阅读说明：本技术 液压余热处理系统及作业机械 (Hydraulic waste heat treatment system and operation machine ) 是由 陈栩 石晋 张金虎 于 2021-07-29 设计创作，主要内容包括：本发明提供一种液压余热处理系统及作业机械,其中,液压余热处理系统包括液压系统、储能装置热管理系统和余热利用系统,所述液压系统包括散热器,所述储能装置热管理系统包括加热装置,所述余热利用系统包括第一换热器,所述第一换热器的第一换热侧通过第一阀门与所述散热器并联,所述第一换热器的第二换热侧通过第二阀门与所述加热装置并联。本发明提供的液压余热处理系统及作业机械,能够将液压系统中的余热交换至储能装置热管理系统对储能装置进行加热,保证其正常使用,实现液压余热的充分利用,有利于增强液压系统的散热效果,并且能够根据液压系统的散热需求和储能装置的加热需求进行灵活调节。(The invention provides a hydraulic waste heat treatment system and an operation machine, wherein the hydraulic waste heat treatment system comprises a hydraulic system, an energy storage device heat management system and a waste heat utilization system, the hydraulic system comprises a radiator, the energy storage device heat management system comprises a heating device, the waste heat utilization system comprises a first heat exchanger, a first heat exchange side of the first heat exchanger is connected with the radiator in parallel through a first valve, and a second heat exchange side of the first heat exchanger is connected with the heating device in parallel through a second valve. The hydraulic waste heat treatment system and the operation machine provided by the invention can exchange waste heat in the hydraulic system to the energy storage device heat management system to heat the energy storage device, ensure the normal use of the energy storage device, realize the full utilization of the hydraulic waste heat, are beneficial to enhancing the heat dissipation effect of the hydraulic system, and can be flexibly adjusted according to the heat dissipation requirement of the hydraulic system and the heating requirement of the energy storage device.)

1. The utility model provides a hydraulic pressure waste heat treatment system, its characterized in that includes hydraulic system, energy memory thermal management system and waste heat utilization system, hydraulic system includes the radiator, energy memory thermal management system includes heating device, waste heat utilization system includes first heat exchanger, the first heat transfer side of first heat exchanger through first valve with the radiator is parallelly connected, the second heat transfer side of first heat exchanger through the second valve with heating device is parallelly connected.

2. The hydraulic waste heat treatment system of claim 1, further comprising a hydraulic oil pump, a hydraulic oil tank, and a hydraulic load, wherein the hydraulic oil tank, the hydraulic oil pump, the hydraulic load, and the radiator are connected in series in sequence; the outlet end of the hydraulic load is respectively connected with the inlet end of the radiator and the inlet end of the first heat exchange side of the first heat exchanger through the first valve; and the inlet end of the hydraulic oil tank is respectively connected with the outlet end of the radiator and the outlet end of the first heat exchange side of the first heat exchanger.

3. The hydraulic waste heat treatment system of claim 1, wherein the energy storage device thermal management system further comprises an energy storage device and a first pump body, and the heating device is connected in series with the energy storage device and the first pump body; the outlet end of the second heat exchange side of the first heat exchanger and the outlet end of the heating device are respectively connected with the inlet end of the first pump body through the second valve, the outlet end of the first pump body is connected with the inlet end of the energy storage device, and the outlet end of the energy storage device is respectively communicated with the inlet end of the second heat exchange side of the first heat exchanger and the inlet end of the heating device.

4. The hydraulic waste heat treatment system of claim 1, wherein an inlet end and an outlet end of the energy storage device are provided with temperature sensors, respectively.

5. The hydraulic waste heat treatment system according to claim 1, further comprising a cooling heat exchange loop, wherein the cooling heat exchange loop comprises a second heat exchanger, a compressor, a condenser and an expansion valve, a first heat exchange side of the second heat exchanger is connected in series with the compressor, the condenser and the expansion valve, and a second heat exchange side of the second heat exchanger is connected in series with the heating device.

6. The hydraulic waste heat treatment system according to claim 1, wherein a second pump body is arranged on a connecting pipeline between the second heat exchange side of the first heat exchanger and the second valve.

7. The hydraulic waste heat treatment system of claim 1, wherein the first valve and the second valve are three-way solenoid valves.

8. The hydraulic waste heat treatment system of claim 1, wherein the first heat exchanger is a tube heat exchanger, a plate heat exchanger, or an immersed serpentine tube heat exchanger.

9. The hydraulic waste heat treatment system according to claim 1, wherein deionized water, organic antifreeze or inorganic antifreeze is used as a heat exchange medium in the energy storage device heat management system.

10. A working machine, characterized by comprising a hydraulic waste heat treatment system according to any one of claims 1-9.

Technical Field

The invention relates to the technical field of equipment cooling, in particular to a hydraulic waste heat treatment system and an operating machine.

Background

The hydraulic system is generally used in the engineering machinery industry to supply energy to the working system, the hydraulic system generates more heat in the process of supplying energy to the working system, and the heat of the part is dissipated by using the radiator to ensure the normal work of the hydraulic system. The heat generated by the hydraulic oil can not be recovered, and the heat dissipation effect is poor in the extremely high-temperature environment.

In the prior art, a hydraulic system exchanges heat with a user heating device by using a heat exchanger, waste heat of hydraulic oil is transferred to a heat carrying medium of the heating device, and the heat carrying medium releases heat at the heating device to heat a user.

When an energy storage device needs to heat in the system, the energy storage device heating system needs to be started to heat, hydraulic waste heat cannot be fully utilized, and meanwhile, the heat dissipation effect of the hydraulic oil heat dissipation system is poor when a user heating device is not needed to heat in high-temperature weather.

Disclosure of Invention

The invention provides a hydraulic waste heat treatment system and an operating machine, which are used for solving the problem that hydraulic waste heat cannot be fully utilized in the prior art.

The invention provides a hydraulic waste heat treatment system which comprises a hydraulic system, an energy storage device heat management system and a waste heat utilization system, wherein the hydraulic system comprises a radiator, the energy storage device heat management system comprises a heating device, the waste heat utilization system comprises a first heat exchanger, a first heat exchange side of the first heat exchanger is connected with the radiator in parallel through a first valve, and a second heat exchange side of the first heat exchanger is connected with the heating device in parallel through a second valve.

According to the hydraulic waste heat treatment system provided by the invention, the hydraulic system further comprises a hydraulic oil pump, a hydraulic oil tank and a hydraulic load, wherein the hydraulic oil tank, the hydraulic oil pump, the hydraulic load and the radiator are sequentially connected in series; the outlet end of the hydraulic load is respectively connected with the inlet end of the radiator and the inlet end of the first heat exchange side of the first heat exchanger through the first valve; and the inlet end of the hydraulic oil tank is respectively connected with the outlet end of the radiator and the outlet end of the first heat exchange side of the first heat exchanger.

According to the hydraulic waste heat treatment system provided by the invention, the energy storage device heat management system further comprises an energy storage device and a first pump body, wherein the heating device is connected with the energy storage device and the first pump body in series; the outlet end of the second heat exchange side of the first heat exchanger and the outlet end of the heating device are respectively connected with the inlet end of the first pump body through the second valve, the outlet end of the first pump body is connected with the inlet end of the energy storage device, and the outlet end of the energy storage device is respectively communicated with the inlet end of the second heat exchange side of the first heat exchanger and the inlet end of the heating device.

According to the hydraulic waste heat treatment system provided by the invention, the inlet end and the outlet end of the energy storage device are respectively provided with a temperature sensor.

The hydraulic waste heat treatment system further comprises a cooling heat exchange loop, wherein the cooling heat exchange loop comprises a second heat exchanger, a compressor, a condenser and an expansion valve, a first heat exchange side of the second heat exchanger is connected with the compressor, the condenser and the expansion valve in series, and a second heat exchange side of the second heat exchanger is connected with the heating device in series.

According to the hydraulic waste heat treatment system provided by the invention, a second pump body is arranged on a connecting pipeline between the second heat exchange side of the first heat exchanger and the second valve.

According to the hydraulic waste heat treatment system provided by the invention, the first valve and the second valve are electromagnetic three-way valves.

According to the hydraulic waste heat treatment system provided by the invention, the first heat exchanger is a tubular heat exchanger, a plate heat exchanger or an immersed coil type heat exchanger.

According to the hydraulic waste heat treatment system provided by the invention, deionized water, organic anti-freezing solution or inorganic anti-freezing solution is used as a heat exchange medium in the heat management system of the energy storage device.

The invention also provides a working machine comprising the hydraulic waste heat treatment system.

According to the hydraulic waste heat treatment system and the operation machine, waste heat in the hydraulic system can be exchanged to the energy storage device heat management system through the first heat exchanger to heat the energy storage device, normal use of the energy storage device is guaranteed, full utilization of the hydraulic waste heat is achieved, and the heat dissipation effect of the hydraulic system is enhanced. The setting of first valve can adjust the switching and the flow of return circuit between the first heat exchange side of first heat exchanger and the hydraulic system, and the setting of second valve can adjust the switching and the flow of return circuit between the second heat exchange side of first heat exchanger and the energy memory thermal management system to can carry out nimble regulation according to energy memory's heating demand.

Furthermore, the hydraulic waste heat treatment system also comprises a cooling heat exchange loop, and the cooling heat exchange loop of the energy storage device heat management system can be used for cooling the hydraulic system in high-temperature weather, so that the heat dissipation effect of the hydraulic system is further enhanced; the setting of first valve can adjust the switching and the flow of return circuit between the first heat exchange side of first heat exchanger and the hydraulic system, and the setting of second valve can adjust the switching and the flow of return circuit between the second heat exchange side of first heat exchanger and the energy memory thermal management system to can carry out nimble regulation according to hydraulic system's heat dissipation demand. And, the cooling heat transfer circuit still can be used to carry out energy memory's cooling. When the ambient temperature is high and the heat dissipation capacity of the hydraulic system is not enough to meet the heat dissipation requirement of the hydraulic system, a cooling heat exchange loop in the heat management system of the energy storage device is opened, the cooling heat exchange loop cools a heat exchange medium through a second heat exchanger, a pipeline flowing to the energy storage device is closed by controlling a second valve, a loop between a second heat exchange side of a first heat exchanger and a first heat exchange side of the second heat exchanger is opened, the low-temperature heat exchange medium is conveyed to the first heat exchanger, the heat of hydraulic oil is transferred to the heat exchange medium through the first heat exchanger, and then the heat exchange medium is circulated to the second heat exchanger for cooling.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of an overall structure of a hydraulic waste heat treatment system provided by the present invention;

reference numerals:

100. a hydraulic system; 110. A hydraulic oil pump; 120. A hydraulic oil tank;

130. a hydraulic load; 140. A heat sink; 150. A first valve;

200. energy storage device thermal management 210, an energy storage device; 220. A first pump body;

a system;

230. a heating device; 240. A second valve; 250. A temperature sensor;

260. an expansion kettle; 270. A second pump body; 300. A waste heat utilization system;

310. a first heat exchanger; 400. A cooling heat exchange loop; 410. A second heat exchanger;

420. a compressor; 430. A condenser; 440. An expansion valve.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The hydraulic waste heat treatment system according to the embodiment of the present invention is described below with reference to fig. 1, and includes a hydraulic system 100, an energy storage device thermal management system 200, and a waste heat utilization system 300. Wherein waste heat utilization system 300 can exchange the heat in hydraulic system 100 to energy memory thermal management system 200 through the mode of heat exchange, heats energy memory thermal management system 200, guarantees that energy memory thermal management system 200 can normal operating under low temperature environment, can strengthen hydraulic system 100's radiating effect simultaneously, realizes the make full use of hydraulic pressure waste heat.

The hydraulic system 100 includes a radiator 140, the radiator 140 is a heat dissipation component in the hydraulic system 100, and when hydraulic oil in the hydraulic system 100 passes through the radiator 140, a part of heat can be dissipated through the radiator 140, so as to reduce the temperature of the hydraulic oil in the hydraulic system 100. Energy storage device thermal management system 200 includes heating device 230, and heating device 230 forms a heating loop with other components in energy storage device thermal management system 200, and heating device 230 heats the heat transfer medium in the heating loop, and the heat transfer medium is exothermic in the part position that needs to heat in energy storage device thermal management system 200, adjusts the temperature of the part that needs to heat.

The waste heat utilization system 300 comprises a first heat exchanger 310, and the first heat exchanger 310 is a tube heat exchanger, a plate heat exchanger or an immersed coil heat exchanger. The first heat exchange side of the first heat exchanger 310 is connected in parallel with the radiator 140 through the first valve 150, and the flow path of the hydraulic oil in the hydraulic system 100 can be changed through the first valve 150, so that part or all of the hydraulic oil can flow through the first heat exchange side of the first heat exchanger 310 to perform heat exchange, the temperature of the hydraulic oil is reduced, and the radiator 140 is assisted to perform cooling of the hydraulic oil. The second heat exchange side of the first heat exchanger 310 is connected in parallel with the heating device 230 through the second valve 240, and the flow direction of a heat exchange medium in the energy storage device thermal management system 200 can be changed through the second valve 240, so that part or all of the heat exchange medium can pass through the second heat exchange side of the first heat exchanger 310, and heat of hydraulic oil in the first heat exchange side of the first heat exchanger 310 is exchanged to the heat exchange medium, so that the temperature of a heating part required in the energy storage device thermal management system 200 is increased.

In some embodiments of the present invention, the hydraulic system 100 further includes a hydraulic oil pump 110, a hydraulic oil tank 120, and a hydraulic load 130, and the hydraulic oil tank 120, the hydraulic oil pump 110, the hydraulic load 130, and the radiator 140 are connected in series. The outlet end of the hydraulic load 130 is connected to the inlet end of the radiator 140 and the inlet end of the first heat exchange side of the first heat exchanger 310 through the first valve 150; the inlet end of the hydraulic oil tank 120 is connected to the outlet end of the radiator 140 and the outlet end of the first heat exchange side of the first heat exchanger 310, respectively. The hydraulic oil pump 110 is capable of pumping oil within the hydraulic oil tank 120 to the hydraulic load 130 to power the work system. The hydraulic oil flowing out from the hydraulic load 130 can enter the radiator 140 to dissipate heat, so as to prevent the hydraulic oil from being heated too high, and the hydraulic oil dissipated by the radiator 140 can flow back to the hydraulic oil tank 120. The flow direction of the hydraulic oil flowing out of the hydraulic load 130 can be adjusted by the first valve 150, part or all of the hydraulic oil flowing out of the hydraulic load 130 is guided into the first heat exchanger 310 for heat exchange according to the heat dissipation requirement, and the hydraulic oil subjected to heat exchange by the first heat exchanger 310 flows back to the hydraulic oil tank 120.

In some embodiments of the present invention, the energy storage device thermal management system 200 further includes an energy storage device 210 and a first pump body 220. The energy storage device 210 may be a battery pack. The heating device 230 is connected in series with the energy storage device 210 and the first pump body 220, the outlet end of the second heat exchange side of the first heat exchanger 310 and the outlet end of the heating device 230 are respectively connected with the inlet end of the first pump body 220 through a second valve 240, the outlet end of the first pump body 220 is connected with the inlet end of the energy storage device 210, and the outlet end of the energy storage device 210 is respectively communicated with the inlet end of the second heat exchange side of the first heat exchanger 310 and the inlet end of the heating device 230. When the first pump body 220 operates, power is provided for the flowing of the heat exchange medium, so that the heat exchange medium can flow to the heating device 230 to be heated and stored, the heated heat exchange medium releases heat at the position of the energy storage device 210, and the energy storage device 210 can normally operate in a low-temperature environment. Deionized water, organic antifreeze, or inorganic antifreeze can be used as a heat exchange medium in the energy storage device thermal management system 200.

Optionally, the inlet end and the outlet end of the energy storage device 210 are respectively provided with a temperature sensor 250, the temperature sensor 250 can be used for mastering the heat exchange condition of the heat exchange medium at the position of the energy storage device 210, and meanwhile, the working temperature of the energy storage device 210 can be reflected, so that data support is provided for the control of the heating device 230, the first valve 150 and the second valve 240.

Optionally, the energy storage device thermal management system 200 further comprises an expansion tank 260, which functions to maintain the pressure and supplement the heat exchange medium.

In some embodiments of the present invention, the hydraulic waste heat treatment system further comprises a cooling heat exchange circuit 400, and the cooling heat exchange circuit 400 comprises a second heat exchanger 410, a compressor 420, a condenser 430 and an expansion valve 440. A first heat exchange side of the second heat exchanger 410 is connected in series with the compressor 420, the condenser 430, and the expansion valve 440, and a second heat exchange side of the second heat exchanger 410 is connected in series with the heating device 230. The outlet end of the energy storage device 210 passes through the second heat exchange side of the second heat exchanger 410 and then passes through the inlet end of the heating device 230, that is, the heat exchange medium flowing out of the outlet end of the energy storage device 210 can flow into the heating device 230 after exchanging heat on the second heat exchange side of the second heat exchanger 410. The cooling heat exchange loop 400 cools the heat exchange medium in the energy storage device heat management system 200 through the second heat exchanger 410, and then cools at least one of the energy storage device 210 and the hydraulic system 100, so that the energy storage device 210 and the hydraulic system 100 can be ensured to work at a proper temperature in a high-temperature weather.

Optionally, a second pump body 270 is disposed on a connection pipeline between the second heat exchanging side of the first heat exchanger 310 and the second valve 240. The second pump 270 can provide power for the flow of the heat exchange medium, for example, when the energy storage device 210 does not need to be heated or cooled, and only needs to be cooled to the hydraulic system 100, the second valve 240 can close the pipelines of the first pump 220 and the energy storage device 210, so that the heat exchange medium does not flow through the first pump 220 and the energy storage device 210, and the second pump 270 can be operated to drive the heat exchange medium to circularly flow on the loop formed by the first heat exchanger 310 and the second heat exchanger 410. When the ambient temperature is high and the heat dissipation capacity of the hydraulic system 100 is not enough to meet the heat dissipation requirement of the hydraulic system 100, the cooling heat exchange loop 400 of the energy storage device thermal management system 200 is opened, the cooling heat exchange loop 400 cools the heat exchange medium through the second heat exchanger 410, the pipeline flowing to the energy storage device 210 is closed by controlling the second valve 240, the loop between the second heat exchange side of the first heat exchanger 310 and the first heat exchange side of the second heat exchanger 410 is opened, the second pump body 270 is opened to convey the low-temperature heat exchange medium to the first heat exchanger 310, the heat of the hydraulic oil is transferred to the heat exchange medium through the first heat exchanger 310, and then the heat exchange medium is circulated to the second heat exchanger 410 to cool the hydraulic oil, so that the heat dissipation capacity of the whole hydraulic system 100 can be improved, and the temperature of the hydraulic oil is effectively reduced.

Optionally, the first valve 150 and the second valve 240 are three-way electromagnetic valves, which can conveniently control the flow direction of the hydraulic oil and the heat exchange medium, and thus flexibly control the heat exchange process.

In an embodiment of the invention, a working machine is further provided, which comprises the hydraulic waste heat treatment system. Through setting up hydraulic pressure waste heat treatment system not only can satisfy hydraulic system 100's in the operation machinery heat dissipation demand, can also heat for energy memory 210 in the operation machinery through utilizing the hydraulic pressure waste heat, realize the make full use of hydraulic pressure waste heat. Under high temperature weather, can also be through cooling heat exchange circuit 400 to hydraulic system 100 and energy memory 210, guarantee its normal work.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.