A three-phase smart meter with a smoke alarm device

Abstract

The present invention relates to the technical field of smart electric meters, and in particular to a three-phase smart electric meter with a smoke alarm device, comprising an installation cabinet, a cabinet door being arranged at an opening of the installation cabinet, a positioning opening and closing mechanism being connected between the installation cabinet and the cabinet door, a conduction block being fixedly connected to the interior of the installation cabinet, an electric meter body being fixedly mounted on the conduction block, a mounting frame being fixedly connected to the interior of the installation cabinet, and a smoke sensor body being fixedly mounted on the mounting frame; the present invention seals and protects the interior of the installation cabinet through the action of a sealing protection mechanism, and releases the air flow inside the installation cabinet through a circulating air intake mechanism, thereby preventing flames from entering the interior of the installation cabinet to cause burning damage to the electric meter body, and continuously cools the glass plate through an explosion-proof cooling mechanism, thereby reducing the probability of damage to the circuit system and reducing property losses caused by fire.

Description

Technical Field

[0001] The present invention relates to the technical field of smart electric meters, and in particular to a three-phase smart electric meter with a smoke alarm device. Background Art

[0002] The intelligent three-phase ammeter can directly replace conventional power transmitters and measuring instruments. As an advanced intelligent and digital front-end acquisition component, the power meter has been widely used in various control systems, SCADA systems and energy management systems. The meter adopts AC sampling technology and can measure the three-phase current parameters in the power grid.

[0003] The patent document with announcement number CN218003517U discloses a three-phase smart meter with a smoke alarm device, including a smart three-phase ammeter, a data display is provided on the front of the smart three-phase ammeter, mounting racks are installed on both sides of the smart three-phase ammeter, a wiring harness connection port is provided on the front of the smart three-phase ammeter, and a signal controller is installed on the top of the smart three-phase ammeter.

[0004] In the process of using three-phase smart meters with current technology, smoke sensors installed on the three-phase smart meters are usually used to monitor and alarm for fires. In the daily use of the three-phase smart meters, when a fire occurs inside a room and an alarm signal is issued, it takes a certain amount of time for rescue personnel to arrive and extinguish the fire, which can easily cause the three-phase smart meters to burn out in the fire scene, thereby damaging the circuit system and causing greater losses. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the above-mentioned technology and to propose a three-phase smart meter with a smoke alarm device.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a three-phase smart meter with a smoke alarm device, comprising an installation cabinet, a cabinet door is arranged at the opening of the installation cabinet, a positioning opening and closing mechanism is connected between the installation cabinet and the cabinet door, a conductive block is fixedly connected inside the installation cabinet, and an electric meter body is fixedly installed on the conductive block;

[0007] A mounting frame is fixedly connected inside the mounting cabinet, a smoke sensor body is fixedly mounted on the mounting frame, a circulating air intake mechanism and a sealing protection mechanism are connected to the mounting cabinet, a rectangular groove is opened on the cabinet door, two glass plates are fixedly mounted inside the rectangular groove, there is a gap between the two glass plates, and an explosion-proof cooling mechanism is connected between the two glass plates.

[0008] Preferably, the positioning opening and closing mechanism includes a connecting strip and two limiting rings, the connecting strip is fixedly connected to one side of the cabinet door, a rotating column is fixedly inserted inside the connecting strip, the two limiting rings are fixedly connected to one side of the installation cabinet, the two ends of the rotating column are respectively rotatably connected to the inside of the two limiting rings, a lock core is fixedly installed on the cabinet door, one end of the lock core close to the installation cabinet is fixedly connected to the positioning strip, one side inside the installation cabinet is fixedly connected to a limiting baffle, and a pull ring is fixedly connected to the installation cabinet.

[0009] Preferably, the explosion-proof cooling mechanism comprises a fixed block and a water inlet pipe, the fixed block is fixedly connected to one side of the cabinet door, an L-shaped connecting hole is provided inside the fixed block, the water inlet pipe is fixedly connected to one side of the installation cabinet, one end of the water inlet pipe is rotatably connected to the inside of the L-shaped connecting hole, the rotating connection between the water inlet pipe and the L-shaped connecting hole is coaxially arranged with the rotating column, a water inlet hole is provided on one side of the cabinet door, one end of the water inlet hole is connected to the upper side of one side of the rectangular groove, and the other end of the water inlet hole is connected to the L-shaped connecting hole, a drainage hole is provided at the bottom of the cabinet door, one end of the drainage hole is connected to the bottom of the rectangular groove, and the A drain pipe is fixedly installed at the bottom of the cabinet door, a first electrically-controlled valve is fixedly installed on the drain pipe, the drain pipe is connected to the other end of the drain hole, one end of the water inlet hole and one end of the drain hole are both located between the two glass plates, a shielding shell is fixedly connected to the side of the cabinet door away from the installation cabinet, a connecting pipe is fixedly connected to the inside of the shielding shell, the connecting pipe is located above the glass plate, and one end of the connecting pipe is fixedly connected to the water inlet pipe, a second electrically-controlled valve is fixedly installed on the connecting pipe, a plurality of inclined tubes are fixedly connected to the bottom of the connecting pipe, the bottom ends of the inclined tubes are all inclined toward the cabinet door and are fixedly connected to a straight-line nozzle.

[0010] Preferably, the circulating air intake mechanism includes an air intake groove and an exhaust groove, and the air intake groove and the exhaust groove are respectively opened on both sides of the installation cabinet, and a first exhaust fan is fixedly installed on the side of the installation cabinet, and the exhaust groove is located between the first exhaust fan and the smoke sensor body.

[0011] Preferably, the sealing protection mechanism includes a first sliding frame and a second sliding frame, the first sliding frame and the second sliding frame are respectively fixedly connected to both sides of the interior of the installation cabinet, the first sliding frame and the second sliding frame are respectively slidably connected with a first sealing plate and a second sealing plate, the first sealing plate and the second sealing plate are respectively located at the top of one side of the air inlet groove and the exhaust groove, the interior of the installation cabinet is slidably connected with a U-shaped bracket, the two ends of the U-shaped bracket are respectively fixedly connected to the first sealing plate and the second sealing plate, a hydraulic cylinder is fixedly installed inside the installation cabinet, and the piston shaft of the hydraulic cylinder is fixedly connected to the U-shaped bracket.

[0012] Preferably, an annular rubber strip is provided on one side of the two glass plates which are away from each other, and the annular rubber strip is fixedly bonded to the junction between the rectangular groove and the corresponding side of the glass plate.

[0013] Preferably, a dust filter is fixedly connected to the interior of the air inlet groove.

[0014] Preferably, the bottom of the water inlet pipe is fixedly connected with an L-shaped pipe, one end of the L-shaped pipe passes through the installation cabinet and extends to the interior of the installation cabinet and is fixedly connected with a cooling pipe, the cooling pipe is fixedly inserted on the conduction block in a reciprocating bending shape, one end of the cooling pipe passes through the installation cabinet and extends to the outside of the installation cabinet, and a matching connecting mechanism is connected to the L-shaped pipe.

[0015] Preferably, the mating connecting mechanism includes a circular rod, which is fixedly connected to the U-shaped bracket and slidably inserted on one end of the L-shaped tube located inside the installation cabinet. A circular through hole is opened on the circular rod, and a sealing ring is fixedly connected to the L-shaped tube. The sealing ring is slidably sleeved on the circular rod and located at the top of the sliding connection between the L-shaped tube and the circular rod.

[0016] Preferably, a through slot is provided inside the conduction block, the fixed connection between the cooling pipe and the conduction block is connected to the through slot, and a second exhaust fan is fixedly installed at the bottom of the conduction block, and the second exhaust fan is located at the bottom of the through slot.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The inside of the installation cabinet is sealed and protected by the sealing protection mechanism, and the air flow inside the installation cabinet is released by the circulation air intake mechanism, thereby preventing the flame from entering the installation cabinet and causing burn damage to the meter body, and the glass plate is continuously cooled by the explosion-proof cooling mechanism to prevent the glass plate from shattering under the high temperature of the fire, thereby improving the sealing protection of the meter body during a fire, reducing the probability of damage to the circuit system, and reducing the property loss caused by the fire.

[0019] 2. When the smoke concentration sends a critical value signal, the controller connected to the smoke sensor body receives the critical value data and opens the first electric control valve switch, so that the cooling water is discharged along the drain pipe. At the same time, the cooling water source is continuously replenished along the water inlet pipe into the rectangular groove between the two glass plates, and the glass plates are continuously cooled to prevent the glass plates from breaking under the thermal stress generated by high temperature when a fire occurs, reduce the open flame generated during the fire through the rectangular groove to burn the meter body, and improve the protection effect of the meter body in the event of a fire.

[0020] 3. The meter body is cooled by air flow through the air inlet slot and the exhaust slot to reduce overheating during the operation of the meter body. When a fire occurs outside the installation cabinet, the external air and the smoke generated by the fire enter the installation cabinet through the air inlet slot and are discharged along the exhaust slot. The smoke in the flowing air is monitored by the smoke sensor body, so as to detect the fire in time.

[0021] 4. By fixing the cooling pipe and the conduction block, the cooling water inside the cooling pipe can carry away the heat on the conduction block by contacting the heat conduction during the flow process, so that the main body of the electric meter fixedly installed on the conduction block is continuously cooled down, reducing the temperature increase of the main body of the electric meter caused by the sealing of the installation cabinet and the contact between the open flame and the installation cabinet, ensuring that the main body of the electric meter can work normally. The cooling water inside the cooling pipe flows out along one end outside the installation cabinet after contacting the conduction block for heat conduction, and is fixedly inserted on the conduction block in a reciprocating bending shape through the cooling pipe, thereby increasing the contact area between the cooling pipe and the conduction block and improving the contact heat conduction effect of the cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a first structural schematic diagram of the present invention;

[0023] Figure 2 For the present invention Figure 1 A schematic diagram of the structure enlargement at point A;

[0024] Figure 3 It is a second structural schematic diagram of the present invention;

[0025] Figure 4 It is a schematic diagram of the installation cabinet and the cabinet door unfolding structure from a first perspective of the present invention;

[0026] Figure 5 For the present invention Figure 4 A schematic diagram of the structure at B in FIG.

[0027] Figure 6 For the present invention Figure 4 A schematic diagram of the structure at position C in FIG.

[0028] Figure 7 It is a schematic diagram of the installation cabinet and the cabinet door unfolding structure of the present invention from a second viewing angle;

[0029] Figure 8 For the present invention Figure 7 A schematic diagram of the structure at D in FIG.

[0030] Fig. 9 This is a schematic diagram of the matching structure of the cabinet door and the fixing block of the present invention (the fixing block and part of the cabinet door are cut away);

[0031] Fig.10 For the present invention Fig. 9 A schematic diagram of the structure at position E in FIG.

[0032] Fig.11 For the present invention Fig. 9 A magnified schematic diagram of the structure at F in FIG.

[0033] Fig.12 It is a cross-sectional schematic diagram of the matching structure of the cabinet door and the glass plate of the present invention;

[0034] Fig.13 For the present invention Fig.12 A schematic diagram of the structure at G in FIG.

[0035] Fig.14 It is a schematic diagram of the coordination structure of the conduction block and the cooling pipe of the present invention (the conduction block is cut);

[0036] Fig.15 For the present invention Fig.14 A schematic diagram of the structure at position H in FIG.

[0037] Fig.16 It is a schematic diagram of the matching structure of the shielding shell and the connecting pipe in the present invention;

[0038] Fig.17 For the present invention Fig.16 Schematic diagram of the enlarged structure at position I in FIG.

[0039] In the figure: 1. installation cabinet; 2. cabinet door; 3. conduction block; 4. electric meter body; 5. mounting frame; 6. smoke sensor body; 7. rectangular groove; 8. glass plate; 9. connecting strip; 10. limit ring; 11. rotating column; 12. lock core; 13. positioning strip; 14. limit baffle; 15. pull ring; 16. fixing block; 17. water inlet pipe; 18. L-shaped connecting hole; 19. water inlet hole; 20. drainage hole; 21. drainage pipe; 22. first electric control valve; 23. air inlet groove; 24. exhaust groove; 2 5. The first row of fans; 26. The first sliding frame; 27. The second sliding frame; 28. The first sealing plate; 29. ​​The second sealing plate; 30. The U-shaped bracket; 31. The hydraulic cylinder; 32. The annular rubber strip; 33. The dust filter; 34. The L-shaped pipe; 35. The cooling pipe; 36. The round rod; 37. The round through hole; 38. The sealing retaining ring; 39. The through groove; 40. The second row of fans; 41. The shielding shell; 42. The connecting pipe; 43. The second electric control valve; 44. The tilting pipe; 45. The straight nozzle. DETAILED DESCRIPTION

[0040] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0041] like Figures 1 to 17 A three-phase smart electric meter with a smoke alarm device shown in the figure comprises an installation cabinet 1, a cabinet door 2 is arranged at the opening of the installation cabinet 1, a positioning opening and closing mechanism is connected between the installation cabinet 1 and the cabinet door 2, a conductive block 3 is fixedly connected inside the installation cabinet 1, and an electric meter body 4 is fixedly installed on the conductive block 3;

[0042] The interior of the installation cabinet 1 is fixedly connected with a mounting frame 5 (such as Figure 8As shown in the figure, a smoke sensor body 6 is fixedly installed on the mounting frame 5, a circulating air intake mechanism and a sealing protection mechanism are connected to the mounting cabinet 1, a rectangular groove 7 is opened on the cabinet door 2, and two glass plates 8 are fixedly installed inside the rectangular groove 7, there is a gap between the two glass plates 8, and an explosion-proof cooling mechanism is connected between the two glass plates 8; when working, in the process of using the three-phase smart meter in the current technology, the smoke sensor installed on the three-phase smart meter is usually used to monitor the fire and alarm. In the daily use of the three-phase smart meter, when a fire occurs inside the room and an alarm signal is issued, it takes a certain amount of time for the rescue personnel to arrive and extinguish the fire, which can easily cause the three-phase smart meter to burn out in the fire scene, thereby damaging the circuit system and causing greater losses; the technical solution can solve the above problems, and the specific working method is as follows: when the meter body 4 is working inside the mounting cabinet 1, the cabinet door 2 is positioned at the opening of the mounting cabinet 1 through the positioning opening and closing mechanism, and can pass through the two layers of glass on the rectangular groove 7 The plate 8 observes the working status of the meter body 4. When a fire occurs indoors and a large amount of smoke is generated, part of the smoke enters the interior of the installation cabinet 1 through the circulation air intake mechanism, and the smoke inside the installation cabinet 1 is monitored by the smoke sensor body 6. When the smoke concentration reaches the critical value monitored by the smoke sensor body 6, the controller connected to the smoke sensor body 6 receives the critical value data and sends out an alarm signal. At the same time, the controller connected to the smoke sensor body 6 controls the sealing protection mechanism and the explosion-proof cooling mechanism to work, and the interior of the installation cabinet 1 is sealed and protected by the sealing protection mechanism, and the air flow inside the installation cabinet 1 by the circulation air intake mechanism is released, thereby preventing the flame from entering the installation cabinet 1 and causing burning damage to the meter body 4, and the explosion-proof cooling mechanism is used to continuously cool the glass plate 8 to prevent the glass plate 8 from shattering under the action of the high temperature of the fire, thereby improving the sealing protection of the meter body 4 during a fire, reducing the probability of damage to the circuit system, and reducing the property loss caused by the fire.

[0043] As a further embodiment of the present invention, the positioning opening and closing mechanism includes a connecting strip 9 and two limiting rings 10, the connecting strip 9 is fixedly connected to one side of the cabinet door 2, a rotating column 11 is fixedly inserted inside the connecting strip 9, the two limiting rings 10 are fixedly connected to one side of the installation cabinet 1, and the two ends of the rotating column 11 are respectively rotatably connected to the inside of the two limiting rings 10, a lock core 12 is fixedly installed on the cabinet door 2, and a positioning strip 13 (such as Figure 6 As shown, a limit stopper 14 (as shown) is fixedly connected to one side of the interior of the installation cabinet 1. Figure 7As shown in the figure, a pull ring 15 is fixedly connected to the installation cabinet 1; when working, the limit baffle 14 blocks one end of the positioning strip 13, so that the cabinet door 2 is positioned at the opening of the installation cabinet 1. After the lock cylinder 12 is unlocked, one end of the positioning strip 13 is detached from one side of the limit baffle 14, thereby releasing the positioning of the cabinet door 2, and then by pulling the pull ring 15, the rotating column 11 on one side of the cabinet door 2 is rotated along the rotating connection of the limit ring 10, so that the cabinet door 2 is rotated along the axis of the rotating column 11 to open.

[0044] As a further embodiment of the present invention, the explosion-proof cooling mechanism includes a fixing block 16 and a water inlet pipe 17. The fixing block 16 is fixedly connected to one side of the cabinet door 2 (such as Fig.10 As shown in the figure, an L-shaped connecting hole 18 is provided inside the fixing block 16, a water inlet pipe 17 is fixedly connected to one side of the installation cabinet 1, one end of the water inlet pipe 17 is rotatably connected to the inside of the L-shaped connecting hole 18, and the rotating connection point between the water inlet pipe 17 and the L-shaped connecting hole 18 is coaxially arranged with the rotating column 11, a water inlet hole 19 is provided on one side of the cabinet door 2, one end of the water inlet hole 19 is connected to the upper side of one side of the rectangular groove 7, and the other end of the water inlet hole 19 is connected to the L-shaped connecting hole 18, and a drainage hole 20 is provided at the bottom of the cabinet door 2 (as shown in the figure). Fig.11As shown in the figure, one end of the drain hole 20 is connected to the bottom of the rectangular groove 7, a drain pipe 21 is fixedly installed at the bottom of the cabinet door 2, a first electric control valve 22 is fixedly installed on the drain pipe 21, the drain pipe 21 is connected to the other end of the drain hole 20, one end of the water inlet hole 19 and one end of the drain hole 20 are both located between the two glass plates 8, a shielding shell 41 is fixedly connected to the side of the cabinet door 2 away from the installation cabinet 1, a connecting pipe 42 is fixedly connected to the inside of the shielding shell 41, the connecting pipe 42 is located above the glass plate 8, and one end of the connecting pipe 42 is fixedly connected to the water inlet pipe 17, a second electric control valve 43 is fixedly installed on the connecting pipe 42, and the bottom of the connecting pipe 42 is fixedly connected to the water inlet pipe 17. There are a plurality of inclined tubes 44, the bottom ends of which are all inclined toward the cabinet door 2 and are fixedly connected to a straight-line nozzle 45; when working, a cooling water source is connected at one end of the water inlet pipe 17, and the cooling water enters the L-shaped connecting hole 18 along the connecting portion between the water inlet pipe 17 and the L-shaped connecting hole 18, and then continues to flow along the connecting portion between the L-shaped connecting hole 18 and the water inlet hole 19, so that the cooling water is filled between the two glass plates 8 along the connecting portion between the water inlet hole 19 and the rectangular groove 7, and the outlet of the drain pipe 21 is blocked by the first electric control valve 22 on the drain pipe 21 to prevent the cooling water from flowing out. When the smoke concentration sends a critical value signal, the controller connected to the smoke sensor body 6 receives the signal. The critical value data is set and the first electric control valve 22 is turned on, so that the cooling water is discharged along the drain pipe 21. At the same time, the cooling water source is continuously replenished into the rectangular groove 7 between the two glass plates 8 along the water inlet pipe 17, and the glass plates 8 are continuously cooled down. At the same time, the controller connected to the smoke sensor body 6 opens the second electric control valve 43, so that part of the cooling water in the water inlet pipe 17 enters the inside of the connecting pipe 42, and is discharged along the bottom ends of the multiple inclined pipes 44, and the spraying area is expanded through the straight nozzle 45, so that the cooling water is directly sprayed on the side surface of the corresponding glass plate 8 in contact with the outside world, and flows downward along the surface of the glass plate 8, so that the cabinet door Both sides of the glass plate 8 close to the outside can be cooled effectively, and the temperature difference between the two sides of the glass can be reduced while cooling, so as to prevent the glass plate 8 from being broken under the thermal stress generated by high temperature when a fire occurs, and reduce the open flame generated during a fire from burning the meter body 4 through the rectangular groove 7, thereby improving the protection effect of the meter body 4 when a fire occurs. When the cabinet door 2 is opened daily, the rotating connection point of the water inlet pipe 17 and the L-shaped connecting hole 18 is coaxially arranged with the rotating column 11, so that when the fixed block 16 rotates synchronously with the cabinet door 2, one end of the water inlet pipe 17 rotates inside the L-shaped connecting hole 18 and always keeps in communication, thereby reducing the influence of the opening and closing of the cabinet door 2 on the connection of the cooling water.

[0045] As a further embodiment of the present invention, the circulating air intake mechanism includes an air intake groove 23 and an exhaust groove 24 (combined with Figure 2 and Figure 8), the air inlet groove 23 and the exhaust groove 24 are respectively opened on both sides of the installation cabinet 1, and the first exhaust fan 25 is fixedly installed on the side of the installation cabinet 1, and the exhaust groove 24 is located between the first exhaust fan 25 and the smoke sensor body 6; when working, the first exhaust fan 25 works to generate negative pressure inside the installation cabinet 1, so that the air inside the installation cabinet 1 is discharged along the exhaust groove 24, and at the same time, the external air is continuously replenished into the installation cabinet 1 along the air inlet groove 23, so that in the daily working state of the installation cabinet 1, the air flow of the air inlet groove 23 and the exhaust groove 24 is used to cool the electric meter body 4, thereby reducing the overheating phenomenon generated during the operation of the electric meter body 4. When a fire occurs outside the installation cabinet 1, the external air and the smoke generated by the fire enter the interior of the installation cabinet 1 along the air inlet groove 23, and in the process of being discharged along the exhaust groove 24, the smoke in the flowing air is monitored by the smoke sensor body 6, so as to detect the fire in time.

[0046] As a further embodiment of the present invention, the sealing protection mechanism includes a first sliding frame 26 and a second sliding frame 27 (combined with Figure 5 and Figure 8 ), the first sliding frame 26 and the second sliding frame 27 are respectively fixedly connected to the two sides of the installation cabinet 1, the first sliding frame 26 and the second sliding frame 27 are respectively slidably connected to the first sealing plate 28 and the second sealing plate 29, the first sealing plate 28 and the second sealing plate 29 are respectively located at the top of one side of the air inlet groove 23 and the exhaust groove 24, the interior of the installation cabinet 1 is slidably connected to a U-shaped bracket 30, the two ends of the U-shaped bracket 30 are respectively fixedly connected to the first sealing plate 28 and the second sealing plate 29, the interior of the installation cabinet 1 is fixedly installed with a hydraulic cylinder 31, and the piston shaft of the hydraulic cylinder 31 is fixedly connected to the U-shaped bracket 30 During operation, when the smoke concentration sends a critical value signal, the controller connected to the smoke sensor body 6 receives the critical value data and drives the hydraulic cylinder 31 to work, and the piston shaft of the hydraulic cylinder 31 drives the U-shaped bracket 30 to move downward, so that the first sealing plate 28 and the second sealing plate 29 move downward vertically along the inside of the first sliding frame 26 and the second sliding frame 27 respectively, and respectively block and seal the air inlet groove 23 and the exhaust groove 24, thereby blocking the connection between the installation cabinet 1 and the outside, preventing open flames from entering the interior of the installation cabinet 1 along the air inlet groove 23 and the exhaust groove 24, and enhancing the protection effect when a fire occurs in the meter body 4.

[0047] As a further embodiment of the present invention, the two glass plates 8 are both provided with an annular rubber strip 32 (such as Figure 6 and Fig.13As shown in the figure, the annular rubber strip 32 is fixedly bonded to the intersection of the rectangular groove 7 and the corresponding glass plate 8 on one side; when working, the annular rubber strip 32 is bonded to the intersection of the glass plate 8 and the rectangular groove 7 to improve the sealing degree between the glass plate 8 and the rectangular groove 7, so that when water is stored in the rectangular groove 7 between the two glass plates 8, the sealing of the water storage can be improved to prevent the cooling water from leaking from the intersection of the glass plate 8 and the rectangular groove 7.

[0048] As a further implementation scheme of the present invention, a dust filter 33 is fixedly connected to the interior of the air inlet groove 23; during operation, by installing the dust filter 33 in the air inlet groove 23, the dust carried by the air inlet groove 23 during the daily air intake process is filtered and intercepted, thereby improving the cleanliness of the interior of the installation cabinet 1.

[0049] As a further embodiment of the present invention, the bottom of the water inlet pipe 17 is fixedly connected to an L-shaped pipe 34 (such as Figure 1 and Figure 5 As shown, one end of the L-shaped tube 34 passes through the installation cabinet 1 and extends to the interior of the installation cabinet 1 and is fixedly connected to a cooling tube 35, which is fixedly inserted on the conductive block 3 in a reciprocating bending shape (as shown in FIG. Fig.14 As shown in the figure, one end of the cooling pipe 35 passes through the installation cabinet 1 and extends to the outside of the installation cabinet 1, and a matching connecting mechanism is connected to the L-shaped pipe 34; when working, the first sealing plate 28 and the second sealing plate 29 respectively block and seal the air inlet groove 23 and the air exhaust groove 24, and the cooling water inside the water inlet pipe 17 enters the cooling pipe 35 along the L-shaped pipe 34 (the specific principle will be explained later), and flows along the inside of the cooling pipe 35. During the flow process, the cooling water inside the cooling pipe 35 is fixedly inserted into the conduction block 3, so that the cooling water inside the cooling pipe 35 is in the process of flowing. The heat on the conduction block 3 is taken away by contact heat conduction, so that the meter body 4 fixedly installed on the conduction block 3 is continuously cooled down, thereby reducing the temperature increase of the meter body 4 caused by the sealing of the installation cabinet 1 and the contact between the open flame and the installation cabinet 1, and ensuring that the meter body 4 can work normally. The cooling water inside the cooling pipe 35 flows out along one end outside the installation cabinet 1 after contact heat conduction with the conduction block 3, and is fixedly inserted on the conduction block 3 in a reciprocating bending shape through the cooling pipe 35, thereby increasing the contact area between the cooling pipe 35 and the conduction block 3, and improving the contact heat conduction effect of the cooling water.

[0050] As a further embodiment of the present invention, the matching connecting mechanism includes a circular rod 36, which is fixedly connected to the U-shaped bracket 30 and slidably inserted on one end of the L-shaped tube 34 located inside the installation cabinet 1. A circular through hole 37 is opened on the circular rod 36, and a sealing ring 38 is fixedly connected to the L-shaped tube 34. The sealing ring 38 is slidably sleeved on the circular rod 36 and is located at the top of the sliding connection between the L-shaped tube 34 and the circular rod 36; when working, the circular rod 36 is slidably inserted on the L-shaped tube 34, so that the inside of the L-shaped tube 34 is blocked by the circular rod 36, and To prevent cooling water from flowing into the cooling pipe 35 along the L-shaped tube 34, when the U-shaped bracket 30 moves downward and seals the interior of the installation cabinet 1, the circular rod 36 moves synchronously with the U-shaped bracket 30, and when the first sealing plate 28 and the second sealing plate 29 respectively block and seal the air inlet groove 23 and the exhaust groove 24, the circular through hole 37 on the circular rod 36 moves to the interior of the L-shaped tube 34 and is connected to the interior of the L-shaped tube 34, so that cooling water flows into the cooling pipe 35 through the circular through hole 37, thereby sealing the interior of the installation cabinet 1 and cooling the meter body 4.

[0051] As a further embodiment of the present invention, a through slot 39 (such as Fig.15 As shown, the fixed connection of the cooling pipe 35 and the conducting block 3 is connected to the through slot 39, and a second exhaust fan 40 (as shown) is fixedly installed at the bottom of the conducting block 3. Fig.14 As shown in the figure, the second exhaust fan 40 is located at the bottom of the through slot 39; when working, when the smoke concentration sends a critical value signal, the controller connected to the smoke sensor body 6 receives the critical value data and drives the second exhaust fan 40 to work, so that after the interior of the installation cabinet 1 is sealed, the second exhaust fan 40 works and generates a negative pressure inside the through slot 39, so that the air inside the installation cabinet 1 enters the through slot 39 along the top of the through slot 39 and is discharged along the bottom of the through slot 39, so that the air in the installation cabinet 1 circulates internally and accelerates the air flow. When passing through the through slot 39, the air in the installation cabinet 1 passes through the fixed connection between the cooling pipe 35 and the conduction block 3, and contacts the surface of the cooling pipe 35 during the flow, thereby contacting and conducting heat to the air in the installation cabinet 1, reducing the air temperature inside the installation cabinet 1, and further reducing the impact of high temperature on the operation of the electric meter body 4.

[0052] Working principle of the present invention:

[0053] When the electric meter body 4 is working inside the installation cabinet 1, the cabinet door 2 is positioned at the opening of the installation cabinet 1 through the action of the positioning opening and closing mechanism, and the working state of the electric meter body 4 can be observed through the two layers of glass plates 8 on the rectangular groove 7. When a fire occurs indoors and a large amount of smoke is generated, part of the smoke enters the interior of the installation cabinet 1 through the action of the circulating air intake mechanism, and the smoke inside the installation cabinet 1 is monitored by the smoke sensor body 6. When the smoke concentration reaches the critical value monitored by the smoke sensor body 6, the controller connected to the smoke sensor body 6 receives the critical value data and sends an alarm signal. At the same time, the controller connected to the smoke sensor body 6 controls the sealing protection mechanism and the explosion-proof cooling mechanism to work, and the interior of the installation cabinet 1 is sealed and protected through the action of the sealing protection mechanism, and the air flow of the circulating air intake mechanism to the interior of the installation cabinet 1 is released, thereby preventing the flame from entering the interior of the installation cabinet 1 to cause burning damage to the electric meter body 4, and the glass plate 8 is continuously cooled by the explosion-proof cooling mechanism to prevent the glass plate 8 from shattering under the action of the high temperature of the fire, thereby improving the sealing protection of the electric meter body 4 during a fire, reducing the probability of damage to the circuit system, and reducing the property loss caused by the fire.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected, and the scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A three-phase smart electric meter with a smoke alarm device, comprising an installation cabinet (1), characterized in that: A cabinet door (2) is provided at the opening of the installation cabinet (1), a positioning opening and closing mechanism is connected between the installation cabinet (1) and the cabinet door (2), a conductive block (3) is fixedly connected inside the installation cabinet (1), and an electric meter body (4) is fixedly mounted on the conductive block (3); The installation cabinet (1) is fixedly connected to a mounting frame (5), a smoke sensor body (6) is fixedly mounted on the mounting frame (5), an air circulation mechanism and a sealing protection mechanism are connected to the installation cabinet (1), a rectangular groove (7) is provided on the cabinet door (2), two glass plates (8) are fixedly mounted inside the rectangular groove (7), a gap is provided between the two glass plates (8), and an explosion-proof cooling mechanism is connected between the two glass plates (8); The positioning opening and closing mechanism comprises a connecting strip (9) and two limiting rings (10); the connecting strip (9) is fixedly connected to one side of the cabinet door (2); a rotating column (11) is fixedly inserted inside the connecting strip (9); the two limiting rings (10) are fixedly connected to one side of the installation cabinet (1); the two ends of the rotating column (11) are respectively rotatably connected to the inside of the two limiting rings (10); a lock core (12) is fixedly installed on the cabinet door (2); one end of the lock core (12) close to the installation cabinet (1) is fixedly connected to a positioning strip (13); one side of the interior of the installation cabinet (1) is fixedly connected to a limiting baffle (14); and a pull ring (15) is fixedly connected to the installation cabinet (1); The explosion-proof cooling mechanism comprises a fixed block (16) and a water inlet pipe (17); the fixed block (16) is fixedly connected to one side of the cabinet door (2); an L-shaped connecting hole (18) is provided inside the fixed block (16); the water inlet pipe (17) is fixedly connected to one side of the installation cabinet (1); one end of the water inlet pipe (17) is rotatably connected to the inside of the L-shaped connecting hole (18); a rotatably connected portion between the water inlet pipe (17) and the L-shaped connecting hole (18) is coaxially arranged with the rotating column (11); a water inlet hole (19) is provided on one side of the cabinet door (2); one end of the water inlet hole (19) is connected to the upper side of one side of the rectangular groove (7); the other end of the water inlet hole (19) is connected to the L-shaped connecting hole (18); a drainage hole (20) is provided at the bottom of the cabinet door (2); one end of the drainage hole (20) is connected to the bottom of the rectangular groove (7); the cabinet door (2) is provided with a drainage hole (20) A drainage pipe (21) is fixedly installed at the bottom, a first electric control valve (22) is fixedly installed on the drainage pipe (21), the drainage pipe (21) is connected to the other end of the drainage hole (20), one end of the water inlet hole (19) and one end of the drainage hole (20) are both located between the two glass plates (8); a shielding shell (41) is fixedly connected to the side of the cabinet door (2) away from the installation cabinet (1), a connecting pipe (42) is fixedly connected inside the shielding shell (41), the connecting pipe (42) is located above the glass plate (8), and one end of the connecting pipe (42) is fixedly connected to the water inlet pipe (17), a second electric control valve (43) is fixedly installed on the connecting pipe (42), and a plurality of inclined pipes (44) are fixedly connected to the bottom of the connecting pipe (42), the bottom ends of the inclined pipes (44) are all inclined toward the cabinet door (2) and are fixedly connected to a straight-line nozzle (45).

2. A three-phase smart meter with a smoke alarm device according to claim 1, characterized in that: The circulating air intake mechanism comprises an air intake groove (23) and an air exhaust groove (24), the air intake groove (23) and the air exhaust groove (24) being respectively arranged on two sides of the installation cabinet (1), a first exhaust fan (25) being fixedly mounted on the side of the installation cabinet (1), and the air exhaust groove (24) being located between the first exhaust fan (25) and the smoke sensor body (6).

3. A three-phase smart meter with a smoke alarm device according to claim 2, characterized in that: The sealing protection mechanism comprises a first sliding frame (26) and a second sliding frame (27), the first sliding frame (26) and the second sliding frame (27) are respectively fixedly connected to two sides of the interior of the installation cabinet (1), a first sealing plate (28) and a second sealing plate (29) are respectively slidably connected inside the first sliding frame (26) and the second sliding frame (27), the first sealing plate (28) and the second sealing plate (29) are respectively located at the top of one side of the air intake groove (23) and the air exhaust groove (24), a U-shaped bracket (30) is slidably connected inside the installation cabinet (1), two ends of the U-shaped bracket (30) are respectively fixedly connected to the first sealing plate (28) and the second sealing plate (29), and a hydraulic cylinder (31) is fixedly installed inside the installation cabinet (1), and a piston shaft of the hydraulic cylinder (31) is fixedly connected to the U-shaped bracket (30).

4. A three-phase smart meter with a smoke alarm device according to claim 1, characterized in that: An annular rubber strip (32) is provided on one side of the two glass plates (8) that is away from each other, and the annular rubber strip (32) is fixedly bonded to the intersection between the rectangular groove (7) and the corresponding side of the glass plate (8).

5. A three-phase smart meter with a smoke alarm device according to claim 3, characterized in that: A dustproof filter (33) is fixedly connected to the interior of the air inlet groove (23).

6. A three-phase smart meter with a smoke alarm device according to claim 3, characterized in that: The bottom of the water inlet pipe (17) is fixedly connected to an L-shaped pipe (34); one end of the L-shaped pipe (34) passes through the installation cabinet (1) and extends to the inside of the installation cabinet (1) and is fixedly connected to a cooling pipe (35); the cooling pipe (35) is fixedly inserted on the conduction block (3) in a reciprocating bending shape; one end of the cooling pipe (35) passes through the installation cabinet (1) and extends to the outside of the installation cabinet (1); and a matching connection mechanism is connected to the L-shaped pipe (34).

7. A three-phase smart meter with a smoke alarm device according to claim 6, characterized in that: The matching connecting mechanism comprises a circular rod (36), the circular rod (36) being fixedly connected to the U-shaped bracket (30) and being slidably inserted on one end of the L-shaped tube (34) located inside the installation cabinet (1), the circular rod (36) being provided with a circular through hole (37), the L-shaped tube (34) being fixedly connected with a sealing retaining ring (38), the sealing retaining ring (38) being slidably sleeved on the circular rod (36) and being located at the top of the sliding insertion point between the L-shaped tube (34) and the circular rod (36).

8. A three-phase smart electric meter with a smoke alarm device according to claim 7, characterized in that: A through slot (39) is provided inside the conduction block (3); a fixed connection point between the cooling pipe (35) and the conduction block (3) is connected to the through slot (39); a second exhaust fan (40) is fixedly mounted at the bottom of the conduction block (3); the second exhaust fan (40) is located at the bottom of the through slot (39).

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