CN113721141A - Voltage withstand detection device for fuse - Google Patents
Voltage withstand detection device for fuse Download PDFInfo
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- CN113721141A CN113721141A CN202110946676.XA CN202110946676A CN113721141A CN 113721141 A CN113721141 A CN 113721141A CN 202110946676 A CN202110946676 A CN 202110946676A CN 113721141 A CN113721141 A CN 113721141A
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- 238000001514 detection method Methods 0.000 title claims abstract description 51
- 230000008859 change Effects 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 2
- 238000010891 electric arc Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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Abstract
The utility model provides a fuse withstand voltage detection device, which comprises a box body, an alarm, a relay interface, a detection area, a capacitance sensor and a coil; by two fuse A sockets and fuse B sockets of detection zone, the fuse is placed and is accomplished the back at fuse A socket and fuse B socket, fuse A pilot lamp and fuse B pilot lamp light, and the fuse waits to detect the state, through setting up the magnitude of voltage to the fuse, earlier through setting up the rated voltage of key to the fuse, also be exactly the maximum voltage that the fuse can bear, the magnitude of voltage that sets for shows in the display screen, detection switch is opened to another key, detect the withstand voltage's of fuse degree of bearing. Therefore, the voltage and the current of the fuse can be detected through the set rated voltage value.
Description
Technical Field
The invention relates to the technical field of fuses, in particular to a fuse withstand voltage detection device.
Background
A fuse, also called a fuse, is an electrical component installed in an electrical circuit to ensure the safe operation of the circuit. The fuse has the following functions: when the circuit is in fault or abnormal, the circuit is raised continuously, and the raised current may damage some important devices or valuable devices in the circuit, or may burn the circuit or even cause fire, so that the fuse will fuse itself and cut off the current when the current is raised to a certain height and for a certain time, thereby protecting the safe operation of the circuit.
However, the withstand voltage of the fuse means that the fuse can reliably cut off the current after being blown. If the voltage is too high in the using process, arc discharge can be generated at the fused part or the broken fuse and a fuse shell (metal part), the short-circuited circuit can have current passing, the fault is enlarged, and danger is caused.
Disclosure of Invention
An object of the embodiments of the present disclosure is to provide a fuse withstand voltage detection apparatus, which can accurately detect a rated voltage of a fuse by setting a maximum voltage that can be borne.
Therefore, the present disclosure provides a fuse withstand voltage detection device, including: the detection area is arranged on one side in the box body, at least two fuse sockets are arranged on the detection area and are respectively a fuse A socket and a fuse B socket, the fuse A socket and the fuse B socket are arranged on one side in the box body, and after the fuse A socket and the fuse B socket are connected, a fuse A indicator lamp and a fuse B indicator lamp display the fuse A socket and the fuse B socket; the relay interface is arranged on the inner wall of the case, one end of the relay interface is connected to a power supply, and the other end of the relay interface is connected to the coil and is connected with the fuse A jack and the fuse B jack; the coil is electrically connected with the relay interface, the fuse A jack and the fuse B and is also electrically connected with the alarm; the capacitance sensor is electrically connected with the detection switch, and comprises a normally open withstand voltage proximity switch, a normally closed withstand voltage proximity switch and an outgoing line type withstand voltage proximity switch; the alarm is arranged at the top of the box body, is electrically connected with the capacitance sensor and the coil and is used for giving an alarm to remind when the set rated voltage is greater than or equal to the circuit voltage.
Preferably, the box body further comprises a power switch, a setting key, a display screen, a power supply and a detection switch, and the power switch is used for detecting and controlling the voltage-withstanding instruction of the fuse.
Preferably, the power supply is a direct current power supply, and a direct current voltage is adopted.
Preferably, the relay interface comprises a relay normally-open indicator light, one end of a switch socket of the relay interface is connected to the positive pole of the power supply, and the other normally-open socket is connected to the positive pole of the relay normally-open indicator light; the negative pole of the relay normally open indicator light and the negative pole of the relay normally closed indicator light are both connected with the negative pole of the power supply.
Preferably, the relay interface includes relay normally closed pilot lamp, the coil socket of relay normally closed pilot lamp, the negative pole of power is connected to one end, the negative pole of coil is connected to the other end, its normally closed socket is connected to the positive pole of relay normally closed pilot lamp, the relay normally opens the negative pole of pilot lamp and the negative pole of relay normally closed pilot lamp and all links to each other with the negative pole of power.
Preferably, the detection area includes fuse A socket and fuse B socket, and after the fuse that awaits measuring is inserted in fuse A socket and fuse B socket, and fuse A pilot lamp and fuse B pilot lamp are lighted respectively.
Preferably, the fuse a socket and the fuse B socket detect whether the fuse has the highest working voltage in a normal working state, the fuse can only be used in a circuit with the working voltage less than or equal to the working voltage, that is, the selected working voltage of the fuse is greater than the normal voltage in the circuit, and the fuse withstand voltage detection is realized.
Preferably, the capacitance sensor is a variable capacitor, two parameters of the variable capacitor are kept unchanged, and the change of the parameters can be converted into the change of single capacitance only by changing the other parameter, and then the change of the capacitance is converted into an electric signal through a matched measuring circuit and is output.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through a detection area, the detection area comprises a fuse A socket and a fuse B socket, after a fuse is placed in the fuse A socket and the fuse B socket, a fuse A indicator lamp and a fuse B indicator lamp are turned on, and the fuse is in a state to be detected, a voltage value is set for the fuse, a rated voltage of the fuse, namely the maximum voltage which can be borne by the fuse, is firstly set through a setting key, the set voltage value is displayed in a display screen, a detection switch is turned on through a key, or a finger is close to a capacitance sensor, at the moment, if the fuse is intact, the fuse A indicator lamp and the fuse B indicator lamp are respectively turned on, a relay normally open indicator lamp is turned on, and a relay normally open indicator lamp is turned on; when the detection switch is released, the normally closed indicator lamp of the relay and the normally closed indicator lamp of the relay are lightened, and the fuse is proved to be intact; if the fuse has too high voltage, the fuse can be in the fused position or the broken fuse and the fuse shell are subjected to arc discharge, the fuse A indicator lamp and the fuse B indicator lamp cannot have brightness respectively at the moment, and the detection switch is loosened, so that the relay normally-closed indicator lamp and the relay normally-closed indicator lamp cannot have brightness, and the fuse is damaged. When the voltage withstanding of the fuse is detected, an alarm is sent to remind that the fuse is damaged when the rated voltage is greater than or equal to the circuit voltage according to the set voltage value. Here, the fuse withstand voltage value may be set according to the rated voltage of each device. Through the arrangement, the voltage of different devices can be installed by detecting the rated voltage of the fuse, so that the safety of the different devices is improved.
Drawings
To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can also obtain other drawings according to the drawings without inventive labor.
FIG. 1 is a schematic view of an appearance structure of a fuse withstand voltage testing apparatus according to the present invention;
FIG. 2 is a schematic diagram of a detection area of a fuse withstand voltage detection apparatus according to the present invention.
Wherein, in the figures, the respective reference numerals:
1. a box body; 2. a power switch; 3. setting a key; 4. a display screen; 5. a power source; 6. a detection switch; 7. an alarm; 8. a relay interface; 81. a relay normally open indicator light; 82. a relay normally closed indicator light; 9. a detection zone; 91. a fuse A jack; 911. fuse A pilot lamp; 92. a fuse B jack; 921. fuse B indicator light; 10. a capacitive sensor; 11. and a coil.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The inventor finds that when the voltage is too high in the using process, arc discharge can be caused at a fused part or a broken fuse and a fuse shell, the short-circuited circuit can have current passing, faults are enlarged, and dangers are caused.
Referring to fig. 1 to 2, in an embodiment of the present invention, a device for detecting withstand voltage of a fuse includes a box 1, an alarm 7, a relay interface 8, a detection area 9, a capacitance sensor 10, and a coil 11.
Referring to fig. 2, a detection area 9 is disposed on one side of the interior of the box 1, and the detection area 9 has at least two fuse sockets, which are a fuse a socket 91 and a fuse B socket 92, respectively, the fuse a socket 91 and the fuse B socket 92 are disposed on one side of the interior of the box 1, and after the fuse a socket 91 and the fuse B socket 92 are connected, they are displayed by a fuse a indicator lamp 911 and a fuse B indicator lamp 921. By two fuse A sockets 91 and fuse B sockets 92 of detection zone 9, the fuse is placed and is accomplished the back at fuse A socket 91 and fuse B socket 92, fuse A pilot lamp 911 and fuse B pilot lamp 921 are lighted, and the fuse waits to detect the state, through setting up the magnitude of voltage to the fuse, earlier through setting up the rated voltage of key 3 to the fuse, also be exactly the maximum voltage that the fuse can bear, the magnitude of voltage of settlement shows in display screen 4, detection switch 6 is opened to another key, detect the withstand voltage's of fuse tolerance degree. Therefore, the voltage and the current of the fuse can be detected through the set rated voltage value.
Referring to fig. 2, the relay interface 8 is disposed on the inner wall of the chassis, and one end of the relay interface 8 is connected to the power supply 5, and the other end is connected to the coil 11, and is connected to the fuse a socket 91 and the fuse B socket 92. When the starting process is carried out, the power supply 5 inputs electric energy, the relay interface 8 is connected with the fuse A jack 91 and the fuse B jack 92, the relays are provided with induction mechanisms reflecting certain variables such as current, voltage and power of the fuses, and actuating mechanisms capable of realizing on-off control on a controlled circuit; an intermediate mechanism for coupling and isolating the input quantity, performing functional processing and driving the output part is arranged between the input part and the output part of the relay, thereby detecting the detected withstand voltage value of the fuse withstand voltage detection.
Referring to fig. 2, the coil 11 is electrically connected to the relay socket 8, the fuse a socket 91 and the fuse B, and is also electrically connected to the alarm 7. When the voltage withstanding of the fuse is detected, an alarm is sent to remind that the fuse is damaged when the rated voltage is greater than or equal to the circuit voltage according to the set voltage value. Here, the fuse withstand voltage value may be set according to the rated voltage of each device. Therefore, the voltage of different devices can be installed by detecting the rated voltage of the fuse, and the safety of different devices is improved.
Referring to fig. 2, the capacitance sensor 10 is electrically connected to the detection switch 6, and includes a normally open voltage-withstanding proximity switch, a normally closed voltage-withstanding proximity switch, and an outlet voltage-withstanding proximity switch. When the detection switch 6 is turned on by one key or a finger approaches the capacitive sensor 10, at the moment, if the fuse is intact, the fuse A indicator lamp 911 and the fuse B indicator lamp 921 are respectively lighted, the relay normally-open indicator lamp 81 is lighted, and the relay B normally-open indicator lamp is lighted; when the detection switch 6 is released, the relay normally-closed indicator lamp 82 and the relay normally-closed indicator lamp 82 are lightened, which indicates that the fuse is intact; if the voltage of the fuse is too high, arc discharge can be performed on the fused part or the broken fuse and the fuse shell, the brightness of the fuse A indicator lamp 911 and the fuse B indicator lamp 921 respectively cannot occur at the moment, and the brightness of the relay normally-closed indicator lamp 82 cannot occur when the detection switch 6 is loosened, so that the fuse is damaged. Thus, the detection circuit can convert the change in capacitance into an electric signal and output the electric signal.
Referring to fig. 1, the alarm 7 is disposed on the top of the box 1, and is electrically connected to the capacitive sensor 10 and the coil 11, and is configured to send an alarm prompt when a set rated voltage is greater than or equal to a circuit voltage. When the voltage withstanding of the fuse is detected, an alarm is sent to remind that the fuse is damaged when the rated voltage is greater than or equal to the circuit voltage according to the set voltage value. Here, the fuse withstand voltage value may be set according to the rated voltage of each device. Therefore, the voltage of different devices can be installed by detecting the rated voltage of the fuse, and the safety of different devices is improved.
Referring to fig. 1, the box 1 further includes a power switch 2, a setting key 3, a display 4, a power supply 5, and a detection switch 6, for detecting and controlling the instruction of the withstand voltage of the fuse. When voltage values need to be set for the fuses, the fuse detection device is powered on and started by starting the power switch 2, the voltage values of the fuses are set in the setting key 3 and displayed on the display screen 4, and then the detection switch 6 is turned on to enable the fuses to achieve the detection function. Therefore, the voltage and the current of the fuse can be detected.
Referring to fig. 1 and 2, the power supply 5 is a dc power supply 5, and a dc voltage is applied. The dc power supply 5 has a positive electrode and a negative electrode, and the positive electrode has a high potential and the negative electrode has a low potential, so that when the two electrodes are connected to the circuit, a constant potential difference is maintained between the two ends of the circuit, thereby forming a current from the positive electrode to the negative electrode in the external circuit. The dc power supply 5 is an energy conversion device that converts other forms of energy into electric energy to supply the circuit to maintain a steady flow of current. The dc bias voltage is a voltage to be set between the base and the emitter and between the collector and the base when the transistor is in an amplification state in the transistor amplifier circuit. Because the PN junction between the base and emitter of the transistor should be forward biased and the PN junction between the collector and base should be reverse biased to place the transistor in an amplifying state. Therefore, a circuit is provided in which the base emitter junction of the transistor is forward biased and the collector junction is reverse biased, so that the transistor operates in an amplification state. The key to making a transistor operate in an amplified state is its base voltage, which is also called bias voltage. And since the voltage setting for operating the transistor in the amplified state is provided by the dc power supply 5 when it is without a signal.
Referring to fig. 2, the relay interface 8 includes a relay normally-open indicator 81, one end of a switch socket of the relay interface 8 is connected to the positive electrode of the power supply 5, and the other normally-open socket is connected to the positive electrode of the relay normally-open indicator 81; the cathode of the relay normally open indicator light 81 and the cathode of the relay normally closed indicator light 82 are both connected to the cathode to the power supply 5. The relay is a device for controlling large voltage by small voltage, and the normally open state of the relay means that the contact is opened in the normal state of the relay, namely, when the relay is not electrified or does not act. Similarly, a normally closed point is closed. Normally open point and normally closed point refer to under the not circular telegram state, the state of relay contact, and when the action after the relay got electric, normally closed point can open, and normally open point will be closed.
Referring to fig. 2, the relay interface 8 includes a relay normally-closed indicator 82, a coil 11 socket of the relay normally-closed indicator 82, one end of the relay normally-closed indicator 82 is connected to the negative electrode of the power supply 5, the other end of the relay normally-closed indicator 82 is connected to the negative electrode of the coil 11, the normally-closed socket of the relay normally-closed indicator is connected to the positive electrode of the relay normally-closed indicator 82, and the negative electrodes of the relay normally-open indicator 81 and the relay normally-closed indicator 82 are both connected to the negative electrode of the power supply 5. The relay has an input circuit, typically connected to a low voltage power supply 5, and an output circuit, typically connected to a high voltage power supply 5. The input loop is provided with an electromagnet coil 11, when current passes through the input loop, the electromagnet generates magnetic force, the contact of the output loop is connected through the attraction force, and then the output loop is conducted.
Referring to fig. 2, the detection area 9 includes a fuse a socket 91 and a fuse B socket 92, and after the fuse to be detected is inserted into the fuse a socket 91 and the fuse B socket 92, a fuse a indicator 911 and a fuse B indicator 921 are respectively turned on. Therefore, when the current abnormally rises to a certain height and heat, the fuse fuses to cut off the current, and the function of protecting the safe operation of the circuit can be achieved.
Referring to fig. 2, the fuse a socket 91 and the fuse B socket 92 detect whether the fuse has the highest working voltage in the normal working state, and the fuse can only be used in the circuit with the working voltage less than or equal to the working voltage, i.e. the selected working voltage of the fuse must be greater than the normal voltage in the circuit, and the fuse withstand voltage detection is realized. Therefore, when the current abnormally rises to a certain height and heat, the fuse fuses to cut off the current, and the safe operation of the circuit can be protected.
Referring to fig. 2, the capacitance sensor 10 is a variable capacitor, and two parameters are kept unchanged, and only the other parameter is changed, so that the change of the parameter can be converted into the change of single capacitance, and the change of the capacitance is converted into an electrical signal through a matched measuring circuit to be output. However, the initial capacitance of the capacitive sensor 10 is small, and the influence of interference of lead capacitance and parasitic capacitance is large; on the other hand, the output characteristic of the capacitive sensor 10 is nonlinear.
The working principle and the using process of the invention are as follows: in the using process, the detection area 9 comprises a fuse A socket 91 and a fuse B socket 92, after the fuse is placed in the fuse A socket 91 and the fuse B socket 92, a fuse A indicator lamp 911 and a fuse B indicator lamp 921 are lighted, and the fuse is in a state to be detected, through setting a voltage value for the fuse, firstly, the rated voltage of the fuse, namely the maximum voltage which the fuse can bear, is set through a setting key 3, the set voltage value is displayed in a display screen 4, then, a key is used for starting a detection switch 6, or a finger is close to a capacitance sensor 10, at the moment, if the fuse is intact, the fuse A indicator lamp 911 and the fuse B indicator lamp 921 are respectively lighted, a relay normally-open indicator lamp 81 is lighted, and a relay B normally-open indicator lamp is lighted; when the detection switch 6 is released, the relay normally-closed indicator lamp 82 and the relay normally-closed indicator lamp 82 are lightened, which indicates that the fuse is intact; if the voltage of the fuse is too high, arc discharge can be performed on the fused part or the broken fuse and the fuse shell, the brightness of the fuse A indicator lamp 911 and the fuse B indicator lamp 921 respectively cannot occur at the moment, and the brightness of the relay normally-closed indicator lamp 82 cannot occur when the detection switch 6 is loosened, so that the fuse is damaged. When the voltage withstanding of the fuse is detected, an alarm is sent to remind that the fuse is damaged when the rated voltage is greater than or equal to the circuit voltage according to the set voltage value. Here, the fuse withstand voltage value may be set according to the rated voltage of each device. Through the arrangement, the installation of rated voltage of different devices is realized by detecting the rated voltage of the fuse, and the safety of different devices is improved.
To this end, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. 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 (8)
1. A withstand voltage testing apparatus for a fuse, comprising:
the detection area is arranged on one side in the box body, at least two fuse sockets are arranged on the detection area and respectively are a fuse A socket and a fuse B socket, the fuse A socket and the fuse B socket are arranged on one side in the box body, and after the fuse A socket and the fuse B socket are connected, the fuse A indicator lamp and the fuse B indicator lamp display the fuse A socket and the fuse B socket;
the relay interface is arranged at the case, one end of the relay interface is connected to the power supply, the other end of the relay interface is connected to the coil, and the relay interface is connected with the fuse A jack and the fuse B jack;
the coil is electrically connected with the relay interface, the fuse A socket and the fuse B and is also electrically connected with the alarm;
the capacitance sensor is electrically connected with the detection switch, and comprises a normally open withstand voltage proximity switch, a normally closed withstand voltage proximity switch and an outlet line type withstand voltage proximity switch;
and the alarm is arranged at the top of the box body, is electrically connected with the capacitive sensor and the coil and is used for giving an alarm to remind when the set rated voltage is greater than or equal to the circuit voltage.
2. The apparatus according to claim 1, wherein the housing further comprises a power switch, a setting key, a display, a power supply and a detection switch for detecting and controlling the command of withstand voltage of the fuse.
3. The apparatus according to claim 1, wherein the power supply is a dc power supply, and a dc voltage is applied.
4. The apparatus according to claim 1, wherein the relay interface includes a relay normally open indicator light, one end of a switch socket of the relay interface is connected to a positive electrode of the power supply, and the other normally open socket is connected to a positive electrode of the relay normally open indicator light; the negative pole of the relay normally-open indicator light and the negative pole of the relay normally-closed indicator light are both connected with the negative pole of the power supply.
5. The apparatus according to claim 1, wherein the relay interface comprises a normally closed relay indicator, the coil socket of the normally closed relay indicator is connected to the negative terminal of the power supply at one end and to the negative terminal of the coil at the other end, the normally closed socket of the normally closed relay indicator is connected to the positive terminal of the normally closed relay indicator, and the negative terminals of the normally open relay indicator and the normally closed relay indicator are connected to the negative terminal of the power supply.
6. The apparatus according to claim 1, wherein the detection area includes a fuse a socket and a fuse B socket, and when a fuse to be detected is inserted into the fuse a socket and the fuse B socket, the fuse a indicator lamp and the fuse B indicator lamp are respectively turned on.
7. The apparatus of claim 1, wherein the fuse-a socket and the fuse-B socket detect the highest operating voltage of the fuse under normal operation, and the fuse can only be used in a circuit with a voltage less than or equal to the operating voltage, i.e. the selected operating voltage of the fuse is greater than the normal voltage in the circuit, and the fuse withstand voltage detection is realized.
8. The apparatus according to claim 1, wherein the capacitance sensor is a variable capacitor, and two of the two parameters are kept unchanged, and the change of the two parameters is converted into a change of a single capacitance by changing only the other parameter, and then the change of the capacitance is converted into an electrical signal by a matched measuring circuit and outputted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110946676.XA CN113721141A (en) | 2021-08-18 | 2021-08-18 | Voltage withstand detection device for fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110946676.XA CN113721141A (en) | 2021-08-18 | 2021-08-18 | Voltage withstand detection device for fuse |
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| CN113721141A true CN113721141A (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110946676.XA Pending CN113721141A (en) | 2021-08-18 | 2021-08-18 | Voltage withstand detection device for fuse |
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| JP2001343436A (en) * | 2000-05-31 | 2001-12-14 | Fuji Electric Co Ltd | Withstand voltage testing method of breaker |
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2021
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Application publication date: 20211130 |