CN103140654A - Hydraulic preheating apparatus for hydraulic oil coolers in a large hydraulic excavator - Google Patents

Hydraulic preheating apparatus for hydraulic oil coolers in a large hydraulic excavator Download PDF

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Publication number
CN103140654A
CN103140654A CN2011800479190A CN201180047919A CN103140654A CN 103140654 A CN103140654 A CN 103140654A CN 2011800479190 A CN2011800479190 A CN 2011800479190A CN 201180047919 A CN201180047919 A CN 201180047919A CN 103140654 A CN103140654 A CN 103140654A
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CN
China
Prior art keywords
hydraulic oil
oil cooler
pressure
hydraulic
export carton
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2011800479190A
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Chinese (zh)
Other versions
CN103140654B (en
Inventor
R·艾姆明格
W·布塞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Global Mining HMS GmbH
Original Assignee
Bucyrus Hex GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bucyrus Hex GmbH filed Critical Bucyrus Hex GmbH
Publication of CN103140654A publication Critical patent/CN103140654A/en
Application granted granted Critical
Publication of CN103140654B publication Critical patent/CN103140654B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/002—Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/005—Controlling temperature of lubricant
    • F01M5/007—Thermostatic control
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/06—Derivation channels, e.g. bypass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/12—Safety or protection arrangements; Arrangements for preventing malfunction for preventing overpressure

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

An apparatus for preheating hydraulic oil which is located at low temperatures in at least one air-cooled hydraulic oil cooler, wherein at least one hydraulic oil cooler is arranged outside an engine compartment, in particular of a large hydraulic excavator, characterized in that the oil, in particular hot oil, coming from a tank is fed to the inlet box of the hydraulic oil cooler and is passed on via connecting lines and an interposed pressure relief valve or a non-return valve to the outlet box of at least one hydraulic oil cooler, wherein the outlet box and the cold oil located therein can be heated and fed to the tank.

Description

The hydraulic pressure Preheating unit that is used for the hydraulic oil cooler of large hydraulic excavator
Technical field
The present invention relates to a kind of device for preheating hydraulic oil as described in the preamble in claim 1.
Background technique
In the large hydraulic excavator, above-mentioned hydraulic oil cooler operated by rotary motion is outside at engine compartment.Due to such setting, there is following problem during the usage mining machine in the cold environment air, after stopping period, for example when device first puts into operation or after maintenance or maintenance work, the hydraulic oil that uses becomes thickness until solidifying point; Consequently cause damaging and causing thus the fault time of large hydraulic excavator in the hydraulic oil cooler that is arranged on the engine compartment outside.
The fin that the fin that air cooled hydraulic oil cooler is therefrom flow through by oil usually, air therefrom flow through and two collecting boxs that are used for the oil inflow and flow out consist of.
If the halted state when the large hydraulic excavator is by low temperature now puts into operation, the slow underground heat operation of oil hydraulic pump after starting motor.Simultaneously oil is in hydraulic oil container, be heated in the pipeline of pump chamber inside and in master unit, and wherein the oil in hydraulic oil container is heated rapidly to running temperature.Reach its running temperature if be arranged in the oil of hydraulic oil container, be assemblied in fan drive device and the cooling oil pump of the temperature transducer startup hydraulic oil cooler in fuel tank.Be that narrow fin and cooler are arranged on beyond engine compartment due to what be arranged in hydraulic oil cooler, make the hydraulic oil that is arranged in oil cooler not experience also that temperature raises or temperature raises not enough.Due to the situation that occurs now, namely, oil in hydraulic oil container has reached the temperature that needs cold oil, but be arranged in the oil of oil cooler fin or cold and can not wash away fast enough/rinse, so the cracking pressure that the back pressure that exists in system (Staudruck) may surpass cooler also cause the damage of hydraulic oil cooler thus.
According to experience, the inlet tank of above-mentioned hydraulic oil cooler and EXPORT CARTON have respectively joint.Want cooling oil to import in inlet tank, oil vertically flows to EXPORT CARTON by the fin of hydraulic oil cooler from this inlet tank.The oil that flows in EXPORT CARTON is transported to hydraulic oil container by outlet connection.The air that is in operation flatly passes through around the fin of hydraulic oil cooler.
DE19750814A1 discloses a heat exchanger, especially with the heat exchanger of oil cooler form, this heat exchanger has at least two separated fluid passages for different medium, described fluid passage is passed by the passage that is used for inflow and discharge medium, and has corresponding joint on these passages, has the passage for other medium, also have towards the lid of heat exchanger sealing, this lid consists of the fluid passage and comprises at least one control valve, can control according to temperature through-flow by it.
provided for equipment by DE69921618T2, cooling and the heating system of wheel loader or wheeled dump car for example, this system has the main pipe of being arranged to containing fluid, has the first heat exchanger that is connected with main pipe, and has the charger-air cooler for cooling compressed explosive motor pressurized air, described explosive motor is arranged in described equipment, wherein charger-air cooler is connected with main pipe, the second heat exchanger is connected with main pipe in the downstream of charger-air cooler, the pipeline that is used for hydraulic fluid and the second heat exchanger connect into make heat can the fluid of main pipe be used for transmission/transfer between the ducted hydraulic fluid of hydraulic fluid.
Summary of the invention
The object of the invention is to, be arranged in the especially wooden hydraulic oil rapid heating of the hydraulic oil cooler fin of large hydraulic excavator by streaming to make, be used for avoiding above-mentioned rough sledding.
This purpose realizes thus, to be transported to the inlet tank of hydraulic oil cooler from fuel tank, especially hot oil, and by the pressure-limit valve of connecting tube and middle connection or the EXPORT CARTON that safety check continues to direct at least one hydraulic oil cooler, wherein this EXPORT CARTON can be heated and be transported to fuel tank with the cold oil that is arranged in this EXPORT CARTON.
Provided the favourable improvement project of theme of the present invention by dependent claims.
When the oil that is arranged in the oil cooler fin is still cold, the oil that flow into the preheating in inlet tank that loads with operating pressure by the first joint is guided to the second joint of inlet tank and continues to be directed to the connecting tube that leads to EXPORT CARTON on oil cooler fin side by inlet tank.Be provided with pressure-limit valve in this pipeline.The compression fittings of this pressure-limit valve is connected with inlet tank via pipeline, and fuel tank connector is connected with the EXPORT CARTON of hydraulic oil cooler via another pipeline.
Flow to by the first joint in the inlet tank of hydraulic oil cooler if be in now the oil of the preheating under pressure, at the cold oil build-up pressure of the fin that is arranged in hydraulic oil cooler, because can not at once cold oil be urged out from fin.The second joint by inlet tank makes the oil of the preheating that is arranged in inlet tank be transported to pressure-limit valve via the second joint now.During the preset in surpassing pressure-limit valve/set pressure, valve open and allow oil through-flow to EXPORT CARTON from inlet tank, described set pressure is positioned at below the maximum operating pressure of hydraulic oil cooler.When the throughput voltage limit valve, oil continues to be heated and to be transported to according to the present invention the first joint of EXPORT CARTON.Via the second joint, oil is transported to fuel tank from EXPORT CARTON.
Therefore the deep fat from hydraulic oil container is under the pressure of hydraulic oil cooler inlet tank joint.Hydraulic oil continues to heat and be arranged in the EXPORT CARTON of hydraulic oil cooler by said apparatus simultaneously.Cooler is heated to large like this degree thus, utilizes the pressure that has (anstehenden) can freely rinse the fin that still stops up.As a result, the reduction of the back pressure in system and pressure-limit valve are closed.Then, hydraulic oil cooler is worked in normal state.
Also can use the especially safety check of spring pre-tightening on the pressure-limit valve position.
Description of drawings
Illustrate and be described below content of the present invention by means of the embodiment in accompanying drawing.Accompanying drawing illustrates:
The structure (prior art) that Fig. 1 is present
Fig. 2 has the preheating structure of pressure-limit valve
Fig. 3 has the preheating structure of spring pre-tightening safety check
Embodiment
Fig. 1 has technology with principal diagram.By the control circuit 3 that is arranged on the temperature transducer 1 in fuel tank 2 and is not shown specifically, utilize transfer pump 4 that hydraulic oil is directed into the inlet tank 6 of hydraulic oil cooler 7 via control valve 5 from fuel tank 2.Hydraulic oil build-up pressure and cold oil that will be present in this in the fin 7 ' of hydraulic oil cooler 7 urge in the EXPORT CARTON 8 of hydraulic oil cooler 7, and this oil is transported to fuel tank 2 from this EXPORT CARTON 8 via pipeline 9.
Fig. 2 illustrates according to device of the present invention with schematic diagram, and described device is cold for preheating, hydraulic oil that be present in the fin 7 ' of hydraulic oil cooler 7.Identical component are furnished with identical reference character.Can find out hydraulic oil cooler 7 with inlet tank 6 and EXPORT CARTON 8, pressure-limit valve 13 and from inlet tank 6 to pressure-limit valve 13 and from pressure-limit valve 13 to EXPORT CARTON 8 connecting tube 14,15.By the control circuit 3 that is arranged on the temperature transducer 1 in fuel tank 2 and is not shown specifically, utilize transfer pump 4 oil to be transported to the joint 10 of the inlet tank 6 of hydraulic oil cooler 7 via control valve 5 from hydraulic oil container 2.Cold and when the pressure of pressure-limit valve 13 adjusted is exceeded at oil, the oil that exists in inlet tank 6 is via the joint 11 of inlet tank 6 and flow to pressure-limit valve 13 by pipeline 14, and continues to flow to by pipeline 15 joint 16 of the EXPORT CARTON 8 of hydraulic oil cooler 7 from this pressure-limit valve 13.Heated oil continues to get back to fuel tank 2 by pipeline 9 conveyings via the joint 17 of the EXPORT CARTON 8 of hydraulic oil cooler 7.
Fig. 3 illustrates according to device of the present invention with schematic diagram, and this device is cold for preheating, hydraulic oil that be present in the fin 7 ' of hydraulic oil cooler 7, in this embodiment, uses the safety check 18 of spring pre-tightening to replace pressure-limit valves 13.In this embodiment, the function of the safety check 18 of spring pre-tightening is corresponding to the function of pressure-limit valve in Fig. 2 13.
Reference numerals list
1 temperature transducer
2 fuel tanks
3 control circuits
4 transfer pumps
5 control valves
The inlet tank of 6 hydraulic oil coolers
7 hydraulic oil coolers
7 ' fin
The EXPORT CARTON of 8 hydraulic oil coolers
9 pipelines
The joint of 10 inlet tank
The joint of 11 inlet tank
13 pressure-limit valves
14 connecting tubes
15 connecting tubes
The joint of 16 EXPORT CARTON
The joint of 17 EXPORT CARTON
The safety check of 18 spring pre-tightenings

Claims (5)

1. device that is used for preheating hydraulic oil, described hydraulic oil is arranged at least one air cooled hydraulic oil cooler (7) when low temperature, wherein at least one hydraulic oil cooler (7) is arranged on beyond the engine compartment of large hydraulic excavator especially, it is characterized in that, will be from fuel tank (2), especially hot oil is transported to the inlet tank (6) of hydraulic oil cooler (7), and by connecting tube (14, 15) and the middle pressure-limit valve (13) that connects or safety check (18) EXPORT CARTON (8) that continues to direct at least one hydraulic oil cooler (7), wherein, described EXPORT CARTON (8) and the cold oil that is arranged in this EXPORT CARTON can be heated and be transported to fuel tank (2).
2. device according to claim 1, it is characterized in that, flow to pressure-limit valve (13) or safety check (18) and brought up to higher temperature levels from low temperature level from the oil that pressure-limit valve (13) or safety check (18) flow to the EXPORT CARTON (8) of hydraulic oil cooler (7) before the EXPORT CARTON that enters into hydraulic oil cooler (7) (8) from the inlet tank (6) of hydraulic oil cooler (7).
3. device according to claim 1 and 2, it is characterized in that, described pressure-limit valve (13) is opened the pipeline (15) of the EXPORT CARTON (8) of leading to hydraulic oil cooler (7) when reaching the response pressure that presets, the response pressure that wherein presets is positioned at below the permission operating pressure of hydraulic oil cooler (7).
4. the described device of any one according to claim 1 to 3, is characterized in that, when lower than at the response pressure that presets on pressure-limit valve (13,18) time, closes the pipeline (15) of the EXPORT CARTON (8) of leading to hydraulic oil cooler (7).
5. the described device of any one according to claim 1 to 4, is characterized in that, can use the safety check (18) of spring pre-tightening to replace pressure-limit valve (13).
CN201180047919.0A 2010-08-04 2011-07-29 For the hydraulic pressure pwc thermal of the hydraulic oil cooler in large hydraulic excavator Expired - Fee Related CN103140654B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202010011010.6 2010-08-04
DE202010011010U DE202010011010U1 (en) 2010-08-04 2010-08-04 Hydraulic preheater for hydraulic oil cooler in a large hydraulic excavator
PCT/EP2011/003823 WO2012016668A1 (en) 2010-08-04 2011-07-29 Hydraulic preheating apparatus for hydraulic oil coolers in a large hydraulic excavator

Publications (2)

Publication Number Publication Date
CN103140654A true CN103140654A (en) 2013-06-05
CN103140654B CN103140654B (en) 2016-03-02

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ID=43049765

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Application Number Title Priority Date Filing Date
CN201180047919.0A Expired - Fee Related CN103140654B (en) 2010-08-04 2011-07-29 For the hydraulic pressure pwc thermal of the hydraulic oil cooler in large hydraulic excavator

Country Status (6)

Country Link
US (1) US20130213633A1 (en)
EP (1) EP2601390A1 (en)
CN (1) CN103140654B (en)
AU (1) AU2011287925A1 (en)
DE (1) DE202010011010U1 (en)
WO (1) WO2012016668A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103398626A (en) * 2013-07-26 2013-11-20 无锡市伟丰印刷机械厂 Beeping heat exchanger

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10436529B1 (en) * 2018-08-23 2019-10-08 William T. Holley, Jr. Hydraulic fluid coolers
GB2585908B (en) * 2019-07-23 2023-08-23 Bamford Excavators Ltd Working Machine
US10859203B1 (en) * 2020-03-12 2020-12-08 American Jereh International Corporation High-low pressure lubrication system for high-horsepower plunger pump

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DE102008020609A1 (en) * 2008-04-24 2009-10-29 Mann + Hummel Gmbh Heat exchangers, in particular oil coolers
CN102066670A (en) * 2009-04-06 2011-05-18 日立建机株式会社 Hydraulic circuit apparatus for hydraulic shovel

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Publication number Priority date Publication date Assignee Title
US4209062A (en) * 1978-02-10 1980-06-24 Karmazin Products Corporation Heat exchanger construction
DE4122904A1 (en) * 1991-07-11 1993-01-14 Laengerer & Reich Kuehler OIL COOLER
CN1666080A (en) * 2002-07-04 2005-09-07 Hydac股份有限公司 Device for heat exchange between flowable media
US20060060347A1 (en) * 2004-08-27 2006-03-23 George Moser Oil cooler
CN101133372A (en) * 2005-02-02 2008-02-27 开利公司 Parallel flow heat exchanger for heat pump applications
EP1772693A1 (en) * 2005-10-08 2007-04-11 Modine Manufacturing Company Brazed heat exchanger and manufacturing method
DE102008020609A1 (en) * 2008-04-24 2009-10-29 Mann + Hummel Gmbh Heat exchangers, in particular oil coolers
CN102066670A (en) * 2009-04-06 2011-05-18 日立建机株式会社 Hydraulic circuit apparatus for hydraulic shovel

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103398626A (en) * 2013-07-26 2013-11-20 无锡市伟丰印刷机械厂 Beeping heat exchanger

Also Published As

Publication number Publication date
CN103140654B (en) 2016-03-02
EP2601390A1 (en) 2013-06-12
US20130213633A1 (en) 2013-08-22
DE202010011010U1 (en) 2010-11-04
WO2012016668A1 (en) 2012-02-09
AU2011287925A1 (en) 2013-02-28

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