A leakage monitoring and automatic pressure compensation structure of a hydraulic electromechanical system

Abstract

The utility model relates to hydraulic machine electricity system pressure compensation technical field, and disclose a kind of leakage monitoring and automatic pressure compensation structure of hydraulic machine electricity system, including hydraulic cylinder base, the top of hydraulic cylinder base is fixedly connected with cylinder barrel, and hydraulic oil supplement channel is passed through and is established between the top of hydraulic cylinder base and outer wall, one end of hydraulic oil supplement channel is threadedly connected with three-way pipe head, and the middle end of three-way pipe head is threadedly connected with pressure sensor.The utility model has automatic pressure compensation function, and greatly improves pressure compensation efficiency and accuracy;When monitoring module confirms that system exists leakage and leads to pressure disorder, it will automatically trigger pressure compensation process, control oil supplement pump to deliver hydraulic oil;Oil pressure promotes conical sealing plug to open pressure compensation channel, and accurately supplement to cylinder barrel;After pressure recovery preset threshold, spring drives sealing plug to reset and complete sealing, entire process does not need manual intervention.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic and electromechanical system pressure replenishment technology, specifically a leakage monitoring and automatic pressure replenishment structure for hydraulic and electromechanical systems. Background Technology

[0002] Hydraulic electromechanical systems, with their advantages of high power density and smooth transmission, are widely used in industrial manufacturing, construction machinery, aerospace, and other fields. The sealing performance of the system is a core element ensuring its stable operation; however, under the influence of long-term high-frequency operation, seal aging, pipeline vibration, or installation errors, hydraulic oil leakage is highly likely to occur. Leakage can lead to abnormal system pressure, delayed response of actuators, and other malfunctions. Therefore, leakage monitoring is a critical aspect of the operation and maintenance of hydraulic electromechanical systems.

[0003] Existing leak detection technologies can only detect and warn of leaks. Once a leak is detected, manual intervention is required for shutdown inspection, leak point repair, and system pressurization. This process is not only time-consuming, leading to production interruptions or work stoppages and affecting efficiency, but also makes it difficult to accurately control the pressurization pressure and speed. Improper pressurization can cause system pressure fluctuations, further exacerbating seal wear or triggering other component failures, failing to meet the continuous and stable operation requirements of hydraulic electromechanical systems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a leakage monitoring and automatic pressure replenishment structure for hydraulic electromechanical systems. It has the advantages of automatically detecting the pressure value of the hydraulic system and automatically replenishing pressure and issuing early warnings when pressure leakage occurs, thus solving the aforementioned technical problems.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a leakage monitoring and automatic pressure replenishment structure for a hydraulic electromechanical system, including a hydraulic cylinder base, a cylinder barrel fixedly connected to the top of the hydraulic cylinder base, a hydraulic oil replenishment channel extending through the top and outer wall of the hydraulic cylinder base, a T-joint threadedly connected to one end of the hydraulic oil replenishment channel, a pressure sensor threadedly connected to the middle end of the T-joint, and a pressure replenishment component threadedly connected to one end of the T-joint, and a worm gear flow meter threadedly connected to the outer wall of the cylinder barrel near the top;

[0008] The pressure replenishing assembly includes a sleeve, an inner tube threaded onto the inner wall of the sleeve, a three-pronged plate fixedly connected to the inner wall of the inner tube, a sleeve rod slidably connected inside the three-pronged plate, a spring sleeved on the outer surface of the sleeve rod, a limit plate connected to one end of the sleeve rod by a screw, a conical sealing plug connected to the other end of the sleeve rod by a nut, and an oil replenishing pipe inserted into one end of the inner tube.

[0009] Preferably, the end of the worm gear flow meter away from the cylinder is fixedly connected to a return oil pipe, and an oil inlet channel is provided between the top and the outer wall of the hydraulic cylinder base, with an oil inlet pipe fixedly connected inside the oil inlet channel.

[0010] Preferably, the detection end of the pressure sensor passes through the tee head and extends into the interior of the hydraulic oil replenishment channel. Both the pressure sensor and the worm gear flow meter are connected to a data monitoring module via shielded wires. The data monitoring module has a built-in pressure and flow threshold comparison algorithm for real-time acquisition of pressure data in the hydraulic oil replenishment channel detected by the pressure sensor.

[0011] Preferably, one end of the sleeve is threaded to a tee pipe head, and one end of the inner tube has a tapered opening, with a tapered sealing plug tightly attached inside the tapered opening.

[0012] Preferably, the end of the oil replenishment pipe furthest from the inner pipe is connected to an oil replenishment pump, and the suction end of the oil replenishment pump is connected to a hydraulic oil tank.

[0013] Preferably, one end of the spring abuts against the limiting plate, and the other end of the spring abuts against the triangular plate.

[0014] Compared with the prior art, this utility model provides a leakage monitoring and automatic pressure replenishment structure for a hydraulic electromechanical system, which has the following beneficial effects:

[0015] 1. This utility model can accurately determine leakage, providing reliable data support for the stable operation of the system; the detection end of the pressure sensor is inserted into the hydraulic oil replenishment channel, which can capture the pressure data in the channel connected to the cylinder in real time, and simultaneously reflect the internal pressure status of the cylinder; the worm gear flow meter monitors the change of hydraulic oil flow in real time, and the pressure and flow data collected by both are transmitted to the data monitoring module; the module analyzes the data through a threshold comparison algorithm to form dual monitoring of pressure and flow dimensions, effectively avoiding the misjudgment problem that may occur under a single monitoring dimension, and providing a scientific basis for the accurate identification of leakage.

[0016] 2. This utility model has an automatic pressure replenishment function, which greatly improves the efficiency and accuracy of pressure replenishment. When the monitoring module confirms that there is a leak in the system that causes abnormal pressure, it will automatically trigger the pressure replenishment process and control the oil replenishment pump to deliver hydraulic oil. The oil pressure pushes the conical sealing plug to open the pressure replenishment channel and accurately replenishes the cylinder. After the pressure recovers to the preset threshold, the spring drives the sealing plug to reset and complete the sealing. The whole process does not require manual intervention. This mechanism completely solves the shortcomings of low efficiency and poor accuracy of traditional manual pressure replenishment, ensures the stability of hydraulic system pressure, and significantly improves the continuity and reliability of system operation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the structure of this utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the pressure-compensating component of this utility model.

[0020] The components include: 1. Hydraulic cylinder base; 2. Cylinder barrel; 3. Hydraulic oil replenishment channel; 4. T-joint; 5. Pressure sensor; 6. Pressure compensation assembly; 61. Sleeve; 62. Inner tube; 63. Tripod plate; 64. Sleeve rod; 65. Spring; 66. Limiting plate; 67. Conical sealing plug; 68. Oil replenishment pipe; 7. Worm gear flow meter; 8. Return oil pipe; 9. Oil inlet channel; 10. Oil inlet pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-3 A leakage monitoring and automatic pressure replenishment structure for a hydraulic electromechanical system includes a hydraulic cylinder base 1, a cylinder 2 fixedly connected to the top of the hydraulic cylinder base 1, a hydraulic oil replenishment channel 3 extending through between the top and the outer wall of the hydraulic cylinder base 1, a three-way pipe head 4 threadedly connected to one end of the hydraulic oil replenishment channel 3, a pressure sensor 5 threadedly connected to the middle end of the three-way pipe head 4, and a pressure replenishment component 6 threadedly connected to one end of the three-way pipe head 4, and a worm gear flow meter 7 threadedly connected to the outer wall of the cylinder 2 near the top.

[0023] The pressure replenishing assembly 6 includes a sleeve 61, an inner tube 62 threadedly connected to the inner wall of the sleeve 61, a three-pronged plate 63 fixedly connected to the inner wall of the inner tube 62, a sleeve rod 64 slidably connected inside the three-pronged plate 63, a spring 65 sleeved on the outer surface of the sleeve rod 64, and a limit plate 66 connected to one end of the sleeve rod 64 by a screw, and a conical sealing plug 67 connected to the other end of the sleeve rod 64 by a nut, and an oil replenishing pipe 68 inserted into one end of the inner tube 62.

[0024] Specifically, the end of the worm gear flow meter 7 away from the cylinder 2 is fixedly connected to the return oil pipe 8, and an oil inlet channel 9 is opened between the top and the outer wall of the hydraulic cylinder base 1. An oil inlet pipe 10 is fixedly connected inside the oil inlet channel 9.

[0025] Specifically, the detection end of the pressure sensor 5 passes through the tee head 4 and extends into the interior of the hydraulic oil replenishment channel 3. Both the pressure sensor 5 and the worm gear flow meter 7 are connected to a data monitoring module via shielded wires. The data monitoring module has a built-in pressure and flow threshold comparison algorithm, which is used to collect the pressure data in the hydraulic oil replenishment channel 3 detected by the pressure sensor 5 in real time.

[0026] The advantages are that the detection end of the pressure sensor 5 extends through the tee head 4 into the hydraulic oil replenishment channel 3, which can collect the pressure data of the hydraulic oil in the channel in real time. Since the hydraulic oil replenishment channel 3 is connected to the cylinder 2, it is also possible to monitor the pressure data inside the cylinder 2. The data is transmitted to the monitoring module through a shielded wire, so as to accurately capture the pressure abnormality caused by leakage in the cylinder 2. The worm gear flow meter 7 is threadedly connected to the outer wall of the cylinder 2 near the top, which can monitor the flow rate change of the hydraulic oil. The flow rate data it collects is also transmitted to the data monitoring module at the same time, and compared with the preset flow rate threshold to help determine whether there is a leak in the system. The two work together to achieve dual real-time monitoring of the hydraulic system pressure and flow rate, providing dual data support for the accurate judgment of leakage from both pressure and flow dimensions, avoiding misjudgment caused by a single monitoring dimension. At the same time, the data monitoring module can trigger an automatic pressure replenishment process based on these real-time monitoring data, replacing the traditional manual pressure replenishment method. This effectively solves the problems of existing technologies that can only complete leakage detection and early warning, and the low efficiency and poor accuracy of manual pressure replenishment, ensuring the stability of the hydraulic electromechanical system pressure and improving the continuity and reliability of system operation.

[0027] Specifically, one end of the sleeve 61 is threaded to a tee pipe head 4, and one end of the inner tube 62 has a tapered opening, with a tapered sealing plug 67 tightly attached inside the tapered opening.

[0028] Specifically, the end of the replenishing oil pipe 68 furthest from the inner pipe 62 is connected to a replenishing oil pump, and the suction end of the replenishing oil pump is connected to a hydraulic oil tank.

[0029] Specifically, one end of the spring 65 abuts against the limiting piece 66, and the other end of the spring 65 abuts against the triangular plate 63.

[0030] The advantage is that the monitoring module is located inside the controller of the hydraulic electromechanical system. When an abnormal pressure occurs in the cylinder 2, the monitoring module can detect it through the pressure sensor 5 and the worm gear flow meter 7. Subsequently, it sends a signal to the replenishing pump through the control system, causing it to draw hydraulic oil from the hydraulic oil tank into the replenishing pipe 68. In this way, the oil enters the inner pipe 62, and the oil can contact the conical sealing plug 67, causing it to move away from the conical opening of the inner pipe 62.

[0031] The monitoring module is integrated into the controller of the hydraulic electromechanical system. When abnormal pressure occurs in cylinder 2, the monitoring module detects the abnormal pressure and flow caused by leakage through pressure sensor 5 and worm gear flow meter 7. It then sends a start signal to the replenishing pump through the control system. The replenishing pump then draws hydraulic oil from the hydraulic oil tank and delivers it to the replenishing pipe 68. After the hydraulic oil enters the inner pipe 62 of the pressure replenishing component 6 through the replenishing pipe 68, the oil pressure will press against the conical sealing plug 67 at the end of the sleeve rod 64, causing it to overcome the spring. The spring 65 moves away from the conical opening of the inner tube 62. At this time, the hydraulic oil can enter the three-way pipe head 4 through the inner tube 62 and the sleeve 61 in sequence, and then flow into the hydraulic cylinder base 1 through the hydraulic oil replenishment channel 3, and finally replenish the inside of the cylinder 2. When the pressure inside the cylinder 2 returns to the preset threshold, the monitoring module will control the oil replenishment pump to stop working. After the spring 65 loses the oil pressure resistance, it resets and pushes the sleeve rod 64 to drive the conical sealing plug 67 to re-fit the conical opening of the inner tube 62, completing the sealing and terminating the pressure replenishment process.

[0032] During system operation, the pressure sensor 5 collects real-time pressure data within the hydraulic oil replenishment channel 3 (this data synchronously reflects the pressure within the cylinder 2), while the worm gear flow meter 7 on the outer wall of the cylinder 2 monitors changes in hydraulic oil flow rate in real time. The pressure sensor 5 and worm gear flow meter 7 transmit the collected pressure and flow data synchronously to the data monitoring module integrated within the hydraulic electromechanical system controller via shielded wires. The module compares the real-time data with preset thresholds using a built-in threshold comparison algorithm to determine if there is a leak in the system. When the monitoring module confirms an abnormal pressure due to leakage within the cylinder 2 through data comparison, it immediately sends a start signal to the replenishment pump connected to the end of the replenishment pipe 68 via the control system. After starting, the replenishment pump draws hydraulic oil... The hydraulic oil in the tank is transported to the replenishing pipe 68. After the hydraulic oil enters the inner pipe 62 of the pressure replenishing component 6 through the replenishing pipe 68, the oil pressure contacts the conical sealing plug 67 at the end of the sleeve rod 64, causing it to overcome the elastic force of the spring 65 and move upward from the conical opening of the inner pipe 62, opening the pressure replenishing channel. At this time, the hydraulic oil enters the three-way pipe head 4 through the inner pipe 62 and the sleeve 61 in sequence, and then flows into the hydraulic cylinder base 1 through the hydraulic oil replenishing channel 3, finally replenishing the inside of the cylinder 2. When the pressure inside the cylinder 2 returns to the preset threshold, the data monitoring module controls the replenishing pump to stop working, the resistance of the oil pressure on the conical sealing plug 67 disappears, the spring 65 resets and pushes the sleeve rod 64 to drive the conical sealing plug 67 to re-fit the conical opening of the inner pipe 62, completing the channel sealing and terminating the pressure replenishing process.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can 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. A leakage monitoring and automatic pressure replenishment structure for a hydraulic electromechanical system, comprising a hydraulic cylinder base (1), wherein a cylinder barrel (2) is fixedly connected to the top of the hydraulic cylinder base (1), characterized in that: A hydraulic oil replenishment channel (3) is provided between the top and the outer wall of the hydraulic cylinder base (1). A three-way pipe head (4) is threaded to one end of the hydraulic oil replenishment channel (3). A pressure sensor (5) is threaded to the middle end of the three-way pipe head (4). A pressure compensation component (6) is threaded to one end of the three-way pipe head (4). A worm gear flow meter (7) is threaded to the outer wall of the cylinder (2) near the top. The pressure replenishing assembly (6) includes a sleeve (61), an inner tube (62) is threaded onto the inner wall of the sleeve (61), a three-pronged plate (63) is fixedly connected to the inner wall of the inner tube (62), a sleeve rod (64) is slidably connected inside the three-pronged plate (63), a spring (65) is sleeved on the outer surface of the sleeve rod (64), and a limit plate (66) is connected to one end of the sleeve rod (64) by a screw, a conical sealing plug (67) is connected to the other end of the sleeve rod (64) by a nut, and an oil replenishing pipe (68) is inserted into one end of the inner tube (62).

2. The leakage monitoring and automatic pressure replenishment structure for a hydraulic electromechanical system according to claim 1, characterized in that: The worm gear flow meter (7) is fixedly connected to a return oil pipe (8) at the end away from the cylinder (2). An oil inlet channel (9) is provided between the top and the outer wall of the hydraulic cylinder base (1). An oil inlet pipe (10) is fixedly connected inside the oil inlet channel (9).

3. The leakage monitoring and automatic pressure replenishment structure for a hydraulic electromechanical system according to claim 1, characterized in that: The detection end of the pressure sensor (5) passes through the tee head (4) and extends into the interior of the hydraulic oil replenishment channel (3). The pressure sensor (5) and the worm gear flow meter (7) are both connected to a data monitoring module through shielded wires. The data monitoring module has a built-in pressure and flow threshold comparison algorithm, which is used to collect the pressure data in the hydraulic oil replenishment channel (3) detected by the pressure sensor (5) in real time.

4. The leakage monitoring and automatic pressure replenishment structure for a hydraulic electromechanical system according to claim 1, characterized in that: One end of the sleeve (61) is threaded to a tee head (4), and one end of the inner tube (62) is provided with a tapered opening, with a tapered sealing plug (67) tightly attached inside the tapered opening.

5. The leakage monitoring and automatic pressure replenishment structure for a hydraulic electromechanical system according to claim 1, characterized in that: The end of the oil replenishment pipe (68) away from the inner pipe (62) is connected to an oil replenishment pump, and the suction end of the oil replenishment pump is connected to a hydraulic oil tank.

6. The leakage monitoring and automatic pressure replenishment structure for a hydraulic electromechanical system according to claim 1, characterized in that: One end of the spring (65) abuts against the limiting piece (66), and the other end of the spring (65) abuts against the triangular plate (63).

Images