CN113027871A - Cooling system of hydraulic walking power station and hydraulic walking power station - Google Patents
Cooling system of hydraulic walking power station and hydraulic walking power station Download PDFInfo
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- CN113027871A CN113027871A CN202110478546.8A CN202110478546A CN113027871A CN 113027871 A CN113027871 A CN 113027871A CN 202110478546 A CN202110478546 A CN 202110478546A CN 113027871 A CN113027871 A CN 113027871A
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- oil
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- heat dissipation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/002—Electrical failure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/008—Valve failure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
Abstract
The invention discloses a cooling system of a hydraulic walking power station and the hydraulic walking power station, and belongs to the field of engineering machinery. The heat dissipation system comprises a main oil tank, a fan pump, an auxiliary pump, a fan motor, a fan, a radiator and an oil return filter, wherein the main oil tank, the fan pump, the fan motor, the radiator and the oil return filter are sequentially connected, and an oil outlet of the oil return filter is connected with the main oil tank; the fan is arranged at the output end of the fan motor and is driven to rotate by the fan motor; an oil suction port of the auxiliary pump is connected with the main oil tank, and an oil outlet of the auxiliary pump is connected with an oil inlet of the radiator, so that the auxiliary fan pump can dissipate heat. The hydraulic walking power station comprises the heat dissipation system provided by the invention. By utilizing the heat dissipation system, the hydraulic walking power station can perform efficient and reliable heat dissipation, so that the faults of an engine and a hydraulic system of the hydraulic walking power station due to heating are avoided.
Description
Technical Field
The invention belongs to the technical field of heat dissipation, and particularly relates to a heat dissipation system of a hydraulic walking power station and the hydraulic walking power station.
Background
Open-pit drillers are generally applied to blast hole drilling operation of open-pit mines, and the conventional open-pit drillers can be divided into two main categories according to power sources: electric drills driven by electric motors and diesel drills driven by diesel engines.
The electric drilling machine provides energy by means of high voltage over six kilovolts, and is very inconvenient to walk for a long distance because a high-voltage cable needs to be connected constantly when the electric drilling machine walks. When the engine or the hydraulic system of the diesel-driven drilling machine fails, the drilling machine cannot be transferred in time. The hydraulic walking power station is a special device which can provide additional power for an electric drilling machine or a diesel drilling machine, and when the drilling machine cannot move, the hydraulic walking power station can be used for driving the drilling machine to transfer to a site.
The hydraulic walking power station drives a hydraulic pump set by an engine to provide hydraulic power, and heating is inevitable when the engine and a hydraulic system work, so that the problem of heat dissipation is very important for the hydraulic walking power station. Because the working environment of the open-air drilling machine is severe, the reliability of a heat dissipation system is insufficient and the heat dissipation system cannot effectively dissipate heat probably due to the fault of a hydraulic pump of the heat dissipation system, so that the hydraulic system of the walking power station is in fault due to heating, and the design of the heat dissipation system of the hydraulic walking power station is very important.
Disclosure of Invention
The technical problem is as follows: aiming at the heat dissipation problem of the hydraulic walking power station, the invention provides a heat dissipation system of the hydraulic walking power station and the hydraulic walking power station comprising the heat dissipation system, so that an engine and the hydraulic system of the hydraulic walking power station can efficiently and reliably dissipate heat when the hydraulic walking power station works.
The technical scheme is as follows: on one hand, the invention provides a heat dissipation system of a hydraulic traveling power station, which comprises a main oil tank, a fan pump, an auxiliary pump, a fan motor, a fan, a radiator and an oil return filter, wherein the main oil tank, the fan pump, the fan motor, the radiator and the oil return filter are sequentially connected, and an oil outlet of the oil return filter is connected with the main oil tank; the fan is arranged at the output end of the fan motor and is driven to rotate by the fan motor; an oil suction port of the auxiliary pump is connected with the main oil tank, and an oil outlet of the auxiliary pump is connected with an oil inlet of the radiator, so that the auxiliary fan pump can dissipate heat.
Furthermore, a first reversing valve is arranged between an oil outlet of the auxiliary pump and an oil inlet of the radiator, and an external oil supply interface is arranged on the first reversing valve and can be used for supplying oil to the outside;
a second reversing valve is arranged between an oil suction port of the auxiliary pump and the main oil tank, and the second reversing valve is connected with an auxiliary oil tank;
when the heat dissipation system supplies oil to the outside, the states of the first reversing valve and the second reversing valve are switched, so that the auxiliary pump directly absorbs oil from the auxiliary oil tank, and the oil is supplied to the outside through an external oil supply interface on the first reversing valve.
Furthermore, the first reversing valve and the second reversing valve are two-position three-way hydraulic control reversing valves, and hydraulic power is provided for switching through pilot control oil sources connected to the first reversing valve and the second reversing valve.
Further, a first one-way valve is arranged on the fan motor in parallel.
Further, a second one-way valve is arranged on the radiator in parallel.
Further, an oil outlet of the auxiliary pump is provided with an overflow valve.
Further, a third one-way valve is arranged between the oil outlet of the auxiliary pump and the first reversing valve.
Furthermore, the fan pump is a variable pump, a proportional valve is arranged on the fan pump, and the output flow of the fan pump is controlled through the proportional valve, so that the rotating speed of the fan is adjusted.
Furthermore, the heat dissipation system also comprises a fan rotating speed control system, wherein the fan rotating speed control system comprises a hydraulic oil temperature sensor, an environment temperature sensor, an engine control module and a fan rotating speed controller;
the hydraulic oil temperature sensor is used for collecting the temperature of hydraulic oil and sending the temperature of the hydraulic oil to the fan rotating speed controller;
the environment temperature sensor is used for collecting the environment temperature and sending the environment temperature to the fan rotating speed controller;
the engine control module can acquire the rotating speed of the engine, the temperature of cooling water and the temperature of inlet air and send the acquired rotating speed of the engine, the temperature of the cooling water and the temperature of the inlet air to the fan rotating speed controller;
the fan speed controller can send PWM electric signals to the proportional valve according to the temperature of hydraulic oil, the ambient temperature, the engine speed, the temperature of cooling water and the temperature of inlet air, so that the output flow of the fan pump is controlled, and the fan speed is adjusted.
In another aspect, a hydraulic traveling power station is provided, which comprises the heat dissipation system of the hydraulic traveling power station.
Has the advantages that: compared with the prior art, the invention has the following advantages:
(1) when the heat dissipation system in the embodiment of the invention is used for dissipating heat of the hydraulic walking power station, the engine is started to drive the fan pump and the auxiliary pump to rotate, the fan pump outputs high-pressure oil to the fan motor, the fan motor drives the fan to rotate under the action of the high-pressure oil, and the output air volume is blown to the radiator, so that the heat dissipation function is realized. The low-pressure oil at the oil outlet of the fan motor enters the radiator, then enters the oil return filter and finally enters the main oil tank. Meanwhile, the hydraulic oil output by the auxiliary pump directly enters the radiator, and the hydraulic oil output by the fan pump are radiated together. And, carry out supplementary heat dissipation through the auxiliary pump, greatly improved cooling system's reliability to make cooling system high-efficient reliable heat dissipation at the during operation, can be suitable for abominable operating mode environment, and then carry out better protection to the engine and the hydraulic system of walking power station, prevent to lead to hydraulic pressure walking power station to damage because of generating heat.
(2) The cooling system provided by the embodiment of the invention can efficiently and reliably cool the engine and the hydraulic system on the hydraulic walking power station, and can be used as an emergency auxiliary hydraulic system. Therefore, the heat dissipation system in the embodiment of the invention has multiple functions and better practicability.
Drawings
FIG. 1 is a schematic diagram of a heat dissipation system of a hydraulic power walking station in an embodiment of the present invention;
FIG. 2 is a system diagram of a fan speed control system according to an embodiment of the present invention.
The figure shows that: 1. a main oil tank; 2. a fan pump; 3. an auxiliary pump; 4. a fan motor; 5. a fan; 6. a heat sink; 7. an oil return filter; 8. a first direction changing valve; 9. a second directional control valve; 10. an auxiliary oil tank; 11. a pilot controlled oil supply; 12. a first check valve; 13. a second one-way valve; 14. an overflow valve; 15. a third check valve; 16. a proportional valve; 17. a hydraulic oil temperature sensor; 18. an ambient temperature sensor; 19. an engine control module; 20. a fan speed controller; 21. an external oil supply interface.
Detailed Description
The invention is further described with reference to the following examples and the accompanying drawings. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Also, the terms "first", "second", etc. are for convenience of description only and are not to be construed as limiting in number, etc., and the term "connected" is defined broadly, and may mean "mechanically connected" as well as "electrically connected", etc.
Fig. 1 shows a schematic diagram of one embodiment of the heat dissipation system of the hydraulic walking power station of the present invention. As shown in fig. 1, the heat dissipation system includes a main oil tank 1, a fan pump 2, an auxiliary pump 3, a fan motor 4, a fan 5, a radiator 6, and an oil return filter 7, wherein the main oil tank 1, the fan pump 2, the fan motor 4, the radiator 6, and the oil return filter 7 are connected in sequence, and an oil outlet of the oil return filter 7 is connected to the main oil tank 1; the fan 5 is arranged at the output end of the fan motor 4, and the fan 5 is driven to rotate by the fan motor 4; an oil suction port of the auxiliary pump 3 is connected with the main oil tank 1, and an oil outlet of the auxiliary pump 3 is connected with an oil inlet of the radiator 6, so that the auxiliary fan pump 2 dissipates heat.
When the heat dissipation system in the embodiment of the invention is used for dissipating heat of the hydraulic walking power station, the engine is started to drive the fan pump 2 and the auxiliary pump 3 to rotate, the fan pump 2 outputs high-pressure oil to the fan motor, the fan motor 4 drives the fan to rotate under the action of the high-pressure oil, and the output air volume is blown to the radiator 6, so that the heat dissipation function is realized. The low-pressure oil at the oil outlet of the fan motor 4 enters the radiator 6, then enters the return oil filter 7 and finally enters the main oil tank 1. Meanwhile, the hydraulic oil output by the auxiliary pump 3 directly enters the radiator, and the hydraulic system is radiated together with the hydraulic oil output by the fan pump 2.
When the hydraulic walking power station provides power for the electric drilling machine, the working environment is severe, the fan pump 2 may be failed, when the fan pump 2 fails, the fan 5 rotates slowly or stops rotating, but the reliable heat dissipation of the engine and the hydraulic system is difficult to perform by independently relying on the fan pump 2, and by using the heat dissipation system in the embodiment of the invention, the efficient heat dissipation can still be kept because of the assistance of the auxiliary pump 3, so that the heat dissipation system still has strong heat dissipation capability. Therefore, the reliability of the heat dissipation system is greatly improved, the heat dissipation system is efficient and reliable, the heat dissipation system can be suitable for severe working conditions, the engine and the hydraulic system of the walking power station can be better protected, and the hydraulic walking power station is prevented from being damaged due to heating.
In the embodiment of the invention, a diesel engine is arranged on the walking power station and can be used for driving the fan pump 2 and the auxiliary pump 3 to work. Usually the fan pump 2 and the auxiliary pump 3 are mechanically connected, i.e. can be easily driven by one engine. And the auxiliary pump 3 adopts a fixed displacement pump, so that the reliability is high during working, and the reliability of the whole radiating system is improved.
In one embodiment of the present invention, a first direction valve 8 is disposed between an oil outlet of the auxiliary pump 3 and an oil inlet of the radiator 6, and an external oil supply interface 21 is disposed on the first direction valve 8 and is configured to supply oil to the outside. A second reversing valve 9 is arranged between the oil suction port of the auxiliary pump 3 and the main oil tank 1, and an auxiliary oil tank 10 is connected to the second reversing valve 9;
the first reversing valve 8 and the second reversing valve 9 can adopt two-position three-way hydraulic control reversing valves, pilot control oil sources 11 are connected to the first reversing valve 8 and the second reversing valve 9, and hydraulic power is provided through the pilot control oil sources 11 to control the first reversing valve 8 and the second reversing valve 9 to reverse.
When the heat dissipation system supplies oil to the outside, the states of the first reversing valve 8 and the second reversing valve 9 are switched, so that the auxiliary pump 3 directly sucks oil from the auxiliary oil tank 10, and the oil is supplied to the outside through the external oil supply interface 21 on the first reversing valve 8.
Therefore, in the embodiment of the present invention, the heat dissipation system can not only dissipate heat for the hydraulic system of the hydraulic traveling power station, but also, when the external hydraulic mechanism fails due to a fault of the hydraulic pump, the heat dissipation system of the present invention can be used as an emergency auxiliary hydraulic system, the external hydraulic system is directly connected to the external oil supply interface 21 of the first directional valve 8, then the first directional valve 8 and the second directional valve 9 are switched by the pilot control oil source 11, the auxiliary pump 3 directly sucks hydraulic oil from the auxiliary oil tank 10 to supply oil to the external hydraulic mechanism, and the heat dissipation of the heat dissipation system is not affected.
Further, in the embodiment of the present invention, the fan motor 4 is provided with the first check valve 12 in parallel. When the engine is stopped, the fan 5 cannot stop rotating immediately under the action of inertia, the fan 5 drives the fan motor 4 to continue rotating for a period of time, and the fan motor 4 is sucked empty because the oil inlet is not continuously filled with hydraulic oil. The first check valve 12 can supplement the hydraulic oil at the oil outlet of the fan motor 4 to the oil inlet of the fan motor 4, so that the fan motor 4 is prevented from being damaged due to air suction.
Further, in the embodiment of the present invention, the radiator 6 is provided with the second check valve 13 in parallel. When the resistance of the radiator 6 is increased to a certain degree due to the reasons of low temperature of the hydraulic oil, unsmooth internal channel of the radiator 6 and the like, the hydraulic oil directly enters the main oil tank 1 from the second check valve 13 without passing through the radiator 6, and the radiator 6 is prevented from being burst due to overhigh pressure.
In one embodiment of the invention, the oil outlet of the auxiliary pump 3 is provided with an overflow valve 14, which prevents the working pressure of the auxiliary pump 3 from exceeding the rated pressure, thereby protecting the high-pressure overflow. When the working pressure of the auxiliary pump 3 exceeds the rated pressure, high-pressure oil enters the main oil tank 1 through the overflow valve 14, so that the auxiliary pump 3 is protected.
Further, in an embodiment of the present invention, a third check valve 15 is disposed between the oil outlet of the auxiliary pump 3 and the first direction valve 8, so as to prevent the high-pressure oil from flowing back and impacting the auxiliary pump 3 to damage the same when the auxiliary pump 3 is in operation.
In the preferred embodiment of the present invention, the fan pump 2 is a variable displacement pump, and the fan pump 2 is provided with a proportional valve 16, and the output flow of the fan pump 2 is controlled by the proportional valve 16, so as to adjust the rotating speed of the fan 5, thereby applying different climatic environments when the hydraulic walking power station is applied.
To this end, in an embodiment of the present invention, the heat dissipation system further includes a fan rotation speed control system, which can automatically control the rotation speed of the fan. Specifically, as shown in fig. 2, the fan speed control system includes a hydraulic oil temperature sensor 17, an ambient temperature sensor 18, an engine control module 19, and a fan speed controller 20. The hydraulic oil temperature sensor 17 is configured to collect a temperature of hydraulic oil, and send the temperature of the hydraulic oil to the fan rotation speed controller 20; the ambient temperature sensor 18 is used for collecting ambient temperature and sending the ambient temperature to the fan speed controller 20; the engine control module 19 can collect the engine speed, the cooling water temperature, and the intake air temperature, and send the collected engine speed, cooling water temperature, and intake air temperature to the fan speed controller 20. The fan speed controller 20 can send a PWM electric signal to the proportional valve 16 according to the hydraulic oil temperature, the ambient temperature, the engine speed, the cooling water temperature, and the intake air temperature, thereby controlling the output flow rate of the fan pump 2 to adjust the speed of the fan 5.
Through the fan rotating speed control system, the heat dissipation system can be applied to different environments, particularly in cold weather, the fan pump 2 automatically reduces the output quantity of hydraulic oil, and therefore the rotating speed of the fan 5 is reduced. This reduces the amount of hydraulic oil that enters the radiator 6 and the return oil filter 7. This is too small for the entire hydraulic traveling power station to have the filtering capacity of the hydraulic system. At this time, the hydraulic oil output by the auxiliary pump 3 directly enters the radiator 6 and the oil return filter 7 from the oil outlet of the fan motor 4, so that the filtering capacity of the hydraulic oil in cold weather is ensured. Therefore, the heat dissipation system in the embodiment of the invention can reliably work in a severe environment.
In addition, the embodiment of the invention also provides a hydraulic walking power station which comprises the heat dissipation system provided by the embodiment of the invention, so that the hydraulic walking power station has high-efficiency and reliable heat dissipation performance and can provide walking power for an open-air drilling machine under severe working conditions.
Thus far, the present invention has been described in detail. Some details well known in the art have not been described in order to avoid obscuring the concepts of the present invention. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (10)
1. The heat dissipation system of the hydraulic traveling power station is characterized by comprising a main oil tank (1), a fan pump (2), an auxiliary pump (3), a fan motor (4), a fan (5), a radiator (6) and an oil return filter (7), wherein the main oil tank (1), the fan pump (2), the fan motor (4), the radiator (6) and the oil return filter (7) are sequentially connected, and an oil outlet of the oil return filter (7) is connected with the main oil tank (1); the fan (5) is arranged at the output end of the fan motor (4), and the fan (5) is driven to rotate by the fan motor (4); an oil suction port of the auxiliary pump (3) is connected with the main oil tank (1), and an oil outlet of the auxiliary pump (3) is connected with an oil inlet of the radiator (6), so that the auxiliary fan pump (2) dissipates heat.
2. The heat dissipation system according to claim 1, wherein a first reversing valve (8) is arranged between an oil outlet of the auxiliary pump (3) and an oil inlet of the radiator (6), and an external oil supply interface (21) is arranged on the first reversing valve (8) and can be used for supplying oil to the outside;
a second reversing valve (9) is arranged between an oil suction port of the auxiliary pump (3) and the main oil tank (1), and an auxiliary oil tank (10) is connected to the second reversing valve (9);
when the heat dissipation system supplies oil to the outside, the states of the first reversing valve (8) and the second reversing valve (9) are switched, so that the auxiliary pump (3) directly absorbs oil from the auxiliary oil tank (10), and the oil is supplied to the outside through an external oil supply interface (21) on the first reversing valve (8).
3. The heat dissipation system according to claim 2, wherein the first directional control valve (8) and the second directional control valve (9) are two-position three-way hydraulic control directional control valves, and hydraulic power is supplied to switch through a pilot control oil source (11) connected to the first directional control valve (8) and the second directional control valve (9).
4. The heat dissipation system according to claim 1, wherein a first check valve (12) is provided in parallel on the fan motor (4).
5. The heat dissipation system according to claim 1, wherein a second one-way valve (13) is arranged in parallel on the heat sink (6).
6. The heat dissipation system according to claim 1, characterized in that the oil outlet of the auxiliary pump (3) is provided with an overflow valve (14).
7. The heat dissipation system according to claim 1, characterized in that a third one-way valve (15) is arranged between the oil outlet of the auxiliary pump (3) and the first reversing valve (8).
8. The heat dissipation system according to any one of claims 1 to 7, wherein the fan pump (2) is a variable displacement pump, a proportional valve (16) is arranged on the fan pump (2), and the output flow of the fan pump (2) is controlled through the proportional valve (16) so as to adjust the rotation speed of the fan (5).
9. The heat dissipation system of claim 8, further comprising a fan speed control system comprising a hydraulic oil temperature sensor (17), an ambient temperature sensor (18), an engine control module (19), a fan speed controller (20);
the hydraulic oil temperature sensor (17) is used for collecting the temperature of hydraulic oil and sending the temperature of the hydraulic oil to the fan rotating speed controller (20);
the environment temperature sensor (18) is used for collecting the environment temperature and sending the environment temperature to the fan rotating speed controller (20);
the engine control module (19) can collect the engine speed, the cooling water temperature and the air inlet temperature and send the collected engine speed, the cooling water temperature and the air inlet temperature to the fan speed controller (20);
the fan speed controller (20) can send PWM electric signals to the proportional valve (16) according to the temperature of hydraulic oil, the ambient temperature, the rotating speed of the engine, the temperature of cooling water and the temperature of inlet air, thereby controlling the output flow of the fan pump (2) and adjusting the rotating speed of the fan (5).
10. A hydraulic walking power station characterized by comprising the heat dissipation system of the hydraulic walking power station according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110478546.8A CN113027871A (en) | 2021-04-30 | 2021-04-30 | Cooling system of hydraulic walking power station and hydraulic walking power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110478546.8A CN113027871A (en) | 2021-04-30 | 2021-04-30 | Cooling system of hydraulic walking power station and hydraulic walking power station |
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| Publication Number | Publication Date |
|---|---|
| CN113027871A true CN113027871A (en) | 2021-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110478546.8A Pending CN113027871A (en) | 2021-04-30 | 2021-04-30 | Cooling system of hydraulic walking power station and hydraulic walking power station |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653683A (en) * | 2021-08-10 | 2021-11-16 | 芜湖造船厂有限公司 | Hydraulic system of amphibious vehicle |
| CN114087243A (en) * | 2021-11-12 | 2022-02-25 | 杭州中车车辆有限公司 | Straddle type monorail engineering vehicle and hydraulic system |
| WO2023005732A1 (en) * | 2021-07-28 | 2023-02-02 | 安百拓（南京）建筑矿山设备有限公司 | Power system and travelling power station |
-
2021
- 2021-04-30 CN CN202110478546.8A patent/CN113027871A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023005732A1 (en) * | 2021-07-28 | 2023-02-02 | 安百拓（南京）建筑矿山设备有限公司 | Power system and travelling power station |
| CN113653683A (en) * | 2021-08-10 | 2021-11-16 | 芜湖造船厂有限公司 | Hydraulic system of amphibious vehicle |
| CN114087243A (en) * | 2021-11-12 | 2022-02-25 | 杭州中车车辆有限公司 | Straddle type monorail engineering vehicle and hydraulic system |
| CN114087243B (en) * | 2021-11-12 | 2022-09-30 | 杭州中车车辆有限公司 | Straddle type monorail engineering vehicle and hydraulic system |
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