CN215293098U - Hydraulic system oil circuit cooling structure - Google Patents
Hydraulic system oil circuit cooling structure Download PDFInfo
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- CN215293098U CN215293098U CN202120470939.XU CN202120470939U CN215293098U CN 215293098 U CN215293098 U CN 215293098U CN 202120470939 U CN202120470939 U CN 202120470939U CN 215293098 U CN215293098 U CN 215293098U
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Abstract
The utility model discloses a hydraulic system oil circuit cooling structure, which comprises an oil tank, a main motor pump set, a secondary motor pump set, a one-way stop valve module and a bypass cooling oil circuit, wherein the oil inlet end of the main motor pump set is communicated with the oil tank, and the oil outlet end of the main motor pump set is communicated with a hydraulic system; the oil inlet end of the slave motor pump set is communicated with an oil tank; the input end of the one-way stop valve module is communicated with the oil outlet end of the slave motor-pump set, and the first output end of the one-way stop valve module is communicated with the hydraulic system; the oil inlet end of the bypass cooling oil way is communicated with the second output end of the one-way stop valve module, and the oil outlet end of the bypass cooling oil way is communicated with the oil port of the bypass so as to supply oil to and cool the bypass through the bypass cooling oil way; wherein, under the first state, the first output of one-way stop valve module control is opened, the second output is closed, under the second state, the first output of one-way stop valve module control is closed, the second output is opened to waste the electric energy and the higher technical problem of cost among the solution prior art.
Description
Technical Field
The utility model relates to a large-scale hydraulic equipment technical field especially relates to a hydraulic system oil circuit cooling structure.
Background
In the large hydraulic equipment industry, there is often a large system flow demand, but at the same time limited by pump displacement. Therefore, multiple pumps are often used to combine to achieve high flow rates. And large-scale hydraulic equipment needs to use special cooling motor to cool, and along with the increase of the models, the heat production is more, and the required specification of the cooling motor is also larger, so the production cost is increased. In order to control cost, a cooling motor generally adopts a common three-phase asynchronous motor, but a plurality of motor pump sets can always run in the whole life cycle of the equipment operation, the rotating speed cannot be adjusted along with the change of the external temperature and the internal oil temperature, and the waste of electric energy and the increase of cost are caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hydraulic system oil circuit cooling structure to a plurality of motor pump package operate always among the solution prior art, cause the extravagant and the higher technical problem of cost of electric energy.
In order to achieve the above object, the technical scheme of the utility model provides a hydraulic system oil circuit cooling structure is provided, include:
an oil tank;
the oil inlet end of the main motor pump set is communicated with the oil tank, and the oil outlet end of the main motor pump set is communicated with the hydraulic system;
the oil inlet end of the slave motor-pump set is communicated with the oil tank;
the input end of the one-way stop valve module is communicated with the oil outlet end of the slave motor-pump set, and the first output end of the one-way stop valve module is communicated with a hydraulic system;
the oil inlet end of the bypass cooling oil path is communicated with the second output end of the one-way stop valve module, and the oil outlet end of the bypass cooling oil path is communicated with the oil port of the bypass so as to supply oil to and cool the bypass through the bypass cooling oil path;
the hydraulic system oil path cooling structure comprises a first state and a second state, wherein in the first state, the one-way stop valve module controls the first output end to be opened and the second output end to be closed, and in the second state, the one-way stop valve module controls the first output end to be closed and the second output end to be opened.
As one of the preferred schemes, the slave motor-pump group comprises a first slave motor-pump group and a second slave motor-pump group;
the one-way stop valve module comprises a one-way stop valve and an oil inlet stop valve;
the oil inlet end of the first slave motor pump set is communicated with the oil tank, the oil inlet end of the second slave motor pump set is communicated with the oil tank, the oil outlet end of the first slave motor pump set is connected with the oil outlet end of the second slave motor pump set to form a confluence node, the confluence node is communicated with the input ends of the one-way stop valve and the oil inlet stop valve respectively, the output end of the one-way stop valve is communicated with a hydraulic system, and the output end of the oil inlet stop valve is communicated with the oil inlet end of the bypass cooling oil path.
As one of preferable solutions, the oil path cooling structure of the hydraulic system further includes:
a first one-way valve connected between the first slave motor-pump set and the merge node;
a second one-way valve connected between the second slave motor-pump set and the merge node.
As one of preferable solutions, the oil path cooling structure of the hydraulic system further includes:
the input end of the first overflow valve is communicated with the oil outlet end of the main motor pump group, and the output end of the first overflow valve is communicated with the oil tank;
the input end of the second overflow valve is connected between the first slave motor pump set and the first one-way valve, and the output end of the second overflow valve is communicated with the oil tank;
and the input end of the third overflow valve is connected between the second slave motor pump set and the second one-way valve, and the output end of the third overflow valve is communicated with the oil tank.
As one of preferable schemes, the bypass cooling oil path includes a cooler, one end of the cooler is communicated with the output end of the oil inlet stop valve, the other end of the cooler is communicated with the oil tank, and the cooler is used for supplying oil and cooling the bypass.
As one preferable scheme, the bypass cooling oil path further comprises a fourth overflow valve, an input end of the fourth overflow valve is connected between the oil inlet stop valve and the cooler, and an output end of the fourth overflow valve is communicated with the oil tank.
As one of the preferred schemes, the hydraulic system oil path cooling structure further comprises an oil pressure monitoring sensor, and the oil pressure monitoring sensor is connected to the oil inlet stop valve.
Preferably, the main motor-pump set comprises a main servo motor and a main pump, and the main servo motor is connected with the main pump.
As one of the preferable schemes, the first slave motor-pump group comprises a first slave servo motor and a first slave pump, and the first slave servo motor is connected with the first slave pump;
the second slave motor-pump group comprises a second slave servo motor and a second slave pump, and the second slave servo motor is connected with the second slave pump.
Preferably, the valve cover of the one-way stop valve is overlapped with a shuttle valve, so that high-pressure oil of a hydraulic system cannot reversely flow back to the confluence of the first slave motor-pump set and the second slave motor-pump set, and the one-way stop function of the one-way stop valve is realized.
In summary, the application the utility model discloses hydraulic system oil circuit cooling structure's technical scheme has following beneficial effect or advantage at least:
the utility model discloses a hydraulic system oil circuit cooling structure, in the time quantum that hydraulic system needs large-traffic, one-way stop valve module control its first output is opened, the second output is closed, main motor pump group and from the motor pump combination flow provide large-traffic fluid for hydraulic system jointly, in the time quantum that hydraulic system does not need large-traffic, one-way stop valve module control its first output is closed, the second output is opened, at this moment, one-way stop valve module separates the fluid that main motor pump group and follow motor pump group draw, only main motor pump group provides fluid for hydraulic system, and from motor pump group provides cooling fluid for bypass cooling oil circuit, so that this bypass cooling oil circuit carries out the fuel feeding cooling to the bypass, thereby saved the motor that is used for bypass cooling specially, the cost is reduced, in order to solve among the prior art a plurality of motor pump groups and operate always, causing the technical problems of electric energy waste and high cost.
In order to make the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
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 described 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 without creative efforts.
Fig. 1 is a schematic structural diagram of an oil path cooling structure of a hydraulic system according to an embodiment of the present invention;
wherein the figures include the following reference numerals: 1. a main motor pump unit; 2. a first slave motor-pump group; 3. a second slave motor-pump group; 4. a first overflow valve; 5. a second overflow valve; 6. a third overflow valve; 7. a first check valve; 8. a second one-way valve; 9. a one-way stop valve; 10. an oil inlet stop valve; 11. an oil pressure monitoring sensor; 12. a fourth spill valve; 13. a cooler; 14. and an oil tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Referring to fig. 1, the present embodiment provides a hydraulic system oil path cooling structure, including an oil tank 14, a main motor pump set 1, a slave motor pump set, a one-way stop valve module, and a bypass cooling oil path, where an oil inlet end of the main motor pump set 1 is communicated with the oil tank 14, and an oil outlet end of the main motor pump set 1 is communicated with a hydraulic system; the oil inlet end of the slave motor-pump set is communicated with the oil tank 14; the input end of the one-way stop valve module is communicated with the oil outlet end of the slave motor-pump set, and the first output end of the one-way stop valve module is communicated with the hydraulic system; the oil inlet end of the bypass cooling oil way is communicated with the second output end of the one-way stop valve module, and the oil outlet end of the bypass cooling oil way is communicated with the oil port of the bypass so as to supply oil to and cool the bypass through the bypass cooling oil way.
The hydraulic system oil circuit cooling structure comprises a first state and a second state, wherein in the first state, the one-way stop valve module controls the first output end to be opened and the second output end to be closed, and in the second state, the one-way stop valve module controls the first output end to be closed and the second output end to be opened.
In the embodiment, in the time period that the hydraulic system needs large flow, the one-way stop valve module controls the first output end to be opened and the second output end to be closed, the main motor pump unit 1 and the slave motor pump combined flow together provide large flow of oil for the hydraulic system, in the time period that the hydraulic system does not need large flow, the one-way stop valve module controls the first output end to be closed and the second output end to be opened, at the time, the one-way stop valve module separates the oil extracted from the main motor pump unit 1 and the slave motor pump unit, only the main motor pump unit 1 provides the oil for the hydraulic system, and the slave motor pump unit provides cooling oil for the bypass cooling oil path, so that the bypass cooling oil path supplies oil for cooling a bypass, thereby omitting a motor specially used for bypass cooling, reducing the cost, and solving the problem that a plurality of motor pump units in the prior art always operate, the technical problems of electric energy waste and high cost are caused, so that the utilization efficiency of the slave motor-pump set is improved, and unnecessary impact on the slave motor-pump set caused by frequent starting and stopping is reduced.
In particular, the slave motor-pump group comprises a first slave motor-pump group 2 and a second slave motor-pump group 3; the one-way stop valve module comprises a one-way stop valve 9 and an oil inlet stop valve 10.
The oil inlet end of the first slave motor-pump set 2 is communicated with an oil tank 14, the oil inlet end of the second slave motor-pump set 3 is communicated with the oil tank 14, the oil outlet end of the first slave motor-pump set 2 is connected with the oil outlet end of the second slave motor-pump set 3 to form a confluence node, the confluence node is respectively communicated with the input ends of the one-way stop valve 9 and the oil inlet stop valve 10, the output end of the one-way stop valve 9 is communicated with a hydraulic system, and the output end of the oil inlet stop valve 10 is communicated with the oil inlet end of a bypass cooling oil path, so that in a time period when a hydraulic system needs a large flow, the one-way stop valve 9 of the one-way stop valve module is opened, the oil inlet stop valve 10 is closed, the oil pumped by the main motor-pump set 1, the first slave motor-pump set 2 and the second slave motor-pump set 3 are converged to simultaneously provide the large flow of oil for the hydraulic system, and in a time period when the hydraulic system does not need a large flow, the one-way stop valve 9 of the one-way stop valve module is closed, The oil inlet stop valve 10 is opened, at the moment, the one-way stop valve module separates the main motor pump unit 1 from oil extracted from the motor pump unit, only the main motor pump unit 1 provides small-flow oil for a hydraulic system, and the first slave motor pump unit 2 and the second slave motor pump unit 3 provide circulating cooling oil for a bypass cooling oil path, so that the bypass cooling oil path supplies oil for cooling a bypass, a motor specially used for bypass cooling is omitted, the electric energy consumption and the cost are reduced, and a pipeline is simplified.
It can be understood that the number of the main motor-pump unit 1 and the number of the slave motor-pump units can be one or more than one, and not only limited to one main motor-pump unit 1 and two slave motor-pump units, in addition, the slave motor-pump units can be used for the bypass cooling oil circuit, and also can be used for the bypass cooling oil circuit partially, and the simple adjustment and modification of the oil circuit cooling structure of the hydraulic system can be performed according to the actual situation of the hydraulic system, and the simple modifications of the number of the main motor-pump unit 1 and the slave motor-pump units and the number of the slave motor-pump units used for the bypass cooling oil circuit are all within the protection scope of the present invention without creative labor.
In the embodiment, the hydraulic system oil circuit cooling structure further comprises a first check valve 7 and a second check valve 8, wherein the first check valve 7 is connected between the first slave motor-pump group 2 and the confluence node; the second one-way valve 8 is connected between the second slave motor-pump set 3 and the confluence node, and the first one-way valve 7 and the second one-way valve 8 isolate the two slave motor-pump sets from the master motor-pump set 1 respectively, so that the negative influence of pressure fluctuation on the slave motor-pump sets is prevented.
Specifically, the hydraulic system oil path cooling structure further comprises a first overflow valve 4, a second overflow valve 5 and a third overflow valve 6, wherein the input end of the first overflow valve 4 is communicated with the oil outlet end of the main motor pump group 1, and the output end of the first overflow valve 4 is communicated with an oil tank 14; the input end of the second overflow valve 5 is connected between the first slave motor-pump set 2 and the first one-way valve 7, and the output end of the second overflow valve 5 is communicated with the oil tank 14; the input end of the third overflow valve 6 is connected between the second slave motor-pump set 3 and the second one-way valve 8, and the output end of the third overflow valve 6 is communicated with the oil tank 14.
That is, here, the first relief valve 4 serves as a relief valve of the master motor-pump group 1, the second relief valve 5 serves as a relief valve of the first slave motor-pump group 2, and the third relief valve 6 serves as a relief valve of the second slave motor-pump group 3, so that high-pressure oil pumped from the oil tank 14 flows back into the oil tank 14 through the relief valves again, thereby ensuring stability and safety of the hydraulic system oil pressure.
In this embodiment, the bypass cooling oil path includes a cooler 13, one end of the cooler 13 is communicated with the output end of the oil inlet stop valve 10, the other end of the cooler 13 is communicated with the oil tank 14, and the cooler 13 is used for supplying oil and cooling to the bypass.
Specifically, the bypass cooling oil path further comprises a fourth overflow valve 12, an input end of the fourth overflow valve 12 is connected between the oil inlet stop valve 10 and the cooler 13, and an output end of the fourth overflow valve 12 is communicated with the oil tank 14.
Further, hydraulic system oil circuit cooling structure still includes oil pressure monitoring sensor 11, and oil pressure monitoring sensor 11 connects on oil feed stop valve 10.
In this embodiment, the main motor-pump unit 1 includes a main servo motor and a main pump, the main servo motor is connected to the main pump, the speed is adjustable by using the servo motor, the rotating speed can be adjusted according to the oil temperature, and the electric energy consumption is further saved.
Specifically, the first slave motor-pump group 2 includes a first slave servomotor and a first slave pump, the first slave servomotor and the first slave pump being connected; the second slave motor pump group 3 comprises a second slave servo motor and a second slave pump, the second slave servo motor is connected with the second slave pump, the first slave servo motor, the first slave pump, the second slave servo motor and the second slave pump can be communicated through couplers, filters can be arranged between the main motor pump group 1, the first slave motor pump group 2 and the second slave motor pump group 3 and the oil tank 14 respectively to prevent impurities or pollutants in the oil tank 14 from entering the hydraulic system to cause oil circuit blockage, and the filters can be arranged on the bypass cooling oil circuit to filter the impurities or pollutants in the bypass cooling oil liquid.
In order to protect the bypass cooling oil path and prevent abnormal actions of the one-way stop valve 9 caused by combined flow of the two slave motor pumps, the reverse flowing oil of the system damages the bypass cooling oil path, and the shuttle valve is superposed on the valve cover flowing from the motor pump combination to the one-way stop valve 9, so that the one-way stop function of the system is realized, namely, high-pressure oil of the system cannot reversely flow back to the confluence part of the slave motor pump set. Simultaneously, for preventing from the too high pressure influence bypass cooling oil circuit of pump mouth of motor pump package, and set up twice safety protection measure: one is that the fourth relief valve 12 serves as a safety valve of the bypass cooling oil path to play a role in hydraulic safety protection; and secondly, a bypass cooling pressure monitoring sensor is arranged at the position where the two slave motor pumps are combined to flow, the fourth overflow valve 12 of the bypass cooling oil path is cut off when the oil pressure is too high, the rotating speed of the slave motor pump set is adjusted, and secondary protection is arranged on the bypass cooling oil path from a software level, so that the whole system is safe, stable and reliable.
It should be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Certain terms are used throughout the description and following claims to refer to particular components. One of ordinary skill in the art will appreciate that manufacturers may refer to a component by different names. This document does not intend to distinguish between components that differ in function but not name. In the following description and claims, the terms "including," comprising, "and" including, "are intended to be open-ended terms such that they are interpreted to mean" including, but not limited to.
In addition, it should be noted that, in the description of the present invention, the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the above terms do not have special meanings, and therefore, the scope of protection of the present application is not to be construed as being limited, and in the description of the present invention, unless otherwise stated, the meaning of "a plurality" means two or more.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (10)
1. A hydraulic system oil circuit cooling structure, characterized by includes:
an oil tank;
the oil inlet end of the main motor pump set is communicated with the oil tank, and the oil outlet end of the main motor pump set is communicated with the hydraulic system;
the oil inlet end of the slave motor-pump set is communicated with the oil tank;
the input end of the one-way stop valve module is communicated with the oil outlet end of the slave motor-pump set, and the first output end of the one-way stop valve module is communicated with a hydraulic system;
the oil inlet end of the bypass cooling oil path is communicated with the second output end of the one-way stop valve module, and the oil outlet end of the bypass cooling oil path is communicated with the oil port of the bypass so as to supply oil to and cool the bypass through the bypass cooling oil path;
the hydraulic system oil path cooling structure comprises a first state and a second state, wherein in the first state, the one-way stop valve module controls the first output end to be opened and the second output end to be closed, and in the second state, the one-way stop valve module controls the first output end to be closed and the second output end to be opened.
2. The hydraulic system oil circuit cooling structure as claimed in claim 1, wherein the slave motor-pump group comprises a first slave motor-pump group and a second slave motor-pump group;
the one-way stop valve module comprises a one-way stop valve and an oil inlet stop valve;
the oil inlet end of the first slave motor pump set is communicated with the oil tank, the oil inlet end of the second slave motor pump set is communicated with the oil tank, the oil outlet end of the first slave motor pump set is connected with the oil outlet end of the second slave motor pump set to form a confluence node, the confluence node is communicated with the input ends of the one-way stop valve and the oil inlet stop valve respectively, the output end of the one-way stop valve is communicated with a hydraulic system, and the output end of the oil inlet stop valve is communicated with the oil inlet end of the bypass cooling oil path.
3. The hydraulic system oil circuit cooling structure according to claim 2, further comprising:
a first one-way valve connected between the first slave motor-pump set and the merge node;
a second one-way valve connected between the second slave motor-pump set and the merge node.
4. The hydraulic system oil circuit cooling structure according to claim 3, further comprising:
the input end of the first overflow valve is communicated with the oil outlet end of the main motor pump group, and the output end of the first overflow valve is communicated with the oil tank;
the input end of the second overflow valve is connected between the first slave motor pump set and the first one-way valve, and the output end of the second overflow valve is communicated with the oil tank;
and the input end of the third overflow valve is connected between the second slave motor pump set and the second one-way valve, and the output end of the third overflow valve is communicated with the oil tank.
5. The hydraulic system oil circuit cooling structure as claimed in claim 4, wherein the bypass cooling oil circuit includes a cooler, one end of the cooler is communicated with the output end of the oil inlet stop valve, the other end of the cooler is communicated with the oil tank, and the cooler is used for supplying oil and cooling to the bypass.
6. The hydraulic system oil circuit cooling structure as claimed in claim 5, wherein the bypass cooling oil circuit further comprises a fourth relief valve, an input end of the fourth relief valve is connected between the oil inlet stop valve and the cooler, and an output end of the fourth relief valve is communicated with the oil tank.
7. The hydraulic system oil circuit cooling structure according to claim 6, further comprising an oil pressure monitoring sensor connected to the oil inlet shutoff valve.
8. The hydraulic system oil circuit cooling structure as claimed in claim 7, wherein the main motor-pump group comprises a main servo motor and a main pump, and the main servo motor is connected with the main pump.
9. The hydraulic system oil circuit cooling structure according to claim 8, wherein the first slave motor-pump group comprises a first slave servo motor and a first slave pump, and the first slave servo motor and the first slave pump are connected;
the second slave motor-pump group comprises a second slave servo motor and a second slave pump, and the second slave servo motor is connected with the second slave pump.
10. The oil circuit cooling structure of the hydraulic system as recited in claim 9, wherein a shuttle valve is superimposed on a valve cover of the one-way stop valve to prevent high-pressure oil of the hydraulic system from reversely flowing back to a confluence of the first slave motor-pump set and the second slave motor-pump set, thereby realizing a one-way stop function of the one-way stop valve.
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| CN202120470939.XU CN215293098U (en) | 2021-03-04 | 2021-03-04 | Hydraulic system oil circuit cooling structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113153865A (en) * | 2021-03-04 | 2021-07-23 | 宁波保税区海天智胜金属成型设备有限公司 | Hydraulic system oil circuit cooling structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153865A (en) * | 2021-03-04 | 2021-07-23 | 宁波保税区海天智胜金属成型设备有限公司 | Hydraulic system oil circuit cooling structure |
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