Universal testing device for testing insulating strength of insulating oil

Abstract

The utility model discloses a test device for testing the insulation strength of general insulating oil, which comprises a box body for containing the general insulating oil, and the bottom of the box body is fixedly connected with an electrifying terminal for electrifying the general insulating oil; the upper end of the box body is vertically and slidably connected with two detection feeler levers which are fixedly connected with each other, the upper ends of the two detection feeler levers are electrically connected with a voltmeter, the upper end of the box body is fixedly connected with a lifting mechanism used for driving the two detection feeler levers to synchronously and vertically slide, and the upper end of the box body is vertically and fixedly connected with a graduated scale; the side surface of the detection feeler lever is provided with a pointer horizontally pointing to the calibrated scale. According to the utility model, the actual thickness of the general insulating oil participating in the test can be adjusted and determined through the lifting mechanism according to the change of the scale pointed by the pointer, so that the actual thickness of the general insulating oil participating in the test can be matched with the theoretical thickness, and the voltage strength test can be realized according to the actual thickness of the general insulating oil; and therefore, the test range is adjustable, and the test applicability is wider.

Description

Technical Field

[0001] The utility model belongs to the technical field of universal insulating oil insulation strength testing, in particular to a universal insulating oil insulation strength testing device. Background Art

[0002] In the prior art, the patent with publication number CN113625139A discloses a universal insulating oil dielectric strength test device and test method, wherein an adjustable high-voltage electric generator is electrically connected to an electrode, and a magnetic stirrer is located below the test chamber to control the stirring action of a magnetic stirrer with an insulating jacket in an electric thermal insulation test cup. The device has the characteristics of being adaptable to various viscosities, being relatively simple, having good comparability and high accuracy, and has significant advantages over traditional insulating oil dielectric strength test devices.

[0003] However, the universal insulating oil insulation strength test device has the following defects: when the universal insulating oil insulation strength test device performs insulation strength test on universal insulating oil, it is difficult to implement voltage strength test according to the actual thickness of universal insulating oil, which results in a smaller test range and poor test applicability. Utility Model Content

[0004] The utility model overcomes the defects of the prior art and provides a universal insulating oil dielectric strength test device, which can make the test more widely applicable.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A general insulating oil dielectric strength test device comprises a box for loading general insulating oil, the bottom of the box is fixedly connected with a power supply terminal for energizing the general insulating oil; the upper end of the box is vertically slidably connected with two mutually fixed detection feelers, the upper ends of the two detection feelers are electrically connected with a voltmeter, the upper end of the box is fixedly connected with a lifting mechanism for driving the two detection feelers to synchronously slide vertically, the upper end of the box is vertically fixedly connected with a scale, and the side of the detection feeler is provided with a pointer pointing horizontally to the scale.

[0007] The beneficial effects of adopting the above technical solution are as follows: after the universal insulating oil is loaded into the box and the detection feeler is inserted into the universal insulating oil, the universal insulating oil is energized through the power-on terminal, and the voltmeter measures the voltage through the two detection feelers to perform a dielectric strength test on the universal insulating oil; in addition, the lifting mechanism can synchronously adjust the vertical heights of the two detection feelers, thereby adjusting the actual thickness of the universal insulating oil participating in the test, and according to the change in the scale indicated by the pointer before and after the adjustment, the actual thickness of the universal insulating oil participating in the test can be determined, so as to facilitate matching the actual thickness of the universal insulating oil participating in the test with the theoretical thickness, thereby facilitating the voltage strength test according to the actual thickness of the universal insulating oil, thereby making the test range adjustable and the test more applicable.

[0008] In one embodiment, a first connecting plate is provided at the upper end of the box body, the detection feeler rod is slidably connected to the first connecting plate, and the lifting mechanism and the scale are fixedly connected to the first connecting plate.

[0009] The beneficial effects of adopting the above technical solution are: the first connecting plate provides support for the sliding of the detection feeler rod, and provides support for the lifting mechanism and the scale.

[0010] In one embodiment, the universal insulating oil dielectric strength test device includes a second connecting plate, and the pointer and the two detection feelers are fixedly connected to the second connecting plate.

[0011] The beneficial effect of adopting the above technical solution is that the pointer and the two detection feelers are fixedly connected to the same second connecting plate, so that the pointer can rise and fall with the rise and fall of the detection feeler, which is conducive to the change of the scale indicated by the pointer to characterize the height change of the detection feeler, and then facilitates the determination of the actual thickness of the universal insulating oil.

[0012] In one embodiment, the lifting mechanism includes a frame fixedly connected to the side of the first connecting plate, the upper end of the frame is fixedly connected to a motor with the output end facing downward, the output end of the motor is vertically fixedly connected to a lead screw, the lower end of the lead screw is rotatably connected to the lower end of the frame, and the lead screw is threadedly connected to a lead screw nut fixedly connected to the second connecting plate.

[0013] The beneficial effect of adopting the above technical solution is that the motor can drive the lead screw to rotate, so that the second connecting plate can be vertically lifted and lowered along with the lead screw nut, thereby driving the pointer on the second connecting plate and the two detection feelers to be vertically lifted and lowered.

[0014] In one embodiment, two sides of the lead screw nut are in contact with two side walls of the frame respectively.

[0015] The beneficial effect of adopting the above technical solution is that the two side walls of the frame can restrict the two sides of the lead screw nut to prevent the lead screw nut from rotating, while providing support for the sliding of the lead screw nut.

[0016] In one embodiment, the first connecting plate is fixedly connected to the first reinforcement block and the second reinforcement block, the lower end of the scale is fixedly connected to the first reinforcement block, the upper end of the scale is fixedly connected to the inclined support plate, the lower end of the inclined support plate is fixedly connected to the second reinforcement block, and a connecting block is arranged between the scale and the inclined support plate.

[0017] The beneficial effects of adopting the above technical solution are as follows: the first reinforcement block reinforces the lower end of the scale, and after the inclined support plate is reinforced by the first reinforcement block, its upper end further reinforces the upper end of the scale, and the scale is further reinforced by the connecting block, so that the scale is more firm and stable during use, thereby avoiding large errors when the pointer and the scale indicate thickness values, thereby reducing the thickness error value.

[0018] In one embodiment, electrical conductors are provided between the top ends of the two detection feelers and the voltmeter.

[0019] The beneficial effect of adopting the above technical solution is that the top ends of the two detection feelers are electrically connected to the voltmeter through electrical conductors.

[0020] In one embodiment, a support plate for placing a voltmeter is horizontally arranged on the outer side of the box.

[0021] The beneficial effect of adopting the above technical solution is that the support plate provides support force for the voltmeter to increase the stability of the voltmeter.

[0022] In one embodiment, a socket block is fixedly connected to the bottom of the box, and a power terminal is fixedly connected inside the socket block.

[0023] The beneficial effect of adopting the above technical solution is that the socket block provides supporting force for the power-carrying terminal.

[0024] In one embodiment, the lower end of the power terminal extends outside the box, and the lower end of the power terminal is connected to a power supply harness.

[0025] The beneficial effect of adopting the above technical solution is that the power supply harness can supply power to the lower end of the power-on terminal, so as to supply power to the universal insulating oil in the box through the power-on terminal.

[0026] The beneficial effects of the utility model are:

[0027] After the universal insulating oil is filled in the box and the detection feeler is inserted into the universal insulating oil, the universal insulating oil is energized through the power-on terminal, and the voltmeter measures the voltage through the two detection feelers to test the insulation strength of the universal insulating oil; in addition, the lifting mechanism can synchronously adjust the vertical heights of the two detection feelers, thereby adjusting the actual thickness of the universal insulating oil participating in the test, and the actual thickness of the universal insulating oil participating in the test can be determined based on the change in the scale indicated by the pointer before and after the adjustment, so as to facilitate matching the actual thickness of the universal insulating oil participating in the test with the theoretical thickness, thereby facilitating the voltage strength test according to the actual thickness of the universal insulating oil, thereby making the test range adjustable and the test more applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0029] in:

[0030] Figure 1 The structural schematic diagram of the utility model is shown;

[0031] Figure 2 The schematic diagram of the structure of the lifting mechanism in the utility model is shown;

[0032] Figure 3 The schematic diagram of the structure of the scale in the utility model is shown;

[0033] Figure 4 The schematic diagram of the structure of the bottom end of the utility model is shown;

[0034] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0035] Reference numerals:

[0036] 1-box, 2-detection feeler, 3-first connecting plate, 4-second connecting plate, 5-lifting mechanism, 501-frame, 502-motor, 503-screw, 504-screw nut, 6-scale, 7-pointer, 8-electrical wire, 9-voltmeter, 10-support plate, 11-power terminal, 12-socket block, 13-first reinforcement block, 14-second reinforcement block, 15-inclined support plate, 16-connecting block. DETAILED DESCRIPTION

[0037] The utility model will be further described below in conjunction with the accompanying drawings.

[0038] The utility model provides a universal insulating oil dielectric strength test device, such as Figure 1As shown, it includes a box body 1 for loading universal insulating oil, the bottom of the box body 1 is fixedly connected with a power supply terminal 11 for supplying electricity to the universal insulating oil; the upper end of the box body 1 is vertically slidably connected with two mutually fixed detection feelers 2, the upper ends of the two detection feelers 2 are electrically connected with a voltmeter 9, the upper end of the box body 1 is fixedly connected with a lifting mechanism 5 for driving the two detection feelers 2 to slide vertically synchronously, the upper end of the box body 1 is vertically fixedly connected with a scale 6, and the side of the detection feeler 2 is provided with a pointer 7 horizontally pointing to the scale 6.

[0039] It can be understood that after the universal insulating oil is loaded into the box body 1 and the detection feeler 2 is inserted into the universal insulating oil, and then the universal insulating oil is energized through the power-on terminal 11, the voltmeter 9 measures the voltage through the two detection feelers 2 to perform a dielectric strength test on the universal insulating oil; in addition, the lifting mechanism 5 can synchronously adjust the vertical heights of the two detection feelers 2, thereby adjusting the actual thickness of the universal insulating oil participating in the test, and according to the change in the scale indicated by the pointer 7 before and after the adjustment, the actual thickness of the universal insulating oil participating in the test can be determined, so as to facilitate matching the actual thickness of the universal insulating oil participating in the test with the theoretical thickness, thereby facilitating the voltage strength test according to the actual thickness of the universal insulating oil, thereby making the test range adjustable and the test more applicable.

[0040] It should be noted that when the lower end of the detection feeler rod 2 contacts the bottom surface of the box body 1, the scale of the pointer 7 preferably points to the zero scale line of the scale 6. In this way, after the detection feeler rod 2 is raised and lowered, the scale pointed by the pointer 7 is the actual thickness of the universal insulating oil participating in the test.

[0041] In one embodiment, a first connecting plate 3 is provided at the upper end of the box body 1, the detection feeler rod 2 is slidably connected to the first connecting plate 3, and the lifting mechanism 5 and the scale 6 are fixedly connected to the first connecting plate 3; wherein, the first connecting plate 3 can be a U-shaped plate.

[0042] It can be understood that the first connecting plate 3 provides support for the sliding of the detection feeler rod 2 , and provides support for the lifting mechanism 5 and the scale 6 .

[0043] In one embodiment, the universal insulating oil dielectric strength test device comprises a second connecting plate 4 , and the pointer 7 and the two detection feelers 2 are fixedly connected to the second connecting plate 4 .

[0044] It can be understood that the pointer 7 and the two detection feelers 2 are fixedly connected to the same second connecting plate 4, so that the pointer 7 can rise and fall with the detection feeler 2, which is conducive to the change of the scale indicated by the pointer 7 to characterize the height change of the detection feeler 2, and then facilitates the determination of the actual thickness of the universal insulating oil.

[0045] In one embodiment, Figure 2As shown, the lifting mechanism 5 includes a frame 501 fixedly connected to the side of the first connecting plate 3, the upper end of the frame 501 is fixedly connected to a motor 502 with the output end facing downward, the output end of the motor 502 is vertically fixedly connected to a lead screw 503, the lower end of the lead screw 503 is rotatably connected to the lower end of the frame 501, and the lead screw nut 504 fixedly connected to the second connecting plate 4 is threadedly connected on the lead screw 503.

[0046] It is understandable that the motor 502 can drive the lead screw 503 to rotate, so that the second connecting plate 4 can be vertically lifted and lowered along with the lead screw nut 504, thereby driving the pointer 7 on the second connecting plate 4 and the two detection feelers 2 to be vertically lifted and lowered.

[0047] In one embodiment, two sides of the lead screw nut 504 are in contact with two side walls of the frame 501 respectively.

[0048] It can be understood that the two side walls of the frame 501 can restrict the two sides of the screw nut 504 to prevent the screw nut 504 from rotating, while providing support for the sliding of the screw nut 504.

[0049] It should be noted that the two side walls of the frame 501 and the two sides of the lead screw nut 504 need to be polished.

[0050] In one embodiment, Figure 1 and Figure 3 As shown, the first connecting plate 3 is fixedly connected to the first reinforcing block 13 and the second reinforcing block 14, the lower end of the scale 6 is fixedly connected to the first reinforcing block 13, the upper end of the scale 6 is fixedly connected to the inclined support plate 15, the lower end of the inclined support plate 15 is fixedly connected to the second reinforcing block 14, and a connecting block 16 is arranged between the scale 6 and the inclined support plate 15.

[0051] It can be understood that the first reinforcement block 13 reinforces the lower end of the scale 6. After the inclined support plate 15 is reinforced by the first reinforcement block 13, its upper end further reinforces the upper end of the scale 6, and the scale 6 is further reinforced by the connecting block 16, so that the scale 6 is more firm and stable during use, thereby avoiding a large error when the pointer 7 and the scale 6 indicate the thickness value, thereby reducing the thickness error value, so that the universal insulating oil insulation strength test is more accurate.

[0052] In one embodiment, an electric wire 8 is provided between the top of the two detection feelers 2 and the voltmeter 9, so that the top of the two detection feelers 2 is electrically connected to the voltmeter 9 through the electric wire 8; specifically, the top of the two detection feelers 2 is welded with the electric wire 8.

[0053] In one embodiment, a support plate 10 for placing the voltmeter 9 is horizontally disposed on the outer side of the box body 1 ; wherein the support plate 10 provides support force for the voltmeter 9 to increase the stability of the voltmeter 9 .

[0054] In one embodiment, Figure 1 and Figure 4 As shown, a socket block 12 is fixedly connected to the bottom of the box body 1, and a power terminal 11 is fixedly connected inside the socket block 12; wherein, the socket block 12 provides support force for the power terminal 11.

[0055] In one embodiment, the lower end of the power terminal 11 extends outside the box 1 , and the lower end of the power terminal 11 is connected to a power supply harness.

[0056] It can be understood that the power supply harness can supply power to the lower end of the power supply terminal 11 so as to supply power to the universal insulating oil in the box 1 through the power supply terminal 11 .

[0057] It should be noted that the box body 1 can be suspended to facilitate the arrangement of the lower end of the power terminal 11 and the power supply harness.

[0058] The working process of the utility model is:

[0059] Pour universal insulating oil into the box 1 until the depth of the universal insulating oil reaches four fifths of the height of the box 1;

[0060] Start the motor 502 to raise the two detection feelers 2 until the scale indicated by the pointer 7 reaches the theoretical thickness of the universal insulating oil and then turn off the motor 502;

[0061] The universal insulating oil in the box body 1 is energized through the power supply terminal 11, and the voltage is measured through the voltmeter 9 to perform a dielectric strength test on the universal insulating oil of corresponding thickness.

[0062] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0063] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments, and other arrangements may be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the features described in the various dependent claims and herein may be combined in a manner different from that described in the original claims. It may also be understood that the features described in conjunction with the individual embodiments may be used in other described embodiments.

Claims

1. A universal insulating oil dielectric strength test device, characterized in that: The invention comprises a box (1) for loading universal insulating oil, wherein the bottom of the box (1) is fixedly connected to a power supply terminal (11) for supplying electricity to the universal insulating oil; the upper end of the box (1) is vertically slidably connected to two mutually fixedly connected detection feelers (2), the upper ends of the two detection feelers (2) are electrically connected to a voltmeter (9), the upper end of the box (1) is fixedly connected to a lifting mechanism (5) for driving the two detection feelers (2) to synchronously slide vertically, the upper end of the box (1) is vertically fixedly connected to a scale (6), and the side of the detection feeler (2) is provided with a pointer (7) horizontally pointing to the scale (6).

2. A universal insulating oil dielectric strength test device according to claim 1, characterized in that: A first connecting plate (3) is provided at the upper end of the box body (1), the first connecting plate (3) is slidably connected to the detection feeler rod (2), and the first connecting plate (3) is fixedly connected to the lifting mechanism (5) and the scale (6).

3. A universal insulating oil dielectric strength test device according to claim 2, characterized in that: It comprises a second connecting plate (4), on which the pointer (7) and the two detection feeler rods (2) are fixedly connected.

4. A universal insulating oil dielectric strength test device according to claim 3, characterized in that: The lifting mechanism (5) comprises a frame (501) fixedly connected to the side of the first connecting plate (3); a motor (502) with an output end facing downward is fixedly connected to the upper end of the frame (501); a lead screw (503) is vertically fixedly connected to the output end of the motor (502); the lower end of the lead screw (503) is rotatably connected to the lower end of the frame (501); and a lead screw nut (504) fixedly connected to the second connecting plate (4) is threadedly connected to the lead screw (503).

5. A universal insulating oil dielectric strength test device according to claim 4, characterized in that: Both sides of the lead screw nut (504) are in contact with both side walls of the frame (501) respectively.

6. A universal insulating oil dielectric strength test device according to claim 2, characterized in that: A first reinforcing block (13) and a second reinforcing block (14) are fixedly connected to the first connecting plate (3); the lower end of the scale (6) is fixedly connected to the first reinforcing block (13); the upper end of the scale (6) is fixedly connected to an inclined support plate (15); the lower end of the inclined support plate (15) is fixedly connected to the second reinforcing block (14); and a connecting block (16) is provided between the scale (6) and the inclined support plate (15).

7. A universal insulating oil dielectric strength test device according to claim 1, characterized in that: An electric conductor (8) is provided between the top ends of the two detection feelers (2) and the voltage meter (9).

8. A universal insulating oil dielectric strength test device according to claim 1, characterized in that: A support plate (10) for placing the voltmeter (9) is horizontally arranged on the outer side of the box body (1).

9. A universal insulating oil dielectric strength test device according to claim 1, characterized in that: A socket block (12) is fixedly connected to the bottom of the box body (1), and the power-on terminal (11) is fixedly connected inside the socket block (12).

10. A universal insulating oil dielectric strength test device according to claim 1, characterized in that: The lower end of the power terminal (11) extends outside the box (1), and the lower end of the power terminal (11) is connected to a power supply harness.

Images