CN110878782A - Oil supplementing device for hydraulic mechanism - Google Patents
Oil supplementing device for hydraulic mechanism Download PDFInfo
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- CN110878782A CN110878782A CN201911096102.7A CN201911096102A CN110878782A CN 110878782 A CN110878782 A CN 110878782A CN 201911096102 A CN201911096102 A CN 201911096102A CN 110878782 A CN110878782 A CN 110878782A
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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
- F15B21/005—Filling or draining of fluid systems
Abstract
The invention relates to an oil supplementing device for a hydraulic mechanism, wherein the hydraulic mechanism is provided with an oil inlet, and the oil supplementing device comprises an oil storage tank, a first valve, an oil supplementing pipeline structure, a vacuum breaking structure and a vacuum structure. After the oil supplementing device is connected with the upper hydraulic mechanism, the vacuum structure discharges internal air, the communication between the oil storage pipe and the connecting pipe is disconnected, the oil outlet end is communicated with the oil inlet end, the inner cavity of the oil storage cavity is communicated with the outside, the external air enters the top space of the inner cavity of the oil storage tank, hydraulic oil in the oil storage tank is pressed into the hydraulic mechanism, and the first valve is closed when the quantity of the pressed hydraulic oil is enough. The hydraulic pressure mechanism can mend oil when the operation, can not lead to the risk of hydraulic pressure mechanism pressure emergency drop, need not to mend oil again after stopping transporting whole electric power system moreover, has reduced the loss effectively, compares simultaneously in traditional stopping transporting after, in oil inlet department evacuation, passes through the mode that hydraulic oil suction accomplished the oiling from the oil drain port through the vacuum, and this mends oily device consuming time shorter, mends oily efficiency height.
Description
Technical Field
The invention relates to the technical field of circuit breaker hydraulic oil supplementing equipment, in particular to an oil supplementing device for a hydraulic mechanism.
Background
When a hydraulic mechanism of the circuit breaker operates, hydraulic oil may leak out, and the leakage of the hydraulic oil causes the problem that the hydraulic oil in the hydraulic mechanism is insufficient, so that the hydraulic mechanism needs to be supplemented with the hydraulic oil. However, in the existing hydraulic mechanism, the operation of the whole power system needs to be stopped first, and then the oil supplementing operation is performed, so that the economic loss caused by the system shutdown is large.
Disclosure of Invention
Therefore, it is necessary to provide an oil replenishing device for a hydraulic mechanism, which can replenish hydraulic oil during operation of the hydraulic mechanism and avoid great economic loss due to shutdown of the system, in order to solve the problem that the system is required to be shut down for replenishing hydraulic oil in the existing hydraulic mechanism and great loss is caused.
An oil supply device for a hydraulic unit having an oil inlet, the oil supply device comprising:
an oil storage tank;
the first valve is used for connecting the oil inlet of the hydraulic mechanism;
the oil supplementing pipeline structure is provided with an oil outlet end, an oil inlet end and an exhaust end, and the oil inlet end and the exhaust end can be respectively communicated with the oil outlet end in a controlled manner; the oil outlet end is communicated with the first valve, the oil inlet end is connected to the bottom of the inner cavity of the oil storage tank, and the communication end is connected to the top of the inner cavity of the oil storage tank;
the vacuum breaking structure is communicated with the top of the inner cavity of the oil storage tank and is used for keeping or disconnecting the communication between the inner cavity of the oil storage tank and the outside; and
and the vacuum structure is connected with the oil supplementing pipeline structure and is used for discharging air in the oil supplementing pipeline structure.
Through setting up foretell oil supplementing device, connect the hydraulic pressure mechanism on the oil supplementing device after, first valve is opened, breaks off the intercommunication of batch oil tank inner chamber and external through broken vacuum structure earlier, then will go out oil end and intercommunication end intercommunication to draw the air in the oil supplementing pipeline structure of discharge through vacuum structure, because first valve is opened, consequently the air back of discharging can be regarded as being in the vacuum state in oil supplementing pipeline structure and the hydraulic pressure mechanism all.
The action of the vacuum structure is stopped after air is discharged, then the communication between the oil storage pipe and the connecting pipe is disconnected, the oil outlet end is communicated with the oil inlet end, the oil storage cavity and the outside are communicated through the vacuum breaking structure, the outside air enters the top space of the inner cavity of the oil storage tank, the hydraulic oil in the oil storage tank is pressed into the hydraulic mechanism through the oil supplementing pipeline structure, and the first valve is closed when the pressed hydraulic oil is enough in quantity, so that oil supplementing to the hydraulic mechanism can be realized.
So, hydraulic pressure mechanism can mend oil when the operation, can not lead to the risk of hydraulic pressure mechanism pressure emergency drop, need not to mend oil again after stopping transport whole electric power system moreover, has reduced economic loss effectively, compares simultaneously in traditional stopping transport after, in oil inlet department evacuation, from the oil drain port through the mode that the vacuum sucks hydraulic oil completion oiling, should mend oily device consuming time shorter, mend oily efficiency higher.
In one embodiment, the oil compensating pipeline structure comprises a first communication state and a second communication state;
when the oil supplementing pipeline structure is in the first communication state, the oil outlet end is communicated with the communication end;
and when the oil supplementing pipeline structure is in the second communication state, the oil outlet end is communicated with the oil inlet end.
In one embodiment, the oil supply pipe structure includes a second valve disposed between the oil outlet end and the communication end for controlling the maintenance and the disconnection of the communication between the oil outlet end and the communication end.
In one embodiment, the oil supply pipeline structure further comprises a third valve disposed between the oil outlet end and the oil inlet end for controlling the connection between the oil outlet end and the oil inlet end.
In one embodiment, the oil supply pipeline structure further comprises an oil outlet pipe, an oil inlet pipe and a connecting pipe, wherein one end of the oil outlet pipe is connected with the first valve;
one end of the oil inlet pipe is connected with one end of the oil outlet pipe, which is far away from the first valve, and the other end of the oil inlet pipe is connected with the bottom of the oil storage tank;
one end of the connecting pipe is connected with one end of the oil outlet pipe, which is far away from the first valve, and the other end of the connecting pipe is connected with the top of the oil storage tank;
the second valve is arranged on the connecting pipe and used for controlling the connection and disconnection of the connecting pipe, and the third valve is arranged on the oil inlet pipe and used for controlling the connection and disconnection of the oil inlet pipe.
In one embodiment, the top of the oil storage tank is provided with an air inlet communicated with the inner cavity of the oil storage tank, and the vacuum breaking structure is communicated with the air inlet.
In one embodiment, the vacuum breaking structure comprises an air inlet pipe and an air inlet valve, the air inlet pipe is connected to the air inlet of the oil storage cavity, and the air inlet valve is arranged on the air inlet pipe and used for controlling the on-off of the air inlet pipe.
In one embodiment, the oil supplementing device further comprises a pressure detecting structure, and the pressure detecting structure is connected with the oil supplementing pipeline structure and is used for detecting the internal pressure of the oil supplementing pipeline structure.
In one embodiment, the pressure detection structure includes a vent pipe, a vent valve and a pressure gauge, the vent pipe is connected between the oil supply pipeline structure and the pressure gauge, the vent valve is disposed on the vent pipe and used for controlling on-off of the vent pipe, and the pressure gauge is used for detecting and visually displaying internal pressure of the oil supply pipeline structure when the vent valve is connected.
In one embodiment, the vacuum structure comprises an exhaust pipe, an exhaust valve and a vacuum pump, wherein one end of the exhaust pipe is connected with the oil supplementing pipeline structure, the exhaust valve is arranged on the exhaust pipe and used for controlling the on-off of the exhaust pipe, and the vacuum pump is connected to the other end of the exhaust pipe, which is far away from the oil supplementing pipeline structure.
Drawings
Fig. 1 is a schematic diagram of an oil supply device for a hydraulic unit according to an embodiment of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, an oil compensating device 100 for a hydraulic mechanism 200 according to an embodiment of the present invention includes a first valve 10, an oil compensating pipe structure, a vacuum structure 30, an oil storage tank 40, and a vacuum breaking structure 50.
The hydraulic mechanism 200 has an oil inlet. The first valve 10 is used to connect to an oil inlet of the hydraulic machine 200.
The oil supplementing pipeline structure is provided with an oil outlet end, an oil inlet end and a communication end, the oil outlet end is communicated with the first valve 10, the oil inlet end and the communication end can be respectively communicated with the oil outlet end in a controlled manner, the oil inlet end is connected to the bottom of the inner cavity of the oil storage tank 40, and the communication end is connected to the top communication end of the inner cavity of the oil storage tank 40.
The vacuum breaking structure 50 is connected to the top of the oil storage tank 40 and is used for maintaining or disconnecting the communication between the inner cavity of the oil storage tank 40 and the outside.
And the vacuum structure 30 is connected with the oil supplementing pipeline structure and used for extracting and discharging air in the oil supplementing pipeline structure.
Specifically, the oil supplementing pipeline structure comprises a first communication state and a second communication state, and when the oil supplementing pipeline structure is in the first communication state, the oil outlet end is communicated with the communication end; when the oil supplementing pipeline structure is in a second communication state, the oil outlet end is communicated with the oil inlet end.
Through setting up foretell oil supply device, connect the oil supply device and connect hydraulic pressure mechanism 200 back, first valve 10 is opened, breaks off the intercommunication of batch oil tank 40 inner chamber and external world through broken vacuum structure 50 earlier, then with oil outlet end and intercommunication end intercommunication to draw the air in the oil supply pipeline structure of discharge through vacuum structure 30, because first valve 10 is opened, consequently the air back of discharge oil supply pipeline structure and hydraulic pressure mechanism 200 in all can regard as being in the vacuum state.
The action of the vacuum structure 30 is stopped after the air is exhausted, then the communication between the oil storage pipe and the connecting pipe 26 is cut off, the oil outlet end is communicated with the oil inlet end, the inner cavity of the oil storage cavity is communicated with the outside through the vacuum breaking structure 50, the outside air enters the top space of the inner cavity of the oil storage tank 40, meanwhile, the hydraulic oil in the oil storage tank 40 is pressed into the hydraulic mechanism 200 through the oil supplementing pipeline structure, and the first valve 10 is closed when the pressed hydraulic oil is enough in quantity, so that the oil supplementing to the hydraulic mechanism 200 can be realized.
So, hydraulic pressure mechanism 200 can mend oil when the operation, can not lead to the risk of hydraulic pressure mechanism 200 pressure emergency drop, need not to mend oil again after stopping transport whole electric power system moreover, has reduced the loss effectively, compares simultaneously in traditional stopping transport after, in oil inlet department evacuation, from the oil drain port through the mode that the vacuum was inhaled hydraulic oil and is accomplished the oiling, should mend oily device consuming time shorter, mend oily efficiency higher.
It should be noted that, the oil inlet and the oil outlet are described when the hydraulic oil in the hydraulic mechanism 200 needs to be replaced, that is, the internal hydraulic oil needs to be drained, and the oil inlet is used for injecting the hydraulic oil. And to traditional oil supply mode, oil drain port department piles up has hydraulic oil, can't the evacuation, consequently is through taking out the vacuum in oil inlet department, absorbs hydraulic oil from oil drain port department.
Further, the amount of hydraulic oil initially stored in the oil reservoir tank 40 should be able to complete at least one oil replenishment of the hydraulic mechanism 200.
In some embodiments, the oil supply pipeline structure further includes an oil outlet pipe 22, an oil inlet pipe 24, and a connecting pipe 26, wherein one end of the oil outlet pipe 22 is connected to the first valve 10; one end of the oil inlet pipe 24 is connected with one end of the oil outlet pipe 22 far away from the first valve 10, and the other end is connected with the bottom of the oil storage tank 40; the connection pipe 26 is connected at one end to the oil line 22 remote from the first valve 10 and at the other end to the top of the oil reservoir 40.
In other words, the oil outlet end is located at the end of the oil outlet pipe 22 connected to the first valve 10, the communication end is located at the end of the connection pipe 26 connected to the top of the oil storage tank 40, and the oil inlet end is located at the end of the oil inlet pipe 24 connected to the bottom of the oil storage tank 40.
In some embodiments, the oil supply line structure includes a second valve 28, the second valve 28 being disposed between the oil outlet end and the communication end for controlling the maintenance and disconnection of communication between the oil outlet end and the communication end. Further, a second valve 28 is provided in the connection pipe 26 for controlling on/off of the connection pipe 26.
It should be explained that the valve for controlling on-off is arranged on a pipeline to control on-off of the pipeline, which is a relatively conventional technical means, and this manner can also be regarded as that two ends of a valve are respectively connected with two pipelines, but the two pipelines have the same function, and therefore, the valve can be named as a pipeline.
In some embodiments, the oil supply line structure further comprises a third valve 29, the third valve 29 being disposed between the oil outlet end and the oil inlet end for controlling the holding and breaking of communication between the oil outlet end and the oil inlet end. Further, a third valve 29 is provided in the oil inlet pipe 24 for controlling the opening and closing of the oil inlet pipe 24.
That is, when the oil replenishment piping structure is in the first communication state, the second valve 28 controls the connection pipe 26 to remain in communication, and the third valve 29 controls the oil feed pipe 24 to be disconnected from communication; and when the oil compensating pipe structure is in the second communication state, the second valve 28 controls the connecting pipe 26 to be disconnected from communication, and the third valve 29 controls the oil inlet pipe 24 to be communicated.
In addition, it should be noted that, in the above embodiment, during the vacuum pumping, since the oil supply pipeline structure is communicated with the space above the inner cavity of the oil storage tank 40, the air above the inner cavity of the oil storage tank 40 is also pumped and discharged, so as to ensure that the whole hydraulic oil in the oil storage tank 40 is in a vacuum space.
If the air above the inner cavity of the oil storage tank 40 is not pumped away, the hydraulic oil in the oil storage tank 40 is always in the space with normal atmospheric pressure during vacuum pumping, which causes the air to be doped in the hydraulic oil finally entering the hydraulic mechanism 200, so that the quality of the hydraulic oil is low. If the space above the oil reservoir 40 is evacuated in advance so that the hydraulic oil is present in a vacuum environment, it is ensured that the air in the hydraulic oil is discharged first, thereby improving the quality of the hydraulic oil subsequently fed into the hydraulic mechanism 200.
In some embodiments, the top of the oil storage tank 40 is provided with an air inlet communicated with the inner cavity of the oil storage tank 40, and the vacuum breaking structure 50 is communicated with the air inlet, so that the communication between the inner cavity of the oil storage tank 40 and the outside can be maintained and disconnected through the vacuum breaking structure 50.
Further, the vacuum breaking structure 50 includes an air inlet pipe 52 and an air inlet valve 54, the air inlet pipe 52 is connected to an air inlet of the oil storage chamber, and the air inlet valve 54 is disposed on the air inlet pipe 52 and is used for controlling on/off of the air inlet pipe 52. Of course, the air inlet pipe 52 is communicated with the inner cavity of the oil storage tank 40 through an air inlet arranged at the top of the oil storage tank 40. Similarly, the connecting pipe 26 may also be a vent hole opened at the top of the oil storage tank 40, and the connecting pipe 26 is connected to the vent hole of the oil storage tank 40 to communicate the connecting pipe 26 with the inner cavity of the oil storage tank 40.
In some embodiments, the oil storage tank 40 includes a tank body 42 and a cover 44, the tank body 42 has an inner cavity and an opening located at the top of the tank body 42 and communicated with the inner cavity, the cover 44 is hermetically connected to the opening of the tank body 42, meanwhile, both the air vent and the air inlet are opened on the cover 44, the oil inlet pipe 24 is connected to the bottom of the tank body 42, or an oil outlet is opened on the tank body 42, and the oil inlet pipe 24 is connected to the oil outlet of the tank body 42, so as to communicate the oil inlet pipe 24 with the inner cavity of the oil storage tank 40.
In some embodiments, the vacuum structure 30 includes an exhaust pipe 32, an exhaust valve 34 and a vacuum pump 36, wherein one end of the exhaust pipe 32 is connected to the oil supplementing pipe structure, the exhaust valve 34 is disposed on the exhaust pipe 32 for controlling the on/off of the exhaust pipe 32, and the vacuum pump 36 is connected to the other end of the exhaust pipe 32 away from the oil supplementing pipe structure.
In some embodiments, the oil compensation device further includes a pressure detection structure 60, and the pressure detection structure 60 is connected to the oil compensation pipeline structure and is used for detecting the internal pressure of the oil compensation pipeline structure.
Further, the pressure detecting structure 60 includes a vent pipe 62, a vent valve 64 and a pressure gauge 66, the vent pipe 62 is connected between the oil replenishing pipe structure and the pressure gauge 66, the vent valve 64 is disposed on the vent pipe 62 for controlling the on-off of the vent pipe 62, and the pressure gauge 66 is used for detecting and visually displaying the internal pressure of the oil replenishing pipe structure when the vent valve 64 is communicated.
In general, in order to ensure the vacuum degree in the hydraulic mechanism 200 and the oil supply pipe structure, the internal pressure of the hydraulic mechanism 200 and the oil supply pipe structure needs to be reduced to 100pa or less, and the pressure gauge 66 is provided to ensure that the vacuum formed by the air extracted by the vacuum structure 30 meets the requirement, thereby facilitating the operation of an operator.
A method for using the oil supply device is described herein based on the oil supply device, the method including the steps of:
s110, connecting the first valve 10 to the oil inlet, and simultaneously opening the first valve 10.
Specifically, after the first valve 10 is connected to the oil inlet, it is necessary to add sufficient hydraulic oil to the oil storage tank 40. It should be explained that this operation is understood to mean that all other valves in the oil replenishing device are closed, and only the first valve 10 is opened, that is, the vacuum breaking structure 50 disconnects the cavity of the oil reservoir 40 from the outside.
And S120, communicating the oil outlet end with the communication end.
Specifically, the intake valve 54 and the third valve 29 are kept closed, and then the other valves are opened, while the intake pipe 52 and the intake pipe 24 are blocked.
S130, the air in the oil supply pipe structure is extracted and discharged through the vacuum structure 30.
Further, since the vacuum pump 36 is operated and other valves except the intake valve 54 and the third valve 29 are opened at this time, the vacuum pump 36 can draw and discharge air above the hydraulic unit 200, the oil outlet pipe 22, the vent pipe 62, the connection pipe 26, and the oil storage tank 40, and since the vent pipe 62 is connected to the pressure gauge 66, the pressure gauge 66 can directly measure the internal pressures of the oil replenishing device and the hydraulic unit 200.
Specifically, when the internal pressure value measured by the pressure gauge 66 is 100pa or less, the operation of the vacuum pump 36 may be stopped to ensure the vacuum degree in the oil compensating device and the hydraulic mechanism 200. Meanwhile, the exhaust valve 34 needs to be closed and observed for a period of time, and if the value of the pressure gauge 66 is not changed or the changed value is within the allowable range during the observation period, the sealing performance of the oil supplementing device is good, and the subsequent steps can be carried out. If the value of the pressure gauge 66 changes greatly, the sealing performance of the oil supplementing device is poor, the connection of each pipeline needs to be checked or performed again, and then the steps are repeated.
And S140, disconnecting the oil outlet end from the communication end.
Further, the second valve 28 is closed, i.e., the communication of the connection pipe 26 is cut off. Specifically, the vent valve 64 is also closed while the second valve 28 is opened to prevent the entry of hydraulic oil from the vent pipe 62 into the pressure gauge 66 during subsequent replenishment of hydraulic oil. The exhaust valve 34 is closed in the above step, so as to prevent the internal space of the oil supply device and the hydraulic mechanism 200 from being vacuumized and then communicated with the outside through the exhaust pipe 32 and the vacuum pump 36, thereby maintaining the vacuum.
And S150, communicating the oil outlet end with the oil inlet end, and communicating the inner cavity of the oil storage tank 40 with the outside through the vacuum breaking structure 50.
Specifically, the third valve 29 is opened, and the intake valve 54 is also opened, so that the outside air enters the head space in the reservoir tank 40, and then the hydraulic oil in the reservoir tank 40 is pressed into the hydraulic mechanism 200 through the oil inlet pipe 24 and the oil outlet pipe 22 by the atmospheric pressure, thereby achieving the oil supply to the hydraulic mechanism 200.
S160, the first valve 10 is closed.
Specifically, when the hydraulic oil input into the hydraulic mechanism 200 reaches a requirement, that is, the oil supplement operation is completed, the first valve 10 may be closed, and then the oil supplement device may be detached from the hydraulic mechanism 200.
It should be noted that, when the oil supplementing device is detached, the first valve 10 may be retained on the hydraulic mechanism 200, and the first valve 10 may be kept in a closed state during normal operation, and when the oil supplementing device needs to be repaired or the hydraulic oil needs to be replaced, the first valve 10 may be opened and the device may be connected to the first valve 10, which is more convenient to operate.
By adopting the use method of the oil supplementing device, the vacuum pump 36 firstly vacuumizes the oil supplementing device and the hydraulic mechanism 200, and then opens the air inlet valve 54 to press hydraulic oil into the hydraulic mechanism 200 through atmospheric pressure, so that oil can be directly supplemented when the hydraulic mechanism 200 runs, the hydraulic mechanism 200 does not need to be stopped, and the large loss caused by the stop of a power system is avoided. Meanwhile, the hydraulic oil is pre-pumped to be in a vacuum environment, so that the quality of the hydraulic oil subsequently input into the hydraulic mechanism 200 is ensured.
Compared with the prior art, the oil supplementing device for the hydraulic mechanism and the using method thereof provided by the invention at least have the following advantages:
1) the oil can be directly supplemented to the hydraulic mechanism on line, so that the loss caused by the shutdown of a power system is avoided;
2) the quality of the hydraulic oil input into the hydraulic mechanism can be ensured.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An oil supply device for a hydraulic unit having an oil inlet, the oil supply device comprising:
an oil storage tank;
the first valve is used for connecting the oil inlet of the hydraulic mechanism;
the oil supplementing pipeline structure is provided with an oil outlet end, an oil inlet end and a communication end, and the oil inlet end and the communication end can be respectively communicated with the oil outlet end in a controlled manner; the oil outlet end is communicated with the first valve, the oil inlet end is connected to the bottom of the inner cavity of the oil storage tank, and the communication end is connected to the top communication end of the inner cavity of the oil storage tank;
the vacuum breaking structure is communicated with the top of the inner cavity of the oil storage tank and is used for keeping or disconnecting the communication between the inner cavity of the oil storage tank and the outside; and
and the vacuum structure is connected with the oil supplementing pipeline structure and is used for discharging air in the oil supplementing pipeline structure.
2. The oil supply device for a hydraulic mechanism according to claim 1, wherein the oil supply piping structure includes a first communication state and a second communication state;
when the oil supplementing pipeline structure is in the first communication state, the oil outlet end is communicated with the communication end;
and when the oil supplementing pipeline structure is in the second communication state, the oil outlet end is communicated with the oil inlet end.
3. The oil supply device for a hydraulic unit according to claim 1, wherein the oil supply piping structure includes a second valve provided between the oil outlet port and the communication port for controlling the maintenance and the disconnection of the communication between the oil outlet port and the communication port.
4. The oil supply device for a hydraulic unit according to claim 3, wherein the oil supply piping structure further comprises a third valve provided between the oil outlet port and the oil inlet port for controlling the holding and breaking of communication between the oil outlet port and the oil inlet port.
5. The oil supply device for the hydraulic unit according to claim 4, wherein the oil supply pipeline structure further comprises an oil outlet pipe, an oil inlet pipe and a connecting pipe, and one end of the oil outlet pipe is connected to the first valve;
one end of the oil inlet pipe is connected with one end of the oil outlet pipe, which is far away from the first valve, and the other end of the oil inlet pipe is connected with the bottom of the oil storage tank;
one end of the connecting pipe is connected with one end of the oil outlet pipe, which is far away from the first valve, and the other end of the connecting pipe is connected with the top of the oil storage tank;
the second valve is arranged on the connecting pipe and used for controlling the connection and disconnection of the connecting pipe, and the third valve is arranged on the oil inlet pipe and used for controlling the connection and disconnection of the oil inlet pipe.
6. The oil feeding device for the hydraulic mechanism according to claim 1, wherein an air inlet communicated with the inner cavity of the oil storage tank is formed in the top of the oil storage tank, and the vacuum breaking structure is communicated with the air inlet.
7. The oil supplementing device for the hydraulic mechanism according to claim 6, wherein the vacuum breaking structure comprises an air inlet pipe and an air inlet valve, the air inlet pipe is connected to the air inlet of the oil storage cavity, and the air inlet valve is arranged on the air inlet pipe and used for controlling the on-off of the air inlet pipe.
8. The oil supply device for a hydraulic mechanism according to claim 1, further comprising a pressure detection structure connected to the oil supply piping structure for detecting an internal pressure of the oil supply piping structure.
9. The oil replenishing device for the hydraulic mechanism according to claim 8, wherein the pressure detecting structure comprises a vent pipe, a vent valve and a pressure gauge, the vent pipe is connected between the oil replenishing pipeline structure and the pressure gauge, the vent valve is arranged on the vent pipe and used for controlling the on-off of the vent pipe, and the pressure gauge is used for detecting and visually displaying the internal pressure of the oil replenishing pipeline structure when the vent valve is connected.
10. The oil supplementing device for the hydraulic mechanism according to claim 1, wherein the vacuum structure comprises an exhaust pipe, an exhaust valve and a vacuum pump, one end of the exhaust pipe is connected with the oil supplementing pipeline structure, the exhaust valve is arranged on the exhaust pipe and used for controlling the on-off of the exhaust pipe, and the vacuum pump is connected to the other end of the exhaust pipe, which is far away from the oil supplementing pipeline structure.
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| CN201911096102.7A CN110878782A (en) | 2019-11-11 | 2019-11-11 | Oil supplementing device for hydraulic mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889360A (en) * | 2021-09-13 | 2022-01-04 | 国家电网有限公司 | High-voltage circuit breaker liquid oil injection device and high-voltage circuit breaker liquid oil injection method |
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| CN102817883A (en) * | 2012-09-11 | 2012-12-12 | 浙江大学 | Multi-functional special oiling device for deep-sea hydraulic system |
| CN203095597U (en) * | 2013-01-15 | 2013-07-31 | 中国石油天然气集团公司 | Vacuum oiling system for well-logging-during-drilling instrument |
| CN205858316U (en) * | 2016-07-08 | 2017-01-04 | 中石化石油工程技术服务有限公司 | Oil well logging instrument vacuum takes out oiling device |
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| CN113889360A (en) * | 2021-09-13 | 2022-01-04 | 国家电网有限公司 | High-voltage circuit breaker liquid oil injection device and high-voltage circuit breaker liquid oil injection method |
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