How to calculate the displacement of the piston pump How big motor to use For example, if the displa

The calculation formula is as follows: =q liquid q theory 100% where q liquid is the actual production of the oil well (tons per day); Q is the theoretical displacement of the pump (tons per day).

With the same power machine, the injection speed can be increased by more than 25%, which is more suitable for thin-walled precision injection requirements. Since the power calculation of the ordinary PQ system is based on the pressure holding state, the power consumption of the proportional variable pump system is very low in this action, so the oil pump displacement can be increased by more than 25%.

The system is hot. Lowered, the service life of hydraulic components is extended. The proportional variable system has almost no throttling and overflow loss, and the heat generation is greatly reduced during system operation. Not only does it save cooling water.

The low oil temperature greatly improves the life of the sealing element.

2.Calculation of displacement and flow rate of axial piston pump See Figure 3-23, the diameter of the plunger is d, the diameter of the plunger distribution circle is d, and the inclination angle of the swash plate is s=dtan, so when the number of plungers is z, the displacement of the axial piston pump is:

v=πd2dtanγz/4 (3-29)

Let the number of revolutions of the pump be n and the volumetric efficiency be v, then the actual output flow rate of the pump is:

v=πd2dtanγz nηv/4 (3-30)

In fact, because the speed of the plunger movement in the cylinder bore is not constant, the output flow rate is pulsating, when the plunger number is an odd number, the pulsation is smaller, and the plunger number is more and the pulsation is smaller, so the number of plungers of the commonly used plunger pump is or 11.

3.Structural features of axial piston pumps.

1) Typical structure. Figure 3-24 shows the structure of a straight-shaft axial piston pump. The spherical head of plunger is housed in the sliding shoe 4, and the spring 9 supported by cylinder block pushes the return disc 3 through the steel ball, and the return disc rotates together with the plunger sliding shoe.

In the process of oil discharge, by means of swash plate 2, the plunger is promoted to do axial movement; When sucking oil, rely on the return stroke device, the steel ball and the spring to form the return travel device that the sliding shoe is tightly pressed on the swash plate surface and slide, and the spring 9 is generally called the return spring, and such a pump has self-priming ability. There is an oil chamber in the part that the sliding shoe is in contact with the swash plate, it is connected with the working cavity in the cylinder block through the small hole in the middle of the plunger, and the pressure oil forms a layer of oil film between the contact surface of the sliding shoe and the swash plate after the pressure oil enters the oil chamber, plays the role of static pressure support, so that the force of the sliding shoe acting on the swash plate is greatly reduced, and thus the wear is also reduced. Transmission shaft 8 drives cylinder body 6 to rotate by the spline on the left, and because the sliding shoe 4 is attached to the swash plate surface, the plunger makes reciprocating motion in cylinder body while rotating with cylinder block.

The sealing working volume of plunger bottom in cylinder block is communicated with the inlet and outlet of pump by oil distribution pan 7. As the propeller shaft rotates, the hydraulic pump continuously sucks and discharges oil.

2) Variable institutions. From equation (3-32), it can be seen that if you want to change the output flow rate of the axial piston pump, as long as you change the inclination angle of the swash plate, you can change the displacement and output flow of the axial piston pump.

Manual variable mechanism. As shown in Figure 3-24, rotate the handwheel 1 to make the lead screw 12 rotate and drive the variable piston 11 to move axially (due to the effect of the guide key, the variable piston can only move axially and cannot rotate). The swash plate 2 is rotated around the center of the arc guide rail surface (i.e., the center of the steel ball) on the housing of the variable mechanism by the pivot pin 10.

So that the inclination angle of the swash plate can be changed to achieve the purpose of variable. When the flow rate reaches the requirement, can be locked with lock nut 13. This kind of variable mechanism is simple in structure, but the operation is not light, and it cannot be variable in the working process.

The displacement is 10L, just use it This mainly depends on how much power you want to use, the greater the power, the faster the displacement!

First of all, it is necessary to clarify the working pressure of the hydraulic system and the movement speed of the hydraulic actuator to confirm the working pressure and flow rate of the piston pump.

Second, it is necessary to clarify the control mode of the piston pump, whether it is a constant pressure pump or a constant power pump or a proportional pump, etc.

Both of these points can affect the selection power of the motor.

Therefore, it is best to clarify the hydraulic action requirements in the selection of hydraulic pumps and the motor power of the drive pump.

The power of the pump is pressure * flow, if the system pressure is high, the pump is a little smaller; If the system pressure is low, the pump can be equipped with a little larger. If you use a constant power pump, it should be considered comprehensively in combination with the pq value of high pressure and bottom point.

It depends on the pressure and flow of your hydraulic system, choose the piston pump, and then choose the motor power.

It is equipped with a 30 kW four-stage motor. The use pressure of the high-pressure piston pump should generally be between 10MPa and 100MPa. It is a positive displacement pump, which uses the periodic change of volume in the working chamber to achieve the purpose of transporting liquid; The mechanical energy of the prime mover is directly converted into the pressure energy of the substrate of the conveyed liquid through the pump; The capacity of the pump depends only on the value of the pure volume change of the working cavity bend and the number of times it changes per unit time, and is theoretically independent of the discharge pressure.

The reciprocating pump is to make the volume of the working chamber change periodically with the help of the reciprocating motion of the piston in the working chamber of the liquid cylinder (or through the periodic elastic deformation of flexible elements such as diaphragm and bellows in the working chamber). Structurally, the working chamber of the reciprocating pump is separated from the outside world by means of a sealing device, and communicates or closes with the pipeline through the pump valve (suction valve and discharge valve).

Electric machinery (commonly known as "motor") refers to an electromagnetic device that converts or transmits electrical energy according to the law of electromagnetic induction. In the circuit it is indicated by the letter M (D in the old standard).

Its main function is to generate driving torque, as a power source for electrical appliances or various machinery. Generators are denoted by the letter G in the circuit. Its main function is to use electrical energy to convert noisy and mechanical energy.

Can be measured indirectly. The method is to record the current of the motor and the piston pump connection and rotation, then remove the motor, turn on the power supply, apply a friction resistance to the motor spindle, observe the ammeter, make the size of the friction resistance just so that the working current of the motor is equal to the current with the pump, then the dynamic torque meter measures the torque of the motor, which is equal to the torque when the motor and the piston pump are connected and rotated.

1500r min maximum flow rate 40l min

Please enter yours here.

Look at the pressure that the system needs.

Look at the pressure that the system needs.

Look at the pressure that the system needs.

This depends not only on the type of pump you choose, but also on the speed and output pressure of the pump you end up using.

If you buy a product, pay attention to the unit of flow speed.

If you don't know, don't design.

If the displacement is not adjusted by the variable pump, there is about 15MPa oil pressure, which can produce about tons of thrust.

Know the motor model, the displacement of the plunger oil pump, and how to calculate the flow rate.

60 cubic to l min is 1000l min If according to the data you gave, the pump speed is 106rpm min, then the pump has to be nearly 10000cc rpm I have never heard of this kind of pump, so the pump speed you give is 106min-1 should be the displacement of the pump, 106cc rpm should be adjusted to 9500 rpm, this kind of motor is too expensive even if there is, so either the data you give is wrong, or the pump selection is wrong, you have to calculate the flow rate and displacement, the pressure is meaningless, the bore, The stroke should be increased, so that the total system flow can be obtained by the number of rubber grips, but you have directly given the total Tanqing flow, if your other data are correct, the more suitable solution is to pump directly with the pump of the Rexroth 750, with a four-pole motor such as Zheng, the total flow rate is just about 1100, and the more economical solution is to use multiple pumps in parallel, with 5 Rexroth 140 pump units, the total flow rate is just 1000l min

Know the motor model, the displacement of the plunger oil pump, and how to calculate the flow rate.

The theoretical flow rate of the piston pump: qt=asnz, the theoretical flow rate of the qt pump in the formula; aThe cross-sectional area of the plunger (or piston); S stroke wild and excited; n crankshaft speed (or the number of reciprocating times per minute of the plunger) number of z-couplings (number of plungers or pistons) The actual flow rate of the pump: Q=qt Q, the flow rate of the Q pump in the formula; Theoretical flow rate of QT pumps; Q pump flow loss of socks.

The factors that cause the flow loss of the pump are: volume loss due to liquid compression or expansion; loss of volume due to the lag of the valve when it is closed; Volume loss due to leakage through the sealing surface due to the lack of tightness after the valve is closed; Volume loss through leakage of the plunger, piston rod or piston ring. The power of the pumpThe effective power of the pump:

The amount of energy obtained from the pump by the liquid discharged by the pump within a unit hour is called the shed miracle power. Effective power, full pressure, flow. After substituting the units, the formula becomes:

ne(kw)=1/。Considering the power loss caused by the efficiency of the transmission device, mechanical friction, volumetric efficiency, medium temperature rise, etc., when selecting the power of the prime mover, for the low-pressure piston pump, n=1 (; For high-pressure piston pumps, n=1 (.

Summary. Hello, according to the information you provided, how big a motor does a piston pump of 150 need to be equipped and how many revolutions of motor is needed, which needs to be determined according to the specific use case. Generally speaking, the power of the motor is related to the flow, head, medium and other factors of the pump.

Therefore, it needs to be determined based on your specific use case. Generally speaking, a 150 piston pump needs to be equipped with a motor with a power of about 30-37kw and a speed between 1450-2900 rpm. Of course, the specific power and speed also need to be determined according to your use case.

Hello, according to the information you provided, the piston pump of 150 needs to be equipped with how big a motor and how many revolutions of the motor is needed, which needs to be determined according to the specific use case. Generally speaking, the power of the remaining machine in the field power hall is related to the flow, head, medium and other factors of the pump. Therefore, it needs to be determined based on your specific use case.

Generally speaking, a 150 piston pump needs to be equipped with a motor with a power of about 30-37kw and a speed between 1450-2900 rpm. Of course, the specific power and speed also need to be determined according to your use case.

Power and rotational speed also need to be determined based on your usage. In addition, it is necessary to pay attention to the fact that the selection of the motor should not only consider the power and speed, but also consider the rated high stool voltage, rated current, insulation level and other factors of the motor. Therefore, it is necessary to consider all factors in the selection to ensure the safe and reliable operation of the motor.

In conclusion, according to the information you provided, the piston pump of 150 needs to be equipped with a motor with a power of about 30-37kw and a speed between 1450-2900 rpm. However, the specific selection needs to be determined according to your use case.

According to the flow rate of the piston pump, the power and number of revolutions of the motor it is equipped with should meet the following conditions: 1. Motor power: the larger the flow rate of the piston pump, the higher the motor power of the equipped one, therefore, for a piston pump with an output flow rate of 150L min, the motor power equipped with it should be above.

2. Number of revolutions: the larger the flow rate of the piston pump, the higher the number of revolutions of the motor equipped with the rock cavity to lift it, therefore, for a piston pump with an output flow rate of 150L min, the motor speed should be more than 1450r min.

Hello, pro 160 independent variable piston pump pressure 18 with 4 motor how big the motor is enough as follows: ultra-high pressure piston pump +160mpa with how many motors Hello dear, the key to the matching of the motor and the pump is to know three of the four parameters such as the speed of the motor, the displacement of the pump, the working pressure, and the power of the motor. Taking the four-stage motor as an example, if the system pressure is 160 bar, then the 160ml pump needs to choose a 64kw motor, but there is no standard motor of 64kw, so you can choose a higher gear 75kw, or a lower gear 55kw motor; The 315ml pump selects a larger motor, which is calculated to reach 126kw, and there is no standard motor, so choose a higher 132kw motor.

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Hello, it is a pleasure to serve you and give you the following answer: Generally speaking, a 15kw motor cannot drive a 40kw piston pump because the power of the motor is not enough. If you want to use a 15kw motor to drive a 40kw piston pump, you can use the following solutions:

1. First of all, check whether the speed of the piston pump can be adjusted, if so, the speed can be reduced to fit the 15kw motor; 2. Secondly, Jiling checks whether the output flow of the piston pump can be adjusted, and if so, the output flow can be reduced to adapt to the 15kw motor; 3. Finally, check whether the pressure of the piston pump can be adjusted, if so, the pressure can be reduced to fit the 15kw motor. The above is the solution and practice steps of using a 15kw motor to drive a 40kw piston pump, I hope it can help you.