Novel three-phase guide rail meter

Abstract

The utility model belongs to the technical field of electric energy meters, and discloses a novel three-phase guide rail meter which comprises an installation rear cover, a front cover connected with the installation rear cover, a meter head arranged on the front cover and a control panel arranged on the front cover. A fixing assembly used for fixing the transparent sealing rubber plate is arranged on the edge of the front cover, a communication interface is formed in the bottom of the installation rear cover, a lower annular groove is formed in the position, close to the edge of the installation rear cover, of the installation rear cover and located on the outer side of the communication interface, and a bottom cover matched with the lower annular groove in an inserted mode is arranged in the lower annular groove. The bottom cover is provided with a through hole for a communication cable to pass through, and a sealing ring is arranged in the through hole. According to the three-phase guide rail meter, the protection effect on the control panel and the meter head is enhanced, and the bottom cover has a good protection effect on the communication interface, so that the probability that the three-phase guide rail meter is affected with damp and damaged is reduced, and the service life of the three-phase guide rail meter is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy meters, in particular to a novel three-phase guide rail meter. Background Art

[0002] The three-phase rail meter is an electric energy meter used to measure three-phase alternating current. It has the advantages of high accuracy, low power consumption, and anti-theft of electricity. It is one of the most widely used electric energy meters. The three-phase rail meter is mainly composed of a meter head, a meter body, a motor, and an attached circuit. Among them, the meter head refers to an energy converter, which is used to convert electrical quantity into mechanical quantity; the meter body refers to the energy metering part, which is used to measure electrical quantity; the motor refers to the power source for driving the dial to rotate, generally using constant power feeding, stepper motor or tape drive; the attached circuit refers to the circuit that connects the three-phase electricity to the three-phase rail meter. The working principle of the three-phase rail meter is to use the current to pass through the four elements of the bridge circuit and then act on the magnetic field of the iron core through the spring on the screw. The magnetic force generated rotates the aluminum disk of the electric meter, converting the magnitude of the current into the angle of mechanical rotation. By calculating the rotation angle at each moment, the power consumption at each moment can be obtained.

[0003] The maintenance of three-phase rail meters includes regular calibration, cleaning, moisture and dust prevention. Among them, regular calibration is an important measure to ensure the accuracy of three-phase rail meters. Cleaning can prevent dust and impurities from affecting the meter head and dial. Moisture and dust prevention can help extend the service life of three-phase rail meters. At the same time, attention should be paid to the protection of the meter head to prevent external impact or water ingress from causing damage to the three-phase rail meter.

[0004] A three-phase rail meter for integrated energy services is disclosed in a Chinese utility model patent with publication number CN212905077U, comprising an installation back cover, a plurality of through holes are provided on the top of the installation back cover, a rail slot is provided in the middle of the back of the installation back cover, a locking slide groove communicating with the rail slot is provided at the center of the bottom of the back of the installation back cover, both ends of one side of the locking slide groove are fixedly provided with limit stops, the tops of the two limit stops are fixedly provided with clamping springs, the locking slide groove is slidably connected with a clamping lock block, both sides of the bottom of the inner wall of the installation back cover are fixedly provided with terminal seats, the center of the bottom of the inner wall of the installation back cover is fixedly provided with an integrated mutual inductance assembly, the front of the installation back cover is fixedly provided with an insulating protective shell, both sides of the top of the insulating protective shell are provided with a plurality of wiring slots, the interiors of the plurality of wiring slots are threadedly connected with wiring screws, a display control panel is fixedly provided at the center of the top of the insulating protective shell, and a communication interface is provided at one end of the insulating protective shell.

[0005] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: the display control panel is directly connected to the protective cover plate, the sealing is poor, and the communication interface is exposed, which can easily cause the three-phase rail meter to be damaged by moisture. Therefore, the related technologies need to be improved. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a novel three-phase guide rail meter.

[0007] The above technical purpose of the utility model is achieved through the following technical solutions: a new type of three-phase rail meter, including an installed rear cover, a front cover connected to the installed rear cover, a meter head arranged on the front cover and a control panel arranged on the front cover, a transparent sealing rubber plate is arranged on the side of the front cover away from the installed rear cover, a fixing component for fixing the transparent sealing rubber plate is arranged on the edge of the front cover, a communication interface is arranged at the bottom of the installed rear cover, a lower annular groove is arranged at a position of the installed rear cover near its edge, the lower annular groove is located on the outside of the communication interface, a bottom cover is arranged in the lower annular groove and is plugged into the lower annular groove, a through hole is arranged on the bottom cover for the communication cable to pass through, and a sealing ring is arranged in the through hole.

[0008] By adopting the above technical scheme, the fixing component plays a good fixing role on the transparent sealing rubber plate, enhances the protection of the control panel and the meter head, and the bottom cover plays a good protective role on the communication interface, thereby reducing the probability of the three-phase guide rail meter being damaged by moisture, which is beneficial to extending the service life of the three-phase guide rail meter.

[0009] Furthermore, the fixing assembly includes an annular frame and a first screw that is arranged through the annular frame and cooperates with the gap of the annular frame. The first screw passes through the transparent sealing plate and is threadedly connected to the front cover.

[0010] Furthermore, the fixing assembly also includes an annular pressing frame fixed to the side wall of the annular frame close to the side where the rear cover is installed, and an upper annular groove is provided at the position corresponding to the front cover and the annular pressing frame, and the annular pressing frame cooperates with the upper annular groove and presses the transparent sealing rubber plate.

[0011] By adopting the above technical solution, after tightening the first screw, the annular pressure frame cooperates with the upper annular groove and presses the transparent sealing rubber plate. At the same time, the side of the annular frame close to the installation rear cover is pressed against the side of the transparent sealing rubber plate away from the installation rear cover, so that the transparent sealing rubber plate has a good moisture-proof effect on the meter head and the control panel on the front cover.

[0012] Furthermore, a protrusion is provided on the transparent sealing rubber plate at a position corresponding to the case on the control panel.

[0013] By adopting the above technical solution and the provision of the raised portion, it is convenient for the user to press the corresponding case on the control panel.

[0014] Furthermore, chamfers are provided at the intersections between the side walls of the annular pressing frame and the side walls of the annular pressing frame on the side close to the mounting rear cover.

[0015] By adopting the above technical solution and the chamfered corners, it is easier for the staff to connect the annular pressing frame with the upper annular groove and press the transparent sealing rubber sheet.

[0016] Furthermore, a rubber sheet is adhered to and fixed to the inner wall of the lower annular groove, and a second screw is provided on the front cover, which passes through the side wall of the bottom cover and cooperates with the gap of the bottom cover. The end of the second screw is threadedly connected to the installation rear cover, and a third screw is provided on the installation rear cover, which passes through the side wall of the bottom cover and cooperates with the gap of the bottom cover, and the third screw is also threadedly connected to the installation rear cover.

[0017] By adopting the above technical solution, the second screw cooperates with the third screw to fix the bottom cover and the three-phase guide rail meter. The provision of the rubber sheet enhances the sealing between the top of the bottom cover and the bottom of the installed rear cover, thereby enhancing the protection of the communication interface.

[0018] Furthermore, an upper flange is integrally formed on the outer wall of the sealing ring near the upper end of the sealing ring, a lower flange is integrally formed on the outer wall of the sealing ring near the lower end of the sealing ring, and a S-shaped groove is provided on the side wall of the sealing ring.

[0019] By adopting the above technical solution, the setting of the upper flange and the lower flange allows the sealing ring to be stably installed on the bottom cover, and the setting of the slot notch makes it easy for the staff to install the sealing ring on the communication cable.

[0020] Furthermore, the sealing ring is sleeved with an arc-shaped gasket located between the top of the lower flange and the bottom surface of the bottom cover.

[0021] By adopting the above technical solution and setting the arc-shaped gasket, the sealing performance of the sealing ring on the connection between the communication cable and the bottom cover is further enhanced.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. In this application, the fixing assembly plays a good role in fixing the transparent sealing rubber plate, enhancing the protection of the control panel and the meter head, and the bottom cover plays a good role in protecting the communication interface, thereby reducing the probability of the three-phase rail meter being damaged by moisture, which is conducive to extending the service life of the three-phase rail meter;

[0024] 2. In the present application, after tightening the first screw, the annular pressure frame cooperates with the upper annular groove and presses the transparent sealing rubber sheet. At the same time, the side of the annular frame close to the installation rear cover is pressed against the side of the transparent sealing rubber sheet away from the installation rear cover, so that the transparent sealing rubber sheet has a good moisture-proof effect on the meter head and the control panel on the front cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0026] Figure 2 yes Figure 1 A schematic diagram of the structure from another perspective;

[0027] Figure 3 It is a schematic diagram of an embodiment of the utility model for highlighting the connection structure between the bottom cover and the mounting rear cover and the connection structure between the transparent sealing rubber plate and the front cover;

[0028] Figure 4 yes Figure 3 The enlarged schematic diagram of point A in the middle;

[0029] Figure 5 yes Figure 3 The enlarged schematic diagram of point B in the middle;

[0030] Figure 6 It is a schematic diagram of the structure of an embodiment of the utility model for highlighting a rubber sheet.

[0031] In the figure: 1. Install the back cover; 11. Communication interface; 12. Lower annular groove; 121. Rubber sheet; 13. Third screw; 2. Front cover; 21. Table head; 22. Control panel; 23. Second screw; 24. Upper annular groove; 3. Transparent sealing rubber sheet; 31. Raised portion; 4. Fixing assembly; 41. Annular frame; 42. First screw; 43. Annular pressure frame; 431. Chamfer; 5. Bottom cover; 51. Perforation; 6. Sealing ring; 61. Upper flange; 62. Lower flange; 63. Slot notch; 64. Arc-shaped gasket. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0033] like Figure 1-6As shown, the embodiment of the present application discloses a novel three-phase rail meter, including a mounting rear cover 1, a front cover 2, a transparent sealing rubber plate 3, a fixing assembly 4 and a bottom cover 5. The front cover 2 is detachably connected to the mounting rear cover 1, and a meter head 21 and a control panel 22 are provided on the front cover 2.

[0034] The transparent sealing rubber sheet 3 is made of transparent material, and the transparent sealing rubber sheet 3 is fitted on the side of the front cover 2 away from the installation rear cover 1. The fixing component 4 is arranged at the edge of the front cover 2 and is used to fix the transparent sealing rubber sheet 3. The fixing component 4 includes an annular frame 41, a first screw 42 that is penetrated and arranged on the annular frame 41 and is gap-matched with the annular frame 41, and an annular pressing frame 43 fixed to the side wall of the annular frame 41 close to the installation rear cover 1. The first screw 42 penetrates the transparent sealing rubber sheet 3 and is threadedly connected to the front cover 2. An upper annular groove 24 is arranged at a position corresponding to the front cover 2 and the annular pressing frame 43. The annular pressing frame 43 cooperates with the upper annular groove 24 and presses the transparent sealing rubber sheet 3. After tightening the first screw 42, the annular pressing frame 43 cooperates with the upper annular groove 24 and presses the transparent sealing rubber plate 3. At the same time, the side of the annular frame 41 close to the installation rear cover 1 is pressed against the side of the transparent sealing rubber plate 3 away from the installation rear cover 1, so that the transparent sealing rubber plate 3 has a good moisture-proof effect on the meter head 21 and the control panel 22 on the front cover 2, thereby reducing the probability of the three-phase guide rail meter being damaged by moisture, which is beneficial to extending the service life of the three-phase guide rail meter.

[0035] In this embodiment, a protrusion 31 is provided at a position of the transparent sealing rubber plate 3 corresponding to the case on the control panel 22 . The provision of the protrusion 31 facilitates the user to press the corresponding case on the control panel 22 .

[0036] In order to reduce the difficulty for the staff to install the annular frame 41 in the upper annular groove 24, chamfers 431 are provided at the intersections between the side walls of the annular pressing frame 43 and the side walls of the annular pressing frame 43 close to the installation side of the rear cover 1.

[0037] The bottom of the rear cover 1 is provided with a communication interface 11, and a lower annular groove 12 is provided near the edge of the rear cover 1, and the lower annular groove 12 is located outside the communication interface 11. The top of the bottom cover 5 is plugged into the lower annular groove 12, and a rubber sheet 121 is attached to and fixed to the inner wall of the lower annular groove 12. The front cover 2 is provided with a second screw 23 that penetrates the side wall of the bottom cover 5 and is gap-matched with the bottom cover 5, and the end of the second screw 23 is threadedly connected with the rear cover 1. The rear cover 1 is provided with a third screw 13 that penetrates the side wall of the bottom cover 5 and is gap-matched with the bottom cover 5, and the third screw 13 is also threadedly connected with the rear cover 1.

[0038] The bottom cover 5 is provided with a through hole 51 for the communication cable to pass through, and a sealing ring 6 is provided in the through hole 51. An upper flange 61 is integrally formed on the outer wall of the sealing ring 6 near the upper end of the sealing ring 6, and a lower flange 62 is integrally formed on the outer wall of the sealing ring 6 near the lower end of the sealing ring 6. A slot notch 63 is provided on the side wall of the sealing ring 6, and an arc-shaped gasket 64 is sleeved on the sealing ring 6 and is located between the top of the lower flange 62 and the bottom surface of the bottom cover 5. The provision of the upper flange 61 and the lower flange 62 allows the sealing ring 6 to be stably installed on the bottom cover 5, the provision of the slot notch 63 makes it easier for the staff to install the sealing ring 6 on the communication cable, and the provision of the arc-shaped gasket 64 further enhances the sealing performance of the sealing ring 6 at the connection between the communication cable and the bottom cover 5, and reduces the probability of the communication interface 11 being damaged by moisture.

[0039] The use principle of a new type of three-phase guide rail meter in the present embodiment is: after tightening the first screw 42, the annular pressure frame 43 cooperates with the upper annular groove 24 and presses the transparent sealing rubber plate 3. At the same time, the side of the annular frame 41 close to the installation rear cover 1 is pressed against the side of the transparent sealing rubber plate 3 away from the installation rear cover 1, so that the transparent sealing rubber plate 3 has a good moisture-proof effect on the meter head 21 on the front cover 2 and the control panel 22, thereby reducing the probability of the three-phase guide rail meter being damaged by moisture, which is beneficial to extending the service life of the three-phase guide rail meter.

[0040] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A novel three-phase rail meter, comprising a mounting rear cover (1), a front cover (2) connected to the mounting rear cover (1), a meter head (21) disposed on the front cover (2), and a control panel (22) disposed on the front cover (2), wherein: A transparent sealing rubber plate (3) is arranged on the side of the front cover (2) away from the installation rear cover (1), and a fixing component (4) for fixing the transparent sealing rubber plate (3) is arranged on the edge of the front cover (2). A communication interface (11) is arranged at the bottom of the installation rear cover (1), and a lower annular groove (12) is arranged at a position close to the edge of the installation rear cover (1), and the lower annular groove (12) is located outside the communication interface (11). A bottom cover (5) pluggable with the lower annular groove (12) is arranged in the lower annular groove (12), and a through hole (51) for the communication cable to pass through is arranged on the bottom cover (5), and a sealing ring (6) is arranged in the through hole (51).

2. A novel three-phase rail meter according to claim 1, characterized in that: The fixing assembly (4) comprises an annular frame (41) and a first screw (42) which is arranged through the annular frame (41) and is loosely matched with the annular frame (41); the first screw (42) passes through the transparent sealing rubber plate (3) and is threadedly connected to the front cover (2).

3. A novel three-phase rail meter according to claim 2, characterized in that: The fixing assembly (4) further comprises an annular pressing frame (43) fixed to the side wall of the annular frame (41) close to the side where the rear cover (1) is installed, an upper annular groove (24) is provided at a position corresponding to the front cover (2) and the annular pressing frame (43), and the annular pressing frame (43) cooperates with the upper annular groove (24) and presses the transparent sealing rubber plate (3).

4. A novel three-phase rail meter according to claim 3, characterized in that: The transparent sealing rubber plate (3) is provided with a raised portion (31) at a position corresponding to the case on the control panel (22).

5. A novel three-phase rail meter according to claim 3, characterized in that: A chamfer (431) is provided at the intersection between the side wall of the annular pressing frame (43) and the side wall of the annular pressing frame (43) close to the side where the rear cover (1) is installed.

6. A novel three-phase rail meter according to claim 3, characterized in that: A rubber sheet (121) is attached to and fixed to the inner wall of the lower annular groove (12); a second screw (23) is provided on the front cover (2) and passes through the side wall of the bottom cover (5) and is loosely matched with the bottom cover (5); an end of the second screw (23) is threadedly connected to the mounting rear cover (1); a third screw (13) is provided on the mounting rear cover (1) and passes through the side wall of the bottom cover (5) and is loosely matched with the bottom cover (5); the third screw (13) is also threadedly connected to the mounting rear cover (1).

7. A novel three-phase rail meter according to claim 3, characterized in that: An upper flange (61) is integrally formed on the outer wall of the sealing ring (6) near the upper end of the sealing ring (6), a lower flange (62) is integrally formed on the outer wall of the sealing ring (6) near the lower end of the sealing ring (6), and a slotted notch (63) is provided on the side wall of the sealing ring (6).

8. A novel three-phase rail meter according to claim 7, characterized in that: The sealing ring (6) is sleeved with an arc-shaped gasket (64) located between the top of the lower flange (62) and the bottom surface of the bottom cover (5).

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