CN210894529U

CN210894529U - Electrical test device

Info

Publication number: CN210894529U
Application number: CN201921281885.1U
Authority: CN
Inventors: 王全兵; 邹福; 梁小平
Original assignee: Chongqing Zhongheng Electric Appliance Co ltd
Current assignee: Chongqing Zhongheng Electric Appliance Co ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-06-30
Anticipated expiration: 2029-08-08

Abstract

The utility model relates to the technical field of electrical tests, and discloses an electrical test device, which comprises a test box, and an input meter, a low-voltage test meter I, a direct-current test meter and a low-voltage test meter II which are fixed on the test box, wherein the input meter is electrically connected with the low-voltage test meter I, the direct-current test meter, the low-voltage test meter II and a current test meter; the low-voltage test meter I is provided with a three-phase four-wire interface, the direct-current test meter is provided with a positive electrode interface and a negative electrode interface, the low-voltage test meter II is provided with a two-wire interface, and the current test meter is provided with a current interface; the input meter, the low-voltage test meter, the direct-current test meter, the low-voltage test meter II and the current test meter are electrically connected with an on-off switch and a display lamp; the test box is also provided with a current regulator and a voltage regulator which are electrically connected with the input meter. The utility model discloses simple structure, and through electrical test equipment, can carry out electrical test to different equipment.

Description

Electrical test device

Technical Field

The utility model relates to an electrical test technical field, concretely relates to electrical test device.

Background

The electrical test is to test and verify the insulation performance, electrical characteristics, mechanical properties, and the like of each electrical device unit in an electrical system one by one according to relevant regulations in standards, regulations, and specifications, before the electrical system and the electrical device are put into use, in order to determine whether there is a quality problem in terms of installation or manufacture, and to determine whether the newly installed electrical device can be put into operation normally. Through the tests and the verifications, the defects of the electrical equipment during manufacturing and installation can be timely found and eliminated, the quality problem is avoided, and the electrical system and the electrical equipment can be ensured to be normally put into operation.

The existing electrical test devices are all test instruments with single functions, such as: the voltages used by different electrical devices are different, including three-phase four-wire voltage, two-wire voltage, direct current voltage, alternating current voltage and the like, and different devices need to be detected by using different test instruments. The existing test instrument can only detect one line voltage, and the test instrument needs to be replaced when detecting another line voltage, so that the measurement work is complicated, the efficiency is not high, if the corresponding instrument is not carried, the test period can be delayed, and therefore the electrical test device needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electrical test device can detect multiple line voltage, improves electrical test's work efficiency.

In order to achieve the above object, the utility model provides a following technical scheme: the test device comprises a test box, and an input table, a low-voltage test table I, a direct-current test table and a low-voltage test table II which are fixed on the test box, wherein the input table, the low-voltage test table I, the direct-current test table, the low-voltage test table II and a current test table are respectively electrically connected and form a closed loop;

the low-voltage test meter I is provided with a three-phase four-wire interface, the direct-current test meter is provided with a positive electrode interface and a negative electrode interface, the low-voltage test meter II is provided with a two-wire interface, and the current test meter is provided with a current interface;

the low-voltage test table I, the direct-current test table, the low-voltage test table II and the current test table are electrically connected with an on-off switch, a display lamp and a change-over switch;

the test box is also provided with a current regulator and a voltage regulator which are electrically connected with the input meter.

The utility model discloses a principle and beneficial effect: the electrical test comprises the detection of the compression resistance of the equipment, and an electrical test device is generally adopted.

The conventional electrical test device can only perform a withstand voltage test on 100V or 220V electrical equipment, and if a 100V test table is provided and a 220V withstand voltage test is required, the test table needs to be replaced, which inevitably reduces the efficiency of the electrical test operation.

In the actual operation process, the work efficiency of replacing the electrical testing device is low, mainly because the lead between the electrical testing device and the electrical device needs to be replaced, even a chart needs to be compared, and thus the test efficiency is low. Some electrical devices also measure current, etc., which leads to the need to replace the ammeter. Thus, an electrical test apparatus is improved.

In this scheme, be provided with low-voltage test table I, low-voltage test table II, direct current test table and current test table, can test different operating voltage's electrical equipment.

The input meter is arranged in the scheme, the input voltage intensity can be displayed, the voltage is regulated through the current regulator and the voltage regulator, and the preset voltage and current values of the electrical test equipment are approached as much as possible. All be provided with change over switch on the above test table, the voltage of input and current strength change, can switch over voltage through change over switch, switch into 110V voltage like commercial power voltage to reach the voltage test's of different intensity purpose, this scheme can carry out withstand voltage test to the electrical equipment of different intensity, has avoided the problem that test instrument frequently changed, has improved experimental work efficiency.

Further, the test box is provided with a wire storage box.

Has the advantages that: the wire storage box is used for storing the wires so as to prevent the wires from being placed outside the test box.

Further, the bottom of the test box is rotatably connected with universal wheels.

Has the advantages that: the universal wheels can facilitate the test box to move to different positions of the tested equipment.

Further, the two sides of the test box are provided with heat dissipation holes.

Has the advantages that: the heat dissipation hole dissipates heat to the test box.

Further, a wire hanging frame is fixed in the wire storage box.

Has the advantages that: the wires can be wound on the wire hanging frame so as to be straightened conveniently.

Further, working platforms are arranged on two sides of the test box.

Has the advantages that: when the electrical test is carried out, other tools are needed and can be placed on the working platform, so that the operator can conveniently search.

Further, the dust remover comprises a dust remover, wherein an air inlet of the dust remover is communicated with an air inlet pipe facing one side of the heat dissipation holes, and an air outlet of the dust remover is communicated with an air outlet pipe facing the other side of the heat dissipation holes.

Has the advantages that: when the dust remover works, the dust remover sucks air through the air inlet pipe and discharges the sucked air from the air outlet pipe, and the air enters and is discharged to dissipate heat and cool the test box.

Furthermore, the air outlet pipe and the air inlet pipe are both provided with a plurality of dust collection units, each dust collection unit comprises a contraction section, a throat section and a diffusion section, the contraction section is communicated with the diffusion section through the throat section, and the throat section is provided with a dust hole.

Has the advantages that: when gas flows in the air inlet pipe and the air outlet pipe, the gas enters from the contraction section and is discharged from the diffusion section to form certain negative pressure in the throat pipe section, and dust in the test box is blown away through the negative pressure, so that the dust removal effect is achieved.

Further, vertical sliding connection has the limiting plate on the proof box, and the dust remover is fixed on the limiting plate, and the below of limiting plate is provided with its through-hole of wearing out the proof box, is provided with spacing hole on the limiting plate, and horizontal sliding connection has the spacing card with spacing hole complex on the proof box, is fixed with the elastic component that offsets with the proof box on the spacing card.

Has the advantages that: the limiting plate slides downwards and contacts with the ground through the through hole, so the limiting plate can limit the test box, and the sliding probability of the test box is reduced. When the limiting plate does not need to be limited, the limiting plate slides upwards, and the limiting card stretches into the groove to clamp the limiting plate.

Furthermore, the bottom of the limiting plate is fixed with a friction plate.

Has the advantages that: the friction disc increases the frictional force of limiting plate and ground, improves the stability of limiting plate.

Drawings

Fig. 1 is a front view of an electrical testing apparatus according to a first embodiment and a second embodiment of the present invention;

FIG. 2 is a rear view of FIG. 1;

fig. 3 is a left side view of an electrical testing apparatus according to a first embodiment of the present invention;

fig. 4 is a partial sectional view of an electrical testing apparatus according to a second embodiment of the present invention;

FIG. 5 is a partial cross-sectional view of a second embodiment of the dust removal tube of the present invention;

fig. 6 is a left side view of the dust removing mechanism in the third embodiment of the present invention;

fig. 7 is a front view of a dust removing mechanism in the third embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments: the device comprises a test box 1, a current test table 2, a low-voltage test table II3, a direct-current test table 4, a wiring rack 5, a low-voltage test table I6, an input table 7, a display lamp 8, an emergency stop switch 9, an alarm switch 11, a current regulator 12, a dust removal cavity 13, a sponge layer 131, an air outlet pipe 132, a diffusion section 1321, a throat pipe section 1322, a contraction section 1323, a dust hole 1324, a limit plate 133, a limit card 134, a spring 135, a limit groove 136, a dust remover 137, a universal wheel 14, a voltage regulator 15, a working platform 16, a stop switch 17, a running switch 18, a working lamp 19, a wire storage box 20, a standby wiring board 21, a two-wire interface 22, a primary wiring board 23, a wire hanging rack 24, a heat dissipation hole 25, a meter panel 26, a change-over switch 27, a wire wheel 31, a dust removal box 32, a sliding plate 33, a rotating shaft 34.

The first embodiment is as follows:

an electrical test apparatus, as shown in fig. 1 and 2, comprises a test chamber 1, and an input table 7, a low voltage test table I6, a direct current test table 4, a low voltage test table II3, and a current test table 2 fixed to the test chamber 1. The input meter 7 is electrically connected with a power supply, the input meter 7 is electrically connected with a current regulator 12 and a voltage regulator 15, the current regulator 12 regulates the current of the circuit, and the model of the current regulator 12 is as follows: BC1, the voltage regulator 15 regulates the voltage, the model of the voltage regulator 15 is: us-52.

The input meter 7 is electrically connected with a display lamp 8, an emergency stop switch 9 and an alarm switch 11, and the current of the input meter 7 can be cut off through the emergency stop switch 9, so that the input meter 7 stops working. The alarm switch 11 comprises the following types: risym's bee calling organ and button switch, button switch and bee calling organ electricity are connected. The alarm switch 11 is used for buzzing and warning before test power transmission to prompt people nearby a test area to pay attention to safety.

Input table 7 is electrically connected to low voltage test table I6, dc test table 4, low voltage test table II3, and current test table 2. All be provided with on-off switch, work light 19 and change over switch 27 on low-voltage test table I6, low-voltage test table II3, direct current test table 4 and the current test table 2, change over switch 27 model is: LW38B-169E5710/3, is a switching power supply module, and the on-off switch includes a stop switch 17 and a run switch 18, both of which are conventional switches.

As shown in fig. 2, a standby wiring board 21 and a main wiring board 23 are arranged on the back surface of the test chamber 1, the main wiring board 23 and the standby wiring board 21 are respectively provided with a three-wire four-phase interface, a two-wire interface 22, a positive-negative interface and a current interface, and the three-wire four-phase interface, the two-wire interface 22, the positive-negative interface and the current interface on the standby wiring board 21 are all standby.

The input end of the input meter 7 is electrically connected with a power supply, the power supply in the embodiment is mains supply, the connecting lead of the output end of the input meter 7 is connected with the input end of the low-voltage test meter I6 through an electric loop of the emergency stop switch 9, the alarm switch 11, the contactor, the current regulator 12 and the voltage regulator 15, the output end of the low-voltage test meter I6 is connected with a three-phase four-wire interface, forms a closed loop and is connected with a ground wire (not shown in the figure), and the low-voltage test meter I6 is used for carrying out withstand voltage tests of 220V and 100V voltages. When the test equipment is accessed through the three-phase four-wire interface, the operation switch 18 is turned on, the voltage passes through the input table 7, the low-voltage test table I6 and the test equipment, and different voltages are adjusted through the voltage regulator 15, so that the voltage born by the test equipment is changed, and the voltage withstand test of different strength voltages is carried out on the test equipment. Low voltage test table I6 shows that the indicator light 19 is lit and the voltage gauge panel 26 shows the specific test voltage values when the withstand voltage test is performed. By opening the change-over switch 27, the switching between 220V and 100V of the commercial power can be realized, so as to change the voltage level endured by the test equipment. The stop switch 17 is turned off to stop the withstand voltage test. The type of the contactor in this embodiment is: CJ 20-63-1250.

Input table 7 and low-voltage test table II3 form a closed loop and the connection mode is the same as the electrical connection mode of low-voltage test table I6, low-voltage test table II3 is used for voltage withstand tests of 220V and 250V of mains supply, and low-voltage test table II3 is electrically connected with the two-wire interface and is connected with the ground wire. When the test equipment is accessed through the two-wire interface 22, the running switch 18 is started, current passes through the input meter 7, the low-voltage test table II3 and the test equipment, different currents and voltages are regulated through the current regulator 12 and the voltage regulator 15, so that the voltage borne by the test equipment is changed, and the test equipment is subjected to withstand voltage tests with different intensities of voltages. The low voltage test table II3 is provided with a voltage gauge board 26, and when the voltage withstand test of the test equipment is performed, the voltage gauge board 26 displays a specific test voltage value. Through the change-over switch 27, the switching between 220V and 250V of the mains supply can be realized, so as to change the voltage intensity borne by the test equipment. The stop switch 17 is turned off to stop the withstand voltage test.

The input table 7 and the direct current test table 4 form a closed loop, the connection mode is the same as that of the low voltage test table I6, the direct current power supply is used for carrying out withstand voltage tests of DC24V, DC220V and DC220V rectification, and the direct current test table 4 is electrically connected with the positive and negative interfaces to form a closed loop and is connected with the ground wire. When the test equipment is accessed through the positive and negative interfaces, the operation switch 18 is turned on, the current passes through the input meter 7, the direct current test meter 4 and the test equipment, and different currents and voltages are adjusted through the current adjuster 12 and the voltage adjuster 15, so that the voltage born by the test equipment is changed, the withstand voltage tests of different-strength voltages are performed on the test equipment, the direct current test meter 4 is also electrically connected with the display lamp 8, and the display lamp 8 can be turned on during work. A voltage instrument panel 26 is arranged on the direct current voltmeter, and the voltage instrument panel 26 can display the test voltage. By switching the switch 27, switching of the rectified voltages of DC24, DC220V and DC220 can be realized to change the voltage intensity endured by the test equipment. The stop switch 17 is turned off to stop the withstand voltage test.

The input meter 7 and the current test meter 2 form a closed loop, the electric connection mode is the same as that of the low-voltage test meter I6, the current test meter 2 carries out 0-20A current detection, and the current test meter 2 is electrically connected with the current interface and is connected with a ground wire. When the test equipment is accessed through the positive and negative interfaces, the operation switch 18 is turned on, the display lamp 8 is turned on during operation, the current instrument panel 26 is arranged on the current test meter 2, and the current instrument panel 26 displays test current. The current and voltage can be adjusted by the current regulator 12 and the voltage regulator 15, so that the meter tests the current to which the device is subjected, and the current intensity can be switched by the changeover switch 27. The stop switch 17 is turned off to stop the withstand voltage test.

Example two:

the difference between the second embodiment and the first embodiment is that, as shown in fig. 1, a chute 5 is arranged at the top of the test chamber 1 to arrange and fix the circuit wires. The upper part of the test chamber 1 is provided with a working platform 16, and the working platform 16 is used for placing a corresponding detection tool. The bottom of the test box 1 is rotatably connected with a universal wheel 14, and the test box 1 can be moved conveniently through the universal wheel 14.

A dust removing cavity 13 and a door plate for sealing the dust removing cavity 13 are arranged below the working platform 16, and as shown in fig. 2, a wire storage box 20 and a door plate for sealing the wire storage box 20 are arranged on the back of the test box 1. As shown in the attached figure 3, heat dissipation holes 25 are formed in both sides of the test box 1, and a wire hanging frame 24 is fixed in the wire storage box 20 through fastening bolts.

As shown in fig. 4 and 5, a dust remover 137 and a limiting plate 133 are arranged in the dust removing cavity 13, the dust remover 137 is fixed on the limiting plate 133, the limiting plate 133 is vertically and slidably connected with the test box 1, specifically, a sliding groove is arranged on the wire storage box 20, and a sliding block in sliding fit with the sliding groove is fixed on the limiting plate 133. The left side of the limit plate 133 is provided with two grooves, the upper groove is an upper limit groove 136, and the lower groove is a lower limit groove 136. The left side of the limiting plate 133 is provided with a limiting card 134 located on the test chamber 1, and an elastic member abutting against the test chamber 1 is fixed on the limiting card 134, and the elastic member is a spring 135 in this embodiment. The test chamber 1 below the limit plate 133 is provided with a through hole. Initially, under the action of the spring 135, the limit clip 134 extends into the lower limit groove 136 to clamp the limit plate 133, the limit clip 134 is pushed to the left, the limit clip 134 slides out of the lower limit groove 136, the limit plate 133 carries the dust collector 137 to slide downwards, and the limit plate 133 abuts against the ground. At this time, the upper limit groove 136 just slides to the position of the limit card 134, the limit card 134 is loosened, and the limit card 134 extends into the upper limit groove 136 to clamp the limit plate 133. The bottom of the limiting plate 133 is provided with a friction plate, which is a rubber plate in this embodiment.

The air inlet of the dust remover 137 is communicated with an air inlet pipe and faces the heat dissipation holes 25 on the left side, the air outlet of the dust remover 137 is communicated with an air outlet pipe 132, and the air outlet pipe 132 faces the heat dissipation holes 25 on the right side. The inlet and outlet tubes 132 are each comprised of a plurality of dust removal units, which include a convergent section 1323, a throat section 1322 and a divergent section 1321, with the throat section 1322 communicating the divergent section 1321 with the convergent section 1323. Dust holes 1324 are provided in the side walls of the throat section 1322. When the precipitator 137 is in operation, air enters the inlet duct by dissipating heat from the left side and exits from the converging section 1323 into the diverging section 1321 and creates a negative pressure at the throat section 1322. Under the action of negative pressure, impurities such as dust in the test chamber 1 enter the air inlet pipe and are discharged out of the test chamber 1 through the air outlet pipe 132 and the heat dissipation holes 25 on the right side. When air passes through the air outlet pipe 132, the working principle is the same as that of the air inlet pipe, part of dust and impurities are sucked in through the throat pipe section 1322, and then the air is discharged through the heat dissipation holes 25 on the right side.

Example three:

the difference between the third embodiment and the second embodiment is that, as shown in fig. 6 and 7, a dust removing box 32 is fixedly connected in the dust removing cavity 13 through a fastening bolt, a wire wheel 31 is rotatably connected in the wire storage box 20, a rotating shaft 34 is fixed on the left side of the wire wheel 31, and the left end of the rotating shaft 34 penetrates through the test box 1 and extends into the dust removing box 32. The right side of the rotating shaft 34 is a smooth surface, and the left side of the rotating shaft 34 is a threaded surface. The left side threaded connection of pivot 34 has the slide 33 that is located dust removal case 32, and the upper and lower both sides of slide 33 all are provided with the lug, are provided with the sliding tray with lug horizontal sliding connection on the lateral wall of dust removal case 32. The reel 31 is provided with a plurality of uniformly distributed fixing holes along the circumferential direction thereof, and the left side wall of the wire storage box 20 is provided with locking holes (not shown in the figure) corresponding to the fixing holes. The right side cover of pivot 34 is equipped with torsion spring 35, and the left side wall at storage box 20 is fixed to torsion spring 35's one end, and the other end of torsion spring 35 is fixed in the left side of line wheel 31. Still be provided with gag lever post 38 on the line wheel 31, when line wheel 31 needs to be fixed, gag lever post 38 passes the fixed orifices and stretches into in the locking hole, so carry on spacingly to line wheel 31.

The both sides of dust removal case 32 all are provided with air inlet check valve 36, and air inlet check valve 36 all communicates there is outlet duct 132, and air inlet check valve 36's air current direction is: the gas in the dust removing chamber 13 flows into the dust removing box 32 through the one-way valve.

The bottom of the dust removal box 32 is communicated with an air outlet one-way valve (not shown in the figure), the bottom of the test box 1 is fixed with a collection box 37 through a fastening bolt, the upper part of the collection box is provided with a pressure relief hole, and sponge is fixed at the pressure relief hole. The air outlet one-way valve is communicated with the collecting box 37 through an air outlet pipe 132, and the air flow direction of the air outlet one-way valve is as follows: the gas flow in the dust box 32 flows through the outlet check valve into the collection box 37.

The specific implementation process is as follows:

as shown in fig. 6 and 7, when an operator removes the electrical lead on wheel 31 from wheel 31, wheel 31 rotates counterclockwise, wheel 31 drives torsion spring 35 to store power and wheel 31 drives rotating shaft 34 to rotate, rotating shaft 34 is in threaded connection with sliding plate 33, sliding plate 33 is in sliding fit with the sliding groove through the projection, and sliding plate 33 slides towards wheel 31.

At this time, the space between the sliding plate 33 and the left side of the dust removing box 32 is increased, the air pressure is reduced and a certain suction force is formed, so that the dust removing box 32 sucks air through the air inlet check valve 36 and the air inlet pipe, the air has a certain flow speed in the air outlet pipe 132 and forms a certain negative pressure in the throat pipe section 1322, and the air outlet pipe 132 sucks dust in the dust removing cavity 13 into the dust removing box 32.

Since the torsion spring 35 stores the rotational force, the reel 31 is easily reversed, and therefore the reel 31 is restrained by the stopper rod 38.

When an operator needs to rewind the electric leads onto the reel 31, the limiting rod 38 is pulled off the reel 31, the torsion spring 35 pushes the reel 31 to rotate clockwise under the action of the torsion spring 35, the rotating shaft 34 drives the sliding plate 33 to move away from the reel 31, the sliding plate 33 extrudes the air in the dust removing box 32 and sends the air into the collecting box 37 through the air outlet one-way valve, and the air drives the dust in the dust removing box 32 into the collecting box 37, so that the purpose of collecting the dust is achieved. Since the collection tank 37 is provided with the pressure relief hole, the air in the collection tank 37 is exhausted from the pressure relief hole after reaching a certain amount, and the sponge blocks the dust from exhausting only the air.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The technology, shape and construction parts which are not described in the present invention are all known technology.

Claims

1. An electrical test apparatus, characterized in that: the device comprises a test box, and an input table, a low-voltage test table I, a direct-current test table and a low-voltage test table II which are fixed on the test box, wherein the output end of the input table is electrically connected with the input ends of the low-voltage test table I, the direct-current test table, the low-voltage test table II and the current test table respectively;

the output end of the low-voltage test meter I is electrically connected with a three-phase four-wire interface, the output end of the direct-current test meter is electrically connected with a positive electrode interface and a negative electrode interface, the output end of the low-voltage test meter II is electrically connected with a two-wire interface, and the output end of the current test meter is electrically connected with a current interface;

2. The electrical testing apparatus of claim 1, wherein: the test box is provided with a wire storage box.

3. The electrical testing apparatus of claim 2, wherein: the bottom of the test box is rotatably connected with universal wheels.

4. An electrical testing apparatus according to claim 3, wherein: the two sides of the test box are provided with heat dissipation holes.

5. The electrical testing apparatus of claim 2, wherein: a wire hanging frame is fixed in the wire storage box.

6. An electrical testing apparatus according to any one of claims 1 to 5, wherein: and working platforms are also arranged on the two sides of the test box.

7. The electrical testing apparatus of claim 6, wherein: the dust remover is characterized by further comprising a dust remover, wherein an air inlet of the dust remover is communicated with an air inlet pipe facing one side heat dissipation hole, and an air outlet of the dust remover is communicated with an air outlet pipe facing the other side heat dissipation hole.

8. The electrical testing apparatus of claim 7, wherein: the air outlet pipe and the air inlet pipe are both provided with a plurality of dust collection units, each dust collection unit comprises a contraction section, a throat pipe section and a diffusion section, the contraction section and the diffusion section are communicated through the throat pipe sections, and the throat pipe sections are provided with dust holes.

9. The electrical testing apparatus of claim 8, wherein: vertical sliding connection has the limiting plate on the proof box, and the dust remover is fixed on the limiting plate, and the below of limiting plate is provided with its through-hole of wearing out the proof box, is provided with spacing hole on the limiting plate, and horizontal sliding connection has the spacing card with spacing hole complex on the proof box, is fixed with the elastic component that offsets with the proof box on the spacing card.

10. The electrical testing apparatus of claim 9, wherein: the bottom of the limiting plate is fixed with a friction plate.