CN211719841U - Winding type power supply disc for electrical test - Google Patents

Abstract

The utility model discloses a winding type power disc for electrical test, which connects an external socket on a mounting structure with an external power supply in the electrical test process; and one end of the power line is electrically connected to the test instrument, so that the test instrument is electrically communicated with an external power supply, and the test instrument can carry out corresponding electrical tests. Because the last electric connection of power cord has the regulator device, and installs the digital display table on the regulator device, consequently, when the voltage value of test instrument input takes place undulantly, the digital display table can in time feed back the current input voltage value on the test instrument to electric test personnel. The electric test personnel carry out corresponding regulation to the voltage regulation spare according to the voltage value on the digital display table, and the voltage value on the digital display table keeps unanimous with predetermined voltage, so, cooperate through voltage regulation spare and digital display table for the voltage value in the electric test process remains stable throughout, improves the reliability of electric test result greatly.

Description

Winding type power supply disc for electrical test

Technical Field

The utility model relates to an electrical test technical field especially relates to a wound form power disc for electrical test.

Background

The power panel is a movable power panel wound with wires and cables, and a national standard socket or an industrial socket is usually arranged on the power panel. In the electrical test of an electric power system, the traditional winding type power supply disc can provide power for a test instrument through a power line with a certain length in a long distance, and the power on-off function of the test instrument is realized. In practical use, the power supply required by the electrical test has high precision requirement on the power supply voltage, but in many cases, the power supply voltage which can be used by electrical testers is unstable and may be too high or too low, which causes work interruption. Meanwhile, the power supply voltage cannot be monitored in real time, so that the reliability of the electrical test result is seriously influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, a winding type power supply disc for an electrical test is needed, so that the power supply voltage is convenient to stabilize, and the electrical test is ensured to be stably carried out; meanwhile, the power supply voltage can be monitored in real time.

The technical scheme is as follows:

a wrap-around power disc for electrical testing, comprising: the mounting structure is provided with an external socket, and the external socket is used for being electrically connected with an external power supply; one end of the power line is wound on the mounting structure and is electrically connected with the external socket, and the other end of the power line is used for being electrically connected with a test instrument; and the voltage regulating device is arranged on the mounting structure and is electrically connected with the power line, a digital display meter is arranged on the voltage regulating device and is used for displaying the voltage value input by the test instrument, and the voltage regulating device is used for regulating the voltage value input by the test instrument.

In the winding type power panel for the electrical test, the external socket on the mounting structure is connected with an external power supply in the electrical test process; and one end of the power line is electrically connected to the test instrument, so that the test instrument is electrically communicated with an external power supply, and the test instrument can carry out corresponding electrical tests. Because the last electric connection of power cord has the regulator device, and installs the digital display table on the regulator device, consequently, through the digital display table for whether the electric test personnel can monitor the voltage value of input constantly satisfies the operating requirement of test instrument. When the voltage value input by the test instrument fluctuates, namely the voltage input by the test instrument is larger or smaller than the preset voltage, the digital display meter can feed back the current input voltage value on the test instrument to the electrical test personnel in time. The electric test personnel carry out corresponding regulation to the voltage regulation spare according to the voltage value on the digital display table, and the voltage value on the digital display table keeps unanimous with predetermined voltage, so, cooperate through voltage regulation spare and digital display table for the voltage value in the electric test process remains stable throughout, improves the reliability of electric test result greatly.

The principle and effect of the present invention will be further explained by combining the above scheme:

in one embodiment, the voltage regulating device is a thyristor module, and the thyristor module is electrically connected with the power line.

In one embodiment, the winding power panel for electrical test further includes a leakage protector mounted on the mounting structure, and the leakage protector is electrically connected to the power line.

In one embodiment, the mounting structure comprises a bracket and a wire spool rotatably mounted on the bracket, the external socket and the voltage regulating device are both arranged on the wire spool, and the power line is wound on the wire spool.

In one embodiment, the mounting structure further comprises a rotating shaft, and the wire spool is mounted on the bracket through the rotating shaft.

In one embodiment, the bracket comprises a mounting part and a support leg connected to the mounting part, and the wire spool is rotatably arranged on the mounting part.

In one embodiment, the bracket further comprises a wire blocking part connected to the mounting part, and the wire blocking part is arranged opposite to the disc surface of the wire spool.

In one embodiment, the winding type power panel for the electrical test further comprises a plug and a detection circuit arranged in the plug, the detection circuit is electrically connected with the power line, the detection circuit is used for detecting the wiring state of the power line on the plug, and the plug is used for being plugged in a socket of the test instrument.

In one embodiment, the detection circuit includes a first connection end, a second connection end, a third connection end, a first indicator light, a second indicator light, and a third indicator light, two ends of the first indicator light are respectively connected to the second connection end and the third connection end, two ends of the second indicator light are respectively connected to the first connection end and the second connection end, two ends of the third indicator light are respectively connected to the first connection end and the third connection end, the first indicator light, the second indicator light, and the third indicator light are connected in parallel, and the first connection end, the second connection end, and the third connection end are respectively connected to a fire end, a zero line end, and a ground end of the power line.

In one embodiment, the plug comprises a shell and three pins arranged on the shell, and the detection circuit is arranged in the shell.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a wound power disc for electrical testing according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a plug according to an embodiment of the present invention;

fig. 3 is a schematic circuit diagram of a detection circuit according to an embodiment of the present invention.

Description of reference numerals:

100. the winding type power supply panel for the electrical test comprises a winding type power supply panel 110, a mounting structure 111, a wire winding panel 112, a support, 1121, a mounting portion 1122, a support leg 1123, a wire blocking portion 113, a rotating shaft 120, a power line 130, a voltage regulating device 131, a digital display meter 132, a regulating valve 140, a leakage protector 150, a plug 151, a shell 1511, a first shell, 1512, a second shell, 152, a plug pin, 160, a detection circuit 161, a first connecting end 162, a second connecting end 163, a third connecting end 164, a first indicator light 165, a second indicator light 166, a third indicator light 167, a carbon film resistor 168 and a diode.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the present invention, the terms "first" and "second" do not denote any particular quantity or order, but are merely used to distinguish names.

In one embodiment, referring to fig. 1, a winding power panel 100 (hereinafter referred to as a power panel 100) for electrical testing includes: mounting structure 110, power cord 120, and voltage regulating device 130. An external socket (not shown) is provided on the mounting structure 110. The external socket is used for being electrically connected with an external power supply. One end of the power cord 120 is wound around the mounting structure 110 and electrically connected to an external socket, and the other end of the power cord 120 is used for electrically connecting to a test instrument. The voltage regulating device 130 is installed on the installation structure 110 and electrically connected to the power line 120, and the digital display meter 131 is disposed on the voltage regulating device 130. The digital display meter 131 is used for displaying the voltage value input by the test instrument. The voltage regulator 130 is used to regulate the voltage value input by the testing instrument.

In the winding type power panel 100 for electrical test, an external socket on the mounting structure 110 is connected to an external power supply during the electrical test; one end of the power line 120 is electrically connected to the testing instrument, so that the testing instrument is electrically connected to an external power source, and the testing instrument can perform corresponding electrical tests. Because the power line 120 is electrically connected with the voltage regulating device 130, and the voltage regulating device 130 is provided with the digital display meter 131, the electrical tester can constantly monitor whether the input voltage value meets the working requirement of the test instrument through the digital display meter 131. When the voltage value input by the testing instrument fluctuates, that is, the voltage input by the testing instrument is larger or smaller than the predetermined voltage, the digital display meter 131 can feed back the current input voltage value of the testing instrument to the electrical testing personnel in time. The electric test personnel correspondingly adjust the voltage regulating device 130 according to the voltage value on the digital display meter 131 until the voltage value on the digital display meter 131 is consistent with the preset voltage, so that the voltage regulating device 130 is cooperatively matched with the digital display meter 131, the voltage value in the electric test process is always kept stable, and the reliability of the electric test result is greatly improved.

The digital display meter 131 is a voltmeter and is electrically connected in parallel, that is, the power supply line 120 and the digital display meter 131 are connected in parallel to an external outlet. The predetermined voltage of the present embodiment is 220V.

Optionally, the mounting manner of the digital display meter 131 on the silicon controlled module may be injection molding, bonding, clamping, bolt connection, or the like.

It should be noted that the power line 120 is connected to the external socket in a terminal connection manner, and taking three-phase lines as an example, the external socket has three copper terminals corresponding to the live line, the zero line and the ground line of the external power supply, respectively, and the three-phase lines on the power line 120 are connected to the three copper terminals, respectively. Meanwhile, the power line 120 is connected to the test instrument through a terminal.

Further, referring to fig. 1, the voltage regulating device 130 is a thyristor module. The silicon controlled module is electrically connected with the power line 120, so that the silicon controlled module is connected between the power line 120 and an external socket, and the silicon controlled module can stably adjust the input voltage on the test instrument. Wherein, be equipped with governing valve 132 on the silicon controlled rectifier module, through rotating governing valve 132, can adjust the input voltage value on the test instrument.

It should be noted that the thyristor module is a power semiconductor module, also called a thyristor module, and adopts a module packaging form, and a high-power semiconductor device with a four-layer structure of three PN junctions is provided. Wherein, three PN junctions correspond to three electrodes on the device housing: the electrode led out by the first layer of the P-type semiconductor is called an anode A, the electrode led out by the third layer of the P-type semiconductor is called a control electrode G, and the electrode led out by the fourth layer of the N-type semiconductor is called a cathode K. In the actual voltage regulation process, an alternating current voltage regulation circuit connection mode is usually adopted, namely, two unidirectional thyristors are connected in anti-parallel or bidirectional thyristors are adopted, so that the positive half cycle and the negative half cycle of the alternating current are symmetrically controlled, and the purpose of conveniently regulating the magnitude of the output alternating voltage is achieved. The specific connection mode of the silicon controlled module in the circuit is not an improved object of the present embodiment, and the specific connection mode of the circuit may refer to the existing literature and is not described herein again.

Specifically, the controllable silicon module can specifically select SKKT250/12E, SKKT210/12(16) E, 210A/1200V (1600V)/2U and other models of Ximenkang; optionally, it can be selected from Yingfei TT140N18KOF, etc. Of course, the circuit connections of different models can be directly referred to the respective specifications.

Optionally, the silicon controlled rectifier module is mounted on the mounting structure 110 by a bolt connection, a pin connection, a rivet connection, a snap connection, or the like.

Further, referring to fig. 1, the power strip 100 for electrical testing further includes a leakage protector 140 mounted on the mounting structure 110. The earth leakage protector 140 is electrically connected to the power line 120. Thus, the leakage protector 140 can effectively prevent the occurrence of fatal dangerous personal electric shock due to leakage faults in the electrical test process, and greatly ensure the personal safety of electrical test personnel. Meanwhile, the earth leakage protector 140 also has overload and short-circuit protection functions, and ensures safe operation of the line in the electrical test process.

Alternatively, the earth leakage protector 140 may be an earth leakage protection relay, an earth leakage protection switch, and an earth leakage protection socket.

Specifically, the leakage protector 140 has four connection terminals, two each at the top and bottom, during installation, the live wire end at the upper end of the leakage protector 140 is connected with the live wire end of the external socket, and the zero wire end at the upper end of the leakage protector 140 is connected with the zero wire end of the external socket; the live wire end at the lower end of the leakage protector 140 is connected to the live wire of the power cord 120, and the neutral wire end at the lower end of the leakage protector 140 is connected to the neutral wire end of the power cord 120. Of course, the specific structure and more specific connection manner of the earth leakage protector 140 can refer to the existing documents. Wherein, the connection terminal is a copper sheet or copper bar structure.

In one embodiment, referring to fig. 1, the mounting structure 110 includes a bracket 112 and a wire spool 111 rotatably mounted on the bracket 112. The external socket and the voltage regulating device 130 are both provided on the wire spool 111. The power cord 120 is wound around the wire spool 111. Thus, the bracket 112 enables the wire spool 111 to be stably supported, and ensures that the power line 120 is stably wound on the wire spool 111.

Specifically, referring to fig. 1, the external socket and the voltage regulator 130 are respectively located on two side surfaces of the wire spool 111. Wherein, the external socket is a national standard socket or an industrial socket. Meanwhile, the external sockets are generally provided in four, and the four external sockets are spaced apart from each other on one side of the wire spool 111.

Further, referring to fig. 1, the mounting structure 110 further includes a rotating shaft 113. The wire spool 111 is mounted on the bracket 112 through the rotating shaft 113, so that the wire spool 111 is stably mounted on the bracket 112 through the rotating shaft 113, thereby making the rotation of the wire spool 111 on the bracket 112 smoother.

Alternatively, the mounting manner of the wire spool 111 on the bracket 112 through the rotating shaft 113 may be as follows: the rotating shaft 113 is fixedly arranged on one side surface of the wire spool 111; then, the bracket 112 is provided with a shaft hole matched with the rotating shaft 113; alternatively, the rotating shaft 113 is fixed on the bracket 112, and a shaft hole matched with the rotating shaft 113 is formed on one side surface of the wire spool 111.

In one embodiment, referring to fig. 1, the bracket 112 includes a mounting portion 1121 and a leg 1122 connected to the mounting portion 1121. The wire spool 111 is rotatably mounted on the mounting portion 1121. Thus, the mounting portion 1121 is stably supported by the legs 1122, so as to ensure stable operation of the power panel 100. Meanwhile, the mounting portion 1121 is raised by the legs 1122 so that the wire spool 111 is kept at a distance from the ground, thereby enabling the wire spool 111 to freely rotate on the mounting portion 1121.

Specifically, referring to fig. 1, two support legs 1122 are provided, and the two support legs 1122 are connected to the bottom of the mounting portion 1121 at intervals, so that the two support legs 1122 are provided in the embodiment to ensure that the mounting portion 1121 has two support points, so that the mounting portion 1121 is more stably supported on the ground, and thus the stability of the power panel 100 is improved.

Alternatively, the legs 1122 may be attached to the mounting portion 1121 by bolting, pinning, snapping, integrally forming, or the like. The integral molding mode can be extrusion molding, casting molding, die casting molding, injection molding and the like.

Further, referring to fig. 1, the bracket 112 further includes a wire stopper 1123 connected to the mounting portion 1121. The stopper 1123 is disposed opposite to the surface of the wire spool 111. In this way, the wire blocking portion 1123 is disposed opposite to the disk surface of the spool 111, so that the power wire 120 is located on the wire blocking portion 1123 and the disk surface of the spool 111. When the wire winding disc 111 performs wire winding operation on the power wire 120, the wire blocking portion 1123 limits the power wire 120 to the wire winding disc 111 and the wire blocking portion 1123, and the power wire 120 is prevented from jumping to be separated from the disc surface of the wire winding disc 111 in the wire winding process, so that the wire winding operation stability of the power wire 120 is greatly improved, and the power wire 120 is ensured to be stably wound on the wire winding disc 111.

Specifically, referring to fig. 1, the wire blocking portion 1123 and the mounting portion 1121 are integrated, and the wire blocking portion 1123 and the supporting leg 1122 are respectively connected to two opposite ends of the mounting portion 1121. Meanwhile, the wire stopper 1123 is a rod-shaped structure having one end connected to the mounting portion 1121 and the other end extending above the surface of the wire spool 111.

In one embodiment, referring to fig. 1 and fig. 3, the power strip 100 for electrical testing further includes a plug 150 and a detection circuit 160 embedded in the plug 150. The detection circuit 160 is electrically connected to the power cord 120, and the detection circuit 160 is used for detecting a connection state of the power cord 120 on the plug 150. Plug 150 is adapted to be plugged into a socket of a test instrument. Because the place of the electrical test is not fixed, whether the electrical tester damages and misconnects the connected power socket is unclear, and if the power socket is in a non-electricity or abnormal power supply condition, the wiring fault of the power line 120 needs to be analyzed and checked, and the working time is delayed, therefore, the detection circuit 160 is arranged in the plug 150, the wiring state of the power line 120 and the plug 150 is detected, the power line 120 and the plug 150 are ensured to be accurately connected, and the power panel 100 is ensured to stably supply power to the test instrument.

Further, referring to fig. 3, the detection circuit 160 includes a first connection end 161, a second connection end 162, a third connection end 163, a first indicator light 164, a second indicator light 165, and a third indicator light 166. Both ends of the first indicator lamp 164 are connected to the second connection terminal 162 and the third connection terminal 163, respectively. Both ends of the second indicator light 165 are connected to the first connection end 161 and the second connection end 162, respectively. Both ends of the third indicator 166 are connected to the first connection end 161 and the third connection end 163, respectively. The first indicator lamp 164, the second indicator lamp 165, and the third indicator lamp 166 are connected in parallel. The first, second and third connection ends 161, 162 and 163 are respectively connected to the live, neutral and ground terminals of the power cord 120.

In this regard, referring to fig. 3, fig. 3 is a circuit diagram of the detection circuit 160. When the live wire of the power cord 120 is connected to the first connection end 161, the neutral wire is connected to the second connection end 162, and the ground wire is connected to the third connection end 163, that is, when the power cord 120 is normally connected to the plug 150, the first indicator light 164 is not turned on, the second indicator light 165 is turned on, and the third indicator light 166 is turned on; when the live wire and the neutral wire of the power cord 120 are connected in reverse, i.e., the live wire is connected to the second connection end 162 and the neutral wire is connected to the first connection end 161, the first indicator light 164 is on, the second indicator light 165 is on, and the third indicator light 166 is off; when there is no neutral or a neutral break in the circuit, i.e., the neutral is not connected to the second connection 162, the first indicator light 164 is not lit, the second indicator light 165 is not lit, and the third indicator light 166 is lit; when the ground line is absent or broken in the circuit, i.e., the ground line is not connected to the third connection terminal 163, the first indicator lamp 164 is not turned on, the second indicator lamp 165 is turned on, and the third indicator lamp 166 is not turned on; when there is a lack of hot wire or a hot wire break in the circuit, i.e. hot wire is not connected to the first connection 161, the first indicator light 164 is not lit, the second indicator light 165 is not lit, the third indicator light 166 is not lit, etc. Of course, there are also different connection states, which can be identified by corresponding indicator lights, which are not listed here.

Therefore, the connection relationship of the detection circuit 160 is specifically designed in this embodiment, so that the electrical tester can quickly analyze the wiring fault of the power line 120 on the plug 150 according to the on-off conditions of different indicator lights, and correct the connection of the power line 120 in time, thereby effectively saving the fault troubleshooting time of the electrical tester and greatly improving the test efficiency of the electrical test.

Further, referring to fig. 3, the first indicator light 164, the second indicator light 165 and the third indicator light 166 are all light emitting diodes, and the detection circuit 160 further includes three carbon film resistors 167 respectively connected in series with the first indicator light 164, the second indicator light 165 and the third indicator light 166. It should be noted that, in the present embodiment, alternating current is supplied to the detection circuit 160.

In one embodiment, referring to fig. 3, the detection circuit 160 further includes three diodes 168, and the three diodes 168 are respectively connected in series with the first indicator lamp 164, the second indicator lamp 165, and the third indicator lamp 166.

In one embodiment, referring to fig. 2, the plug 150 includes a housing 151 and three pins 152 disposed on the housing 151. The detection circuit 160 is built in the housing 151. Thus, the three pins 152 are respectively inserted into the three jacks on the test instrument, so that the test instrument is stably powered.

Further, referring to fig. 2, the housing 151 includes a first housing 1511 and a second housing 1512, and the first housing 1511 is detachably mounted on the second housing 1512, so that in the process of connecting the power cord 120 and the plug 150, only the first housing 1511 needs to be removed from the second housing 1512 to complete the connection operation of the power cord 120.

Specifically, referring to fig. 2, the first housing 1511 is connected to the second housing 1512 by a snap-fit manner, the three pins 152 are disposed on the second housing 1512, the first connection end 161, the second connection end 162 and the third connection end 163 are disposed on the first housing 1511, and the three pins 152 are electrically connected to the first connection end 161, the second connection end 162 and the third connection end 163 one by one. Meanwhile, the first indicator lamp 164, the second indicator lamp 165, and the third indicator lamp 166 are also provided on the first case 1511.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A wound form power pack for electrical test, comprising:

the mounting structure is provided with an external socket, and the external socket is used for being electrically connected with an external power supply;

one end of the power line is wound on the mounting structure and is electrically connected with the external socket, and the other end of the power line is used for being electrically connected with a test instrument; and

the voltage regulating device, the voltage regulating device install mounting structure is last and with power cord electric connection, be equipped with the digital display table on the voltage regulating device, the digital display table is used for showing the voltage value of test instrument input, the voltage regulating device is used for adjusting the voltage value of test instrument input.

2. The wound power supply tray for electrical tests of claim 1, wherein the voltage regulating device is a thyristor module, and the thyristor module is electrically connected to the power line.

3. The power strip of claim 1, further comprising a leakage protector mounted on the mounting structure, the leakage protector being electrically connected to the power cord.

4. The wound power disc for electrical tests of claim 1, wherein the mounting structure comprises a bracket and a wire spool rotatably mounted on the bracket, the external socket and the voltage regulator are both disposed on the wire spool, and the power wire is wound on the wire spool.

5. The power strip of claim 4, wherein the mounting structure further comprises a shaft, and the wire spool is mounted on the bracket through the shaft.

6. The power strip of claim 4, wherein the bracket comprises a mounting portion and a leg connected to the mounting portion, and the wire spool is rotatably mounted on the mounting portion.

7. The wound power disc for electrical tests of claim 6, wherein the bracket further comprises a wire blocking part connected to the mounting part, the wire blocking part being disposed opposite to the disc surface of the wire disc.

8. The power strip of any one of claims 1 to 7, further comprising a plug and a detection circuit disposed in the plug, wherein the detection circuit is electrically connected to the power line, the detection circuit is configured to detect a connection status of the power line to the plug, and the plug is configured to be plugged into a socket of the testing apparatus.

9. The wound power disc for electrical tests of claim 8, wherein the detection circuit comprises a first connection end, a second connection end, a third connection end, a first indicator light, a second indicator light and a third indicator light, two ends of the first indicator light are respectively connected to the second connection end and the third connection end, two ends of the second indicator light are respectively connected to the first connection end and the second connection end, two ends of the third indicator light are respectively connected to the first connection end and the third connection end, the first indicator light, the second indicator light and the third indicator light are connected in parallel, and the first connection end, the second connection end and the third connection end are respectively connected to a live wire end, a neutral wire end and a ground wire end of the power line.

10. The wound power tray for electrical testing of claim 8, wherein the plug comprises a housing and three pins disposed on the housing, the detection circuit being embedded in the housing.

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