Hydraulic station emergency oil return control device

Abstract

The utility model relates to hydraulic control system technical field especially relates to a kind of hydraulic station emergency oil return control device, including hydraulic station, the hydraulic station is the assembly main body of this control device;Still including oil pipe and flange plate etc.;The oil outlet interface of hydraulic pump on the hydraulic station is communicated with oil pipe, the outlet end of the oil pipe is butt jointed with three-way pipe one, the three-way pipe one is uniformly fixed with flange plate at three-way pipe mouth, the butt joint of the oil pipe is also fixed with flange plate, the disc body of the flange plate is uniformly provided with multiple bolt holes. The utility model can automatically trigger emergency oil return program when detecting system pressure anomaly by setting solenoid valve and pressure sensor, rapidly guide hydraulic oil back to oil tank, and set filter piece including installation jar and filter core on oil return pipe two, so that backflow pressure relief is considered, and the hydraulic oil backflowing to oil tank can be filtered appropriately.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic control system technology, and in particular to an emergency return oil control device for a hydraulic station. Background Technology

[0002] With the increasing automation of industry and the growing emphasis on production safety, hydraulic systems are being used more and more widely, which also places higher demands on their safety and reliability. Especially in heavy industry, aviation, shipbuilding, and construction machinery, the complex and variable working environments present greater challenges to hydraulic systems, making the need for rapid response mechanisms in emergency situations even more urgent. Emergency return oil control devices have been developed in this context, not only improving the safety of hydraulic systems but also reducing downtime and maintenance costs caused by malfunctions.

[0003] Traditional methods typically rely on a single-loop design. The problem with this approach is that it cannot simultaneously address both the pressure relief rate and the cleanliness of the hydraulic fluid. Rapid pressure relief may affect the cleanliness of the fluid. Furthermore, while mechanical triggering mechanisms can activate protection mechanisms when an anomaly is detected, they are overly sensitive to vibration and prone to malfunctions, increasing the risk of unnecessary downtime. Moreover, once these protection mechanisms are triggered, reset operations usually require manual intervention, which not only increases labor costs but also inevitably prolongs downtime and affects production efficiency. Therefore, it is necessary to design an emergency return oil control device for hydraulic stations to solve the above problems. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides an emergency return oil control device for a hydraulic station.

[0005] The technical solution is as follows: An emergency return oil control device for a hydraulic station includes a hydraulic station, which is the main assembly body of this control device; it also includes an oil outlet pipe, a flange, a fixing bolt, a tee pipe one, a tee pipe two, a solenoid valve, an oil return pipe one, and an oil return pipe two. The oil outlet pipe is connected to the oil outlet interface of the hydraulic pump on the hydraulic station. The outlet end of the oil outlet pipe is connected to the tee pipe one. Flanges are fixedly connected to the three ends of the tee pipe one. A flange is also fixedly connected to the connection point of the oil outlet pipe. Multiple bolt holes are provided around the circumference of the flange. The oil outlet pipe and the tee pipe one are securely connected by fixing bolts screwed into the flange. The other side of the straight inlet of the three-way pipe is the hydraulic oil outlet connector. The pipe perpendicular to the inlet of the three-way pipe is connected to the two-way pipe. The three-way pipe and the three-way pipe are also firmly connected by a flange. A solenoid valve for controlling the switch is installed on the pipe connecting the three-way pipe and the three-way pipe. The straight side of the three-way pipe is connected to the oil tank of the hydraulic station through the return oil pipe. The other straight side of the three-way pipe is connected to the oil tank of the hydraulic station through the return oil pipe. A filter element is connected in series on the return oil pipe. The filter element is used to filter the hydraulic oil returning through the return oil pipe.

[0006] As an improvement to the above solution, a pressure sensor is also included. A pressure sensor is installed on the pipeline of the three-way pipe. The pressure-sensing diaphragm of the pressure sensor is located inside the pipeline of the three-way pipe. The pressure sensor has a built-in controller and is electrically connected to a solenoid valve. The pressure sensor monitors the pressure of the hydraulic oil in the three-way pipe in real time. When the pressure sensor detects an abnormal pressure in the pipeline, it can promptly control the solenoid valve to open through the built-in controller, thereby controlling the hydraulic oil to flow back to the oil tank of the hydraulic station in an emergency.

[0007] As an improvement to the above solution, a sealing ring is provided at the pipe opening of the flange connection. The sealing ring is used to improve the sealing performance of the flange connection and ensure the sealing performance of the hydraulic oil pipeline.

[0008] As an improvement to the above solution, the filter element includes a mounting tank and a filter element. The mounting tank is connected in series on the return oil pipe two. The filter element is installed inside the mounting tank and is used to filter the hydraulic oil flowing back through the return oil pipe two.

[0009] As an improvement to the above solution, the filter element connection interface is provided with an installation thread. The filter element is detachably and threadedly installed at the installation tank interface of the return oil pipe. The installation tank has a disassembly port on its side wall. The installation thread allows the filter element to be easily disassembled and installed in the installation tank, improving the cleaning and maintenance efficiency of the filter element.

[0010] As an improvement to the above solution, an observation window is fixedly installed on the disassembly port of the installation tank by bolts. A sealing gasket is provided at the joint between the observation window and the installation tank. The observation window is used to observe the usage of the filter element and facilitates timely replacement of the filter element by opening the observation window.

[0011] The beneficial effects are: 1. By setting up a solenoid valve and a pressure sensor, this utility model can automatically trigger an emergency oil return procedure when an abnormal system pressure is detected, and quickly guide the hydraulic oil back to the oil tank. A filter element containing a mounting tank and a filter element is set on the second oil return pipe, so that the hydraulic oil returning to the oil tank can undergo appropriate filtration treatment while relieving pressure during backflow.

[0012] 2. This utility model utilizes the design of three-way pipe one and three-way pipe two to allow hydraulic oil to flow back to the oil tank under pressure, which effectively improves the pressure relief speed of the hydraulic system in emergency situations and reduces the risk of excessive pressure when hydraulic oil flows back in an emergency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a schematic diagram of the components of this utility model, including the oil outlet pipe, tee pipe one, tee pipe two, and flange.

[0015] Figure 3 This is a diagram showing the connection relationship between the two-way pipe, the first oil return pipe, and the second oil return pipe of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the filter element of this utility model.

[0017] Labels in the diagram: 1-Hydraulic station, 2-Outlet pipe, 3-Flange, 4-Fixing bolt, 5-Sealing ring, 6-Tee pipe one, 61-Tee pipe two, 7-Solenoid valve, 8-Return pipe one, 9-Return pipe two, 91-Installation tank, 10-Filter element, 101-Installation thread, 11-Observation window, 12-Pressure sensor. Detailed Implementation

[0018] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0019] An emergency return oil control device for a hydraulic station, such as Figures 1-4As shown, the device includes a hydraulic station 1, which is the main assembly of this control unit; it also includes an oil outlet pipe 2, a flange 3, a fixing bolt 4, a tee pipe 6, a tee pipe 61, a solenoid valve 7, a return pipe 8, and a return pipe 9. The oil outlet port of the hydraulic pump on the hydraulic station 1 is connected to the oil outlet pipe 2. The outlet end of the oil outlet pipe 2 is connected to the tee pipe 6. The three ports of the tee pipe 6 are all fixedly connected to the flange 3. The connection port of the oil outlet pipe 2 is also fixedly connected to the flange 3. The flange 3 has multiple bolt holes around its circumference. The oil outlet pipe 2 and the tee pipe 6 are securely connected by screwing the fixing bolt 4 into the flange 3. The other port of the tee pipe 6 in the direction of the inlet pipe is the hydraulic oil outlet connector. The pipe of the tee pipe 6 perpendicular to the inlet pipe is connected to the tee pipe 61. The tee pipe 6 and the tee pipe 61 are also connected by the flange 3. A flange is securely connected. A solenoid valve 7 for controlling the switch is installed on the pipeline connecting T-pipe 1 (6) to T-pipe 2 (61). The straight side of T-pipe 2 (61) is connected to the oil tank of hydraulic station 1 via return oil pipe 1 (8), and the other straight side of T-pipe 2 (61) is connected to the oil tank of hydraulic station 1 via return oil pipe 2 (9). A filter element is connected in series on return oil pipe 2 (9) to filter the hydraulic oil returning through return oil pipe 2 (9). When hydraulic station 1 needs emergency oil return, the solenoid valve 7 is opened by a preset program, allowing the hydraulic oil supplied by hydraulic station 1 to the power actuators to return urgently through T-pipe 1 (6) and T-pipe 2 (61). During the return flow, the return oil pipes 1 (8) and 2 (9) in T-pipe 2 (61) divide the pressure and flow back to the oil tank of hydraulic station 1. In conjunction with the filter element, some of the hydraulic oil is filtered, improving the efficiency of emergency oil return and pressure relief of hydraulic station 1.

[0020] like Figure 2 As shown, it also includes a pressure sensor 12. The pressure sensor 12 is installed on the pipeline of the three-way pipe 6. The pressure-sensing diaphragm of the pressure sensor 12 is located inside the pipeline of the three-way pipe 6. The pressure sensor 12 has a built-in controller and is electrically connected to the solenoid valve 7. The pressure sensor 12 monitors the pressure of the hydraulic oil in the three-way pipe 6 in real time. When the pressure sensor 12 detects an abnormal pressure in the pipeline, it can control the solenoid valve 7 to open in time through the built-in controller, thereby controlling the hydraulic oil to flow back to the oil tank of the hydraulic station 1 in an emergency.

[0021] like Figure 2 As shown, sealing rings 5 ​​are provided at the pipe openings of the flange 3 joint. The sealing rings 5 ​​are used to improve the sealing performance of the flange 3 joint and ensure the sealing performance of the hydraulic oil pipeline.

[0022] like Figure 2 and Figure 3As shown, the filter element includes a mounting tank 91 and a filter element 10. The mounting tank 91 is connected in series on the return oil pipe 2 9. The filter element 10 is installed inside the mounting tank 91. The filter element 10 is used to filter the hydraulic oil flowing back through the return oil pipe 2 9. The interface of the filter element 10 is provided with a mounting thread 101. The filter element 10 is detachably threaded and installed at the interface of the mounting tank 91 of the return oil pipe 2 9. The side wall of the mounting tank 91 is provided with a disassembly port. The mounting thread 101 allows the filter element 10 to be easily disassembled and installed in the mounting tank 91, improving the cleaning and maintenance efficiency of the filter element 10.

[0023] like Figure 2 and Figure 3 As shown, an observation window 11 is fixedly installed on the disassembly port of the installation tank 91 by bolts. A sealing gasket is provided at the joint between the observation window 11 and the installation tank 91. The observation window 11 is used to observe the usage of the filter element 10 and facilitates timely opening of the observation window 11 to replace the filter element 10.

[0024] When the hydraulic system is running normally, the hydraulic pump delivers hydraulic oil to the actuator (such as a cylinder or motor) through the oil outlet pipe 2. At this time, the solenoid valve 7 between the three-way pipe 1 6 and the three-way pipe 2 61 is in the closed state, the return oil line is disconnected, and the hydraulic oil circulates according to the preset path. When the system requires emergency oil return or experiences abnormal pressure (such as sudden failure of the actuator or a sudden increase in pipeline pressure), the pressure sensor 12 monitors the oil pressure in the three-way pipe 6 in real time. If overpressure or a preset emergency signal is detected, its built-in controller immediately triggers the solenoid valve 7 to open. At this time, the hydraulic oil enters the two-way pipe 61 through the branch port of the three-way pipe 6, forming two parallel oil return paths: part of the hydraulic oil flows directly back to the oil tank through the return pipe 8, and the other part enters the filter element 10 in the installation tank 91 through the return pipe 9 to filter impurities before returning to the oil tank. The dual oil return path design reduces the return resistance of a single pipeline by dividing the pressure, thereby improving the emergency pressure relief efficiency. The presence of the filter element ensures the cleanliness of part of the returned hydraulic oil and prevents contaminants from directly entering the oil tank. In addition, the sealing ring 5 between the flanges 3 ensures the sealing of the pipeline connection and prevents leakage. The structure of the observation window 11 and the removable filter element 10 simplifies the maintenance process. Users can judge the status of the filter element 10 through the observation window 11 and replace it in time to ensure the long-term stable operation of the system.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An emergency return oil control device for a hydraulic station, comprising a hydraulic station (1); Its characteristics are, It also includes an oil outlet pipe (2), a flange (3), a fixing bolt (4), a three-way pipe (6), a three-way pipe (61), a solenoid valve (7), a return oil pipe (8), and a return oil pipe (9). The oil outlet port of the hydraulic pump on the hydraulic station (1) is connected to the oil outlet pipe (2). The outlet end of the oil outlet pipe (2) is connected to the three-way pipe (6). The three ports of the three-way pipe (6) are all fixedly connected to the flange (3). The connection of the oil outlet pipe (2) is also fixedly connected to the flange (3). The oil outlet pipe (2) and the three-way pipe (6) are connected by a fixing bolt (4) screwed into the flange (3) for a stable flange connection. The other port of the three-way pipe (6) in the direction of the straight inlet pipe is the outlet of the hydraulic oil. The oil connector is connected to the three-way pipe one (6) in the direction of the inlet pipe, and the three-way pipe one (6) and the three-way pipe two (61) are also connected by a flange (3). A solenoid valve (7) for controlling the switch is installed on the pipe connecting the three-way pipe one (6) to the three-way pipe two (61). The straight side of the three-way pipe two (61) is connected to the oil tank of the hydraulic station (1) through the return oil pipe one (8). The straight other side of the three-way pipe two (61) is connected to the oil tank of the hydraulic station (1) through the return oil pipe two (9). A filter element is connected in series on the return oil pipe two (9). The filter element is used to filter the hydraulic oil returning from the return oil pipe two (9).

2. The emergency return oil control device for a hydraulic station as described in claim 1, characterized in that, It also includes a pressure sensor (12), which is installed on the pipeline of the three-way pipe (6). The pressure-sensing diaphragm of the pressure sensor (12) is located inside the pipeline of the three-way pipe (6). The pressure sensor (12) has a built-in controller and an electrical connection with a solenoid valve (7).

3. The hydraulic station emergency return oil control device as described in claim 2, characterized in that, A sealing ring (5) is provided at the pipe opening of the flange (3) joint. The sealing ring (5) is used to improve the sealing performance of the flange (3) joint.

4. The hydraulic station emergency return oil control device as described in claim 3, characterized in that, The filter element includes a mounting tank (91) and a filter element (10). The mounting tank (91) is connected in series on the return oil pipe (9), and the filter element (10) is installed inside the mounting tank (91).

5. The emergency return oil control device for a hydraulic station as described in claim 4, characterized in that, The filter element (10) is provided with an installation thread (101) at the interface. The filter element (10) is detachably threaded and installed at the interface of the installation tank (91) of the return oil pipe (9). The installation tank (91) has a disassembly port on its side wall.

6. The emergency return oil control device for a hydraulic station as described in claim 5, characterized in that, An observation window (11) is fixedly installed on the disassembly port of the installation tank (91) by bolts. A sealing gasket is provided at the joint between the observation window (11) and the installation tank (91). The observation window (11) is used to observe the usage of the filter element (10).

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