CN110131248B - Cooling and heating device of hydraulic transmission system and hydraulic transmission system - Google Patents
Cooling and heating device of hydraulic transmission system and hydraulic transmission system Download PDFInfo
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- CN110131248B CN110131248B CN201910217307.XA CN201910217307A CN110131248B CN 110131248 B CN110131248 B CN 110131248B CN 201910217307 A CN201910217307 A CN 201910217307A CN 110131248 B CN110131248 B CN 110131248B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/06—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
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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
- 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
- F15B21/0427—Heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention discloses a cooling and heating device of a hydraulic transmission system and the hydraulic transmission system, and relates to the technical field of cooling and heating devices. The cooling and heating device comprises a heat exchanger and a cooling water pump, wherein the heat exchanger is provided with an internal combustion engine cooling water inlet, an internal combustion engine cooling water outlet, a hydraulic oil inlet and a hydraulic oil outlet, the internal combustion engine cooling water inlet is communicated with the outlet of the cooling water pump, the inlet of the cooling water pump is communicated with the water cooling outlet of the internal combustion engine, the internal combustion engine cooling water outlet is communicated with the water cooling inlet of the internal combustion engine, the hydraulic oil inlet is communicated with the outlet of the hydraulic pump, the hydraulic oil outlet is communicated with the inlet of the hydraulic pump, when the cooling and, the cooling water pump and the hydraulic pump respectively drive cooling water and hydraulic oil of the internal combustion engine to circulate through the heat exchangers, the cooling water and the hydraulic oil exchange heat with the atmosphere or with each other in the heat exchangers, and heat dissipation of the internal combustion engine and heat dissipation and heating of a hydraulic transmission system are realized by one heat exchanger, so that the occupied space is saved.
Description
Technical Field
The invention relates to the technical field of cooling and heating devices, in particular to a cooling and heating device of a hydraulic transmission system and the hydraulic transmission system.
Background
Hydraulic transmission refers to a transmission mode in which energy is transmitted and controlled by using liquid (usually hydraulic oil) as a working medium. In a hydraulic transmission system, an internal combustion engine or an electric motor is generally used to drive a hydraulic pump in the hydraulic transmission system.
In a hydraulic transmission system driven by an internal combustion engine, the internal combustion engine heats up when in work to cause the temperature of the internal combustion engine to rise, and the normal work of the internal combustion engine is influenced by the overhigh temperature of the internal combustion engine. The hydraulic transmission system can generate heat during working to cause the temperature of hydraulic oil to rise, and the normal work of the hydraulic transmission system can be influenced by the overhigh temperature of the hydraulic oil. In order to ensure the normal operation of a hydraulic transmission system driven by an internal combustion engine, it is necessary to provide an internal combustion engine cooling device and a hydraulic oil cooling device. In addition, if the temperature of the hydraulic oil is low, the normal operation of the hydraulic transmission system is also affected, and therefore a hydraulic oil heating device is also needed to heat the hydraulic oil.
The arrangement of the internal combustion engine cooling device, the hydraulic oil cooling device, and the hydraulic oil heating device makes the hydraulic transmission system occupy a large amount of space.
Disclosure of Invention
The embodiment of the invention provides a cooling and heating device of a hydraulic transmission system and the hydraulic transmission system, which can save occupied space. The technical scheme is as follows:
in a first aspect, an embodiment of the present invention provides a cooling and heating device for a hydraulic transmission system, including a heat exchanger and a cooling water pump, where the heat exchanger has an internal combustion engine cooling water inlet, an internal combustion engine cooling water outlet, a hydraulic oil inlet, and a hydraulic oil outlet, the internal combustion engine cooling water inlet is communicated with the outlet of the cooling water pump, the inlet of the cooling water pump is used for being communicated with the water-cooling outlet of the internal combustion engine, the internal combustion engine cooling water outlet is used for being communicated with the water-cooling inlet of the internal combustion engine, the hydraulic oil inlet is used for being communicated with the outlet of the hydraulic pump, and the hydraulic oil outlet is used for being communicated.
Optionally, the cooling and heating device further includes a first valve and a second valve, an oil inlet of the first valve is used for being communicated with an outlet of the hydraulic pump, an oil outlet of the first valve is communicated with the hydraulic oil inlet, a hydraulic oil outlet is communicated with an oil inlet of the second valve, and an oil outlet of the second valve is used for being communicated with an inlet of the hydraulic pump.
Optionally, the cooling and heating device further includes a third valve, an oil inlet of the third valve is communicated with an oil inlet of the first valve, and an oil outlet of the third valve is communicated with an oil outlet of the second valve.
Optionally, the cooling and heating device further includes a controller, the controller is connected to the first valve and the second valve, and the controller is configured to control the first valve and the second valve to open if the oil temperature of the hydraulic oil of the hydraulic pump is lower than a first threshold or higher than a second threshold, and the second threshold is higher than the first threshold.
Optionally, the controller is further connected to the third valve, and the controller is configured to control the first valve and the second valve to close and control the third valve to open if the oil temperature of the hydraulic oil of the hydraulic transmission system is not lower than the first threshold and not higher than the second threshold.
Optionally, the cooling and heating device further comprises a first pressure relay and a second pressure relay, wherein the first pressure relay is used for being communicated with a water-cooling inlet of the internal combustion engine, and the second pressure relay is used for being communicated with an inlet of the hydraulic pump.
Optionally, the cooling and heating device further comprises a first temperature sensor and a second temperature sensor, the first temperature sensor is communicated with the cooling water outlet of the internal combustion engine, and the second temperature sensor is communicated with the hydraulic oil outlet.
Optionally, the cooling and heating device further comprises a filter for being installed on a pipeline connecting the engine cooling water outlet and the engine water cooling inlet.
Optionally, the cooling and heating device further comprises a fan for dissipating heat from the heat exchanger.
In a second aspect, embodiments of the present invention further provide a hydraulic transmission system including a hydraulic pump driven by the internal combustion engine, an internal combustion engine, and a cooling and heating device of the hydraulic transmission system according to the first aspect.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least: by arranging the heat exchanger and the cooling water pump, the heat exchanger is provided with an internal combustion engine cooling water inlet, an internal combustion engine cooling water outlet, a hydraulic oil inlet and a hydraulic oil outlet, the internal combustion engine cooling water inlet is communicated with the outlet of the cooling water pump, the inlet of the cooling water pump is communicated with the water cooling outlet of the internal combustion engine, the internal combustion engine cooling water outlet is communicated with the water cooling inlet of the internal combustion engine, the hydraulic oil inlet is communicated with the outlet of the hydraulic pump, the hydraulic oil outlet is communicated with the inlet of the hydraulic pump, when the internal combustion engine runs, the cooling water pump is started to enable the cooling water in a cooling water pipe of the internal combustion engine to circulate through the heat exchanger, the cooling water releases heat in the heat exchanger to realize the cooling of the internal combustion engine, when the hydraulic transmission system runs, the, the heat released by the cooling water of the internal combustion engine with higher temperature can be absorbed, so that the hydraulic oil is heated, if the temperature of the hydraulic oil is higher, the hydraulic oil is released to the atmosphere when circulating in the heat exchanger, so that the temperature of the hydraulic oil is reduced, the heat dissipation of the internal combustion engine, the heat dissipation of a hydraulic transmission system and the heating function can be realized by only one heat exchanger, an internal combustion engine cooling device, a hydraulic oil cooling device and a hydraulic oil heating device are not required to be respectively configured, and the occupied space is saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of a cooling and heating device of a hydraulic transmission system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic view of a cooling and heating apparatus of a hydraulic transmission system of an internal combustion engine. As shown in fig. 1, the cooling and heating device includes a heat exchanger 4 and a cooling water pump 5. The heat exchanger 4 has an engine cooling water inlet 6, an engine cooling water outlet 7, a hydraulic oil inlet 8, and a hydraulic oil outlet 9.
The cooling water inlet 6 of the internal combustion engine is communicated with the outlet of the cooling water pump 5, the inlet of the cooling water pump 5 is communicated with the water-cooling outlet of the internal combustion engine 2, the cooling water outlet 7 of the internal combustion engine is communicated with the water-cooling inlet of the internal combustion engine 2, the hydraulic oil inlet 8 is communicated with the outlet of the hydraulic pump 1, and the hydraulic oil outlet 9 is communicated with the inlet of the hydraulic pump 1.
By arranging the heat exchanger and the cooling water pump, the heat exchanger is provided with the cooling water inlet of the internal combustion engine, the cooling water outlet of the internal combustion engine, the hydraulic oil inlet and the hydraulic oil outlet, the cooling water inlet of the internal combustion engine is communicated with the outlet of the cooling water pump, the inlet of the cooling water pump is communicated with the water cooling outlet of the internal combustion engine, the cooling water outlet of the internal combustion engine is communicated with the water cooling inlet of the internal combustion engine, the hydraulic oil inlet is communicated with the outlet of the hydraulic pump, and the hydraulic oil outlet is. When the internal combustion engine runs, the cooling water pump is started to enable cooling water in the internal combustion engine to circulate through the heat exchanger, if the temperature of the hydraulic oil is low, the hydraulic oil can absorb heat released by the cooling water of the internal combustion engine with the high temperature when circulating in the heat exchanger, so that the hydraulic oil is heated, if the temperature of the hydraulic oil is high, the hydraulic oil releases heat to the atmosphere when circulating in the heat exchanger, so that the temperature of the hydraulic oil is reduced, the heat dissipation of the internal combustion engine, the heat dissipation of a hydraulic transmission system and the heating function can be achieved only by one heat exchanger, an internal combustion engine cooling device, a hydraulic oil cooling device and a hydraulic oil heating device do not need to be configured respectively.
For example, the heat exchanger 4 may have two sets of flow passages, wherein the inlet and outlet of one set of flow passages are an engine cooling water inlet 6 and an engine cooling water outlet 7, respectively, and the inlet and outlet of the other set of flow passages are a hydraulic oil inlet 8 and a hydraulic oil outlet 9, respectively. The pipe walls of the two sets of flow passages can be mutually contacted, so that the heat exchange between the two sets of flow passages is facilitated. Radiating fins can be arranged outside the pipe walls of the two sets of flow passages so as to facilitate heat exchange between the flow passages and the atmosphere. When the cooling water and the hydraulic oil of the internal combustion engine respectively flow through the two sets of runners, heat exchange exists between the two sets of runners and the atmosphere, and when the temperature of the hydraulic oil is lower, the heat of the cooling water of the internal combustion engine is transferred to the atmosphere and the hydraulic oil, so that the temperature of the hydraulic oil is increased. When the temperature of the hydraulic oil is higher, the cooling water of the internal combustion engine and the hydraulic oil both transfer heat to the atmosphere, so that the temperature of the cooling water of the internal combustion engine and the temperature of the hydraulic oil are reduced. When the temperature of the hydraulic oil is high, even if the temperature of the hydraulic oil is different from that of the cooling water of the internal combustion engine, a certain heat exchange exists between the hydraulic oil and the cooling water of the internal combustion engine, for example, although the temperature of the hydraulic oil is high, the temperature of the hydraulic oil is still lower than that of the cooling water of the internal combustion engine, a part of heat of the cooling water of the internal combustion engine is also transferred to the hydraulic oil. However, since the temperature of the atmosphere is much lower than the temperature of the hydraulic oil and the engine cooling water, the heat exchange effect between the hydraulic oil and the atmosphere is stronger than that between the engine cooling water and the hydraulic oil, so that the temperature of the hydraulic oil is still lowered.
As shown in fig. 1, the cooling and heating device may further include a first valve 12 and a second valve 13, an oil inlet of the first valve 12 is used for communicating with an outlet of the hydraulic pump 1, an oil outlet of the first valve 12 is communicated with the hydraulic oil inlet 8, the hydraulic oil outlet 9 is communicated with an oil inlet of the second valve 13, and an oil outlet of the second valve 13 is used for communicating with an inlet of the hydraulic pump 1. If the temperature of the hydraulic oil is low and heating is required, the first valve 12 and the second valve 13 may be opened to circulate the hydraulic oil of the hydraulic transmission system through the heat exchanger 4, and the hydraulic oil exchanges heat with the internal combustion engine cooling water with a high temperature in the heat exchanger 4 to increase the temperature of the hydraulic oil. If the temperature of the hydraulic oil is high and cooling is required, the first valve 12 and the second valve 13 may be opened to circulate the hydraulic oil of the hydraulic transmission system through the heat exchanger 4, where the hydraulic oil exchanges heat with the lower temperature atmosphere, thereby lowering the temperature of the hydraulic oil. If the temperature of the hydraulic oil is suitable and neither heating nor cooling is required, the first valve 12 and the second valve 13 are closed so that the hydraulic oil of the hydraulic system does not flow through the heat exchanger 4.
Optionally, the cooling and heating device may further include a third valve 14, an oil inlet of the third valve 14 is communicated with an oil inlet of the first valve 12, and an oil outlet of the third valve 14 is communicated with an oil outlet of the second valve 13. If the temperature of the hydraulic oil is proper, the first valve 12 and the second valve 13 are closed, the third valve 14 is opened, the hydraulic oil circulates through the third valve 14, and the hydraulic oil exchanges heat with the atmosphere through the pipe wall in the pipeline, so that the temperature rising speed of the hydraulic oil during the operation of the hydraulic system is reduced, and the long-time normal operation of the hydraulic system is realized.
As shown in fig. 1, the cooling and heating system may further include a controller (not shown) connected to the first valve 12 and the second valve 13, wherein the controller is configured to control the first valve 12 and the second valve 13 to open if the oil temperature of the hydraulic oil of the hydraulic transmission system is lower than a first threshold value or higher than a second threshold value, and the second threshold value is higher than the first threshold value. For example, the first threshold value is 5 ℃, the second threshold value is 40 ℃, when the oil temperature of the hydraulic oil is lower than 5 ℃, the controller controls the first valve 12 and the second valve 13 to be opened, the third valve 14 is closed, the hydraulic oil circulates through the heat exchanger 4, the hydraulic oil exchanges heat with the internal combustion engine cooling water with higher temperature in the heat exchanger 4, the heat generated by the internal combustion engine 1 is used for heating the hydraulic oil, the cost is saved, and the waste of energy is avoided. When the oil temperature of the hydraulic oil is higher than 40 ℃, the controller controls the first valve 12 and the second valve 13 to be opened, the third valve 14 to be closed, the hydraulic oil is circulated through the heat exchanger 4, and the hydraulic oil exchanges heat with the atmosphere in the heat exchanger 4, so that the cooling of the hydraulic oil is realized.
Optionally, the controller may be further connected to the third valve 14, and the controller is configured to control the first valve 12 and the second valve 13 to close and the third valve 14 to open if the oil temperature of the hydraulic oil of the hydraulic transmission system is not lower than the first threshold and not higher than the second threshold. Similarly, taking the first threshold value as 5 ℃ and the second threshold value as 40 ℃ as an example, when the oil temperature of the hydraulic oil is not lower than 5 ℃ and not higher than 40 ℃, the controller controls the first valve 12 and the second valve 13 to close, the third valve 14 to open, the hydraulic oil circulates through the third valve 14, meanwhile, the engine cooling water circulates through the heat exchanger 4, and the engine cooling water exchanges heat with the atmosphere in the heat exchanger 4, so that the engine cooling water is cooled independently.
The specific values of the first threshold and the second threshold are merely examples, and the first threshold and the second threshold may be set to other values, for example, the first threshold may be set to 10 ℃ or 15 ℃, and the second threshold may be set to 55 ℃ or 60 ℃. Different first and second thresholds may be set for different hydraulic drive systems.
When the cooling and heating system includes a controller, the first valve 12, the second valve 13, and the third valve 14 may be all solenoid valves, which facilitates the control of the controller. Illustratively, the controller may be a PLC (Programmable logic controller). When the cooling and heating system does not include a controller, the first valve 12, the second valve 13, and the third valve 14 may be manual valves, so that the workers can control the opening and closing manually.
As shown in fig. 1, the cooling and heating apparatus may further include a first pressure relay 15 and a second pressure relay 16, the first pressure relay 15 being adapted to communicate with a water-cooled inlet of the internal combustion engine 2, and the second pressure relay 16 being adapted to communicate with an inlet of the hydraulic pump 1. When the system is in operation, the first pressure relay 15 and the second pressure relay 16 respectively detect the water pressure of the cooling water of the internal combustion engine 2 and the oil pressure of the hydraulic oil of the hydraulic transmission system, so that an operator can conveniently control the cooling and heating device according to the water pressure and the oil pressure.
Optionally, the cooling and heating device may further include an alarm (not shown in the figure), which may be connected to the first pressure relay 15 and the second pressure relay 16, and may issue a first alarm if the pressure value detected by the first pressure relay 15 exceeds the hydraulic pressure threshold, and may issue a second alarm if the pressure value detected by the second pressure relay 16 exceeds the hydraulic pressure threshold. Both the water pressure threshold and the oil pressure threshold can be set manually.
Optionally, the cooling and heating device may further include a liquid level relay 18, and the liquid level relay 18 is provided on the heat exchanger 4 to detect the liquid level of the cooling water of the internal combustion engine. The level relay 18 may be connected to an alarm which may issue a third alarm and in time inform the staff if the level of the engine cooling water is below a level threshold. The first alarm, the second alarm and the third alarm may be different alarm patterns for easy discrimination.
As shown in fig. 1, the cooling and heating device may further include a fan 3, and the fan 3 is used for dissipating heat from the heat exchanger 4, so as to further accelerate heat exchange between the internal combustion engine cooling water or hydraulic oil circulating in the heat exchanger 4 and the atmosphere, and improve the cooling effect of the heat exchanger.
As shown in fig. 1, the cooling and heating device may further include a first temperature sensor 10 and a second temperature sensor 11, the first temperature sensor 10 being in communication with the engine cooling water outlet 7, and the second temperature sensor 11 being in communication with the hydraulic oil outlet 9. The first temperature sensor 10 can detect the water temperature of the cooling water of the internal combustion engine, and the second temperature sensor 11 can detect the oil temperature of the hydraulic oil in the hydraulic transmission system, so that an operator can conveniently control the cooling and heating device according to the water temperature and the oil temperature.
As shown in fig. 1, the cooling and heating apparatus may further include a filter 17, and the filter 17 is adapted to be installed on a pipe connecting the engine cooling water outlet 7 and the engine 2 water-cooled inlet. The filter 17 can filter out impurities of the cooling water in the combustion engine 2 when the system is in operation.
An embodiment of the present invention also provides a hydraulic transmission system including a hydraulic pump 1, an internal combustion engine 2, and a cooling and heating device, the hydraulic pump 1 being driven by the internal combustion engine 2, the cooling and heating device being the cooling and heating device shown in fig. 1. The hydraulic transmission system can realize the functions of heat dissipation of the internal combustion engine and heat dissipation and heating of the hydraulic transmission system only by one heat exchanger, and does not need to be provided with an internal combustion engine cooling device, a hydraulic oil cooling device and a hydraulic oil heating device respectively, so that the occupied space is saved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a hydraulic transmission system's cooling heating device, hydraulic transmission system includes hydraulic pump (1), hydraulic pump (1) is through internal-combustion engine (2) drive, its characterized in that, cooling heating device includes heat exchanger (4), cooling water pump (5), first valve (12), second valve (13) and third valve (14), heat exchanger (4) have internal-combustion engine cooling water import (6), internal-combustion engine cooling water export (7), hydraulic oil import (8) and hydraulic oil export (9), internal-combustion engine cooling water import (6) with the export intercommunication of cooling water pump (5), the import of cooling water pump (5) be used for with the water-cooling export intercommunication of internal-combustion engine (2), internal-combustion engine cooling water export (7) be used for with the water-cooling import intercommunication of internal-combustion engine (2), hydraulic oil import (8) be used for with the export intercommunication of hydraulic pump (1), the hydraulic oil outlet (9) is communicated with an inlet of the hydraulic pump (1);
an oil inlet of the first valve (12) is used for being communicated with an outlet of the hydraulic pump (1), an oil outlet of the first valve (12) is communicated with the hydraulic oil inlet (8), a hydraulic oil outlet (9) is communicated with an oil inlet of the second valve (13), and an oil outlet of the second valve (13) is used for being communicated with an inlet of the hydraulic pump (1);
an oil inlet of the third valve (14) is communicated with an oil inlet of the first valve (12), and an oil outlet of the third valve (14) is communicated with an oil outlet of the second valve (13);
heat exchanger (4) have two sets of runners, one set the import and the export of runner do respectively internal-combustion engine cooling water inlet (6) with internal-combustion engine cooling water outlet (7), another set the import and the export of runner do respectively hydraulic oil import (8) with hydraulic oil export (9), the pipe wall of two sets of runners contacts each other, the pipe wall of runner still is provided with heat radiation fins outward.
2. A cooling and heating device according to claim 1, characterized in that it further comprises a controller, which is connected to the first valve (12) and the second valve (13), and which is configured to control the first valve (12) and the second valve (13) to open if the oil temperature of the hydraulic oil of the hydraulic transmission system is lower than a first threshold value or higher than a second threshold value, which is higher than the first threshold value.
3. A cooling and heating device according to claim 2, characterized in that the controller is also connected to the third valve (14), and the controller is configured to control the first valve (12) and the second valve (13) to close and the third valve (14) to open if the oil temperature of the hydraulic oil of the hydraulic transmission system is not lower than the first threshold value and not higher than the second threshold value.
4. A cooling and heating device according to any one of claims 1-3, characterized in that the cooling and heating device further comprises a first pressure relay (15) and a second pressure relay (16), the first pressure relay (15) being adapted to communicate with a water-cooled inlet of the internal combustion engine (2), the second pressure relay (16) being adapted to communicate with an inlet of the hydraulic pump (1).
5. A cooling and heating device according to any one of claims 1-3, characterized in that the cooling and heating device further comprises a first temperature sensor (10) and a second temperature sensor (11), the first temperature sensor (10) being in communication with the engine cooling water outlet (7), the second temperature sensor (11) being in communication with the hydraulic oil outlet (9).
6. A cooling and heating apparatus according to any one of claims 1-3, further comprising a filter (17), said filter (17) being adapted to be mounted on a pipe connecting said engine cooling water outlet (7) and said engine water cooling inlet (2).
7. A cooling and heating device according to any one of claims 1-3, characterized in that the cooling and heating device further comprises a fan (3), the fan (3) being adapted to dissipate heat from the heat exchanger (4).
8. A hydraulic transmission system comprising a hydraulic pump (1) and an internal combustion engine (2), the hydraulic pump (1) being driven by the internal combustion engine (2), characterized in that the hydraulic transmission system further comprises a cooling and heating device according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910217307.XA CN110131248B (en) | 2019-03-21 | 2019-03-21 | Cooling and heating device of hydraulic transmission system and hydraulic transmission system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910217307.XA CN110131248B (en) | 2019-03-21 | 2019-03-21 | Cooling and heating device of hydraulic transmission system and hydraulic transmission system |
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| CN110131248A CN110131248A (en) | 2019-08-16 |
| CN110131248B true CN110131248B (en) | 2020-10-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110529467B (en) * | 2019-09-16 | 2020-12-04 | 扬州三元动力机械有限公司 | Hydraulic pressure station that heat dispersion is good with filtering capability |
| CN110645233B (en) * | 2019-09-26 | 2021-10-01 | 台州市晶钻智能科技有限公司 | Hydraulic pressure station that radiating effect is good convenient to remove |
| CN111306145A (en) * | 2020-03-20 | 2020-06-19 | 重庆凯装自动化设备有限公司 | Hydraulic oil purification system |
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