Hydraulic oil tank for hydraulic station

Abstract

The utility model discloses a hydraulic oil tank for a hydraulic station, which relates to the technical field of hydraulic oil tanks and comprises an oil tank body, an oil pump, an air filter and an oil return filter are respectively arranged at the top of the oil tank body, a liquid level meter and a heater are arranged on the side face of the oil tank body, and a heat dissipation component is arranged on the side face of the oil tank body. A platinum resistor temperature sensor is arranged in the oil tank body; through intelligent control of the heat dissipation assembly, heat dissipation is started only when the oil temperature is too high, energy waste caused by continuous heat dissipation in a traditional heat dissipation mode is avoided, and system energy consumption is effectively reduced. Meanwhile, accurate temperature control ensures that the temperature of the hydraulic oil is always kept within a proper range, the working efficiency and stability of a hydraulic system are improved, and the service life of the hydraulic oil and hydraulic elements is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic oil tank technical field especially relates to a hydraulic station is with hydraulic oil tank. BACKGROUND

[0002] In the hydraulic system, the oil temperature control of hydraulic oil tank is crucial to the normal operation and performance stability of the system. In the working process of the hydraulic system, a large amount of heat will be generated due to the energy conversion of hydraulic pump, hydraulic motor and other components and the internal friction of the system, resulting in the increase of oil temperature. Excessive oil temperature can cause a series of problems, such as the reduction of hydraulic oil viscosity, the impact on sealing performance, the increase of leakage risk, the acceleration of oxidation and deterioration of hydraulic oil, the shortening of service life, the reduction of working efficiency and reliability of hydraulic components, and even the damage of components, affecting the normal operation of the entire hydraulic system.

[0003] The existing heat dissipation mode is mostly continuous heat dissipation, that is, the heat dissipation device is always in contact with the oil tank or in working state during the operation of the system, which may cause heat dissipation when the oil temperature does not need to be dissipated or has reached the appropriate temperature, especially in the case of low ambient temperature, which may cause the oil temperature to be too low, affecting the start and normal operation of the hydraulic system. For example, in some intermittent hydraulic equipment, when the equipment stops working for a period of time, the oil temperature may naturally decrease to a low level, and if the heat dissipation device is still working at this time, it will further reduce the oil temperature, resulting in the increase of hydraulic oil viscosity during the next start, the increase of system start-up resistance and energy consumption, and even the impact on the normal start and operation of the equipment due to poor oil flowability.

[0004] Therefore, a new heat dissipation structure is needed, which can flexibly control the contact or separation of the heat dissipation structure and the oil tank according to the actual temperature demand of the oil, to improve the heat dissipation efficiency, avoid unnecessary heat loss, ensure that the oil temperature of the hydraulic oil tank is always within the appropriate range, and ensure the stable operation and efficient work of the hydraulic system. Therefore, based on the above needs, an innovative heat dissipation structure is proposed to solve the problems of low heat dissipation efficiency and inflexible heat loss control in the prior art, and to provide a more efficient, energy-saving and reliable solution for temperature control of hydraulic oil tank. SUMMARY

[0005] The utility model provides a hydraulic station is with hydraulic oil tank, solved the technical problem that the prior art exists low heat dissipation efficiency, heat loss control is not flexible.

[0006] To solve the above technical problems, the utility model provides a hydraulic oil tank for hydraulic station, including the oil tank body, the top of oil tank body is equipped with oil pump, air filter and oil return filter respectively, the side of oil tank body is equipped with liquid level meter and heater, the side of oil tank body is equipped with heat dissipation assembly, the inside of oil tank body is equipped with platinum resistance temperature sensor,

[0007] The heat dissipation assembly includes a heat-conducting substrate, four link assemblies, and a control assembly.

[0008] In some embodiments, the heat-conducting substrate has a plurality of mutually parallel heat dissipation fins on its surface, and a cross-flow fan is arranged on one side of the heat-conducting substrate.

[0009] In some embodiments, magnetic blocks are embedded and installed at the four corners of the back surface of the heat-conducting substrate.

[0010] In some embodiments, the link assembly includes a mounting seat, a connecting rod, and a mounting lug. The mounting seat is fixedly installed on the surface of the oil tank body. One end of the connecting rod is rotatably installed on the side surface of the mounting seat. The mounting lug is integrally formed on the side surface of the heat-conducting substrate. The other end of the connecting rod is rotatably connected to the mounting lug.

[0011] In some embodiments, the control assembly includes a fixed seat, a worm gear reduction motor, a winding wheel, and a steel cable. The fixed seat is fixedly installed on the surface of the oil tank body. The worm gear reduction motor is fixedly installed on the side surface of the fixed seat. The winding wheel is fixedly sleeved on the output end of the worm gear reduction motor. The steel cable is wound on the surface of the winding wheel.

[0012] In some embodiments, a lifting lug is fixedly installed on the top of the heat-conducting substrate. One end of the steel cable is connected to the lifting lug.

[0013] In some embodiments, the lifting lug is located at the central position of the top surface of the heat-conducting substrate. The control assembly is located above the lifting lug.

[0014] Compared with the related art, the hydraulic oil tank for hydraulic station provided by the utility model has the following beneficial effects:

[0015] The hydraulic oil tank for hydraulic station provided by the utility model can only start heat dissipation when the oil temperature is too high through the intelligent control of the heat dissipation assembly, thereby avoiding the energy waste caused by the continuous heat dissipation of the traditional heat dissipation mode and effectively reducing the system energy consumption. At the same time, the accurate temperature control ensures that the hydraulic oil temperature always remains within the appropriate range, which is conducive to improving the working efficiency and stability of the hydraulic system and prolonging the service life of the hydraulic oil and the hydraulic components.

[0016] The utility model provides a hydraulic oil tank for hydraulic station, the design of heat conduction substrate and radiating fin in the heat dissipation assembly increases the heat dissipation area, and the forced air cooling of crossflow fan further improves the heat dissipation efficiency, can reduce the temperature of hydraulic oil fast and effectively, guarantees the normal operation of hydraulic system even under the condition that the system heat quantity is bigger or the ambient temperature is higher, reduces the system failure risk caused by excessively high oil temperature.

[0017] The utility model provides a hydraulic oil tank for hydraulic station, the cooperation of connecting rod assembly and control assembly makes that heat dissipation assembly can contact or separate with oil tank body flexibly, and simple structure and high reliability are provided. The setting of magnetic block ensures the close adhesion of heat dissipation assembly when contacting oil tank, improves the heat conduction efficiency. This structure design not only is convenient to install and maintain, but also can adapt to different working environment and working condition requirement.

[0018] The utility model provides a hydraulic oil tank for hydraulic station, through the accurate monitoring and control to hydraulic oil temperature and the synergies of heat dissipation and heating function, effectively prevent the damage of excessively high or excessively low oil temperature to hydraulic system, such as hydraulic oil viscosity change, oxidation metamorphism, hydraulic element wear etc. problem, improves the reliability and durability of whole hydraulic system, reduces equipment maintenance cost and downtime. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is whole structure schematic view of the utility model;

[0020] Figure 2 It is structure schematic view when heat dissipation assembly and oil tank of the utility model separate;

[0021] Figure 3 It is structure schematic view when heat dissipation assembly and oil tank of the utility model adhere;

[0022] Figure 4 It is heat conduction substrate back side structure schematic view of the utility model;

[0023] Figure 5 It is connecting rod assembly structure schematic view of the utility model;

[0024] Figure 6 It is control assembly structure schematic view of the utility model.

[0025] The following are the labeling elements in the diagram: 1. Oil tank body; 2. Oil pump; 3. Air filter; 4. Return oil filter; 5. Liquid level gauge; 6. Heater; 7. Heat dissipation assembly; 71. Thermal conductive substrate; 72. Heat dissipation fins; 73. Crossflow fan; 74. Connecting rod assembly; 75. Control assembly; 76. Magnetic block; 77. Lifting lug; 741. Mounting base; 742. Connecting rod; 743. Mounting lug; 751. Fixed base; 752. Worm gear reducer motor; 753. Rewinding reel; 754. Steel cable. Detailed Implementation

[0026] Example 1

[0027] This embodiment provides a hydraulic oil tank for a hydraulic station, such as... Figures 1-4 As shown, this utility model includes an oil tank body 1. The top of the oil tank body 1 is provided with an oil pump 2, an air filter 3 and a return oil filter 4. The side of the oil tank body 1 is provided with a level gauge 5 and a heater 6. The side of the oil tank body 1 is provided with a heat dissipation component 7. The inside of the oil tank body 1 is provided with a platinum resistance temperature sensor.

[0028] The heat dissipation assembly 7 includes a heat-conducting substrate 71, a connecting rod assembly 74, and a control assembly 75. There are four connecting rod assemblies 74, which are located at the four corners of the heat-conducting substrate 71. The control assembly 75 is fixedly installed on the side of the oil tank body 1.

[0029] The surface of the heat-conducting substrate 71 is provided with several parallel heat dissipation fins 72, and a crossflow fan 73 is provided on one side of the heat-conducting substrate 71. The air outlet direction of the crossflow fan 73 is parallel to the direction of the heat dissipation fins 72.

[0030] Magnetic blocks 76 are embedded at the four corners of the back side of the thermally conductive substrate 71.

[0031] In this embodiment, the heater 6 is directly inserted into the oil tank to heat the hydraulic oil. During installation, the heater 6 must be completely submerged in the hydraulic oil and kept at a certain distance from the tank wall to avoid localized overheating. A certain area needs to be reserved on the side of the oil tank body 1 for installing the heat dissipation assembly 7. The heat-conducting substrate 71 is made of aluminum alloy, which has good thermal conductivity. Multiple parallel heat dissipation fins 72 are welded onto the surface of the heat-conducting substrate 71 to increase the heat dissipation area and improve heat dissipation efficiency. A crossflow fan 73 is installed on one side of the heat-conducting substrate 71. The crossflow fan 73 is selected with a rated voltage of 24V and an airflow of 100m³ / h. 3The axial flow fan is fixed on the heat-conducting base plate 71 by bolts, and the air outlet direction of the fan is parallel to the direction of the heat dissipation fins 72, so that the air blown by the fan can flow evenly through the heat dissipation fins 72 and carry away heat. In the four corners of the back surface of the heat-conducting base plate 71, magnetic blocks 76 are embedded and installed. The magnetic blocks 76 are made of neodymium-iron-boron permanent magnet material and have strong magnetic force. The magnetic blocks 76 are pasted in the grooves on the back surface of the heat-conducting base plate 71 by glue, so as to ensure that the magnetic blocks 76 are tightly combined with the heat-conducting base plate 71, and when the heat dissipation assembly 7 is attached to the oil tank body 1, sufficient adsorption force can be provided to make the heat dissipation assembly 7 tightly attached to the outer wall of the oil tank, thereby improving the heat conduction efficiency.

[0032] Embodiment Two

[0033] On the basis of Embodiment One, as shown in Figure 5 The connecting rod assembly 74 of the present embodiment includes a mounting seat 741, a connecting rod 742, and a mounting lug 743. The mounting seat 741 is fixedly installed on the surface of the oil tank body 1. One end of the connecting rod 742 is rotatably installed on the side surface of the mounting seat 741. The mounting lug 743 is integrally formed on the side surface of the heat-conducting base plate 71. The other end of the connecting rod 742 is rotatably connected with the mounting lug 743.

[0034] In the present embodiment, four mounting seats 741 are welded on the surface of the oil tank body 1. The mounting seat 741 is made of an L-shaped steel plate with a thickness of 5 mm. The positions of the mounting seats 741 correspond to the mounting lugs 743 at the four corners of the heat-conducting base plate 71, so as to ensure that the connecting rod assembly 74 can accurately connect the heat-conducting base plate 71 and the oil tank body 1.

[0035] Both ends of the connecting rod 742 are provided with shafts for cooperation with the mounting seat 741 and the mounting lug 743 respectively, so as to realize rotatable connection and connect the heat-conducting base plate 71 and the connecting rod 742. The mounting lug 743 is integrally formed on the side surface of the heat-conducting base plate 71 by stamping process, so as to ensure firm and reliable connection.

[0036] Embodiment Three

[0037] On the basis of Embodiment One, as shown in Figure 6 The control assembly 75 of the present embodiment includes a fixing seat 751, a worm gear and worm speed reduction motor 752, a winding wheel 753, and a steel cable 754. The fixing seat 751 is fixedly installed on the surface of the oil tank body 1. The worm gear and worm speed reduction motor 752 is fixedly installed on the side surface of the fixing seat 751. The winding wheel 753 is fixedly sleeved on the output end of the worm gear and worm speed reduction motor 752. The steel cable 754 is wound on the surface of the winding wheel 753. A lifting lug 77 is fixedly installed on the top of the heat-conducting base plate 71. One end of the steel cable 754 is connected with the lifting lug 77. The lifting lug 77 is located at the central position of the top surface of the heat-conducting base plate 71. The control assembly 75 is located above the lifting lug 77.

[0038] In this embodiment, the fixing seat 751 of the control assembly 75 is made of an aluminum alloy plate with a thickness of 8 mm, which is fixed on the surface of the oil tank body 1 by bolts, above the top lifting lug 77 of the heat-conducting base plate 71. The fixing seat 751 is L-shaped with dimensions of 100 mm x 50 mm, so as to stably fix the worm gear reduction motor 752.

[0039] The worm gear reduction motor 752 is fixedly installed on the side of the fixing seat 751. At the output end of the worm gear reduction motor 752, a winding wheel 753 is fixedly sleeved by a key connection mode, and the winding wheel 753 is made of an aluminum alloy wheel with a groove on the surface for winding a steel cable 754.

[0040] The steel cable 754 is made of a stainless steel wire rope with a diameter of 2 mm, one end of which is tightly matched with the groove of the winding wheel 753 and wound on the winding wheel 753, and the other end is connected with the lifting lug 77 at the top of the heat-conducting base plate 71. The lifting lug 77 is made of a steel plate with a thickness of 10 mm, which is fixed on the top surface of the heat-conducting base plate 71 at the central position by welding, so as to stably pull the heat-conducting base plate 71 to rotate around the connecting rod assembly 74 when the steel cable 754 is wound.

[0041] In this embodiment, a platinum resistance temperature sensor is used to monitor the temperature of the hydraulic oil in real time, which is installed inside the oil tank body 1. The platinum resistance temperature sensor is selected as PT100 type, which has high measurement accuracy and good stability, and can accurately reflect the change of oil temperature. The sensor is installed on the side wall of the oil tank near the bottom by a threaded connection mode, and the oil temperature at this position can better represent the average temperature of the oil in the oil tank.

[0042] When the platinum resistance temperature sensor detects that the oil temperature is lower than the set lower limit temperature, such as 20℃, the control system such as PLC or special temperature controller outputs a signal to start the heater 6. The heater 6 starts to heat the hydraulic oil, so that the oil temperature gradually rises. During the heating process, the control system continuously monitors the oil temperature, and adjusts the power of the heater 6 according to the temperature rising rate and the set temperature threshold by using the PID (proportion-integral-derivative) control algorithm, so as to ensure that the oil temperature rises stably above the lower limit temperature, such as 25℃. When the oil temperature reaches 25℃, the control system stops the heater 6 from working, and enters the temperature maintaining stage.

[0043] When the oil temperature is between the lower limit temperature 25℃ and the upper limit temperature, such as 55℃, neither the heating device nor the heat dissipation device works, and the system is in a natural heat dissipation and heat preservation state. The controller continuously monitors the temperature to ensure that the temperature fluctuates within the range, and timely adjusts the control strategy if the temperature tends to exceed the range.

[0044] When the oil temperature is higher than the set upper limit temperature, such as 55℃, the control system outputs a signal to start the worm gear deceleration motor 752. The worm gear deceleration motor 752 drives the winding wheel 753 to rotate and loosen the steel cable 754. The heat dissipation assembly 7 relies on gravity to rotate the heat-conducting base plate 71 around the linkage assembly 74, so that the heat-conducting base plate 71 and the heat dissipation fins 72 and cross-flow fans 73 thereon gradually approach the oil tank body 1 until the magnetic block 76 is tightly adsorbed to the outer wall of the oil tank, at which time the heat dissipation assembly 7 is in full contact with the oil tank and starts to dissipate heat. At the same time, the cross-flow fans 73 are started, and the wind blown by the fans flows along the direction of the heat dissipation fins 72, accelerating heat dissipation. During the heat dissipation process, the control system also uses a PID control algorithm to adjust the speed of the fans according to the temperature drop rate and the set temperature threshold, so that the oil temperature drops smoothly. When the oil temperature drops below the upper limit temperature, such as 50℃, the control system first stops the fan operation, then reverses the worm gear deceleration motor 752, tightens the steel cable 754, and pulls the lifting lug 77 at the top of the heat-conducting base plate 71. Under the action of the linkage assembly 74, the heat-conducting base plate 71 gradually moves away from the oil tank body 1, stops dissipating heat, and the system reenters the temperature maintaining stage.

Claims

1. A hydraulic oil tank for a hydraulic station, comprising a tank body, characterized in that: The top of the oil tank body is respectively provided with an oil pump, an air filter and an oil return filter, the side of the oil tank body is provided with a liquid level gauge and a heater, the side of the oil tank body is provided with a heat dissipation assembly, and the inside of the oil tank body is provided with a platinum resistance temperature sensor; The heat dissipation assembly comprises a heat conduction base plate, a connecting rod assembly and a control assembly, the number of the connecting rod assembly is four, the four connecting rod assemblies are respectively located at the four corners of the heat conduction base plate, and the control assembly is fixedly installed on the side of the oil tank body.

2. The hydraulic oil tank for a hydraulic station according to claim 1, characterized by The surface of the heat conduction base plate is provided with a plurality of mutually parallel heat dissipation fins, one side of the heat conduction base plate is provided with a cross-flow fan, and the direction of the air outlet of the cross-flow fan is parallel to the direction of the heat dissipation fins.

3. The hydraulic oil tank for a hydraulic station according to claim 1, characterized by The back of the heat conduction base plate is inlaid with magnetic blocks at four corners.

4. The hydraulic oil tank for a hydraulic station according to claim 1, characterized by The connecting rod assembly comprises a mounting seat, a connecting rod and a mounting lug, the mounting seat is fixedly installed on the surface of the oil tank body, one end of the connecting rod is rotatably installed on the side of the mounting seat, the mounting lug is integrally formed on the side of the heat conduction base plate, and the other end of the connecting rod is rotatably connected with the mounting lug.

5. The hydraulic oil tank for a hydraulic station according to claim 1, characterized by The control assembly comprises a fixed seat, a worm gear reduction motor, a winding wheel and a steel cable, the fixed seat is fixedly installed on the surface of the oil tank body, the worm gear reduction motor is fixedly installed on the side of the fixed seat, the winding wheel is fixedly sleeved on the output end of the worm gear reduction motor, and the steel cable is wound on the surface of the winding wheel.

6. The hydraulic oil tank for a hydraulic station according to claim 5, characterized by The top of the heat conduction base plate is fixedly installed with an ear, and one end of the steel cable is connected with the ear.

7. The hydraulic oil tank for a hydraulic station according to claim 6, characterized by The ear is located at the central position of the top surface of the heat conduction base plate, and the control assembly is located above the ear.

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