Test device for rapid fuse of rectifier cabinet

Abstract

The utility model relates to the technical field of circuit detection and maintenance, and discloses a rectifier cabinet fast-acting fuse testing device, which comprises a detection rod, a first detection end, a second detection end and a fast-acting fuse detection circuit, the rapid fuse detection circuit comprises a first contact, a second contact, a fuse normal prompt circuit and a fuse damage prompt circuit which are electrically connected with the first detection end and the second detection end, when the first detection end and the second detection end are electrically connected, the fuse normal prompt circuit is switched on, and when the first detection end and the second detection end are disconnected, the fuse damage prompt circuit is switched off. And the fuse damage prompting circuit is conducted. According to the device, the simple triodes are used for forming a detection loop, the buzzer and the LED lamp are used for assisting a worker in judging a detection result, the device is convenient and rapid to use, the detection efficiency can be greatly improved, and the worker is helped to rapidly complete judgment on the fusing performance of the rectifier cabinet. The device is simple in overall structure, easy to manufacture, low in cost and suitable for large-scale popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit detection and maintenance, in particular to a quick fuse test device for a rectifier cabinet. Background Technique

[0002] Today, with the rapid development of electrolytic aluminum, an efficient, reliable and stable power supply system plays a crucial role in the production of electrolytic aluminum. In the entire power supply system, the rectification device is responsible for converting the alternating current generated by the power generation system into the direct current required by the electrolytic cell, and its stable operation is particularly important. As an important device for supplying power to the electrolytic cell, the rectifier on the rectifier cabinet is a key component for AC-DC conversion, which is realized by diodes, thyristors, or other power semiconductor devices. At present, a quick fuse is connected in series on each diode in the rectifier cabinet to prevent AC-DC short circuit caused by diode damage. Since the number of quick fuses in a single rectifier cabinet is large, during daily shutdown performance maintenance, staff use an ordinary multimeter to detect the quick fuses, which is slow, time-consuming, and inconvenient for detection. In view of this problem, it is urgent to develop a new quick test device for performance verification of quick fuses. Content of the Utility Model

[0003] To overcome the problems existing in the related art, the utility model provides a quick fuse test device for a rectifier cabinet, which uses a simple triode to form a detection circuit, and uses a buzzer and an LED lamp to assist the staff in judging the detection results. It is convenient and fast to use, can greatly improve the detection efficiency, and quickly complete the determination of the fusing performance of the rectifier cabinet.

[0004] The technical solution adopted by the utility model is as follows: a quick fuse test device for a rectifier cabinet, including a detection rod; a first detection end and a second detection end provided on the detection rod; and a quick fuse detection circuit; the quick fuse detection circuit includes a first contact and a second contact, the first detection end and the second detection end are respectively electrically connected to the first contact and the second contact, the quick fuse detection circuit includes a fuse normal prompt circuit and a fuse damage prompt circuit, when the first detection end and the second detection end are electrically connected, the fuse normal prompt circuit is turned on, and when the first detection end and the second detection end are disconnected, the fuse damage prompt circuit is turned on.

[0005] Further, the quick fuse detection circuit further includes a DC power supply, the fuse normal prompt circuit includes a first resistor and a first light-emitting diode, one end of the first resistor and the first light-emitting diode in series is connected to the positive pole of the DC power supply, and the other end is connected to the first contact, and the negative pole of the DC power supply is connected to the second contact.

[0006] Further, the fuse damage prompting circuit includes a three-terminal voltage regulator, a buzzer, a second resistor, a triode, a capacitor, a second light-emitting diode, and a diode. The positive input terminal of the three-terminal voltage regulator is connected to the positive pole of the DC power supply. The positive output terminal of the three-terminal voltage regulator is simultaneously connected to the first end of the buzzer and the first end of the second resistor. The negative pole of the three-terminal voltage regulator is connected to the second contact. The second end of the buzzer is connected to the collector of the triode. The capacitor is connected in parallel with the second light-emitting diode, one end of which is connected to the second end of the second resistor, and the other end is connected to the base of the triode. The emitter of the triode is connected to the second contact. The positive pole of the diode is connected to the second end of the second resistor, and the negative pole is connected to the first contact.

[0007] Further, the detection rod includes a handle and a rod body. The rod body includes a plurality of telescopic joints, which are hollow cones. The telescopic joints are nested and fixedly connected in sequence. The first detection end and the second detection end are arranged at the top of the rod body.

[0008] Further, there are two detection rods, namely a first detection rod and a second detection rod. The first detection end is arranged on the first detection rod, and the second detection end is arranged on the second detection rod. The fast fuse detection circuit is arranged on the first detection rod or the second detection rod.

[0009] Further, the detection rod includes a handle and a rod body that are both of hollow structure. A guide rail is arranged inside the rod body, and a chute is arranged on the outer surface of the handle. A first sliding rod is arranged inside the guide rail, and a slider is arranged inside the chute. The slider is fixedly connected to the first end of the first sliding rod. The first detection end and the second detection end are arranged at the second end of the first sliding rod and form a preset angle. The slider slides inside the chute to drive the first detection end and the second detection end to enter and exit the rod body.

[0010] Further, a second sliding rod and a third sliding rod are further arranged at the second end of the first sliding rod. At the end of the rod body away from the handle, there are a first opening and a second opening through which the second sliding rod and the third sliding rod can pass. The first opening and the second opening form the preset angle. The first detection end is arranged on the second sliding rod, and the second detection end is arranged on the third sliding rod.

[0011] Further, a bolt hole is arranged at the second end of the first sliding rod. The second sliding rod and the third sliding rod are rotationally connected to the first sliding rod through bolts.

[0012] Further, a spring is further arranged between the first end of the first sliding rod and the handle.

[0013] Further, the first detection end and the second detection end are metal balls.

[0014] The leakage detection execution device for the distribution room of the utility model has the following technical effects: a fuse damage prompt circuit is configured by using a triode, a light-emitting diode and a buzzer, and a fuse normal prompt circuit is configured by using a resistor and a light-emitting diode. Both circuits are connected to the first contact and the second contact, and the first contact and the second contact are electrically connected to the first detection end and the second detection end. The first detection end and the second detection end are abutted against the positive and negative electrodes of the fuse. When the fuse has good performance, the first detection end and the second detection end are conducted, and at this time, the fuse normal prompt circuit is conducted. When the fuse is damaged, the first detection end and the second detection end are disconnected, and at this time, the fuse damage prompt circuit is conducted. When the two circuits are conducted, they can emit different prompts to help the staff judge the state of the fuse. The above circuits are integrated on the detection rod, and the detection range of the staff can be expanded by means of the length of the detection rod, which is convenient for the staff to detect. In this way, the detection efficiency can be greatly improved, and it helps the staff to quickly complete the determination of the fusing performance of the rectifier cabinet. The overall structure of the device is simple, easy to manufacture, and low in cost, and it is suitable for large-scale promotion.

[0015] Other features and advantages of the utility model will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0016] The drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0017] Figure 1 is a schematic diagram of the internal fast fuse detection circuit connection of a rectifier cabinet fast fuse test device shown according to an exemplary embodiment.

[0018] Figure 2 is a schematic diagram of the structure of a detection rod shown according to an exemplary embodiment.

[0019] Figure 3 is a schematic diagram of the structure of an expansion joint shown according to an exemplary embodiment.

[0020] Figure 4 is a schematic diagram of the structure of another detection rod shown according to an exemplary embodiment.

[0021] Figure 5 is a schematic diagram of the internal structure of another detection rod shown according to an exemplary embodiment.

[0022] Reference numerals: 10, detection rod; 11, handle; 111, chute; 112, slider; 12, rod body; 121, telescopic section; 122, first opening; 123, second opening; 124, first slide bar; 125, second slide bar; 126, third slide bar; 127, bolt; 20, first detection end; 21, second detection end; 22, first contact; 23, second contact; 30, fast fuse detection circuit; 31, first resistor; 32, first light-emitting diode; 33, three-terminal voltage regulator; 34, buzzer; 35, second resistor; 36, triode; 37, capacitor; 38, second light-emitting diode; 39, diode; 40, switch; 50, power supply; 60, spring. Detailed implementation manners

[0023] The following will describe in detail the specific implementation manners disclosed by the present utility model with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for the purpose of illustration and explanation of the present disclosure, and are not used to limit the present disclosure.

[0024] As Figures 1 to 5 shown, it is an exemplary embodiment disclosed by the present utility model. The fast fuse test device for the rectifier cabinet of the present utility model includes a detection rod 10, a first detection end 20, a second detection end 21 provided on the detection rod 10, and a fast fuse detection circuit 30; the fast fuse detection circuit 30 includes a first contact 22 and a second contact 23, the first detection end 20 and the second detection end 21 are respectively electrically connected to the first contact 22 and the second contact 23, the fast fuse detection circuit 30 includes a fuse normal prompt circuit and a fuse damage prompt circuit, when the first detection end 20 and the second detection end 21 are electrically connected, the fuse normal prompt circuit is turned on, and when the first detection end 20 and the second detection end 21 are disconnected, the fuse damage prompt circuit is turned on.

[0025] The fast fuse test device for the rectifier cabinet of the present utility model is configured with a fast fuse detection circuit 30 on the detection rod 10. This circuit includes a fuse normal prompt circuit, a fuse damage prompt circuit, a first contact 22 and a second contact 23. A first detection end 20 and a second detection end 21 are provided at the top of the detection rod 10, and the first detection end 20 and the second detection end 21 are respectively electrically connected to the first contact 22 and the second contact 23. When the first detection end 20 and the second detection end 21 are electrically connected, the fuse normal prompt circuit will be turned on and a prompt will be issued. When the first detection end 20 and the second detection end 21 are disconnected, the fuse damage prompt circuit will be turned on and a prompt will be issued. The fuse normal prompt circuit and the fuse damage prompt circuit will issue different prompts when turned on, so as to facilitate quickly distinguishing the quality of the fuse. The fast fuse detection circuit 30 is arranged on the detection rod 10, and by virtue of the length of the rod body 12 of the detection rod 10, the detection distance can be extended, which is convenient for detection. In this way, the detection efficiency of the fuse is improved.

[0026] Exemplarily, as Figure 1 shown, in the exemplary embodiment disclosed by the present utility model, the fast fuse detection circuit 30 further includes a DC power supply 50. The fuse normal indication circuit includes a first resistor 31 and a first light-emitting diode 32. One end of the series connection of the first resistor 31 and the first light-emitting diode 32 is connected to the positive pole of the DC power supply 50, and the other end is connected to the first contact 22. The negative pole of the DC power supply 50 is connected to the second contact 23. The fuse damage indication circuit includes a three-terminal voltage regulator 33, a buzzer 34, a second resistor 35, a triode 36, a capacitor 37, a second light-emitting diode 38, and a diode 39. The positive input terminal of the three-terminal voltage regulator 33 is connected to the positive pole of the DC power supply 50. The positive output terminal of the three-terminal voltage regulator 33 is simultaneously connected to the first end of the buzzer 34 and the first end of the second resistor 35. The negative pole of the three-terminal voltage regulator 33 is connected to the second contact 23. The second end of the buzzer 34 is connected to the collector of the triode 36. The capacitor 37 is connected in parallel with the second light-emitting diode 38. One end of the capacitor 37 is connected to the second end of the second resistor 35, and the other end is connected to the base of the triode 36. The emitter of the triode 36 is connected to the second contact 23. The positive pole of the diode 39 is connected to the second end of the second resistor 35, and the negative pole is connected to the first contact 22.

[0027] Specifically, as Figure 1As shown in the figure, the positive pole of the power supply 50 is connected to the switch 40. One end of the normal fuse prompt circuit is connected to the switch 40, and the other end is connected to the first contact 22. The negative pole of the power supply 50 is connected to the second contact 23. The first contact 22 and the second contact 23 are electrically connected to the first detection end 20 and the second detection end 21 respectively. The first detection end 20 and the second detection end 21 are respectively abutted against the positive and negative poles of the fast fuse. When the fast fuse has good performance, the first detection end 20 and the second detection end 21 are conducted. At this time, the fuse normal prompt circuit is conducted, and the first light-emitting diode 32 set in the fuse normal prompt circuit lights up. Preferably, the first light-emitting diode 32 can emit green light to represent that the fast fuse has good performance. In the fuse damage prompt circuit, the second resistor 35 and the diode 39 are conducted. The current passes through the diode 39, the first contact 22, the second contact 23 and then enters the negative pole of the power supply 50. The forward voltage of the diode 39 is not enough for the second light-emitting diode 38 and the triode 36 to work. At this time, the triode 36 is cut off, and the buzzer 34 does not sound. The fuse damage prompt circuit is in the monitoring standby state. When it is detected that the fast fuse is damaged, the first detection end 20 and the second detection end 21 are disconnected. At this time, the fuse normal prompt circuit is disconnected. In the fuse damage prompt circuit, the diode 39 is cut off, the forward voltage of the diode 39 becomes larger, the triode 36 is conducted, and the current passes through the second resistor 35 and then flows to the second light-emitting diode 38 and the base of the triode 36, and finally enters the negative pole of the power supply 50. The second light-emitting diode 38 lights up, and at the same time the buzzer 34 also emits an alarm sound. Preferably, the second light-emitting diode 38 can emit red light to indicate that the fast fuse is damaged. The capacitor can smooth the voltage fluctuation caused by the on-off of the second light-emitting diode 38 and prevent the buzzer 34 from making a "click" abnormal sound.

[0028] Exemplarily, as Figure 2 、 Figure 3 shown, Figure 2 is a schematic structural diagram of a detection rod 10 shown according to an exemplary embodiment. Figure 3 is a schematic structural diagram of a telescopic joint 121 shown according to an exemplary embodiment. The detection rod 10 includes a handle 11 and a rod body 12. The rod body 12 includes a plurality of telescopic joints 121. The telescopic joints 121 are hollow cones, and the telescopic joints 121 are nested and fastened to each other in sequence. The first detection end 20 and the second detection end 21 are arranged at the top of the rod body 12.

[0029] Specifically, there are two detection rods 10, namely the first detection rod 10 and the second detection rod 10. The first detection end 20 is arranged on the first detection rod 10, and the second detection end 21 is arranged on the second detection rod 10. The fast fuse detection circuit 30 is arranged on the first detection rod 10 or the second detection rod 10.

[0030] The detection rod 10 of the quick fuse test device of the utility model rectifier cabinet includes a handle 11 and a rod body 12. The rod body 12 includes a number of telescopic joints 121 in the shape of a hollow cone. One end of the telescopic joint 121 close to the handle 11 is the first end, and the end far from the handle 11 is the second end. The diameter of the first end of the telescopic joint 121 is larger than that of the second end. A number of telescopic joints 121 are nested with each other. For the telescopic joint 121 located inside, the diameter of its first end is smaller than that of the first end of the telescopic joint 121 outside it, and the diameter of its second end is smaller than that of the second end outside it. When the rod body 12 shrinks, the telescopic joints 121 are nested with each other to reduce the length of the rod body 12. When the rod body 12 needs to be extended, the first end of the telescopic joint 121 located inside is fixedly connected to the second end of the telescopic joint 121 located outside. In this way, the first ends of a number of nested telescopic joints 121 are sequentially fixedly connected to the second ends of the externally nested telescopic joints 121 to extend the length of the rod body 12. The first detection end 20 and the second detection end 21 are provided at the top of the rod body 12. In this way, when the staff is performing a quick fuse test, they can adjust the length of the rod body 12 to facilitate the measurement of the quick fuses at various positions in the rectifier cabinet without frequently changing the measurement position. Exemplarily, there are two detection rods 10, the first detection end 20 and the second detection end 21 are respectively provided at the tops of the two detection rods 10, and the quick fuse detection circuit 30 is provided on one of the detection rods 10. The first contact 22 is electrically connected to the first detection end 20, and the second contact 23 is electrically connected to the second detection end 21, such as being connected by wires respectively.

[0031] Exemplarily, such as Figure 4 , Figure 5 shown, Figure 4 is a schematic structural diagram of another detection rod 10 shown according to an exemplary embodiment. Figure 5 is a schematic internal structure diagram of another detection rod 10 shown according to an exemplary embodiment. In this exemplary embodiment, the detection rod 10 includes a handle 11 and a rod body 12 both of which are hollow structures. A guide rail is provided inside the rod body 12, a chute 111 is provided on the outer surface of the handle 11, a first sliding rod 124 is provided inside the guide rail, a slider 112 is provided inside the chute 111, the slider 112 is fixedly connected to the first end of the first sliding rod 124, the first detection end 20 and the second detection end 21 are provided at the second end of the first sliding rod 124 and form a preset angle, and the slider 112 slides inside the chute 111 to drive the first detection end 20 and the second detection end 21 to enter and exit the rod body 12.

[0032] Specifically, a second slide bar 125 and a third slide bar 126 are further arranged at the second end of the first slide bar 124. At one end of the rod body 12 away from the handle 11, a first opening 122 and a second opening 123 are arranged for the second slide bar 125 and the third slide bar 126 to pass through. The first opening 122 and the second opening 123 form a preset included angle. The first detection end 20 is arranged on the second slide bar 125, and the second detection end 21 is arranged on the third slide bar 126.

[0033] In the disclosed exemplary embodiment, there is only one detection rod 10. The first detection end 20 and the second detection end 21 are both arranged at the top of the rod body 12 of the detection rod 10. At the top of the rod body 12, a first opening 122 and a second opening 123 forming a certain angle are provided. A guide rail is arranged inside the rod body 12, and a first slide bar 124 is arranged on the guide rail. At the second end of the first slide bar 124, a second slide bar 125 and a third slide bar 126 are further arranged. The first detection end 20 is arranged at one end of the second slide bar 125 away from the first slide bar 124, and the second detection end 21 is arranged at one end of the third slide bar 126 away from the first slide bar 124. The first detection end 20 and the second detection end 21 enter and exit the rod body 12 from the first opening 122 and the second opening 123 respectively. The included angle formed between the first opening 122 and the second opening 123 defines the movement trajectories of the first detection end 20 and the second detection end 21. When the slider 112 slides in the chute 111, driving the first slide bar 124 to move, and pushing the second slide bar 125 and the third slide bar 126 out of the rod body 12, the longer the second slide bar 125 and the third slide bar 126 extend out of the rod body 12, the farther the first detection end 20 and the second detection end 21 are from each other. In this way, on the one hand, the second slide bar 125 and the third slide bar 126 can effectively extend the length of the rod body 12 to facilitate measuring the quick fuses at various positions in the rectifier cabinet without frequently changing the measurement position. On the other hand, the distance between the first detection end 20 and the second detection end 21 can be adjusted to adapt to the different positive and negative pole spacings of various types of quick fuses.

[0034] Exemplarily, bolt holes are arranged at the second end of the first slide bar 124. The second slide bar 125 and the third slide bar 126 are rotatably connected to the first slide bar 124 through bolts 127. A spring 60 is further arranged between the first end of the first slide bar 124 and the handle 11. The first detection end 20 and the second detection end 21 are metal balls.

[0035] The slider 112 slides within the chute 111, driving the first slide bar 124 to move. The first slide bar 124 pushes the second slide bar 125 and the third slide bar 126 in and out of the rod body 12. A bolt hole is provided at the second end of the first slide bar 124. The second slide bar 125 and the third slide bar 126 are rotatably connected to the first slide bar 124 by bolts 127. A spring 60 is further provided between the first end of the first slide bar 124 and the handle 11. When the slider 112 is released, driven by the elastic force of the spring 60, the first slide bar 124 moves towards the handle 11, driving the second slide bar 125 and the third slide bar 126 to contract back into the rod body 12. The first detection end 20 and the second detection end 21 are metal balls, which can ensure that there is sufficient contact area when the first detection end 20 and the second detection end 21 are in contact with the fast fuse at different angles.

[0036] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0037] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0038] Furthermore, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A rapid fuse test device for a rectifier cabinet, characterized in that Comprising A detection rod; A first detection end and a second detection end provided on the detection rod; And A fast fuse detection circuit; The fast fuse detection circuit includes a first contact and a second contact. The first detection end and the second detection end are electrically connected to the first contact and the second contact respectively. The fast fuse detection circuit includes a fuse normal indication circuit and a fuse damage indication circuit. When the first detection end and the second detection end are electrically connected, the fuse normal indication circuit is turned on. When the first detection end and the second detection end are disconnected, the fuse damage indication circuit is turned on.

2. The rectifier cabinet fast fuse test device according to claim 1, characterized in that The fast fuse detection circuit further includes a DC power supply. The fuse normal indication circuit includes a first resistor and a first light-emitting diode. One end of the first resistor and the first light-emitting diode in series is connected to the positive pole of the DC power supply, and the other end is connected to the first contact. The negative pole of the DC power supply is connected to the second contact.

3. The rectifier cabinet fast fuse test device according to claim 2, characterized in that The fuse damage indication circuit includes a three-terminal voltage regulator, a buzzer, a second resistor, a triode, a capacitor, a second light-emitting diode and a diode. The positive input terminal of the three-terminal voltage regulator is connected to the positive pole of the DC power supply. The positive output terminal of the three-terminal voltage regulator is simultaneously connected to the first end of the buzzer and the first end of the second resistor. The negative pole of the three-terminal voltage regulator is connected to the second contact. The second end of the buzzer is connected to the collector of the triode. The capacitor is connected in parallel with the second light-emitting diode. One end is connected to the second end of the second resistor, and the other end is connected to the base of the triode. The emitter of the triode is connected to the second contact. The positive pole of the diode is connected to the second end of the second resistor, and the negative pole is connected to the first contact.

4. The rectifier cabinet fast fuse test device according to claim 1, wherein, The detection rod includes a handle and a rod body. The rod body includes a plurality of telescopic joints. The telescopic joints are hollow cones. The telescopic joints are nested and tightly connected in sequence. The first detection end and the second detection end are arranged at the top of the rod body.

5. The rectifier cabinet fast fuse test device according to claim 4, characterized in that, There are two detection rods, namely a first detection rod and a second detection rod. The first detection end is arranged on the first detection rod, and the second detection end is arranged on the second detection rod. The fast fuse detection circuit is arranged on the first detection rod or the second detection rod.

6. The rectifier cabinet fast fuse test device according to claim 1, characterized in that, The detection rod includes a handle and a rod body both of which are hollow structures. A guide rail is arranged inside the rod body. A chute is arranged on the outer surface of the handle. A first sliding rod is arranged inside the guide rail. A slider is arranged inside the chute. The slider is fixedly connected to the first end of the first sliding rod. The first detection end and the second detection end are arranged at the second end of the first sliding rod and form a preset angle. The slider slides in the chute to drive the first detection end and the second detection end to enter and exit the rod body.

7. The rectifier cabinet fast fuse test device according to claim 6, characterized in that, A second sliding rod and a third sliding rod are further arranged at the second end of the first sliding rod. The end of the rod body away from the handle is provided with a first opening and a second opening through which the second sliding rod and the third sliding rod can pass. The first opening and the second opening form the preset angle. The first detection end is arranged on the second sliding rod, and the second detection end is arranged on the third sliding rod.

8. The rectifier cabinet fast fuse test device according to claim 7, characterized in that, A bolt hole is provided on the second end of the first sliding rod, and the second sliding rod and the third sliding rod are rotatably connected to the first sliding rod by bolts.

9. The rectifier cabinet fast fuse test device according to claim 6, characterized in that, A spring is further provided between the first end of the first sliding rod and the handle.

10. The rectifier cabinet fast fuse test device according to claim 1, characterized in that, The first detection end and the second detection end are metal balls.

Images