CN211951062U

CN211951062U - Hydraulic control device of integrated hydraulic station

Info

Publication number: CN211951062U
Application number: CN202020423477.1U
Authority: CN
Inventors: 林桂忠; 张树忠; 张兰; 李苏
Original assignee: Fujian University of Technology
Current assignee: Fujian University of Technology
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-11-17
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses a hydraulic control device of hydraulic pressure station integrates, it includes valve block and oil tank, the valve block has an encapsulation shell, from a left side to the right side in proper order fixed be provided with the motor in the encapsulation shell, hydraulic pump and solenoid directional valve, a variable frequency controller is connected to the motor, the hydraulic pump passes through the oil tank of hard tube connection below, the hydraulic pump top is fixed with the overflow valve, the output of hydraulic pump is connected to overflow valve one end, the other end of overflow valve links to the oil tank through the water chiller, solenoid directional valve oil inlet P is connected to the output of hydraulic pump, solenoid directional valve's hydraulic fluid port A butt joint encapsulation shell right side export, be equipped with the cavity transmission shaft in the export of encapsulation shell right side, the cavity transmission shaft other end is equipped with the oil discharge opening and connects the oil inlet of treating drive arrangement through. The utility model discloses plate-type valve to the dispersion installation carries out integrated form valve piece integration installation, noise reduction, vibration to the occupation space that significantly reduces.

Description

Hydraulic control device of integrated hydraulic station

Technical Field

The utility model relates to a hydraulic equipment technical field especially relates to a hydraulic control device at hydraulic pressure station integrates.

Background

The hydraulic station is a power source for providing hydraulic pressure for an external system, and the hydraulic station is a system and mainly comprises an oil tank, an oil pump, a motor, various hydraulic valves, oil pipes, various instruments and the like. The hydraulic station is a power source of hydraulic transmission, and is connected with a driving device (oil cylinder) by an oil pipe according to the flow direction required by the driving device, and the direction and the pressure are regulated and controlled by the driving device (oil cylinder) such as a hydraulic valve, so that various specified actions are realized. At present, the rotating speed of a hydraulic station on the market is too low, and a pulsation torque is generated at low frequency, so that the rotating speed of a motor fluctuates, the stability is poor, the response speed is low, the control precision is low, the noise is large, and an oil leakage event is easy to occur. Under the situation that the problems of energy shortage and environmental pollution are becoming more and more serious, the method is more and more emphasized by people in the aspects of reducing noise, reducing oil leakage, saving resources and the like, and becomes a hotspot of current research.

The hydraulic station is developed successfully in succession, and the plate-type connecting hydraulic valve monomer is adopted for installation, so that the hydraulic station is characterized in that the valve body is flexibly installed, the oil way is clear and clear, and the pipeline connection trend is clear at a glance. However, the existing system: the hydraulic control component, the hydraulic assembly, the feedback component, the energy storage tank and the load system have the advantages of insufficient safety, failure in timely alarming when a fault is found, failure in timely feedback when overvoltage, overcurrent, overload and overheating occur, low control precision, high noise, obvious mechanical vibration phenomenon and oil leakage accompanying phenomenon. The mechanical vibration is mainly forced vibration with frequency corresponding to the rotating speed when the rotating shafts of the electric motor, the hydraulic pump and the hydraulic motor run at high speed. This vibration can be transmitted to other pipes, tanks and valves through the pump station foundation or piping. In the use process of the electric motor, the hydraulic pump and the hydraulic motor, the fit clearance is increased and the positions of parts and bearings are shifted due to abrasion deformation, so that high-frequency vibration is caused. The shaft coupling of the motor and the pump can also generate vibration with the same frequency as the rotating speed due to the fact that the two plum blossom petal shafts are not coaxial and too large in deflection. The most common manifestation of these vibrations is the increased noise of the hydraulic system, sometimes up to 90dB or more

Therefore, the existing system has large connection volume, and particularly, the oil way has excessive joints and contacts, which easily causes oil leakage. In order to solve the problem of oil leakage, in addition, because the pump station needs to work at 80-135 ℃ oil temperature sometimes, the oil circuit adopts hard pipe connection, and then strong vibration is easily generated. In practical field application, oil leakage of pipelines and strong vibration of hydraulic station supports are two major problems which plague the application.

Disclosure of Invention

An object of the utility model is to provide a hydraulic control device at hydraulic pressure station integrates.

The utility model adopts the technical proposal that:

a hydraulic control device of an integrated hydraulic station comprises a valve block and an oil tank arranged below the valve block, wherein the valve block is provided with a packaging shell, a motor, a hydraulic pump and an electromagnetic directional valve are sequentially and fixedly arranged in the packaging shell from left to right corresponding to one side of the oil tank, the motor is connected with a variable frequency controller, the variable frequency controller adjusts the rotating speed and the torque of the motor and drives the motor to control the flow rate and the flow velocity of the hydraulic pump, the hydraulic pump is connected with the oil tank below through a hard pipe, an overflow valve is also fixedly arranged above the hydraulic pump, one end of the overflow valve is connected with the output end of the hydraulic pump, the other end of the overflow valve is communicated with the oil tank through a water cooler, the output end of the hydraulic pump is connected with an oil inlet P of the electromagnetic directional valve, an oil port A of the electromagnetic directional valve is butted with an outlet on the, the other end of the hollow transmission shaft is provided with an oil discharge port and is connected with an oil inlet of the device to be driven through the oil discharge port, and an oil return port of the device to be driven is connected to an oil port B of the electromagnetic directional valve.

Furthermore, the oil passages in the packaging shell are connected by hard pipes.

Furthermore, a flange is sleeved at an outlet on the right side of the packaging shell, and the other end of the flange is sleeved on the hollow transmission shaft, so that leakage of a hydraulic pipeline and tightness between the flange and the packaging shell are prevented.

Further, the flange is installed in a welding mode, so that normal work under high pressure is guaranteed

Furthermore, a sealing ring is arranged between the flange sleeve and the outlet on the right side of the packaging shell so as to ensure that the joint is sealed and oil leakage is avoided.

Furthermore, the oil tank is provided with an oil return port, a flowmeter is arranged on the oil tank corresponding to the oil return port, and the oil return port of the driving device is communicated with the oil tank after being connected with the flowmeter in series.

Further, the flow meter adopts an elliptic gear flow meter.

Further, the hydraulic pump communicates with the oil tank through a first filter.

Further, the output end of the hydraulic pump is connected with the electromagnetic directional valve through a second filter.

Furthermore, a liquid level detector is arranged in the oil tank and displays the liquid level through a liquid level display, and the liquid level display is fixed on the surface of the valve block.

Furthermore, an oil port A of the electromagnetic directional valve is connected with a directional pressure sensor, the output end of the directional pressure sensor is connected with a touch screen pressure display, and the touch screen pressure display is fixed on the surface of the valve block.

The utility model adopts the above technical scheme, hydraulic pressure station sump oil tank, hydraulic pump, motor, various hydrovalve, oil pipe, various instrument are integrated as an organic whole. The variable frequency controller is combined with the motor and is connected with the hydraulic pump through a shaft, so that the flow and the flow speed of the hydraulic pump are controlled. The electromagnetic directional valve and the overflow pressure regulating valve are respectively arranged on two different planes on the valve block, and a plurality of filters are arranged on an oil circuit on the plane where the electromagnetic directional valve is arranged. The utility model discloses a with electromagnetic directional valve and overflow air-vent valve and liquid level display, touch-sensitive screen pressure display, filter and oval gear flowmeter integration install the valve block on, the oil feeding station improves the back, eliminates oil leakage and vibration effect obvious. The utility model discloses a flange realizes the control of flow size with the hydrovalve to realize the output of hydraulic oil through the oil discharge opening, realize drive arrangement's motion. The hydraulic station is a power source of hydraulic transmission, the hydraulic station is connected with a driving device by an oil pipe according to the flow direction required by the driving device, and the direction and the pressure are regulated and controlled by the driving device such as a hydraulic valve, so that various specified actions are realized. The utility model discloses to oil leak, noise and the vibration problem of hydraulic power unit in the production reality, carry out the integrated form to original monomer board-like connection hydraulic pressure valves and improve, reduced the noise and overcome the emergence of vibration and oil leak phenomenon.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments;

fig. 1 is a hydraulic principle schematic diagram of a hydraulic control device of an integrated hydraulic station according to the present invention;

fig. 2 is a schematic structural diagram of a valve block of a hydraulic control device of an integrated hydraulic station according to the present invention;

FIG. 3 is a schematic view of the oil discharge port of the present invention;

fig. 4 is a schematic view of the flange structure of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. The technical solution in the present application will be described below with reference to the accompanying drawings.

As shown in fig. 1 to 4, the utility model discloses a hydraulic control device of hydraulic pressure station integrates, it includes the valve block and locates oil tank 1 of valve block below, as shown in fig. 2, the valve block has an enclosure 20, and enclosure 20's upper end has a rings 21 and is convenient for hoist and mount and fix. A motor 4, a hydraulic pump 3 and an electromagnetic directional valve 12 are sequentially and fixedly arranged in the packaging shell 20 from left to right corresponding to one side of the oil tank 1, the motor 4 is connected with a variable frequency controller 5, the variable frequency controller 5 adjusts the rotating speed and the torque of the motor 4 and drives the motor 4 to control the flow and the flow rate of the hydraulic pump 3, the hydraulic pump 3 is connected with the oil tank 1 below the hydraulic pump 3 through a hard pipe, an overflow valve 9 is further fixed above the hydraulic pump 3, one end of the overflow valve 9 is connected with the output end of the hydraulic pump 3, the other end of the overflow valve 9 is communicated to the oil tank 1 through a water cooler 7, the output end of the hydraulic pump 3 is connected with an oil inlet P of the electromagnetic directional valve 12, an oil port A of the electromagnetic directional valve 12 is butted with the right outlet of the packaging shell 20, a hollow transmission shaft 25 is arranged in the right outlet of the packaging shell 20, the output of the oil port A The hollow transmission shaft 25 is different from a transmission shaft of an automobile type and only plays a role of protection, so that a hollow structure is adopted.

As shown in fig. 3, the oil discharge port 23 has an oil discharge port structure of a conventional hydraulic pump. An oil return port of the device to be driven 14 is connected to the oil port B of the electromagnetic directional valve 12.

Further, the connections of the oil passages in the enclosure 20 are all hard pipe connections.

Further, as shown in fig. 2, a flange 22 is sleeved at an outlet on the right side of the enclosure 20, and the other end of the flange 22 is sleeved on the hollow transmission shaft 25 to prevent leakage of the hydraulic pipeline and tightness between the flange 22 and the enclosure 20.

Further, the flange 22 is installed by welding, so as to ensure normal operation under high pressure. The flange 22 is used solely for the connection, mainly for the welding,

further, a sealing ring 24 is provided between the flange 22 and the outlet on the right side of the enclosure 20 to ensure the sealing of the joint against oil leakage.

Specifically, flange 22 is installed at the outlet of valve block integrated enclosure 20 under lifting ring 21 by welding, and sealing ring 24 is used between the flange and the enclosure to prevent leakage of hydraulic pipes and tightness between the flange and the enclosure. The flange 22 is mounted by welding to ensure normal operation under high pressure. The other end of the flange 22 is connected with a hollow transmission shaft 25, the transmission shaft is different from a traditional automobile transmission shaft, a hollow form is adopted, a hydraulic pipeline can conveniently pass through, the hollow transmission shaft 25 is mainly used for protecting the hydraulic pipeline and preventing the hydraulic pipeline from breaking, the mounting flange 22 is convenient to detach, good in sealing performance and capable of conveniently replacing and cleaning the pipeline. Finally, the hydraulic oil is output through the oil discharge port 23, the movement of the driving device is realized, and the normal operation of the actuator is ensured.

Further, the oil tank 1 is provided with an oil return port, the flowmeter 8 is arranged on the oil tank 1 corresponding to the oil return port, and the oil return port of the device 14 to be driven is communicated with the oil tank 1 after being connected with the flowmeter 8 in series.

Further, the flow meter 8 employs an oval gear flow meter 8.

Further, the hydraulic pump 3 communicates with the oil tank 1 through the first filter 2.

Further, the output end of the hydraulic pump 3 is connected to the electromagnetic directional valve 12 through the second filter 10.

Furthermore, a liquid level detector is arranged in the oil tank 1 and displays the liquid level through a liquid level display 11, and the liquid level display 11 is fixed on the surface of the valve block.

Further, an oil port A of the electromagnetic directional valve 12 is connected with a directional pressure sensor, an output end of the directional pressure sensor is connected with a touch screen pressure display 13, and the touch screen pressure display 13 is fixed on the surface of the valve block.

The utility model discloses a variable frequency speed motor provides power for the hydraulic pump, and the hydraulic pump provides pressure for hydraulic oil, through the filter, to two-position four-way solenoid directional valve, arrives again and treats drive arrangement, gets back to the oil tank through oval gear flowmeter at last. If the pressure of the hydraulic oil pumped into the oil way is too high, the hydraulic oil passes through the overflow valve and then passes through the water cooler and returns to the oil tank. The touch screen pressure display (with a built-in pressure sensor) mainly feeds back the pressure of the outlet of the two-position four-way electromagnetic directional valve in real time, the pressure valve mainly feeds back the pressure of the hydraulic oil passing through the hydraulic pump in real time, and the hydraulic oil passes through the overflow valve and is returned to the oil tank when the pressure exceeds the rated pressure.

The normal working temperature of the hydraulic station of the utility model is usually 80-135 ℃, so the hydraulic station adopts hard pipe connection. Adopt the interconnect between the valve body of intensification, the service length of can effectual reduction hard tube, the degree that can effectual reduction vibration, under the effect of sealing washer 24, more effective reduction oil leak phenomenon. The integrated valve block integration installation is carried out on the plate type valves which are dispersedly installed, a standard loop is formed by standard elements or standard parameter elements according to typical blocks and typical actions, the design time and the change of a basic loop and a hydraulic system of a manufacturing period can be greatly shortened, and the integrated valve block integration installation is flexible. Can save a large number of connecting pipes and joints, and has compact structure and small occupied space. The distance between the hydraulic elements is short, the oil passage is short, the pressure loss is small, the heating is small, the heat dissipation is good, and the efficiency is high. Vibration caused by connecting pipes is reduced and leakage caused by a large number of pipes and joints is also reduced. The utility model discloses a hydraulic system stability is good installation, maintenance, convenient to use do benefit to universalization, systematization, standardization.

The utility model adopts the above technical scheme, hydraulic pressure station sump oil tank 1, hydraulic pump 3, motor 4, various hydrovalve, oil pipe, various instrument are integrated as an organic whole. The variable frequency controller 5 is combined with the motor and is connected with the hydraulic pump 3 through a shaft, so that the flow and the flow speed of the hydraulic pump 3 are controlled. The electromagnetic directional valve 12 and the overflow pressure regulating valve are respectively arranged on two different planes on the valve block, and a plurality of filters are arranged on an oil path of the plane where the electromagnetic directional valve 12 is arranged. The utility model discloses a with electromagnetic directional valve 12 and overflow air-vent valve and liquid level display 11, touch-sensitive screen pressure display 13, filter and oval gear flowmeter 8 integration install the valve block on, the fuel feeding station improves the back, eliminates oil leakage and vibration effect obvious. The utility model discloses a flange 22 realizes the control of flow size with the hydrovalve to realize the output of hydraulic oil through oil discharge 23, realize drive arrangement's motion. The hydraulic station is a power source of hydraulic transmission, the hydraulic station is connected with a driving device by an oil pipe according to the flow direction required by the driving device, and the direction and the pressure are regulated and controlled by the driving device such as a hydraulic valve, so that various specified actions are realized. The utility model discloses to oil leak, noise and the vibration problem of 3 stations in the production reality of hydraulic pump, carry out the integrated form improvement to original monomer board-like connection hydraulic valve group, reduced the noise and overcome the emergence of vibration and oil leak phenomenon.

In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Claims

1. The utility model provides a hydraulic control device of hydraulic pressure station integrates which characterized in that: the hydraulic control valve comprises a valve block and an oil tank arranged below the valve block, wherein the valve block is provided with a packaging shell, a motor, a hydraulic pump and an electromagnetic directional valve are fixedly arranged in the packaging shell from left to right corresponding to one side of the oil tank in sequence, the motor is connected with a variable frequency controller, the variable frequency controller adjusts the rotating speed and the torque of the motor and drives the motor to control the flow rate and the flow velocity of the hydraulic pump, the hydraulic pump is connected with the oil tank below through a hard pipe, an overflow valve is further fixed above the hydraulic pump, one end of the overflow valve is connected with the output end of the hydraulic pump, the other end of the overflow valve is communicated to the oil tank through a water cooler, the output end of the hydraulic pump is connected with an oil inlet P of the electromagnetic directional valve, an oil port A of the electromagnetic directional valve is butted with an outlet on the right side of the packaging shell, a hollow transmission shaft is arranged, and an oil return port of the device to be driven is connected to an oil port B of the electromagnetic directional valve.

2. The hydraulic control device of an integrated hydraulic station according to claim 1, characterized in that: the oil circuit in the packaging shell is connected by adopting a hard tube.

3. The hydraulic control device of an integrated hydraulic station according to claim 1, characterized in that: the right outlet of the packaging shell is sleeved with a flange, the other end of the flange is sleeved on the hollow transmission shaft, and leakage of a hydraulic pipeline and tightness between the flange and the packaging shell are prevented.

4. The hydraulic control device of an integrated hydraulic station according to claim 3, characterized in that: the flange is installed in a welding mode, and normal work under high pressure is guaranteed.

5. The hydraulic control device of an integrated hydraulic station according to claim 3, characterized in that: and a sealing ring is arranged between the flange sleeve and the outlet on the right side of the packaging shell so as to ensure that the joint is sealed and oil leakage is avoided.

6. The hydraulic control device of an integrated hydraulic station according to claim 1, characterized in that: the oil tank is provided with an oil return port, a flowmeter is arranged on the oil tank corresponding to the oil return port, and the oil return port of the driving device is communicated with the oil tank after being connected with the flowmeter in series.

7. The hydraulic control device of an integrated hydraulic station according to claim 6, wherein: the flowmeter adopts an elliptic gear flowmeter.

8. The hydraulic control device of an integrated hydraulic station according to claim 1, characterized in that: the hydraulic pump is communicated with the oil tank through a first filter, and the output end of the hydraulic pump is connected with the electromagnetic directional valve through a second filter.

9. The hydraulic control device of an integrated hydraulic station according to claim 1, characterized in that: and a liquid level detector is also arranged in the oil tank and displays the liquid level through a liquid level display, and the liquid level display is fixed on the surface of the valve block.

10. The hydraulic control device of an integrated hydraulic station according to claim 1, characterized in that: an oil port A of the electromagnetic directional valve is connected with a directional pressure sensor, the output end of the directional pressure sensor is connected with a touch screen pressure display, and the touch screen pressure display is fixed on the surface of the valve block.