CN211086555U - Electric leakage detection device of electric equipment - Google Patents

Abstract

An electric leakage detection device of electric equipment belongs to the technical field of electric leakage detection. The method is characterized in that: the discharge box comprises a plurality of independent discharge cavities (4) in a discharge box (1), wherein a group of discharge needles (2) which are oppositely arranged are arranged in the discharge cavities (4), the two groups of discharge needles (2) are respectively connected with electric equipment and grounded, and a discharge gap is formed between the two discharge needles (2) at intervals; the discharge device is also provided with a trigger box (5), a trigger circuit is arranged in the trigger box (5), a signal generated by the discharge of the discharge needle (2) at the discharge gap is connected into the trigger box (5), and the signal passes through the trigger circuit in the trigger box (5) and gives an alarm through the trigger circuit. In the electric leakage detection device of the electric equipment, the characteristic of a signal generated during point discharge is utilized to connect the signal into the trigger circuit, and the signal generated by the point discharge is detected and alarmed through the trigger circuit, so that the electric leakage detection of the electric equipment is realized.

Description

Electric leakage detection device of electric equipment

Technical Field

An electric leakage detection device of electric equipment belongs to the technical field of electric leakage detection.

Background

The electric equipment is because of reasons such as poor ground connection or other trouble in the use, the equipment probably has the electric leakage condition, a large amount of electric charges can gather on the equipment shell after the equipment takes place the electric leakage, especially sharp-pointed department and the corner on shell surface, because the equipment takes place the electric leakage after, its position of discharging is difficult to be perceived, consequently receive the electric shock when the human body is close to equipment easily, and when having combustible gas around the electric equipment, combustible gas burns easily under the effect of electric charge and even takes place the explosion, there is great potential safety hazard, consequently, design one kind and can detect the electric leakage condition of electric equipment, so that the scheme that in time eliminates the potential safety hazard becomes the problem that waits to solve in this field.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, and the electric leakage detection device of the electric equipment is provided, wherein the characteristic that a signal is generated when the point discharge is utilized, the signal is accessed into the trigger circuit, the signal generated by the point discharge is detected and alarmed through the trigger circuit, and the electric leakage detection of the electric equipment is realized.

The utility model provides a technical scheme that its technical problem adopted is: this electric leakage detection device of consumer, its characterized in that: the discharge box is internally provided with a plurality of independent discharge cavities, a group of discharge needles which are oppositely arranged are arranged in the discharge cavities, one discharge needle is connected with electric equipment after being led out from the discharge cavity, the other discharge needle is grounded after being led out from the discharge cavity, a discharge gap is formed between the two discharge needles at intervals, the discharge needles discharge at the discharge gap to generate discharge signals, and the discharge signals are led out from the discharge cavity to alarm.

Preferably, a trigger box is arranged on one side of the discharge box, the trigger box and the discharge box are integrally arranged, a trigger circuit is arranged in the trigger box, and the discharge signal is connected into the trigger circuit in the trigger box and gives an alarm through the trigger circuit.

Preferably, the discharge box be the metal material, mutual insulation between discharge box and the discharge needle, the discharge box passes through the magnet laminating on the consumer surface.

Preferably, in the discharge chamber, the distances of discharge gaps formed by the discharge needles are different; the trigger box is provided with a plurality of and with discharge chamber one-to-one.

Preferably, the trigger circuit in the trigger box is a light trigger circuit, and the light trigger circuit comprises a photosensitive element and an alarm device triggered by the photosensitive element; the optical signal generated by the discharge of the discharge needle at the discharge gap is transmitted and accessed into the photo-trigger circuit through the optical fiber;

the discharge cavity of the discharge box is filled with neon gas, so that the discharge cavity forms a neon bulb.

Preferably, the discharge box is made of transparent materials, an opaque outer shell is further sleeved outside the discharge box, and the end of the optical fiber penetrates through the outer shell and then is located between the discharge box and the outer shell.

Preferably, the trigger circuit in the trigger box is an electromagnetic trigger circuit, and an induction signal generated by the discharge of the discharge needle at the discharge gap is connected into the electromagnetic trigger circuit through an electromagnetic induction element;

the electromagnetic induction element is an induction coil or a Hall sensor, and the Hall sensor is placed in the discharge cavity; the induction coil is fixed in the discharge cavity or wound outside the discharge box.

Preferably, the trigger circuit in the trigger box is a temperature trigger circuit, and a temperature signal generated by discharging of the discharge needle at the discharge gap is connected into the electromagnetic trigger circuit through a temperature sensor;

the trigger circuit in the trigger box is a sound trigger circuit, and a temperature signal generated by discharging of the discharge needle at the discharge gap is connected into the electromagnetic trigger circuit through a sound sensor.

Preferably, the discharge cavity is made of transparent materials, a reflector is arranged in the discharge cavity, and the reflector reflects light signals generated by discharge of the discharge needle at the discharge gap to the outside of the discharge cavity.

Preferably, an optical fiber is placed in the discharge cavity, an optical signal generated by the discharge of the discharge needle at the discharge gap is transmitted to the outside of the discharge cavity through the optical fiber, and a convex lens for amplifying a light spot is arranged at a light output end of the optical fiber.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

1. in the electric leakage detection device of the electric equipment, the characteristic of a signal generated during point discharge is utilized to connect the signal into the trigger circuit, and the signal generated by the point discharge is detected and alarmed through the trigger circuit, so that the electric leakage detection of the electric equipment is realized.

2. The discharge box can be directly fixed on the surface of the electric equipment, and the structural complexity is simplified.

3. The discharging box is made of lightproof materials, and transmission and detection of optical signals are facilitated.

4. The photosensitive device can be realized by a photosensitive diode, a photosensitive triode, a photosensitive resistor and the like, and has a wider application range.

5. In power transmission and transformation system, can produce the signal of telecommunication between zero line and earth connection when zero line and earth connection short circuit, the technical scheme of this application can connect between power transmission and transformation system's zero line and earth connection equally, detects the short circuit between zero line and the earth connection.

Drawings

Fig. 1 is a schematic structural diagram of an electrical leakage detection apparatus in an embodiment 1 of an electrical device.

Fig. 2 is a schematic structural diagram of an electrical leakage detection apparatus in embodiment 2 of an electrical device.

Fig. 3 is a schematic structural diagram of an electrical leakage detection apparatus in embodiment 3 of an electrical device.

Fig. 4 is a schematic structural diagram of an electrical leakage detection apparatus in embodiment 4 of an electrical device.

Fig. 5 is a schematic structural diagram of an electrical leakage detection apparatus in embodiment 5 of an electrical device.

Fig. 6 is a schematic structural diagram of an electrical leakage detection apparatus in embodiment 6 of an electrical device.

Fig. 7 is a schematic structural diagram of an electrical leakage detection apparatus in an embodiment 8 of an electrical device.

Fig. 8 is a schematic structural diagram of an electrical leakage detection apparatus in an embodiment 11 of an electrical device.

Fig. 9 is a schematic structural diagram of an electrical leakage detection apparatus in an embodiment 18 of an electrical device.

Fig. 10 is a schematic structural diagram of an electrical leakage detection apparatus 20 according to an embodiment of an electrical device.

Fig. 11 is a schematic structural diagram of an electrical leakage detection apparatus in an embodiment 21 of an electrical device.

Wherein: 1. discharge box 2, discharge needle 3, optic fibre 4, discharge chamber 5, trigger box 6, magnet 7, wire 8, induction coil 9, glass board 10, shell body.

Detailed Description

Fig. 1 is a preferred embodiment of the present invention, and the present invention will be further explained with reference to fig. 1 to 11.

Example 1:

as shown in fig. 1, an electrical leakage detecting apparatus for an electrical consumer includes a discharge box 1 and a trigger box 5. A plurality of independent discharge cavities 4 are formed in the discharge box 1 at intervals, two discharge needles 2 are fixed in each discharge cavity 4, the two discharge needles 2 respectively enter from two sides of the discharge cavity 4, the tips of the two discharge needles 2 are oppositely arranged in the discharge cavity 4, and a discharge gap is formed between the tips of the two discharge needles 2 at intervals.

One of the two discharge needles 2 oppositely arranged in each discharge cavity 4 is connected to a leakage detection point of an electric device (not shown in the figure), and as the discharge cavities 4 are arranged, the discharge needles 2 in different discharge cavities 4 can be arranged at different leakage detection points of the electric device. The other discharge needle 2 in all the discharge chambers 4 is grounded simultaneously.

An optical fiber 3 is arranged in each discharge cavity 4, and the optical fiber 3 is opposite to the discharge gap between the discharge needles 2. The external of the discharge box 1 is provided with a trigger box 5, the trigger box 5 is internally provided with a light trigger circuit, and the optical fiber 3 is led out from the discharge cavity 4 and then is connected into the trigger box 5 and is opposite to the light trigger circuit in the trigger box 5. The optical fiber 3 can be realized by a commercially available glass optical fiber or a plastic optical fiber.

In this embodiment, the optical trigger circuit in the trigger box 5 is implemented by a phototransistor, the collector of the phototransistor is connected to the power Vcc and the output terminal OUT, the output terminal OUT is connected to the input terminal of an external single chip (not shown), the emitter of the phototransistor is grounded, and all the optical fibers 3 face the optical receiving terminal of the phototransistor. When the optical fiber 3 does not send OUT an optical signal, the phototriode is cut off, and after the optical fiber 3 sends OUT the optical signal, the phototriode is switched on, so that the level of the signal sent OUT by the output end OUT phase singlechip is changed, and the singlechip drives the audible and visual alarm device to give an alarm according to the change of different levels.

Again, it should be noted that: the singlechip directly drives the bulb or/and the buzzer to perform sound-light alarm according to the level change of the input end of the singlechip or indirectly drives the bulb or/and the buzzer to perform sound-light alarm through the drive relay, belongs to the common knowledge in the field and the conventional means of the ordinary technicians in the field, and is realized without a specific software program.

The specific working process and working principle are as follows:

the discharge needles 2 in different discharge cavities 4 are connected to different leakage detection points of the electric equipment, the discharge needle 2 at the other end of each discharge cavity 4 is grounded, and when the electric equipment leaks electricity, discharge charges can enter the discharge cavity 4 through the discharge needle 2. The point discharge phenomenon can occur between the discharge gaps after the discharge charges enter the discharge cavities 4, electro-light can be generated after the point discharge phenomenon occurs, the discharge boxes 1 are made of opaque materials, and therefore the interior of each discharge cavity 4 is a dark environment, and after the electro-light occurs due to discharge in the discharge cavities 4, the optical fibers 3 facing the discharge gaps can transmit optical signals to the trigger boxes 5 and trigger the light trigger circuits in the trigger boxes.

After the optical circuit is triggered, a level signal at the input end of an external controller (singlechip) changes, and the singlechip drives an audible and visual alarm device to give an alarm to indicate that equipment leaks electricity, so that staff can conveniently perform people's investigation.

Example 2:

this example differs from example 1 in that: the circuit structure of the optical trigger circuit is different. As shown in fig. 2, in this embodiment, the photo-trigger circuit is replaced by a photo-sensitive transistor, a photo-sensitive diode and a general NPN transistor, and the triggering principle is the same as that of embodiment 1.

Example 3:

this example differs from example 1 in that: the circuit structure of the optical trigger circuit is different. As shown in fig. 3, in the present embodiment, the external single chip microcomputer is omitted, and a bulb is provided, which is connected in series between the power supply Vcc and the collector of the phototransistor. When the phototriode is triggered by the optical signal, the power supply circuit of the bulb is switched on to drive the bulb to emit light. The bulb can be replaced by a buzzer, and the bulb and the buzzer can also be arranged at the same time.

Example 4:

this example differs from example 1 in that: as shown in fig. 4, in the present embodiment, a plurality of trigger boxes 5 are provided, the number of the trigger boxes 5 corresponds to the number of the discharge chambers 4, and each optical fiber 3 led out from the discharge chamber 4 is connected into the corresponding trigger box 5.

In the present embodiment, the distances of the discharge gaps formed by the discharge needles 2 in each discharge chamber 4 are different, so that the higher the discharge voltage is, the longer the distance of the discharge gaps are broken down and discharged, and therefore, the present embodiment can detect the discharge and indirectly determine the voltage level of the discharge.

Example 5:

this example differs from example 1 in that: as shown in fig. 5, the discharge needles 2 in the discharge chamber 4 are connected to one place to form two groups, one group is connected to a leakage detection point of the consumer, and the other group of the discharge needles 2 is grounded.

Example 6:

this example differs from example 4 in that: the trigger box 5 is omitted, as shown in fig. 6, and in this embodiment the trigger box 5 is omitted, and the light trigger circuit inside the trigger box 5 is placed directly inside each discharge chamber 4.

Example 7:

this example differs from example 1 in that: the circuit structure of the optical trigger circuit is different. In this embodiment, other photosensitive elements are used to form the optical trigger circuit, such as a photoresistor.

Example 8:

this example differs from example 1 in that: as shown in fig. 7, the trigger box 5 is integrally designed with the discharge box 1, and the trigger box 5 is disposed at one side of the discharge box 1.

Example 9:

this example differs from example 1 in that: in the embodiment, the discharge chambers 4 are hermetically arranged and neon gas is filled in the discharge chambers 4, so that each discharge chamber 4 forms a neon bulb, and when electricity leakage occurs, the discharge needles 2 discharge to excite the neon bulbs to emit light.

Example 10:

this example differs from example 1 in that: in this embodiment, be provided with the orientation module who is connected with microprocessor, the accessible is ripe in this field such as GPS, big dipper location technology fixes a position the consumer to accessible wireless transmitting module sends the location coordinate through conventional communication technologies such as GPRS, consequently takes place the electric leakage back when the consumer, is convenient for fix a position the position of consumer.

Example 11:

this example differs from example 8 in that: as shown in fig. 8, in the present embodiment, the discharge box 1 is made of a metal material, a plurality of grooves are formed on any one end surface of the discharge box 1, a magnet 6 is disposed in each groove, and the discharge box 1 (and the trigger box 5) is fixed on the surface of the electrical equipment through the magnet 6. Because the discharge box 1 adopts the metal material, if when the consumer took place the electric leakage, the electric leakage current was collected and was discharged through discharge needle 2 through the shell of discharge box 1. In the present embodiment, the discharge needles 2 pass through the outer case of the discharge case 1, and an insulating layer is provided between the discharge case 1 and the discharge needles.

Example 12:

this example differs from example 8 in that: in this embodiment, the optical fiber 3 is not connected to the optical trigger circuit in the trigger box 5 after being led out from the discharge box 1, but a magnifying glass is arranged at the output end of the optical fiber 3 to magnify the light spot of the optical fiber 3, so as to play a role of warning.

Example 13:

this embodiment differs from embodiment 11 in that: in this embodiment, except for the bonding surface with the electrical equipment, at least one of the other five end surfaces of the discharge box 1 is made of a transparent material, and a mirror surface is arranged on the inner side of the discharge box 1, so that when a discharge phenomenon occurs in the discharge box 1, light is reflected to the outside through the mirror surface to play a role in warning.

Example 14:

this example differs from example 1 in that: in the embodiment, the detection of the electric leakage is realized by using a sound signal generated by point discharge, the optical fiber 3 is removed from the discharge cavity 4, the sound sensor is placed in the discharge cavity 4, and a signal wire of the sound sensor is led out from the discharge cavity 4 and is connected with a microprocessor in the trigger box 5. When the electric equipment generates sound due to point discharge, the sound sensor sends a signal to the microprocessor, and the microprocessor drives the alarm to give an alarm.

Example 15:

this example differs from example 1 in that: in the embodiment, the detection of the electric leakage is realized by using a sound signal generated by point discharge, the optical fiber 3 is removed from the discharge cavity 4, the hall sensor is placed in the discharge cavity 4, and a signal wire of the hall sensor is led out from the discharge cavity 4 and connected with a microprocessor in the trigger box 5. When the electric equipment discharges due to the point, the surrounding magnetic field changes, the Hall sensor sends a signal to the microprocessor, and the microprocessor drives the alarm to give an alarm.

Example 16:

this example differs from example 1 in that: in the embodiment, the detection of the electric leakage is realized by using a temperature signal generated by point discharge, the optical fiber 3 is removed from the discharge cavity 4, the temperature sensor is placed in the discharge cavity 4, and a signal wire of the temperature sensor is led out from the discharge cavity 4 and is connected with a microprocessor in the trigger box 5. When the electric equipment discharges due to the point, the ambient temperature changes, the temperature sensor sends a signal to the microprocessor, and the microprocessor drives the alarm to give an alarm.

Example 17:

this example differs from example 1 in that: the tip of the discharge needle 2 in this embodiment may take other forms such as a spherical surface, a circular tube end surface, a circular ring, a linear blade, a cross blade, a polygonal blade, a cylindrical surface, a corner angle, etc.

Example 18:

this example differs from example 1 in that: as shown in fig. 9, in the present embodiment, a support rod is disposed in each discharge chamber 4, and a wire is wound around the support rod to form an induction coil 8, one end of the induction coil 8 is led out through the wire 7 passing through the discharge case 1, and the other end is connected to the corresponding discharge needle 2 to achieve grounding. One end of the induction coil 8 is led out by a lead 7 and then is connected with a microprocessor in the trigger box 5 (not shown in the figure). When the electric equipment discharges due to the point, an electromagnetic signal is generated in the discharging cavity 4, the induction signal is induced by the induction coil 8 and then sends a signal to the microprocessor, and the microprocessor drives the alarm to give an alarm.

Example 19:

this example differs from example 18 in that: the induction coil 8 is not provided separately in each discharge chamber 4, but is wound integrally outside the discharge vessel 1.

Example 20:

this example differs from example 1 in that: as shown in fig. 10, in the present embodiment, a glass plate 9 is disposed in the discharge chamber 4, and the glass plate 9 isolates the optical fiber 3 from the discharge gap, so as to prevent the optical fiber 3 from being damaged by high temperature generated during discharge. The glass plate can also be realized by a glass cover which is fixed on the inner wall of the discharge chamber 4 and covers the optical fibers 3 therein.

Example 21:

this example differs from example 9 in that: as shown in fig. 11, since the discharge case 1 is made of a transparent material such as glass, the bright light emitted from the neon bulb formed in each discharge chamber 4 is transmitted through the discharge case 1 and radiated to the outside of the discharge case 1. An outer casing 10 is sleeved outside the discharge box 1, the outer casing 10 is made of opaque material, and the optical fiber 3 is located between the discharge box 1 and the outer casing 10 only through the outer casing 10. When electric leakage occurs, the discharge needle 2 discharges the discharge case 1 to emit light as a whole.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims (10)

1. An electric leakage detection device for an electric device, characterized in that: including discharge box (1), be provided with a plurality of independent discharge chambers (4) in discharge box (1), be provided with a set of discharge needle (2) that set up relatively in discharge chamber (4), one of them discharge needle (2) are drawn forth back and are connected with consumer from discharge chamber (4), another is drawn forth back ground connection from discharge chamber (4), interval formation discharge gap between two discharge needle (2), discharge needle (2) discharge in discharge gap department produces discharge signal, discharge signal draws forth from discharge chamber (4) and reports to the police.

2. A current leakage detecting device for a power consuming apparatus according to claim 1, wherein: a trigger box (5) is arranged on one side of the discharge box (1), the trigger box (5) and the discharge box (1) are integrally arranged, a trigger circuit is arranged in the trigger box (5), and the discharge signal is connected into the trigger circuit in the trigger box (5) and gives an alarm through the trigger circuit.

3. A current leakage detecting device for a power consuming apparatus according to claim 1, wherein: the discharge box (1) is made of metal, the discharge box (1) and the discharge needles (2) are insulated from each other, and the discharge box (1) is attached to the surface of the electric equipment through the magnets (6).

4. A current leakage detecting device for a power consuming apparatus according to claim 1, wherein: the distances of discharge gaps formed by the discharge needles (2) in the discharge cavity (4) are different; the trigger boxes (5) are provided with a plurality of trigger boxes and correspond to the discharge cavities (4) one by one.

5. A current leakage detecting device of a power consuming apparatus according to claim 2, characterized in that: the trigger circuit in the trigger box (5) is a light trigger circuit, and the light trigger circuit comprises a photosensitive element and an alarm device triggered by the photosensitive element; the optical signal generated by the discharge of the discharge needle (2) at the discharge gap is transmitted and accessed into the photo-trigger circuit through the optical fiber (3);

the discharge cavity (4) of the discharge box (1) is filled with neon gas, so that the discharge cavity (4) forms neon bulbs.

6. A current leakage detecting device for a power consuming apparatus according to claim 5, wherein: the discharge box (1) is made of transparent materials, an opaque outer shell (10) is further sleeved outside the discharge box (1), and the end of the optical fiber (3) penetrates through the outer shell (10) and then is located between the discharge box (1) and the outer shell (10).

7. A current leakage detecting device of a power consuming apparatus according to claim 2, characterized in that: the trigger circuit in the trigger box (5) is an electromagnetic trigger circuit, and an induction signal generated by the discharge of the discharge needle (2) at the discharge gap is connected into the electromagnetic trigger circuit through an electromagnetic induction element;

the electromagnetic induction element is an induction coil (8) or a Hall sensor, and the Hall sensor is placed in the discharge cavity (4); the induction coil (8) is fixed in the discharge cavity (4) or wound outside the discharge box (1).

8. A current leakage detecting device of a power consuming apparatus according to claim 2, characterized in that: the trigger circuit in the trigger box (5) is a temperature trigger circuit, and a temperature signal generated by discharging of the discharge needle (2) at the discharge gap is connected into the electromagnetic trigger circuit through a temperature sensor;

the trigger circuit in the trigger box (5) is a sound trigger circuit, and a temperature signal generated by discharging of the discharge needle (2) at the discharge gap is connected into the electromagnetic trigger circuit through a sound sensor.

9. A current leakage detecting device for a power consuming apparatus according to claim 1, wherein: the discharge cavity (4) is made of transparent materials, a reflector is arranged in the discharge cavity (4), and the reflector reflects light signals generated by discharge of the discharge needle (2) at a discharge gap to the outside of the discharge cavity (4).

10. A current leakage detecting device for a power consuming apparatus according to claim 1, wherein: optical fibers (3) are placed in the discharge cavity (4), optical signals generated by discharge of the discharge needles (2) at the discharge gaps are transmitted to the outside of the discharge cavity (4) through the optical fibers (3), and convex lenses for amplifying light spots are arranged at the light output ends of the optical fibers (3).

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