CN209911449U - High-voltage live display for switch cabinet - Google Patents
High-voltage live display for switch cabinet Download PDFInfo
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- CN209911449U CN209911449U CN201822086281.3U CN201822086281U CN209911449U CN 209911449 U CN209911449 U CN 209911449U CN 201822086281 U CN201822086281 U CN 201822086281U CN 209911449 U CN209911449 U CN 209911449U
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Abstract
The utility model discloses a high-voltage live display for cubical switchboard belongs to electric power auxiliary assembly field, which comprises an outer shell, power supply, detect the joint, the high pressure pilot lamp, one side of shell is equipped with the panel, the high pressure pilot lamp is located on the panel, power supply is used for the power supply, it is used for being connected with high-voltage electrical equipment electricity to detect the joint, the high pressure pilot lamp is connected with the detection joint electricity and is used for instructing whether high-voltage electrical equipment is electrified, the high-voltage live display still includes infrared induction module, power supply supplies power to infrared induction module, infrared induction module passes through the optoelectronic coupler electricity and connects in high pressure pilot lamp. Whether a person approaches the high-voltage charged display is detected by adopting an infrared sensing module, so that the aim of triggering the high-voltage charged display in a non-contact manner is fulfilled. Be in the state of extinguishing under the high-voltage indicator normality, when personnel were close to the cubical switchboard, infrared induction module detected the signal, and photoelectric coupler circular telegram, high-voltage indicator lights, shows that high-voltage electrical equipment has operating voltage, reminds personnel to keep a distance.
Description
Technical Field
The utility model relates to an electric power auxiliary assembly technical field especially relates to a high-voltage live display for cubical switchboard.
Background
In the field of electric power, in order to display whether high-voltage electrical equipment such as an incoming bus, a circuit breaker, a main transformer and the like in a switch cabinet is electrified or not so as to prevent electrical misoperation, a high-voltage electrified display is required to be equipped for providing information of the voltage state of a main loop where the high-voltage electrical equipment is detected for operation and inspection personnel. When the high-voltage electrical equipment has operating voltage, the electrified display emits flashing light to remind people of paying attention to the fact that the high-voltage electrical equipment in the switch cabinet is electrified with the operating voltage, and no indication is given when the high-voltage electrical equipment is not electrified.
At present, most of electrified displays are in contact type, a neon lamp is commonly used as a display element, the fault rate is high, the service life is short, the effect is poor, a high-voltage sensor of the electrified display is directly connected with high-voltage electrical equipment, and secondary voltage is obtained by adopting capacitance voltage division. Due to the high humidity and salinity of coastal areas, dust can adhere to the surface of the high-voltage sensor. Once the adhered dust is affected with damp, the leakage current is increased, the potential or voltage is raised, and the secondary loop of the charged display introduces high voltage, thereby causing the capacitive breakdown and soft breakdown accidents of the high-voltage sensor. When the intelligent monitoring system is used, the operation personnel directly press the switch with hands to obtain the working condition, so that the life safety can be endangered, and even the power failure accident of the equipment can be caused.
Because the high-voltage sensor of the existing electrified display is directly connected with high-voltage electrical equipment, potential safety hazards exist, non-contact high-voltage electrified displays are designed and produced by some manufacturers, incoming line buses are subjected to signal amplification within a certain distance range by using the electromagnetic induction principle, and the purpose of controlling a driving device of the electrified display is achieved. However, the signal detection is disturbed due to the variation of medium parameters such as temperature and humidity in the air. Moreover, the electric field sensor of the non-contact type electrified display needs to keep a certain safety distance with the incoming line bus, the installation precision requirement of the non-contact type electrified display is high, the existing switch cabinet does not have enough space for installing the non-contact type electrified display, and the cost is huge and the non-contact type electrified display is not practical if the existing switch cabinet needs to be replaced.
SUMMERY OF THE UTILITY MODEL
In order to solve the shortcoming and the deficiency that exist among the above-mentioned prior art, the utility model provides a can realize that non-contact triggers and be applicable to the high voltage live display of current cubical switchboard.
In order to realize the technical purpose, the utility model provides a high-voltage live display for cubical switchboard, including shell, power supply, detection joint, high-pressure pilot lamp, power supply is used for the power supply, and one side of shell is equipped with the panel, and on the panel was located to the high-pressure pilot lamp, the detection joint was used for being connected with high-voltage electrical equipment electricity, and the high-pressure pilot lamp is connected with the detection joint electricity and is used for instructing whether high-voltage electrical equipment is electrified, the high-pressure live display is still including locating the infrared induction module in the shell, and power supply supplies power to infrared induction module, and infrared induction module passes through the photoelectric coupler electricity and connects in high-pressure pilot lamp.
Preferably, the infrared induction module is electrically connected to a circuit of the high-voltage indicator lamp and is provided with a signal amplification module and a shaping module in series.
Preferably, the infrared sensing module is electrically connected to a circuit of the high-voltage indicator lamp and is provided with a delay control module in series for controlling the display time of the high-voltage indicator lamp.
Preferably, the output circuit of the power supply is provided with a first rectifying module in series.
Preferably, the high-voltage live display further comprises a power failure detection module and a fault indicator lamp, wherein the power failure detection module is electrically connected to the power supply and is used for detecting whether the power supply fails, and the fault indicator lamp is electrically connected to the power failure detection module and is used for indicating whether the power supply fails.
Preferably, the power failure detection module is electrically connected to a circuit of the power supply in series and provided with a voltage reduction resistor.
Preferably, the high-voltage charged display further comprises a storage battery, and the storage battery supplies power when the power supply fails.
Preferably, the high-voltage electrified display further comprises a power indicator lamp for indicating whether the power supply is normal, and the power indicator lamp is electrically connected to the output circuit of the power supply.
Preferably, the high-voltage electrified display further comprises a safety switch, a control module for controlling the safety switch, a locking indicator lamp and an unlocking indicator lamp, wherein the locking indicator lamp and the unlocking indicator lamp are used for indicating the state of the safety switch, the locking indicator lamp and the unlocking indicator lamp are electrically connected to the control module, the locking indicator lamp is electrically connected to the infrared induction module and the detection connector, and the control module is electrically connected to the detection connector.
Preferably, a second rectification module is arranged on a circuit of the locking indicator lamp electrically connected to the detection connector, and the control module is electrically connected to the detection connector through the second rectification module.
After the technical scheme is adopted, the utility model has the advantages of as follows:
1. the utility model provides a high-voltage live display for cubical switchboard improves the concrete structure of current non-contact high-voltage live display, adopts infrared induction module to survey whether someone is close to, realizes the purpose of non-contact trigger high-voltage live display. The high-voltage indicator lamp is electrically connected with the high-voltage electrical equipment through the detection connector and is in an extinguishing state in a normal state. When personnel are close to the switch cabinet, after the infrared sensing module detects a signal, the photoelectric coupler is electrified, the high-voltage indicator lamp is lightened, the high-voltage electrical equipment in the switch cabinet is indicated to have operating voltage, the personnel are reminded to keep a safe distance, and safety accidents are avoided. Because the infrared induction module is not influenced by parameters such as temperature and humidity of air, and does not need to keep a specific safety distance with high-voltage electrical equipment, the installation precision requirement is not high, the infrared induction module can be widely applied to the existing switch cabinet, and the actual application can be well met.
2. The signal detected by the infrared sensing module is amplified and adjusted by the additionally arranged signal amplification module and the shaping module, so that the requirement of integral control operation is met.
3. When the personnel leave the detection range of infrared induction module, through the suitable extension high pressure indicator's of the time delay control module who establishes that adds display time, better satisfying warning operation requirement.
4. Carry out real-time detection to power supply through adding the power failure detection module who establishes, when power supply breaks down, the fault indicator lights, reminds the maintainer in time to overhaul power supply to guarantee the whole normal operating of ability of high-voltage electrified display.
5. When the power supply fails, the additionally arranged storage battery is used as a standby power supply to supply power to all electric elements of the high-voltage electrified display, so that the high-voltage electrified display can normally operate under the condition that the power supply fails.
6. The safety switch is arranged in the switching of control switch cabinet door, and when high-voltage electrical equipment had operating voltage, control module made the safety switch lock the cabinet door, when the detection range of maintainer appearance infrared induction module, the shutting pilot lamp was lighted, reminds the cabinet door to be in the closed condition and can't open. Under the high-voltage electrical equipment outage condition, when the maintainer appeared in the detection range of infrared induction module, the unblock pilot lamp was lighted, reminds the cabinet door to be in can the open mode, and the maintainer can directly open the cabinet door and overhaul the inside high-voltage electrical equipment of cubical switchboard. The safety of operation when further improving the maintenance through safety switch and control module avoids taking place the incident.
Drawings
Fig. 1 is a control schematic diagram of a high voltage live display for a switch cabinet according to an embodiment of the present invention;
fig. 2 is a schematic view of a panel portion in a high voltage live display for a switch cabinet according to an embodiment of the present invention.
In the figure, 1-power supply, 2-detection joint, 3-high-voltage indicator light, 4-infrared induction module, 5-first rectification module, 6-voltage reduction module, 7-first photoelectric coupler, 8-signal amplification module, 9-shaping module, 10-time delay control module, 11-power indicator light, 12-power failure detection module, 13-failure indicator light, 14-second photoelectric coupler, 15-voltage reduction resistor, 16-safety switch, 17-control module, 18-locking indicator light, 19-unlocking indicator light, 20-second rectification module, 21-third photoelectric coupler, 22-fourth photoelectric coupler, 23-panel, 24-window and 25-storage battery.
Detailed Description
Example one
As shown in fig. 1, the embodiment of the present invention provides a high voltage live display for switch cabinet, including shell, power supply 1, detection joint 2, high pressure indicator lamp 3, one side of shell is equipped with panel 23, and high pressure indicator lamp 3 is located on panel 23. The power supply 1 is used for supplying power to each electric element of the electrified display, the detection joint 2 is used for being electrically connected with high-voltage electrical equipment, and the high-voltage indicator lamp 3 is electrically connected with the detection joint 2 and is used for indicating whether the high-voltage electrical equipment is electrified or not. The high-voltage electrified display also comprises an infrared induction module 4 arranged in the shell, the power supply 1 supplies power to the infrared induction module 4, and the infrared induction module 4 is electrically connected with the high-voltage indicator lamp 3 through a first photoelectric coupler 7.
The high-voltage indicator lamp is electrically connected with the high-voltage electrical equipment through the detection connector and is in an extinguishing state in a normal state. When personnel are close to the switch cabinet equipment, after the infrared sensing module detects a signal, the photoelectric coupler is electrified, the high-voltage indicator lamp is lightened, the high-voltage electrical equipment is indicated to have operating voltage, the personnel are reminded to keep a safe distance, and safety accidents are avoided.
In this embodiment, three detection joints 2 are provided, and correspond to the phases a, B, and C of the high-voltage electrical equipment, respectively. During the use, three detection connector 2 electricity respectively connects in the cubical switchboard three-phase of inlet wire generating line. Correspondingly, the high-voltage indicator lamp 3 is also provided with three, is connected with three detection joint 2 one-to-one electricity, and the high-voltage indicator lamp ground connection sets up. For the sake of convenience of distinction, the inspection terminal 2 and the high pressure indicating lamp 3 corresponding to a are represented by yellow, the inspection terminal 2 and the high pressure indicating lamp 3 corresponding to B are represented by green, and the inspection terminal 2 and the high pressure indicating lamp 3 corresponding to C are represented by red. Preferably, the high-voltage indicator lamp 3 is an LED lamp.
In this embodiment, the power supply 1 is powered by commercial power, and in order to make the supply current meet the use requirement, the output circuit of the power supply 1 is connected in series with a first rectification module 5, and the first rectification module is used for rectifying the alternating current into direct current.
In this embodiment, the infrared sensing module 4 adopts an infrared sensor, and since the operating voltage of the infrared sensor is small, the infrared sensing module 4 is electrically connected to the circuit of the first rectification module 5 in series with the voltage reduction module 6, and specifically, the voltage reduction module 6 can adopt a direct current voltage reducer.
In order to enable the detection signal of the infrared induction module 4 to smoothly trigger the first photoelectric coupler 7, a signal amplification module 8 and a shaping module 9 are connected in series on a circuit electrically connected with the first photoelectric coupler and the infrared induction module. Utilize signal amplification circuit 8 to carry out appropriate conversion and amplification to the signal that infrared induction module 4 detected, utilize shaping module 9 to carry out the wave form amplitude limiting shaping to the signal after the amplification, convert the light signal that infrared induction module 4 detected into stable current signal to make high pressure pilot lamp 3 keep stable indicating effect when lighting through first photoelectric coupler 7.
In order to meet the purpose that a maintainer leaves the detection range of the infrared induction module 4 and the high-voltage indicator lamp 3 can continue to prompt, a delay control module 10 is further connected in series on a circuit electrically connected with the first photoelectric coupler 7 of the infrared induction module 4, and the delay control module 10 is specifically arranged on a circuit between the shaping module 9 and the first photoelectric coupler 7. In this embodiment, the delay control module 10 may adopt a delay relay, and when the maintainer leaves the detection range of the infrared sensing module 4, the delay relay is turned off after delaying for 3s to 10s, so that the high-voltage indicator lamp 3 is turned off after delaying for 3s to 10 s.
In order to indicate whether the power supply 1 can supply power normally, the high-voltage live display of the embodiment further includes a power indicator 11 for indicating whether the power supply 1 is normal. In this embodiment, the power indicator 11 is electrically connected to the voltage-reducing module 6.
In order to remind the maintainer in time when the power supply 1 fails, the high-voltage live display of the embodiment further comprises a power failure detection module 12 and a fault indicator lamp 13, wherein the power failure detection module 12 is electrically connected to an output circuit of the power supply 1 and is used for detecting whether the power supply fails, and the fault indicator lamp 13 is electrically connected to the power failure detection module 12 and is used for indicating whether the power supply 1 fails.
In this embodiment, for convenience of distinction, the power indicator 11 may be a green light, and the fault indicator 13 may be a red light. The power failure detection module 12 is electrically connected to the output end of the first rectification module 5 through a second photoelectric coupler 14, and the power failure detection module 12 is electrically connected to the circuit of the first rectification module 5 and is also connected in series with a voltage reduction resistor 15.
In order to ensure that the whole high-voltage live display can normally operate when the power supply 1 fails, the high-voltage live display of the embodiment is further provided with a storage battery 25. When the power supply 1 fails, the additionally arranged storage battery 25 serves as a standby power supply to supply power to all power utilization elements, so that the whole high-voltage live display can normally operate under the condition that the power supply fails.
When the high-voltage live display of the embodiment is used for a switch cabinet, in order to improve the safety of maintenance, the high-voltage live display further comprises a safety switch 16, a control module 17 for controlling the safety switch, a locking indicator lamp 18 and an unlocking indicator lamp 19 for indicating the state of the safety switch, and both the locking indicator lamp 18 and the unlocking indicator lamp 19 are controlled by the control module 17. The lock indicator light 18 is electrically connected to the control module 17, and the unlock indicator light 19 is also electrically connected to the control module.
In this embodiment, the safety switch 16 is used to control the opening and closing of the cabinet door in the switch cabinet, and an existing electromagnetic lock may be used. The locking indicator lamp 18 is electrically connected to the detection connector 2 through the second rectifier module 20, and the locking indicator lamp 18 is electrically connected to the delay control module 10 through the third photocoupler 21. The control module 17 is electrically connected to the output terminal of the first rectifying module 5, and meanwhile, the control module 17 is electrically connected to the second rectifying module 20 through the fourth photoelectric coupler 22, and the second rectifying module 20 is grounded.
Referring to fig. 2, a power indicator light 11, a fault indicator light 13, a lock indicator light 18, and an unlock indicator light 19 are also provided on the panel 23. The panel 23 is provided with a window 24 corresponding to the infrared sensing module 4, and transparent glass is fixed at the window.
Under the high-voltage electrical equipment in the cubical switchboard had the operating voltage condition, when the maintainer got into infrared induction module 4's detection range, infrared induction module 4 produced the sensing signal, and first photoelectric coupler 7 switches on, and high pressure pilot lamp 3 lights, reminds the high-voltage electrical equipment in the maintainer cubical switchboard to have operating voltage. Meanwhile, the third photoelectric coupler 21 is turned on, the locking indicator lamp 18 is turned on, and the cabinet door of the switch cabinet for the maintainer is reminded of being in a closed state and cannot be opened.
Under the condition of power failure of high-voltage electrical equipment in the switch cabinet, when a maintainer is in the detection range of the infrared induction module 4, the high-voltage indicator lamp 3 and the locking indicator lamp 18 are in a normally-off state. Meanwhile, the fourth photoelectric coupler 22 is still in a disconnected state, the control module 17 provides current to the unlocking indicator lamp 19 according to the disconnection information of the fourth photoelectric coupler 22 to enable the unlocking indicator lamp to be electrified and lightened, the cabinet door of the maintenance personnel is reminded of being in a openable state, the control module 17 cuts off the current of the safety switch 16 at the same time, the safety switch is powered off and unlocked, and the maintenance personnel can directly open the cabinet door to maintain high-voltage electrical equipment in the switch cabinet.
It is understood that the detection connector 2 may be a power connector or the like, and of course, the detection connector may also be a current sensor or a voltage sensor.
It is understood that the first and second rectifier modules 5 and 20 may employ existing rectifiers.
It is understood that other reasonable voltage reducing structures in the prior art can be adopted for the voltage reducing module 6.
It is understood that the signal amplification module 8 may employ an existing infrared sensing amplifier.
It will be appreciated that the shaping module 9 may employ existing rectifiers.
It will be appreciated that other reasonable delay power configurations known in the art may be used for the delay control module 10.
It is understood that the power failure detection module 12 may adopt a reasonable structure such as a power failure detection circuit in the prior art.
It is understood that the control module 17 may employ a PLC controller.
In addition to the above preferred embodiments, the present invention has other embodiments, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope defined by the appended claims.
Claims (7)
1. The high-voltage electrified display for the switch cabinet comprises a shell, a power supply, a detection joint and a high-voltage indicator lamp, wherein a panel is arranged on one side of the shell, the high-voltage indicator lamp is arranged on the panel, the power supply is used for supplying power, the detection joint is used for being electrically connected with high-voltage electrical equipment, and the high-voltage indicator lamp is electrically connected with the detection joint and is used for indicating whether the high-voltage electrical equipment is electrified or not; the infrared induction module is electrically connected to a circuit of the high-voltage indicator lamp and is provided with a signal amplification module and a shaping module in series; the infrared induction module is electrically connected with a circuit of the high-voltage indicator lamp and is provided with a delay control module used for controlling the display time of the high-voltage indicator lamp in series; and the output circuit of the power supply is connected with a first rectifying module in series.
2. The high voltage live display according to claim 1, further comprising a power failure detection module electrically connected to the power supply and configured to detect whether the power supply fails, and a fault indicator light electrically connected to the power failure detection module and configured to indicate whether the power supply fails.
3. The high voltage live display according to claim 2, wherein the power failure detection module is electrically connected to a circuit of the power supply in series with a voltage reduction resistor.
4. The high voltage live display according to claim 1, further comprising a battery that supplies power when the power supply fails.
5. The high voltage live display according to claim 1, further comprising a power indicator for indicating whether the power supply is normal, wherein the power indicator is electrically connected to an output circuit of the power supply.
6. The high-voltage electrified display device according to claim 1, further comprising a safety switch, a control module for controlling the safety switch, a locking indicator light and an unlocking indicator light for indicating the state of the safety switch, wherein the locking indicator light and the unlocking indicator light are electrically connected to the control module, the locking indicator light is electrically connected to the infrared sensing module and the detection connector, and the control module is electrically connected to the detection connector.
7. The high voltage live display according to claim 6, wherein the circuit electrically connected to the detection connector of the locking indicator lamp is provided with a second rectifying module, and the control module is electrically connected to the detection connector through the second rectifying module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822086281.3U CN209911449U (en) | 2018-12-12 | 2018-12-12 | High-voltage live display for switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822086281.3U CN209911449U (en) | 2018-12-12 | 2018-12-12 | High-voltage live display for switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209911449U true CN209911449U (en) | 2020-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822086281.3U Active CN209911449U (en) | 2018-12-12 | 2018-12-12 | High-voltage live display for switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209911449U (en) |
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2018
- 2018-12-12 CN CN201822086281.3U patent/CN209911449U/en active Active
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