CN212965176U

CN212965176U - Transformer direct current resistance transformation ratio tester

Info

Publication number: CN212965176U
Application number: CN202021093895.5U
Authority: CN
Inventors: 李常
Original assignee: Wuhan Weiou Power Equipment Co ltd
Current assignee: Wuhan Weiou Power Equipment Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-04-13
Anticipated expiration: 2030-06-15

Abstract

The utility model provides a transformer direct current resistance transformation ratio tester, which belongs to the technical field of electric power testers and comprises a tester main body, a damping base and an adjusting device, wherein the tester main body consists of an ammeter, a control button, a display screen, a high-voltage interface, a low-voltage interface, a single-phase voltage regulator, a three-phase voltage regulator, a power switch, a workbench, a voltmeter and an alarm lamp, the transformer direct current resistance transformation ratio tester can adjust different voltages and currents output by a power supply by respectively inserting a circuit into the high-voltage interface and the low-voltage interface and switching the power switch and adjusting the three-phase voltage regulator and the single-phase voltage regulator, the measured voltage value and the measured current value are displayed on the voltmeter and the ammeter through the voltage transformer and the current transformer arranged in the workbench, the measured direct current resistance data are converted through a D/A converter through the operation of the control button, and the data is fed back to a display screen through a digital control processor.

Description

Transformer direct current resistance transformation ratio tester

Technical Field

The utility model discloses electric power test appearance technical field particularly, relates to a transformer direct current resistance transformation ratio tester.

Background

The transformer is one of the very important power equipment in the power system, the transformer must be tested before being put into operation, the transformer with qualified performance indexes can be put into operation formally after the test, the main work includes insulation resistance test, direct current resistance test, transformation ratio test and the like, the test instrument is required to be brought to an operation site when the transformer works, and other auxiliary tools and forbidden identification boards are required to be brought at the same time.

Although the universal wheel is installed on the existing tester to facilitate the movement of the tester, the protection measures are not taken for the workbench, when the tester moves on uneven road, the workbench is caused to shake to generate vibration, the phenomenon that components inside the workbench are damaged and the circuit is not in contact is easily caused, and in the environment with uneven ground, the workbench is difficult to keep the same horizontal plane, so that the use efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

In order to compensate above not enough, the utility model provides a transformer direct current resistance transformation ratio tester aims at solving current tester and meets the uneven condition in road surface and produce vibrations and easily lead to components and parts impaired and circuit contact failure to meet the uneven environmental tester in ground and be difficult to the problem that keeps same horizontal plane.

The utility model discloses a realize like this:

a transformer DC resistance transformation ratio tester is characterized by comprising

The tester comprises a tester main body, wherein the tester main body consists of an ammeter, a control button, a display screen, a high-voltage interface, a low-voltage interface, a single-phase voltage regulator, a three-phase voltage regulator, a power switch, a workbench, a voltmeter and alarm lamps, the ammeter, the two alarm lamps and the voltmeter are respectively installed above the inclined plane of the workbench from left to right, the single-phase voltage regulator, the three-phase voltage regulator and the power switch are respectively installed on the left side of the inclined plane of the workbench from bottom to top, the display screen is installed in the middle of the inclined plane of the workbench, the control buttons are installed on the right side of the inclined plane of the workbench, and the low-voltage interface and the high-voltage interface are respectively arranged on the transverse surface of the workbench from bottom;

the damping base is composed of a guardrail plate, a rubber block, a transverse plate, an installation cavity, damping springs and a connecting plate, the guardrail plate is hollow, the rubber block is arranged inside the guardrail plate, the transverse plate is fixedly connected to the bottom of the guardrail plate, the connecting plate is fixedly connected to the bottom of the transverse plate, the installation cavity is formed in the connecting plate, the damping springs are arranged inside the installation cavity, one end of each damping spring is fixedly connected to the bottom of the installation cavity, and the other end of each damping spring is fixedly connected to the bottom of the transverse plate;

the adjusting device comprises a supporting column, a limiting hole, a fixed shaft, a threaded hole, a screw rod, a rotating shaft, a placing plate, a cavity, a first bevel gear, a second bevel gear, a rocker, a sliding groove and a limiting block, wherein the two limiting holes and the threaded hole are respectively arranged in the supporting column, the two limiting holes are symmetrically arranged by taking the threaded hole as the center, the sliding groove is respectively arranged in the two limiting holes, the limiting block is arranged in the limiting hole, the two sides of the limiting block are both in sliding connection with the sliding groove, the fixed shaft is fixedly connected to the bottom of the limiting block, the bottom end of the fixed shaft extends out of the limiting hole and is fixedly connected with the placing plate, the placing plate and the supporting column are coaxially arranged, the cavity is arranged in the middle of the placing plate, and the rotating shaft is arranged in, the bottom of axis of rotation is passed through the bearing with the bottom of cavity is rotated and is connected, the axis body surface cover of axis of rotation is equipped with first bevel gear, the top of axis of rotation runs through the top of cavity and extends to place the outside of board, the axis of rotation is located the one end fixedly connected with of placing the board outside the screw rod, the top of screw rod extend to the threaded hole and with the inner wall threaded connection of screw hole, the right side of placing the board is provided with the rocker, the one end of rocker runs through place the board and extend to in the cavity, the one pot head that the rocker is located in the cavity is equipped with second bevel gear.

In an embodiment of the present invention, the bottom of the working table is connected to the top of the transverse plate.

The utility model discloses an in the embodiment, the top fixed connection of support column in the connecting plate bottom, adjusting device is four, is the symmetric distribution and is in the bottom of connecting plate.

In an embodiment of the present invention, the bottom of the placing plate is fixedly installed with a self-locking universal wheel.

In an embodiment of the present invention, the first bevel gear and the second bevel gear are in gear engagement.

The utility model discloses an in the embodiment, the quantity of guardrail board is four, all is the symmetry setting and is in the top of diaphragm.

The utility model discloses an in the embodiment, the front side of workstation is provided with the cabinet door, the outside fixed mounting of cabinet door has the handle.

In an embodiment of the present invention, the working table is located inside the cabinet door and a tool cabinet is disposed inside the cabinet door.

The utility model has the advantages that: the utility model discloses a transformer direct current resistance transformation ratio tester that above-mentioned design obtained, in the use, insert high-pressure interface and low voltage interface respectively with the circuit, through switch switching, the regulation of three-phase voltage regulator and single-phase voltage regulator, can adjust power output different voltage and electric current, through voltage transformer and the current transformer that sets up in the workstation, the magnitude of voltage and the current value that record show at voltmeter and ampere meter, through the control button operation, the direct current resistance data that measure passes through the data conversion of D/A converter, through the feedback of speed digital control treater on the display screen; in the moving process of the tester, the workbench is protected by the guardrail plate when shaking caused by the uneven road surface, the workbench is shaken left and right or front and back to the maximum extent by the guardrail plate, the impact force around the workbench is relieved by the inner rubber plate, the risk of sliding of the workbench is effectively prevented, and the generated vibration is absorbed by the damping spring to buffer the workbench, so that the workbench is not easy to shake, the workbench is stably and firmly installed and not easy to shift, and the conditions of damage of internal components and poor circuit contact are avoided; and, during the operation, meet the circumstances that ground is uneven, rotate through the rocker and drive second bevel gear and rotate, second bevel gear and first bevel gear tooth and pinion cooperation make first bevel gear rotate, and the screw rod makes workstation rising or descending height at the screw hole internal rotation, and simultaneously, the fixed axle drives the stopper and slides from top to bottom with the spout cooperation in spacing downthehole, restricts its height through the stopper to make the workstation keep on same horizontal plane, make user experience effectual.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a perspective view of a transformer dc resistance transformation ratio tester provided by an embodiment of the present invention;

fig. 2 is a schematic structural view of a damping base of a transformer dc resistance transformation ratio tester provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an adjusting device of a transformer dc resistance transformation ratio tester according to an embodiment of the present invention;

fig. 4 is a partially enlarged view of a portion a in fig. 3.

In the figure: 1-tester body, 101-ammeter, 102-control button, 103-display screen, 104-high voltage interface, 105-low voltage interface, 106-single phase voltage regulator, 107-three phase voltage regulator, 108-power switch, 109-workbench, 110-voltmeter, 111-alarm lamp, 2-shock absorption base, 201-guardrail plate, 202-rubber block, 203-transverse plate, 204-installation cavity, 205-shock absorption spring, 206-connecting plate, 3-adjusting device, 301-supporting column, 302-limiting hole, 303-fixed shaft, 304-threaded hole, 305-screw rod, 306-rotating shaft, 307-placing plate, 308-cavity, 309-first bevel gear, 310-second bevel gear, 311-rocker, 103-display screen, 104-high voltage interface, 310-low voltage interface, 105-single phase voltage regulator, 107-three phase voltage regulator, 108-supporting column, 302-limiting hole, 312-sliding groove, 313-limiting block, 4-self-locking universal wheel, 5-handle and 6-cabinet door.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Examples

Referring to fig. 1-4, the present invention provides a technical solution: a transformer direct-current resistance transformation ratio tester comprises a tester main body 1, a damping base 2 and an adjusting device 3.

Referring to fig. 1, a tester main body 1 is composed of an ammeter 101, control buttons 102, a display screen 103, a high-voltage interface 104, a low-voltage interface 105, a single-phase voltage regulator 106, a three-phase voltage regulator 107, a power switch 108, a workbench 109, a voltmeter 110 and alarm lamps 111, the ammeter 101, the two alarm lamps 111 and the voltmeter 110 are respectively installed above the inclined plane of the workbench 109 from left to right, the single-phase voltage regulator 106, the three-phase voltage regulator 107 and the power switch 108 are respectively installed on the left side of the inclined plane of the workbench 109 from bottom to top, the display screen 103 is installed in the middle of the inclined plane of the workbench 109, the control buttons 102 are installed on the right side of the inclined plane of the workbench 109, the low-voltage interface 105 and the high-voltage interface 104 are respectively installed on the transverse plane of the workbench 109 from bottom to top, when in use, lines are respectively inserted into the high-voltage interface 104 and the low-, the power supply can be adjusted to output different voltages and currents, measured voltage values and current values are displayed on a voltmeter 110 and an ammeter 101 through a voltage transformer and a current transformer arranged in a workbench 109, and measured direct current resistance data are converted through data of a D/A converter through operation of a control button 102 and fed back on a display screen 103 through a speed digital control processor.

Referring to fig. 2, the damping base 2 is composed of a guardrail plate 201, a rubber block 202, a transverse plate 203, a mounting cavity 204, a damping spring 205 and a connecting plate 206, the guardrail plate 201 is hollow, the rubber block 202 is arranged inside the guardrail plate 201, the transverse plate 203 is fixedly connected to the bottom of the guardrail plate 201, the connecting plate 206 is fixedly connected to the bottom of the transverse plate 203, the mounting cavity 204 is arranged inside the connecting plate 206, the damping springs 205 are arranged inside the mounting cavity 204, one end of each damping spring 205 is fixedly connected to the bottom of the mounting cavity 204, the other end of each damping spring 205 is fixedly connected to the bottom of the transverse plate 203, when the test instrument moves, the workbench 109 shakes due to uneven road surface, the guardrail plate 201 protects and limits the guardrail plate, the risk of the workbench 109 is effectively prevented from slipping off, the guardrail plate 201 is hit by the up and down or left and right shaking of the workbench 109, and is buffered by the rubber plate, moreover, the vibration generated in the shaking process is absorbed by the damping spring 205, so that the purpose of damping is achieved, the workbench 109 is buffered, the workbench 109 is not prone to vibration, the workbench 109 is stably and firmly installed and not prone to deviation, and the situations that internal components are damaged and the circuits are not in contact are avoided.

Referring to fig. 3-4, the adjusting device 3 comprises a supporting pillar 301, a limiting hole 302, a fixing shaft 303, a threaded hole 304, a screw 305, a rotating shaft 306, a placing plate 307, a cavity 308, a first bevel gear 309, a second bevel gear 310, a rocker 311, a sliding slot 312 and a limiting block 313, wherein the supporting pillar 301 is internally provided with two limiting holes 302 and the threaded hole 304, the two limiting holes 302 are symmetrically arranged with the threaded hole 304 as a center, the sliding slot 312 is arranged in each of the two limiting holes 302, the limiting block 313 is arranged in each limiting hole 302, both sides of the limiting block 313 are slidably connected with the sliding slot 312, the bottom of the limiting block 313 is fixedly connected with the fixing shaft 303, the bottom end of the fixing shaft 303 extends out of the limiting hole 302 and is fixedly connected with the placing plate 307, the placing plate 307 and the supporting pillar 301 are coaxially arranged, the middle of the placing plate 307 is provided with the cavity 308, the rotating shaft, a first bevel gear 309 is sleeved on the surface of the rotating shaft 306, the top end of the rotating shaft 306 penetrates through the top of the cavity 308 and extends to the outer side of the placing plate 307, a screw 305 is fixedly connected to one end of the rotating shaft 306, which is positioned on the outer side of the placing plate 307, the top end of the screw 305 extends into the threaded hole 304 and is in threaded connection with the inner wall of the threaded hole 304, a rocker 311 is arranged on the right side of the placing plate 307, one end of the rocker 311 penetrates through the placing plate 307 and extends into the cavity 308, a second bevel gear 310 is sleeved on one end of the rocker 311, which is positioned in the cavity 308, when the height needs to be adjusted, the rocker 311 is rotated to rotate the second bevel gear 310 and drive the first bevel gear 309 to rotate, the first bevel gear 309 drives the rotating shaft 306 and the screw 305 to rotate the height of the adjusting workbench 109 in the threaded hole 304, the, thereby keeping the table 109 on the same horizontal plane.

Referring to fig. 1-2, the bottom of the workbench 109 is connected to the top of the horizontal plate 203, the top of the supporting column 301 is fixedly connected to the bottom of the connecting plate 206, four adjusting devices 3 are symmetrically distributed at the bottom of the connecting plate 206, and when the ground is uneven, the workbench 109 is maintained at the same level by adjusting one of the adjusting devices 3.

Referring to fig. 1, the bottom of the placing plate 307 is fixedly provided with the self-locking universal wheel 4, and when the device works, the self-locking universal wheel 4 is fixed by self-locking to prevent movement.

Referring to fig. 3, the first bevel gear 309 is engaged with the second bevel gear 310, and the rocker 311 drives the second bevel gear 310 to rotate, so that the first bevel gear 309 rotates to drive the screw 305 to rotate and ascend.

Referring to fig. 1-2, four guardrail plates 201 are symmetrically disposed on the top of the transverse plate 203, and when the road surface shakes during movement, the guardrail plates are protected from the periphery of the workbench 109, thereby effectively preventing the damage of components and the poor contact of circuits.

Referring to fig. 1, a cabinet door 6 is arranged on the front side of a workbench 109, a handle 5 is fixedly mounted on the outer side of the cabinet door 6, and a tool cabinet is arranged on the inner side of the workbench 109, which is located on the cabinet door 6.

The working principle of the transformer direct-current resistance transformation ratio tester is as follows: during the use process, lines are respectively inserted into the high-voltage interface 104 and the low-voltage interface 105, different voltages and currents can be regulated by the power supply output through the switching of the power switch 108 and the regulation of the three-phase voltage regulator 107 and the single-phase voltage regulator 106, the measured voltage value and current value are displayed on the voltmeter 110 and the ammeter 101 through the voltage transformer and the current transformer arranged in the workbench 109, the measured direct-current resistance data are converted through the data of the D/A converter through the operation of the control button 102 and fed back on the display screen 103 through the speed digital control processor; in the moving process of the tester, the workbench 109 is protected by the guardrail plate 201 when shaking caused by the condition of uneven road surface, the workbench 109 is shaken left and right or front and back by the guardrail plate 201 to the maximum extent, the impact force around the workbench 109 is relieved by the internal rubber plate, the risk of sliding down of the workbench 109 is effectively prevented, the generated vibration is absorbed by the damping spring 205 and is buffered for the workbench 109, so that the workbench 109 is not easy to shake, the workbench 109 is stably and firmly installed and not easy to shift, and the conditions of damage of internal components and poor circuit contact are avoided; and, during the operation, meet the circumstances that the ground is uneven, rotate through rocker 311 and drive second bevel gear 310 and rotate, second bevel gear 310 and first bevel gear 309 tooth engagement fit, make first bevel gear 309 rotate, screw 305 is at screw hole 304 internal rotation, make workstation 109 rise or descend the height, simultaneously, fixed axle 303 drives stopper 313 and slides from top to bottom in spacing hole 302 and the cooperation of spout 312, restrict its height through stopper 313, thereby make workstation 109 keep on same horizontal plane, make user experience effectual.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A transformer DC resistance transformation ratio tester is characterized by comprising

Tester main part (1), tester main part (1) comprises ampere meter (101), control button (102), display screen (103), high-pressure interface (104), low-voltage interface (105), single-phase voltage regulator (106), three-phase voltage regulator (107), switch (108), workstation (109), voltmeter (110) and alarm lamp (111), install respectively ampere meter (101), two from a left side to the right side on workstation (109) inclined plane alarm lamp (111) and voltmeter (110), install respectively from supreme down in the left side on workstation (109) inclined plane single-phase voltage regulator (106), three-phase voltage regulator (107) and switch (108), the mid-mounting on workstation (109) inclined plane has display screen (103), a plurality of control button (102) is installed on the right side on workstation (109) inclined plane, the transverse surface of the workbench (109) is respectively provided with a plurality of low-pressure interfaces (105) and high-pressure interfaces (104) from bottom to top;

the damping base (2) is composed of a guardrail plate (201), a rubber block (202), a transverse plate (203), a mounting cavity (204), damping springs (205) and a connecting plate (206), the guardrail plate (201) is hollow, the rubber block (202) is arranged inside the guardrail plate (201), the transverse plate (203) is fixedly connected to the bottom of the guardrail plate (201), the connecting plate (206) is fixedly connected to the bottom of the transverse plate (203), the mounting cavity (204) is formed inside the connecting plate (206), a plurality of damping springs (205) are arranged inside the mounting cavity (204), one end of each damping spring (205) is fixedly connected to the bottom of the mounting cavity (204), and the other end of each damping spring (205) is fixedly connected to the bottom of the transverse plate (203);

the adjusting device (3) comprises a supporting column (301), limiting holes (302), a fixing shaft (303), threaded holes (304), a screw rod (305), a rotating shaft (306), a placing plate (307), a cavity (308), a first bevel gear (309), a second bevel gear (310), a rocker (311), sliding chutes (312) and limiting blocks (313), wherein the supporting column (301) is internally provided with the two limiting holes (302) and the threaded holes (304), the two limiting holes (302) are symmetrically arranged by taking the threaded holes (304) as the center, the sliding chutes (312) are respectively arranged in the two limiting holes (302), the limiting blocks (313) are arranged in the limiting holes (302), two sides of the limiting blocks (313) are both in sliding connection with the sliding chutes (312), the bottom of the limiting blocks (313) is fixedly connected with the fixing shaft (303), the bottom end of the fixed shaft (303) extends out of the limiting hole (302) and is fixedly connected with the placing plate (307), the placing plate (307) and the supporting column (301) are coaxially arranged, the middle part of the placing plate (307) is provided with the cavity (308), the rotating shaft (306) is arranged in the cavity (308), the bottom end of the rotating shaft (306) is rotatably connected with the bottom of the cavity (308) through a bearing, the surface of the rotating shaft (306) is sleeved with the first bevel gear (309), the top end of the rotating shaft (306) penetrates through the top of the cavity (308) and extends to the outer side of the placing plate (307), one end of the rotating shaft (306) positioned on the outer side of the placing plate (307) is fixedly connected with the screw rod (305), and the top end of the screw rod (305) extends into the threaded hole (304) and is in threaded connection with the inner wall of the threaded hole (304), the rocking bar (311) is arranged on the right side of the placing plate (307), one end of the rocking bar (311) penetrates through the placing plate (307) and extends into the cavity (308), and one end, located in the cavity (308), of the rocking bar (311) is sleeved with the second bevel gear (310).

2. A transformer dc ratio tester as claimed in claim 1, wherein the bottom of the table (109) is attached to the top of the cross plate (203).

3. The transformer direct current resistance ratio tester according to claim 1, wherein the top ends of the supporting columns (301) are fixedly connected to the bottom of the connecting plate (206), and the number of the adjusting devices (3) is four, and the four adjusting devices are symmetrically distributed on the bottom of the connecting plate (206).

4. The transformer direct current resistance transformation ratio tester according to claim 1, characterized in that the bottom of the placing plate (307) is fixedly provided with a self-locking universal wheel (4).

5. A transformer dc resistance ratio tester according to claim 1, wherein the first bevel gear (309) and the second bevel gear (310) are in tooth mesh.

6. The transformer direct current resistance ratio tester of claim 1, wherein the number of the guardrail plates (201) is four, and the guardrail plates are symmetrically arranged on the top of the transverse plate (203).

7. The transformer direct current resistance ratio tester according to claim 1, characterized in that a cabinet door (6) is arranged at the front side of the workbench (109), and a handle (5) is fixedly installed at the outer side of the cabinet door (6).

8. The transformer direct current resistance ratio tester according to claim 7, characterized in that a tool cabinet is arranged on the inner side of the cabinet door (6) of the workbench (109).