Smart power grid distribution cabinet alarm device and distribution cabinet

Abstract

The present invention discloses an alarm device and a distribution cabinet for a smart grid, belonging to the technical field of distribution cabinets. It includes a monitoring terminal, a pipeline unit, an alarm unit, an audible and visual alarm, a detection unit, a fire extinguishing gas unit and an alarm monitoring unit, wherein the monitoring terminal is connected to the wiring terminal of the distribution cabinet; the pipeline unit includes a mounting plate, a heat dissipation detection tube group and a fire extinguishing tube group, wherein the heat dissipation detection tube group includes a first tube body, a plurality of first electric control valves are connected to the first tube body, and the other end of the first electric control valve is connected to a tee, and an L-shaped telescopic tube is rotatably plugged at the bottom of the tee; a filter cover is connected to the bottom of the telescopic tube; a locker is provided at the bottom of the mounting plate to lock with the telescopic tube; the alarm device and the distribution cabinet for a smart grid of the present invention can detect abnormalities of the distribution cabinet in time, give an alarm in time when abnormalities occur, and can protect the internal units of the distribution cabinet, and the maintenance and debugging are highly safe.

Description

Technical Field

[0001] The present invention specifically relates to a smart power grid distribution cabinet alarm device and a distribution cabinet, and belongs to the technical field of distribution cabinets. Background Art

[0002] The power distribution cabinet is the final equipment of the power distribution system and is an essential unit to ensure the normal use of electricity. Therefore, it is necessary to monitor its safety to avoid the occurrence of power accidents. However, the power distribution cabinets on the market do not have an alarm function. When the power distribution cabinet is working, it is easy to cause problems such as circuit overload of the power distribution cabinet or internal environment problems of the power distribution cabinet. Usually, the operation and maintenance personnel will check the on-site situation and deal with it after the accident of the power distribution cabinet. The problem handling is delayed. If the abnormal situation of the power distribution cabinet cannot be discovered in time, it will cause serious power accidents in the power distribution cabinet. For this reason, China Patent Authorization Announcement No.: CN114440981B discloses a smart The power grid distribution cabinet alarm device and the distribution cabinet detect the circuit of the distribution cabinet through the detection control module of the detection mechanism, and detect the temperature, humidity and smoke conditions inside the distribution cabinet through the environmental data acquisition module of the detection mechanism. When the detection control module finds that the distribution cabinet is abnormal based on the circuit detection situation and the environmental data detection situation, the bell mechanism and the alarm light module respectively sound the bell alarm and the light alarm, thereby solving the problem that the existing distribution cabinet does not have an alarm function; the existing distribution cabinet cannot be monitored in advance for abnormalities, and cannot be actively intervened when a high-risk fault occurs. In addition, when the distribution cabinet is repaired, it is easy to operate under power, and the maintenance risk is high. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a smart grid distribution cabinet alarm device and a distribution cabinet, which can detect abnormalities in the distribution cabinet in time, alarm in time when abnormalities occur, and protect the internal units of the distribution cabinet, with high safety in maintenance and debugging.

[0004] The smart grid distribution cabinet alarm device of the present invention comprises:

[0005] A monitoring terminal, which is connected to the wiring terminal of the power distribution cabinet; the monitoring terminal can monitor the temperature, current, voltage and other data of the wiring terminal of the power distribution cabinet in real time;

[0006] A pipeline unit, the pipeline unit includes a mounting plate, a heat dissipation detection tube group and a fire extinguishing tube group, the heat dissipation detection tube group includes a first tube body, a plurality of first electrically controlled valves are connected to the first tube body, the other end of the first electrically controlled valve is connected to a tee, an L-shaped telescopic tube is rotatably plugged at the bottom of the tee; a filter cover is connected to the bottom of the telescopic tube; a locker is provided at the bottom of the mounting plate to lock the telescopic tube; the fire extinguishing tube group includes a second tube body, a connecting tube connected to the top of the tee is provided at the bottom of the second tube body; the second tube body and the first tube body are connected through an oblique tube; the upper end of the oblique tube is sealed and embedded in the first tube body; the oblique tube is provided with a threaded hole inside the first tube body; a transition tube is connected to the first tube body, and a threaded groove is provided outside the transition tube;

[0007] An alarm unit, the alarm unit comprising an alarm box arranged on the top of the outer side of the power distribution cabinet; a cover is arranged at the front end of the alarm box, and a control unit for the whole machine control is fixed inside the alarm box; the transition pipe is movably inserted into the inner side of the alarm box, and an upper pressure plate and a lower pressure plate are screwed on the threaded groove, and the upper pressure plate is pressed tightly against the bottom surface of the inner side of the power distribution cabinet; the lower pressure plate is pressed tightly against the top surface of the inner side of the power distribution cabinet; the upper pressure plate and the lower pressure plate cooperate to tightly install the alarm box and the power distribution cabinet;

[0008] A sound and light alarm, wherein a plurality of the sound and light alarms are provided and fixed to the outer top surface of the alarm box;

[0009] The detection unit includes a detection tube warehouse, which is fixed inside the alarm box; a gas transmitter and an induced draft fan are arranged inside the detection tube warehouse; one end of the detection tube warehouse is connected to the top of the transition pipe through a bend pipe, and the other end is connected to the outside of the alarm box;

[0010] The fire extinguishing gas unit comprises a conduit integrally formed on a curved pipe; a stamping pipe is arranged on the inner side of the conduit through a sealing ring; the bottom of the stamping pipe is screwed to the threaded hole of the inclined pipe; the upper part of the stamping pipe is connected to the gas tank outside the alarm box through a second electric control valve;

[0011] An alarm monitoring unit is arranged on the cover.

[0012] The monitoring terminal sends the monitoring data to the control unit in real time. When the monitoring data reaches the first threshold line, the gas transmitter and the induced draft fan are triggered. When the monitoring data reaches the second threshold line, the sound and light alarm starts to alarm. When the monitoring data reaches the third threshold line, or the time value from the second threshold line to the third threshold line is lower than the set line, the sound and light alarm keeps alarming, and the fire extinguishing gas unit directly performs the fire extinguishing operation. In the early stage of the risk, it can be detected in time to eliminate the high risk.

[0013] When the gas transmitter and the induced draft fan are in operation, the control unit first determines which monitoring terminal has collected data exceeding the first threshold line, and opens the corresponding first electrically controlled valve. The induced draft fan is turned on, and the induced draft fan extracts the gas around the corresponding functional unit in the distribution cabinet through the filter cover, and enters the detection tube warehouse through the telescopic tube, the tee, the first electrically controlled valve, the first tube body, the transition tube and the elbow in turn. The gas is detected by the gas transmitter in the detection tube warehouse to determine whether the gas contains high-risk components or whether a certain high-risk component exceeds the set value; when it is determined that there are no high-risk components in the gas or a certain high-risk component does not exceed the set value; no action is taken; when it is determined that there are high-risk components in the gas or a certain high-risk component exceeds the set value; the sound and light alarm starts to alarm, and the fire extinguishing gas unit directly performs the fire extinguishing operation;

[0014] When the fire extinguishing gas unit is in operation, the second electric control valve opens, and the high-pressure gas in the gas tank is pumped into the second pipe body through the second electric control valve, the stamping pipe and the inclined pipe, and the high-pressure gas is distributed through the second pipe body, and the high-pressure gas is sent to each functional unit in the distribution cabinet through the connecting pipe, the tee, the telescopic pipe and the filter cover; the high-pressure fire extinguishing gas can perform high-pressure fire extinguishing on the functional unit where the fault occurs, and at the same time can defensively spray high-pressure fire extinguishing gas on other functional units, and can directly perform fire extinguishing operations.

[0015] Furthermore, it also includes an electric switch connected in series to the control circuit of the distribution cabinet circuit breaker, and the control end of the electric switch is connected to the control unit; the control unit can control the opening and closing of the electric switch, thereby controlling the on and off of the control circuit of the distribution cabinet circuit breaker, thereby controlling the on and off of the distribution cabinet circuit breaker; realizing power-on and power-off operations.

[0016] Furthermore, it includes a plurality of pipe hoops fixed to the front end of the cover, wherein a toothed ring is provided on the inner side of the pipe hoops; a pipe seat is inserted into the inner side of the toothed ring, and a toothed groove engaging with the toothed ring is provided on the outer side of the pipe seat; a straight groove is provided axially on the pipe seat, and a plurality of infrared probes are installed in the straight groove at intervals; a pyroelectric sensor is installed at the front end of the pipe hoops; a clamping ring is integrally formed on the outer side of the middle part of the pipe seat; a hinged seat is fixed to the front end of the cover, a clamping seat is hinged on the hinged seat, and the clamping seat is movably engaged with the clamping ring; an edge plate is integrally formed at the bottom of the cover, a plurality of proximity switches are embedded on the edge plate, and a detection plate is arranged opposite to the bottom of the proximity switch, The detection board is fixed to the top of the door of the power distribution cabinet; when in use, a safety monitoring surface is established on the front side of the power distribution cabinet, and the establishment process is as follows: first, flip up the card seat to disengage the card seat from the clamp, then slide the pipe seat to separate the tooth groove of the pipe seat from the tooth ring of the pipe clamp, then rotate the pipe seat and adjust the infrared probe monitoring surface on the pipe seat so that no alarm is issued when the operator enters the front of the power distribution cabinet; when the hand approaches the door of the power distribution cabinet, the hand enters the safety monitoring surface, and an alarm is issued at this time; after completing the adjustment of the angle of the pipe seat, re-engage the tooth groove of the pipe seat with the tooth ring of the pipe clamp, then flip down the card seat to make the card seat and the clamp ring movably engage, and the operation is completed. The tube socket is locked. When in use, the infrared probe is in silent mode; when an operator enters the front of the distribution cabinet and is detected by the pyroelectric sensor, the infrared probe is turned on again. When the operator leaves the distribution cabinet, the infrared probe re-enters silent mode; when the monitoring terminal detects current and the infrared probe detects that the operator is approaching the door of the distribution cabinet, the sound and light alarm continues to flash and sound the voice alarm. When the operator swings his hand from one end of the tube socket to the other end for a set number of times within the set time, the sound and light alarm sends out a power-off signal. When the hand swings in the opposite direction along the tube socket for a set number of times, the control unit controls the Control power-off operation; when the door of the distribution cabinet is forced to open, the proximity switch on the board is separated from the detection board, and the proximity switch gives a signal to the control unit, and the control unit forces the power-off operation; when the inspection is completed and power-on debugging is required, the operator swings his hand from one end of the pipe socket to the other end a set number of times within the set time, and the sound and light alarm sends out whether to restore power. When the hand swings in the opposite direction along the pipe socket a set number of times, the power-on operation is performed; after the inspection is completed, the power can be cut off first and then restored according to the above process; when the door of the distribution cabinet is closed without powering off, the control unit automatically cuts off the power, and after a delay of the set time, it automatically restores the power.

[0017] Furthermore, the monitoring terminal includes a copper nose connected to the power distribution cabinet terminal, and a thermal conductive potting glue is cast on the inner side of the copper nose; an insulating head is fixed to the rear end of the copper nose; a temperature transmitter is wrapped on the inner side of the thermal conductive potting glue; a current transformer is fixed to the front end of the monitoring terminal, a compartment is provided on the inner side of the insulating head, a control board is fixed on the inner side of the compartment, and a transceiver antenna connected to the control board is fixed on the outside of the insulating head; the thermal conductive potting glue can encapsulate the temperature transmitter and provide structural support; the power distribution cabinet terminal transfers electrical energy and thermal energy to the copper nose, and the thermal energy is transferred to the temperature transmitter through the thermal conductive potting glue, and the temperature The temperature transmitter transmits the real-time collected temperature to the control board, and at the same time, the current transformer transmits the collected current to the control board; and the temperature data and current data processed by the control board are sent to the control unit through the transceiver antenna; when the control unit detects that the temperature data or current data exceeds the first threshold, the induced draft fan is turned on, and the gas transmitter is used to monitor in real time whether the gas contains marker gases such as acetylene, SF6 and nitrogen oxides. When the detected gas contains marker gas or the marker gas content exceeds the set value, the second electric control valve is triggered, so that the high-pressure fire extinguishing gas inside the gas tank directly impacts the internal unit of the distribution cabinet to protect the internal unit.

[0018] Furthermore, a current induction coil is fixedly sleeved on the copper nose; the current induction coil is connected to the control board through a power management circuit; the power management circuit is also connected to a ground wire; when working, an induced current can be obtained through the current induction coil, and the induced current is converted into charging electric energy through the power management circuit and sent to the battery; the battery can power the control board through the power management circuit.

[0019] Furthermore, the locking device includes a pressing frame fixed to the bottom of the hanging plate, a rack is arranged on the inner side of the pressing frame; a plurality of spring bodies are arranged between the rack and the pressing frame; both sides of the front end of the pressing frame are integrally formed into limiting blocks; bolt bodies that limit the ends of the rack are arranged at both ends of the pressing frame; a toothed disc that is engaged with the rack is fixed on the telescopic tube; during operation, the position of the filter cover can be adjusted according to the position of the internal unit of the distribution cabinet, and when adjusting, the telescopic tube is pulled longitudinally or transversely to make the filter cover reach the height of the internal unit and close to the internal unit; then, the rack is pushed to compress the spring body through the rack At this time, the rack is separated from the toothed disc, so that the telescopic tube can rotate along the tee, so that the filter cover can be directly opposite to the internal unit, so that the filter cover can be adjusted in the direction, horizontal direction and height direction to make the filter cover close to the internal unit; after the adjustment is completed, the rack is loosened, and the spring body pushes the rack to lock the rack and the toothed disc, and the tee and the telescopic tube are locked by bolts. After the adjustment is completed, the air extraction port of the pipeline unit and the fire extinguishing gas blowing port are directly opposite to the internal unit; thereby ensuring the accuracy of the air extraction detection and accurately delivering the fire extinguishing gas to the internal unit, and realizing efficient fire extinguishing and explosion prevention of the internal unit.

[0020] A power distribution cabinet comprises a power distribution cabinet body and a smart power grid power distribution cabinet alarm device installed on the power distribution cabinet body.

[0021] Compared with the prior art, the smart grid distribution cabinet alarm device and distribution cabinet of the present invention can detect and alarm in advance when an abnormality occurs in the distribution cabinet. When it is determined to be a high-risk risk, it can actively intervene to eliminate the risk and protect the internal units of the distribution cabinet. During maintenance, it can achieve active or passive power outages to ensure the safety of maintenance. After the maintenance is completed, the power can be disconnected from the distribution cabinet, and the maintenance and debugging are highly safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the pipeline unit of the present invention.

[0023] Figure 2 It is a schematic diagram of the internal structure of the alarm unit of the present invention.

[0024] Figure 3 It is a schematic diagram of the installation structure of the power distribution cabinet and the alarm unit of the present invention.

[0025] Figure 4 It is a schematic diagram of the installation structure of the power distribution cabinet, alarm unit and alarm monitoring unit of the present invention.

[0026] Figure 5 For the present invention Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0027] Figure 6 It is a schematic diagram of the internal structure of the monitoring terminal of the present invention.

[0028] Figure 7 It is a schematic diagram of the overall structure of the monitoring terminal of the present invention.

[0029] Figure 8 It is a schematic diagram of the overall structure of the lock device of the present invention.

[0030] Figure numerals: 1, mounting plate, 2, first pipe body, 3, first electric control valve, 4, tee, 5, telescopic pipe, 6, filter cover, 7, second pipe body, 8, inclined pipe, 9, transition pipe, 10, threaded groove, 11, power distribution cabinet, 12, alarm box, 13, cover, 14, control unit, 15, upper pressure plate, 16, lower pressure plate, 17, sound and light alarm, 18, detection pipe warehouse, 19, gas transmitter, 20, induced draft fan, 21, elbow, 22, conduit, 23, stamping pipe, 24, second electric control valve, 25, gas Tank, 26. Pipe clamp, 27. Pipe seat, 28. Straight groove, 29. Infrared probe, 30. Pyroelectric sensor, 31. Clamp, 32. Holder, 33. Edge plate, 34. Proximity switch, 35. Detection board, 36. Copper nose, 37. Thermal conductive potting glue, 38. Insulating head, 39. Temperature transmitter, 40. Current transformer, 41. Transceiver antenna, 42. Current sensing coil, 43. Ground wire, 44. Press frame, 45. Rack, 46. Spring body, 47. Limit block, 48. Bolt body, 49. Toothed disc. DETAILED DESCRIPTION

[0031] Example:

[0032] like Figures 1 to 8 The smart grid distribution cabinet alarm device shown includes:

[0033] A monitoring terminal, which is connected to the wiring terminal of the power distribution cabinet; the monitoring terminal can monitor the temperature, current, voltage and other data of the wiring terminal of the power distribution cabinet in real time;

[0034] A pipeline unit, the pipeline unit includes a mounting plate 1, a heat dissipation detection tube group and a fire extinguishing tube group, the heat dissipation detection tube group includes a first tube body 2, a plurality of first electrically controlled valves 3 are connected to the first tube body 2, the other end of the first electrically controlled valve 3 is connected to a tee 4, an L-shaped telescopic tube 5 is rotatably plugged at the bottom of the tee 4; a filter cover 6 is connected to the bottom of the telescopic tube 5; a locker that is locked with the telescopic tube 5 is provided at the bottom of the mounting plate 1; the fire extinguishing tube group includes a second tube body 7, a connecting tube that is connected to the top of the tee 4 is provided at the bottom of the second tube body 7; the second tube body 7 and the first tube body 2 are connected through an oblique tube 8; the upper end of the oblique tube 8 is sealed and embedded in the first tube body 2; the oblique tube 8 is provided with a threaded hole inside the first tube body 2; a transition tube 9 is connected to the first tube body 2, and a threaded groove 10 is provided on the outside of the transition tube 9;

[0035] An alarm unit, the alarm unit comprises an alarm box 12 arranged on the top of the outer side of the power distribution cabinet 11; a cover 13 is arranged at the front end of the alarm box 12, and a control unit 14 for whole machine control is fixed inside the alarm box 12; the transition pipe 9 is movably inserted into the inner side of the alarm box 12, and an upper pressure plate 15 and a lower pressure plate 16 are screwed on the threaded groove 10, and the upper pressure plate 15 is pressed tightly against the inner bottom surface of the power distribution cabinet 11; the lower pressure plate 16 is pressed tightly against the inner top surface of the power distribution cabinet 11; the upper pressure plate 15 and the lower pressure plate 16 cooperate to tightly install the alarm box 12 against the power distribution cabinet 11;

[0036] A sound and light alarm 17, wherein a plurality of the sound and light alarms 17 are provided and fixed to the outer top surface of the alarm box 12;

[0037] The detection unit includes a detection tube warehouse 18, which is fixed inside the alarm box 12; a gas transmitter 19 and an induced draft fan 20 are arranged inside the detection tube warehouse 18; one end of the detection tube warehouse 18 is connected to the top of the transition pipe 9 through a bend pipe 21, and the other end is connected to the outside of the alarm box 12;

[0038] The fire extinguishing gas unit includes a conduit 22 integrally formed on a curved pipe 21; a stamping pipe 23 is provided inside the conduit 22 through a sealing ring; the bottom of the stamping pipe 23 is screwed to the threaded hole of the inclined pipe 8; the upper part of the stamping pipe 23 is connected to the gas tank 25 outside the alarm box 12 through a second electric control valve 24;

[0039] An alarm monitoring unit is provided on the cover 13 .

[0040] The monitoring terminal sends the monitoring data to the control unit 14 in real time. When the monitoring data reaches the first threshold line, the gas transmitter 19 and the induced draft fan 20 are triggered to act. When the monitoring data reaches the second threshold line, the sound and light alarm 17 starts to alarm. When the monitoring data reaches the third threshold line, or the time value from the second threshold line to the third threshold line is lower than the set line, the sound and light alarm 17 keeps the alarm, and the fire extinguishing gas unit directly performs the fire extinguishing operation. In the early stage of the risk, it can be detected in time to eliminate the high risk.

[0041] When the gas transmitter 19 and the induced draft fan 20 are in operation, the control unit 14 first determines which monitoring terminal has collected data exceeding the first threshold line, and opens the corresponding first electrically controlled valve 3. The induced draft fan 20 is turned on, and the induced draft fan 20 extracts the gas around the corresponding functional unit in the distribution cabinet 11 through the filter cover 6, and enters the detection tube warehouse 18 through the telescopic tube 5, the tee 4, the first electrically controlled valve 3, the first tube body 2, the transition pipe 9 and the elbow 21 in turn. The gas is detected by the gas transmitter 19 in the detection tube warehouse 18 to determine whether the gas contains high-risk components or whether a certain high-risk component exceeds the set value; when it is determined that there are no high-risk components in the gas or a certain high-risk component does not exceed the set value, no action is performed; when it is determined that there are high-risk components in the gas or a certain high-risk component exceeds the set value; the sound and light alarm 17 starts the alarm, and the fire extinguishing gas unit directly performs the fire extinguishing operation;

[0042] When the fire extinguishing gas unit is in operation, the second electrically controlled valve 24 is opened, and the high-pressure gas in the gas tank 25 is pumped into the second tube body 7 through the second electrically controlled valve 24, the stamping tube 23 and the inclined tube 8, and the high-pressure gas is distributed through the second tube body 7, and the high-pressure gas is sent to each functional unit in the distribution cabinet through the connecting pipe, the tee 4, the telescopic tube 5 and the filter cover 6; the high-pressure fire extinguishing gas can perform high-pressure fire extinguishing on the functional unit where the fault occurs, and at the same time can defensively spray high-pressure fire extinguishing gas on other functional units, and can directly perform fire extinguishing operations.

[0043] It also includes an electric switch connected in series to the control circuit of the distribution cabinet circuit breaker, and the control end of the electric switch is connected to the control unit 14; the control unit 14 can control the opening and closing of the electric switch, thereby controlling the on and off of the control circuit of the distribution cabinet circuit breaker, thereby controlling the on and off of the distribution cabinet circuit breaker; realizing power-on and power-off operations.

[0044] It includes a plurality of pipe hoops 26 fixed to the front end of the cover 13, and a tooth ring is provided inside the pipe hoops 26; a pipe seat 27 is inserted inside the tooth ring, and a tooth groove engaged with the tooth ring is provided outside the pipe seat 27; a straight groove 28 is axially provided on the pipe seat 27, and a plurality of infrared probes 29 are installed in the straight groove 28 at intervals; a pyroelectric sensor 30 is installed at the front end of the pipe hoop 26; a snap ring 31 is integrally formed on the outer side of the middle part of the pipe seat 27; a hinge seat is fixed to the front end of the cover 13, and a clamping seat 32 is hinged on the hinge seat, and the clamping seat 32 is movably engaged with the clamping ring 31; an edge plate 33 is integrally formed at the bottom of the cover 13, and a plurality of proximity switches 34 are embedded on the edge plate 33, and the bottom of the proximity switch 34 A detection plate 35 is arranged opposite, and the detection plate 35 is fixed to the top of the door body of the power distribution cabinet 11; when in use, a safety monitoring surface is established on the front side of the power distribution cabinet, and the establishment process is as follows: first, flip up the clamping seat 32 to disengage the clamping seat 32 from the clamping ring 31, then slide the pipe seat 27 to separate the tooth groove of the pipe seat 27 from the tooth ring of the pipe clamp 26, then rotate the pipe seat 27, and adjust the monitoring surface of the infrared probe 29 on the pipe seat 27 so that when the operator enters the front of the power distribution cabinet, no alarm is issued; when the hand approaches the door body of the power distribution cabinet 11, the hand enters the safety monitoring surface, and an alarm is issued at this time; after completing the angle adjustment of the pipe seat 27, re-engage the tooth groove of the pipe seat 27 with the tooth ring of the pipe clamp 26, then flip down the clamping seat 32, so that The holder 32 and the clamp ring 31 are movably engaged to complete the locking of the tube holder 27. When in use, the infrared probe 29 is in silent mode; when an operator enters the front of the distribution cabinet and is detected by the pyroelectric sensor 30, the infrared probe 29 is turned on the detection mode again, and when the operator leaves the distribution cabinet, the infrared probe 29 re-enters the silent mode; when the monitoring terminal monitors the current and the infrared probe 29 detects that the operator is approaching the door of the distribution cabinet 11, the sound and light alarm 17 continues to flash the light alarm and the voice alarm with power on. When the operator swings his hand from one end of the tube holder 27 to the other end for a set number of times within the set time, the sound and light alarm 17 sends out whether the power is off. When the hand swings the tube holder 27 in the opposite direction for a set number of times After that, the control unit 14 controls the power-off operation; when the door of the distribution cabinet 11 is forced to open, the proximity switch 34 on the plate 33 is separated from the detection plate 35, and the proximity switch 34 gives a signal to the control unit 14, and the control unit 14 forces the power-off operation to be controlled; when the inspection is completed and power-on debugging is required, the operator swings his hand from one end of the tube socket 27 to the other end for a set number of times within the set time, and the sound and light alarm 17 sends out whether to restore the power. When the hand swings in the opposite direction along the tube socket 27 for a set number of times, the power-on operation is performed; after the inspection is completed, the power can be cut off first and then restored according to the above process; when the door of the distribution cabinet is closed without being cut off, the control unit 14 automatically cuts off the power, and after a delay of a set time, it automatically restores the power.

[0045] The monitoring terminal includes a copper nose 36 connected to the power distribution cabinet terminal, and a thermal conductive potting glue 37 is cast inside the copper nose 36; an insulating head 38 is fixed to the rear end of the copper nose 36; a temperature transmitter 39 is wrapped inside the thermal conductive potting glue 37; a current transformer 40 is fixed to the front end of the monitoring terminal, a compartment is provided inside the insulating head 38, a control board is fixed inside the compartment, and a transceiver antenna 41 connected to the control board is fixed outside the insulating head 38; the thermal conductive potting glue 37 can encapsulate the temperature transmitter 39 and provide structural support; the power distribution cabinet terminal transfers electrical energy and thermal energy to the copper nose 36, and the thermal energy is transferred to the temperature transmitter 39 through the thermal conductive potting glue 37. 9. The real-time collected temperature is transmitted to the control board through the temperature transmitter 39. At the same time, the current transformer 40 transmits the collected current to the control board; and the temperature data and current data processed by the control board are sent to the control unit 14 through the transceiver antenna 41; when the control unit 14 detects that the temperature data or the current data exceeds the first threshold value, the induced draft fan 20 is turned on, and the gas transmitter 19 is used to monitor in real time whether the gas contains marker gases such as acetylene, SF6 and nitrogen oxides. When the detected gas contains marker gases or the content of marker gases exceeds the set value, the second electric control valve 24 is triggered, so that the high-pressure fire extinguishing gas inside the gas tank 25 directly impacts the internal units of the distribution cabinet to protect the internal units.

[0046] A current induction coil 42 is also fixedly sleeved on the copper nose 36; the current induction coil 42 is connected to the control board through the power management circuit; the power management circuit is also connected to the grounding wire 43; when working, the induced current can be obtained through the current induction coil 42, and the induced current is converted into charging electric energy through the power management circuit and sent to the battery; the battery can power the control board through the power management circuit.

[0047] The locking device comprises a pressing frame 44 fixed to the bottom of the mounting plate 1, a rack 45 is arranged inside the pressing frame 44; a plurality of spring bodies 46 are arranged between the rack 45 and the pressing frame 44; the two sides of the front end of the pressing frame 44 are integrally formed with limit blocks 47; bolt bodies 48 are arranged at both ends of the pressing frame 44 to limit the end of the rack 45; a toothed disc 49 engaged with the rack 45 is fixed on the telescopic tube 5; during operation, the position of the filter cover 6 can be adjusted according to the internal unit position of the distribution cabinet 11. During adjustment, the telescopic tube 5 is pulled longitudinally or transversely to make the filter cover 6 reach the internal unit height and close to the internal unit; then, the rack 45 is pushed to pass through the rack 45 The spring body 46 is compressed. At this time, the rack 45 is separated from the toothed disc 49, so that the telescopic tube 5 can rotate along the tee 4, and the filter cover 6 can be opposite to the internal unit, so that the filter cover 6 can be adjusted in the direction, horizontal direction and height direction to make the filter cover 6 close to the internal unit; after the adjustment is completed, the rack 45 is loosened, and the spring body 46 pushes the rack 45 to lock the rack 45 and the toothed disc 49, and the tee 4 and the telescopic tube 5 are locked by bolts. After the adjustment is completed, the air suction port of the pipeline unit and the fire extinguishing gas blowing port are opposite to the internal unit; thereby, the accuracy of the air suction detection can be guaranteed, and the fire extinguishing gas can be accurately delivered to the internal unit, so as to achieve efficient fire extinguishing and explosion prevention of the internal unit.

[0048] A power distribution cabinet comprises a power distribution cabinet body 11 and a smart grid power distribution cabinet alarm device installed on the power distribution cabinet body 11.

[0049] The above embodiments are only preferred implementations of the present invention, so any equivalent changes or modifications made according to the structures, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.

Claims

1. A smart power grid distribution cabinet alarm device, characterized in that: include: A monitoring terminal connected to a wiring terminal of a power distribution cabinet; A pipeline unit, the pipeline unit includes a mounting plate, a heat dissipation detection tube group and a fire extinguishing tube group, the heat dissipation detection tube group includes a first tube body, a plurality of first electrically controlled valves are connected to the first tube body, the other end of the first electrically controlled valve is connected to a tee, an L-shaped telescopic tube is rotatably plugged at the bottom of the tee; a filter cover is connected to the bottom of the telescopic tube; a locker is provided at the bottom of the mounting plate to lock the telescopic tube; the fire extinguishing tube group includes a second tube body, a connecting tube connected to the top of the tee is provided at the bottom of the second tube body; the second tube body and the first tube body are connected through an oblique tube; the upper end of the oblique tube is sealed and embedded in the first tube body; the oblique tube is provided with a threaded hole inside the first tube body; a transition tube is connected to the first tube body, and a threaded groove is provided outside the transition tube; An alarm unit, the alarm unit comprises an alarm box arranged on the top of the outer side of the power distribution cabinet; a cover is arranged at the front end of the alarm box, and a control unit for the whole machine control is fixed inside the alarm box; the transition pipe is movably inserted into the inner side of the alarm box, and an upper pressure plate and a lower pressure plate are screwed on the threaded groove, and the upper pressure plate is pressed tightly against the bottom surface of the inner side of the power distribution cabinet; the lower pressure plate is pressed tightly against the top surface of the inner side of the power distribution cabinet; A sound and light alarm, wherein a plurality of the sound and light alarms are provided and fixed to the outer top surface of the alarm box; The detection unit includes a detection tube warehouse, which is fixed inside the alarm box; a gas transmitter and an induced draft fan are arranged inside the detection tube warehouse; one end of the detection tube warehouse is connected to the top of the transition pipe through a bend pipe, and the other end is connected to the outside of the alarm box; The fire extinguishing gas unit comprises a conduit integrally formed on a curved pipe; a stamping pipe is arranged on the inner side of the conduit through a sealing ring; the bottom of the stamping pipe is screwed to the threaded hole of the inclined pipe; the upper part of the stamping pipe is connected to the gas tank outside the alarm box through a second electric control valve; An alarm monitoring unit, wherein the alarm monitoring unit is arranged on the cover; The monitoring terminal sends the monitoring data to the control unit in real time. When the monitoring data reaches the first threshold line, the gas transmitter and the induced draft fan are triggered to operate. When the monitoring data reaches the second threshold line, the sound and light alarm starts to alarm. When the monitoring data reaches the third threshold line, or the time value from the second threshold line to the third threshold line is lower than the set line, the sound and light alarm keeps alarming, and the fire extinguishing gas unit directly performs the fire extinguishing operation. When the gas transmitter and the induced draft fan are in operation, the control unit first determines which monitoring terminal has collected data exceeding the first threshold line, and opens the corresponding first electric control valve. The induced draft fan is turned on, and the induced draft fan extracts the gas around the corresponding functional unit in the distribution cabinet through the filter cover, and enters the detection pipe warehouse through the telescopic pipe, tee, first electric control valve, first pipe body, transition pipe and elbow in turn, and detects the gas through the gas transmitter in the detection pipe warehouse.

2. The smart grid distribution cabinet alarm device according to claim 1 is characterized in that: It also includes an electric switch connected in series to the control loop of the distribution cabinet circuit breaker, and the control end of the electric switch is connected to the control unit.

3. The smart grid distribution cabinet alarm device according to claim 1 is characterized in that: It comprises a plurality of pipe clamps fixed to the front end of the sealing cover, wherein a gear ring is provided on the inner side of the pipe clamp; a pipe seat is inserted on the inner side of the gear ring, and a tooth groove engaging with the gear ring is provided on the outer side of the pipe seat; a straight groove is provided axially on the pipe seat, and a plurality of infrared probes are installed in the straight groove at intervals; a pyroelectric sensor is installed at the front end of the pipe clamp; a clamping ring is integrally formed on the outer side of the middle part of the pipe seat; a hinged seat is fixed to the front end of the sealing cover, a clamping seat is hinged on the hinged seat, and the clamping seat is movably engaged with the clamping ring; an edge plate is integrally formed at the bottom of the sealing cover, a plurality of proximity switches are embedded on the edge plate, a detection plate is arranged opposite to the bottom of the proximity switch, and the detection plate is fixed to the top of the door body of the power distribution cabinet.

4. The smart grid distribution cabinet alarm device according to claim 1 is characterized in that: The monitoring terminal includes a copper nose connected to the wiring terminal of the distribution cabinet, and a thermal conductive potting glue is cast on the inside of the copper nose; an insulating head is fixed to the rear end of the copper nose; a temperature transmitter is wrapped on the inside of the thermal conductive potting glue; a current transformer is fixed to the front end of the monitoring terminal, a partition is provided on the inside of the insulating head, a control board is fixed on the inside of the partition, and a transceiver antenna connected to the control board is fixed on the outside of the insulating head.

5. The smart grid distribution cabinet alarm device according to claim 4 is characterized in that: A current induction coil is also sleeved and fixed on the copper nose; the current induction coil is connected to the control board through a power management circuit; and the power management circuit is also connected to a ground wire.

6. The smart grid distribution cabinet alarm device according to claim 1 is characterized in that: The lock device includes a pressing frame fixed to the bottom of the hanging plate, a rack is arranged on the inner side of the pressing frame; a plurality of spring bodies are arranged between the rack and the pressing frame; limiting blocks are integrally formed on both sides of the front end of the pressing frame; bolt bodies are arranged at both ends of the pressing frame to limit the position of the rack end; a toothed disc engaged with the rack is fixed on the telescopic tube.

7. A power distribution cabinet, characterized in that: It comprises a power distribution cabinet, and a smart grid power distribution cabinet alarm device as described in any one of claims 1 to 6 installed on the power distribution cabinet.

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