CN114704511B - Hydraulic oil tank and hydraulic system - Google Patents

Abstract

The disclosure relates to a hydraulic oil tank and a hydraulic system, wherein the hydraulic oil tank includes an oil storage component and a heat dissipation component, the oil storage component includes an oil inlet pipe, a barrel structure and an oil outlet pipe, the barrel structure has a closed annular cavity, and The oil pipe is used to connect the oil return line of the hydraulic system and the barrel structure, and the oil outlet pipe is used to connect the oil supply line of the hydraulic system with the annular cavity. plate; the cooling assembly includes a plurality of heat pipes, and the plurality of heat pipes are distributed at intervals along the circumferential direction of the annular cavity. The extension direction of the heat pipes is consistent with the axial direction of the barrel structure. The deflector extends to the outside of the barrel structure. The hydraulic oil tank of the present disclosure has good cooling effect, compact structure and high stability of the hydraulic system.

Description

Hydraulic oil tank and hydraulic system

technical field

The present disclosure relates to the technical field of mechanical equipment, in particular to a hydraulic oil tank and a hydraulic system.

Background technique

The hydraulic system is an important system module in mechanical equipment. However, the stability of the hydraulic system is closely related to the temperature of the internal hydraulic fluid.

Generally, a hydraulic system includes a hydraulic oil tank and a hydraulic oil cooler. The hydraulic oil tank is used to store hydraulic oil, and the hydraulic oil cooler is used to cool the hydraulic oil in the hydraulic oil tank. Among them, most common hydraulic oil coolers are air-cooled. Hydraulic oil cooler or water-cooled hydraulic oil cooler.

Therefore, in the above-mentioned hydraulic system, the integration degree of the hydraulic oil tank and the hydraulic oil cooler is low, and the cooling capacity of the above-mentioned hydraulic oil cooler will decrease with the increase of use time, so that the stability of the hydraulic system is low.

Contents of the invention

In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a hydraulic oil tank and a hydraulic system, which have a compact overall structure, better cooling effect and durability, and higher stability of the hydraulic system.

In one aspect, the present disclosure provides a hydraulic oil tank, which includes an oil storage assembly and a heat dissipation assembly. The oil storage assembly includes an oil inlet pipe, a barrel structure and an oil outlet pipe. The barrel structure has a closed annular cavity, and the oil inlet pipe is used for communication. The oil return pipeline and barrel structure of the hydraulic system, the oil outlet pipe is used to connect the oil supply pipeline of the hydraulic system and the annular cavity, and the inner peripheral wall of the annular cavity is provided with a deflector that spirals up along the inner peripheral wall of the annular cavity; the heat dissipation component It includes a plurality of heat pipes, which are distributed at intervals along the circumference of the annular cavity. The extension direction of the heat pipes is consistent with the axial direction of the barrel structure. One end of the heat pipe is connected to the bottom wall of the annular cavity, and the other end of the heat pipe passes through the deflector extending out of the barrel structure.

In the hydraulic oil tank provided by the present disclosure, the deflector is in close contact with the inner peripheral wall and the outer peripheral wall of the annular chamber.

In the hydraulic oil tank provided by the present disclosure, the cooling assembly further includes a plurality of fins, the plurality of fins are arranged on one side of the barrel structure along the axial direction of the barrel structure, and the plurality of fins are divided into a plurality of fins along the barrel structure. Fin groups distributed at intervals in the circumferential direction, the fin group includes a plurality of fins distributed along the axial direction of the barrel structure, the extending direction of the fins is consistent with the circumferential direction of the barrel structure; the fin groups are arranged correspondingly to the heat pipes Each fin has a through hole through which the heat pipe penetrates, so that the heat pipe penetrates the corresponding fin group in the axial direction of the barrel structure.

In the hydraulic oil tank provided in the present disclosure, the cooling assembly further includes a fan structure and an air guide structure, and the fan structure and the barrel structure are relatively distributed on both sides of the plurality of fins along the axial direction of the barrel structure; one end of the air guide structure is connected to the The barrel structure is detachably connected, and the other end of the air guide structure is detachably connected to the fan structure. The air guide structure includes a plurality of air guide plates distributed along the circumferential direction of the barrel structure, and the air guide plates are located on two adjacent wings. between slice groups.

In the hydraulic oil tank provided in the present disclosure, the cooling assembly further includes a partition, and the partition is located between the barrel structure and the plurality of fins in the axial direction of the barrel structure.

In the hydraulic oil tank provided by the present disclosure, the barrel structure includes an inner barrel and an outer barrel that communicate with each other, the outer barrel is coaxially sleeved outside the inner barrel, an annular cavity is formed between the outer barrel and the inner barrel, and the inner barrel The outer side wall forms the inner peripheral wall of the annular cavity, the inner side wall of the outer barrel forms the outer peripheral wall of the annular cavity, and part of the inner bottom wall of the outer barrel forms the bottom wall of the annular cavity.

In the hydraulic oil tank provided by the present disclosure, a conduction gap is provided on the side wall of the inner barrel body, the conduction gap penetrates the side wall of the inner barrel body in the radial direction, and the conduction gap communicates with the inner cavity of the inner barrel body and the annular cavity.

In the hydraulic oil tank provided by the present disclosure, the conduction gap is located on the side wall of the inner barrel close to the bottom of the inner barrel.

In the hydraulic oil tank provided by the present disclosure, the barrel structure further includes a filter element, which is arranged in the inner cavity of the inner barrel body to form a cavity between the filter element and the inner barrel body, and the oil inlet pipe is used to communicate with the oil return line and the inner barrel body. The filter element; the filter element is provided with a plurality of oil leakage holes, and the oil leakage holes communicate with the inner cavity and the cavity of the filter element.

In another aspect, the present disclosure provides a hydraulic system, including the above-mentioned hydraulic oil tank.

In the hydraulic oil tank and hydraulic system provided by the present disclosure, the hydraulic oil tank includes an oil storage component and a cooling component, the oil storage component includes an oil inlet pipe, a barrel structure and an oil outlet pipe, and the barrel structure has a closed annular cavity for the oil inlet pipe. For connecting the oil return pipeline of the hydraulic system and the barrel structure, the oil outlet pipe is used to connect the oil supply pipeline of the hydraulic system and the annular cavity, and the inner peripheral wall of the annular cavity is provided with a deflector that spirals up along the inner peripheral wall of the annular cavity; The heat dissipation assembly includes a plurality of heat pipes, which are distributed at intervals along the circumferential direction of the annular cavity. The extension direction of the heat pipes is consistent with the axial direction of the barrel structure. The flow plate extends outside the barrel structure. In this way, the oil entering the barrel structure will flow along the spiral deflector. During the flow, the heat of the oil itself will be transferred to the heat pipe, and the working medium in the heat pipe will evaporate and be transferred to the heat pipe in the state of steam. The other end of the heat pipe is used to transfer heat to the outside of the barrel structure to complete the cooling and heat dissipation of the hydraulic oil. The hydraulic oil tank provided by the present disclosure has good cooling effect and compact structure, so that the hydraulic system provided by the present disclosure has strong stability.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings without paying creative labor.

FIG. 1 is a schematic diagram of a three-dimensional structure of a hydraulic oil tank provided by an embodiment of the present disclosure;

Fig. 2a is a schematic perspective view of the three-dimensional structure of the oil storage assembly in the hydraulic oil tank provided by the embodiment of the present disclosure;

Figure 2b is a sectional view along the A-A direction of Figure 2a;

FIG. 3 is a schematic perspective view of a partial structure of a hydraulic oil tank provided by an embodiment of the present disclosure;

Fig. 4 is a schematic diagram of the three-dimensional structure of the inner barrel in the hydraulic oil tank provided by the embodiment of the present disclosure;

5 is a schematic diagram of a three-dimensional structure of a filter element in a hydraulic oil tank provided by an embodiment of the present disclosure;

FIG. 6 is a schematic perspective view of another part of the structure of the hydraulic oil tank provided by an embodiment of the present disclosure;

Fig. 7 is a three-dimensional structural schematic diagram of an air guide structure in a hydraulic oil tank provided by an embodiment of the present disclosure;

Fig. 8 is a schematic perspective view of another partial structure of the hydraulic oil tank provided by an embodiment of the present disclosure.

Among them, 1-oil storage component; 2-heat dissipation component;

10-hydraulic oil tank; 11-oil inlet pipe; 12-barrel structure; 13-oil outlet pipe; 21-heat pipe; 22-fin; 23-fan structure; 24-wind guide structure; 25-baffle;

121-annular cavity; 122-deflector; 123-inner barrel; 124-outer barrel; 125-filter; 126-cavity; 221-third round hole; 22a-fin group; 231-fan; - fan casing; 241 - frame body; 242 - wind deflector; 251 - the fourth round hole;

1221-first round hole; 1231-first barrel body; 1232-end cover; 1233-first opening; 1234-second round hole; 1235-installation hole; 1236-second threaded hole; 1237-conduction gap 1238-the first connecting convex; 1239-the second connecting hole; 1241-the second barrel part; The first threaded hole; 1255-oil leakage hole; 2321-the third connection hole; 2411-the first ring frame body; 2412-the second ring frame body; 2413-the first connection hole; 2414-the second connection convex; 2415- The fourth connecting hole.

detailed description

In order to more clearly understand the above objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, in the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the present disclosure, but the present disclosure can also be implemented in other ways than described here; obviously, the embodiments in the description are only some of the embodiments of the present disclosure, and Not all examples.

The hydraulic system is an important system module in mechanical equipment. However, the stability of the hydraulic system is closely related to the temperature of the internal hydraulic fluid. The field of high-end mobile equipment puts forward compact and lightweight design requirements for hydraulic systems and components. The application of lightweight non-metallic materials leads to the inability to transfer heat from the inside of the fuel tank to the outer surface of the fuel tank in time. The compact fuel tank design reduces the weight of the fuel tank itself. Therefore, in order to make the hydraulic system work stably, the hydraulic oil cooler needs to have better cooling and heat dissipation effects.

Common hydraulic oil coolers mainly include air-cooled coolers and water-cooled coolers. The air-cooled cooler is installed on the oil return pipeline. Air is used as the cooling medium to cool the hydraulic oil through heat exchange between the side wall of the cooler and the high-temperature oil. The oil flowing through the cooler has many impurities without filtering. Use will cause the cooling capacity of the cooler to drop or even be blocked; water-cooled coolers generally require an additional cooling water cooling system. Common water-cooled coolers include coil coolers, multi-tube coolers and fin coolers. Among them, The coil cooler needs to arrange cooling pipes in the oil tank, which needs to occupy a large space in the oil tank and has low heat transfer efficiency; the multi-tube cooler and fin cooler need to be equipped with an additional water-oil heat exchange device, which has poor integration , The scale generated by the cooling water will reduce its heat dissipation capacity. If the water cooling pipe leaks, the cooling water will mix with the oil, which will cause the hydraulic oil to deteriorate and seriously affect the normal operation of the hydraulic system.

Therefore, the above-mentioned hydraulic oil cooler has problems such as pipeline blockage and reduced heat dissipation capacity, which will lead to defects such as impurities in the oil, deterioration of the oil, leakage caused by reduced viscosity, accelerated aging of seals, overflow of dissolved gas, abnormal wear of components, etc. , affecting the stable operation of the hydraulic system, and the hydraulic oil tank cannot be integrated with the cooler, which cannot meet the design requirements of compact integration of the hydraulic system.

In order to overcome the above-mentioned defects, this embodiment provides a hydraulic oil tank and a hydraulic system, wherein the hydraulic oil tank integrates the barrel structure for storing oil and the cooling assembly for heat dissipation of the oil, especially adopts heat pipes and The spiral deflector conducts the heat of the oil to the heat pipe through the heat pipe and the deflector, so as to promote the evaporation of the working medium in the heat pipe, so as to transfer the heat of the oil to the outside of the barrel structure, so as to complete the cooling of the oil. cooling and cooling.

It should be noted that the above-mentioned heat pipe is generally composed of a tube shell, a liquid-absorbing core and an end cap. After pumping the inside of the tube to a negative pressure of 1.3×(10 ^-1 ~10 ^-4 ) Pa, it is filled with an appropriate amount of working liquid, so that the tight The capillary porous material of the liquid-absorbing core attached to the inner wall of the tube is filled with liquid and then sealed. The working liquid is selected according to the environment. Specifically, one end of the tube is an evaporation section (heating section), and the other end is a condensation section (cooling section). When one end of the heat pipe is heated, the liquid in the wool core evaporates and vaporizes, and the steam flows to the other end under a small pressure difference to release heat and condenses into a liquid, and the liquid flows back to the evaporation section along the porous material by capillary force. This cycle is endless, heat is transferred from one end of the heat pipe to the other end.

The hydraulic oil tank and the hydraulic system provided by this embodiment will be described in detail below with reference to the drawings and specific implementation methods.

Please refer to Fig. 1, Fig. 2a, Fig. 2b and Fig. 3, Fig. 1 is a schematic diagram of the three-dimensional structure of the hydraulic oil tank provided by the embodiment of the present disclosure, and Fig. 2a is the three-dimensional structure of the oil storage assembly in the hydraulic oil tank provided by the embodiment of the present disclosure Schematic diagram, FIG. 2b is a cross-sectional view of FIG. 2a along the direction A-A, and FIG. 3 is a perspective structural diagram of a partial structure of a hydraulic oil tank provided by an embodiment of the present disclosure.

As shown in Figures 1 to 3, this embodiment provides a hydraulic oil tank 10, including an oil storage assembly 1 and a cooling assembly 2, the oil storage assembly 1 includes an oil inlet pipe 11, a barrel structure 12 and an oil outlet pipe 13, the barrel The body structure 12 has a closed annular cavity 121, the oil inlet pipe 11 is used to communicate with the oil return line of the hydraulic system and the barrel structure 12, the oil outlet pipe 13 is used to communicate with the oil supply line of the hydraulic system and the annular cavity 121, and the annular cavity 121 A deflector 122 spirally rising along the inner peripheral wall of the annular cavity 121 is provided on the inner peripheral wall of the annular cavity 121; the heat dissipation assembly 2 includes a plurality of heat pipes 21, and the plurality of heat pipes 21 are distributed along the circumferential direction of the annular cavity 121 at intervals, and the extension direction of the heat pipes 21 is in line with the The barrel structure 12 has the same axial direction, one end of the heat pipe 21 is connected to the bottom wall of the annular chamber 121 , and the other end of the heat pipe 21 extends out of the barrel structure 12 through the deflector 122 . In the hydraulic oil tank 10 provided in this embodiment, the oil in the oil return line enters the barrel structure 12 through the oil inlet pipe 11, and the oil flows along the deflector 122, and the oil flows along the deflector 122. During the process, the heat of the oil will be transferred to the heat pipe 21. The heat pipe 21 located in the barrel structure 12 is the evaporation section of the heat pipe 21. The evaporation section absorbs heat to make the liquid inside the heat pipe 21 vaporize. Flow to the heat pipe 21 located outside the barrel structure 12, that is, the condensation section of the heat pipe 21, so that the heat of the oil liquid in the barrel structure 12 can be transferred to the outside of the barrel structure to cool the oil liquid. In the example, since the deflector 122 is helical, the flow path of the oil is extended, the number of heat exchanges between the high-temperature oil and the heat pipe 21 is increased, and the heat exchange area of the evaporation section of the heat pipe 21 is fully utilized. The hydraulic oil is restricted to spiral flow in the annular chamber 121, which increases the speed of scouring the heat pipe 21, and the oil will generate a secondary flow perpendicular to the main flow direction during the spiral flow, increasing the flow rate and the generation of secondary flow can enhance heat transfer strength, and at the same time, the hydraulic oil can exchange heat with the external environment through the barrel wall of the barrel structure 12, thereby improving the heat dissipation effect. Furthermore, since the barrel structure 12 has an annular cavity 121, the cooling channel of the hydraulic oil is a relatively independent space, which avoids the mixing of the cooled low-temperature oil and the uncooled high-temperature oil, thus making this implementation The hydraulic oil tank 10 provided by the example has better heat dissipation effect.

It should be noted that, in order to allow the oil to flow along the channel defined by the deflector 122 and the annular cavity 121 , in some optional implementations, the deflector 122 is in close contact with the inner and outer peripheral walls of the annular cavity 121 . In this way, the oil passage defined by the deflector 122 and the annular cavity 121 can be defined more precisely, and the heat exchange area of the evaporation section of the heat pipe 21 can be fully utilized.

Further, the pitch of the deflector 122 and the diameter of the annular cavity 121 need to be determined in combination with the heat exchange intensity and oil return back pressure. Here, there is no specific limitation on the pitch of the deflector 122 and the diameter of the annular cavity 121 .

Please refer to FIG. 2 a , FIG. 2 b and FIG. 4 . FIG. 4 is a three-dimensional structural schematic diagram of an inner barrel in a hydraulic oil tank provided by an embodiment of the present disclosure. In order to define a closed annular cavity 121, in this embodiment, the barrel structure 12 includes an inner barrel 123 and an outer barrel 124 that communicate with each other, the outer barrel 124 is coaxially sleeved outside the inner barrel 123, and the inner barrel 123 includes The first barrel part 1231 and the end cover 1232, the first barrel part 1231 has a first opening 1233, the outer barrel 124 includes a second barrel part 1241, the second barrel part 1241 has a second opening 1242, the end cover 1232 The cover is arranged on the first opening 1233 and the second opening 1242, the end cover 1232, the outer side wall of the first barrel part 1231, the barrel bottom of the second barrel part 1241 and the inner side wall of the second barrel part 1241 Form an annular cavity 121, wherein, the end cover 1232, the first barrel part 1231, the second barrel part 1241 and the deflector 122 can be integrally formed, for example, the first barrel part 1231 and the second barrel Parts 1241 are all welded on the end surface of end cover 1232, and deflector 122 is welded on the outer wall of first barrel part 1231. Here, the connection mode between first barrel part 1231 and end cover 1232, the second The connection manner between the second barrel portion 1241 and the end cover 1232 and the connection manner between the deflector 122 and the first barrel portion 1231 are not specifically limited.

Furthermore, one end of the heat pipe 21 is connected to the barrel bottom of the second barrel portion 1241, and the other end of the heat pipe 21 passes through the deflector 122 and the end cover 1232 to extend out of the barrel structure 12, specifically, the deflector 122 There are a plurality of first round holes 1221 through which the heat supply pipes 21 pass, and the end cover 1232 is provided with a plurality of second round holes 1234 through which the heat supply pipes 21 pass through. The first round holes 1221 and the second round holes 1234 are both It is arranged corresponding to the heat pipe 21 , and the axial directions of the first round hole 1234 and the second round hole 1221 are both consistent with the axial direction of the barrel structure 12 .

Please refer to FIG. 2 b and FIG. 5 . FIG. 5 is a schematic perspective view of a filter element in a hydraulic oil tank provided by an embodiment of the present disclosure. As shown in Figure 2b and Figure 5, in order to filter the impurities in the oil, keep the oil clean to ensure the normal operation of the hydraulic system, and at the same time prevent the impurities from adhering to the internal components to reduce the heat exchange intensity, in this embodiment, The barrel structure 12 also includes a filter element 125, the filter element 125 is arranged in the inner cavity of the inner barrel body 123 to form a cavity 126 between the filter element 125 and the inner barrel body 123, and the oil inlet pipe 11 is used to communicate with the oil return pipeline and filter Part 125; Specifically, the filter part 125 includes a third barrel part 1251 and a cover plate 1252, and the third barrel part 1251 extends into the inner cavity of the inner barrel body 123 after passing through the mounting hole 1235 on the end cover 1232, and the third barrel part 1251 The barrel part 1251 has a third opening 1253, the cover plate 1252 is set on the third opening 1253, and the cover plate 1252 is integrally formed with the third barrel part 1251, for example, the cover plate 1252 is welded on the third barrel part 1251 Above, here, there is no specific limitation on the connection method between the cover plate 1252 and the third barrel part 1251. In order to install the filter element 125 on the inner barrel body 123, in the specific implementation of this embodiment, the cover plate 1252 is provided with a first threaded hole 1254, and the end cover 1232 is provided with a second threaded hole 1236. The second threaded hole 1236 is set corresponding to the first threaded hole 1254, and the axial direction of the second threaded hole 1236 is the same as that of the first threaded hole. The axial direction of 1254 is consistent with the axial direction of barrel structure 12 , and threaded fasteners can pass through the first threaded hole 1254 and the second threaded hole 1236 to detachably connect the cover plate 1252 and the end cover 1232 . It should be noted that, in some other embodiments, other connection methods can also be used between the cover plate 1252 and the end cover 1232, as long as the detachable connection between the cover plate 1252 and the end cover 1232 can be achieved. Purpose of the example. In this way, when the impurities in the filter element 125 accumulate more, the filter element 125 can be removed from the inner barrel body 123 to clean or replace the filter element 125 .

In order to allow the filtered oil to flow into the cavity 126, in a specific implementation of this embodiment, a plurality of oil leakage holes 1255 are opened on the side wall of the third barrel portion 1251, and the oil leakage holes 1255 communicate with the filter element. The lumen of 125 and cavity 126. Further, in order to allow the oil in the cavity 126 to flow into the annular cavity 121, a conduction notch 1237 is opened on the side wall of the first barrel part 1231, and the conduction notch 1237 penetrates the inner barrel 123 in the radial direction of the inner barrel 123 The side wall, the conduction gap 1237 communicates with the cavity 126 and the annular cavity 121; and due to the effect of gravity and oil return pressure, the oil flowing out from the oil leakage hole 1255 will flow to the side facing the ground. Therefore, in order to make More oil can flow into the annular cavity 121 . In this embodiment, the conduction gap 1237 is located on the side wall of the first barrel portion 1231 near the bottom of the inner barrel 123 .

It should be noted that a filter element is arranged in the filter element 125 to filter the oil. In the hydraulic oil tank 10 provided in this embodiment, the flow direction of the oil is as follows. First, the oil enters the filter element 125 from the oil inlet pipe 11, and after being filtered by the filter element 125, the filtered oil flows in through the oil leakage hole 1255. In the cavity 126, the oil in the cavity 126 flows into the annular cavity 121 through the conduction gap 1237, and under the action of the deflector 122, the oil flows upward along the spiral channel formed by the deflector 122 in the annular cavity 121 , wash the heat pipe 21, transfer the heat of the oil to the heat pipe 21, vaporize the working medium in the heat pipe 21, and further transfer the heat from the evaporation section of the heat pipe 21 to the condensation section of the heat pipe 21, that is, outside the barrel structure 12, when When the oil in the annular cavity 121 flows to the oil outlet pipe 13 , it flows into the oil supply circuit through the oil outlet pipe 13 .

In order to effectively dissipate the heat in the condensation section of the heat pipe 21, in some optional embodiments, the heat dissipation assembly 2 further includes a plurality of fins 22, and the plurality of fins 22 are arranged on the barrel structure 12 along the barrel structure 12. One side of the axial direction, and a plurality of fins 22 are located on the side of the barrel structure 12 away from the bottom of the barrel, and the plurality of fins 22 are divided into a plurality of fin groups 22a distributed along the circumferential direction of the barrel structure 12. The sheet group 22a includes a plurality of fins 22 distributed at intervals along the axial direction of the barrel structure 12, and the extending direction of the fins 22 is consistent with the circumferential direction of the barrel structure 12; the fin group 22a is arranged correspondingly to the heat pipe 21, and each fin Each of the fins 22 has a through hole through which the heat pipe 21 penetrates, so that the heat pipe 21 passes through the corresponding fin group 22 a in the axial direction of the barrel structure 12 . In this way, the heat dissipation area of the condensation section of the heat pipe 21 can be increased to improve the heat dissipation efficiency of the hydraulic oil tank 10 provided in this embodiment.

It should be noted that the fins 22 are generally metal sheets with strong thermal conductivity. In this embodiment, the fins 22 are in the shape of a ring sector, and the fins 22 have a third circular hole 221 through which the heat supply pipe 21 passes. 21 is fixedly connected to the side wall of the third circular hole 221, for example, by welding or expansion tube connection. Here, the material and shape of the fin 22 and the connection method between the heat pipe 21 and the fin 22 are not specifically limited.

Further, the number of groups of the above-mentioned fin groups 22a, the number of fins 22 included in each group of fin groups 22a and the number of heat pipes 21 are all determined according to the heat dissipation power required in actual use, etc., and will not be discussed here. limit.

Please refer to Fig. 1, Fig. 6 and Fig. 7, Fig. 6 is a schematic perspective view of another partial structure of the hydraulic oil tank provided by the embodiment of the present disclosure, and Fig. 7 is a three-dimensional structure of the air guide structure in the hydraulic oil tank provided by the embodiment of the present disclosure schematic diagram. As shown in Fig. 1, Fig. 6 and Fig. 7, in order to further improve the heat dissipation effect of the hydraulic oil tank 10 provided in this embodiment, in this embodiment, the heat dissipation assembly 2 also includes a fan structure 23 and an air guiding structure 24, and the fan structure 23 The barrel structure 12 is distributed on both sides of a plurality of fins 22 relative to the axial direction of the barrel structure 12; the fan structure 23 includes a fan 231 and a fan housing 232 that is arranged outside the fan 231; the wind guide structure 24 includes a frame body 241 and a plurality of wind deflectors 242, the frame body 241 includes a first annular frame body 2411 and a second annular frame body 2412, the first annular frame body 2411 and the second annular frame body 2412, the fan 231 and the fan casing 232 are all connected with The barrel structure 12 is coaxially arranged, and a plurality of wind deflectors 242 are connected between the first annular frame body 2411 and the second annular frame body 2412, and the plurality of air deflectors 242 are distributed along the circumferential direction of the frame body 241 at intervals. The wind plate 242 is located between two adjacent fin groups 22a, and the first annular frame body 2411, the second annular frame body 2412 and the wind deflector 242 are integrally formed, for example, the wind deflector 242 and the first annular frame body 2411 are connected by welding, and the air deflector 242 is connected with the second annular frame body 2412 by welding. Here, the first annular frame body 2411, the second annular frame body 2412 and the air deflector 242 There is no specific limitation on the connection mode between them.

Wherein, the first ring frame body 2411 is located on the side of the second ring frame body 2412 facing the barrel structure 12, and the first ring frame body 2411 is detachably connected to the end cover 1232, specifically, the end cover 1232 faces the first ring One end of the frame body 2411 is provided with a plurality of first connecting protrusions 1238 spaced along the circumferential direction of the end cover 1232, and a plurality of spaced first connection holes 2413 are opened on the circumferential direction of the first annular frame body 2411. The axial direction of the connection hole 2413 is consistent with the radial direction of the first ring frame body 2411, and the first ring frame body 2411 is sleeved on the outer circumference of a plurality of first connection protrusions 1238, and the first connection protrusions 1238 are provided with the first connection The hole 2413 corresponds to the second connecting hole 1239 , and the threaded fasteners pass through the first connecting hole 2413 and the second connecting hole 1239 in turn to detachably connect the air guide structure 24 to the barrel structure 12 .

Further, the end of the second annular frame body 2412 facing the fan structure 23 has a plurality of second connecting protrusions 2414 distributed along the circumferential direction of the second annular frame body 2412 at intervals, and the fan casing 232 is sleeved on the plurality of second connecting protrusions 2414 . On the outer periphery of the connection protrusion 2414, the fan housing 232 is provided with a plurality of third connection holes 2321 distributed along the circumferential direction of the fan housing 232 at intervals, and the second connection protrusion 2414 is provided with holes corresponding to the third connection holes 2321. In the fourth connection hole 2415, threaded fasteners pass through the third connection hole 2321 and the fourth connection hole 2415 in order to detachably connect the air guide structure 24 to the fan casing 232; further, the fan 231 can also be detachably connected to the The second annular frame body 2412, here, the connection mode between the fan 231 and the second annular frame body 2412 needs to be determined according to the model and actual structure of the fan 231, which will not be repeated here.

It should be noted that, in the above-mentioned embodiment, the second connection hole 1239 can be provided on each first connection protrusion 1238, or the second connection hole 1239 can be provided on some of the first connection protrusions 1238, such as interval The way of setting; the second connecting protrusion 2414 can also be set in this way, which will not be repeated here.

In this embodiment, by setting the fan structure 23 and the wind guide structure 24, after the fan 231 is started, the fin group 22a between the two wind guide plates 242 forms an air inlet, and the air flows from the surroundings to the central negative pressure area. , and under the guidance of the air deflector 242 all pass through the fins 22, not only the heat on the fins 22 can be dissipated in time, but also the waste of the air volume of the fan 231 can be avoided.

It should be noted that, in some embodiments, when the number of heat pipes 21 is large, the fins 22 can be designed as an annular disc shape. At this time, there is no need to set the air guide plate 242. This method will not be introduced in detail.

Please refer to FIG. 3 and FIG. 8 . FIG. 8 is a schematic perspective view of another partial structure of the hydraulic oil tank provided by an embodiment of the present disclosure. As shown in Figure 3 and Figure 8, in order to make the air sucked in by the fan 231 flow in a relatively compact space and improve the heat dissipation effect on the fins 22, in this embodiment, the heat dissipation assembly 2 also includes a partition 25 , in the axial direction of the barrel structure 12, the partition 25 is located between the barrel structure 12 and the plurality of fins 22, the partition 25 has a fourth circular hole 251 through which the heat supply pipe 21 passes, and the partition 25 The fixed connection to the plurality of first connection protrusions 1238 is, for example, a welding connection method. Here, the connection method between the partition plate 25 and the first connection protrusions 1238 is not limited.

Specifically, when the heat on the evaporating section of the heat pipe 21 is transferred to the condensing section, the fan 231 is started. At this time, the air flow will pass through the fins 22 to dissipate the heat on the heat pipe 21 and the fins 22, so that the present embodiment The heat dissipation effect of the provided hydraulic oil tank 10 is better.

The hydraulic oil tank provided in this embodiment includes an oil storage assembly and a heat dissipation assembly. The oil storage assembly includes an oil inlet pipe, a barrel structure and an oil outlet pipe. The barrel structure has a closed annular cavity. The oil pipeline and the barrel structure, the oil outlet pipe is used to connect the oil supply pipeline of the hydraulic system and the annular cavity, and the inner peripheral wall of the annular cavity is provided with a deflector that spirally rises along the inner peripheral wall of the annular cavity; the heat dissipation component includes a plurality of heat pipes , a plurality of heat pipes are distributed along the circumferential direction of the annular cavity at intervals, the extension direction of the heat pipes is consistent with the axial direction of the barrel structure, one end of the heat pipes is connected to the bottom wall of the annular cavity, and the other end of the heat pipes extends to the barrel through the deflector outside the structure. In this way, the oil entering the barrel structure will flow along the spiral deflector. During the process of scouring the heat pipe, the heat of the oil itself will be transferred to the heat pipe. The state is transmitted to the other end of the heat pipe to transfer the heat to the outside of the barrel structure to complete the cooling and heat dissipation of the hydraulic oil. The hydraulic oil tank provided by this embodiment has a good cooling effect.

This embodiment also provides a hydraulic system, including an oil supply pipeline, an oil return pipeline and the hydraulic oil tank 10 of the above embodiment, the oil in the oil return pipeline can flow into the oil inlet pipe 11, and the oil in the oil outlet pipe 13 can flow into Oil supply line.

It should be noted that, in the above embodiments, the specific structure and operating principle of the hydraulic oil tank 10 have been introduced in detail, and will not be repeated here.

Further, the hydraulic system provided in this embodiment should also include other components that enable the hydraulic system to work normally, and the other components in the hydraulic system will not be introduced one by one here.

The hydraulic system provided in this embodiment includes a hydraulic oil tank. The hydraulic oil tank includes an oil storage assembly and a cooling assembly. The oil storage assembly includes an oil inlet pipe, a barrel structure and an oil outlet pipe. The barrel structure has a closed annular cavity for the oil inlet pipe. For connecting the oil return pipeline of the hydraulic system and the barrel structure, the oil outlet pipe is used to connect the oil supply pipeline of the hydraulic system and the annular cavity, and the inner peripheral wall of the annular cavity is provided with a deflector that spirals up along the inner peripheral wall of the annular cavity; The heat dissipation assembly includes a plurality of heat pipes, which are distributed at intervals along the circumferential direction of the annular cavity. The extension direction of the heat pipes is consistent with the axial direction of the barrel structure. The flow plate extends outside the barrel structure. In this way, the oil entering the barrel structure will flow along the spiral deflector. During the process of scouring the heat pipe, the heat of the oil itself will be transferred to the heat pipe. The state is transmitted to the other end of the heat pipe to transfer the heat to the outside of the barrel structure to complete the cooling and heat dissipation of the hydraulic oil. Among them, the heat dissipation effect of the hydraulic oil tank is good, so that the hydraulic system provided by this embodiment has strong stability.

It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these No such actual relationship or order exists between entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above descriptions are only specific implementation manners of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (3)

1. A hydraulic oil tank (10), characterized in that it comprises an oil storage assembly (1) and a cooling assembly (2), and the oil storage assembly (1) includes an oil inlet pipe (11), a barrel structure (12 ) and an oil outlet pipe (13), the barrel structure (12) has a closed annular chamber (121), and the oil outlet pipe (13) is used to communicate with the oil supply pipeline of the hydraulic system and the annular chamber (121 ), the inner peripheral wall of the annular cavity (121) is provided with a deflector (122) spirally rising along the inner peripheral wall of the annular cavity (121); The heat dissipation assembly (2) includes a plurality of heat pipes (21), and the plurality of heat pipes (21) are distributed at intervals along the circumferential direction of the annular cavity (121), and the extension direction of the heat pipes (21) is in line with that of the bucket. The axial direction of the body structure (12) is consistent, one end of the heat pipe (21) is connected to the bottom wall of the annular cavity (121), and the other end of the heat pipe (21) passes through the deflector (122) extending outside the barrel structure (12); The barrel structure (12) includes an inner barrel (123) and an outer barrel (124) that communicate with each other, the outer barrel (124) is coaxially sleeved outside the inner barrel (123), and the outer barrel (124) is coaxially sleeved outside the inner barrel (123). The annular cavity (121) is formed between the barrel (124) and the inner barrel (123), and the outer side wall of the inner barrel (123) forms the inner peripheral wall of the annular cavity (121), and the outer The inner wall of the barrel body (124) forms the outer peripheral wall of the annular cavity (121), and the part structure of the inner bottom wall of the outer barrel body (124) forms the bottom wall of the annular cavity (121); The side wall of (123) is provided with a conduction gap (1237), and the conduction gap (1237) runs through the side wall of the inner barrel (123) in the radial direction of the inner barrel (123). The through notch (1237) communicates with the inner cavity of the inner barrel (123) and the annular cavity (121); the conduction notch (1237) is located on the side wall of the inner barrel (123) close to the inner barrel One side of the barrel bottom of (123); The barrel structure (12) also includes a filter element (125), the filter element (125) is arranged in the inner cavity of the inner barrel body (123), so that the filter element (125) and the inner barrel A cavity (126) is formed between the bodies (123), and the oil inlet pipe (11) is used to connect the oil return line of the hydraulic system with the filter element (125); the filter element (125) is provided with a plurality of An oil leakage hole (1255), the oil leakage hole (1255) communicates with the inner cavity of the filter element (125) and the cavity (126); the heat dissipation assembly (2) also includes a plurality of fins (22 ), a plurality of fins (22) are arranged on one side of the barrel structure (12) along the axial direction of the barrel structure (12), and a plurality of fins (22) are divided into a plurality of The fin group (22a) distributed at intervals in the circumferential direction of the barrel structure (12), the fin group (22a) includes a plurality of fins (22) distributed at intervals along the axial direction of the barrel structure (12) ), the extension direction of the fins (22) is consistent with the circumferential direction of the barrel structure (12); (22) have through holes for the heat pipes (21) to pass through, so that the heat pipes (21) pass through the corresponding fin groups (22a) in the axial direction of the barrel structure (12) The heat dissipation assembly (2) also includes a fan structure (23) and an air guide structure (24), and the fan structure (23) and the barrel structure (12) are along the axis of the barrel structure (12) Distributed relatively to both sides of a plurality of said fins (22); one end of said air guide structure (24) is detachably connected to said barrel structure (12), and the other end of said air guide structure (24) One end is detachably connected to the fan structure (23), the wind guide structure (24) includes a plurality of wind guide plates (242) distributed at intervals along the circumference of the barrel structure (12), the wind guide The plate (242) is located between two adjacent fin groups (22a); the heat dissipation assembly (2) also includes a partition (25), on the axial direction of the barrel structure (12), The partition (25) is located between the barrel structure (12) and the plurality of fins (22). 2. The hydraulic oil tank (10) according to claim 1, characterized in that, the deflector (122) is in close contact with the inner peripheral wall and the outer peripheral wall of the annular cavity (121). 3. A hydraulic system, characterized in that it comprises the hydraulic oil tank (10) according to claim 1 or 2.

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