Quick-acting oil pressure impact test device

Abstract

The utility model relates to the technical field of quick-acting oil pressure relay detection, and discloses a quick-acting oil pressure impact test device which comprises a test tank, a quick-acting oil pressure relay and an electric cylinder are installed at the top and the bottom of the test tank respectively, and a conveying pipeline is further installed on the test tank. The testing tank is connected with the oil pump through the conveying pipeline, the oil pump is connected with the oil tank through the liquid pumping pipe, the oil pump is arranged at one end, far away from the testing tank, of the conveying pipeline, an extraction pipe of the oil pump is connected with the oil tank through the liquid pumping pipe, and a pressure sensor is further arranged on the testing tank. Through cooperation of the conveying pipeline, the oil pump and the liquid pumping pipe, oil in the oil pump can be pumped into the test tank, and then through cooperation of the electric cylinder and the extrusion plate, pressure is applied to the oil in the test tank, so that the quick-acting oil pressure relay can be verified in an oil pressure impact mode, and the use effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of quick-acting oil pressure relay detection, in particular to a quick-acting oil pressure impact test device. Background Technique

[0002] The quick-acting oil pressure relay operates by utilizing the dynamic pressure increase in the oil tank caused by accidents. The faster the oil pressure increases, the more rapid the action; since the propagation speed of the oil pressure wave in transformer oil is extremely fast, it is required that the quick-acting oil pressure relay be very sensitive.

[0003] When calibrating the quick-acting oil pressure relay, the reliability of the quick-acting oil pressure relay is mainly verified by a quick-acting oil pressure relay calibration device. However, most of the existing quick-acting oil pressure relay calibration devices only adopt airtightness tests and action characteristic tests, and cannot conduct oil pressure impact tests.

[0004] Therefore, we propose a quick-acting oil pressure impact test device to solve the problems mentioned above. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problems mentioned above.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a quick-acting oil pressure impact test device, including a test tank, a quick-acting oil pressure relay and an electric cylinder are respectively installed at the top and bottom of the test tank, a conveying pipeline is also installed on the test tank, an oil pump is installed at one end of the conveying pipeline away from the test tank, the extraction pipe of the oil pump is connected to an oil tank through a liquid extraction pipe, and a pressure sensor is also installed on the test tank.

[0007] Further: a solenoid valve is also installed on the conveying pipeline, and the solenoid valve is located between the test tank and the oil pump.

[0008] Further: a bottom plate is installed at the bottom of the quick-acting oil pressure relay, and the bottom plate is connected to the test tank through a plurality of locking components.

[0009] Further: the locking component includes a rotating seat fixed on the outer surface of the test tank, a locking rod is rotatably installed on the rotating seat, a fastening bolt is threadedly installed on the locking rod, and a protrusion cooperating with the fastening bolt is fixed on the circumferential surface of the bottom plate.

[0010] Further: a protective cover is installed on the top of the bottom plate, the quick-acting oil pressure relay is located inside the protective cover, and the exhaust port of the quick-acting oil pressure relay is located outside the protective cover.

[0011] Further: A plurality of mounting holes are equidistantly arranged on the outer surface of the bottom of the protective cover along the circumferential direction. Threaded holes are provided on the bottom plate, and fixing bolts that cooperate with the threaded holes are installed inside the mounting holes.

[0012] Advantages of the present utility model:

[0013] The test tank of the present utility model is connected to an oil pump through a delivery pipeline, and the oil pump is connected to an oil tank through a liquid suction pipe. Through the cooperation of the delivery pipeline, the oil pump, and the liquid suction pipe, the oil in the oil pump can be pumped into the test tank. Then, through the cooperation of the electric cylinder and the extrusion plate, pressure is applied to the oil in the test tank, so that the quick-acting oil pressure relay can be calibrated in the way of oil pressure impact, improving the use effect of the device. Description of the drawings

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is a sectional structural schematic diagram of the test tank in the present utility model;

[0016] Figure 3 is a three-dimensional structural schematic diagram of the locking assembly in the present utility model;

[0017] Figure 4 is an internal structural schematic diagram of the protective cover in the present utility model.

[0018] Names corresponding to each mark in the figure:

[0019] 1. Test tank; 2. Quick-acting oil pressure relay; 3. Electric cylinder; 4. Extrusion plate; 5. Delivery pipeline; 6. Oil pump; 7. Liquid suction pipe; 8. Oil tank; 9. Pressure sensor; 10. Solenoid valve; 11. Bottom plate; 12. Locking assembly; 121. Rotating seat; 122. Locking rod; 123. Tightening bolt; 124. Protrusion; 13. Protective cover; 14. Mounting hole; 15. Threaded hole; 16. Fixing bolt. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present utility model.

[0021] Embodiments of the present utility model:

[0022] A quick-acting oil pressure impact test device includes a test tank 1. The test tank 1 can be installed on a mounting frame (not shown in the figure) for use. An electric cylinder 3 is installed at the lower part of the test tank 1. The output shaft of the electric cylinder 3 extends into the interior of the test tank 1 and is equipped with a pressing plate 4. Through the arrangement of the pressing plate 4, the oil in the test tank 1 can be pressurized. A quick-acting oil pressure relay 2 is installed at the top of the test tank 1, and the lower part of the quick-acting oil pressure relay 2 extends into the interior of the test tank 1. A number of locking components 12 are installed on the outer surface of the upper part of the test tank 1 along the circumferential direction, and the plurality of components 12 are connected to the same bottom plate 11. The quick-acting oil pressure relay 2 is installed on the bottom plate 11. A protective cover 13 is also installed on the top of the bottom plate 11. Through the arrangement of the protective cover 13, it plays a role in protecting the quick-acting oil pressure relay 2, avoiding harm to the staff caused by excessive ejection when the sealing of the quick-acting oil pressure relay 2 is unqualified.

[0023] A delivery pipeline 5 is installed at the lower part of the test tank 1, and a solenoid valve 10 is installed on the delivery pipeline 5. Through the arrangement of the solenoid valve 10, it plays a role in opening or closing the delivery pipeline 5. One end of the delivery pipeline 5 away from the test tank 1 is connected to the output end of an oil pump 6 through a flange. The extraction end of the oil pump 6 is connected to a liquid extraction pipe 7 through a flange, and one end of the liquid extraction pipe 7 away from the oil pump 6 is connected to an oil tank 8. Through the arrangement of the delivery pipeline 5, the oil pump 6 and the liquid extraction pipe 7, the oil in the oil tank 8 can be extracted into the interior of the test tank 1 for detection.

[0024] A pressure sensor 9 is also installed on the outer surface of the test tank 1. It should be noted that: the detection end of the pressure sensor 9 extends into the interior of the test tank 1, the output end of the pressure sensor 9 is electrically connected to a controller through a wire, and the controller is electrically connected to a display device (the display device can be a display screen) through a wire; the display device and the controller are both prior arts, and this application will not elaborate on them in detail.

[0025] Specifically: The locking component 12 includes a rotating seat 121 fixed on the outer surface of the test tank 1. A locking rod 122 is rotatably installed on the rotating seat 121. The end of the locking rod 122 away from the rotating seat 121 is provided with an external thread, and a fastening bolt 123 is threadedly installed on the locking rod 122 through an external bolt. It should be noted that: a protrusion 124 cooperating with the fastening bolt 123 is fixed on the circumferential surface of the bottom plate 11, so as to play a role in fastening the bottom plate 11.

[0026] Specifically: A number of mounting holes 14 are equidistantly arranged on the outer surface of the bottom of the protective cover 13 along the circumferential direction. Threaded holes 15 are provided on the bottom plate 11 and are used in cooperation with the mounting holes 14. A fixing bolt 16 used in cooperation with the threaded hole 15 is installed inside the mounting hole 14. Through the settings of the mounting hole 14, the threaded hole 15, and the fixing bolt 16, the protective cover 13 can be disassembled or installed, facilitating the maintenance or repair of the quick-acting oil pressure relay 2.

[0027] When calibrating the quick-acting oil pressure relay 2, first install the oil pressure relay 2 on the test tank 1 so that the bottom end of the quick-acting oil pressure relay 2 extends into the interior of the test tank 1. Then rotate the locking rod 122 until the upper part of the locking rod 122 rotates into the protrusion 124, and then rotate the fastening bolt 123. Through the cooperation of the locking rod 122 and the fastening bolt 123, the protrusion 124 can be fastened.

[0028] Then turn on the oil pump 6 and open the solenoid valve 10. The oil pump 6 can extract the oil in the oil tank 7 through the liquid extraction pipe 7. The extracted oil is transported to the interior of the test tank 1 through the conveying pipeline 5. After the oil is transported into the test tank 1, close the solenoid valve 10 and turn off the oil pump 6.

[0029] Finally, turn on the electric cylinder 3. The telescopic end of the electric cylinder 3 drives the pressing plate 4 to move up and down repeatedly. When the pressing plate 4 moves upward, the oil in the test tank 1 is compressed and quickly pressurized, so that the quick-acting oil pressure relay 2 can be calibrated in the way of oil pressure impact. At the same time, the pressure sensor 9 can detect the oil pressure in the test tank 1, and the pressure sensor 9 transmits the detected information to the controller, and the controller transmits the information to the display device for observation. When the telescopic end of the electric cylinder 3 drives the pressing plate 4 to move downward, the pressure of the oil in the test tank 1 is released.

Claims

1. A quick-acting hydraulic shock test device, characterized in that: The invention comprises a test tank (1), wherein a quick-acting oil pressure relay (2) and an electric cylinder (3) are respectively installed on the top and bottom of the test tank (1), wherein the output shaft of the electric cylinder (3) extends to the inside of the test tank (1) and is installed with an extrusion plate (4), wherein a delivery pipeline (5) is also installed on the test tank (1), wherein an oil pump (6) is installed at one end of the delivery pipeline (5) away from the test tank (1), wherein an extraction pipe of the oil pump (6) is connected to an oil tank (8) via a liquid extraction pipe (7), and a pressure sensor (9) is also installed on the test tank (1).

2. A rapid-acting hydraulic shock test device according to claim 1, characterized in that: The delivery pipeline (5) is also provided with a solenoid valve (10), and the solenoid valve (10) is located between the test tank (1) and the oil pump (6).

3. A rapid-acting hydraulic shock test device according to claim 1, characterized in that: A base plate (11) is installed at the bottom of the quick-acting oil pressure relay (2), and the base plate (11) is connected to the test tank (1) via a plurality of locking assemblies (12).

4. A rapid-action hydraulic shock test device according to claim 3, characterized in that: The locking assembly (12) comprises a rotating seat (121) fixed to the outer surface of the test tank (1), a locking rod (122) is rotatably mounted on the rotating seat (121), a fastening bolt (123) is threadedly mounted on the locking rod (122), and a protrusion (124) used in conjunction with the fastening bolt (123) is fixed on the circumferential surface of the base plate (11).

5. A rapid-action hydraulic shock test device according to claim 4, characterized in that: A protective cover (13) is installed on the top of the base plate (11), the quick-acting oil pressure relay (2) is located inside the protective cover (13), and the exhaust port of the quick-acting oil pressure relay (2) is located outside the protective cover (13).

6. A rapid-action oil pressure impact test device according to claim 5, characterized in that: The outer surface of the bottom of the protective cover (13) is provided with a plurality of mounting holes (14) equidistantly arranged in the circumferential direction, the bottom plate (11) is provided with threaded holes (15) for use with the mounting holes (14), and fixing bolts (16) for use with the threaded holes (15) are installed inside the mounting holes (14).

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