logic processing unit is connected with the auxiliary control unit, and mainly realizes the control of peripheral auxiliary control equipment of the pump set, and common main functions comprise engine oil pre-supply control, water preheating control, automatic oil supply of a fuel tank and the like. And the engine is in a standby state through the control of the auxiliary control system of the pump set.
The safety protection function is as follows: when the engine has overspeed operation fault (the overspeed alarm value is adjustable, and is generally in the range of 118% -120% of rated speed), the monitoring system automatically sends out emergency stop alarm and controls the engine to automatically stop so as to protect the safety of mechanical equipment and operators.
As shown in fig. 5, the utility model discloses an automatic start working logic: the emergency pump set control system has three automatic starting judgment modes:
the automatic starting judgment mode is as follows: the water pressure of the main pipeline is detected by a water pressure sensor arranged on a water pump delivery pipeline, and when the water pressure of the main pipeline is lower than a set value, the engine is started in a delayed mode (the delayed value is adjustable).
And a second automatic starting judgment mode: by detecting the voltage of the main working power supply and the standby working power supply of the conventional water pump in the main control room, when the main power supply and the standby power supply are detected to lose power, the engine is started in a delayed manner (the delayed value is adjustable).
And a third automatic starting judgment mode: and after receiving a remote starting instruction sent by the main control room, starting the engine.
The above description is only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily change or replace the technical scope of the present invention. Therefore, the protection scope of the present invention is subject to the protection scope of the claims.
Claims (6)
1. The utility model provides an emergent pump package control system, includes logic processing unit, execution unit, information acquisition unit and power supply unit, its characterized in that: the logic processing unit is electrically connected with the information acquisition unit and is used for acquiring parameters of the emergency pump; the logic processing unit is electrically connected with the execution unit and is used for sending a control instruction to the execution unit; the logic processing unit, the execution unit and the information acquisition unit are all connected with the power supply unit for supplying power, and meanwhile, the power supply unit is also connected with the pump set starting motor for supplying power to the pump set starting motor.
2. An emergency pump group control system according to claim 1, characterized in that: the power supply unit comprises a first diode (D1), a current limiting resistor (R), a capacitor (C) and a second diode (D2); wherein, the positive pole of the power supply unit is connected with a first diode (D1) in series in sequence, and the load is connected with the negative pole of the power supply unit; the current limiting resistor (R) and the capacitor (C) are connected in series and then connected in parallel at two ends of the load; two ends of the current limiting resistor (R) are connected with a second diode (D2) in parallel;
wherein the anode of the first diode (D1) is connected with the anode of the power supply unit; the cathode of the first diode (D1) is connected to a load;
the anode of the second diode (D2) is connected in parallel between the current-limiting resistor (R) and the capacitor (C), and the cathode of the second diode (D2) is connected in parallel between the first diode (D1) and the load.
3. An emergency pump group control system according to claim 1, characterized in that: the device also comprises a control unit;
the control unit is electrically connected with the logic processing unit and used for sending a control instruction to the logic processing unit.
4. An emergency pump group control system according to claim 1, characterized in that: the device also comprises an auxiliary control unit;
the auxiliary control unit is electrically connected with an auxiliary device of the pump set starting motor and used for enabling the pump set starting motor to be in a standby state.
5. An emergency pump group control system according to claim 1, characterized in that: the emergency pump set comprises a water pump, a clutch and an engine; the water pump is mechanically connected with the engine through a clutch and is used for driving the water pump to run through the clutch by the engine;
the information acquisition unit acquires data of the water pump, the clutch and the engine through the sensor, and the acquired data are sent to the logic processing unit;
the logic processing unit is electrically connected with the water pump, the clutch and the execution structure of the engine, and is used for controlling the water pump, the clutch and the execution mechanism of the engine according to the information acquired by the information acquisition unit and finishing the starting of the water pump, the combination and the exhaust of the clutch, the starting of the engine and the rotating speed adjustment.
6. An emergency pump group control system according to claim 5, characterized in that: the sensors for collecting the information collecting unit are respectively arranged on the water pump inlet and outlet, the clutch and the engine and are used for respectively measuring the output pressure of the water pump, the combined exhaust of the clutch and the rotating speed of the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020734368.1U CN212079595U (en) | 2020-05-07 | 2020-05-07 | Emergency pump set control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020734368.1U CN212079595U (en) | 2020-05-07 | 2020-05-07 | Emergency pump set control system |
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| CN212079595U true CN212079595U (en) | 2020-12-04 |
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| CN202020734368.1U Active CN212079595U (en) | 2020-05-07 | 2020-05-07 | Emergency pump set control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687891A (en) * | 2022-03-04 | 2022-07-01 | 广州船舶及海洋工程设计研究院（中国船舶工业集团公司第六0五研究院） | Ship LNG (liquefied Natural gas) gasification system |
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2020
- 2020-05-07 CN CN202020734368.1U patent/CN212079595U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687891A (en) * | 2022-03-04 | 2022-07-01 | 广州船舶及海洋工程设计研究院（中国船舶工业集团公司第六0五研究院） | Ship LNG (liquefied Natural gas) gasification system |
| CN114687891B (en) * | 2022-03-04 | 2024-02-23 | 广州船舶及海洋工程设计研究院（中国船舶工业集团公司第六0五研究院） | Ship LNG gasification system |
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