A multifunctional electric power measuring instrument

Abstract

The present invention belongs to the technical field of measuring instruments, and in particular to a multifunctional electric power measuring instrument. The following scheme is proposed, including a panel, an electronic module and an instrument box, wherein the electronic module extends into the instrument box, the panel is fixed to the end of the instrument box, a through slot is provided at the top of the instrument box, a shaft is rotatably connected to the through slot through a torsion spring, and blades distributed in a circular array are fixed to the outer wall of the shaft, and blades on both sides of the shaft are arranged flush with the outer wall of the top of the instrument box in a normal state, and a toggle mechanism is connected to the end of the shaft, and a plurality of heat dissipation holes are provided on the back of the instrument box. The present invention enables the blades to move in the vertical direction of the through slot to guide the airflow, and enables the gap at the through slot position to open an air gap to disperse and guide the exhaust airflow, thereby improving the heat exhaust and cooling efficiency, and on the other hand, enables the blades at both sides of the through slot to move in opposite directions to improve the fluidity and heat of the gas at the through slot position.

Description

Technical Field

[0001] The invention relates to the technical field of measuring instruments, and in particular to a multifunctional electric power measuring instrument. Background Art

[0002] The multifunctional electric power meter is a self-developed multifunctional intelligent meter with programmable measurement, display, digital communication and electric energy pulse transmission output. It can complete multiple functions such as power measurement, electric energy metering, data display, collection and transmission.

[0003] With reference to a Chinese patent with patent announcement number CN220933091U, an electric power measuring instrument is disclosed, comprising a first box body and a second box body, wherein an instrument body is arranged inside the first box body, and a winding wheel is arranged inside the second box body, one end of the winding wheel is rotatably connected to the first box body through a rotating shaft, and the other end of the winding wheel passes through the second box body through the rotating shaft and is connected to a gear, a coil spring is arranged on the outer side of the rotating shaft, and a data line passing through the first box body is arranged on the instrument body; a fixed plate is arranged below the gear, a telescopic rod is arranged on the fixed plate, a connecting plate is arranged at the end of the telescopic rod, and a spring is arranged on the outer side of the telescopic rod, and a tooth block adapted to the gear is arranged on the connecting plate; the gear is limited by the tooth block so that the winding wheel cannot be pulled under normal conditions, and the data line can be directly pulled by detaching the tooth block from the gear, thereby lengthening the data line, and performing an electric power test through the measuring head.

[0004] However, the above-mentioned power measuring instruments are the same as the commonly used instruments in the prior art, and they only rely on shell heat exchange or set fans at the exhaust port for heat dissipation. However, during the long-term load operation of the power meter, its poor heat dissipation effect will affect the service life of the power meter and the measurement accuracy. Summary of the invention

[0005] Based on the technical problems of the background technology, the present invention proposes a multifunctional electric power measuring instrument.

[0006] A multifunctional electric power measuring meter proposed in the present invention comprises a panel, an electronic module and an instrument box, wherein the electronic module extends into the instrument box, the panel is fixed to the end of the instrument box, a through slot is provided on the top of the instrument box, a shaft is rotatably connected in the through slot through a torsion spring, blades distributed in a circular array are fixed to the outer wall of the shaft, and blades on both sides of the shaft are flush with the outer wall of the top of the instrument box in a normal state, a toggle mechanism is connected to the end of the shaft, and a plurality of heat dissipation holes are provided on the back of the instrument box.

[0007] Preferably, gears are fixed at both ends of the outer wall of the shaft rod, and the toggle mechanism is provided with two extension plates, which are meshed with gears at corresponding positions. A slider is fixed at one end of the extension plate facing the panel, and a magnetic block is embedded in the slider. An electromagnetic block is installed at a position on the outer wall of the instrument box corresponding to the magnetic block. A temperature detector is provided in the instrument box. When the temperature detector detects that the temperature reaches a set value, it sends a signal to the processor, and the processor starts the electromagnetic block to turn on and off the power of the electromagnetic block at reciprocating periodic intervals. The extension plate is connected to a reset mechanism.

[0008] Preferably, the inner walls on both sides of the instrument box are provided with a plurality of protrusions, the outer wall of the instrument box is provided with grooves at positions corresponding to the protrusions, an empty space is left between two adjacent protrusions, and gaps are left between the protrusions and the top and bottom inner walls of the instrument box.

[0009] Preferably, the inner wall of the groove located at the uppermost position is slidably connected to the outer wall of the slider, and openings are provided at the top of the instrument box and the top of the groove corresponding to the gear, and the openings pass through the top of the instrument box, the top of the groove and the gap between the protrusion and the instrument box.

[0010] Preferably, a tooth groove meshing with the gear is formed in the middle portion of the top of the extension plate, a movable groove 1 is formed at the end of the top of the extension plate close to the panel, and a movable groove 2 is formed at the end of the top of the extension plate away from the panel.

[0011] Preferably, the reset mechanism is provided with a movable frame, which is arranged at an outer side of the instrument box away from the panel. The movable frame is provided with a vertical flat plate 1, and flat plate 2 extending toward the panel is fixed on both sides of flat plate 1. The outer wall of flat plate 2 is in sliding contact with the outer wall of the instrument box, and the extension plate is fixedly connected to flat plate 2.

[0012] Preferably, a slider 2 is fixed to the bottom of the plate 2, the outer wall of the slider 2 is slidably connected to the inner wall of the groove, and a spring is connected between the end of the slider 2 and the groove.

[0013] Preferably, limit frames are fixed on both sides of the top and bottom of the instrument box, the limit frames are arranged near the movable frame, and the outer wall of the limit frames is flush with the edge of the panel.

[0014] Preferably, the outer wall of the flat plate 1 is provided with a plurality of mounting grooves distributed in the vertical direction, the mounting grooves are penetratingly arranged, a movable sheet made of spring material is fixed on one side of the mounting groove, and the fixing positions of two adjacent movable sheets and the mounting groove are distributed on both sides of the mounting groove.

[0015] The beneficial effects of the present invention are:

[0016] 1. In the present invention, the annularly distributed blades rotate around the horizontal axis at the slot position, so that the blades move in the vertical direction of the slot to guide the airflow. On the one hand, the gap at the slot position opens an air gap to disperse and guide the exhaust airflow, thereby improving the heat exhaust and cooling efficiency. On the other hand, the blades at both sides of the slot move in opposite directions to improve the fluidity of the gas at the slot position and avoid air blowing in a fixed direction all the time, which causes airflow aggregation and local overheating.

[0017] 2. In the present invention, the blade is reciprocated by a torsion spring, and the rotation speed of the blade is gradually changed rather than uniform in a single direction, thereby further improving the concentration of hot air and thus improving the dispersion, discharge and cooling effect of the airflow.

[0018] 3. In the present invention, during the shifting process and during the recovery process through the torsion spring, the gear is rotated at the top of the instrument box, the top of the groove, and the gap between the protrusion and the instrument box, thereby dispersing the airflow at the top edge positions on both sides of the instrument box and avoiding the hot airflow from gathering at the top edge positions on both sides.

[0019] 4. In the present invention, the movable frame is connected to the electromagnetic block through a spring to achieve horizontal reciprocating motion of the movable frame, and the extension plates are connected to the movable frame on both sides to enable the extension plates to move back and forth horizontally and stably, and move the movable frame on the back of the instrument box. During the movement of the flat plate of the movable frame, the air flow on the back of the instrument box is guided to disperse and cooperate with the heat dissipation holes to further improve the heat dissipation and cooling efficiency.

[0020] 5. In the present invention, the airflow around the heat dissipation hole is guided during the horizontal reciprocating movement of the movable frame, so that the movable sheet swings at the installation slot position, and two adjacent movable sheets swing from different directions on both sides, thereby further improving the airflow dispersion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a multifunctional power measuring instrument proposed by the present invention;

[0022] Figure 2 A schematic diagram of the structure of an instrument box and a movable frame of a multifunctional electric power measuring instrument proposed by the present invention;

[0023] Figure 3 This is a schematic diagram of the back structure of a meter box of a multifunctional electric power measuring meter proposed by the present invention;

[0024] Figure 4 A schematic diagram of a movable frame structure of a multifunctional electric power measuring instrument proposed by the present invention;

[0025] Figure 5 This is a schematic cross-sectional structure diagram of the gear connection position of a multifunctional electric power measuring instrument proposed by the present invention;

[0026] Figure 6 A schematic diagram of the shaft and blade structure of a multifunctional electric power measuring instrument proposed by the present invention;

[0027] Figure 7 This is a schematic diagram of the extension plate structure of a multifunctional electric power measuring instrument proposed by the present invention.

[0028] In the figure: 1 panel, 2 instrument box, 201 heat dissipation hole, 3 shaft rod, 4 blade, 5 protrusion, 501 groove, 6 extension plate, 7 slider 1, 8 magnetic block, 9 electromagnetic block, 10 tooth groove, 11 movable groove 1, 12 movable groove 2, 13 gear, 14 movable frame, 141 flat plate 1, 142 flat plate 2, 15 slider 2, 16 spring, 17 limit frame, 18 installation groove, 19 movable sheet. DETAILED DESCRIPTION

[0029] Example 1: Reference Figure 1-Figure 7 A multifunctional electric power measuring instrument comprises a panel 1, an electronic module and an instrument box 2, wherein the electronic module is connected to one end of the panel 1 facing the instrument box 2, the instrument box 2 is open at one end facing the panel 1, the electronic module extends into the instrument box 2, the panel 1 is fixed to the end of the opening of the instrument box 2, a through slot is provided at the top of the instrument box 2, the through slot is extended in the horizontal direction, a shaft rod 3 is rotatably connected in the through slot through a torsion spring, a blade 4 distributed in a ring array is fixed to the outer wall of the shaft rod 3, the end of the blade 4 is in sliding contact with the inner wall of the through slot, in a normal state, blades 4 are provided on both sides of the shaft rod 3 flush with the outer wall of the top of the instrument box 2, a toggle mechanism is connected to the end of the shaft rod 3, a plurality of heat dissipation holes 201 are provided on the back of the instrument box 2 away from the panel 1, during use, in a normal state, through the heat dissipation holes 201 on the back of the instrument box 2, as well as the shell and blades of the instrument box 2 The blade 4 performs heat exchange to cool the inside of the instrument box 2. When overheating occurs, the toggle mechanism toggles the shaft 3 connected to the torsion spring, and then the shaft 3 drives the blade 4 to reciprocate at the slot position under the action of the torsion spring: the annular blade 4 rotates around the horizontal axis at the slot position, and the blade 4 moves in the vertical direction of the slot to guide the airflow. On the one hand, the gap at the slot position opens an air gap to disperse and guide the exhaust airflow, thereby improving the heat exhaust and cooling efficiency. On the other hand, the blades 4 at both sides of the slot move in opposite directions to improve the fluidity of the gas at the slot position and avoid air blowing in a fixed direction that causes airflow aggregation and local overheating. In addition, the torsion spring is used to reciprocate the blade 4, and the rotation speed of the blade 4 is gradually changed rather than uniform in a single direction, thereby further improving the heat accumulation, thereby improving the dispersed exhaust and cooling effect of the airflow.

[0030] In the present invention, reference is made to Figure 1-Figure 7Gears 13 are fixed at both ends of the outer wall of the shaft rod 3, and the toggle mechanism is provided with two extension plates 6, which are meshed with the gears 13 at corresponding positions. A slider 7 is fixed at one end of the extension plate 6 facing the panel 1, and a magnetic block 8 is embedded in the slider 7. An electromagnetic block 9 is installed at the position corresponding to the magnetic block 8 on the outer wall of the instrument box 2. A temperature detector is provided in the instrument box 2. When the temperature detector detects that the temperature reaches a fixed value, it sends a signal to the processor. The processor starts the electromagnetic block 9 to turn on and off the electromagnetic block 9 at intervals of a reciprocating period. The extension plate 6 is connected to a reset mechanism, so that in the case of overheating, the interval on and off of the electromagnetic block 9 causes the slider 7 and the extension plate 6 to reciprocate horizontally, so that the gear 13 and the shaft rod 3 are alternately toggled toward both sides, and when the extension plate 6 moves in a single direction until it is no longer meshed with the gear 13, the gear 13 and the shaft rod 3 rotate and recover under the action of the torsion spring.

[0031] In the present invention, reference is made to Figure 1-Figure 7 A plurality of protrusions 5 are provided on the inner walls on both sides of the instrument box 2, grooves 501 are provided on the outer wall of the instrument box 2 at positions corresponding to the protrusions 5, an empty space is left between two adjacent protrusions 5, and gaps are left between the protrusions 5 and the top and bottom inner walls of the instrument box 2 to increase the heat exchange area on both sides to improve the heat exchange and cooling effect under normal conditions.

[0032] In the present invention, reference is made to Figure 1-Figure 7 The inner wall of the groove 501 located at the top is slidably connected with the outer wall of the slider 7, and the electromagnetic block 9 is fixed in the corresponding groove 501. A through hole is opened at the top of the instrument box 2 and the position corresponding to the gear 13 at the top of the groove 501. The through hole passes through the top of the instrument box 2, the top of the groove 501, and the gap between the protrusion 5 and the instrument box 2, so that the horizontal reciprocating movement of the extension plate 6 can reciprocate and reverse the gear 13 through the through-setting of the through hole, and during the tossing process and during the recovery process through the torsion spring, the gear 13 rotates at the top of the instrument box 2, the top of the groove 501, and the gap between the protrusion 5 and the instrument box 2, thereby dispersing the airflow at the top edge positions of both sides of the instrument box 2 and avoiding the hot airflow from gathering at the top edge positions of both sides. The vertical movement of the blade 4 in the middle position is coordinated to improve the dispersion and heat dissipation effect of the airflow, so as to further improve the cooling efficiency.

[0033] In the present invention, reference is made to Figure 1-Figure 7A tooth groove 10 meshing with the gear 13 is provided in the middle part of the top of the extension plate 6, a movable groove 11 is provided at the end of the top of the extension plate 6 close to the panel 1, and the movable groove 11 is opened toward the end of the panel 1, and a movable groove 2 12 is provided at the end of the top of the extension plate 6 away from the panel 1, and the movable groove 2 12 is opened away from the end of the panel 1. In a normal state, the position of the gear 13 corresponds to the position of the movable groove 11, and the gear 13 can move normally in the movable groove 11. When the electromagnetic block 9 is energized in the overheating state, the extension plate 6 moves toward the panel 1, that is, the tooth groove 10 on the extension plate 6 moves to the bottom of the gear 13 to mesh, and during the continuous movement of the extension plate 6, the shaft rod 3 is moved through the meshing between the tooth groove 10 and the gear 13 until the movable groove 2 12 corresponds to the position of the gear 13, so that the shaft rod 3, the gear 13 and the blade 4 resume rotation under the action of the torsion spring, thereby realizing the shifting of the shaft rod 3 and the natural return rotation of the shaft rod 3 after the shifting.

[0034] In the present invention, reference is made to Figure 1-Figure 7 The reset mechanism is provided with a movable frame 14, which is arranged at the outer side of the instrument box 2 away from the panel 1. The movable frame 14 is provided with a vertical flat plate 141. Flat plates 142 extending toward the panel 1 are fixed on both sides of the flat plate 141. The outer wall of the flat plate 142 is in sliding contact with the outer wall of the instrument box 2. The end of the extension plate 6 away from the slider 17 is fixedly connected with the flat plate 142. The bottom of the flat plate 142 is fixed with a slider 15. The outer wall of the slider 15 is slidably connected with the inner wall of the groove 501. A spring 16 is connected between the end of the slider 15 and the groove 501. The movable frame 14 is connected by the spring 16 to cooperate with the electromagnetic block 9 to realize the horizontal reciprocating motion of the movable frame 14, and the extension plate 6 is connected to the movable frame 14 and the extension plates 6 on both sides to make the extension plates 6 reciprocate horizontally and stably, and move on the back of the instrument box 2 with the movable frame 14. During the movement of the flat plate 141 of the movable frame 14, the air flow on the back of the instrument box 2 is guided to disperse and cooperate with the heat dissipation holes 201 to further improve the heat dissipation and cooling efficiency.

[0035] Embodiment 2: Embodiment 2 includes all structures and methods of Embodiment 1, with reference to Figure 1-Figure 7 A multifunctional electric power measuring instrument also includes: limit frames 17 are fixed on both sides of the top and bottom of the meter box 2, the limit frames 17 are arranged near the movable frame 14, and the outer wall of the limit frame 17 is flush with the edge of the panel 1, so that it is convenient to install the whole through the limit frame 17 or to place it horizontally.

[0036] In the present invention, reference is made to Figure 1-Figure 7The outer wall of the flat plate 141 is provided with a plurality of mounting grooves 18 distributed in the vertical direction. The mounting grooves 18 are penetrated and a movable piece 19 made of a spring material is fixed on one side of the mounting groove 18. The fixing positions of two adjacent movable pieces 19 and the mounting groove 18 are distributed on both sides of the mounting groove 18, so as to guide the air flow around the heat dissipation hole 201 to swing at the position of the mounting groove 18 during the horizontal reciprocating movement of the movable frame 14. Figure 4 As shown, the fixed positions of two adjacent movable sheets 19 are reversed, and the two adjacent movable sheets 19 are swung from different directions on both sides, thereby further improving the air flow dispersion effect and enhancing the heat dissipation and cooling efficiency.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multifunctional electric power measuring instrument, comprising a panel (1), an electronic module and a meter box (2), wherein the electronic module extends into the meter box (2), and the panel (1) and the meter box (2) are fixed at their ends, characterized in that: The top of the instrument box (2) is provided with a through slot, in which a shaft (3) is rotatably connected via a torsion spring, and the outer wall of the shaft (3) is fixed with blades (4) distributed in a ring array, and in a normal state, blades (4) are provided on both sides of the shaft (3) and are arranged flush with the outer wall of the top of the instrument box (2), and the end of the shaft (3) is connected to a toggle mechanism, and the back of the instrument box (2) is provided with a plurality of heat dissipation holes (201), and gears (13) are fixed at both ends of the outer wall of the shaft (3), and the toggle mechanism is provided with two extension plates (6), which are arranged to mesh with the gears (13) at corresponding positions, and a slider (7) is fixed at one end of the extension plate (6) facing the panel (1). ), a magnetic block (8) is embedded in the slider (7), an electromagnetic block (9) is installed at a position on the outer wall of the instrument box (2) corresponding to the magnetic block (8), a temperature detector is arranged in the instrument box (2), and when the temperature detector detects that the temperature reaches a fixed value, it sends a signal to the processor, and the processor starts the electromagnetic block (9) so that the electromagnetic block (9) is turned on and off at intervals of a reciprocating cycle, the extension plate (6) is connected to a reset mechanism, a tooth groove (10) meshing with the gear (13) is provided in the middle part of the top of the extension plate (6), a movable groove (11) is provided at the end of the top of the extension plate (6) close to the panel (1), and a movable groove (2) (12) is provided at the end of the top of the extension plate (6) away from the panel (1).

2. A multifunctional electric power measuring instrument according to claim 1, characterized in that: The inner walls on both sides of the instrument box (2) are provided with a plurality of protrusions (5), the outer wall of the instrument box (2) is provided with grooves (501) at positions corresponding to the protrusions (5), an empty space is left between two adjacent protrusions (5), and gaps are left between the protrusions (5) and the top and bottom inner walls of the instrument box (2).

3. A multifunctional electric power measuring instrument according to claim 2, characterized in that: The inner wall of the groove (501) at the uppermost position is slidably connected to the outer wall of the slider (7), and a through hole is provided at a position corresponding to the top of the instrument box (2) and the top of the groove (501) and the gear (13), and the through hole passes through the top of the instrument box (2), the top of the groove (501), and the gap between the protrusion (5) and the instrument box (2).

4. A multifunctional electric power measuring instrument according to any one of claims 2 to 3, characterized in that: The reset mechanism is provided with a movable frame (14), the movable frame (14) being arranged at an outer position of the instrument box (2) away from the panel (1), the movable frame (14) being provided with a vertically extending flat plate 1 (141), flat plate 2 (142) extending toward the panel (1) being fixed on both sides of the flat plate 1 (141), the outer wall of the flat plate 2 (142) being in sliding contact with the outer wall of the instrument box (2), and the extension plate (6) being fixedly connected to the flat plate 2 (142).

5. A multifunctional electric power measuring instrument according to claim 4, characterized in that: A second slider (15) is fixed to the bottom of the second flat plate (142), the outer wall of the second slider (15) is slidably connected to the inner wall of the groove (501), and a spring (16) is connected between the end of the second slider (15) and the groove (501).

6. A multifunctional electric power measuring instrument according to claim 5, characterized in that: Limiting frames (17) are fixed on both sides of the top and bottom of the instrument box (2); the limiting frames (17) are arranged at positions close to the movable frame (14); and the outer wall of the limiting frames (17) is flush with the edge of the panel (1).

7. A multifunctional electric power measuring instrument according to claim 5, characterized in that: The outer wall of the plate 1 (141) is provided with a plurality of mounting grooves (18) distributed in the vertical direction. The mounting grooves (18) are penetratingly arranged. A movable sheet (19) made of a spring sheet material is fixed on one side of the mounting groove (18). The fixing positions of two adjacent movable sheets (19) and the mounting groove (18) are distributed on both sides of the mounting groove (18).

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