TWI739581B - Single-phase and two-wire smart meter - Google Patents

Abstract

The present invention relates to a single-phase and two-wire smart meter. A receiver is raised from a casing to receive a communication module therein. The receiver has a cover to cover an opening thereof. A waterproof tape is between the opening and the cover and a sealing assembly is used for a sealing task. The lead sealing assembly has a screw, a positioning element and a lead sealing element. The cover is screwed to the receiver by the screw. The positioning element is on a screwing path of the screw and a channel is formed through the screw. When a thickness of the waterproof tape achieves a sealing thickness, the channel aligns a positioning slot formed on the cover so the lead sealing element passes through the positioning slot and the channel and then securely locked. Therefore, the lead sealing assembly of the present invention has locking function, waterproof confirmation, and lead sealing function.

Description

Single-phase two-wire smart meter

The invention relates to a single-phase two-wire smart electric meter, in particular to a single-phase two-wire smart electric meter with a multifunctional lead sealing structure.

In order to achieve energy-saving purposes, advanced metering infrastructure (AMI) is an important task. Through smart meter settings, coupled with time and electricity prices and other measures, the demand side management can be strengthened to achieve the most appropriate efficiency of energy use. In order to achieve the goal of restraining peak electricity consumption and saving energy.

As shown in Figure 6, it is a mechanical single-phase two-wire electric meter 80 that is currently used to calculate public electricity consumption in China. It is commonly installed on the outdoor wall or pillar of a building for meter copyers to conveniently copy the public power of the building. energy used. Therefore, in order to replace the mechanical single-phase two-wire electric meter 80 with a single-phase two-wire smart electric meter to complete the infrastructure construction of the smart electric meter, the service life and lead sealing operation must first be considered.

There are many problems in the actual promotion of traditional smart meters. For example, according to my country's Law of Weights and Measures, the meter that calculates the cost must pass the weights and measures inspection and then be sealed to prevent it from being opened and modified at will. Based on safety considerations, smart meters on the market are also It is further designed so that it cannot be connected to any external terminals to avoid the risk of information being modified; however, as the communication function of the smart meter is limited, it cannot meet the management requirements of optimal power consumption in real time.

Therefore, to truly implement the infrastructure construction of smart meters, mechanical single-phase two-wire meters must be replaced with smart meters, but at the same time, they must be able to take into account the requirements of outdoor waterproofing, convenient lead sealing operations, and safe data communication.

In view of the requirements of the above-mentioned single-phase two-wire smart electric meter, the main purpose of the present invention is to provide a new single-phase two-wire smart electric meter.

The main technical means used to achieve the above purpose is to make the single-phase two-wire smart meter include: a casing, a front side plate of which protrudes forward and a box body, which is located on the periphery of the opening of the box body and is close to the box body. A first perforation is formed on one side; a communication module is arranged in the box; a cover plate, one side of which is pivotally connected to the second side of the box body to cover the opening of the box body, the cover plate Corresponding to the first perforation, a hollow cylinder extends forward, a second perforation aligned with the first perforation is formed on the bottom surface of the hollow cylinder, and two opposite positioning grooves are formed on the sidewall of the hollow cylinder; a waterproof rubber strip , Is sandwiched between the box body and the cover; and a lead seal assembly includes: a screw penetrated from the hollow cylinder of the cover, and passes through the first perforation and the second Perforated and screwed to the box body; a positioning member is arranged on the screw threading path and forms a limit channel. When the thickness of the waterproof rubber strip reaches a sealing thickness, the limit channel is aligned with the Positioning slot; and A first sealing element passes through the positioning groove of the hollow cylinder and the limiting passage of the positioning member for lead sealing; wherein the height of the positioning groove and the limiting passage is the same as the height of the first sealing element The thickness of the buckle is matched.

It can be seen from the above description that the single-phase two-wire smart meter of the present invention uses a communication module. It does not need to reserve signal ports for external terminals to smoothly transmit meter billing information, and consider the importance of waterproofing. The single-phase two-wire smart meter of the present invention Phase two-wire smart meters are conducting communication module inspection lead sealing operations. When the operator finally uses the lead sealing assembly, as long as the screw is tightened, the limit channel of the positioning member is aligned with the positioning groove of the hollow cylinder At this time, the waterproof tape has been pressed to the sealing thickness to achieve sufficient waterproof effect, and the mutually aligned limit channels and positioning grooves can be used for the lead sealing components to buckle; on the contrary, if the operator does not tighten the screw , It not only fails to buckle the lead sealing element, but also means that the waterproof rubber strip has not reached the sealing thickness; therefore, the lead sealing assembly of the present invention allows the operator to lock the cover plate to the box body at the same time to ensure the gap between the cover plate and the box body. The waterproof function of the room, and the final lead sealing operation.

1.1a: Smart meter

10: Shell

101: front side panel

11: Box body

110: opening

111: first side

112: The first perforation

113: second side

20: Power metering unit

30: Communication module

31: Shell

32: Protruding part

33: curved side

40: cover

41: Hollow cylinder

411: second piercing

412: Sidewall

413: positioning slot

42: convex rib

43: Magnetic chuck

50: Waterproof tape

60, 60a: Lead seal components

61: Screw

611: Nut

62: Positioning piece

621: limit channel

63: The first seal component

631: ring buckle

70: Power line connection terminal block

701: screw hole

71: The first trim

72: second trim

73: Lead Sealing Screw

731: perforation

80: electric meter

Fig. 1: A perspective view of the first embodiment of the single-phase two-wire smart electric meter of the present invention.

Figure 2: Part of the exploded perspective view of Figure 1.

Figure 3A: A partial cross-sectional view of the screw in Figure 1 when the screw is not tightened.

Figure 3B: A partial cross-sectional view of the screw in Figure 1 when it is tightened.

Fig. 4: A perspective view of the second embodiment of the single-phase two-wire smart electric meter of the present invention.

Fig. 5A: A partial cross-sectional view of the screw in Fig. 4 when the screw is not tightened.

Figure 5B: A partial cross-sectional view of the screw in Figure 4 when the screw is tightened.

Figure 6: The appearance of a traditional mechanical single-phase two-wire electric meter.

The present invention mainly proposes improvements for single-phase two-wire electric meters. The technical content of the present invention will be described in detail below with a number of embodiments and drawings.

First, please refer to FIG. 1, which is a three-dimensional appearance view of the first embodiment of the single-phase two-wire smart electric meter of the present invention. In conjunction with FIG. 2, the single-phase two-wire smart electric meter 1 includes a housing 10 , A power metering unit 20, a communication module 33, a cover plate 40, a waterproof rubber strip 50, a lead seal assembly 60, a power line connection terminal base 70, a first decorative plate cover 71 and a second decorative plate Cover 72.

A front side plate 101 of the housing 10 protrudes forward of a box body 11, and a first through hole 112 is formed on the periphery of the opening 110 of the box body 11 and close to the first side 111 of the box body 11; in this embodiment, the first hole 112 is formed. The through hole 112 is a screw hole.

The above-mentioned power metering unit 20 is installed in the housing 10.

The above-mentioned communication module 30 is arranged in the box body 11 of the housing 10 and is electrically connected to the power metering unit 20; in this embodiment, the communication module 30 is a pluggable wireless communication module, It is plugged into the power metering unit 20; and the housing 31 of the communication module 30 extends toward the surface of the cover plate 40 with a protruding portion 32 for the communication module 30 to be pulled out by hand for easy replacement of the communication module 30; Preferably, the housing 31 facing the first side 111 of the box body 11 has an arc-shaped side 33, with a single-phase three-wire smart meter, three-phase four-wire smart meter (round meter) The communication module is shared.

One side of the cover plate 40 is pivotally connected to the second side 113 of the box body 11 to cover the opening 110 of the box body 11, and the cover plate 40 corresponds to the first through hole 112 and extends forward with a hollow cylinder 41 , The bottom surface of the hollow cylinder 41 is formed with a second through hole 411 aligned with the first through hole 112, and the hollow cylinder 41 The side wall 412 is formed with two opposite positioning grooves 413; the cover plate 40 extends toward the periphery of the opening 110 of the box body 11 with a convex rib 42. In this embodiment, the cover 40 is a transparent cover.

The waterproof rubber strip 50 is sandwiched between the box body 11 and the cover 40; in this embodiment, the waterproof rubber strip 50 is embedded in the periphery of the opening 110 of the box body 11, and the first perforation 112 is Located on the outside of the waterproof rubber strip 50; preferably, the box body 11 is formed with two parallel convex rings 114 on the periphery of the opening 110 for the waterproof rubber strip 50 to be embedded therein, and the convex ribs 42 of the cover plate 40 are aligned Between the two parallel road convex rings 114, when the cover plate 40 covers the box body 11, the convex rib 42 presses the waterproof rubber strip 50 to a sealing thickness.

The above-mentioned seal assembly 60 includes a screw 61, a positioning member 62, and a first seal element 63; wherein the screw 61 penetrates through the hollow cylinder 41 of the cover plate 40 and passes through the second through hole 411 and The first hole 112 is finally screwed on the box body 11. The positioning member 62 is arranged on the screw path of the screw 61 and forms a limiting channel 621. When the thickness of the waterproof rubber strip 50 reaches a sealing thickness, the limiting channel 621 is aligned with the positioning grooves 413 to maintain The communicating space between the limiting channel 621 and the positioning grooves 413 is in a clear state; in this embodiment, the positioning member 62 is integrally formed with the screw 61, that is, the nut 611 of the screw 61 is formed with the positioning member 62 of the limit channel 621. The first sealing element 63 passes through the positioning slot 413 of the hollow cylinder 41 and the limiting channel 621 of the positioning member 62 for lead sealing; wherein the heights of the positioning slot 413 and the limiting channel 621 are the same as those of the limiting channel 621. The thickness of the ring 631 of the first sealing element 63 is matched.

Since the single-phase two-wire smart meter 1 may be installed outdoors or in the basement, the communication module 30 with better communication quality will be selected according to the geographical location. After the group 30 is inserted into the box body 11, the operator then performs the lead sealing operation; at this time, the cover plate 40 is closed to the opening 110 of the box body 11, and the screw 61 of the lead sealing assembly 60 is aligned with the hollow cylinder The second perforation 411 of 41 is screwed to the first perforation 112 of the box body 11 to lock the cover plate 40 on the box body 11; as shown in FIG. 3A, in order to ensure that the operator tightens the screw 61 , The operator can confirm whether the limiting channel 621 of the nut 611 of the screw 61 is aligned with the positioning groove 413 of the hollow cylinder 41, when the limiting channel 621 of the nut 611 is aligned with the positioning groove of the hollow cylinder 41 413, that is, as shown in FIG. 3B, since the height of the limiting channel 521 matches the thickness of the ring buckle 631 of the first seal element 63, the operator can smoothly penetrate the ring buckle 631 through the positioning groove 413. After the limit channel 621 is buckled, the lead sealing operation is completed; at this time, the rib 42 of the cover plate 40 will also tighten the waterproof rubber strip 50 to compress its thickness to the sealing thickness to ensure that the cover plate 40 is tightly attached The opening 110 of the box body 11; Moreover, because the first perforation 112 is located outside the waterproof rubber strip 50, there is no need to worry about the water droplets outside the box body 11 penetrating into the opening 110 of the box body 11 through the screw 61.

As shown in Figures 1 and 2, the above-mentioned power line connection terminal block 70 is arranged on the bottom surface of the housing 10 to connect the power line of the building (not shown in the figure) for electricity consumption measurement; and the power line connection terminal block 70 A screw hole 701 is formed on the front side; in order to ensure that the power line connection terminal block 70 and the power line connection are not exposed, the first decorative plate cover 71 or the second decorative plate 72 are then covered, and the lead sealing screw 73 is passed through the back Screwed on the screw hole 701 to lock the first or second plaque 71, 72 on the power line connection terminal base 70. Since the nut of the seal screw 73 is formed with a through hole 731 for a second The lead sealing element 74 is snapped onto it. The first plaque 71 is shorter than the second plaque 72, and is suitable for when the smart meter 1 is installed in a sheltered place. If the smart meter 1 is installed outdoors in an unshielded place, in order to prevent rainwater from flowing into the power line connection terminal block 70 along the power line. , A longer second trim 72 can be used.

Please refer to FIG. 2 again, the box body 11 is further provided with an optical communication port 12, and the cover plate 40 corresponds to the optical communication port 12 and a magnetic chuck 43 is embedded; because the magnetic chuck 43 is embedded in the cover plate 40 Inside, it is avoided that the magnetic chuck 43 is arranged outside the cover plate 40 and gets damp and rusts.

Please refer to FIG. 4, which is a three-dimensional exploded view of the second embodiment of the single-phase two-wire smart meter 1a of the present invention. The structure of the single-phase two-wire smart meter 1a is mostly the same as that of the first embodiment, but the The positioning member 62 of the lead seal assembly 60a is a sleeve, and the sleeve is formed with the limiting channel 621. As shown in FIG. To cover the screw 61 exposed to the nut 611 of the hollow cylinder; and as shown in FIG. 5B, when the screw 61 is firmly tightened, the nut 611 of the screw 61 will not interfere with the limiting channel 621 and the After the positioning grooves 413 are aligned with the connecting space, the clearance of the connecting space is maintained so that the operator can smoothly penetrate the loop buckle 631 through the positioning groove 413 into the limit channel 621 and then buckle to complete the lead sealing operation; The ribs 42 of the cover plate 40 will also tighten the waterproof rubber strip 50 and compress its thickness to a sealing thickness to ensure that the cover plate has an opening 110 that is tightly attached to the box body 11.

In summary, the single-phase two-wire smart meter of the present invention uses a communication module. It does not need to reserve signal ports for external terminals to smoothly transmit meter billing information, and consider the importance of waterproofing. The single-phase two-wire smart meter of the present invention Phase two-wire smart meters are conducting communication module inspection lead sealing operations. When the operator finally uses the lead sealing assembly, as long as the screw is tightened, the limit channel of the positioning member is aligned with the positioning groove of the hollow cylinder At this time, the waterproof tape has been pressed to the sealing thickness to achieve sufficient waterproof effect, and the mutually aligned limit channels and positioning grooves can be used for the lead sealing components to buckle; on the contrary, if the operator does not tighten the screw , It not only fails to buckle the lead sealing element, but also means that the waterproof rubber strip has not reached the sealing thickness; therefore, the lead sealing assembly of the present invention allows the operator to lock the cover plate to the box body at the same time to ensure the gap between the cover plate and the box body. The waterproof function of the room, and the final lead sealing operation.

The above are only the embodiments of the present invention and do not limit the present invention in any form. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field, Without departing from the scope of the technical solution of the present invention, when the technical content disclosed above can be used to make slight changes or modification into equivalent embodiments with equivalent changes, but generally Without departing from the content of the technical solution of the present invention, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

1: Smart meter

10: Shell

11: Box body

40: cover

41: Hollow cylinder

43: Magnetic chuck

60: Lead seal components

61: Screw

63: The first seal component

631: ring buckle

72: second trim

73: Lead Sealing Screw

Claims (10)

A single-phase two-wire smart electric meter, comprising: a housing, a front side plate of which protrudes forward, a box body, the box body has an opening away from the front side plate, at the periphery of the opening of the box body and close to the box body. A first perforation is formed on one side; a power metering unit is arranged in the housing; a communication module is arranged in the box body and electrically connected to the power metering unit; a cover plate whose one side pivots Connected to the second side of the box body to cover the opening of the box body, the cover plate corresponds to the first perforation and extends forward with a hollow cylinder, and the bottom of the hollow cylinder is formed with a first hole aligned with the first through Two perforations, and two opposite positioning grooves are formed on the side wall of the hollow cylinder; a waterproof rubber strip, which is sandwiched between the box body and the cover plate; and a lead seal assembly, which includes: a screw, It penetrates through the hollow cylinder of the cover plate, passes through the first through hole and the second through hole, and is screwed to the box body; a positioning member is arranged on the screw screw path and forms a limit position Channel, when the thickness of the waterproof rubber strip reaches a sealing thickness, the limiting channel is aligned with the positioning grooves; and a first sealing element passes through the positioning groove of the hollow cylinder and the limiting of the positioning member The channel is lead-sealed; wherein the heights of the positioning groove and the limiting channel match the thickness of the ring buckle of the first sealing element. The single-phase two-wire smart electric meter according to claim 1, wherein the positioning member is integrally formed with the screw, and the nut of the screw forms the limiting channel. The single-phase two-wire smart electric meter according to claim 1, wherein the positioning member is a sleeve formed with the limiting channel, and after being inserted into the hollow cylinder, the screw is exposed to the cover The nut of the hollow cylinder; wherein when the thickness of the waterproof rubber strip reaches the sealing thickness, the screw does not interfere with the communication space after the limit channel is aligned with the positioning grooves. The single-phase two-wire smart meter according to any one of claim 1 to 3, wherein the communication module is a pluggable wireless communication module that is inserted in the box, and the communication module The shell of the group extends toward the surface of the cover plate with a protruding part. The single-phase two-wire smart meter according to claim 4, wherein the housing of the communication module has an arc-shaped side facing the first side of the box body. The single-phase two-wire smart meter according to any one of claims 1 to 3, wherein the bottom surface of the housing is provided with a power line connection terminal block, the front side of the power line connection terminal block is formed with a screw hole, and the housing The system further includes: a first decorative plate cover to cover the power line connection terminal base; a lead sealing screw to screw the first decorative plate cover to the screw hole of the power line connection terminal base, the lead seal The screw is formed with a through hole; and a second seal element is fastened to the through hole of the seal screw. The single-phase two-wire smart electric meter according to claim 6, wherein the housing further includes a second decorative plate cover whose length is longer than the first decorative plate cover and can cover the first decorative plate cover. Lead sealing screws screw the first and second plaque covers to the screw holes of the power line connection terminal block. The single-phase two-wire smart electric meter according to any one of claims 1 to 3, wherein: the waterproof rubber strip is embedded in the periphery of the opening of the box body; and the cover plate is formed with a convex rib corresponding to the waterproof rubber strip , To press the waterproof tape. The single-phase two-wire smart electric meter according to claim 8, wherein the first perforation is located on the outer side of the waterproof rubber strip. The single-phase two-wire smart meter according to claim 8, wherein the first perforation is that the box body is further provided with an optical communication port; and the cover plate is embedded with a magnetic chuck corresponding to the optical communication port.

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