CN210270129U - Short circuit detection device for live-line connection and disconnection examination - Google Patents
Short circuit detection device for live-line connection and disconnection examination Download PDFInfo
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- CN210270129U CN210270129U CN201921132341.9U CN201921132341U CN210270129U CN 210270129 U CN210270129 U CN 210270129U CN 201921132341 U CN201921132341 U CN 201921132341U CN 210270129 U CN210270129 U CN 210270129U
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Abstract
The utility model discloses a short circuit detection device for live-line electric spark-off examination, which comprises a short circuit detection device, a short circuit detection device power line, a short circuit detection device connector lug, a lead, a street code and a load side lead; the short circuit detection device is used for loading a human body safety voltage on each phase of the lead, detecting the current value of each phase of the lead in real time and alarming when the current value is abnormal; the short circuit detection device power line is used for providing power for the short circuit detection device; the short circuit detection device connector lug is arranged on the short circuit detection device and is connected with a lead through a firm wire clamp; the street code is used for supporting the conducting wire; the conducting wire is used for carrying out real operation on the examinee so that the examinee can connect the load side conducting wire to the conducting wire. The utility model can monitor the whole examination process of the examinee in real time, and immediately give an alarm once electric shock or short circuit occurs; the device has long service life, and can still keep reliable function after multiple alarms; the human body safety voltage is adopted, so that the safety of examinees and equipment can be guaranteed.
Description
Technical Field
The embodiment of the utility model provides a short circuit detection technical field especially relates to a short circuit detection device of electrified examination of tearing open a fire.
Background
In the power grid related skill examination, one item is the operation of live line connection and disconnection of a line, the operation needs to examine the mastering degree of live line connection and disconnection practical operation skills of an examinee, wherein one examination item is that the examinee needs to prevent electric shock and burn in the operation process, the live equipment (line) cannot be touched by mistake to cause electric shock, all loads at the rear section of a construction section are cut off before the operation, electric arcs are prevented from being generated due to alternate disconnection, insulation shielding measures are made, connection is carried out phase by phase, and the alternate short circuit caused by the fact that a human body or a tool is not allowed to contact with adjacent wires at the same time is not allowed. In short, the operation process needs to prevent electric shock and interphase short circuit.
In the traditional evaluation process, an evaluator can only judge whether an electric shock occurs or a short circuit is caused during operation of an examinee through video recording, visual observation or experience due to objective reasons, but the evaluator has a certain distance from the examinee, if the body position occurs in the operation process, a line tower and the like are shielded, the evaluator is difficult to observe the examinee in an all-round, timely and fine manner, and the examinee has the behaviors of causing the electric shock and the short circuit, and the system often has the characteristics of unpredictability and instantaneity, so that the evaluator is difficult to objectively evaluate whether the electric shock occurs or the short circuit is caused during operation of the examinee.
Some examination rooms adopt an evaluation mode closer to field operation, the condition that working voltage is loaded on a lead in actual operation is simulated, a breaker is arranged on a power supply side for protection, and an evaluator judges whether electric shock or short circuit caused by error touch occurs during operation of an examinee through whether the breaker has tripping action or not and then scores. However, the conductor of the operation object has working voltage, so that the examinee still has certain personal safety risk in real operation. The personnel who participate in the real operation are examinees after all, and the skill is more lifelike and sparser, and in the actual examination and appraisal, electric shock or short circuit often take place, and the circuit breaker consequently trips often, and the life-span shortens greatly, and the cost is also higher.
Therefore, a device is needed to be designed, whether the examinee gets an electric shock or causes a short circuit in the operation process can be judged timely and objectively, and meanwhile, the safety of the examinee and equipment can be guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a live-line connection tears short circuit detection device of examination of tearing open fire to solve the not enough of prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
a short circuit detection device for live-line connection and disconnection test comprises a short circuit detection device, a short circuit detection device power line, a short circuit detection device connector lug, a lead, a street code and a load side lead;
the short circuit detection device is used for loading a human body safety voltage on each phase of the lead, detecting the current value of each phase of the lead in real time and giving an alarm when the current value is abnormal;
the power line of the short-circuit detection device is connected with the short-circuit detection device and used for providing power for the short-circuit detection device;
the short circuit detection device connector lug is arranged on the short circuit detection device and is connected with the lead through a firm wire clamp;
the street code is used for supporting the lead;
the wire is used for carrying out real operation on the examinee so as to enable the examinee to connect the load side wire to the wire.
Furthermore, in the short-circuit detection device for the live-line connection and disconnection test, the short-circuit detection device comprises a power supply module, a monitoring module, an alarm module, a sensitive ammeter signal wire, a voltage source module and a voltage source module power line;
the power supply module is connected with the power line of the short-circuit detection device and is used for converting the voltage input by the power line of the short-circuit detection device into low-voltage direct current so as to provide power for the monitoring module and the voltage source module;
the monitoring module is connected with the sensitive ammeter through the sensitive ammeter signal wire and is used for detecting current value signals of each phase and a zero line of the lead, transmitted by the sensitive ammeter through the sensitive ammeter signal wire, of the sensitive ammeter in real time and sending an alarm electric signal to the alarm module when electric shock or short circuit caused on the lead is detected so as to enable the alarm module to start alarming;
each phase of the lead is connected with one sensitive ammeter in series, and the sensitive ammeter is used for detecting the current output from the voltage source module to each phase of the lead and a zero line in real time;
the voltage source module is used for obtaining electric power from a power line of the voltage source module and loading a human body safety voltage on the corresponding lead phase line.
Furthermore, in the short-circuit detection device for the live-line connection and disconnection test, the alarm module consists of a buzzer and a bulb;
when the alarm electric signal transmitted by the monitoring module is received, the buzzer buzzes, and the lamp twinkles to give an alarm.
Furthermore, in the short circuit detection device for the live-line connection and disconnection test, the power module is a switching power module.
Furthermore, in the short circuit detection device for the live-line connection and disconnection test, the monitoring module is a group of detection circuit modules taking a single chip as a core.
Further, in the short circuit detection device for the live connection and disconnection test, the sensitive ammeter is an electronic sensitive ammeter module.
Furthermore, in the short-circuit detection device for the live-line connection and disconnection test, a power supply connected to the short-circuit detection power line is a mains supply or a battery pack.
Compared with the prior art, the utility model discloses following beneficial effect has:
1) the whole examination process of an examinee can be monitored in real time, and an alarm is given immediately once electric shock or short circuit occurs;
2) the device has long service life, and can still keep reliable function after multiple alarms;
3) the human body safety voltage is adopted, so that the safety of examinees and equipment can be guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a short circuit detection device for an electrified fire receiving and removing test provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a short circuit detection device provided in the embodiment of the present invention.
Reference numerals:
short circuit detection means 1, wires 2;
the short circuit detection device comprises a short circuit detection device power line 11, a short circuit detection device connector lug 12, a power module 13, a monitoring module 14, an alarm module 15, a sensitive ammeter 16 and a voltage source module 17;
sensitive ammeter signal line 161;
voltage source module power lines 171.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that 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. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have the specific orientation, operate in the specific orientation configuration, and thus, should not be construed as limiting the present invention.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Example one
Referring to fig. 1-2, an embodiment of the present invention provides a short circuit detection device for an electrified dismantling fire test, including a short circuit detection device 1, a short circuit detection device power line 11, a short circuit detection device connector 12, a wire 2, a street code 21 and a load side wire 22;
the short circuit detection device 1 is a circuit module, and is used for loading a human body safety voltage on each phase of the lead 2, detecting the current value of each phase of the lead 2 in real time, and alarming when the current value is abnormal;
the power line 11 of the short-circuit detection device is connected with the short-circuit detection device 1, and is used for providing power for the short-circuit detection device 1, and generally connected to 220V mains supply or powered by a battery;
the short circuit detection device connector lug 12 is arranged on the short circuit detection device 1 and is connected with the lead 2 through a firm wire clamp;
the street code 21 is used for supporting the lead 2;
the lead 2 is used for the examinee to perform an actual operation for the examinee to dock the load side lead 22 to the lead 2.
It should be noted that the number of the wires 2 includes, but is not limited to, one zero line and three phase lines drawn in the drawings.
The short circuit detection device 1 comprises a power supply module 13, a monitoring module 14, an alarm module 15, a sensitive ammeter 16, a sensitive ammeter signal line 161, a voltage source module 17 and a voltage source module power line 171;
the power module 13 is a switching power module, connected to the short-circuit detection device power line 11, and configured to convert a voltage input by the short-circuit detection device power line 11 into a low-voltage direct current to provide power to the monitoring module 14 and the voltage source module 17;
the monitoring module 14 is a group of detection circuit modules with a single chip microcomputer chip as a core, is connected with the sensitive ammeter 16 through the sensitive ammeter signal line 161, and is used for detecting current value signals of each phase and a zero line of the lead 2 transmitted by the sensitive ammeter 16 through the sensitive ammeter signal line 161 in real time, and sending an alarm electric signal to the alarm module 15 when detecting that an electric shock occurs or a short circuit is caused on the lead 2 (indicated by the current value signals), so that the alarm module 15 starts to alarm; similarly, when detecting that no abnormal current occurs on the lead 2, the normal electric signal is sent to the alarm module 15, and the alarm module 15 does not give an alarm.
Each phase of the lead 2 is connected with one sensitive ammeter 16 in series, and the sensitive ammeter 16 is an electronic sensitive ammeter module and is used for detecting the current output from the voltage source module 17 to each phase and the zero line of the lead 2 in real time and sending the current value signals of each phase and the zero line of the lead 2 to the monitoring module 14 through a sensitive ammeter signal wire 161 in real time;
the voltage source module 17 is configured to obtain power from the voltage source module power line 171, and load a constant human body safety voltage on the corresponding 2-phase conductor line, where the electromotive force direction is as shown in the figure.
Preferably, the alarm module 15 is composed of a buzzer and a bulb;
when the alarm electric signal transmitted by the monitoring module 14 is received, the buzzer sounds, and the lamp flashes light to alarm; similarly, when a normal electrical signal is received from the monitoring module 14, the buzzer does not sound and the light of the bulb is normally on.
The utility model provides an electrified short circuit detection device who connects examination of tearing open a fire that connects's operation principle as follows:
when the device works, starting from a zero line, the voltage source module 17 loads a constant human body safety voltage on each phase of the lead 2, the direction of the electromotive force is as shown in the figure, and the adjacent phase voltages are sequentially increased (it can be understood that the working mode can also be an alternating current working mode that the voltage is gradually reduced, the phase voltage values are disordered, and the instantaneous values of the phase voltages are different);
before the examination practice, the phases and the phases are well insulated, the wires 2 have no current correspondingly, the current value of the sensitive ammeter 16 is zero, when the monitoring module 14 detects that the signal of the sensitive ammeter 16 is abnormal, the monitoring module sends a normal electric signal to the alarm module 15, the alarm module 15 does not give out buzzing sound and the light is normally on,
when an examinee starts to conduct live-line electric fire removal, if the operation method is correct, all insulation measures can be made as required, the conducting wire 2 has no current correspondingly, the current value of the sensitive ammeter 16 is zero at the moment, the monitoring module 14 sends a normal electric signal to the alarm module 15 when detecting that the signal of the sensitive ammeter 16 is abnormal, the alarm module 15 does not give out buzzing sound and the light is normally on,
if the examinee takes the electric shock or leads to the short circuit in the live working and tears the course open a fire in the live working, each looks can discharge to the ground or discharge between the lines, there is electric current on phase line or the zero line, sensitive ammeter 16 can detect current value on the wire 2 appears abnormal fluctuation, send the current value abnormal signal in real time to monitoring module 14, monitoring module 14 receives the back, to alarm module 15 sends the alarm signal of telecommunication, alarm module 15 sends out to buzz and twinkle light and reports to the police.
For example: if examinee's metal tool has touched simulation A looks and simulation B looks simultaneously carelessly, because voltage source module 17's effect, A, B alternate certain voltage, and the current will be followed A looks to B looks, A, B is two-phase sensitive ammeter 16 will measure a size and equals, the opposite direction's current value, and current signal transmits to behind monitoring module 14, monitoring module 14 judges the wire 2 takes place the short circuit, to alarm module 15 sends alarm signal, alarm module 15 sends out buzzing sound and twinkling light and reports to the police.
The embodiment of the utility model provides a short circuit detection device for live-line electric spark-off examination, which can monitor the whole examination process of an examinee in real time and immediately give an alarm once an electric shock occurs or a short circuit is caused; the device has long service life, and can still keep reliable function after multiple alarms; the human body safety voltage is adopted, so that the safety of examinees and equipment can be guaranteed.
The foregoing description of the embodiments has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same elements or features may also vary in many respects. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.
Example embodiments are provided so that this disclosure will be thorough and will fully convey the scope to those skilled in the art. Numerous details are set forth, such as examples of specific parts, devices, and methods, in order to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the disclosure. In certain example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.
The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises" and "comprising" are intended to be inclusive and therefore specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order discussed and illustrated, unless explicitly indicated as an order of performance. It should also be understood that additional or alternative steps may be employed.
When an element or layer is referred to as being "on" … … "," engaged with "… …", "connected to" or "coupled to" another element or layer, it can be directly on, engaged with, connected to or coupled to the other element or layer, or intervening elements or layers may also be present. In contrast, when an element or layer is referred to as being "directly on … …," "directly engaged with … …," "directly connected to" or "directly coupled to" another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship of elements should be interpreted in a similar manner (e.g., "between … …" and "directly between … …", "adjacent" and "directly adjacent", etc.). As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region or section from another element, component, region or section. Unless clearly indicated by the context, use of terms such as the terms "first," "second," and other numerical values herein does not imply a sequence or order. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
Spatially relative terms, such as "inner," "outer," "below," "… …," "lower," "above," "upper," and the like, may be used herein for ease of description to describe a relationship between one element or feature and one or more other elements or features as illustrated in the figures. Spatially relative terms may be intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below … …" can encompass both an orientation of facing upward and downward. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted.
Claims (7)
1. A short circuit detection device for a live-line connection and disconnection test is characterized by comprising a short circuit detection device, a short circuit detection device power line, a short circuit detection device connector lug, a lead, a street code and a load side lead;
the short circuit detection device is used for loading a human body safety voltage on each phase of the lead, detecting the current value of each phase of the lead in real time and giving an alarm when the current value is abnormal;
the power line of the short-circuit detection device is connected with the short-circuit detection device and used for providing power for the short-circuit detection device;
the short circuit detection device connector lug is arranged on the short circuit detection device and is connected with the lead through a firm wire clamp;
the street code is used for supporting the lead;
the wire is used for carrying out real operation on the examinee so as to enable the examinee to connect the load side wire to the wire.
2. The short circuit detection device for the examination of electrified fire removal according to claim 1, wherein the short circuit detection device comprises a power supply module, a monitoring module, an alarm module, a sensitive ammeter signal line, a voltage source module and a voltage source module power line;
the power supply module is connected with the power line of the short-circuit detection device and is used for converting the voltage input by the power line of the short-circuit detection device into low-voltage direct current so as to provide power for the monitoring module and the voltage source module;
the monitoring module is connected with the sensitive ammeter through the sensitive ammeter signal wire and is used for detecting current value signals of each phase and a zero line of the lead, transmitted by the sensitive ammeter through the sensitive ammeter signal wire, of the sensitive ammeter in real time and sending an alarm electric signal to the alarm module when electric shock or short circuit caused on the lead is detected so as to enable the alarm module to start alarming;
each phase of the lead is connected with one sensitive ammeter in series, and the sensitive ammeter is used for detecting the current output from the voltage source module to each phase of the lead and a zero line in real time;
the voltage source module is used for obtaining electric power from a power line of the voltage source module and loading a human body safety voltage on the corresponding lead phase line.
3. The short circuit detection device for the examination of electrified fire-picking according to claim 2, wherein the alarm module is composed of a buzzer and a bulb;
when the alarm electric signal transmitted by the monitoring module is received, the buzzer buzzes, and the lamp twinkles to give an alarm.
4. The short circuit detection device for the examination with electrification of connecting and disconnecting fire according to claim 2, wherein the power module is a switching power module.
5. The short circuit detection device for the examination with electrification of fire removal according to claim 2, wherein the monitoring module is a group of detection circuit modules taking a single chip as a core.
6. The short circuit detection device for live-on fire-off examination of claim 2, wherein the sensitive current meter is an electronic sensitive current meter module.
7. The short circuit detection device for the examination of taking charge of taking off and taking off fire according to claim 1, wherein the power supply connected to the short circuit detection power line is commercial power or a battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921132341.9U CN210270129U (en) | 2019-07-18 | 2019-07-18 | Short circuit detection device for live-line connection and disconnection examination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921132341.9U CN210270129U (en) | 2019-07-18 | 2019-07-18 | Short circuit detection device for live-line connection and disconnection examination |
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| Publication Number | Publication Date |
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| CN210270129U true CN210270129U (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921132341.9U Active CN210270129U (en) | 2019-07-18 | 2019-07-18 | Short circuit detection device for live-line connection and disconnection examination |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113870541A (en) * | 2021-09-22 | 2021-12-31 | 广东电网有限责任公司 | Low-voltage system operation experimental method and device |
| CN115548976A (en) * | 2022-12-02 | 2022-12-30 | 广东电网有限责任公司梅州供电局 | Power supply system and reliability monitoring method and device thereof |
-
2019
- 2019-07-18 CN CN201921132341.9U patent/CN210270129U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113870541A (en) * | 2021-09-22 | 2021-12-31 | 广东电网有限责任公司 | Low-voltage system operation experimental method and device |
| CN115548976A (en) * | 2022-12-02 | 2022-12-30 | 广东电网有限责任公司梅州供电局 | Power supply system and reliability monitoring method and device thereof |
| CN115548976B (en) * | 2022-12-02 | 2023-04-07 | 广东电网有限责任公司梅州供电局 | Power supply system and reliability monitoring method and device thereof |
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