CN217443478U - Ultra-low frequency AC withstand voltage device - Google Patents

Abstract

The utility model discloses an ultra-low frequency AC voltage withstand device, which comprises a support box, a main baffle is fixed on an inner wall of one side of the support box, and a main body of an ultra-low frequency cable withstand voltage tester is installed on the top of the main baffle. A display screen is installed on one side of the surface of the main body of the ultra-low frequency cable withstand voltage tester, and a switch is installed on the surface of the ultra-low frequency cable withstand voltage tester main body on one side of the display screen, and the main body of the ultra-low frequency cable withstand voltage tester is installed A cable interface is installed on the surface of the support box, a secondary partition is fixed at one end inside the support box, a battery is fixed on the top of the secondary partition, and a fixing seat is fixed at the corner positions of the bottom end of the secondary partition. The utility model not only enhances the shock absorption performance of the device, but also facilitates the staff to perform outdoor experiment operations, improves the heat dissipation performance of the device, and prolongs the service life of the device.

Description

Ultra-low frequency AC withstand voltage device

technical field

The utility model relates to the technical field of pressure-resistant experimental devices, in particular to an ultra-low frequency AC pressure-resistant device.

Background technique

The ultra-low frequency withstand voltage device is mainly used for the withstand voltage test of polyethylene insulated power cables, and can also be used for the insulation withstand voltage test of large power transformers. The ultra-low frequency withstand voltage test device is a substitute for the traditional power frequency withstand voltage test equipment. The ultra-low frequency AC withstand voltage test device combines the advanced technology of modern digital frequency conversion, adopts microcomputer control, and automates voltage step-up, step-down, measurement and protection. Manual intervention can be carried out during the pressing process, and it can be fully electronic, large-screen LCD display, clear and intuitive, and printer output test report.

There are many kinds of such ultra-low frequency withstand voltage devices on the market today, which can basically meet the needs of people, but there are still some shortcomings. Closed-loop negative feedback control circuit and variable frequency power supply, etc., which lead to the larger size of the body, and it is more inconvenient to carry when the staff goes out to carry. It is still strong, and it is difficult to meet the needs of the staff to go out to work.

Utility model content

The purpose of the present invention is to provide an ultra-low frequency AC voltage withstand device, so as to solve the problems that the ultra-low frequency AC withstand voltage device is inconvenient to carry out and difficult to carry in the above-mentioned background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an ultra-low frequency AC pressure-resistant device, including a support box, a main baffle is fixed on the inner wall of one side of the support box, and an ultra-low frequency is installed on the top of the main baffle The main body of the low-frequency cable withstand voltage tester, a display screen is installed on one side of the surface of the ultra-low frequency cable withstand voltage tester, and a switch is installed on the surface of the ultra-low frequency cable withstand voltage tester on the side of the display screen, and the A cable interface is installed on the surface of the main body of the ultra-low frequency cable withstand voltage tester, a secondary partition is fixed at one end inside the support box, and a battery is fixed at the top of the secondary partition. A fixed seat is fixed, and a support frame is fixed at the bottom end of the fixed seat, hydraulic struts are movably installed on the outer walls of both sides of the support frame, and a rotating shaft is rotatably installed on the outer walls of both sides of the support frame , and the surface of the rotating shaft is fixed with a swing arm, the top end of the swing arm is movably installed with a joint, the bottom end of the joint is fixedly connected with the top end of the piston rod of the hydraulic strut, and a roller is installed at the bottom end of the swing arm.

Preferably, door panels are installed on both outer walls of the support box through hinges, and handles are fixed on both outer walls of the support box.

Preferably, both outer walls of the support box are provided with heat dissipation grooves, and the cross sections of the heat dissipation grooves are rectangular, circular, and diamond-shaped.

Preferably, ventilation boxes are fixed on both sides of the bottom end of the main partition plate, and two groups of the ventilation boxes are arranged, and the two groups of the ventilation boxes are symmetrical with respect to the center line of the main partition plate. A cooling fan is installed at the bottom.

Preferably, there are four sets of the fixed seat and the support frame, two sets of the hydraulic struts are set, and each set of the hydraulic struts corresponds to one set of the support frame.

Preferably, the rollers are PU wheels, the rollers are provided with four groups, and the four groups of the rollers have a symmetrical structure with respect to the center point of the support box.

Preferably, dust removal nets are fixed at both ends of the inside of the ventilation box, and the interlayer between the two groups of the dust removal screens is filled with silica gel moisture-proof particles.

Preferably, the dedusting net is made of metal nylon net, and the mesh number of the dedusting net is 400 meshes.

Compared with the prior art, the beneficial effects of the utility model are: the ultra-low frequency AC voltage withstand device not only enhances the shock absorption performance of the device, but also facilitates the staff to perform outdoor experimental operations, improves the heat dissipation performance of the device, and prolongs the service life of the device;

(1) The hydraulic strut can support the swing arm and the roller by providing the structure with the swing arm and the roller. When the road is bumpy, the swing arm swings, and the rotating shaft is the swing center of the swing arm. The hydraulic struts can be extended or compressed, and the hydraulic struts are used to reduce the impact of vibration on the main body of the ultra-low frequency cable withstand voltage tester, making the body more stable and enhancing the shock absorption performance of the device, which is convenient for staff to use outdoors;

(2) By providing a structure with a cooling fan and a cooling groove that cooperate with each other, the cooling fan is used to send the external fresh air into the main body of the ultra-low frequency cable withstand voltage tester, and the cooling groove plays the role of gas exchange, thereby reducing the ultra-low frequency cable resistance. The working temperature of the main body of the pressure tester provides a suitable environment for the operation of the device and solves the problem of poor heat dissipation performance of the existing device;

(3) By setting up a dust removal net, etc., in the process of active heat dissipation of the device, the two sets of dust removal nets play the role of purifying the air, mainly adsorbing and blocking dust in the air, and the silica gel moisture-proof particles reduce the air humidity, so as to avoid dust, Moisture, etc. enters into the main body of the ultra-low frequency cable withstand voltage tester, extending the service life of the device.

Description of drawings

Fig. 1 is the front sectional structure schematic diagram of the utility model;

Fig. 2 is the enlarged schematic diagram of the structure at place A in Fig. 1 of the utility model;

Fig. 3 is the side view sectional structure schematic diagram of the utility model;

FIG. 4 is a schematic view of the front cross-sectional structure of the ventilation box of the present invention;

Fig. 5 is the side view structure schematic diagram of the utility model;

In the picture: 1. Support box; 101. Door panel; 102. Handle; 103. Heat sink; 2. Main body of ultra-low frequency cable withstand voltage tester; 201, Cable interface; 202, Display screen; 203, Switch; 3. Main partition Plate; 4. Secondary partition; 5. Battery; 6. Fixed seat; 7. Support frame; 8. Hydraulic strut; 9. Joint; 10. Swing arm; 11. Rotary shaft; 12. Roller; 13. Ventilation box; 1301, dust net; 1302, silica gel moisture-proof particles; 14, cooling fan.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIGS. 1-5 , an embodiment provided by the present invention: an ultra-low frequency AC voltage withstand device, comprising a support box 1 , a main baffle 3 is fixed on the inner wall of one side of the support box 1 , and the main baffle 3 is An ultra-low frequency cable withstand voltage tester main body 2 is installed at the top, a display screen 202 is installed on one side of the surface of the ultra-low frequency cable withstand voltage tester main body 2, and the ultra-low frequency cable withstand voltage tester main body 2 on the side of the display screen 202 is installed on the surface There is a switch 203, a cable interface 201 is installed on the surface of the main body 2 of the ultra-low frequency cable withstand voltage tester, an auxiliary partition 4 is fixed at one end inside the support box 1, and a battery 5 is fixed on the top of the auxiliary partition 4, and the battery 5 is a device The electrical equipment inside is powered, the corner positions of the bottom end of the auxiliary partition 4 are fixed with a fixed seat 6, and the bottom end of the fixed seat 6 is fixed with a support frame 7, and the fixed seat 6 and the support frame 7 are provided with four groups in total. There are two groups of struts 8, and each two groups of hydraulic struts 8 correspond to one group of support frames 7;

Door panels 101 are installed on both sides of the outer walls of the support box 1 through hinges, handles 102 are fixed on both sides of the outer walls of the support box 1, and heat sinks 103 are opened on both sides of the outer walls of the support box 1. The cross section adopts rectangle, circle and rhombus, etc.;

Hydraulic struts 8 are movably installed on both outer walls of the support frame 7 , and a rotating shaft 11 is rotatably installed on both outer walls of the support frame 7 , and a swing arm 10 is fixed on the surface of the rotating shaft 11 , and the rotating shaft 11 can face the swing arm 10 . The top of the swing arm 10 is movably installed with a joint 9, the bottom end of the joint 9 is fixedly connected with the top end of the piston rod of the hydraulic strut 8, and the hydraulic strut 8 can support the swing arm 10 and the rollers. 12 to support;

The bottom end of the swing arm 10 is installed with a roller 12, the roller 12 adopts a PU wheel, and the roller 12 is provided with four groups. The four groups of rollers 12 have a symmetrical structure with respect to the center point of the support box 1. The main body of the ultra-low frequency cable withstand voltage tester is used outdoors. 2 When carrying out the withstand voltage test of the cable, the body can be moved by the roller 12;

When encountering road bumps, the swing arm 10 swings, and the hydraulic strut 8 is extended or compressed at this time, and the hydraulic strut 8 is used to reduce the impact of the vibration on the main body 2 of the ultra-low frequency cable withstand voltage tester, and enhance the shock absorption performance of the device ;

Both sides of the bottom end of the main partition 3 are fixed with ventilation boxes 13, and the ventilation boxes 13 are provided with two groups, and the two groups of ventilation boxes 13 are symmetrical about the center line of the main partition 3;

Both ends of the inside of the ventilation box 13 are fixed with dust removal nets 1301, the interlayer between the two sets of dust removal nets 1301 is filled with silica gel moisture-proof particles 1302, and the silica gel moisture-proof particles 1302 reduce air humidity, and a cooling fan 14 is installed at the bottom of the ventilation box 13. , use the cooling fan 14 to send the external fresh air into the main body 2 of the ultra-low frequency cable withstand voltage tester, and the cooling groove 103 plays the role of gas exchange, thereby reducing the working temperature of the ultra-low frequency cable withstand voltage tester main body 2, which is for the operation of the device. provide a suitable environment;

The dust removal net 1301 is made of metal nylon mesh. The mesh number of the dust removal net 1301 is 400 meshes. The dust removal net 1301 is made of metal nylon mesh.

The air blown by the cooling fan 14 into the main body 2 of the ultra-low frequency cable withstand voltage tester is always in a clean and dry state, thereby prolonging the service life of the device.

When using the embodiment of the present application, firstly, when the main body 2 of the ultra-low frequency cable withstand voltage tester is used outdoors to perform the withstand voltage test of the cable, the body can be moved by the roller 12, and when the main body 2 of the ultra-low frequency cable withstand voltage tester is moved, the main body 2 can be moved. During the process, the hydraulic strut 8 can support the swing arm 10 and the roller 12. When encountering road bumps, the swing arm 10 swings, and the rotating shaft 11 can support and limit the swing of the swing arm 10. When the hydraulic strut 8 is extended or compressed, the hydraulic strut 8 is used to reduce the impact of vibration on the main body 2 of the ultra-low frequency cable withstand voltage tester, so that the body is pushed more stably, and the shock absorption performance of the device is enhanced, which is convenient for the staff to use outdoors. When the main body 2 of the ultra-low frequency cable withstand voltage tester is working, the staff turns on the cooling fan 14 to work, the battery 5 supplies power to the cooling fan 14, and the cooling fan 14 is used to send the external fresh air into the main body 2 of the ultra-low frequency cable withstand voltage tester, The heat dissipation groove 103 plays the role of gas exchange, thereby reducing the working temperature of the main body 2 of the ultra-low frequency cable withstand voltage tester, providing a suitable environment for the operation of the device, and solving the problem of poor heat dissipation performance of the existing device. Box 13. During the process of blowing in the main body 2 of the ultra-low frequency cable withstand voltage tester, the dust removal net 1301 is made of metal nylon mesh, and the two groups of dust removal nets 1301 play the role of purifying the air, mainly adsorbing and blocking the dust in the air, and the silica gel is moisture-proof The particles 1302 reduce the air humidity, so that the air blown into the main body 2 of the ultra-low frequency cable withstand voltage tester by the cooling fan 14 is always in a clean and dry state, thereby prolonging the service life of the device.

Claims (8)

1. An ultralow frequency alternating current withstand voltage device is characterized in that: including supporting box (1), be fixed with main baffle (3) on the inner wall of supporting box (1) one side, just ultra low frequency cable withstand voltage tester main part (2) is installed on the top of main baffle (3), display screen (202) are installed to one side on ultra low frequency cable withstand voltage tester main part (2) surface, just ultra low frequency cable withstand voltage tester main part (2) surface mounting of display screen (202) one side has switch (203), the surface mounting of ultra low frequency cable withstand voltage tester main part (2) has cable interface (201), the inside one end of supporting box (1) is fixed with vice baffle (4), just the top of vice baffle (4) is fixed with battery (5), the corner position department of vice baffle (4) bottom all is fixed with fixing base (6), just the bottom mounting of fixing base (6) has support frame (7), all movable mounting has hydraulic pressure vaulting pole (8) on the both sides outer wall of support frame (7), all rotate on the both sides outer wall of support frame (7) and install pivot (11), just the fixed surface of pivot (11) has swing arm (10), the top movable mounting of swing arm (10) has joint (9), connects the bottom of (9) and the piston rod top fixed connection of hydraulic pressure vaulting pole (8), gyro wheel (12) are installed to the bottom of swing arm (10).

2. The ultra low frequency ac voltage withstand device according to claim 1, wherein: the door plate (101) is mounted on the outer walls of the two sides of the supporting box (1) through hinges, and the handles (102) are fixed on the outer walls of the two sides of the supporting box (1).

3. The ultra low frequency ac voltage withstand device according to claim 1, wherein: the supporting box is characterized in that heat dissipation grooves (103) are formed in the outer walls of the two sides of the supporting box (1), and the cross sections of the heat dissipation grooves (103) are rectangular, circular or rhombic.

4. The ultra low frequency ac voltage withstand device according to claim 1, wherein: the both sides of main baffle (3) bottom all are fixed with ventilation case (13), just ventilation case (13) are provided with two sets ofly, and are two sets of ventilation case (13) are symmetrical structure about the central line of main baffle (3), radiator fan (14) are installed to the bottom of ventilation case (13).

5. The ultra low frequency ac voltage withstand device according to claim 1, wherein: the fixing seat (6) and the support frames (7) are provided with four groups, the hydraulic support rods (8) are provided with two groups, and each two groups of hydraulic support rods (8) correspond to one group of support frames (7).

6. The ultra low frequency ac voltage withstand device according to claim 1, wherein: the roller (12) adopts PU wheel, the roller (12) is provided with four groups, four groups roller (12) are the symmetrical structure about the central point of supporting box (1).

7. The ultra low frequency ac voltage withstand device according to claim 4, wherein: both ends of ventilation case (13) inside all are fixed with dust removal net (1301), and two sets of it has dampproofing granule of silica gel (1302) to fill in the intermediate layer between dust removal net (1301).

8. The ultra low frequency ac voltage withstand device according to claim 7, wherein: the dust removal net (1301) is a metal nylon net, and the mesh number of the dust removal net (1301) is four hundred.

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