CN210164665U - Electro-hydraulic proportional driving and rotating speed automatic control system for military 150 power assembly cooling fan - Google Patents
Electro-hydraulic proportional driving and rotating speed automatic control system for military 150 power assembly cooling fan Download PDFInfo
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- CN210164665U CN210164665U CN201920796915.6U CN201920796915U CN210164665U CN 210164665 U CN210164665 U CN 210164665U CN 201920796915 U CN201920796915 U CN 201920796915U CN 210164665 U CN210164665 U CN 210164665U
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Abstract
The utility model relates to a for military use 150 power assembly cooling fan electricity liquid proportional drive and rotational speed automatic control system, including oil tank, two plunger pumps, a pair of check valve, a pair of normal close formula electromagnetism overflow valve, two electricity liquid proportional valve, two hydraulic motor, two fans, two plunger pumps are respectively through respective check valve and filtering component to two electricity liquid proportional valve fuel feeding, and these two electricity liquid proportional valve control two hydraulic motor respectively turn to and the rotational speed, and then control two fans. The system is driven by a hydraulic motor and has the special characteristic of softness, the hydraulic motor rotates slowly or stops slightly when the fan is overloaded, and when resistance is passed, the motor continues to rotate, so that the motor cannot be damaged (the motor is overloaded and burnt out at the moment).
Description
Technical Field
The utility model belongs to the technical field of the engine, a for military use 150 power assembly cooling fan's intelligent control is related to, especially a for military use 150 power assembly cooling fan electricity liquid proportional drive and rotational speed automatic control system.
Background
At present, most of fans are driven by motors, and the rotating speed of the motors can be controlled by frequency converters generally, so that the rotating speed of the fans can be controlled. The disadvantage is that when the fan rotation load is increased (such as meeting larger resistance), the motor will be overloaded, so that the coil is burnt; and the frequency converter has large noise and large volume. Particularly for military 150 power assembly cooling fans, the problems of easy overload damage and noise pollution of motors need to be solved urgently.
Through a search of published patent documents, no technical document similar to the object and technical solution of the present patent application has been found.
Disclosure of Invention
An object of the utility model is to overcome prior art's weak point, provide a for military use 150 power assembly cooling fan electricity liquid proportional drive and rotational speed automatic control system, this system changes motor drive into hydraulic motor drive, then controls the rotational speed of motor with the proportional valve to the rotational speed of control fan.
The purpose of the utility model is realized like this:
the utility model provides a military 150 power assembly cooling fan electricity liquid proportion drive and rotational speed automatic control system, includes oil tank, two plunger pumps, a pair of check valve, a pair of normal close formula electromagnetism overflow valve, two electricity liquid proportional valve, two hydraulic motor, two fans, two plunger pumps are respectively through respective check valve and filtering component to two electricity liquid proportional valve fuel feeding, these two electricity liquid proportional valve control the turning to and the rotational speed of two hydraulic motor respectively, and then control two fans.
And the two plunger pumps are constant-power variable pumps, pressure sensors are arranged at respective outlets of the two plunger pumps, and the respective outlet pressures of the two plunger pumps are adjusted by a normally closed electromagnetic overflow valve.
And the two hydraulic motors are respectively provided with a speed sensor and a digital encoder.
The utility model has the advantages that:
1. the system is driven by a hydraulic motor and has the special characteristic of softness, the hydraulic motor rotates slowly or stops slightly when the fan is overloaded, and when resistance is passed, the motor continues to rotate, so that the motor cannot be damaged (the motor is overloaded and burnt out at the moment).
2. The system adopts the pressure valve to control reliably and accurately, is more reliable than a variable frequency control system and has low cost; the pump is provided with a liquid level relay, low liquid level alarm can be improved, the temperature relay can control the oil temperature, the water cooling valve is opened when the oil temperature is low, and the water cooling valve is closed when the oil temperature is low.
3. The system saves power, reduces energy consumption and pollution, the motor can achieve very small rotating noise, and the requirements of the structure, the size and the noise of a cooling system of a modern vehicle engine are met.
4. The driving device of the system has a much smaller volume than the motor drive, the motor power can be more reasonable, a lot of electric quantity is saved, and the vehicle control requirements are met.
Drawings
FIG. 1 is a schematic diagram of the hydraulic control of the present invention;
FIG. 2 is an enlarged view of the part A of FIG. 1;
fig. 3 is an enlarged schematic view of the part B of fig. 1.
Detailed Description
The invention will be further illustrated with reference to the following examples: the following examples are illustrative and not intended to be limiting, and the scope of the present invention is not limited by the following examples.
An electro-hydraulic proportional driving and rotating speed automatic control system for a military 150 power assembly cooling fan comprises an oil tank 10.0, two plunger pumps 1.1 and 1.2, a pair of one-way valves 4.1 and 4.1, a pair of normally closed electromagnetic overflow valves 6.1 and 6.2, two electro-hydraulic proportional valves 7.1 and 7.2, two hydraulic motors 15.1 and 15.2, two fans 17.1 and 17.2, wherein the two plunger pumps 1.1 and 1.2 respectively supply oil to the two electro-hydraulic proportional valves 7.1 and 7.2 through the respective one-way valves 4.1 and a filter assembly 8.2 thereof, and the two electro-hydraulic proportional valves 7.1 and 7.2 respectively control the steering direction and rotating speed of the two hydraulic motors 15.1 and 15.2 so as to control the two fans 17.2 and 17.2.
The two plunger pumps 1.1 and 1.2 are constant power variable pumps, pressure sensors 3.1 and 3.2 are respectively arranged at the outlets of the two plunger pumps, and the pressure of the two plunger pumps can be displayed by a touch screen; the outlet pressures of the two plunger pumps 1.1 and 1.2 are respectively adjusted by normally closed electromagnetic relief valves 6.1 and 6.2.
The two hydraulic motors 15.1, 15.2 are respectively provided with speed sensors 14.1, 14.2 and digital encoders 16.1, 16.2.
The conventional instrument configuration of the oil tank and the safety configuration of the normally closed electromagnetic overflow valve in the embodiment are conventional configurations, and are not described herein.
The utility model discloses a theory of operation is:
the two fans are respectively driven by two hydraulic motors with the displacement of 45ml/r (the motors are provided with speed sensors), the steering direction and the rotating speed of the two hydraulic motors are controlled by two electro-hydraulic proportional valves, when the water temperature of an engine reaches more than 75 +/-2 ℃, the temperature sensors send signals, after the signals are received by the PLC, the PLC communicates with the proportional valves through software programs, and at the moment, the opening degree of a valve core is increased according to temperature signals and the proportional valves. At the moment, the hydraulic motor starts to accelerate, the speed value can be fed back to the PLC through a hydraulic motor speed sensor, the PLC controls the opening of the proportional valve according to a set program to achieve the purpose of controlling the rotating speed, when the temperature reaches 85 ℃, the PLC controls the proportional valve to enlarge the opening until the rotating speed reaches 5500rpm, and the PLC controls the proportional valve to keep the rotating speed of the motor to be 5500rpm all the time. Thus, the basic control function is completed, and the operation and running process can be completed through the touch screen on the control cabinet.
The oil supply for the two hydraulic motors is performed through two constant power control plunger pumps, the outlet pressure is adjusted by a normally closed electromagnetic overflow valve, the outlet is provided with a pressure sensor, the pressure of the pressure sensor can be displayed by a touch screen, the pressure of the pressure sensor is manually adjusted, and the working mode of the pump is as follows: when the fan is at low speed, the output flow of the pump is small, the power of the motor is large, when the fan reaches high speed, the output flow of the pump is high, but the load is small, the pressure is low, and the output power of the motor is correspondingly low.
The utility model discloses a further description is made to 150 power assembly fan hydraulic drive's example:
the tank 1500L capacity is dimensioned to be 1600 a long by 1450 a high by 1000 a.
Two 75KW motor pump sets are arranged in a lower mode, oil is absorbed from the lower portion of the front face of an oil tank, the pump station is connected with a fan hydraulic motor through a seamless steel pipe, and high-pressure rubber pipes are arranged at the inlet and the outlet of the hydraulic motor to prevent pipelines from vibrating.
The utility model discloses set up an automatically controlled cabinet (the drawing does not provide), automatically controlled cabinet and operation panel formula switch board as an organic whole are arranged the pump station in and are separated by 2m department. If the system automatically controls the rotating speed kinetic energy of the fan along with the water temperature of the engine, namely the water temperature is 75 +/-DEG, the system has the function of automatically controlling the rotating speed of the fan along with the water temperature of the engine, and the control requirements are as follows: the fan does not work when the water temperature is below 75 +/-2 ℃; when the water temperature is 75 +/-2 ℃ to 85 +/-2 ℃, the rotating speed of the fan is gradually increased; the water temperature is higher than 85 +/-2 ℃, and the fan reaches the rated rotating speed of 5500 r/min;
the width of the complete equipment is less than or equal to 2m, the height is less than or equal to 2m, and the weight is less than or equal to 2.5 t;
the general control adopts a WINCC operation interface, a field S7-200PLC 5-inch touch screen, a motor Y △ is started, a remote-local control mode is adopted, and the rotating speed of the motor is adjusted by a PLC control proportional valve according to the change of water temperature.
The alarm device has the functions of pressure, liquid level and temperature alarm and protection.
150 power assembly fan hydraulic drive system calculation description:
the known conditions are:
① rated speed 5500r/min (rpm) of driving fan
② water temperature is below 75 + -2 deg.C, the fan does not work
When the water temperature is 75 +/-2 ℃ to 85 +/-2 ℃, the rotating speed of the fan is gradually increased
The water temperature is higher than 85 +/-2 ℃, and the fan reaches the rated rotating speed of 5500r/min
③ Fan drive Torque (rating) T-130 NM max 150NM
④ motor power is within 75 KW.
1. Model selection of hydraulic motor
Based on experience, Beijing Huade A2F high-speed motor is the first choice
The rotating speed of the 45ml/r motor can reach 6000rpm
When the rated rotating speed A is 5500rpm, QPump and method of operating the same＝5500×45＝247.5L/min＝248L/min
Therefore, the displacement of the pump is selected to be 160ml/r
The torque of the motor
∵T＝130Nm
∴
Therefore, when the rotation speed is 5500rpm, the system pressure for driving the 45ml/r motor
P＝191bar＝19.1Mpa
After rounding PIs a system＝190bar＝19Mpa
Because the motor of 45ml/r of Wald can fully meet the working requirement
Its model number is HD-A2F-M45/61W-VBB20-F (equipped HDD speed sensor)
2. Model selection of hydraulic pump
According to the displacement and speed q of the motorHorse＝45ml/r,nHorse＝5500rpm
Then Q isSheet＝45×5500＝248L/min
qPump row＝248/1.5＝165ml/r
A7V160LV5.1RPF00 should be selected for the series of displacements near the piston pump of the gord variety
3. Calculation of hydraulic power and motor model selection
76KW＞75KW
Because we choose the variable plunger pump as the constant power variable pump, the working principle is that the system pressure is highest, the pump displacement is reduced, the load pressure is reduced, the pump displacement is increased, when the load pressure reaches the maximum, the pump does not output displacement, so the 75KW power of the motor can be saved by at least 40%
So that the motor is selected from Y2-280S-4-B3575 KW
When the motor torque reaches 150Nm
At this time, the motor power needs to reach
When the plunger pump is constant pressure variable, only 71.5KW is needed at the moment
So that a 75KW motor can accommodate system torque variations of 130Nm to 150 Nm.
Claims (3)
1. The utility model provides a military 150 power assembly cooling fan electricity liquid proportional drive and rotational speed automatic control system which characterized in that: the two plunger pumps respectively supply oil to the two electro-hydraulic proportional valves through respective one-way valves and filter assemblies thereof, and the two electro-hydraulic proportional valves respectively control the steering and rotating speed of the two hydraulic motors so as to control the two fans.
2. The military 150 powertrain cooling fan electro-hydraulic proportional drive and rotational speed automatic control system of claim 1, wherein: the two plunger pumps are constant-power variable pumps, pressure sensors are arranged at respective outlets of the two plunger pumps, and the respective outlet pressures of the two plunger pumps are adjusted by normally closed electromagnetic overflow valves.
3. The military 150 powertrain cooling fan electro-hydraulic proportional drive and rotational speed automatic control system of claim 1, wherein: and the two hydraulic motors are respectively provided with a speed sensor and a digital encoder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920796915.6U CN210164665U (en) | 2019-05-30 | 2019-05-30 | Electro-hydraulic proportional driving and rotating speed automatic control system for military 150 power assembly cooling fan |
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| CN201920796915.6U CN210164665U (en) | 2019-05-30 | 2019-05-30 | Electro-hydraulic proportional driving and rotating speed automatic control system for military 150 power assembly cooling fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110058617A (en) * | 2018-01-18 | 2019-07-26 | 爱德利科技股份有限公司 | The control method of electric hydaulic power assist system |
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2019
- 2019-05-30 CN CN201920796915.6U patent/CN210164665U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110058617A (en) * | 2018-01-18 | 2019-07-26 | 爱德利科技股份有限公司 | The control method of electric hydaulic power assist system |
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