A high-efficiency hydraulic oil tank assembly leak detection device

Abstract

The utility model provides a kind of high-efficient hydraulic oil tank assembly leak hunting device, including main control box, controller, time relay, alarm, high-pressure gas delivery pipeline, pressure detection pipeline, controller and time relay are arranged inside main control box, alarm is arranged on the upper portion of main control box, time relay and alarm are electrically connected with controller, high-pressure gas delivery pipeline is used to deliver high-pressure gas to hydraulic oil tank, pressure detection pipeline is used to realize the pressure detection inside hydraulic oil tank and the detected pressure signal is implemented delivery to controller, controller can control the operation of high-pressure gas delivery pipeline. When the device is used to carry out the sealing detection of hydraulic oil tank assembly, it is simple and efficient and reduces the labor intensity of workers.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic oil tank assembly sealing test technology, specifically a high-efficiency hydraulic oil tank assembly leak detection device. Background Technology

[0002] Hydraulic oil tanks are indispensable components in hydraulic transmission systems, primarily used for the supply and recovery of hydraulic oil. With the development of the construction machinery industry and fierce competition among manufacturers, the quality requirements for supporting components are becoming increasingly stringent. Many OEMs now require hydraulic oil tanks to undergo assembly leak testing after the tank cover and filter element are assembled. Currently, the leak testing method for hydraulic oil tank assemblies generally involves filling the tank with compressed air and then immersing it in water to check for bubbles. However, due to the large size and weight of hydraulic oil tanks, this immersion operation is inconvenient, inefficient, and labor-intensive, especially during mass production or when dealing with large workpieces. Utility Model Content

[0003] The purpose of this invention is to provide a high-efficiency hydraulic oil tank assembly leak detection device. When using this device to perform sealing tests on hydraulic oil tank assemblies, it is simple and efficient to operate and reduces the labor intensity of workers.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a high-efficiency hydraulic oil tank assembly leak detection device, including a main control box, a controller, a time relay, an alarm, a high-pressure gas delivery pipeline, and a pressure detection pipeline. The controller and the time relay are both located inside the main control box, and the alarm is located on the upper part of the main control box. The time relay and the alarm are both electrically connected to the controller. The high-pressure gas delivery pipeline is used to deliver high-pressure gas into the hydraulic oil tank. The pressure detection pipeline is used to detect the pressure inside the hydraulic oil tank and transmit the detected pressure signal to the controller. The controller can control the operation of the high-pressure gas delivery pipeline.

[0005] Preferably, the high-pressure gas transmission pipeline includes a first pipeline, a manual pressure regulating valve, a second pipeline, a solenoid directional valve, a third pipeline, and a first sealing assembly. The first pipeline, the manual pressure regulating valve, the second pipeline, the solenoid directional valve, the third pipeline, and the first sealing assembly are sequentially sealed together. The first sealing assembly is sealed together with a return port of the hydraulic oil tank. The solenoid directional valve is electrically connected to the controller.

[0006] Furthermore, the first sealing assembly includes a first hydraulic connector and a first pneumatic quick connector. One end of the first hydraulic connector can be sealed to the return port of the corresponding hydraulic oil tank, and the other end of the first hydraulic connector is sealed to the outer end of the female head of the first pneumatic quick connector. The outer end of the male head of the first pneumatic quick connector is sealed to the third pipeline.

[0007] Furthermore, the pressure detection pipeline includes a second sealing connection assembly, a fourth pipeline, and a digital display electrical contact pressure gauge, which are sequentially sealed together; the second sealing connection assembly is sealed together with one return port of the hydraulic oil tank, and the digital display electrical contact pressure gauge is electrically connected to the controller.

[0008] Furthermore, the second sealing assembly includes a second hydraulic connector and a second pneumatic quick connector. One end of the second hydraulic connector can be sealed to the return port of the corresponding hydraulic oil tank, and the other end of the second hydraulic connector is sealed to the outer end of the female head of the second pneumatic quick connector. The outer end of the male head of the second pneumatic quick connector is sealed to the fourth pipeline.

[0009] Preferably, the alarm is an audible and visual alarm.

[0010] Furthermore, a start button, a stop button, and an emergency stop button are provided on the lower front side of the main control box, and the start button, stop button, and emergency stop button are all electrically connected to the controller.

[0011] The beneficial effects of this utility model are: the utility model has a simple structure and is convenient to process and manufacture; when using this utility model to test the sealing performance of hydraulic oil tank assemblies, only the corresponding vent connector needs to be connected, which simplifies the leak detection operation of the oil tank and helps to improve the leak detection efficiency of a large number of hydraulic oil tank assemblies; the operation process does not require a large amount of manual labor; during the detection process, the detection results fed back by the alarm are used to achieve the sealing performance test results, so that the detection does not require professional personnel, thereby reducing the difficulty of detection. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram illustrating the application state of this utility model;

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 This is a pneumatic principle diagram of the present invention;

[0016] In the diagram: 1. Main control box, 11. Pneumatic button, 12. Stop button, 13. Emergency stop button, 2. Controller, 3. Time relay, 4. Alarm, 51. First pipeline, 52. Manual pressure regulating valve, 53. Second pipeline, 54. Solenoid directional valve, 55. Third pipeline, 561. First hydraulic connector, 562. First pneumatic quick connector, 5621. Female connector of the first pneumatic quick connector, 5622. Male connector of the first start quick connector, 611. Second hydraulic connector, 612. Second pneumatic quick connector, 6121. Female connector of the second pneumatic quick connector, 6122. Male connector of the second pneumatic quick connector, 62. Fourth pipeline, 63. Digital display electric contact pressure gauge, 64. Transition connector, 7. Hydraulic oil tank. Detailed Implementation

[0017] The following will describe specific embodiments and appendices. Figure 1-3 The technical solutions in the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some preferred embodiments of this utility model, and not all embodiments. Those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0018] This utility model provides a high-efficiency hydraulic oil tank assembly side leakage device (such as...). Figure 1As shown, the system includes a main control box 1, a controller 2, a time relay 3, an alarm 4, a high-pressure gas delivery pipeline, and a pressure detection pipeline. The main control box 1 is an existing electrical control box, so its specific structure will not be described in detail. The controller 2 can be a PLC controller commonly used in the field of industrial automation. The time relay 3 is a known technology product in the existing technical field, and its specific structure and working principle will not be described in detail. In practical applications, the timing duration of the time relay 3 can be set manually. The controller 2 and the time relay 3 are both located inside the main control box 1. The alarm 4 is located on the upper part of the main control box 1. Both the time relay 3 and the alarm 4 are electrically connected to the controller. The high-pressure gas delivery pipeline... The delivery pipeline is used to deliver high-pressure gas into the hydraulic oil tank 7. In practical applications, by filling the hydraulic oil tank 7 with high-pressure gas at a certain pressure, a basis for subsequent leak detection is provided. The pressure detection pipeline is used to detect the pressure inside the hydraulic oil tank 7 and transmit the detected pressure signal to the controller 2. The pressure detection pipeline transmits the real-time detected pressure signal to the controller 2. The controller 2 controls the alarm 4 according to the passage status of the time relay 3 and the comparison of the pressure value, and then realizes leak detection based on the set judgment logic. The controller 2 can control the operation of the high-pressure gas delivery pipeline. By using the controller 2 to control the high-pressure gas delivery pipeline, it is beneficial to realize the pressure holding operation in the hydraulic oil tank 7.

[0019] Based on the above embodiments, the specific implementation of the high-pressure gas transmission pipeline is as follows: The high-pressure gas transmission pipeline includes a first pipeline 51, a manual pressure regulating valve 52, a second pipeline 53, a solenoid directional valve 54, a third pipeline 55, and a first sealing assembly. The manual pressure regulating valve 52 and the solenoid directional valve 54 are known mature technologies in the existing technical field, so their specific structures and working principles will not be described in detail. The first pipeline 51, the manual pressure regulating valve 52, the second pipeline 53, the solenoid directional valve 54, the third pipeline 55, and the first sealing assembly... The components are sequentially sealed and connected, with the first sealing assembly sealing and connecting to one return port of the hydraulic oil tank 7. The electromagnetic directional valve 54 is electrically connected to the controller. In practical applications, the first pipeline 51 is connected to a high-pressure air source, such as an air pump or a high-pressure air cylinder. After the controller controls the air supply of the electromagnetic directional valve 54, air is supplied to the hydraulic oil tank 7. When the controller controls the air supply of the electromagnetic directional valve 54, the air supply to the hydraulic oil tank 7 is stopped. When the pressure detection pipeline is in a sealed state, the hydraulic oil tank 7 maintains pressure.

[0020] Based on the above embodiments, the specific implementation of the first sealing connection assembly is as follows: The first sealing connection assembly includes a first hydraulic connector 561 and a first pneumatic quick connector 562. The first hydraulic connector 561 can be selected from models that match the corresponding return port of the hydraulic oil tank. The first pneumatic quick connector 562 is a known mature technology product in the prior art. One end of the first hydraulic connector 561 can be sealed and connected to the return port of the corresponding hydraulic oil tank 7. The other end of the first hydraulic connector 561 is sealed and connected to the outer end of the female head 5621 of the first pneumatic quick connector 562. In actual application, the sealing connection between the corresponding ends of the first hydraulic connector 561 and the female head of the first pneumatic quick connector can be achieved by welding. The outer end of the male head 5622 of the first pneumatic quick connector is sealed and connected to the third pipe 55. The first pneumatic quick connector 562 can be used to conveniently realize the separation and connection of the third pipe 55 and the first hydraulic connector 561, thereby facilitating the ventilation operation.

[0021] Based on the above embodiments, the specific implementation of the pressure detection pipeline is as follows: the pressure detection pipeline includes a second sealing connection assembly, a fourth pipeline 62, and a digital display electric contact pressure gauge 63. The second sealing connection assembly, the fourth pipeline 62, and the digital display electric contact pressure gauge 63 are sequentially sealed and connected. In actual application, to facilitate the sealed connection between the fourth pipeline 62 and the digital display electric contact pressure gauge 63, a transition joint 64 is provided in the main control box 1. One end of the fourth pipeline 62 is sealed and connected to the transition joint 64. The digital display electric contact pressure gauge 63 is sealed and installed on the transition joint 64. The digital display electric contact pressure gauge 63 is a known mature technology product in the prior art. The second sealing connection assembly is sealed and connected to a return port of the hydraulic oil tank 7. The digital display electric contact pressure gauge 63 is electrically connected to the controller 2. With the pressure detection pipeline in a sealed state, when the hydraulic oil tank 7 is in a pressure-holding state, the pressure inside the hydraulic oil tank 7 can be detected in real time using the digital display electric contact pressure gauge 63. This detection process is unaffected by the inflation process, thus improving the accuracy of air pressure detection. The digital display electric contact pressure gauge 63 has a pressure setting function, allowing the pressure holding value and lower limit pressure value of the hydraulic oil tank 7 to be set according to actual needs.

[0022] Based on the above embodiments, the specific implementation of the second sealing connection assembly is as follows: The second sealing connection assembly includes a second hydraulic connector 611 and a second pneumatic quick connector 612. The second hydraulic connector 611 can be selected from models that match the corresponding return port of the hydraulic oil tank 7. The second pneumatic quick connector 612 is a known mature technology product in the prior art. One end of the second hydraulic connector 611 can be sealed and connected to the corresponding return port of the hydraulic oil tank 7, and the other end of the second hydraulic connector 611 is sealed and connected to the outer end of the female head 6121 of the second pneumatic quick connector. In actual application, the sealing connection between the corresponding ends of the second hydraulic connector 611 and the female head 6121 of the second pneumatic quick connector can be achieved by welding. The outer end of the male head 6122 of the second pneumatic quick connector is sealed and connected to the fourth pipe 62.

[0023] Based on the above embodiments, the alarm 4 can be an audible and visual alarm. The alarm signal emitted by the audible and visual alarm makes it easy for the inspector to determine whether the sealing performance of the hydraulic oil tank 7 is up to standard. Furthermore, to facilitate the detection and control, a start button 11, a stop button 12, and an emergency stop button 13 are provided on the lower front side of the main control box 1. The start button 11, the stop button 12, and the emergency stop button 13 are all electrically connected to the controller 2. When the start button 11 is pressed, the leak detection program is started. When the stop button 12 is pressed, the leak detection program is stopped and the device is put into standby mode. When the emergency stop button 13 is pressed, all electrical control operation programs are stopped.

[0024] Before using this invention to test the sealing performance of the hydraulic oil tank 7, the filter element of the hydraulic oil tank 7 is first installed. Then, the corresponding oil inlet or outlet is sealed using a cover plate or plug, and an outlet is reserved for connection with the first hydraulic connector 561 and the second hydraulic connector 611. During the sealing test, the first hydraulic connector 561 and the second hydraulic connector 611 are first sealed and connected to the corresponding return ports. Simultaneously, the manual pressure regulating valve 52 is adjusted and the time on the time relay 3 is set according to actual needs. The pressure holding value and the lower limit pressure value are then set on the digital display electric contact pressure gauge 63. After setting the corresponding values ​​on the digital display electric contact pressure gauge 63, the start button 11 is pressed. When the start button 11 is pressed, the controller 2 activates the solenoid reversing valve 54, thereby injecting high-pressure gas into the hydraulic oil tank 7. During the continuous injection of high-pressure gas into the hydraulic oil tank 7, the digital display electric contact pressure gauge 63 monitors the pressure value in real time. When the detected pressure value reaches the set holding pressure value, the digital display electric contact pressure gauge 63... Controller 2 sends a control signal, which activates time relay 3 and causes solenoid directional valve 54 to switch. Time relay 3 starts timing upon activation, and solenoid directional valve 54 stops inflation, thus maintaining pressure in hydraulic tank 7. During this continuous pressure maintenance, if the digital display pressure gauge 63 detects that the internal pressure of hydraulic tank 7 is lower than the set lower limit pressure value within the time set by time relay 3, the sealing test is considered unqualified, and controller 2 activates a red audible and visual alarm. If, after the time set by time relay 3, the digital display pressure gauge 63 detects that the internal pressure of hydraulic tank 7 is still higher than the set lower limit pressure value, the sealing test is considered qualified, and controller 2 activates a green audible and visual alarm. After the alarm illuminates, the off button 12 is pressed, putting the device into standby mode for restarting for the next hydraulic tank 7 sealing test.

[0025] In this utility model, "upper", "lower", "front", "back", "left", and "right" are all relative positions used to facilitate the description of positional relationships, and therefore cannot be understood as absolute positions as limitations on the scope of protection.

[0026] Except for the technical features described in the specification, all other technologies are known to those skilled in the art.

[0027] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. For those skilled in the art, several improvements and modifications can be made without departing from the concept of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A high-efficiency leak detection device for hydraulic oil tank assembly, characterized in that, The system includes a main control box, a controller, a time relay, an alarm, a high-pressure gas delivery pipeline, and a pressure detection pipeline. The controller and the time relay are both located inside the main control box, and the alarm is located on the upper part of the main control box. Both the time relay and the alarm are electrically connected to the controller. The high-pressure gas delivery pipeline is used to deliver high-pressure gas into the hydraulic oil tank. The pressure detection pipeline is used to detect the pressure inside the hydraulic oil tank and transmit the detected pressure signal to the controller. The controller can control the operation of the high-pressure gas delivery pipeline.

2. The high-efficiency hydraulic oil tank assembly leak detection device according to claim 1, characterized in that, The high-pressure gas delivery pipeline includes a first pipeline, a manual pressure regulating valve, a second pipeline, a solenoid directional valve, a third pipeline, and a first sealing assembly. The first pipeline, the manual pressure regulating valve, the second pipeline, the solenoid directional valve, the third pipeline, and the first sealing assembly are sequentially sealed together. The first sealing assembly is sealed together with a return port of the hydraulic oil tank. The solenoid directional valve is electrically connected to the controller.

3. The high-efficiency hydraulic oil tank assembly leak detection device according to claim 2, characterized in that, The first sealing connection assembly includes a first hydraulic connector and a first pneumatic quick connector. One end of the first hydraulic connector can be sealed to the return port of the corresponding hydraulic oil tank, and the other end of the first hydraulic connector is sealed to the outer end of the female head of the first pneumatic quick connector. The outer end of the male head of the first pneumatic quick connector is sealed to the third pipeline.

4. The high-efficiency hydraulic oil tank assembly leak detection device according to claim 2, characterized in that, The pressure detection pipeline includes a second sealing connection assembly, a fourth pipeline, and a digital display electric contact pressure gauge, which are sequentially sealed together. The second sealing connection assembly is sealed together with one return port of the hydraulic oil tank, and the digital display electric contact pressure gauge is electrically connected to the controller.

5. A high-efficiency hydraulic oil tank assembly leak detection device according to claim 4, characterized in that, The second sealing assembly includes a second hydraulic connector and a second pneumatic quick connector. One end of the second hydraulic connector can be sealed to the return port of the corresponding hydraulic oil tank, and the other end of the second hydraulic connector is sealed to the outer end of the female head of the second pneumatic quick connector. The outer end of the male head of the second pneumatic quick connector is sealed to the fourth pipeline.

6. A high-efficiency hydraulic oil tank assembly leak detection device according to any one of claims 1-5, characterized in that, The alarm is an audible and visual alarm.

7. A high-efficiency hydraulic oil tank assembly leak detection device according to claim 6, characterized in that, A start button, a stop button, and an emergency stop button are provided on the lower front side of the main control box. The start button, stop button, and emergency stop button are all electrically connected to the controller.

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